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openwrt-xburst/target/linux/orion/patches/060-mv643xx_git_backport.patch
kaloz 54d4291e15 backport mv643xx ethernet changes from the Marvell git repo 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@11504 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-06-16 13:20:10 +00:00

5346 lines
158 KiB
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--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -34,406 +34,145 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+
#include <linux/init.h>
#include <linux/dma-mapping.h>
#include <linux/in.h>
-#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/udp.h>
#include <linux/etherdevice.h>
-
-#include <linux/bitops.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/platform_device.h>
-
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
#include <linux/mii.h>
-
#include <linux/mv643xx_eth.h>
-
#include <asm/io.h>
#include <asm/types.h>
-#include <asm/pgtable.h>
#include <asm/system.h>
-#include <asm/delay.h>
-#include <asm/dma-mapping.h>
-#define MV643XX_CHECKSUM_OFFLOAD_TX
-#define MV643XX_NAPI
-#define MV643XX_TX_FAST_REFILL
-#undef MV643XX_COAL
-
-#define MV643XX_TX_COAL 100
-#ifdef MV643XX_COAL
-#define MV643XX_RX_COAL 100
-#endif
+static char mv643xx_eth_driver_name[] = "mv643xx_eth";
+static char mv643xx_eth_driver_version[] = "1.1";
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
+#define MV643XX_ETH_CHECKSUM_OFFLOAD_TX
+#define MV643XX_ETH_NAPI
+#define MV643XX_ETH_TX_FAST_REFILL
+
+#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
#define MAX_DESCS_PER_SKB (MAX_SKB_FRAGS + 1)
#else
#define MAX_DESCS_PER_SKB 1
#endif
-#define ETH_VLAN_HLEN 4
-#define ETH_FCS_LEN 4
-#define ETH_HW_IP_ALIGN 2 /* hw aligns IP header */
-#define ETH_WRAPPER_LEN (ETH_HW_IP_ALIGN + ETH_HLEN + \
- ETH_VLAN_HLEN + ETH_FCS_LEN)
-#define ETH_RX_SKB_SIZE (dev->mtu + ETH_WRAPPER_LEN + \
- dma_get_cache_alignment())
-
/*
* Registers shared between all ports.
*/
-#define PHY_ADDR_REG 0x0000
-#define SMI_REG 0x0004
-#define WINDOW_BASE(i) (0x0200 + ((i) << 3))
-#define WINDOW_SIZE(i) (0x0204 + ((i) << 3))
-#define WINDOW_REMAP_HIGH(i) (0x0280 + ((i) << 2))
-#define WINDOW_BAR_ENABLE 0x0290
-#define WINDOW_PROTECT(i) (0x0294 + ((i) << 4))
+#define PHY_ADDR 0x0000
+#define SMI_REG 0x0004
+#define WINDOW_BASE(w) (0x0200 + ((w) << 3))
+#define WINDOW_SIZE(w) (0x0204 + ((w) << 3))
+#define WINDOW_REMAP_HIGH(w) (0x0280 + ((w) << 2))
+#define WINDOW_BAR_ENABLE 0x0290
+#define WINDOW_PROTECT(w) (0x0294 + ((w) << 4))
/*
* Per-port registers.
*/
-#define PORT_CONFIG_REG(p) (0x0400 + ((p) << 10))
-#define PORT_CONFIG_EXTEND_REG(p) (0x0404 + ((p) << 10))
-#define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10))
-#define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10))
-#define SDMA_CONFIG_REG(p) (0x041c + ((p) << 10))
-#define PORT_SERIAL_CONTROL_REG(p) (0x043c + ((p) << 10))
-#define PORT_STATUS_REG(p) (0x0444 + ((p) << 10))
-#define TRANSMIT_QUEUE_COMMAND_REG(p) (0x0448 + ((p) << 10))
-#define MAXIMUM_TRANSMIT_UNIT(p) (0x0458 + ((p) << 10))
-#define INTERRUPT_CAUSE_REG(p) (0x0460 + ((p) << 10))
-#define INTERRUPT_CAUSE_EXTEND_REG(p) (0x0464 + ((p) << 10))
-#define INTERRUPT_MASK_REG(p) (0x0468 + ((p) << 10))
-#define INTERRUPT_EXTEND_MASK_REG(p) (0x046c + ((p) << 10))
-#define TX_FIFO_URGENT_THRESHOLD_REG(p) (0x0474 + ((p) << 10))
-#define RX_CURRENT_QUEUE_DESC_PTR_0(p) (0x060c + ((p) << 10))
-#define RECEIVE_QUEUE_COMMAND_REG(p) (0x0680 + ((p) << 10))
-#define TX_CURRENT_QUEUE_DESC_PTR_0(p) (0x06c0 + ((p) << 10))
-#define MIB_COUNTERS_BASE(p) (0x1000 + ((p) << 7))
-#define DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(p) (0x1400 + ((p) << 10))
-#define DA_FILTER_OTHER_MULTICAST_TABLE_BASE(p) (0x1500 + ((p) << 10))
-#define DA_FILTER_UNICAST_TABLE_BASE(p) (0x1600 + ((p) << 10))
-
-/* These macros describe Ethernet Port configuration reg (Px_cR) bits */
-#define UNICAST_NORMAL_MODE (0 << 0)
-#define UNICAST_PROMISCUOUS_MODE (1 << 0)
-#define DEFAULT_RX_QUEUE(queue) ((queue) << 1)
-#define DEFAULT_RX_ARP_QUEUE(queue) ((queue) << 4)
-#define RECEIVE_BC_IF_NOT_IP_OR_ARP (0 << 7)
-#define REJECT_BC_IF_NOT_IP_OR_ARP (1 << 7)
-#define RECEIVE_BC_IF_IP (0 << 8)
-#define REJECT_BC_IF_IP (1 << 8)
-#define RECEIVE_BC_IF_ARP (0 << 9)
-#define REJECT_BC_IF_ARP (1 << 9)
-#define TX_AM_NO_UPDATE_ERROR_SUMMARY (1 << 12)
-#define CAPTURE_TCP_FRAMES_DIS (0 << 14)
-#define CAPTURE_TCP_FRAMES_EN (1 << 14)
-#define CAPTURE_UDP_FRAMES_DIS (0 << 15)
-#define CAPTURE_UDP_FRAMES_EN (1 << 15)
-#define DEFAULT_RX_TCP_QUEUE(queue) ((queue) << 16)
-#define DEFAULT_RX_UDP_QUEUE(queue) ((queue) << 19)
-#define DEFAULT_RX_BPDU_QUEUE(queue) ((queue) << 22)
-
-#define PORT_CONFIG_DEFAULT_VALUE \
- UNICAST_NORMAL_MODE | \
- DEFAULT_RX_QUEUE(0) | \
- DEFAULT_RX_ARP_QUEUE(0) | \
- RECEIVE_BC_IF_NOT_IP_OR_ARP | \
- RECEIVE_BC_IF_IP | \
- RECEIVE_BC_IF_ARP | \
- CAPTURE_TCP_FRAMES_DIS | \
- CAPTURE_UDP_FRAMES_DIS | \
- DEFAULT_RX_TCP_QUEUE(0) | \
- DEFAULT_RX_UDP_QUEUE(0) | \
- DEFAULT_RX_BPDU_QUEUE(0)
-
-/* These macros describe Ethernet Port configuration extend reg (Px_cXR) bits*/
-#define CLASSIFY_EN (1 << 0)
-#define SPAN_BPDU_PACKETS_AS_NORMAL (0 << 1)
-#define SPAN_BPDU_PACKETS_TO_RX_QUEUE_7 (1 << 1)
-#define PARTITION_DISABLE (0 << 2)
-#define PARTITION_ENABLE (1 << 2)
-
-#define PORT_CONFIG_EXTEND_DEFAULT_VALUE \
- SPAN_BPDU_PACKETS_AS_NORMAL | \
- PARTITION_DISABLE
-
-/* These macros describe Ethernet Port Sdma configuration reg (SDCR) bits */
-#define RIFB (1 << 0)
-#define RX_BURST_SIZE_1_64BIT (0 << 1)
-#define RX_BURST_SIZE_2_64BIT (1 << 1)
+#define PORT_CONFIG(p) (0x0400 + ((p) << 10))
+#define UNICAST_PROMISCUOUS_MODE 0x00000001
+#define PORT_CONFIG_EXT(p) (0x0404 + ((p) << 10))
+#define MAC_ADDR_LOW(p) (0x0414 + ((p) << 10))
+#define MAC_ADDR_HIGH(p) (0x0418 + ((p) << 10))
+#define SDMA_CONFIG(p) (0x041c + ((p) << 10))
+#define PORT_SERIAL_CONTROL(p) (0x043c + ((p) << 10))
+#define PORT_STATUS(p) (0x0444 + ((p) << 10))
+#define TX_FIFO_EMPTY 0x00000400
+#define TXQ_COMMAND(p) (0x0448 + ((p) << 10))
+#define TXQ_FIX_PRIO_CONF(p) (0x044c + ((p) << 10))
+#define TX_BW_RATE(p) (0x0450 + ((p) << 10))
+#define TX_BW_MTU(p) (0x0458 + ((p) << 10))
+#define TX_BW_BURST(p) (0x045c + ((p) << 10))
+#define INT_CAUSE(p) (0x0460 + ((p) << 10))
+#define INT_TX_END 0x07f80000
+#define INT_RX 0x0007fbfc
+#define INT_EXT 0x00000002
+#define INT_CAUSE_EXT(p) (0x0464 + ((p) << 10))
+#define INT_EXT_LINK 0x00100000
+#define INT_EXT_PHY 0x00010000
+#define INT_EXT_TX_ERROR_0 0x00000100
+#define INT_EXT_TX_0 0x00000001
+#define INT_EXT_TX 0x0000ffff
+#define INT_MASK(p) (0x0468 + ((p) << 10))
+#define INT_MASK_EXT(p) (0x046c + ((p) << 10))
+#define TX_FIFO_URGENT_THRESHOLD(p) (0x0474 + ((p) << 10))
+#define TXQ_FIX_PRIO_CONF_MOVED(p) (0x04dc + ((p) << 10))
+#define TX_BW_RATE_MOVED(p) (0x04e0 + ((p) << 10))
+#define TX_BW_MTU_MOVED(p) (0x04e8 + ((p) << 10))
+#define TX_BW_BURST_MOVED(p) (0x04ec + ((p) << 10))
+#define RXQ_CURRENT_DESC_PTR(p, q) (0x060c + ((p) << 10) + ((q) << 4))
+#define RXQ_COMMAND(p) (0x0680 + ((p) << 10))
+#define TXQ_CURRENT_DESC_PTR(p, q) (0x06c0 + ((p) << 10) + ((q) << 2))
+#define TXQ_BW_TOKENS(p, q) (0x0700 + ((p) << 10) + ((q) << 4))
+#define TXQ_BW_CONF(p, q) (0x0704 + ((p) << 10) + ((q) << 4))
+#define TXQ_BW_WRR_CONF(p, q) (0x0708 + ((p) << 10) + ((q) << 4))
+#define MIB_COUNTERS(p) (0x1000 + ((p) << 7))
+#define SPECIAL_MCAST_TABLE(p) (0x1400 + ((p) << 10))
+#define OTHER_MCAST_TABLE(p) (0x1500 + ((p) << 10))
+#define UNICAST_TABLE(p) (0x1600 + ((p) << 10))
+
+
+/*
+ * SDMA configuration register.
+ */
#define RX_BURST_SIZE_4_64BIT (2 << 1)
-#define RX_BURST_SIZE_8_64BIT (3 << 1)
-#define RX_BURST_SIZE_16_64BIT (4 << 1)
#define BLM_RX_NO_SWAP (1 << 4)
-#define BLM_RX_BYTE_SWAP (0 << 4)
#define BLM_TX_NO_SWAP (1 << 5)
-#define BLM_TX_BYTE_SWAP (0 << 5)
-#define DESCRIPTORS_BYTE_SWAP (1 << 6)
-#define DESCRIPTORS_NO_SWAP (0 << 6)
-#define IPG_INT_RX(value) (((value) & 0x3fff) << 8)
-#define TX_BURST_SIZE_1_64BIT (0 << 22)
-#define TX_BURST_SIZE_2_64BIT (1 << 22)
#define TX_BURST_SIZE_4_64BIT (2 << 22)
-#define TX_BURST_SIZE_8_64BIT (3 << 22)
-#define TX_BURST_SIZE_16_64BIT (4 << 22)
#if defined(__BIG_ENDIAN)
#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
RX_BURST_SIZE_4_64BIT | \
- IPG_INT_RX(0) | \
TX_BURST_SIZE_4_64BIT
#elif defined(__LITTLE_ENDIAN)
#define PORT_SDMA_CONFIG_DEFAULT_VALUE \
RX_BURST_SIZE_4_64BIT | \
BLM_RX_NO_SWAP | \
BLM_TX_NO_SWAP | \
- IPG_INT_RX(0) | \
TX_BURST_SIZE_4_64BIT
#else
#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
#endif
-/* These macros describe Ethernet Port serial control reg (PSCR) bits */
-#define SERIAL_PORT_DISABLE (0 << 0)
-#define SERIAL_PORT_ENABLE (1 << 0)
-#define DO_NOT_FORCE_LINK_PASS (0 << 1)
-#define FORCE_LINK_PASS (1 << 1)
-#define ENABLE_AUTO_NEG_FOR_DUPLX (0 << 2)
-#define DISABLE_AUTO_NEG_FOR_DUPLX (1 << 2)
-#define ENABLE_AUTO_NEG_FOR_FLOW_CTRL (0 << 3)
-#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
-#define ADV_NO_FLOW_CTRL (0 << 4)
-#define ADV_SYMMETRIC_FLOW_CTRL (1 << 4)
-#define FORCE_FC_MODE_NO_PAUSE_DIS_TX (0 << 5)
-#define FORCE_FC_MODE_TX_PAUSE_DIS (1 << 5)
-#define FORCE_BP_MODE_NO_JAM (0 << 7)
-#define FORCE_BP_MODE_JAM_TX (1 << 7)
-#define FORCE_BP_MODE_JAM_TX_ON_RX_ERR (2 << 7)
-#define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
-#define FORCE_LINK_FAIL (0 << 10)
-#define DO_NOT_FORCE_LINK_FAIL (1 << 10)
-#define RETRANSMIT_16_ATTEMPTS (0 << 11)
-#define RETRANSMIT_FOREVER (1 << 11)
-#define ENABLE_AUTO_NEG_SPEED_GMII (0 << 13)
-#define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
-#define DTE_ADV_0 (0 << 14)
-#define DTE_ADV_1 (1 << 14)
-#define DISABLE_AUTO_NEG_BYPASS (0 << 15)
-#define ENABLE_AUTO_NEG_BYPASS (1 << 15)
-#define AUTO_NEG_NO_CHANGE (0 << 16)
-#define RESTART_AUTO_NEG (1 << 16)
-#define MAX_RX_PACKET_1518BYTE (0 << 17)
+
+/*
+ * Port serial control register.
+ */
+#define SET_MII_SPEED_TO_100 (1 << 24)
+#define SET_GMII_SPEED_TO_1000 (1 << 23)
+#define SET_FULL_DUPLEX_MODE (1 << 21)
#define MAX_RX_PACKET_1522BYTE (1 << 17)
-#define MAX_RX_PACKET_1552BYTE (2 << 17)
-#define MAX_RX_PACKET_9022BYTE (3 << 17)
-#define MAX_RX_PACKET_9192BYTE (4 << 17)
#define MAX_RX_PACKET_9700BYTE (5 << 17)
#define MAX_RX_PACKET_MASK (7 << 17)
-#define CLR_EXT_LOOPBACK (0 << 20)
-#define SET_EXT_LOOPBACK (1 << 20)
-#define SET_HALF_DUPLEX_MODE (0 << 21)
-#define SET_FULL_DUPLEX_MODE (1 << 21)
-#define DISABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX (0 << 22)
-#define ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX (1 << 22)
-#define SET_GMII_SPEED_TO_10_100 (0 << 23)
-#define SET_GMII_SPEED_TO_1000 (1 << 23)
-#define SET_MII_SPEED_TO_10 (0 << 24)
-#define SET_MII_SPEED_TO_100 (1 << 24)
+#define DISABLE_AUTO_NEG_SPEED_GMII (1 << 13)
+#define DO_NOT_FORCE_LINK_FAIL (1 << 10)
+#define SERIAL_PORT_CONTROL_RESERVED (1 << 9)
+#define DISABLE_AUTO_NEG_FOR_FLOW_CTRL (1 << 3)
+#define DISABLE_AUTO_NEG_FOR_DUPLEX (1 << 2)
+#define FORCE_LINK_PASS (1 << 1)
+#define SERIAL_PORT_ENABLE (1 << 0)
+
+#define DEFAULT_RX_QUEUE_SIZE 400
+#define DEFAULT_TX_QUEUE_SIZE 800
-#define PORT_SERIAL_CONTROL_DEFAULT_VALUE \
- DO_NOT_FORCE_LINK_PASS | \
- ENABLE_AUTO_NEG_FOR_DUPLX | \
- DISABLE_AUTO_NEG_FOR_FLOW_CTRL | \
- ADV_SYMMETRIC_FLOW_CTRL | \
- FORCE_FC_MODE_NO_PAUSE_DIS_TX | \
- FORCE_BP_MODE_NO_JAM | \
- (1 << 9) /* reserved */ | \
- DO_NOT_FORCE_LINK_FAIL | \
- RETRANSMIT_16_ATTEMPTS | \
- ENABLE_AUTO_NEG_SPEED_GMII | \
- DTE_ADV_0 | \
- DISABLE_AUTO_NEG_BYPASS | \
- AUTO_NEG_NO_CHANGE | \
- MAX_RX_PACKET_9700BYTE | \
- CLR_EXT_LOOPBACK | \
- SET_FULL_DUPLEX_MODE | \
- ENABLE_FLOW_CTRL_TX_RX_IN_FULL_DUPLEX
-
-/* These macros describe Ethernet Serial Status reg (PSR) bits */
-#define PORT_STATUS_MODE_10_BIT (1 << 0)
-#define PORT_STATUS_LINK_UP (1 << 1)
-#define PORT_STATUS_FULL_DUPLEX (1 << 2)
-#define PORT_STATUS_FLOW_CONTROL (1 << 3)
-#define PORT_STATUS_GMII_1000 (1 << 4)
-#define PORT_STATUS_MII_100 (1 << 5)
-/* PSR bit 6 is undocumented */
-#define PORT_STATUS_TX_IN_PROGRESS (1 << 7)
-#define PORT_STATUS_AUTONEG_BYPASSED (1 << 8)
-#define PORT_STATUS_PARTITION (1 << 9)
-#define PORT_STATUS_TX_FIFO_EMPTY (1 << 10)
-/* PSR bits 11-31 are reserved */
-
-#define PORT_DEFAULT_TRANSMIT_QUEUE_SIZE 800
-#define PORT_DEFAULT_RECEIVE_QUEUE_SIZE 400
-
-#define DESC_SIZE 64
-
-#define ETH_RX_QUEUES_ENABLED (1 << 0) /* use only Q0 for receive */
-#define ETH_TX_QUEUES_ENABLED (1 << 0) /* use only Q0 for transmit */
-
-#define ETH_INT_CAUSE_RX_DONE (ETH_RX_QUEUES_ENABLED << 2)
-#define ETH_INT_CAUSE_RX_ERROR (ETH_RX_QUEUES_ENABLED << 9)
-#define ETH_INT_CAUSE_RX (ETH_INT_CAUSE_RX_DONE | ETH_INT_CAUSE_RX_ERROR)
-#define ETH_INT_CAUSE_EXT 0x00000002
-#define ETH_INT_UNMASK_ALL (ETH_INT_CAUSE_RX | ETH_INT_CAUSE_EXT)
-
-#define ETH_INT_CAUSE_TX_DONE (ETH_TX_QUEUES_ENABLED << 0)
-#define ETH_INT_CAUSE_TX_ERROR (ETH_TX_QUEUES_ENABLED << 8)
-#define ETH_INT_CAUSE_TX (ETH_INT_CAUSE_TX_DONE | ETH_INT_CAUSE_TX_ERROR)
-#define ETH_INT_CAUSE_PHY 0x00010000
-#define ETH_INT_CAUSE_STATE 0x00100000
-#define ETH_INT_UNMASK_ALL_EXT (ETH_INT_CAUSE_TX | ETH_INT_CAUSE_PHY | \
- ETH_INT_CAUSE_STATE)
-
-#define ETH_INT_MASK_ALL 0x00000000
-#define ETH_INT_MASK_ALL_EXT 0x00000000
-
-#define PHY_WAIT_ITERATIONS 1000 /* 1000 iterations * 10uS = 10mS max */
-#define PHY_WAIT_MICRO_SECONDS 10
-
-/* Buffer offset from buffer pointer */
-#define RX_BUF_OFFSET 0x2
-
-/* Gigabit Ethernet Unit Global Registers */
-
-/* MIB Counters register definitions */
-#define ETH_MIB_GOOD_OCTETS_RECEIVED_LOW 0x0
-#define ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH 0x4
-#define ETH_MIB_BAD_OCTETS_RECEIVED 0x8
-#define ETH_MIB_INTERNAL_MAC_TRANSMIT_ERR 0xc
-#define ETH_MIB_GOOD_FRAMES_RECEIVED 0x10
-#define ETH_MIB_BAD_FRAMES_RECEIVED 0x14
-#define ETH_MIB_BROADCAST_FRAMES_RECEIVED 0x18
-#define ETH_MIB_MULTICAST_FRAMES_RECEIVED 0x1c
-#define ETH_MIB_FRAMES_64_OCTETS 0x20
-#define ETH_MIB_FRAMES_65_TO_127_OCTETS 0x24
-#define ETH_MIB_FRAMES_128_TO_255_OCTETS 0x28
-#define ETH_MIB_FRAMES_256_TO_511_OCTETS 0x2c
-#define ETH_MIB_FRAMES_512_TO_1023_OCTETS 0x30
-#define ETH_MIB_FRAMES_1024_TO_MAX_OCTETS 0x34
-#define ETH_MIB_GOOD_OCTETS_SENT_LOW 0x38
-#define ETH_MIB_GOOD_OCTETS_SENT_HIGH 0x3c
-#define ETH_MIB_GOOD_FRAMES_SENT 0x40
-#define ETH_MIB_EXCESSIVE_COLLISION 0x44
-#define ETH_MIB_MULTICAST_FRAMES_SENT 0x48
-#define ETH_MIB_BROADCAST_FRAMES_SENT 0x4c
-#define ETH_MIB_UNREC_MAC_CONTROL_RECEIVED 0x50
-#define ETH_MIB_FC_SENT 0x54
-#define ETH_MIB_GOOD_FC_RECEIVED 0x58
-#define ETH_MIB_BAD_FC_RECEIVED 0x5c
-#define ETH_MIB_UNDERSIZE_RECEIVED 0x60
-#define ETH_MIB_FRAGMENTS_RECEIVED 0x64
-#define ETH_MIB_OVERSIZE_RECEIVED 0x68
-#define ETH_MIB_JABBER_RECEIVED 0x6c
-#define ETH_MIB_MAC_RECEIVE_ERROR 0x70
-#define ETH_MIB_BAD_CRC_EVENT 0x74
-#define ETH_MIB_COLLISION 0x78
-#define ETH_MIB_LATE_COLLISION 0x7c
-
-/* Port serial status reg (PSR) */
-#define ETH_INTERFACE_PCM 0x00000001
-#define ETH_LINK_IS_UP 0x00000002
-#define ETH_PORT_AT_FULL_DUPLEX 0x00000004
-#define ETH_RX_FLOW_CTRL_ENABLED 0x00000008
-#define ETH_GMII_SPEED_1000 0x00000010
-#define ETH_MII_SPEED_100 0x00000020
-#define ETH_TX_IN_PROGRESS 0x00000080
-#define ETH_BYPASS_ACTIVE 0x00000100
-#define ETH_PORT_AT_PARTITION_STATE 0x00000200
-#define ETH_PORT_TX_FIFO_EMPTY 0x00000400
-
-/* SMI reg */
-#define ETH_SMI_BUSY 0x10000000 /* 0 - Write, 1 - Read */
-#define ETH_SMI_READ_VALID 0x08000000 /* 0 - Write, 1 - Read */
-#define ETH_SMI_OPCODE_WRITE 0 /* Completion of Read */
-#define ETH_SMI_OPCODE_READ 0x04000000 /* Operation is in progress */
-
-/* Interrupt Cause Register Bit Definitions */
-
-/* SDMA command status fields macros */
-
-/* Tx & Rx descriptors status */
-#define ETH_ERROR_SUMMARY 0x00000001
-
-/* Tx & Rx descriptors command */
-#define ETH_BUFFER_OWNED_BY_DMA 0x80000000
-
-/* Tx descriptors status */
-#define ETH_LC_ERROR 0
-#define ETH_UR_ERROR 0x00000002
-#define ETH_RL_ERROR 0x00000004
-#define ETH_LLC_SNAP_FORMAT 0x00000200
-
-/* Rx descriptors status */
-#define ETH_OVERRUN_ERROR 0x00000002
-#define ETH_MAX_FRAME_LENGTH_ERROR 0x00000004
-#define ETH_RESOURCE_ERROR 0x00000006
-#define ETH_VLAN_TAGGED 0x00080000
-#define ETH_BPDU_FRAME 0x00100000
-#define ETH_UDP_FRAME_OVER_IP_V_4 0x00200000
-#define ETH_OTHER_FRAME_TYPE 0x00400000
-#define ETH_LAYER_2_IS_ETH_V_2 0x00800000
-#define ETH_FRAME_TYPE_IP_V_4 0x01000000
-#define ETH_FRAME_HEADER_OK 0x02000000
-#define ETH_RX_LAST_DESC 0x04000000
-#define ETH_RX_FIRST_DESC 0x08000000
-#define ETH_UNKNOWN_DESTINATION_ADDR 0x10000000
-#define ETH_RX_ENABLE_INTERRUPT 0x20000000
-#define ETH_LAYER_4_CHECKSUM_OK 0x40000000
-
-/* Rx descriptors byte count */
-#define ETH_FRAME_FRAGMENTED 0x00000004
-
-/* Tx descriptors command */
-#define ETH_LAYER_4_CHECKSUM_FIRST_DESC 0x00000400
-#define ETH_FRAME_SET_TO_VLAN 0x00008000
-#define ETH_UDP_FRAME 0x00010000
-#define ETH_GEN_TCP_UDP_CHECKSUM 0x00020000
-#define ETH_GEN_IP_V_4_CHECKSUM 0x00040000
-#define ETH_ZERO_PADDING 0x00080000
-#define ETH_TX_LAST_DESC 0x00100000
-#define ETH_TX_FIRST_DESC 0x00200000
-#define ETH_GEN_CRC 0x00400000
-#define ETH_TX_ENABLE_INTERRUPT 0x00800000
-#define ETH_AUTO_MODE 0x40000000
-
-#define ETH_TX_IHL_SHIFT 11
-
-/* typedefs */
-
-typedef enum _eth_func_ret_status {
- ETH_OK, /* Returned as expected. */
- ETH_ERROR, /* Fundamental error. */
- ETH_RETRY, /* Could not process request. Try later.*/
- ETH_END_OF_JOB, /* Ring has nothing to process. */
- ETH_QUEUE_FULL, /* Ring resource error. */
- ETH_QUEUE_LAST_RESOURCE /* Ring resources about to exhaust. */
-} ETH_FUNC_RET_STATUS;
-/* These are for big-endian machines. Little endian needs different
- * definitions.
+/*
+ * RX/TX descriptors.
*/
#if defined(__BIG_ENDIAN)
-struct eth_rx_desc {
+struct rx_desc {
u16 byte_cnt; /* Descriptor buffer byte count */
u16 buf_size; /* Buffer size */
u32 cmd_sts; /* Descriptor command status */
@@ -441,7 +180,7 @@
u32 buf_ptr; /* Descriptor buffer pointer */
};
-struct eth_tx_desc {
+struct tx_desc {
u16 byte_cnt; /* buffer byte count */
u16 l4i_chk; /* CPU provided TCP checksum */
u32 cmd_sts; /* Command/status field */
@@ -449,7 +188,7 @@
u32 buf_ptr; /* pointer to buffer for this descriptor*/
};
#elif defined(__LITTLE_ENDIAN)
-struct eth_rx_desc {
+struct rx_desc {
u32 cmd_sts; /* Descriptor command status */
u16 buf_size; /* Buffer size */
u16 byte_cnt; /* Descriptor buffer byte count */
@@ -457,7 +196,7 @@
u32 next_desc_ptr; /* Next descriptor pointer */
};
-struct eth_tx_desc {
+struct tx_desc {
u32 cmd_sts; /* Command/status field */
u16 l4i_chk; /* CPU provided TCP checksum */
u16 byte_cnt; /* buffer byte count */
@@ -468,18 +207,59 @@
#error One of __BIG_ENDIAN or __LITTLE_ENDIAN must be defined
#endif
-/* Unified struct for Rx and Tx operations. The user is not required to */
-/* be familier with neither Tx nor Rx descriptors. */
-struct pkt_info {
- unsigned short byte_cnt; /* Descriptor buffer byte count */
- unsigned short l4i_chk; /* Tx CPU provided TCP Checksum */
- unsigned int cmd_sts; /* Descriptor command status */
- dma_addr_t buf_ptr; /* Descriptor buffer pointer */
- struct sk_buff *return_info; /* User resource return information */
+/* RX & TX descriptor command */
+#define BUFFER_OWNED_BY_DMA 0x80000000
+
+/* RX & TX descriptor status */
+#define ERROR_SUMMARY 0x00000001
+
+/* RX descriptor status */
+#define LAYER_4_CHECKSUM_OK 0x40000000
+#define RX_ENABLE_INTERRUPT 0x20000000
+#define RX_FIRST_DESC 0x08000000
+#define RX_LAST_DESC 0x04000000
+
+/* TX descriptor command */
+#define TX_ENABLE_INTERRUPT 0x00800000
+#define GEN_CRC 0x00400000
+#define TX_FIRST_DESC 0x00200000
+#define TX_LAST_DESC 0x00100000
+#define ZERO_PADDING 0x00080000
+#define GEN_IP_V4_CHECKSUM 0x00040000
+#define GEN_TCP_UDP_CHECKSUM 0x00020000
+#define UDP_FRAME 0x00010000
+
+#define TX_IHL_SHIFT 11
+
+
+/* global *******************************************************************/
+struct mv643xx_eth_shared_private {
+ /*
+ * Ethernet controller base address.
+ */
+ void __iomem *base;
+
+ /*
+ * Protects access to SMI_REG, which is shared between ports.
+ */
+ spinlock_t phy_lock;
+
+ /*
+ * Per-port MBUS window access register value.
+ */
+ u32 win_protect;
+
+ /*
+ * Hardware-specific parameters.
+ */
+ unsigned int t_clk;
+ int extended_rx_coal_limit;
+ int tx_bw_control_moved;
};
-/* Ethernet port specific information */
-struct mv643xx_mib_counters {
+
+/* per-port *****************************************************************/
+struct mib_counters {
u64 good_octets_received;
u32 bad_octets_received;
u32 internal_mac_transmit_err;
@@ -512,461 +292,282 @@
u32 late_collision;
};
-struct mv643xx_shared_private {
- void __iomem *eth_base;
-
- /* used to protect SMI_REG, which is shared across ports */
- spinlock_t phy_lock;
-
- u32 win_protect;
-
- unsigned int t_clk;
-};
-
-struct mv643xx_private {
- struct mv643xx_shared_private *shared;
- int port_num; /* User Ethernet port number */
-
- struct mv643xx_shared_private *shared_smi;
+struct rx_queue {
+ int index;
- u32 rx_sram_addr; /* Base address of rx sram area */
- u32 rx_sram_size; /* Size of rx sram area */
- u32 tx_sram_addr; /* Base address of tx sram area */
- u32 tx_sram_size; /* Size of tx sram area */
+ int rx_ring_size;
- int rx_resource_err; /* Rx ring resource error flag */
+ int rx_desc_count;
+ int rx_curr_desc;
+ int rx_used_desc;
- /* Tx/Rx rings managment indexes fields. For driver use */
+ struct rx_desc *rx_desc_area;
+ dma_addr_t rx_desc_dma;
+ int rx_desc_area_size;
+ struct sk_buff **rx_skb;
- /* Next available and first returning Rx resource */
- int rx_curr_desc_q, rx_used_desc_q;
+ struct timer_list rx_oom;
+};
- /* Next available and first returning Tx resource */
- int tx_curr_desc_q, tx_used_desc_q;
+struct tx_queue {
+ int index;
-#ifdef MV643XX_TX_FAST_REFILL
- u32 tx_clean_threshold;
-#endif
+ int tx_ring_size;
- struct eth_rx_desc *p_rx_desc_area;
- dma_addr_t rx_desc_dma;
- int rx_desc_area_size;
- struct sk_buff **rx_skb;
+ int tx_desc_count;
+ int tx_curr_desc;
+ int tx_used_desc;
- struct eth_tx_desc *p_tx_desc_area;
+ struct tx_desc *tx_desc_area;
dma_addr_t tx_desc_dma;
int tx_desc_area_size;
struct sk_buff **tx_skb;
+};
- struct work_struct tx_timeout_task;
+struct mv643xx_eth_private {
+ struct mv643xx_eth_shared_private *shared;
+ int port_num;
struct net_device *dev;
- struct napi_struct napi;
- struct net_device_stats stats;
- struct mv643xx_mib_counters mib_counters;
+
+ struct mv643xx_eth_shared_private *shared_smi;
+ int phy_addr;
+
spinlock_t lock;
- /* Size of Tx Ring per queue */
- int tx_ring_size;
- /* Number of tx descriptors in use */
- int tx_desc_count;
- /* Size of Rx Ring per queue */
- int rx_ring_size;
- /* Number of rx descriptors in use */
- int rx_desc_count;
+
+ struct mib_counters mib_counters;
+ struct work_struct tx_timeout_task;
+ struct mii_if_info mii;
/*
- * Used in case RX Ring is empty, which can be caused when
- * system does not have resources (skb's)
+ * RX state.
*/
- struct timer_list timeout;
-
- u32 rx_int_coal;
- u32 tx_int_coal;
- struct mii_if_info mii;
-};
+ int default_rx_ring_size;
+ unsigned long rx_desc_sram_addr;
+ int rx_desc_sram_size;
+ u8 rxq_mask;
+ int rxq_primary;
+ struct napi_struct napi;
+ struct rx_queue rxq[8];
-/* Static function declarations */
-static void eth_port_init(struct mv643xx_private *mp);
-static void eth_port_reset(struct mv643xx_private *mp);
-static void eth_port_start(struct net_device *dev);
-
-static void ethernet_phy_reset(struct mv643xx_private *mp);
-
-static void eth_port_write_smi_reg(struct mv643xx_private *mp,
- unsigned int phy_reg, unsigned int value);
-
-static void eth_port_read_smi_reg(struct mv643xx_private *mp,
- unsigned int phy_reg, unsigned int *value);
-
-static void eth_clear_mib_counters(struct mv643xx_private *mp);
-
-static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info);
-static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info);
-
-static void eth_port_uc_addr_get(struct mv643xx_private *mp,
- unsigned char *p_addr);
-static void eth_port_uc_addr_set(struct mv643xx_private *mp,
- unsigned char *p_addr);
-static void eth_port_set_multicast_list(struct net_device *);
-static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp,
- unsigned int queues);
-static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp,
- unsigned int queues);
-static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp);
-static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp);
-static int mv643xx_eth_open(struct net_device *);
-static int mv643xx_eth_stop(struct net_device *);
-static void eth_port_init_mac_tables(struct mv643xx_private *mp);
-#ifdef MV643XX_NAPI
-static int mv643xx_poll(struct napi_struct *napi, int budget);
+ /*
+ * TX state.
+ */
+ int default_tx_ring_size;
+ unsigned long tx_desc_sram_addr;
+ int tx_desc_sram_size;
+ u8 txq_mask;
+ int txq_primary;
+ struct tx_queue txq[8];
+#ifdef MV643XX_ETH_TX_FAST_REFILL
+ int tx_clean_threshold;
#endif
-static int ethernet_phy_get(struct mv643xx_private *mp);
-static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr);
-static int ethernet_phy_detect(struct mv643xx_private *mp);
-static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location);
-static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val);
-static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd);
-static const struct ethtool_ops mv643xx_ethtool_ops;
+};
-static char mv643xx_driver_name[] = "mv643xx_eth";
-static char mv643xx_driver_version[] = "1.0";
-static inline u32 rdl(struct mv643xx_private *mp, int offset)
+/* port register accessors **************************************************/
+static inline u32 rdl(struct mv643xx_eth_private *mp, int offset)
{
- return readl(mp->shared->eth_base + offset);
+ return readl(mp->shared->base + offset);
}
-static inline void wrl(struct mv643xx_private *mp, int offset, u32 data)
+static inline void wrl(struct mv643xx_eth_private *mp, int offset, u32 data)
{
- writel(data, mp->shared->eth_base + offset);
+ writel(data, mp->shared->base + offset);
}
-/*
- * Changes MTU (maximum transfer unit) of the gigabit ethenret port
- *
- * Input : pointer to ethernet interface network device structure
- * new mtu size
- * Output : 0 upon success, -EINVAL upon failure
- */
-static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
-{
- if ((new_mtu > 9500) || (new_mtu < 64))
- return -EINVAL;
-
- dev->mtu = new_mtu;
- if (!netif_running(dev))
- return 0;
-
- /*
- * Stop and then re-open the interface. This will allocate RX
- * skbs of the new MTU.
- * There is a possible danger that the open will not succeed,
- * due to memory being full, which might fail the open function.
- */
- mv643xx_eth_stop(dev);
- if (mv643xx_eth_open(dev)) {
- printk(KERN_ERR "%s: Fatal error on opening device\n",
- dev->name);
- }
-
- return 0;
-}
-/*
- * mv643xx_eth_rx_refill_descs
- *
- * Fills / refills RX queue on a certain gigabit ethernet port
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
-static void mv643xx_eth_rx_refill_descs(struct net_device *dev)
+/* rxq/txq helper functions *************************************************/
+static struct mv643xx_eth_private *rxq_to_mp(struct rx_queue *rxq)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- struct pkt_info pkt_info;
- struct sk_buff *skb;
- int unaligned;
-
- while (mp->rx_desc_count < mp->rx_ring_size) {
- skb = dev_alloc_skb(ETH_RX_SKB_SIZE + dma_get_cache_alignment());
- if (!skb)
- break;
- mp->rx_desc_count++;
- unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
- if (unaligned)
- skb_reserve(skb, dma_get_cache_alignment() - unaligned);
- pkt_info.cmd_sts = ETH_RX_ENABLE_INTERRUPT;
- pkt_info.byte_cnt = ETH_RX_SKB_SIZE;
- pkt_info.buf_ptr = dma_map_single(NULL, skb->data,
- ETH_RX_SKB_SIZE, DMA_FROM_DEVICE);
- pkt_info.return_info = skb;
- if (eth_rx_return_buff(mp, &pkt_info) != ETH_OK) {
- printk(KERN_ERR
- "%s: Error allocating RX Ring\n", dev->name);
- break;
- }
- skb_reserve(skb, ETH_HW_IP_ALIGN);
- }
- /*
- * If RX ring is empty of SKB, set a timer to try allocating
- * again at a later time.
- */
- if (mp->rx_desc_count == 0) {
- printk(KERN_INFO "%s: Rx ring is empty\n", dev->name);
- mp->timeout.expires = jiffies + (HZ / 10); /* 100 mSec */
- add_timer(&mp->timeout);
- }
+ return container_of(rxq, struct mv643xx_eth_private, rxq[rxq->index]);
}
-/*
- * mv643xx_eth_rx_refill_descs_timer_wrapper
- *
- * Timer routine to wake up RX queue filling task. This function is
- * used only in case the RX queue is empty, and all alloc_skb has
- * failed (due to out of memory event).
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
-static inline void mv643xx_eth_rx_refill_descs_timer_wrapper(unsigned long data)
+static struct mv643xx_eth_private *txq_to_mp(struct tx_queue *txq)
{
- mv643xx_eth_rx_refill_descs((struct net_device *)data);
+ return container_of(txq, struct mv643xx_eth_private, txq[txq->index]);
}
-/*
- * mv643xx_eth_update_mac_address
- *
- * Update the MAC address of the port in the address table
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
-static void mv643xx_eth_update_mac_address(struct net_device *dev)
+static void rxq_enable(struct rx_queue *rxq)
{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- eth_port_init_mac_tables(mp);
- eth_port_uc_addr_set(mp, dev->dev_addr);
+ struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
+ wrl(mp, RXQ_COMMAND(mp->port_num), 1 << rxq->index);
}
-/*
- * mv643xx_eth_set_rx_mode
- *
- * Change from promiscuos to regular rx mode
- *
- * Input : pointer to ethernet interface network device structure
- * Output : N/A
- */
-static void mv643xx_eth_set_rx_mode(struct net_device *dev)
+static void rxq_disable(struct rx_queue *rxq)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- u32 config_reg;
-
- config_reg = rdl(mp, PORT_CONFIG_REG(mp->port_num));
- if (dev->flags & IFF_PROMISC)
- config_reg |= (u32) UNICAST_PROMISCUOUS_MODE;
- else
- config_reg &= ~(u32) UNICAST_PROMISCUOUS_MODE;
- wrl(mp, PORT_CONFIG_REG(mp->port_num), config_reg);
+ struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
+ u8 mask = 1 << rxq->index;
- eth_port_set_multicast_list(dev);
+ wrl(mp, RXQ_COMMAND(mp->port_num), mask << 8);
+ while (rdl(mp, RXQ_COMMAND(mp->port_num)) & mask)
+ udelay(10);
}
-/*
- * mv643xx_eth_set_mac_address
- *
- * Change the interface's mac address.
- * No special hardware thing should be done because interface is always
- * put in promiscuous mode.
- *
- * Input : pointer to ethernet interface network device structure and
- * a pointer to the designated entry to be added to the cache.
- * Output : zero upon success, negative upon failure
- */
-static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
+static void txq_enable(struct tx_queue *txq)
{
- int i;
-
- for (i = 0; i < 6; i++)
- /* +2 is for the offset of the HW addr type */
- dev->dev_addr[i] = ((unsigned char *)addr)[i + 2];
- mv643xx_eth_update_mac_address(dev);
- return 0;
+ struct mv643xx_eth_private *mp = txq_to_mp(txq);
+ wrl(mp, TXQ_COMMAND(mp->port_num), 1 << txq->index);
}
-/*
- * mv643xx_eth_tx_timeout
- *
- * Called upon a timeout on transmitting a packet
- *
- * Input : pointer to ethernet interface network device structure.
- * Output : N/A
- */
-static void mv643xx_eth_tx_timeout(struct net_device *dev)
+static void txq_disable(struct tx_queue *txq)
{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- printk(KERN_INFO "%s: TX timeout ", dev->name);
+ struct mv643xx_eth_private *mp = txq_to_mp(txq);
+ u8 mask = 1 << txq->index;
- /* Do the reset outside of interrupt context */
- schedule_work(&mp->tx_timeout_task);
+ wrl(mp, TXQ_COMMAND(mp->port_num), mask << 8);
+ while (rdl(mp, TXQ_COMMAND(mp->port_num)) & mask)
+ udelay(10);
}
-/*
- * mv643xx_eth_tx_timeout_task
- *
- * Actual routine to reset the adapter when a timeout on Tx has occurred
- */
-static void mv643xx_eth_tx_timeout_task(struct work_struct *ugly)
+static void __txq_maybe_wake(struct tx_queue *txq)
{
- struct mv643xx_private *mp = container_of(ugly, struct mv643xx_private,
- tx_timeout_task);
- struct net_device *dev = mp->dev;
+ struct mv643xx_eth_private *mp = txq_to_mp(txq);
- if (!netif_running(dev))
- return;
+ /*
+ * netif_{stop,wake}_queue() flow control only applies to
+ * the primary queue.
+ */
+ BUG_ON(txq->index != mp->txq_primary);
- netif_stop_queue(dev);
+ if (txq->tx_ring_size - txq->tx_desc_count >= MAX_DESCS_PER_SKB)
+ netif_wake_queue(mp->dev);
+}
- eth_port_reset(mp);
- eth_port_start(dev);
- if (mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
-}
+/* rx ***********************************************************************/
+static void txq_reclaim(struct tx_queue *txq, int force);
-/**
- * mv643xx_eth_free_tx_descs - Free the tx desc data for completed descriptors
- *
- * If force is non-zero, frees uncompleted descriptors as well
- */
-static int mv643xx_eth_free_tx_descs(struct net_device *dev, int force)
+static void rxq_refill(struct rx_queue *rxq)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- struct eth_tx_desc *desc;
- u32 cmd_sts;
- struct sk_buff *skb;
+ struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
unsigned long flags;
- int tx_index;
- dma_addr_t addr;
- int count;
- int released = 0;
-
- while (mp->tx_desc_count > 0) {
- spin_lock_irqsave(&mp->lock, flags);
-
- /* tx_desc_count might have changed before acquiring the lock */
- if (mp->tx_desc_count <= 0) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return released;
- }
-
- tx_index = mp->tx_used_desc_q;
- desc = &mp->p_tx_desc_area[tx_index];
- cmd_sts = desc->cmd_sts;
- if (!force && (cmd_sts & ETH_BUFFER_OWNED_BY_DMA)) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return released;
- }
+ spin_lock_irqsave(&mp->lock, flags);
- mp->tx_used_desc_q = (tx_index + 1) % mp->tx_ring_size;
- mp->tx_desc_count--;
+ while (rxq->rx_desc_count < rxq->rx_ring_size) {
+ int skb_size;
+ struct sk_buff *skb;
+ int unaligned;
+ int rx;
- addr = desc->buf_ptr;
- count = desc->byte_cnt;
- skb = mp->tx_skb[tx_index];
- if (skb)
- mp->tx_skb[tx_index] = NULL;
+ /*
+ * Reserve 2+14 bytes for an ethernet header (the
+ * hardware automatically prepends 2 bytes of dummy
+ * data to each received packet), 4 bytes for a VLAN
+ * header, and 4 bytes for the trailing FCS -- 24
+ * bytes total.
+ */
+ skb_size = mp->dev->mtu + 24;
- if (cmd_sts & ETH_ERROR_SUMMARY) {
- printk("%s: Error in TX\n", dev->name);
- dev->stats.tx_errors++;
- }
+ skb = dev_alloc_skb(skb_size + dma_get_cache_alignment() - 1);
+ if (skb == NULL)
+ break;
- spin_unlock_irqrestore(&mp->lock, flags);
+ unaligned = (u32)skb->data & (dma_get_cache_alignment() - 1);
+ if (unaligned)
+ skb_reserve(skb, dma_get_cache_alignment() - unaligned);
- if (cmd_sts & ETH_TX_FIRST_DESC)
- dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
- else
- dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
+ rxq->rx_desc_count++;
+ rx = rxq->rx_used_desc;
+ rxq->rx_used_desc = (rx + 1) % rxq->rx_ring_size;
+
+ rxq->rx_desc_area[rx].buf_ptr = dma_map_single(NULL, skb->data,
+ skb_size, DMA_FROM_DEVICE);
+ rxq->rx_desc_area[rx].buf_size = skb_size;
+ rxq->rx_skb[rx] = skb;
+ wmb();
+ rxq->rx_desc_area[rx].cmd_sts = BUFFER_OWNED_BY_DMA |
+ RX_ENABLE_INTERRUPT;
+ wmb();
- if (skb)
- dev_kfree_skb_irq(skb);
+ /*
+ * The hardware automatically prepends 2 bytes of
+ * dummy data to each received packet, so that the
+ * IP header ends up 16-byte aligned.
+ */
+ skb_reserve(skb, 2);
+ }
- released = 1;
+ if (rxq->rx_desc_count != rxq->rx_ring_size) {
+ rxq->rx_oom.expires = jiffies + (HZ / 10);
+ add_timer(&rxq->rx_oom);
}
- return released;
+ spin_unlock_irqrestore(&mp->lock, flags);
}
-static void mv643xx_eth_free_completed_tx_descs(struct net_device *dev)
+static inline void rxq_refill_timer_wrapper(unsigned long data)
{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- if (mv643xx_eth_free_tx_descs(dev, 0) &&
- mp->tx_ring_size - mp->tx_desc_count >= MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
+ rxq_refill((struct rx_queue *)data);
}
-static void mv643xx_eth_free_all_tx_descs(struct net_device *dev)
+static int rxq_process(struct rx_queue *rxq, int budget)
{
- mv643xx_eth_free_tx_descs(dev, 1);
-}
+ struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
+ struct net_device_stats *stats = &mp->dev->stats;
+ int rx;
-/*
- * mv643xx_eth_receive
- *
- * This function is forward packets that are received from the port's
- * queues toward kernel core or FastRoute them to another interface.
- *
- * Input : dev - a pointer to the required interface
- * max - maximum number to receive (0 means unlimted)
- *
- * Output : number of served packets
- */
-static int mv643xx_eth_receive_queue(struct net_device *dev, int budget)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- struct net_device_stats *stats = &dev->stats;
- unsigned int received_packets = 0;
- struct sk_buff *skb;
- struct pkt_info pkt_info;
-
- while (budget-- > 0 && eth_port_receive(mp, &pkt_info) == ETH_OK) {
- dma_unmap_single(NULL, pkt_info.buf_ptr, ETH_RX_SKB_SIZE,
- DMA_FROM_DEVICE);
- mp->rx_desc_count--;
- received_packets++;
+ rx = 0;
+ while (rx < budget) {
+ struct rx_desc *rx_desc;
+ unsigned int cmd_sts;
+ struct sk_buff *skb;
+ unsigned long flags;
+
+ spin_lock_irqsave(&mp->lock, flags);
+
+ rx_desc = &rxq->rx_desc_area[rxq->rx_curr_desc];
+
+ cmd_sts = rx_desc->cmd_sts;
+ if (cmd_sts & BUFFER_OWNED_BY_DMA) {
+ spin_unlock_irqrestore(&mp->lock, flags);
+ break;
+ }
+ rmb();
+
+ skb = rxq->rx_skb[rxq->rx_curr_desc];
+ rxq->rx_skb[rxq->rx_curr_desc] = NULL;
+
+ rxq->rx_curr_desc = (rxq->rx_curr_desc + 1) % rxq->rx_ring_size;
+
+ spin_unlock_irqrestore(&mp->lock, flags);
+
+ dma_unmap_single(NULL, rx_desc->buf_ptr + 2,
+ mp->dev->mtu + 24, DMA_FROM_DEVICE);
+ rxq->rx_desc_count--;
+ rx++;
/*
* Update statistics.
- * Note byte count includes 4 byte CRC count
+ *
+ * Note that the descriptor byte count includes 2 dummy
+ * bytes automatically inserted by the hardware at the
+ * start of the packet (which we don't count), and a 4
+ * byte CRC at the end of the packet (which we do count).
*/
stats->rx_packets++;
- stats->rx_bytes += pkt_info.byte_cnt;
- skb = pkt_info.return_info;
+ stats->rx_bytes += rx_desc->byte_cnt - 2;
+
/*
- * In case received a packet without first / last bits on OR
- * the error summary bit is on, the packets needs to be dropeed.
+ * In case we received a packet without first / last bits
+ * on, or the error summary bit is set, the packet needs
+ * to be dropped.
*/
- if (((pkt_info.cmd_sts
- & (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) !=
- (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC))
- || (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)) {
+ if (((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
+ (RX_FIRST_DESC | RX_LAST_DESC))
+ || (cmd_sts & ERROR_SUMMARY)) {
stats->rx_dropped++;
- if ((pkt_info.cmd_sts & (ETH_RX_FIRST_DESC |
- ETH_RX_LAST_DESC)) !=
- (ETH_RX_FIRST_DESC | ETH_RX_LAST_DESC)) {
+
+ if ((cmd_sts & (RX_FIRST_DESC | RX_LAST_DESC)) !=
+ (RX_FIRST_DESC | RX_LAST_DESC)) {
if (net_ratelimit())
- printk(KERN_ERR
- "%s: Received packet spread "
- "on multiple descriptors\n",
- dev->name);
+ dev_printk(KERN_ERR, &mp->dev->dev,
+ "received packet spanning "
+ "multiple descriptors\n");
}
- if (pkt_info.cmd_sts & ETH_ERROR_SUMMARY)
+
+ if (cmd_sts & ERROR_SUMMARY)
stats->rx_errors++;
dev_kfree_skb_irq(skb);
@@ -975,668 +576,120 @@
* The -4 is for the CRC in the trailer of the
* received packet
*/
- skb_put(skb, pkt_info.byte_cnt - 4);
+ skb_put(skb, rx_desc->byte_cnt - 2 - 4);
- if (pkt_info.cmd_sts & ETH_LAYER_4_CHECKSUM_OK) {
+ if (cmd_sts & LAYER_4_CHECKSUM_OK) {
skb->ip_summed = CHECKSUM_UNNECESSARY;
skb->csum = htons(
- (pkt_info.cmd_sts & 0x0007fff8) >> 3);
+ (cmd_sts & 0x0007fff8) >> 3);
}
- skb->protocol = eth_type_trans(skb, dev);
-#ifdef MV643XX_NAPI
+ skb->protocol = eth_type_trans(skb, mp->dev);
+#ifdef MV643XX_ETH_NAPI
netif_receive_skb(skb);
#else
netif_rx(skb);
#endif
}
- dev->last_rx = jiffies;
+
+ mp->dev->last_rx = jiffies;
}
- mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
- return received_packets;
+ rxq_refill(rxq);
+
+ return rx;
}
-/* Set the mv643xx port configuration register for the speed/duplex mode. */
-static void mv643xx_eth_update_pscr(struct net_device *dev,
- struct ethtool_cmd *ecmd)
+#ifdef MV643XX_ETH_NAPI
+static int mv643xx_eth_poll(struct napi_struct *napi, int budget)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- int port_num = mp->port_num;
- u32 o_pscr, n_pscr;
- unsigned int queues;
+ struct mv643xx_eth_private *mp;
+ int rx;
+ int i;
- o_pscr = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num));
- n_pscr = o_pscr;
+ mp = container_of(napi, struct mv643xx_eth_private, napi);
- /* clear speed, duplex and rx buffer size fields */
- n_pscr &= ~(SET_MII_SPEED_TO_100 |
- SET_GMII_SPEED_TO_1000 |
- SET_FULL_DUPLEX_MODE |
- MAX_RX_PACKET_MASK);
-
- if (ecmd->duplex == DUPLEX_FULL)
- n_pscr |= SET_FULL_DUPLEX_MODE;
-
- if (ecmd->speed == SPEED_1000)
- n_pscr |= SET_GMII_SPEED_TO_1000 |
- MAX_RX_PACKET_9700BYTE;
- else {
- if (ecmd->speed == SPEED_100)
- n_pscr |= SET_MII_SPEED_TO_100;
- n_pscr |= MAX_RX_PACKET_1522BYTE;
- }
-
- if (n_pscr != o_pscr) {
- if ((o_pscr & SERIAL_PORT_ENABLE) == 0)
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
- else {
- queues = mv643xx_eth_port_disable_tx(mp);
+#ifdef MV643XX_ETH_TX_FAST_REFILL
+ if (++mp->tx_clean_threshold > 5) {
+ mp->tx_clean_threshold = 0;
+ for (i = 0; i < 8; i++)
+ if (mp->txq_mask & (1 << i))
+ txq_reclaim(mp->txq + i, 0);
+ }
+#endif
- o_pscr &= ~SERIAL_PORT_ENABLE;
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), o_pscr);
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), n_pscr);
- if (queues)
- mv643xx_eth_port_enable_tx(mp, queues);
- }
+ rx = 0;
+ for (i = 7; rx < budget && i >= 0; i--)
+ if (mp->rxq_mask & (1 << i))
+ rx += rxq_process(mp->rxq + i, budget - rx);
+
+ if (rx < budget) {
+ netif_rx_complete(mp->dev, napi);
+ wrl(mp, INT_CAUSE(mp->port_num), 0);
+ wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
+ wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
}
+
+ return rx;
}
+#endif
-/*
- * mv643xx_eth_int_handler
- *
- * Main interrupt handler for the gigbit ethernet ports
- *
- * Input : irq - irq number (not used)
- * dev_id - a pointer to the required interface's data structure
- * regs - not used
- * Output : N/A
- */
-static irqreturn_t mv643xx_eth_int_handler(int irq, void *dev_id)
+/* tx ***********************************************************************/
+static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
{
- struct net_device *dev = (struct net_device *)dev_id;
- struct mv643xx_private *mp = netdev_priv(dev);
- u32 eth_int_cause, eth_int_cause_ext = 0;
- unsigned int port_num = mp->port_num;
-
- /* Read interrupt cause registers */
- eth_int_cause = rdl(mp, INTERRUPT_CAUSE_REG(port_num)) &
- ETH_INT_UNMASK_ALL;
- if (eth_int_cause & ETH_INT_CAUSE_EXT) {
- eth_int_cause_ext = rdl(mp,
- INTERRUPT_CAUSE_EXTEND_REG(port_num)) &
- ETH_INT_UNMASK_ALL_EXT;
- wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num),
- ~eth_int_cause_ext);
- }
-
- /* PHY status changed */
- if (eth_int_cause_ext & (ETH_INT_CAUSE_PHY | ETH_INT_CAUSE_STATE)) {
- struct ethtool_cmd cmd;
+ int frag;
- if (mii_link_ok(&mp->mii)) {
- mii_ethtool_gset(&mp->mii, &cmd);
- mv643xx_eth_update_pscr(dev, &cmd);
- mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED);
- if (!netif_carrier_ok(dev)) {
- netif_carrier_on(dev);
- if (mp->tx_ring_size - mp->tx_desc_count >=
- MAX_DESCS_PER_SKB)
- netif_wake_queue(dev);
- }
- } else if (netif_carrier_ok(dev)) {
- netif_stop_queue(dev);
- netif_carrier_off(dev);
- }
+ for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
+ skb_frag_t *fragp = &skb_shinfo(skb)->frags[frag];
+ if (fragp->size <= 8 && fragp->page_offset & 7)
+ return 1;
}
-#ifdef MV643XX_NAPI
- if (eth_int_cause & ETH_INT_CAUSE_RX) {
- /* schedule the NAPI poll routine to maintain port */
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
+ return 0;
+}
- /* wait for previous write to complete */
- rdl(mp, INTERRUPT_MASK_REG(port_num));
+static int txq_alloc_desc_index(struct tx_queue *txq)
+{
+ int tx_desc_curr;
- netif_rx_schedule(dev, &mp->napi);
- }
-#else
- if (eth_int_cause & ETH_INT_CAUSE_RX)
- mv643xx_eth_receive_queue(dev, INT_MAX);
-#endif
- if (eth_int_cause_ext & ETH_INT_CAUSE_TX)
- mv643xx_eth_free_completed_tx_descs(dev);
+ BUG_ON(txq->tx_desc_count >= txq->tx_ring_size);
- /*
- * If no real interrupt occured, exit.
- * This can happen when using gigE interrupt coalescing mechanism.
- */
- if ((eth_int_cause == 0x0) && (eth_int_cause_ext == 0x0))
- return IRQ_NONE;
+ tx_desc_curr = txq->tx_curr_desc;
+ txq->tx_curr_desc = (tx_desc_curr + 1) % txq->tx_ring_size;
- return IRQ_HANDLED;
-}
-
-#ifdef MV643XX_COAL
-
-/*
- * eth_port_set_rx_coal - Sets coalescing interrupt mechanism on RX path
- *
- * DESCRIPTION:
- * This routine sets the RX coalescing interrupt mechanism parameter.
- * This parameter is a timeout counter, that counts in 64 t_clk
- * chunks ; that when timeout event occurs a maskable interrupt
- * occurs.
- * The parameter is calculated using the tClk of the MV-643xx chip
- * , and the required delay of the interrupt in usec.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet port
- * unsigned int delay Delay in usec
- *
- * OUTPUT:
- * Interrupt coalescing mechanism value is set in MV-643xx chip.
- *
- * RETURN:
- * The interrupt coalescing value set in the gigE port.
- *
- */
-static unsigned int eth_port_set_rx_coal(struct mv643xx_private *mp,
- unsigned int delay)
-{
- unsigned int port_num = mp->port_num;
- unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
-
- /* Set RX Coalescing mechanism */
- wrl(mp, SDMA_CONFIG_REG(port_num),
- ((coal & 0x3fff) << 8) |
- (rdl(mp, SDMA_CONFIG_REG(port_num))
- & 0xffc000ff));
-
- return coal;
-}
-#endif
-
-/*
- * eth_port_set_tx_coal - Sets coalescing interrupt mechanism on TX path
- *
- * DESCRIPTION:
- * This routine sets the TX coalescing interrupt mechanism parameter.
- * This parameter is a timeout counter, that counts in 64 t_clk
- * chunks ; that when timeout event occurs a maskable interrupt
- * occurs.
- * The parameter is calculated using the t_cLK frequency of the
- * MV-643xx chip and the required delay in the interrupt in uSec
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet port
- * unsigned int delay Delay in uSeconds
- *
- * OUTPUT:
- * Interrupt coalescing mechanism value is set in MV-643xx chip.
- *
- * RETURN:
- * The interrupt coalescing value set in the gigE port.
- *
- */
-static unsigned int eth_port_set_tx_coal(struct mv643xx_private *mp,
- unsigned int delay)
-{
- unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
-
- /* Set TX Coalescing mechanism */
- wrl(mp, TX_FIFO_URGENT_THRESHOLD_REG(mp->port_num), coal << 4);
-
- return coal;
-}
-
-/*
- * ether_init_rx_desc_ring - Curve a Rx chain desc list and buffer in memory.
- *
- * DESCRIPTION:
- * This function prepares a Rx chained list of descriptors and packet
- * buffers in a form of a ring. The routine must be called after port
- * initialization routine and before port start routine.
- * The Ethernet SDMA engine uses CPU bus addresses to access the various
- * devices in the system (i.e. DRAM). This function uses the ethernet
- * struct 'virtual to physical' routine (set by the user) to set the ring
- * with physical addresses.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- *
- * OUTPUT:
- * The routine updates the Ethernet port control struct with information
- * regarding the Rx descriptors and buffers.
- *
- * RETURN:
- * None.
- */
-static void ether_init_rx_desc_ring(struct mv643xx_private *mp)
-{
- volatile struct eth_rx_desc *p_rx_desc;
- int rx_desc_num = mp->rx_ring_size;
- int i;
-
- /* initialize the next_desc_ptr links in the Rx descriptors ring */
- p_rx_desc = (struct eth_rx_desc *)mp->p_rx_desc_area;
- for (i = 0; i < rx_desc_num; i++) {
- p_rx_desc[i].next_desc_ptr = mp->rx_desc_dma +
- ((i + 1) % rx_desc_num) * sizeof(struct eth_rx_desc);
- }
-
- /* Save Rx desc pointer to driver struct. */
- mp->rx_curr_desc_q = 0;
- mp->rx_used_desc_q = 0;
-
- mp->rx_desc_area_size = rx_desc_num * sizeof(struct eth_rx_desc);
-}
-
-/*
- * ether_init_tx_desc_ring - Curve a Tx chain desc list and buffer in memory.
- *
- * DESCRIPTION:
- * This function prepares a Tx chained list of descriptors and packet
- * buffers in a form of a ring. The routine must be called after port
- * initialization routine and before port start routine.
- * The Ethernet SDMA engine uses CPU bus addresses to access the various
- * devices in the system (i.e. DRAM). This function uses the ethernet
- * struct 'virtual to physical' routine (set by the user) to set the ring
- * with physical addresses.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- *
- * OUTPUT:
- * The routine updates the Ethernet port control struct with information
- * regarding the Tx descriptors and buffers.
- *
- * RETURN:
- * None.
- */
-static void ether_init_tx_desc_ring(struct mv643xx_private *mp)
-{
- int tx_desc_num = mp->tx_ring_size;
- struct eth_tx_desc *p_tx_desc;
- int i;
-
- /* Initialize the next_desc_ptr links in the Tx descriptors ring */
- p_tx_desc = (struct eth_tx_desc *)mp->p_tx_desc_area;
- for (i = 0; i < tx_desc_num; i++) {
- p_tx_desc[i].next_desc_ptr = mp->tx_desc_dma +
- ((i + 1) % tx_desc_num) * sizeof(struct eth_tx_desc);
- }
-
- mp->tx_curr_desc_q = 0;
- mp->tx_used_desc_q = 0;
-
- mp->tx_desc_area_size = tx_desc_num * sizeof(struct eth_tx_desc);
-}
-
-static int mv643xx_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- int err;
-
- spin_lock_irq(&mp->lock);
- err = mii_ethtool_sset(&mp->mii, cmd);
- spin_unlock_irq(&mp->lock);
-
- return err;
-}
-
-static int mv643xx_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- int err;
-
- spin_lock_irq(&mp->lock);
- err = mii_ethtool_gset(&mp->mii, cmd);
- spin_unlock_irq(&mp->lock);
-
- /* The PHY may support 1000baseT_Half, but the mv643xx does not */
- cmd->supported &= ~SUPPORTED_1000baseT_Half;
- cmd->advertising &= ~ADVERTISED_1000baseT_Half;
-
- return err;
-}
-
-/*
- * mv643xx_eth_open
- *
- * This function is called when openning the network device. The function
- * should initialize all the hardware, initialize cyclic Rx/Tx
- * descriptors chain and buffers and allocate an IRQ to the network
- * device.
- *
- * Input : a pointer to the network device structure
- *
- * Output : zero of success , nonzero if fails.
- */
-
-static int mv643xx_eth_open(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- unsigned int size;
- int err;
-
- /* Clear any pending ethernet port interrupts */
- wrl(mp, INTERRUPT_CAUSE_REG(port_num), 0);
- wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
- /* wait for previous write to complete */
- rdl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num));
-
- err = request_irq(dev->irq, mv643xx_eth_int_handler,
- IRQF_SHARED | IRQF_SAMPLE_RANDOM, dev->name, dev);
- if (err) {
- printk(KERN_ERR "%s: Can not assign IRQ\n", dev->name);
- return -EAGAIN;
- }
-
- eth_port_init(mp);
-
- memset(&mp->timeout, 0, sizeof(struct timer_list));
- mp->timeout.function = mv643xx_eth_rx_refill_descs_timer_wrapper;
- mp->timeout.data = (unsigned long)dev;
-
- /* Allocate RX and TX skb rings */
- mp->rx_skb = kmalloc(sizeof(*mp->rx_skb) * mp->rx_ring_size,
- GFP_KERNEL);
- if (!mp->rx_skb) {
- printk(KERN_ERR "%s: Cannot allocate Rx skb ring\n", dev->name);
- err = -ENOMEM;
- goto out_free_irq;
- }
- mp->tx_skb = kmalloc(sizeof(*mp->tx_skb) * mp->tx_ring_size,
- GFP_KERNEL);
- if (!mp->tx_skb) {
- printk(KERN_ERR "%s: Cannot allocate Tx skb ring\n", dev->name);
- err = -ENOMEM;
- goto out_free_rx_skb;
- }
-
- /* Allocate TX ring */
- mp->tx_desc_count = 0;
- size = mp->tx_ring_size * sizeof(struct eth_tx_desc);
- mp->tx_desc_area_size = size;
-
- if (mp->tx_sram_size) {
- mp->p_tx_desc_area = ioremap(mp->tx_sram_addr,
- mp->tx_sram_size);
- mp->tx_desc_dma = mp->tx_sram_addr;
- } else
- mp->p_tx_desc_area = dma_alloc_coherent(NULL, size,
- &mp->tx_desc_dma,
- GFP_KERNEL);
-
- if (!mp->p_tx_desc_area) {
- printk(KERN_ERR "%s: Cannot allocate Tx Ring (size %d bytes)\n",
- dev->name, size);
- err = -ENOMEM;
- goto out_free_tx_skb;
- }
- BUG_ON((u32) mp->p_tx_desc_area & 0xf); /* check 16-byte alignment */
- memset((void *)mp->p_tx_desc_area, 0, mp->tx_desc_area_size);
-
- ether_init_tx_desc_ring(mp);
-
- /* Allocate RX ring */
- mp->rx_desc_count = 0;
- size = mp->rx_ring_size * sizeof(struct eth_rx_desc);
- mp->rx_desc_area_size = size;
-
- if (mp->rx_sram_size) {
- mp->p_rx_desc_area = ioremap(mp->rx_sram_addr,
- mp->rx_sram_size);
- mp->rx_desc_dma = mp->rx_sram_addr;
- } else
- mp->p_rx_desc_area = dma_alloc_coherent(NULL, size,
- &mp->rx_desc_dma,
- GFP_KERNEL);
-
- if (!mp->p_rx_desc_area) {
- printk(KERN_ERR "%s: Cannot allocate Rx ring (size %d bytes)\n",
- dev->name, size);
- printk(KERN_ERR "%s: Freeing previously allocated TX queues...",
- dev->name);
- if (mp->rx_sram_size)
- iounmap(mp->p_tx_desc_area);
- else
- dma_free_coherent(NULL, mp->tx_desc_area_size,
- mp->p_tx_desc_area, mp->tx_desc_dma);
- err = -ENOMEM;
- goto out_free_tx_skb;
- }
- memset((void *)mp->p_rx_desc_area, 0, size);
-
- ether_init_rx_desc_ring(mp);
-
- mv643xx_eth_rx_refill_descs(dev); /* Fill RX ring with skb's */
-
-#ifdef MV643XX_NAPI
- napi_enable(&mp->napi);
-#endif
-
- eth_port_start(dev);
-
- /* Interrupt Coalescing */
-
-#ifdef MV643XX_COAL
- mp->rx_int_coal =
- eth_port_set_rx_coal(mp, MV643XX_RX_COAL);
-#endif
-
- mp->tx_int_coal =
- eth_port_set_tx_coal(mp, MV643XX_TX_COAL);
-
- /* Unmask phy and link status changes interrupts */
- wrl(mp, INTERRUPT_EXTEND_MASK_REG(port_num), ETH_INT_UNMASK_ALL_EXT);
-
- /* Unmask RX buffer and TX end interrupt */
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
-
- return 0;
-
-out_free_tx_skb:
- kfree(mp->tx_skb);
-out_free_rx_skb:
- kfree(mp->rx_skb);
-out_free_irq:
- free_irq(dev->irq, dev);
-
- return err;
-}
-
-static void mv643xx_eth_free_tx_rings(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- /* Stop Tx Queues */
- mv643xx_eth_port_disable_tx(mp);
-
- /* Free outstanding skb's on TX ring */
- mv643xx_eth_free_all_tx_descs(dev);
-
- BUG_ON(mp->tx_used_desc_q != mp->tx_curr_desc_q);
-
- /* Free TX ring */
- if (mp->tx_sram_size)
- iounmap(mp->p_tx_desc_area);
- else
- dma_free_coherent(NULL, mp->tx_desc_area_size,
- mp->p_tx_desc_area, mp->tx_desc_dma);
-}
-
-static void mv643xx_eth_free_rx_rings(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- int curr;
-
- /* Stop RX Queues */
- mv643xx_eth_port_disable_rx(mp);
-
- /* Free preallocated skb's on RX rings */
- for (curr = 0; mp->rx_desc_count && curr < mp->rx_ring_size; curr++) {
- if (mp->rx_skb[curr]) {
- dev_kfree_skb(mp->rx_skb[curr]);
- mp->rx_desc_count--;
- }
- }
-
- if (mp->rx_desc_count)
- printk(KERN_ERR
- "%s: Error in freeing Rx Ring. %d skb's still"
- " stuck in RX Ring - ignoring them\n", dev->name,
- mp->rx_desc_count);
- /* Free RX ring */
- if (mp->rx_sram_size)
- iounmap(mp->p_rx_desc_area);
- else
- dma_free_coherent(NULL, mp->rx_desc_area_size,
- mp->p_rx_desc_area, mp->rx_desc_dma);
-}
-
-/*
- * mv643xx_eth_stop
- *
- * This function is used when closing the network device.
- * It updates the hardware,
- * release all memory that holds buffers and descriptors and release the IRQ.
- * Input : a pointer to the device structure
- * Output : zero if success , nonzero if fails
- */
-
-static int mv643xx_eth_stop(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
-
- /* Mask all interrupts on ethernet port */
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
- /* wait for previous write to complete */
- rdl(mp, INTERRUPT_MASK_REG(port_num));
-
-#ifdef MV643XX_NAPI
- napi_disable(&mp->napi);
-#endif
- netif_carrier_off(dev);
- netif_stop_queue(dev);
-
- eth_port_reset(mp);
-
- mv643xx_eth_free_tx_rings(dev);
- mv643xx_eth_free_rx_rings(dev);
-
- free_irq(dev->irq, dev);
-
- return 0;
-}
-
-#ifdef MV643XX_NAPI
-/*
- * mv643xx_poll
- *
- * This function is used in case of NAPI
- */
-static int mv643xx_poll(struct napi_struct *napi, int budget)
-{
- struct mv643xx_private *mp = container_of(napi, struct mv643xx_private, napi);
- struct net_device *dev = mp->dev;
- unsigned int port_num = mp->port_num;
- int work_done;
-
-#ifdef MV643XX_TX_FAST_REFILL
- if (++mp->tx_clean_threshold > 5) {
- mv643xx_eth_free_completed_tx_descs(dev);
- mp->tx_clean_threshold = 0;
- }
-#endif
-
- work_done = 0;
- if ((rdl(mp, RX_CURRENT_QUEUE_DESC_PTR_0(port_num)))
- != (u32) mp->rx_used_desc_q)
- work_done = mv643xx_eth_receive_queue(dev, budget);
-
- if (work_done < budget) {
- netif_rx_complete(dev, napi);
- wrl(mp, INTERRUPT_CAUSE_REG(port_num), 0);
- wrl(mp, INTERRUPT_CAUSE_EXTEND_REG(port_num), 0);
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
- }
-
- return work_done;
-}
-#endif
-
-/**
- * has_tiny_unaligned_frags - check if skb has any small, unaligned fragments
- *
- * Hardware can't handle unaligned fragments smaller than 9 bytes.
- * This helper function detects that case.
- */
-
-static inline unsigned int has_tiny_unaligned_frags(struct sk_buff *skb)
-{
- unsigned int frag;
- skb_frag_t *fragp;
-
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- fragp = &skb_shinfo(skb)->frags[frag];
- if (fragp->size <= 8 && fragp->page_offset & 0x7)
- return 1;
- }
- return 0;
-}
-
-/**
- * eth_alloc_tx_desc_index - return the index of the next available tx desc
- */
-static int eth_alloc_tx_desc_index(struct mv643xx_private *mp)
-{
- int tx_desc_curr;
-
- BUG_ON(mp->tx_desc_count >= mp->tx_ring_size);
-
- tx_desc_curr = mp->tx_curr_desc_q;
- mp->tx_curr_desc_q = (tx_desc_curr + 1) % mp->tx_ring_size;
-
- BUG_ON(mp->tx_curr_desc_q == mp->tx_used_desc_q);
+ BUG_ON(txq->tx_curr_desc == txq->tx_used_desc);
return tx_desc_curr;
}
-/**
- * eth_tx_fill_frag_descs - fill tx hw descriptors for an skb's fragments.
- *
- * Ensure the data for each fragment to be transmitted is mapped properly,
- * then fill in descriptors in the tx hw queue.
- */
-static void eth_tx_fill_frag_descs(struct mv643xx_private *mp,
- struct sk_buff *skb)
+static void txq_submit_frag_skb(struct tx_queue *txq, struct sk_buff *skb)
{
+ int nr_frags = skb_shinfo(skb)->nr_frags;
int frag;
- int tx_index;
- struct eth_tx_desc *desc;
-
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
- tx_index = eth_alloc_tx_desc_index(mp);
- desc = &mp->p_tx_desc_area[tx_index];
+ for (frag = 0; frag < nr_frags; frag++) {
+ skb_frag_t *this_frag;
+ int tx_index;
+ struct tx_desc *desc;
+
+ this_frag = &skb_shinfo(skb)->frags[frag];
+ tx_index = txq_alloc_desc_index(txq);
+ desc = &txq->tx_desc_area[tx_index];
- desc->cmd_sts = ETH_BUFFER_OWNED_BY_DMA;
- /* Last Frag enables interrupt and frees the skb */
- if (frag == (skb_shinfo(skb)->nr_frags - 1)) {
- desc->cmd_sts |= ETH_ZERO_PADDING |
- ETH_TX_LAST_DESC |
- ETH_TX_ENABLE_INTERRUPT;
- mp->tx_skb[tx_index] = skb;
- } else
- mp->tx_skb[tx_index] = NULL;
+ /*
+ * The last fragment will generate an interrupt
+ * which will free the skb on TX completion.
+ */
+ if (frag == nr_frags - 1) {
+ desc->cmd_sts = BUFFER_OWNED_BY_DMA |
+ ZERO_PADDING | TX_LAST_DESC |
+ TX_ENABLE_INTERRUPT;
+ txq->tx_skb[tx_index] = skb;
+ } else {
+ desc->cmd_sts = BUFFER_OWNED_BY_DMA;
+ txq->tx_skb[tx_index] = NULL;
+ }
- desc = &mp->p_tx_desc_area[tx_index];
desc->l4i_chk = 0;
desc->byte_cnt = this_frag->size;
desc->buf_ptr = dma_map_page(NULL, this_frag->page,
@@ -1651,37 +704,28 @@
return (__force __be16)sum;
}
-/**
- * eth_tx_submit_descs_for_skb - submit data from an skb to the tx hw
- *
- * Ensure the data for an skb to be transmitted is mapped properly,
- * then fill in descriptors in the tx hw queue and start the hardware.
- */
-static void eth_tx_submit_descs_for_skb(struct mv643xx_private *mp,
- struct sk_buff *skb)
+static void txq_submit_skb(struct tx_queue *txq, struct sk_buff *skb)
{
+ int nr_frags = skb_shinfo(skb)->nr_frags;
int tx_index;
- struct eth_tx_desc *desc;
+ struct tx_desc *desc;
u32 cmd_sts;
int length;
- int nr_frags = skb_shinfo(skb)->nr_frags;
- cmd_sts = ETH_TX_FIRST_DESC | ETH_GEN_CRC | ETH_BUFFER_OWNED_BY_DMA;
+ cmd_sts = TX_FIRST_DESC | GEN_CRC | BUFFER_OWNED_BY_DMA;
- tx_index = eth_alloc_tx_desc_index(mp);
- desc = &mp->p_tx_desc_area[tx_index];
+ tx_index = txq_alloc_desc_index(txq);
+ desc = &txq->tx_desc_area[tx_index];
if (nr_frags) {
- eth_tx_fill_frag_descs(mp, skb);
+ txq_submit_frag_skb(txq, skb);
length = skb_headlen(skb);
- mp->tx_skb[tx_index] = NULL;
+ txq->tx_skb[tx_index] = NULL;
} else {
- cmd_sts |= ETH_ZERO_PADDING |
- ETH_TX_LAST_DESC |
- ETH_TX_ENABLE_INTERRUPT;
+ cmd_sts |= ZERO_PADDING | TX_LAST_DESC | TX_ENABLE_INTERRUPT;
length = skb->len;
- mp->tx_skb[tx_index] = skb;
+ txq->tx_skb[tx_index] = skb;
}
desc->byte_cnt = length;
@@ -1690,13 +734,13 @@
if (skb->ip_summed == CHECKSUM_PARTIAL) {
BUG_ON(skb->protocol != htons(ETH_P_IP));
- cmd_sts |= ETH_GEN_TCP_UDP_CHECKSUM |
- ETH_GEN_IP_V_4_CHECKSUM |
- ip_hdr(skb)->ihl << ETH_TX_IHL_SHIFT;
+ cmd_sts |= GEN_TCP_UDP_CHECKSUM |
+ GEN_IP_V4_CHECKSUM |
+ ip_hdr(skb)->ihl << TX_IHL_SHIFT;
switch (ip_hdr(skb)->protocol) {
case IPPROTO_UDP:
- cmd_sts |= ETH_UDP_FRAME;
+ cmd_sts |= UDP_FRAME;
desc->l4i_chk = ntohs(sum16_as_be(udp_hdr(skb)->check));
break;
case IPPROTO_TCP:
@@ -1707,7 +751,7 @@
}
} else {
/* Errata BTS #50, IHL must be 5 if no HW checksum */
- cmd_sts |= 5 << ETH_TX_IHL_SHIFT;
+ cmd_sts |= 5 << TX_IHL_SHIFT;
desc->l4i_chk = 0;
}
@@ -1717,1649 +761,1818 @@
/* ensure all descriptors are written before poking hardware */
wmb();
- mv643xx_eth_port_enable_tx(mp, ETH_TX_QUEUES_ENABLED);
+ txq_enable(txq);
- mp->tx_desc_count += nr_frags + 1;
+ txq->tx_desc_count += nr_frags + 1;
}
-/**
- * mv643xx_eth_start_xmit - queue an skb to the hardware for transmission
- *
- */
-static int mv643xx_eth_start_xmit(struct sk_buff *skb, struct net_device *dev)
+static int mv643xx_eth_xmit(struct sk_buff *skb, struct net_device *dev)
{
- struct mv643xx_private *mp = netdev_priv(dev);
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
struct net_device_stats *stats = &dev->stats;
+ struct tx_queue *txq;
unsigned long flags;
- BUG_ON(netif_queue_stopped(dev));
-
if (has_tiny_unaligned_frags(skb) && __skb_linearize(skb)) {
stats->tx_dropped++;
- printk(KERN_DEBUG "%s: failed to linearize tiny "
- "unaligned fragment\n", dev->name);
+ dev_printk(KERN_DEBUG, &dev->dev,
+ "failed to linearize skb with tiny "
+ "unaligned fragment\n");
return NETDEV_TX_BUSY;
}
spin_lock_irqsave(&mp->lock, flags);
- if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB) {
- printk(KERN_ERR "%s: transmit with queue full\n", dev->name);
- netif_stop_queue(dev);
+ txq = mp->txq + mp->txq_primary;
+
+ if (txq->tx_ring_size - txq->tx_desc_count < MAX_DESCS_PER_SKB) {
spin_unlock_irqrestore(&mp->lock, flags);
- return NETDEV_TX_BUSY;
+ if (txq->index == mp->txq_primary && net_ratelimit())
+ dev_printk(KERN_ERR, &dev->dev,
+ "primary tx queue full?!\n");
+ kfree_skb(skb);
+ return NETDEV_TX_OK;
}
- eth_tx_submit_descs_for_skb(mp, skb);
+ txq_submit_skb(txq, skb);
stats->tx_bytes += skb->len;
stats->tx_packets++;
dev->trans_start = jiffies;
- if (mp->tx_ring_size - mp->tx_desc_count < MAX_DESCS_PER_SKB)
- netif_stop_queue(dev);
+ if (txq->index == mp->txq_primary) {
+ int entries_left;
+
+ entries_left = txq->tx_ring_size - txq->tx_desc_count;
+ if (entries_left < MAX_DESCS_PER_SKB)
+ netif_stop_queue(dev);
+ }
spin_unlock_irqrestore(&mp->lock, flags);
return NETDEV_TX_OK;
}
-#ifdef CONFIG_NET_POLL_CONTROLLER
-static void mv643xx_netpoll(struct net_device *netdev)
+
+/* tx rate control **********************************************************/
+/*
+ * Set total maximum TX rate (shared by all TX queues for this port)
+ * to 'rate' bits per second, with a maximum burst of 'burst' bytes.
+ */
+static void tx_set_rate(struct mv643xx_eth_private *mp, int rate, int burst)
{
- struct mv643xx_private *mp = netdev_priv(netdev);
- int port_num = mp->port_num;
+ int token_rate;
+ int mtu;
+ int bucket_size;
+
+ token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
+ if (token_rate > 1023)
+ token_rate = 1023;
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_MASK_ALL);
- /* wait for previous write to complete */
- rdl(mp, INTERRUPT_MASK_REG(port_num));
+ mtu = (mp->dev->mtu + 255) >> 8;
+ if (mtu > 63)
+ mtu = 63;
- mv643xx_eth_int_handler(netdev->irq, netdev);
+ bucket_size = (burst + 255) >> 8;
+ if (bucket_size > 65535)
+ bucket_size = 65535;
- wrl(mp, INTERRUPT_MASK_REG(port_num), ETH_INT_UNMASK_ALL);
+ if (mp->shared->tx_bw_control_moved) {
+ wrl(mp, TX_BW_RATE_MOVED(mp->port_num), token_rate);
+ wrl(mp, TX_BW_MTU_MOVED(mp->port_num), mtu);
+ wrl(mp, TX_BW_BURST_MOVED(mp->port_num), bucket_size);
+ } else {
+ wrl(mp, TX_BW_RATE(mp->port_num), token_rate);
+ wrl(mp, TX_BW_MTU(mp->port_num), mtu);
+ wrl(mp, TX_BW_BURST(mp->port_num), bucket_size);
+ }
}
-#endif
-static void mv643xx_init_ethtool_cmd(struct net_device *dev, int phy_address,
- int speed, int duplex,
- struct ethtool_cmd *cmd)
+static void txq_set_rate(struct tx_queue *txq, int rate, int burst)
{
- struct mv643xx_private *mp = netdev_priv(dev);
+ struct mv643xx_eth_private *mp = txq_to_mp(txq);
+ int token_rate;
+ int bucket_size;
- memset(cmd, 0, sizeof(*cmd));
+ token_rate = ((rate / 1000) * 64) / (mp->shared->t_clk / 1000);
+ if (token_rate > 1023)
+ token_rate = 1023;
- cmd->port = PORT_MII;
- cmd->transceiver = XCVR_INTERNAL;
- cmd->phy_address = phy_address;
+ bucket_size = (burst + 255) >> 8;
+ if (bucket_size > 65535)
+ bucket_size = 65535;
- if (speed == 0) {
- cmd->autoneg = AUTONEG_ENABLE;
- /* mii lib checks, but doesn't use speed on AUTONEG_ENABLE */
- cmd->speed = SPEED_100;
- cmd->advertising = ADVERTISED_10baseT_Half |
- ADVERTISED_10baseT_Full |
- ADVERTISED_100baseT_Half |
- ADVERTISED_100baseT_Full;
- if (mp->mii.supports_gmii)
- cmd->advertising |= ADVERTISED_1000baseT_Full;
- } else {
- cmd->autoneg = AUTONEG_DISABLE;
- cmd->speed = speed;
- cmd->duplex = duplex;
- }
+ wrl(mp, TXQ_BW_TOKENS(mp->port_num, txq->index), token_rate << 14);
+ wrl(mp, TXQ_BW_CONF(mp->port_num, txq->index),
+ (bucket_size << 10) | token_rate);
}
-/*/
- * mv643xx_eth_probe
- *
- * First function called after registering the network device.
- * It's purpose is to initialize the device as an ethernet device,
- * fill the ethernet device structure with pointers * to functions,
- * and set the MAC address of the interface
- *
- * Input : struct device *
- * Output : -ENOMEM if failed , 0 if success
- */
-static int mv643xx_eth_probe(struct platform_device *pdev)
+static void txq_set_fixed_prio_mode(struct tx_queue *txq)
{
- struct mv643xx_eth_platform_data *pd;
- int port_num;
- struct mv643xx_private *mp;
- struct net_device *dev;
- u8 *p;
- struct resource *res;
- int err;
- struct ethtool_cmd cmd;
- int duplex = DUPLEX_HALF;
- int speed = 0; /* default to auto-negotiation */
- DECLARE_MAC_BUF(mac);
+ struct mv643xx_eth_private *mp = txq_to_mp(txq);
+ int off;
+ u32 val;
- pd = pdev->dev.platform_data;
- if (pd == NULL) {
- printk(KERN_ERR "No mv643xx_eth_platform_data\n");
- return -ENODEV;
- }
+ /*
+ * Turn on fixed priority mode.
+ */
+ if (mp->shared->tx_bw_control_moved)
+ off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
+ else
+ off = TXQ_FIX_PRIO_CONF(mp->port_num);
- if (pd->shared == NULL) {
- printk(KERN_ERR "No mv643xx_eth_platform_data->shared\n");
- return -ENODEV;
- }
+ val = rdl(mp, off);
+ val |= 1 << txq->index;
+ wrl(mp, off, val);
+}
- dev = alloc_etherdev(sizeof(struct mv643xx_private));
- if (!dev)
- return -ENOMEM;
+static void txq_set_wrr(struct tx_queue *txq, int weight)
+{
+ struct mv643xx_eth_private *mp = txq_to_mp(txq);
+ int off;
+ u32 val;
- platform_set_drvdata(pdev, dev);
+ /*
+ * Turn off fixed priority mode.
+ */
+ if (mp->shared->tx_bw_control_moved)
+ off = TXQ_FIX_PRIO_CONF_MOVED(mp->port_num);
+ else
+ off = TXQ_FIX_PRIO_CONF(mp->port_num);
- mp = netdev_priv(dev);
- mp->dev = dev;
-#ifdef MV643XX_NAPI
- netif_napi_add(dev, &mp->napi, mv643xx_poll, 64);
-#endif
+ val = rdl(mp, off);
+ val &= ~(1 << txq->index);
+ wrl(mp, off, val);
- res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- BUG_ON(!res);
- dev->irq = res->start;
+ /*
+ * Configure WRR weight for this queue.
+ */
+ off = TXQ_BW_WRR_CONF(mp->port_num, txq->index);
- dev->open = mv643xx_eth_open;
- dev->stop = mv643xx_eth_stop;
- dev->hard_start_xmit = mv643xx_eth_start_xmit;
- dev->set_mac_address = mv643xx_eth_set_mac_address;
- dev->set_multicast_list = mv643xx_eth_set_rx_mode;
+ val = rdl(mp, off);
+ val = (val & ~0xff) | (weight & 0xff);
+ wrl(mp, off, val);
+}
- /* No need to Tx Timeout */
- dev->tx_timeout = mv643xx_eth_tx_timeout;
-#ifdef CONFIG_NET_POLL_CONTROLLER
- dev->poll_controller = mv643xx_netpoll;
-#endif
+/* mii management interface *************************************************/
+#define SMI_BUSY 0x10000000
+#define SMI_READ_VALID 0x08000000
+#define SMI_OPCODE_READ 0x04000000
+#define SMI_OPCODE_WRITE 0x00000000
- dev->watchdog_timeo = 2 * HZ;
- dev->base_addr = 0;
- dev->change_mtu = mv643xx_eth_change_mtu;
- dev->do_ioctl = mv643xx_eth_do_ioctl;
- SET_ETHTOOL_OPS(dev, &mv643xx_ethtool_ops);
+static void smi_reg_read(struct mv643xx_eth_private *mp, unsigned int addr,
+ unsigned int reg, unsigned int *value)
+{
+ void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
+ unsigned long flags;
+ int i;
+
+ /* the SMI register is a shared resource */
+ spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
+
+ /* wait for the SMI register to become available */
+ for (i = 0; readl(smi_reg) & SMI_BUSY; i++) {
+ if (i == 1000) {
+ printk("%s: PHY busy timeout\n", mp->dev->name);
+ goto out;
+ }
+ udelay(10);
+ }
+
+ writel(SMI_OPCODE_READ | (reg << 21) | (addr << 16), smi_reg);
+
+ /* now wait for the data to be valid */
+ for (i = 0; !(readl(smi_reg) & SMI_READ_VALID); i++) {
+ if (i == 1000) {
+ printk("%s: PHY read timeout\n", mp->dev->name);
+ goto out;
+ }
+ udelay(10);
+ }
+
+ *value = readl(smi_reg) & 0xffff;
+out:
+ spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
+}
+
+static void smi_reg_write(struct mv643xx_eth_private *mp,
+ unsigned int addr,
+ unsigned int reg, unsigned int value)
+{
+ void __iomem *smi_reg = mp->shared_smi->base + SMI_REG;
+ unsigned long flags;
+ int i;
+
+ /* the SMI register is a shared resource */
+ spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
+
+ /* wait for the SMI register to become available */
+ for (i = 0; readl(smi_reg) & SMI_BUSY; i++) {
+ if (i == 1000) {
+ printk("%s: PHY busy timeout\n", mp->dev->name);
+ goto out;
+ }
+ udelay(10);
+ }
+
+ writel(SMI_OPCODE_WRITE | (reg << 21) |
+ (addr << 16) | (value & 0xffff), smi_reg);
+out:
+ spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
+}
+
+
+/* mib counters *************************************************************/
+static inline u32 mib_read(struct mv643xx_eth_private *mp, int offset)
+{
+ return rdl(mp, MIB_COUNTERS(mp->port_num) + offset);
+}
+
+static void mib_counters_clear(struct mv643xx_eth_private *mp)
+{
+ int i;
+
+ for (i = 0; i < 0x80; i += 4)
+ mib_read(mp, i);
+}
+
+static void mib_counters_update(struct mv643xx_eth_private *mp)
+{
+ struct mib_counters *p = &mp->mib_counters;
+
+ p->good_octets_received += mib_read(mp, 0x00);
+ p->good_octets_received += (u64)mib_read(mp, 0x04) << 32;
+ p->bad_octets_received += mib_read(mp, 0x08);
+ p->internal_mac_transmit_err += mib_read(mp, 0x0c);
+ p->good_frames_received += mib_read(mp, 0x10);
+ p->bad_frames_received += mib_read(mp, 0x14);
+ p->broadcast_frames_received += mib_read(mp, 0x18);
+ p->multicast_frames_received += mib_read(mp, 0x1c);
+ p->frames_64_octets += mib_read(mp, 0x20);
+ p->frames_65_to_127_octets += mib_read(mp, 0x24);
+ p->frames_128_to_255_octets += mib_read(mp, 0x28);
+ p->frames_256_to_511_octets += mib_read(mp, 0x2c);
+ p->frames_512_to_1023_octets += mib_read(mp, 0x30);
+ p->frames_1024_to_max_octets += mib_read(mp, 0x34);
+ p->good_octets_sent += mib_read(mp, 0x38);
+ p->good_octets_sent += (u64)mib_read(mp, 0x3c) << 32;
+ p->good_frames_sent += mib_read(mp, 0x40);
+ p->excessive_collision += mib_read(mp, 0x44);
+ p->multicast_frames_sent += mib_read(mp, 0x48);
+ p->broadcast_frames_sent += mib_read(mp, 0x4c);
+ p->unrec_mac_control_received += mib_read(mp, 0x50);
+ p->fc_sent += mib_read(mp, 0x54);
+ p->good_fc_received += mib_read(mp, 0x58);
+ p->bad_fc_received += mib_read(mp, 0x5c);
+ p->undersize_received += mib_read(mp, 0x60);
+ p->fragments_received += mib_read(mp, 0x64);
+ p->oversize_received += mib_read(mp, 0x68);
+ p->jabber_received += mib_read(mp, 0x6c);
+ p->mac_receive_error += mib_read(mp, 0x70);
+ p->bad_crc_event += mib_read(mp, 0x74);
+ p->collision += mib_read(mp, 0x78);
+ p->late_collision += mib_read(mp, 0x7c);
+}
+
+
+/* ethtool ******************************************************************/
+struct mv643xx_eth_stats {
+ char stat_string[ETH_GSTRING_LEN];
+ int sizeof_stat;
+ int netdev_off;
+ int mp_off;
+};
+
+#define SSTAT(m) \
+ { #m, FIELD_SIZEOF(struct net_device_stats, m), \
+ offsetof(struct net_device, stats.m), -1 }
+
+#define MIBSTAT(m) \
+ { #m, FIELD_SIZEOF(struct mib_counters, m), \
+ -1, offsetof(struct mv643xx_eth_private, mib_counters.m) }
+
+static const struct mv643xx_eth_stats mv643xx_eth_stats[] = {
+ SSTAT(rx_packets),
+ SSTAT(tx_packets),
+ SSTAT(rx_bytes),
+ SSTAT(tx_bytes),
+ SSTAT(rx_errors),
+ SSTAT(tx_errors),
+ SSTAT(rx_dropped),
+ SSTAT(tx_dropped),
+ MIBSTAT(good_octets_received),
+ MIBSTAT(bad_octets_received),
+ MIBSTAT(internal_mac_transmit_err),
+ MIBSTAT(good_frames_received),
+ MIBSTAT(bad_frames_received),
+ MIBSTAT(broadcast_frames_received),
+ MIBSTAT(multicast_frames_received),
+ MIBSTAT(frames_64_octets),
+ MIBSTAT(frames_65_to_127_octets),
+ MIBSTAT(frames_128_to_255_octets),
+ MIBSTAT(frames_256_to_511_octets),
+ MIBSTAT(frames_512_to_1023_octets),
+ MIBSTAT(frames_1024_to_max_octets),
+ MIBSTAT(good_octets_sent),
+ MIBSTAT(good_frames_sent),
+ MIBSTAT(excessive_collision),
+ MIBSTAT(multicast_frames_sent),
+ MIBSTAT(broadcast_frames_sent),
+ MIBSTAT(unrec_mac_control_received),
+ MIBSTAT(fc_sent),
+ MIBSTAT(good_fc_received),
+ MIBSTAT(bad_fc_received),
+ MIBSTAT(undersize_received),
+ MIBSTAT(fragments_received),
+ MIBSTAT(oversize_received),
+ MIBSTAT(jabber_received),
+ MIBSTAT(mac_receive_error),
+ MIBSTAT(bad_crc_event),
+ MIBSTAT(collision),
+ MIBSTAT(late_collision),
+};
+
+static int mv643xx_eth_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+ int err;
+
+ spin_lock_irq(&mp->lock);
+ err = mii_ethtool_gset(&mp->mii, cmd);
+ spin_unlock_irq(&mp->lock);
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
-#ifdef MAX_SKB_FRAGS
/*
- * Zero copy can only work if we use Discovery II memory. Else, we will
- * have to map the buffers to ISA memory which is only 16 MB
+ * The MAC does not support 1000baseT_Half.
*/
- dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
-#endif
-#endif
+ cmd->supported &= ~SUPPORTED_1000baseT_Half;
+ cmd->advertising &= ~ADVERTISED_1000baseT_Half;
- /* Configure the timeout task */
- INIT_WORK(&mp->tx_timeout_task, mv643xx_eth_tx_timeout_task);
+ return err;
+}
- spin_lock_init(&mp->lock);
+static int mv643xx_eth_get_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ cmd->supported = SUPPORTED_MII;
+ cmd->advertising = ADVERTISED_MII;
+ cmd->speed = SPEED_1000;
+ cmd->duplex = DUPLEX_FULL;
+ cmd->port = PORT_MII;
+ cmd->phy_address = 0;
+ cmd->transceiver = XCVR_INTERNAL;
+ cmd->autoneg = AUTONEG_DISABLE;
+ cmd->maxtxpkt = 1;
+ cmd->maxrxpkt = 1;
- mp->shared = platform_get_drvdata(pd->shared);
- port_num = mp->port_num = pd->port_number;
+ return 0;
+}
- if (mp->shared->win_protect)
- wrl(mp, WINDOW_PROTECT(port_num), mp->shared->win_protect);
+static int mv643xx_eth_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+ int err;
- mp->shared_smi = mp->shared;
- if (pd->shared_smi != NULL)
- mp->shared_smi = platform_get_drvdata(pd->shared_smi);
-
- /* set default config values */
- eth_port_uc_addr_get(mp, dev->dev_addr);
- mp->rx_ring_size = PORT_DEFAULT_RECEIVE_QUEUE_SIZE;
- mp->tx_ring_size = PORT_DEFAULT_TRANSMIT_QUEUE_SIZE;
+ /*
+ * The MAC does not support 1000baseT_Half.
+ */
+ cmd->advertising &= ~ADVERTISED_1000baseT_Half;
- if (is_valid_ether_addr(pd->mac_addr))
- memcpy(dev->dev_addr, pd->mac_addr, 6);
+ spin_lock_irq(&mp->lock);
+ err = mii_ethtool_sset(&mp->mii, cmd);
+ spin_unlock_irq(&mp->lock);
- if (pd->phy_addr || pd->force_phy_addr)
- ethernet_phy_set(mp, pd->phy_addr);
+ return err;
+}
- if (pd->rx_queue_size)
- mp->rx_ring_size = pd->rx_queue_size;
+static int mv643xx_eth_set_settings_phyless(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ return -EINVAL;
+}
- if (pd->tx_queue_size)
- mp->tx_ring_size = pd->tx_queue_size;
+static void mv643xx_eth_get_drvinfo(struct net_device *dev,
+ struct ethtool_drvinfo *drvinfo)
+{
+ strncpy(drvinfo->driver, mv643xx_eth_driver_name, 32);
+ strncpy(drvinfo->version, mv643xx_eth_driver_version, 32);
+ strncpy(drvinfo->fw_version, "N/A", 32);
+ strncpy(drvinfo->bus_info, "platform", 32);
+ drvinfo->n_stats = ARRAY_SIZE(mv643xx_eth_stats);
+}
+
+static int mv643xx_eth_nway_reset(struct net_device *dev)
+{
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
- if (pd->tx_sram_size) {
- mp->tx_sram_size = pd->tx_sram_size;
- mp->tx_sram_addr = pd->tx_sram_addr;
+ return mii_nway_restart(&mp->mii);
+}
+
+static int mv643xx_eth_nway_reset_phyless(struct net_device *dev)
+{
+ return -EINVAL;
+}
+
+static u32 mv643xx_eth_get_link(struct net_device *dev)
+{
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+
+ return mii_link_ok(&mp->mii);
+}
+
+static u32 mv643xx_eth_get_link_phyless(struct net_device *dev)
+{
+ return 1;
+}
+
+static void mv643xx_eth_get_strings(struct net_device *dev,
+ uint32_t stringset, uint8_t *data)
+{
+ int i;
+
+ if (stringset == ETH_SS_STATS) {
+ for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
+ memcpy(data + i * ETH_GSTRING_LEN,
+ mv643xx_eth_stats[i].stat_string,
+ ETH_GSTRING_LEN);
+ }
}
+}
+
+static void mv643xx_eth_get_ethtool_stats(struct net_device *dev,
+ struct ethtool_stats *stats,
+ uint64_t *data)
+{
+ struct mv643xx_eth_private *mp = dev->priv;
+ int i;
+
+ mib_counters_update(mp);
+
+ for (i = 0; i < ARRAY_SIZE(mv643xx_eth_stats); i++) {
+ const struct mv643xx_eth_stats *stat;
+ void *p;
+
+ stat = mv643xx_eth_stats + i;
+
+ if (stat->netdev_off >= 0)
+ p = ((void *)mp->dev) + stat->netdev_off;
+ else
+ p = ((void *)mp) + stat->mp_off;
- if (pd->rx_sram_size) {
- mp->rx_sram_size = pd->rx_sram_size;
- mp->rx_sram_addr = pd->rx_sram_addr;
+ data[i] = (stat->sizeof_stat == 8) ?
+ *(uint64_t *)p : *(uint32_t *)p;
}
+}
- duplex = pd->duplex;
- speed = pd->speed;
+static int mv643xx_eth_get_sset_count(struct net_device *dev, int sset)
+{
+ if (sset == ETH_SS_STATS)
+ return ARRAY_SIZE(mv643xx_eth_stats);
- /* Hook up MII support for ethtool */
- mp->mii.dev = dev;
- mp->mii.mdio_read = mv643xx_mdio_read;
- mp->mii.mdio_write = mv643xx_mdio_write;
- mp->mii.phy_id = ethernet_phy_get(mp);
- mp->mii.phy_id_mask = 0x3f;
- mp->mii.reg_num_mask = 0x1f;
+ return -EOPNOTSUPP;
+}
- err = ethernet_phy_detect(mp);
- if (err) {
- pr_debug("%s: No PHY detected at addr %d\n",
- dev->name, ethernet_phy_get(mp));
+static const struct ethtool_ops mv643xx_eth_ethtool_ops = {
+ .get_settings = mv643xx_eth_get_settings,
+ .set_settings = mv643xx_eth_set_settings,
+ .get_drvinfo = mv643xx_eth_get_drvinfo,
+ .nway_reset = mv643xx_eth_nway_reset,
+ .get_link = mv643xx_eth_get_link,
+ .set_sg = ethtool_op_set_sg,
+ .get_strings = mv643xx_eth_get_strings,
+ .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
+ .get_sset_count = mv643xx_eth_get_sset_count,
+};
+
+static const struct ethtool_ops mv643xx_eth_ethtool_ops_phyless = {
+ .get_settings = mv643xx_eth_get_settings_phyless,
+ .set_settings = mv643xx_eth_set_settings_phyless,
+ .get_drvinfo = mv643xx_eth_get_drvinfo,
+ .nway_reset = mv643xx_eth_nway_reset_phyless,
+ .get_link = mv643xx_eth_get_link_phyless,
+ .set_sg = ethtool_op_set_sg,
+ .get_strings = mv643xx_eth_get_strings,
+ .get_ethtool_stats = mv643xx_eth_get_ethtool_stats,
+ .get_sset_count = mv643xx_eth_get_sset_count,
+};
+
+
+/* address handling *********************************************************/
+static void uc_addr_get(struct mv643xx_eth_private *mp, unsigned char *addr)
+{
+ unsigned int mac_h;
+ unsigned int mac_l;
+
+ mac_h = rdl(mp, MAC_ADDR_HIGH(mp->port_num));
+ mac_l = rdl(mp, MAC_ADDR_LOW(mp->port_num));
+
+ addr[0] = (mac_h >> 24) & 0xff;
+ addr[1] = (mac_h >> 16) & 0xff;
+ addr[2] = (mac_h >> 8) & 0xff;
+ addr[3] = mac_h & 0xff;
+ addr[4] = (mac_l >> 8) & 0xff;
+ addr[5] = mac_l & 0xff;
+}
+
+static void init_mac_tables(struct mv643xx_eth_private *mp)
+{
+ int i;
+
+ for (i = 0; i < 0x100; i += 4) {
+ wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
+ wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
+ }
+
+ for (i = 0; i < 0x10; i += 4)
+ wrl(mp, UNICAST_TABLE(mp->port_num) + i, 0);
+}
+
+static void set_filter_table_entry(struct mv643xx_eth_private *mp,
+ int table, unsigned char entry)
+{
+ unsigned int table_reg;
+
+ /* Set "accepts frame bit" at specified table entry */
+ table_reg = rdl(mp, table + (entry & 0xfc));
+ table_reg |= 0x01 << (8 * (entry & 3));
+ wrl(mp, table + (entry & 0xfc), table_reg);
+}
+
+static void uc_addr_set(struct mv643xx_eth_private *mp, unsigned char *addr)
+{
+ unsigned int mac_h;
+ unsigned int mac_l;
+ int table;
+
+ mac_l = (addr[4] << 8) | addr[5];
+ mac_h = (addr[0] << 24) | (addr[1] << 16) | (addr[2] << 8) | addr[3];
+
+ wrl(mp, MAC_ADDR_LOW(mp->port_num), mac_l);
+ wrl(mp, MAC_ADDR_HIGH(mp->port_num), mac_h);
+
+ table = UNICAST_TABLE(mp->port_num);
+ set_filter_table_entry(mp, table, addr[5] & 0x0f);
+}
+
+static int mv643xx_eth_set_mac_address(struct net_device *dev, void *addr)
+{
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+
+ /* +2 is for the offset of the HW addr type */
+ memcpy(dev->dev_addr, addr + 2, 6);
+
+ init_mac_tables(mp);
+ uc_addr_set(mp, dev->dev_addr);
+
+ return 0;
+}
+
+static int addr_crc(unsigned char *addr)
+{
+ int crc = 0;
+ int i;
+
+ for (i = 0; i < 6; i++) {
+ int j;
+
+ crc = (crc ^ addr[i]) << 8;
+ for (j = 7; j >= 0; j--) {
+ if (crc & (0x100 << j))
+ crc ^= 0x107 << j;
+ }
+ }
+
+ return crc;
+}
+
+static void mv643xx_eth_set_rx_mode(struct net_device *dev)
+{
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+ u32 port_config;
+ struct dev_addr_list *addr;
+ int i;
+
+ port_config = rdl(mp, PORT_CONFIG(mp->port_num));
+ if (dev->flags & IFF_PROMISC)
+ port_config |= UNICAST_PROMISCUOUS_MODE;
+ else
+ port_config &= ~UNICAST_PROMISCUOUS_MODE;
+ wrl(mp, PORT_CONFIG(mp->port_num), port_config);
+
+ if (dev->flags & (IFF_PROMISC | IFF_ALLMULTI)) {
+ int port_num = mp->port_num;
+ u32 accept = 0x01010101;
+
+ for (i = 0; i < 0x100; i += 4) {
+ wrl(mp, SPECIAL_MCAST_TABLE(port_num) + i, accept);
+ wrl(mp, OTHER_MCAST_TABLE(port_num) + i, accept);
+ }
+ return;
+ }
+
+ for (i = 0; i < 0x100; i += 4) {
+ wrl(mp, SPECIAL_MCAST_TABLE(mp->port_num) + i, 0);
+ wrl(mp, OTHER_MCAST_TABLE(mp->port_num) + i, 0);
+ }
+
+ for (addr = dev->mc_list; addr != NULL; addr = addr->next) {
+ u8 *a = addr->da_addr;
+ int table;
+
+ if (addr->da_addrlen != 6)
+ continue;
+
+ if (memcmp(a, "\x01\x00\x5e\x00\x00", 5) == 0) {
+ table = SPECIAL_MCAST_TABLE(mp->port_num);
+ set_filter_table_entry(mp, table, a[5]);
+ } else {
+ int crc = addr_crc(a);
+
+ table = OTHER_MCAST_TABLE(mp->port_num);
+ set_filter_table_entry(mp, table, crc);
+ }
+ }
+}
+
+
+/* rx/tx queue initialisation ***********************************************/
+static int rxq_init(struct mv643xx_eth_private *mp, int index)
+{
+ struct rx_queue *rxq = mp->rxq + index;
+ struct rx_desc *rx_desc;
+ int size;
+ int i;
+
+ rxq->index = index;
+
+ rxq->rx_ring_size = mp->default_rx_ring_size;
+
+ rxq->rx_desc_count = 0;
+ rxq->rx_curr_desc = 0;
+ rxq->rx_used_desc = 0;
+
+ size = rxq->rx_ring_size * sizeof(struct rx_desc);
+
+ if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size) {
+ rxq->rx_desc_area = ioremap(mp->rx_desc_sram_addr,
+ mp->rx_desc_sram_size);
+ rxq->rx_desc_dma = mp->rx_desc_sram_addr;
+ } else {
+ rxq->rx_desc_area = dma_alloc_coherent(NULL, size,
+ &rxq->rx_desc_dma,
+ GFP_KERNEL);
+ }
+
+ if (rxq->rx_desc_area == NULL) {
+ dev_printk(KERN_ERR, &mp->dev->dev,
+ "can't allocate rx ring (%d bytes)\n", size);
goto out;
}
+ memset(rxq->rx_desc_area, 0, size);
- ethernet_phy_reset(mp);
- mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
- mv643xx_init_ethtool_cmd(dev, mp->mii.phy_id, speed, duplex, &cmd);
- mv643xx_eth_update_pscr(dev, &cmd);
- mv643xx_set_settings(dev, &cmd);
+ rxq->rx_desc_area_size = size;
+ rxq->rx_skb = kmalloc(rxq->rx_ring_size * sizeof(*rxq->rx_skb),
+ GFP_KERNEL);
+ if (rxq->rx_skb == NULL) {
+ dev_printk(KERN_ERR, &mp->dev->dev,
+ "can't allocate rx skb ring\n");
+ goto out_free;
+ }
- SET_NETDEV_DEV(dev, &pdev->dev);
- err = register_netdev(dev);
- if (err)
+ rx_desc = (struct rx_desc *)rxq->rx_desc_area;
+ for (i = 0; i < rxq->rx_ring_size; i++) {
+ int nexti = (i + 1) % rxq->rx_ring_size;
+ rx_desc[i].next_desc_ptr = rxq->rx_desc_dma +
+ nexti * sizeof(struct rx_desc);
+ }
+
+ init_timer(&rxq->rx_oom);
+ rxq->rx_oom.data = (unsigned long)rxq;
+ rxq->rx_oom.function = rxq_refill_timer_wrapper;
+
+ return 0;
+
+
+out_free:
+ if (index == mp->rxq_primary && size <= mp->rx_desc_sram_size)
+ iounmap(rxq->rx_desc_area);
+ else
+ dma_free_coherent(NULL, size,
+ rxq->rx_desc_area,
+ rxq->rx_desc_dma);
+
+out:
+ return -ENOMEM;
+}
+
+static void rxq_deinit(struct rx_queue *rxq)
+{
+ struct mv643xx_eth_private *mp = rxq_to_mp(rxq);
+ int i;
+
+ rxq_disable(rxq);
+
+ del_timer_sync(&rxq->rx_oom);
+
+ for (i = 0; i < rxq->rx_ring_size; i++) {
+ if (rxq->rx_skb[i]) {
+ dev_kfree_skb(rxq->rx_skb[i]);
+ rxq->rx_desc_count--;
+ }
+ }
+
+ if (rxq->rx_desc_count) {
+ dev_printk(KERN_ERR, &mp->dev->dev,
+ "error freeing rx ring -- %d skbs stuck\n",
+ rxq->rx_desc_count);
+ }
+
+ if (rxq->index == mp->rxq_primary &&
+ rxq->rx_desc_area_size <= mp->rx_desc_sram_size)
+ iounmap(rxq->rx_desc_area);
+ else
+ dma_free_coherent(NULL, rxq->rx_desc_area_size,
+ rxq->rx_desc_area, rxq->rx_desc_dma);
+
+ kfree(rxq->rx_skb);
+}
+
+static int txq_init(struct mv643xx_eth_private *mp, int index)
+{
+ struct tx_queue *txq = mp->txq + index;
+ struct tx_desc *tx_desc;
+ int size;
+ int i;
+
+ txq->index = index;
+
+ txq->tx_ring_size = mp->default_tx_ring_size;
+
+ txq->tx_desc_count = 0;
+ txq->tx_curr_desc = 0;
+ txq->tx_used_desc = 0;
+
+ size = txq->tx_ring_size * sizeof(struct tx_desc);
+
+ if (index == mp->txq_primary && size <= mp->tx_desc_sram_size) {
+ txq->tx_desc_area = ioremap(mp->tx_desc_sram_addr,
+ mp->tx_desc_sram_size);
+ txq->tx_desc_dma = mp->tx_desc_sram_addr;
+ } else {
+ txq->tx_desc_area = dma_alloc_coherent(NULL, size,
+ &txq->tx_desc_dma,
+ GFP_KERNEL);
+ }
+
+ if (txq->tx_desc_area == NULL) {
+ dev_printk(KERN_ERR, &mp->dev->dev,
+ "can't allocate tx ring (%d bytes)\n", size);
goto out;
+ }
+ memset(txq->tx_desc_area, 0, size);
- p = dev->dev_addr;
- printk(KERN_NOTICE
- "%s: port %d with MAC address %s\n",
- dev->name, port_num, print_mac(mac, p));
+ txq->tx_desc_area_size = size;
+ txq->tx_skb = kmalloc(txq->tx_ring_size * sizeof(*txq->tx_skb),
+ GFP_KERNEL);
+ if (txq->tx_skb == NULL) {
+ dev_printk(KERN_ERR, &mp->dev->dev,
+ "can't allocate tx skb ring\n");
+ goto out_free;
+ }
- if (dev->features & NETIF_F_SG)
- printk(KERN_NOTICE "%s: Scatter Gather Enabled\n", dev->name);
+ tx_desc = (struct tx_desc *)txq->tx_desc_area;
+ for (i = 0; i < txq->tx_ring_size; i++) {
+ int nexti = (i + 1) % txq->tx_ring_size;
+ tx_desc[i].next_desc_ptr = txq->tx_desc_dma +
+ nexti * sizeof(struct tx_desc);
+ }
- if (dev->features & NETIF_F_IP_CSUM)
- printk(KERN_NOTICE "%s: TX TCP/IP Checksumming Supported\n",
- dev->name);
+ return 0;
+
+
+out_free:
+ if (index == mp->txq_primary && size <= mp->tx_desc_sram_size)
+ iounmap(txq->tx_desc_area);
+ else
+ dma_free_coherent(NULL, size,
+ txq->tx_desc_area,
+ txq->tx_desc_dma);
+
+out:
+ return -ENOMEM;
+}
+
+static void txq_reclaim(struct tx_queue *txq, int force)
+{
+ struct mv643xx_eth_private *mp = txq_to_mp(txq);
+ unsigned long flags;
+
+ spin_lock_irqsave(&mp->lock, flags);
+ while (txq->tx_desc_count > 0) {
+ int tx_index;
+ struct tx_desc *desc;
+ u32 cmd_sts;
+ struct sk_buff *skb;
+ dma_addr_t addr;
+ int count;
+
+ tx_index = txq->tx_used_desc;
+ desc = &txq->tx_desc_area[tx_index];
+ cmd_sts = desc->cmd_sts;
+
+ if (!force && (cmd_sts & BUFFER_OWNED_BY_DMA))
+ break;
+
+ txq->tx_used_desc = (tx_index + 1) % txq->tx_ring_size;
+ txq->tx_desc_count--;
+
+ addr = desc->buf_ptr;
+ count = desc->byte_cnt;
+ skb = txq->tx_skb[tx_index];
+ txq->tx_skb[tx_index] = NULL;
+
+ if (cmd_sts & ERROR_SUMMARY) {
+ dev_printk(KERN_INFO, &mp->dev->dev, "tx error\n");
+ mp->dev->stats.tx_errors++;
+ }
+
+ /*
+ * Drop mp->lock while we free the skb.
+ */
+ spin_unlock_irqrestore(&mp->lock, flags);
-#ifdef MV643XX_CHECKSUM_OFFLOAD_TX
- printk(KERN_NOTICE "%s: RX TCP/UDP Checksum Offload ON \n", dev->name);
+ if (cmd_sts & TX_FIRST_DESC)
+ dma_unmap_single(NULL, addr, count, DMA_TO_DEVICE);
+ else
+ dma_unmap_page(NULL, addr, count, DMA_TO_DEVICE);
+
+ if (skb)
+ dev_kfree_skb_irq(skb);
+
+ spin_lock_irqsave(&mp->lock, flags);
+ }
+ spin_unlock_irqrestore(&mp->lock, flags);
+}
+
+static void txq_deinit(struct tx_queue *txq)
+{
+ struct mv643xx_eth_private *mp = txq_to_mp(txq);
+
+ txq_disable(txq);
+ txq_reclaim(txq, 1);
+
+ BUG_ON(txq->tx_used_desc != txq->tx_curr_desc);
+
+ if (txq->index == mp->txq_primary &&
+ txq->tx_desc_area_size <= mp->tx_desc_sram_size)
+ iounmap(txq->tx_desc_area);
+ else
+ dma_free_coherent(NULL, txq->tx_desc_area_size,
+ txq->tx_desc_area, txq->tx_desc_dma);
+
+ kfree(txq->tx_skb);
+}
+
+
+/* netdev ops and related ***************************************************/
+static void update_pscr(struct mv643xx_eth_private *mp, int speed, int duplex)
+{
+ u32 pscr_o;
+ u32 pscr_n;
+
+ pscr_o = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
+
+ /* clear speed, duplex and rx buffer size fields */
+ pscr_n = pscr_o & ~(SET_MII_SPEED_TO_100 |
+ SET_GMII_SPEED_TO_1000 |
+ SET_FULL_DUPLEX_MODE |
+ MAX_RX_PACKET_MASK);
+
+ if (speed == SPEED_1000) {
+ pscr_n |= SET_GMII_SPEED_TO_1000 | MAX_RX_PACKET_9700BYTE;
+ } else {
+ if (speed == SPEED_100)
+ pscr_n |= SET_MII_SPEED_TO_100;
+ pscr_n |= MAX_RX_PACKET_1522BYTE;
+ }
+
+ if (duplex == DUPLEX_FULL)
+ pscr_n |= SET_FULL_DUPLEX_MODE;
+
+ if (pscr_n != pscr_o) {
+ if ((pscr_o & SERIAL_PORT_ENABLE) == 0)
+ wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
+ else {
+ int i;
+
+ for (i = 0; i < 8; i++)
+ if (mp->txq_mask & (1 << i))
+ txq_disable(mp->txq + i);
+
+ pscr_o &= ~SERIAL_PORT_ENABLE;
+ wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_o);
+ wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
+ wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr_n);
+
+ for (i = 0; i < 8; i++)
+ if (mp->txq_mask & (1 << i))
+ txq_enable(mp->txq + i);
+ }
+ }
+}
+
+static irqreturn_t mv643xx_eth_irq(int irq, void *dev_id)
+{
+ struct net_device *dev = (struct net_device *)dev_id;
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+ u32 int_cause;
+ u32 int_cause_ext;
+ u32 txq_active;
+
+ int_cause = rdl(mp, INT_CAUSE(mp->port_num)) &
+ (INT_TX_END | INT_RX | INT_EXT);
+ if (int_cause == 0)
+ return IRQ_NONE;
+
+ int_cause_ext = 0;
+ if (int_cause & INT_EXT) {
+ int_cause_ext = rdl(mp, INT_CAUSE_EXT(mp->port_num))
+ & (INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
+ wrl(mp, INT_CAUSE_EXT(mp->port_num), ~int_cause_ext);
+ }
+
+ if (int_cause_ext & (INT_EXT_PHY | INT_EXT_LINK)) {
+ if (mp->phy_addr == -1 || mii_link_ok(&mp->mii)) {
+ int i;
+
+ if (mp->phy_addr != -1) {
+ struct ethtool_cmd cmd;
+
+ mii_ethtool_gset(&mp->mii, &cmd);
+ update_pscr(mp, cmd.speed, cmd.duplex);
+ }
+
+ for (i = 0; i < 8; i++)
+ if (mp->txq_mask & (1 << i))
+ txq_enable(mp->txq + i);
+
+ if (!netif_carrier_ok(dev)) {
+ netif_carrier_on(dev);
+ __txq_maybe_wake(mp->txq + mp->txq_primary);
+ }
+ } else if (netif_carrier_ok(dev)) {
+ netif_stop_queue(dev);
+ netif_carrier_off(dev);
+ }
+ }
+
+ /*
+ * RxBuffer or RxError set for any of the 8 queues?
+ */
+#ifdef MV643XX_ETH_NAPI
+ if (int_cause & INT_RX) {
+ wrl(mp, INT_MASK(mp->port_num), 0x00000000);
+ rdl(mp, INT_MASK(mp->port_num));
+
+ netif_rx_schedule(dev, &mp->napi);
+ }
+#else
+ if (int_cause & INT_RX) {
+ int i;
+
+ for (i = 7; i >= 0; i--)
+ if (mp->rxq_mask & (1 << i))
+ rxq_process(mp->rxq + i, INT_MAX);
+ }
#endif
-#ifdef MV643XX_COAL
- printk(KERN_NOTICE "%s: TX and RX Interrupt Coalescing ON \n",
- dev->name);
-#endif
+ txq_active = rdl(mp, TXQ_COMMAND(mp->port_num));
+
+ /*
+ * TxBuffer or TxError set for any of the 8 queues?
+ */
+ if (int_cause_ext & INT_EXT_TX) {
+ int i;
+
+ for (i = 0; i < 8; i++)
+ if (mp->txq_mask & (1 << i))
+ txq_reclaim(mp->txq + i, 0);
+ }
+
+ /*
+ * Any TxEnd interrupts?
+ */
+ if (int_cause & INT_TX_END) {
+ int i;
+
+ wrl(mp, INT_CAUSE(mp->port_num), ~(int_cause & INT_TX_END));
+ for (i = 0; i < 8; i++) {
+ struct tx_queue *txq = mp->txq + i;
+ if (txq->tx_desc_count && !((txq_active >> i) & 1))
+ txq_enable(txq);
+ }
+ }
+
+ /*
+ * Enough space again in the primary TX queue for a full packet?
+ */
+ if (int_cause_ext & INT_EXT_TX) {
+ struct tx_queue *txq = mp->txq + mp->txq_primary;
+ __txq_maybe_wake(txq);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void phy_reset(struct mv643xx_eth_private *mp)
+{
+ unsigned int data;
+
+ smi_reg_read(mp, mp->phy_addr, 0, &data);
+ data |= 0x8000;
+ smi_reg_write(mp, mp->phy_addr, 0, data);
+
+ do {
+ udelay(1);
+ smi_reg_read(mp, mp->phy_addr, 0, &data);
+ } while (data & 0x8000);
+}
+
+static void port_start(struct mv643xx_eth_private *mp)
+{
+ u32 pscr;
+ int i;
+
+ /*
+ * Configure basic link parameters.
+ */
+ pscr = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
+ pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS);
+ wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
+ pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
+ DISABLE_AUTO_NEG_SPEED_GMII |
+ DISABLE_AUTO_NEG_FOR_DUPLEX |
+ DO_NOT_FORCE_LINK_FAIL |
+ SERIAL_PORT_CONTROL_RESERVED;
+ wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
+ pscr |= SERIAL_PORT_ENABLE;
+ wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), pscr);
+
+ wrl(mp, SDMA_CONFIG(mp->port_num), PORT_SDMA_CONFIG_DEFAULT_VALUE);
+
+ /*
+ * Perform PHY reset, if there is a PHY.
+ */
+ if (mp->phy_addr != -1) {
+ struct ethtool_cmd cmd;
+
+ mv643xx_eth_get_settings(mp->dev, &cmd);
+ phy_reset(mp);
+ mv643xx_eth_set_settings(mp->dev, &cmd);
+ }
+
+ /*
+ * Configure TX path and queues.
+ */
+ tx_set_rate(mp, 1000000000, 16777216);
+ for (i = 0; i < 8; i++) {
+ struct tx_queue *txq = mp->txq + i;
+ int off = TXQ_CURRENT_DESC_PTR(mp->port_num, i);
+ u32 addr;
+
+ if ((mp->txq_mask & (1 << i)) == 0)
+ continue;
+
+ addr = (u32)txq->tx_desc_dma;
+ addr += txq->tx_curr_desc * sizeof(struct tx_desc);
+ wrl(mp, off, addr);
+
+ txq_set_rate(txq, 1000000000, 16777216);
+ txq_set_fixed_prio_mode(txq);
+ }
+
+ /*
+ * Add configured unicast address to address filter table.
+ */
+ uc_addr_set(mp, mp->dev->dev_addr);
+
+ /*
+ * Receive all unmatched unicast, TCP, UDP, BPDU and broadcast
+ * frames to RX queue #0.
+ */
+ wrl(mp, PORT_CONFIG(mp->port_num), 0x00000000);
-#ifdef MV643XX_NAPI
- printk(KERN_NOTICE "%s: RX NAPI Enabled \n", dev->name);
-#endif
+ /*
+ * Treat BPDUs as normal multicasts, and disable partition mode.
+ */
+ wrl(mp, PORT_CONFIG_EXT(mp->port_num), 0x00000000);
- if (mp->tx_sram_size > 0)
- printk(KERN_NOTICE "%s: Using SRAM\n", dev->name);
+ /*
+ * Enable the receive queues.
+ */
+ for (i = 0; i < 8; i++) {
+ struct rx_queue *rxq = mp->rxq + i;
+ int off = RXQ_CURRENT_DESC_PTR(mp->port_num, i);
+ u32 addr;
- return 0;
+ if ((mp->rxq_mask & (1 << i)) == 0)
+ continue;
-out:
- free_netdev(dev);
+ addr = (u32)rxq->rx_desc_dma;
+ addr += rxq->rx_curr_desc * sizeof(struct rx_desc);
+ wrl(mp, off, addr);
- return err;
+ rxq_enable(rxq);
+ }
}
-static int mv643xx_eth_remove(struct platform_device *pdev)
+static void set_rx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
{
- struct net_device *dev = platform_get_drvdata(pdev);
+ unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
+ u32 val;
- unregister_netdev(dev);
- flush_scheduled_work();
+ val = rdl(mp, SDMA_CONFIG(mp->port_num));
+ if (mp->shared->extended_rx_coal_limit) {
+ if (coal > 0xffff)
+ coal = 0xffff;
+ val &= ~0x023fff80;
+ val |= (coal & 0x8000) << 10;
+ val |= (coal & 0x7fff) << 7;
+ } else {
+ if (coal > 0x3fff)
+ coal = 0x3fff;
+ val &= ~0x003fff00;
+ val |= (coal & 0x3fff) << 8;
+ }
+ wrl(mp, SDMA_CONFIG(mp->port_num), val);
+}
- free_netdev(dev);
- platform_set_drvdata(pdev, NULL);
- return 0;
+static void set_tx_coal(struct mv643xx_eth_private *mp, unsigned int delay)
+{
+ unsigned int coal = ((mp->shared->t_clk / 1000000) * delay) / 64;
+
+ if (coal > 0x3fff)
+ coal = 0x3fff;
+ wrl(mp, TX_FIFO_URGENT_THRESHOLD(mp->port_num), (coal & 0x3fff) << 4);
}
-static void mv643xx_eth_conf_mbus_windows(struct mv643xx_shared_private *msp,
- struct mbus_dram_target_info *dram)
+static int mv643xx_eth_open(struct net_device *dev)
{
- void __iomem *base = msp->eth_base;
- u32 win_enable;
- u32 win_protect;
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+ int err;
int i;
- for (i = 0; i < 6; i++) {
- writel(0, base + WINDOW_BASE(i));
- writel(0, base + WINDOW_SIZE(i));
- if (i < 4)
- writel(0, base + WINDOW_REMAP_HIGH(i));
+ wrl(mp, INT_CAUSE(mp->port_num), 0);
+ wrl(mp, INT_CAUSE_EXT(mp->port_num), 0);
+ rdl(mp, INT_CAUSE_EXT(mp->port_num));
+
+ err = request_irq(dev->irq, mv643xx_eth_irq,
+ IRQF_SHARED | IRQF_SAMPLE_RANDOM,
+ dev->name, dev);
+ if (err) {
+ dev_printk(KERN_ERR, &dev->dev, "can't assign irq\n");
+ return -EAGAIN;
}
- win_enable = 0x3f;
- win_protect = 0;
-
- for (i = 0; i < dram->num_cs; i++) {
- struct mbus_dram_window *cs = dram->cs + i;
+ init_mac_tables(mp);
- writel((cs->base & 0xffff0000) |
- (cs->mbus_attr << 8) |
- dram->mbus_dram_target_id, base + WINDOW_BASE(i));
- writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
+ for (i = 0; i < 8; i++) {
+ if ((mp->rxq_mask & (1 << i)) == 0)
+ continue;
+
+ err = rxq_init(mp, i);
+ if (err) {
+ while (--i >= 0)
+ if (mp->rxq_mask & (1 << i))
+ rxq_deinit(mp->rxq + i);
+ goto out;
+ }
- win_enable &= ~(1 << i);
- win_protect |= 3 << (2 * i);
+ rxq_refill(mp->rxq + i);
}
- writel(win_enable, base + WINDOW_BAR_ENABLE);
- msp->win_protect = win_protect;
-}
-
-static int mv643xx_eth_shared_probe(struct platform_device *pdev)
-{
- static int mv643xx_version_printed = 0;
- struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
- struct mv643xx_shared_private *msp;
- struct resource *res;
- int ret;
-
- if (!mv643xx_version_printed++)
- printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
-
- ret = -EINVAL;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL)
- goto out;
+ for (i = 0; i < 8; i++) {
+ if ((mp->txq_mask & (1 << i)) == 0)
+ continue;
+
+ err = txq_init(mp, i);
+ if (err) {
+ while (--i >= 0)
+ if (mp->txq_mask & (1 << i))
+ txq_deinit(mp->txq + i);
+ goto out_free;
+ }
+ }
- ret = -ENOMEM;
- msp = kmalloc(sizeof(*msp), GFP_KERNEL);
- if (msp == NULL)
- goto out;
- memset(msp, 0, sizeof(*msp));
+#ifdef MV643XX_ETH_NAPI
+ napi_enable(&mp->napi);
+#endif
- msp->eth_base = ioremap(res->start, res->end - res->start + 1);
- if (msp->eth_base == NULL)
- goto out_free;
+ port_start(mp);
- spin_lock_init(&msp->phy_lock);
- msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
+ set_rx_coal(mp, 0);
+ set_tx_coal(mp, 0);
- platform_set_drvdata(pdev, msp);
+ wrl(mp, INT_MASK_EXT(mp->port_num),
+ INT_EXT_LINK | INT_EXT_PHY | INT_EXT_TX);
- /*
- * (Re-)program MBUS remapping windows if we are asked to.
- */
- if (pd != NULL && pd->dram != NULL)
- mv643xx_eth_conf_mbus_windows(msp, pd->dram);
+ wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_EXT);
return 0;
+
out_free:
- kfree(msp);
+ for (i = 0; i < 8; i++)
+ if (mp->rxq_mask & (1 << i))
+ rxq_deinit(mp->rxq + i);
out:
- return ret;
+ free_irq(dev->irq, dev);
+
+ return err;
}
-static int mv643xx_eth_shared_remove(struct platform_device *pdev)
+static void port_reset(struct mv643xx_eth_private *mp)
{
- struct mv643xx_shared_private *msp = platform_get_drvdata(pdev);
+ unsigned int data;
+ int i;
- iounmap(msp->eth_base);
- kfree(msp);
+ for (i = 0; i < 8; i++) {
+ if (mp->rxq_mask & (1 << i))
+ rxq_disable(mp->rxq + i);
+ if (mp->txq_mask & (1 << i))
+ txq_disable(mp->txq + i);
+ }
+ while (!(rdl(mp, PORT_STATUS(mp->port_num)) & TX_FIFO_EMPTY))
+ udelay(10);
- return 0;
+ /* Reset the Enable bit in the Configuration Register */
+ data = rdl(mp, PORT_SERIAL_CONTROL(mp->port_num));
+ data &= ~(SERIAL_PORT_ENABLE |
+ DO_NOT_FORCE_LINK_FAIL |
+ FORCE_LINK_PASS);
+ wrl(mp, PORT_SERIAL_CONTROL(mp->port_num), data);
}
-static void mv643xx_eth_shutdown(struct platform_device *pdev)
+static int mv643xx_eth_stop(struct net_device *dev)
{
- struct net_device *dev = platform_get_drvdata(pdev);
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
-
- /* Mask all interrupts on ethernet port */
- wrl(mp, INTERRUPT_MASK_REG(port_num), 0);
- rdl(mp, INTERRUPT_MASK_REG(port_num));
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+ int i;
- eth_port_reset(mp);
-}
+ wrl(mp, INT_MASK(mp->port_num), 0x00000000);
+ rdl(mp, INT_MASK(mp->port_num));
-static struct platform_driver mv643xx_eth_driver = {
- .probe = mv643xx_eth_probe,
- .remove = mv643xx_eth_remove,
- .shutdown = mv643xx_eth_shutdown,
- .driver = {
- .name = MV643XX_ETH_NAME,
- .owner = THIS_MODULE,
- },
-};
+#ifdef MV643XX_ETH_NAPI
+ napi_disable(&mp->napi);
+#endif
+ netif_carrier_off(dev);
+ netif_stop_queue(dev);
-static struct platform_driver mv643xx_eth_shared_driver = {
- .probe = mv643xx_eth_shared_probe,
- .remove = mv643xx_eth_shared_remove,
- .driver = {
- .name = MV643XX_ETH_SHARED_NAME,
- .owner = THIS_MODULE,
- },
-};
+ free_irq(dev->irq, dev);
-/*
- * mv643xx_init_module
- *
- * Registers the network drivers into the Linux kernel
- *
- * Input : N/A
- *
- * Output : N/A
- */
-static int __init mv643xx_init_module(void)
-{
- int rc;
+ port_reset(mp);
+ mib_counters_update(mp);
- rc = platform_driver_register(&mv643xx_eth_shared_driver);
- if (!rc) {
- rc = platform_driver_register(&mv643xx_eth_driver);
- if (rc)
- platform_driver_unregister(&mv643xx_eth_shared_driver);
+ for (i = 0; i < 8; i++) {
+ if (mp->rxq_mask & (1 << i))
+ rxq_deinit(mp->rxq + i);
+ if (mp->txq_mask & (1 << i))
+ txq_deinit(mp->txq + i);
}
- return rc;
-}
-/*
- * mv643xx_cleanup_module
- *
- * Registers the network drivers into the Linux kernel
- *
- * Input : N/A
- *
- * Output : N/A
- */
-static void __exit mv643xx_cleanup_module(void)
-{
- platform_driver_unregister(&mv643xx_eth_driver);
- platform_driver_unregister(&mv643xx_eth_shared_driver);
+ return 0;
}
-module_init(mv643xx_init_module);
-module_exit(mv643xx_cleanup_module);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR( "Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, Manish Lachwani"
- " and Dale Farnsworth");
-MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
-MODULE_ALIAS("platform:" MV643XX_ETH_NAME);
-MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
-
-/*
- * The second part is the low level driver of the gigE ethernet ports.
- */
-
-/*
- * Marvell's Gigabit Ethernet controller low level driver
- *
- * DESCRIPTION:
- * This file introduce low level API to Marvell's Gigabit Ethernet
- * controller. This Gigabit Ethernet Controller driver API controls
- * 1) Operations (i.e. port init, start, reset etc').
- * 2) Data flow (i.e. port send, receive etc').
- * Each Gigabit Ethernet port is controlled via
- * struct mv643xx_private.
- * This struct includes user configuration information as well as
- * driver internal data needed for its operations.
- *
- * Supported Features:
- * - This low level driver is OS independent. Allocating memory for
- * the descriptor rings and buffers are not within the scope of
- * this driver.
- * - The user is free from Rx/Tx queue managing.
- * - This low level driver introduce functionality API that enable
- * the to operate Marvell's Gigabit Ethernet Controller in a
- * convenient way.
- * - Simple Gigabit Ethernet port operation API.
- * - Simple Gigabit Ethernet port data flow API.
- * - Data flow and operation API support per queue functionality.
- * - Support cached descriptors for better performance.
- * - Enable access to all four DRAM banks and internal SRAM memory
- * spaces.
- * - PHY access and control API.
- * - Port control register configuration API.
- * - Full control over Unicast and Multicast MAC configurations.
- *
- * Operation flow:
- *
- * Initialization phase
- * This phase complete the initialization of the the
- * mv643xx_private struct.
- * User information regarding port configuration has to be set
- * prior to calling the port initialization routine.
- *
- * In this phase any port Tx/Rx activity is halted, MIB counters
- * are cleared, PHY address is set according to user parameter and
- * access to DRAM and internal SRAM memory spaces.
- *
- * Driver ring initialization
- * Allocating memory for the descriptor rings and buffers is not
- * within the scope of this driver. Thus, the user is required to
- * allocate memory for the descriptors ring and buffers. Those
- * memory parameters are used by the Rx and Tx ring initialization
- * routines in order to curve the descriptor linked list in a form
- * of a ring.
- * Note: Pay special attention to alignment issues when using
- * cached descriptors/buffers. In this phase the driver store
- * information in the mv643xx_private struct regarding each queue
- * ring.
- *
- * Driver start
- * This phase prepares the Ethernet port for Rx and Tx activity.
- * It uses the information stored in the mv643xx_private struct to
- * initialize the various port registers.
- *
- * Data flow:
- * All packet references to/from the driver are done using
- * struct pkt_info.
- * This struct is a unified struct used with Rx and Tx operations.
- * This way the user is not required to be familiar with neither
- * Tx nor Rx descriptors structures.
- * The driver's descriptors rings are management by indexes.
- * Those indexes controls the ring resources and used to indicate
- * a SW resource error:
- * 'current'
- * This index points to the current available resource for use. For
- * example in Rx process this index will point to the descriptor
- * that will be passed to the user upon calling the receive
- * routine. In Tx process, this index will point to the descriptor
- * that will be assigned with the user packet info and transmitted.
- * 'used'
- * This index points to the descriptor that need to restore its
- * resources. For example in Rx process, using the Rx buffer return
- * API will attach the buffer returned in packet info to the
- * descriptor pointed by 'used'. In Tx process, using the Tx
- * descriptor return will merely return the user packet info with
- * the command status of the transmitted buffer pointed by the
- * 'used' index. Nevertheless, it is essential to use this routine
- * to update the 'used' index.
- * 'first'
- * This index supports Tx Scatter-Gather. It points to the first
- * descriptor of a packet assembled of multiple buffers. For
- * example when in middle of Such packet we have a Tx resource
- * error the 'curr' index get the value of 'first' to indicate
- * that the ring returned to its state before trying to transmit
- * this packet.
- *
- * Receive operation:
- * The eth_port_receive API set the packet information struct,
- * passed by the caller, with received information from the
- * 'current' SDMA descriptor.
- * It is the user responsibility to return this resource back
- * to the Rx descriptor ring to enable the reuse of this source.
- * Return Rx resource is done using the eth_rx_return_buff API.
- *
- * Prior to calling the initialization routine eth_port_init() the user
- * must set the following fields under mv643xx_private struct:
- * port_num User Ethernet port number.
- * port_config User port configuration value.
- * port_config_extend User port config extend value.
- * port_sdma_config User port SDMA config value.
- * port_serial_control User port serial control value.
- *
- * This driver data flow is done using the struct pkt_info which
- * is a unified struct for Rx and Tx operations:
- *
- * byte_cnt Tx/Rx descriptor buffer byte count.
- * l4i_chk CPU provided TCP Checksum. For Tx operation
- * only.
- * cmd_sts Tx/Rx descriptor command status.
- * buf_ptr Tx/Rx descriptor buffer pointer.
- * return_info Tx/Rx user resource return information.
- */
-
-/* Ethernet Port routines */
-static void eth_port_set_filter_table_entry(struct mv643xx_private *mp,
- int table, unsigned char entry);
-
-/*
- * eth_port_init - Initialize the Ethernet port driver
- *
- * DESCRIPTION:
- * This function prepares the ethernet port to start its activity:
- * 1) Completes the ethernet port driver struct initialization toward port
- * start routine.
- * 2) Resets the device to a quiescent state in case of warm reboot.
- * 3) Enable SDMA access to all four DRAM banks as well as internal SRAM.
- * 4) Clean MAC tables. The reset status of those tables is unknown.
- * 5) Set PHY address.
- * Note: Call this routine prior to eth_port_start routine and after
- * setting user values in the user fields of Ethernet port control
- * struct.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet port control struct
- *
- * OUTPUT:
- * See description.
- *
- * RETURN:
- * None.
- */
-static void eth_port_init(struct mv643xx_private *mp)
+static int mv643xx_eth_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
- mp->rx_resource_err = 0;
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
- eth_port_reset(mp);
+ if (mp->phy_addr != -1)
+ return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
- eth_port_init_mac_tables(mp);
+ return -EOPNOTSUPP;
}
-/*
- * eth_port_start - Start the Ethernet port activity.
- *
- * DESCRIPTION:
- * This routine prepares the Ethernet port for Rx and Tx activity:
- * 1. Initialize Tx and Rx Current Descriptor Pointer for each queue that
- * has been initialized a descriptor's ring (using
- * ether_init_tx_desc_ring for Tx and ether_init_rx_desc_ring for Rx)
- * 2. Initialize and enable the Ethernet configuration port by writing to
- * the port's configuration and command registers.
- * 3. Initialize and enable the SDMA by writing to the SDMA's
- * configuration and command registers. After completing these steps,
- * the ethernet port SDMA can starts to perform Rx and Tx activities.
- *
- * Note: Each Rx and Tx queue descriptor's list must be initialized prior
- * to calling this function (use ether_init_tx_desc_ring for Tx queues
- * and ether_init_rx_desc_ring for Rx queues).
- *
- * INPUT:
- * dev - a pointer to the required interface
- *
- * OUTPUT:
- * Ethernet port is ready to receive and transmit.
- *
- * RETURN:
- * None.
- */
-static void eth_port_start(struct net_device *dev)
+static int mv643xx_eth_change_mtu(struct net_device *dev, int new_mtu)
{
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int port_num = mp->port_num;
- int tx_curr_desc, rx_curr_desc;
- u32 pscr;
- struct ethtool_cmd ethtool_cmd;
-
- /* Assignment of Tx CTRP of given queue */
- tx_curr_desc = mp->tx_curr_desc_q;
- wrl(mp, TX_CURRENT_QUEUE_DESC_PTR_0(port_num),
- (u32)((struct eth_tx_desc *)mp->tx_desc_dma + tx_curr_desc));
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
- /* Assignment of Rx CRDP of given queue */
- rx_curr_desc = mp->rx_curr_desc_q;
- wrl(mp, RX_CURRENT_QUEUE_DESC_PTR_0(port_num),
- (u32)((struct eth_rx_desc *)mp->rx_desc_dma + rx_curr_desc));
-
- /* Add the assigned Ethernet address to the port's address table */
- eth_port_uc_addr_set(mp, dev->dev_addr);
+ if (new_mtu < 64 || new_mtu > 9500)
+ return -EINVAL;
- /* Assign port configuration and command. */
- wrl(mp, PORT_CONFIG_REG(port_num),
- PORT_CONFIG_DEFAULT_VALUE);
+ dev->mtu = new_mtu;
+ tx_set_rate(mp, 1000000000, 16777216);
- wrl(mp, PORT_CONFIG_EXTEND_REG(port_num),
- PORT_CONFIG_EXTEND_DEFAULT_VALUE);
+ if (!netif_running(dev))
+ return 0;
- pscr = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num));
+ /*
+ * Stop and then re-open the interface. This will allocate RX
+ * skbs of the new MTU.
+ * There is a possible danger that the open will not succeed,
+ * due to memory being full.
+ */
+ mv643xx_eth_stop(dev);
+ if (mv643xx_eth_open(dev)) {
+ dev_printk(KERN_ERR, &dev->dev,
+ "fatal error on re-opening device after "
+ "MTU change\n");
+ }
- pscr &= ~(SERIAL_PORT_ENABLE | FORCE_LINK_PASS);
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), pscr);
+ return 0;
+}
- pscr |= DISABLE_AUTO_NEG_FOR_FLOW_CTRL |
- DISABLE_AUTO_NEG_SPEED_GMII |
- DISABLE_AUTO_NEG_FOR_DUPLX |
- DO_NOT_FORCE_LINK_FAIL |
- SERIAL_PORT_CONTROL_RESERVED;
+static void tx_timeout_task(struct work_struct *ugly)
+{
+ struct mv643xx_eth_private *mp;
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), pscr);
+ mp = container_of(ugly, struct mv643xx_eth_private, tx_timeout_task);
+ if (netif_running(mp->dev)) {
+ netif_stop_queue(mp->dev);
- pscr |= SERIAL_PORT_ENABLE;
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), pscr);
+ port_reset(mp);
+ port_start(mp);
- /* Assign port SDMA configuration */
- wrl(mp, SDMA_CONFIG_REG(port_num),
- PORT_SDMA_CONFIG_DEFAULT_VALUE);
-
- /* Enable port Rx. */
- mv643xx_eth_port_enable_rx(mp, ETH_RX_QUEUES_ENABLED);
-
- /* Disable port bandwidth limits by clearing MTU register */
- wrl(mp, MAXIMUM_TRANSMIT_UNIT(port_num), 0);
-
- /* save phy settings across reset */
- mv643xx_get_settings(dev, &ethtool_cmd);
- ethernet_phy_reset(mp);
- mv643xx_set_settings(dev, &ethtool_cmd);
+ __txq_maybe_wake(mp->txq + mp->txq_primary);
+ }
}
-/*
- * eth_port_uc_addr_set - Write a MAC address into the port's hw registers
- */
-static void eth_port_uc_addr_set(struct mv643xx_private *mp,
- unsigned char *p_addr)
+static void mv643xx_eth_tx_timeout(struct net_device *dev)
{
- unsigned int port_num = mp->port_num;
- unsigned int mac_h;
- unsigned int mac_l;
- int table;
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
- mac_l = (p_addr[4] << 8) | (p_addr[5]);
- mac_h = (p_addr[0] << 24) | (p_addr[1] << 16) | (p_addr[2] << 8) |
- (p_addr[3] << 0);
-
- wrl(mp, MAC_ADDR_LOW(port_num), mac_l);
- wrl(mp, MAC_ADDR_HIGH(port_num), mac_h);
-
- /* Accept frames with this address */
- table = DA_FILTER_UNICAST_TABLE_BASE(port_num);
- eth_port_set_filter_table_entry(mp, table, p_addr[5] & 0x0f);
+ dev_printk(KERN_INFO, &dev->dev, "tx timeout\n");
+
+ schedule_work(&mp->tx_timeout_task);
}
-/*
- * eth_port_uc_addr_get - Read the MAC address from the port's hw registers
- */
-static void eth_port_uc_addr_get(struct mv643xx_private *mp,
- unsigned char *p_addr)
+#ifdef CONFIG_NET_POLL_CONTROLLER
+static void mv643xx_eth_netpoll(struct net_device *dev)
{
- unsigned int port_num = mp->port_num;
- unsigned int mac_h;
- unsigned int mac_l;
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+
+ wrl(mp, INT_MASK(mp->port_num), 0x00000000);
+ rdl(mp, INT_MASK(mp->port_num));
- mac_h = rdl(mp, MAC_ADDR_HIGH(port_num));
- mac_l = rdl(mp, MAC_ADDR_LOW(port_num));
+ mv643xx_eth_irq(dev->irq, dev);
- p_addr[0] = (mac_h >> 24) & 0xff;
- p_addr[1] = (mac_h >> 16) & 0xff;
- p_addr[2] = (mac_h >> 8) & 0xff;
- p_addr[3] = mac_h & 0xff;
- p_addr[4] = (mac_l >> 8) & 0xff;
- p_addr[5] = mac_l & 0xff;
+ wrl(mp, INT_MASK(mp->port_num), INT_TX_END | INT_RX | INT_CAUSE_EXT);
}
+#endif
-/*
- * The entries in each table are indexed by a hash of a packet's MAC
- * address. One bit in each entry determines whether the packet is
- * accepted. There are 4 entries (each 8 bits wide) in each register
- * of the table. The bits in each entry are defined as follows:
- * 0 Accept=1, Drop=0
- * 3-1 Queue (ETH_Q0=0)
- * 7-4 Reserved = 0;
- */
-static void eth_port_set_filter_table_entry(struct mv643xx_private *mp,
- int table, unsigned char entry)
+static int mv643xx_eth_mdio_read(struct net_device *dev, int addr, int reg)
{
- unsigned int table_reg;
- unsigned int tbl_offset;
- unsigned int reg_offset;
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+ int val;
- tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */
- reg_offset = entry % 4; /* Entry offset within the register */
+ smi_reg_read(mp, addr, reg, &val);
- /* Set "accepts frame bit" at specified table entry */
- table_reg = rdl(mp, table + tbl_offset);
- table_reg |= 0x01 << (8 * reg_offset);
- wrl(mp, table + tbl_offset, table_reg);
+ return val;
}
-/*
- * eth_port_mc_addr - Multicast address settings.
- *
- * The MV device supports multicast using two tables:
- * 1) Special Multicast Table for MAC addresses of the form
- * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_FF).
- * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
- * Table entries in the DA-Filter table.
- * 2) Other Multicast Table for multicast of another type. A CRC-8bit
- * is used as an index to the Other Multicast Table entries in the
- * DA-Filter table. This function calculates the CRC-8bit value.
- * In either case, eth_port_set_filter_table_entry() is then called
- * to set to set the actual table entry.
- */
-static void eth_port_mc_addr(struct mv643xx_private *mp, unsigned char *p_addr)
+static void mv643xx_eth_mdio_write(struct net_device *dev, int addr, int reg, int val)
{
- unsigned int port_num = mp->port_num;
- unsigned int mac_h;
- unsigned int mac_l;
- unsigned char crc_result = 0;
- int table;
- int mac_array[48];
- int crc[8];
- int i;
+ struct mv643xx_eth_private *mp = netdev_priv(dev);
+ smi_reg_write(mp, addr, reg, val);
+}
- if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) &&
- (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) {
- table = DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(port_num);
- eth_port_set_filter_table_entry(mp, table, p_addr[5]);
- return;
- }
- /* Calculate CRC-8 out of the given address */
- mac_h = (p_addr[0] << 8) | (p_addr[1]);
- mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
- (p_addr[4] << 8) | (p_addr[5] << 0);
-
- for (i = 0; i < 32; i++)
- mac_array[i] = (mac_l >> i) & 0x1;
- for (i = 32; i < 48; i++)
- mac_array[i] = (mac_h >> (i - 32)) & 0x1;
-
- crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^
- mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^
- mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^
- mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^
- mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0];
-
- crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
- mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^
- mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^
- mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^
- mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^
- mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^
- mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0];
-
- crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^
- mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^
- mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^
- mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^
- mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^
- mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0];
-
- crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
- mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^
- mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^
- mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^
- mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^
- mac_array[3] ^ mac_array[2] ^ mac_array[1];
-
- crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^
- mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^
- mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^
- mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^
- mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^
- mac_array[3] ^ mac_array[2];
-
- crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^
- mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^
- mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^
- mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^
- mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^
- mac_array[4] ^ mac_array[3];
-
- crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^
- mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^
- mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^
- mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^
- mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^
- mac_array[4];
-
- crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^
- mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^
- mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^
- mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^
- mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5];
+/* platform glue ************************************************************/
+static void
+mv643xx_eth_conf_mbus_windows(struct mv643xx_eth_shared_private *msp,
+ struct mbus_dram_target_info *dram)
+{
+ void __iomem *base = msp->base;
+ u32 win_enable;
+ u32 win_protect;
+ int i;
- for (i = 0; i < 8; i++)
- crc_result = crc_result | (crc[i] << i);
+ for (i = 0; i < 6; i++) {
+ writel(0, base + WINDOW_BASE(i));
+ writel(0, base + WINDOW_SIZE(i));
+ if (i < 4)
+ writel(0, base + WINDOW_REMAP_HIGH(i));
+ }
- table = DA_FILTER_OTHER_MULTICAST_TABLE_BASE(port_num);
- eth_port_set_filter_table_entry(mp, table, crc_result);
-}
+ win_enable = 0x3f;
+ win_protect = 0;
-/*
- * Set the entire multicast list based on dev->mc_list.
- */
-static void eth_port_set_multicast_list(struct net_device *dev)
-{
+ for (i = 0; i < dram->num_cs; i++) {
+ struct mbus_dram_window *cs = dram->cs + i;
- struct dev_mc_list *mc_list;
- int i;
- int table_index;
- struct mv643xx_private *mp = netdev_priv(dev);
- unsigned int eth_port_num = mp->port_num;
-
- /* If the device is in promiscuous mode or in all multicast mode,
- * we will fully populate both multicast tables with accept.
- * This is guaranteed to yield a match on all multicast addresses...
- */
- if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) {
- for (table_index = 0; table_index <= 0xFC; table_index += 4) {
- /* Set all entries in DA filter special multicast
- * table (Ex_dFSMT)
- * Set for ETH_Q0 for now
- * Bits
- * 0 Accept=1, Drop=0
- * 3-1 Queue ETH_Q0=0
- * 7-4 Reserved = 0;
- */
- wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
+ writel((cs->base & 0xffff0000) |
+ (cs->mbus_attr << 8) |
+ dram->mbus_dram_target_id, base + WINDOW_BASE(i));
+ writel((cs->size - 1) & 0xffff0000, base + WINDOW_SIZE(i));
- /* Set all entries in DA filter other multicast
- * table (Ex_dFOMT)
- * Set for ETH_Q0 for now
- * Bits
- * 0 Accept=1, Drop=0
- * 3-1 Queue ETH_Q0=0
- * 7-4 Reserved = 0;
- */
- wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
- }
- return;
+ win_enable &= ~(1 << i);
+ win_protect |= 3 << (2 * i);
}
- /* We will clear out multicast tables every time we get the list.
- * Then add the entire new list...
- */
- for (table_index = 0; table_index <= 0xFC; table_index += 4) {
- /* Clear DA filter special multicast table (Ex_dFSMT) */
- wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index, 0);
-
- /* Clear DA filter other multicast table (Ex_dFOMT) */
- wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index, 0);
- }
-
- /* Get pointer to net_device multicast list and add each one... */
- for (i = 0, mc_list = dev->mc_list;
- (i < 256) && (mc_list != NULL) && (i < dev->mc_count);
- i++, mc_list = mc_list->next)
- if (mc_list->dmi_addrlen == 6)
- eth_port_mc_addr(mp, mc_list->dmi_addr);
+ writel(win_enable, base + WINDOW_BAR_ENABLE);
+ msp->win_protect = win_protect;
}
-/*
- * eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
- *
- * DESCRIPTION:
- * Go through all the DA filter tables (Unicast, Special Multicast &
- * Other Multicast) and set each entry to 0.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * Multicast and Unicast packets are rejected.
- *
- * RETURN:
- * None.
- */
-static void eth_port_init_mac_tables(struct mv643xx_private *mp)
+static void infer_hw_params(struct mv643xx_eth_shared_private *msp)
{
- unsigned int port_num = mp->port_num;
- int table_index;
+ /*
+ * Check whether we have a 14-bit coal limit field in bits
+ * [21:8], or a 16-bit coal limit in bits [25,21:7] of the
+ * SDMA config register.
+ */
+ writel(0x02000000, msp->base + SDMA_CONFIG(0));
+ if (readl(msp->base + SDMA_CONFIG(0)) & 0x02000000)
+ msp->extended_rx_coal_limit = 1;
+ else
+ msp->extended_rx_coal_limit = 0;
- /* Clear DA filter unicast table (Ex_dFUT) */
- for (table_index = 0; table_index <= 0xC; table_index += 4)
- wrl(mp, DA_FILTER_UNICAST_TABLE_BASE(port_num) +
- table_index, 0);
-
- for (table_index = 0; table_index <= 0xFC; table_index += 4) {
- /* Clear DA filter special multicast table (Ex_dFSMT) */
- wrl(mp, DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(port_num) +
- table_index, 0);
- /* Clear DA filter other multicast table (Ex_dFOMT) */
- wrl(mp, DA_FILTER_OTHER_MULTICAST_TABLE_BASE(port_num) +
- table_index, 0);
- }
+ /*
+ * Check whether the TX rate control registers are in the
+ * old or the new place.
+ */
+ writel(1, msp->base + TX_BW_MTU_MOVED(0));
+ if (readl(msp->base + TX_BW_MTU_MOVED(0)) & 1)
+ msp->tx_bw_control_moved = 1;
+ else
+ msp->tx_bw_control_moved = 0;
}
-/*
- * eth_clear_mib_counters - Clear all MIB counters
- *
- * DESCRIPTION:
- * This function clears all MIB counters of a specific ethernet port.
- * A read from the MIB counter will reset the counter.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * After reading all MIB counters, the counters resets.
- *
- * RETURN:
- * MIB counter value.
- *
- */
-static void eth_clear_mib_counters(struct mv643xx_private *mp)
+static int mv643xx_eth_shared_probe(struct platform_device *pdev)
{
- unsigned int port_num = mp->port_num;
- int i;
-
- /* Perform dummy reads from MIB counters */
- for (i = ETH_MIB_GOOD_OCTETS_RECEIVED_LOW; i < ETH_MIB_LATE_COLLISION;
- i += 4)
- rdl(mp, MIB_COUNTERS_BASE(port_num) + i);
-}
+ static int mv643xx_eth_version_printed = 0;
+ struct mv643xx_eth_shared_platform_data *pd = pdev->dev.platform_data;
+ struct mv643xx_eth_shared_private *msp;
+ struct resource *res;
+ int ret;
-static inline u32 read_mib(struct mv643xx_private *mp, int offset)
-{
- return rdl(mp, MIB_COUNTERS_BASE(mp->port_num) + offset);
-}
+ if (!mv643xx_eth_version_printed++)
+ printk(KERN_NOTICE "MV-643xx 10/100/1000 Ethernet Driver\n");
-static void eth_update_mib_counters(struct mv643xx_private *mp)
-{
- struct mv643xx_mib_counters *p = &mp->mib_counters;
- int offset;
+ ret = -EINVAL;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL)
+ goto out;
- p->good_octets_received +=
- read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_LOW);
- p->good_octets_received +=
- (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_RECEIVED_HIGH) << 32;
+ ret = -ENOMEM;
+ msp = kmalloc(sizeof(*msp), GFP_KERNEL);
+ if (msp == NULL)
+ goto out;
+ memset(msp, 0, sizeof(*msp));
- for (offset = ETH_MIB_BAD_OCTETS_RECEIVED;
- offset <= ETH_MIB_FRAMES_1024_TO_MAX_OCTETS;
- offset += 4)
- *(u32 *)((char *)p + offset) += read_mib(mp, offset);
+ msp->base = ioremap(res->start, res->end - res->start + 1);
+ if (msp->base == NULL)
+ goto out_free;
- p->good_octets_sent += read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_LOW);
- p->good_octets_sent +=
- (u64)read_mib(mp, ETH_MIB_GOOD_OCTETS_SENT_HIGH) << 32;
+ spin_lock_init(&msp->phy_lock);
- for (offset = ETH_MIB_GOOD_FRAMES_SENT;
- offset <= ETH_MIB_LATE_COLLISION;
- offset += 4)
- *(u32 *)((char *)p + offset) += read_mib(mp, offset);
-}
+ /*
+ * (Re-)program MBUS remapping windows if we are asked to.
+ */
+ if (pd != NULL && pd->dram != NULL)
+ mv643xx_eth_conf_mbus_windows(msp, pd->dram);
-/*
- * ethernet_phy_detect - Detect whether a phy is present
- *
- * DESCRIPTION:
- * This function tests whether there is a PHY present on
- * the specified port.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * None
- *
- * RETURN:
- * 0 on success
- * -ENODEV on failure
- *
- */
-static int ethernet_phy_detect(struct mv643xx_private *mp)
-{
- unsigned int phy_reg_data0;
- int auto_neg;
+ /*
+ * Detect hardware parameters.
+ */
+ msp->t_clk = (pd != NULL && pd->t_clk != 0) ? pd->t_clk : 133000000;
+ infer_hw_params(msp);
- eth_port_read_smi_reg(mp, 0, &phy_reg_data0);
- auto_neg = phy_reg_data0 & 0x1000;
- phy_reg_data0 ^= 0x1000; /* invert auto_neg */
- eth_port_write_smi_reg(mp, 0, phy_reg_data0);
-
- eth_port_read_smi_reg(mp, 0, &phy_reg_data0);
- if ((phy_reg_data0 & 0x1000) == auto_neg)
- return -ENODEV; /* change didn't take */
+ platform_set_drvdata(pdev, msp);
- phy_reg_data0 ^= 0x1000;
- eth_port_write_smi_reg(mp, 0, phy_reg_data0);
return 0;
+
+out_free:
+ kfree(msp);
+out:
+ return ret;
}
-/*
- * ethernet_phy_get - Get the ethernet port PHY address.
- *
- * DESCRIPTION:
- * This routine returns the given ethernet port PHY address.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * PHY address.
- *
- */
-static int ethernet_phy_get(struct mv643xx_private *mp)
+static int mv643xx_eth_shared_remove(struct platform_device *pdev)
{
- unsigned int reg_data;
+ struct mv643xx_eth_shared_private *msp = platform_get_drvdata(pdev);
- reg_data = rdl(mp, PHY_ADDR_REG);
+ iounmap(msp->base);
+ kfree(msp);
- return ((reg_data >> (5 * mp->port_num)) & 0x1f);
+ return 0;
}
-/*
- * ethernet_phy_set - Set the ethernet port PHY address.
- *
- * DESCRIPTION:
- * This routine sets the given ethernet port PHY address.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- * int phy_addr PHY address.
- *
- * OUTPUT:
- * None.
- *
- * RETURN:
- * None.
- *
- */
-static void ethernet_phy_set(struct mv643xx_private *mp, int phy_addr)
+static struct platform_driver mv643xx_eth_shared_driver = {
+ .probe = mv643xx_eth_shared_probe,
+ .remove = mv643xx_eth_shared_remove,
+ .driver = {
+ .name = MV643XX_ETH_SHARED_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+static void phy_addr_set(struct mv643xx_eth_private *mp, int phy_addr)
{
- u32 reg_data;
int addr_shift = 5 * mp->port_num;
+ u32 data;
- reg_data = rdl(mp, PHY_ADDR_REG);
- reg_data &= ~(0x1f << addr_shift);
- reg_data |= (phy_addr & 0x1f) << addr_shift;
- wrl(mp, PHY_ADDR_REG, reg_data);
+ data = rdl(mp, PHY_ADDR);
+ data &= ~(0x1f << addr_shift);
+ data |= (phy_addr & 0x1f) << addr_shift;
+ wrl(mp, PHY_ADDR, data);
}
-/*
- * ethernet_phy_reset - Reset Ethernet port PHY.
- *
- * DESCRIPTION:
- * This routine utilizes the SMI interface to reset the ethernet port PHY.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * The PHY is reset.
- *
- * RETURN:
- * None.
- *
- */
-static void ethernet_phy_reset(struct mv643xx_private *mp)
+static int phy_addr_get(struct mv643xx_eth_private *mp)
{
- unsigned int phy_reg_data;
+ unsigned int data;
- /* Reset the PHY */
- eth_port_read_smi_reg(mp, 0, &phy_reg_data);
- phy_reg_data |= 0x8000; /* Set bit 15 to reset the PHY */
- eth_port_write_smi_reg(mp, 0, phy_reg_data);
+ data = rdl(mp, PHY_ADDR);
- /* wait for PHY to come out of reset */
- do {
- udelay(1);
- eth_port_read_smi_reg(mp, 0, &phy_reg_data);
- } while (phy_reg_data & 0x8000);
+ return (data >> (5 * mp->port_num)) & 0x1f;
}
-static void mv643xx_eth_port_enable_tx(struct mv643xx_private *mp,
- unsigned int queues)
+static void set_params(struct mv643xx_eth_private *mp,
+ struct mv643xx_eth_platform_data *pd)
{
- wrl(mp, TRANSMIT_QUEUE_COMMAND_REG(mp->port_num), queues);
-}
+ struct net_device *dev = mp->dev;
-static void mv643xx_eth_port_enable_rx(struct mv643xx_private *mp,
- unsigned int queues)
-{
- wrl(mp, RECEIVE_QUEUE_COMMAND_REG(mp->port_num), queues);
-}
+ if (is_valid_ether_addr(pd->mac_addr))
+ memcpy(dev->dev_addr, pd->mac_addr, 6);
+ else
+ uc_addr_get(mp, dev->dev_addr);
-static unsigned int mv643xx_eth_port_disable_tx(struct mv643xx_private *mp)
-{
- unsigned int port_num = mp->port_num;
- u32 queues;
+ if (pd->phy_addr == -1) {
+ mp->shared_smi = NULL;
+ mp->phy_addr = -1;
+ } else {
+ mp->shared_smi = mp->shared;
+ if (pd->shared_smi != NULL)
+ mp->shared_smi = platform_get_drvdata(pd->shared_smi);
+
+ if (pd->force_phy_addr || pd->phy_addr) {
+ mp->phy_addr = pd->phy_addr & 0x3f;
+ phy_addr_set(mp, mp->phy_addr);
+ } else {
+ mp->phy_addr = phy_addr_get(mp);
+ }
+ }
- /* Stop Tx port activity. Check port Tx activity. */
- queues = rdl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num)) & 0xFF;
- if (queues) {
- /* Issue stop command for active queues only */
- wrl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num), (queues << 8));
+ mp->default_rx_ring_size = DEFAULT_RX_QUEUE_SIZE;
+ if (pd->rx_queue_size)
+ mp->default_rx_ring_size = pd->rx_queue_size;
+ mp->rx_desc_sram_addr = pd->rx_sram_addr;
+ mp->rx_desc_sram_size = pd->rx_sram_size;
- /* Wait for all Tx activity to terminate. */
- /* Check port cause register that all Tx queues are stopped */
- while (rdl(mp, TRANSMIT_QUEUE_COMMAND_REG(port_num)) & 0xFF)
- udelay(PHY_WAIT_MICRO_SECONDS);
+ if (pd->rx_queue_mask)
+ mp->rxq_mask = pd->rx_queue_mask;
+ else
+ mp->rxq_mask = 0x01;
+ mp->rxq_primary = fls(mp->rxq_mask) - 1;
- /* Wait for Tx FIFO to empty */
- while (rdl(mp, PORT_STATUS_REG(port_num)) &
- ETH_PORT_TX_FIFO_EMPTY)
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
+ mp->default_tx_ring_size = DEFAULT_TX_QUEUE_SIZE;
+ if (pd->tx_queue_size)
+ mp->default_tx_ring_size = pd->tx_queue_size;
+ mp->tx_desc_sram_addr = pd->tx_sram_addr;
+ mp->tx_desc_sram_size = pd->tx_sram_size;
- return queues;
+ if (pd->tx_queue_mask)
+ mp->txq_mask = pd->tx_queue_mask;
+ else
+ mp->txq_mask = 0x01;
+ mp->txq_primary = fls(mp->txq_mask) - 1;
}
-static unsigned int mv643xx_eth_port_disable_rx(struct mv643xx_private *mp)
+static int phy_detect(struct mv643xx_eth_private *mp)
{
- unsigned int port_num = mp->port_num;
- u32 queues;
+ unsigned int data;
+ unsigned int data2;
- /* Stop Rx port activity. Check port Rx activity. */
- queues = rdl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num)) & 0xFF;
- if (queues) {
- /* Issue stop command for active queues only */
- wrl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num), (queues << 8));
+ smi_reg_read(mp, mp->phy_addr, 0, &data);
+ smi_reg_write(mp, mp->phy_addr, 0, data ^ 0x1000);
- /* Wait for all Rx activity to terminate. */
- /* Check port cause register that all Rx queues are stopped */
- while (rdl(mp, RECEIVE_QUEUE_COMMAND_REG(port_num)) & 0xFF)
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
+ smi_reg_read(mp, mp->phy_addr, 0, &data2);
+ if (((data ^ data2) & 0x1000) == 0)
+ return -ENODEV;
+
+ smi_reg_write(mp, mp->phy_addr, 0, data);
- return queues;
+ return 0;
}
-/*
- * eth_port_reset - Reset Ethernet port
- *
- * DESCRIPTION:
- * This routine resets the chip by aborting any SDMA engine activity and
- * clearing the MIB counters. The Receiver and the Transmit unit are in
- * idle state after this command is performed and the port is disabled.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- *
- * OUTPUT:
- * Channel activity is halted.
- *
- * RETURN:
- * None.
- *
- */
-static void eth_port_reset(struct mv643xx_private *mp)
+static int phy_init(struct mv643xx_eth_private *mp,
+ struct mv643xx_eth_platform_data *pd)
{
- unsigned int port_num = mp->port_num;
- unsigned int reg_data;
-
- mv643xx_eth_port_disable_tx(mp);
- mv643xx_eth_port_disable_rx(mp);
-
- /* Clear all MIB counters */
- eth_clear_mib_counters(mp);
+ struct ethtool_cmd cmd;
+ int err;
- /* Reset the Enable bit in the Configuration Register */
- reg_data = rdl(mp, PORT_SERIAL_CONTROL_REG(port_num));
- reg_data &= ~(SERIAL_PORT_ENABLE |
- DO_NOT_FORCE_LINK_FAIL |
- FORCE_LINK_PASS);
- wrl(mp, PORT_SERIAL_CONTROL_REG(port_num), reg_data);
-}
+ err = phy_detect(mp);
+ if (err) {
+ dev_printk(KERN_INFO, &mp->dev->dev,
+ "no PHY detected at addr %d\n", mp->phy_addr);
+ return err;
+ }
+ phy_reset(mp);
+ mp->mii.phy_id = mp->phy_addr;
+ mp->mii.phy_id_mask = 0x3f;
+ mp->mii.reg_num_mask = 0x1f;
+ mp->mii.dev = mp->dev;
+ mp->mii.mdio_read = mv643xx_eth_mdio_read;
+ mp->mii.mdio_write = mv643xx_eth_mdio_write;
-/*
- * eth_port_read_smi_reg - Read PHY registers
- *
- * DESCRIPTION:
- * This routine utilize the SMI interface to interact with the PHY in
- * order to perform PHY register read.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- * unsigned int phy_reg PHY register address offset.
- * unsigned int *value Register value buffer.
- *
- * OUTPUT:
- * Write the value of a specified PHY register into given buffer.
- *
- * RETURN:
- * false if the PHY is busy or read data is not in valid state.
- * true otherwise.
- *
- */
-static void eth_port_read_smi_reg(struct mv643xx_private *mp,
- unsigned int phy_reg, unsigned int *value)
-{
- void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG;
- int phy_addr = ethernet_phy_get(mp);
- unsigned long flags;
- int i;
+ mp->mii.supports_gmii = mii_check_gmii_support(&mp->mii);
- /* the SMI register is a shared resource */
- spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
+ memset(&cmd, 0, sizeof(cmd));
- /* wait for the SMI register to become available */
- for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("%s: PHY busy timeout\n", mp->dev->name);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
+ cmd.port = PORT_MII;
+ cmd.transceiver = XCVR_INTERNAL;
+ cmd.phy_address = mp->phy_addr;
+ if (pd->speed == 0) {
+ cmd.autoneg = AUTONEG_ENABLE;
+ cmd.speed = SPEED_100;
+ cmd.advertising = ADVERTISED_10baseT_Half |
+ ADVERTISED_10baseT_Full |
+ ADVERTISED_100baseT_Half |
+ ADVERTISED_100baseT_Full;
+ if (mp->mii.supports_gmii)
+ cmd.advertising |= ADVERTISED_1000baseT_Full;
+ } else {
+ cmd.autoneg = AUTONEG_DISABLE;
+ cmd.speed = pd->speed;
+ cmd.duplex = pd->duplex;
}
- writel((phy_addr << 16) | (phy_reg << 21) | ETH_SMI_OPCODE_READ,
- smi_reg);
-
- /* now wait for the data to be valid */
- for (i = 0; !(readl(smi_reg) & ETH_SMI_READ_VALID); i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("%s: PHY read timeout\n", mp->dev->name);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
- }
+ update_pscr(mp, cmd.speed, cmd.duplex);
+ mv643xx_eth_set_settings(mp->dev, &cmd);
- *value = readl(smi_reg) & 0xffff;
-out:
- spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
+ return 0;
}
-/*
- * eth_port_write_smi_reg - Write to PHY registers
- *
- * DESCRIPTION:
- * This routine utilize the SMI interface to interact with the PHY in
- * order to perform writes to PHY registers.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port.
- * unsigned int phy_reg PHY register address offset.
- * unsigned int value Register value.
- *
- * OUTPUT:
- * Write the given value to the specified PHY register.
- *
- * RETURN:
- * false if the PHY is busy.
- * true otherwise.
- *
- */
-static void eth_port_write_smi_reg(struct mv643xx_private *mp,
- unsigned int phy_reg, unsigned int value)
+static int mv643xx_eth_probe(struct platform_device *pdev)
{
- void __iomem *smi_reg = mp->shared_smi->eth_base + SMI_REG;
- int phy_addr = ethernet_phy_get(mp);
- unsigned long flags;
- int i;
+ struct mv643xx_eth_platform_data *pd;
+ struct mv643xx_eth_private *mp;
+ struct net_device *dev;
+ struct resource *res;
+ DECLARE_MAC_BUF(mac);
+ int err;
- /* the SMI register is a shared resource */
- spin_lock_irqsave(&mp->shared_smi->phy_lock, flags);
+ pd = pdev->dev.platform_data;
+ if (pd == NULL) {
+ dev_printk(KERN_ERR, &pdev->dev,
+ "no mv643xx_eth_platform_data\n");
+ return -ENODEV;
+ }
- /* wait for the SMI register to become available */
- for (i = 0; readl(smi_reg) & ETH_SMI_BUSY; i++) {
- if (i == PHY_WAIT_ITERATIONS) {
- printk("%s: PHY busy timeout\n", mp->dev->name);
- goto out;
- }
- udelay(PHY_WAIT_MICRO_SECONDS);
+ if (pd->shared == NULL) {
+ dev_printk(KERN_ERR, &pdev->dev,
+ "no mv643xx_eth_platform_data->shared\n");
+ return -ENODEV;
}
- writel((phy_addr << 16) | (phy_reg << 21) |
- ETH_SMI_OPCODE_WRITE | (value & 0xffff), smi_reg);
-out:
- spin_unlock_irqrestore(&mp->shared_smi->phy_lock, flags);
-}
+ dev = alloc_etherdev(sizeof(struct mv643xx_eth_private));
+ if (!dev)
+ return -ENOMEM;
-/*
- * Wrappers for MII support library.
- */
-static int mv643xx_mdio_read(struct net_device *dev, int phy_id, int location)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- int val;
+ mp = netdev_priv(dev);
+ platform_set_drvdata(pdev, mp);
- eth_port_read_smi_reg(mp, location, &val);
- return val;
-}
+ mp->shared = platform_get_drvdata(pd->shared);
+ mp->port_num = pd->port_number;
-static void mv643xx_mdio_write(struct net_device *dev, int phy_id, int location, int val)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
- eth_port_write_smi_reg(mp, location, val);
-}
+ mp->dev = dev;
+#ifdef MV643XX_ETH_NAPI
+ netif_napi_add(dev, &mp->napi, mv643xx_eth_poll, 64);
+#endif
-/*
- * eth_port_receive - Get received information from Rx ring.
- *
- * DESCRIPTION:
- * This routine returns the received data to the caller. There is no
- * data copying during routine operation. All information is returned
- * using pointer to packet information struct passed from the caller.
- * If the routine exhausts Rx ring resources then the resource error flag
- * is set.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- * struct pkt_info *p_pkt_info User packet buffer.
- *
- * OUTPUT:
- * Rx ring current and used indexes are updated.
- *
- * RETURN:
- * ETH_ERROR in case the routine can not access Rx desc ring.
- * ETH_QUEUE_FULL if Rx ring resources are exhausted.
- * ETH_END_OF_JOB if there is no received data.
- * ETH_OK otherwise.
- */
-static ETH_FUNC_RET_STATUS eth_port_receive(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
-{
- int rx_next_curr_desc, rx_curr_desc, rx_used_desc;
- volatile struct eth_rx_desc *p_rx_desc;
- unsigned int command_status;
- unsigned long flags;
+ set_params(mp, pd);
- /* Do not process Rx ring in case of Rx ring resource error */
- if (mp->rx_resource_err)
- return ETH_QUEUE_FULL;
+ spin_lock_init(&mp->lock);
- spin_lock_irqsave(&mp->lock, flags);
+ mib_counters_clear(mp);
+ INIT_WORK(&mp->tx_timeout_task, tx_timeout_task);
- /* Get the Rx Desc ring 'curr and 'used' indexes */
- rx_curr_desc = mp->rx_curr_desc_q;
- rx_used_desc = mp->rx_used_desc_q;
-
- p_rx_desc = &mp->p_rx_desc_area[rx_curr_desc];
-
- /* The following parameters are used to save readings from memory */
- command_status = p_rx_desc->cmd_sts;
- rmb();
+ if (mp->phy_addr != -1) {
+ err = phy_init(mp, pd);
+ if (err)
+ goto out;
- /* Nothing to receive... */
- if (command_status & (ETH_BUFFER_OWNED_BY_DMA)) {
- spin_unlock_irqrestore(&mp->lock, flags);
- return ETH_END_OF_JOB;
+ SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops);
+ } else {
+ SET_ETHTOOL_OPS(dev, &mv643xx_eth_ethtool_ops_phyless);
}
- p_pkt_info->byte_cnt = (p_rx_desc->byte_cnt) - RX_BUF_OFFSET;
- p_pkt_info->cmd_sts = command_status;
- p_pkt_info->buf_ptr = (p_rx_desc->buf_ptr) + RX_BUF_OFFSET;
- p_pkt_info->return_info = mp->rx_skb[rx_curr_desc];
- p_pkt_info->l4i_chk = p_rx_desc->buf_size;
-
- /*
- * Clean the return info field to indicate that the
- * packet has been moved to the upper layers
- */
- mp->rx_skb[rx_curr_desc] = NULL;
- /* Update current index in data structure */
- rx_next_curr_desc = (rx_curr_desc + 1) % mp->rx_ring_size;
- mp->rx_curr_desc_q = rx_next_curr_desc;
+ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ BUG_ON(!res);
+ dev->irq = res->start;
- /* Rx descriptors exhausted. Set the Rx ring resource error flag */
- if (rx_next_curr_desc == rx_used_desc)
- mp->rx_resource_err = 1;
+ dev->hard_start_xmit = mv643xx_eth_xmit;
+ dev->open = mv643xx_eth_open;
+ dev->stop = mv643xx_eth_stop;
+ dev->set_multicast_list = mv643xx_eth_set_rx_mode;
+ dev->set_mac_address = mv643xx_eth_set_mac_address;
+ dev->do_ioctl = mv643xx_eth_ioctl;
+ dev->change_mtu = mv643xx_eth_change_mtu;
+ dev->tx_timeout = mv643xx_eth_tx_timeout;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+ dev->poll_controller = mv643xx_eth_netpoll;
+#endif
+ dev->watchdog_timeo = 2 * HZ;
+ dev->base_addr = 0;
- spin_unlock_irqrestore(&mp->lock, flags);
+#ifdef MV643XX_ETH_CHECKSUM_OFFLOAD_TX
+ /*
+ * Zero copy can only work if we use Discovery II memory. Else, we will
+ * have to map the buffers to ISA memory which is only 16 MB
+ */
+ dev->features = NETIF_F_SG | NETIF_F_IP_CSUM;
+#endif
- return ETH_OK;
-}
+ SET_NETDEV_DEV(dev, &pdev->dev);
-/*
- * eth_rx_return_buff - Returns a Rx buffer back to the Rx ring.
- *
- * DESCRIPTION:
- * This routine returns a Rx buffer back to the Rx ring. It retrieves the
- * next 'used' descriptor and attached the returned buffer to it.
- * In case the Rx ring was in "resource error" condition, where there are
- * no available Rx resources, the function resets the resource error flag.
- *
- * INPUT:
- * struct mv643xx_private *mp Ethernet Port Control srtuct.
- * struct pkt_info *p_pkt_info Information on returned buffer.
- *
- * OUTPUT:
- * New available Rx resource in Rx descriptor ring.
- *
- * RETURN:
- * ETH_ERROR in case the routine can not access Rx desc ring.
- * ETH_OK otherwise.
- */
-static ETH_FUNC_RET_STATUS eth_rx_return_buff(struct mv643xx_private *mp,
- struct pkt_info *p_pkt_info)
-{
- int used_rx_desc; /* Where to return Rx resource */
- volatile struct eth_rx_desc *p_used_rx_desc;
- unsigned long flags;
+ if (mp->shared->win_protect)
+ wrl(mp, WINDOW_PROTECT(mp->port_num), mp->shared->win_protect);
- spin_lock_irqsave(&mp->lock, flags);
+ err = register_netdev(dev);
+ if (err)
+ goto out;
- /* Get 'used' Rx descriptor */
- used_rx_desc = mp->rx_used_desc_q;
- p_used_rx_desc = &mp->p_rx_desc_area[used_rx_desc];
+ dev_printk(KERN_NOTICE, &dev->dev, "port %d with MAC address %s\n",
+ mp->port_num, print_mac(mac, dev->dev_addr));
- p_used_rx_desc->buf_ptr = p_pkt_info->buf_ptr;
- p_used_rx_desc->buf_size = p_pkt_info->byte_cnt;
- mp->rx_skb[used_rx_desc] = p_pkt_info->return_info;
+ if (dev->features & NETIF_F_SG)
+ dev_printk(KERN_NOTICE, &dev->dev, "scatter/gather enabled\n");
- /* Flush the write pipe */
+ if (dev->features & NETIF_F_IP_CSUM)
+ dev_printk(KERN_NOTICE, &dev->dev, "tx checksum offload\n");
- /* Return the descriptor to DMA ownership */
- wmb();
- p_used_rx_desc->cmd_sts =
- ETH_BUFFER_OWNED_BY_DMA | ETH_RX_ENABLE_INTERRUPT;
- wmb();
+#ifdef MV643XX_ETH_NAPI
+ dev_printk(KERN_NOTICE, &dev->dev, "napi enabled\n");
+#endif
- /* Move the used descriptor pointer to the next descriptor */
- mp->rx_used_desc_q = (used_rx_desc + 1) % mp->rx_ring_size;
+ if (mp->tx_desc_sram_size > 0)
+ dev_printk(KERN_NOTICE, &dev->dev, "configured with sram\n");
- /* Any Rx return cancels the Rx resource error status */
- mp->rx_resource_err = 0;
+ return 0;
- spin_unlock_irqrestore(&mp->lock, flags);
+out:
+ free_netdev(dev);
- return ETH_OK;
+ return err;
}
-/************* Begin ethtool support *************************/
-
-struct mv643xx_stats {
- char stat_string[ETH_GSTRING_LEN];
- int sizeof_stat;
- int stat_offset;
-};
-
-#define MV643XX_STAT(m) FIELD_SIZEOF(struct mv643xx_private, m), \
- offsetof(struct mv643xx_private, m)
-
-static const struct mv643xx_stats mv643xx_gstrings_stats[] = {
- { "rx_packets", MV643XX_STAT(stats.rx_packets) },
- { "tx_packets", MV643XX_STAT(stats.tx_packets) },
- { "rx_bytes", MV643XX_STAT(stats.rx_bytes) },
- { "tx_bytes", MV643XX_STAT(stats.tx_bytes) },
- { "rx_errors", MV643XX_STAT(stats.rx_errors) },
- { "tx_errors", MV643XX_STAT(stats.tx_errors) },
- { "rx_dropped", MV643XX_STAT(stats.rx_dropped) },
- { "tx_dropped", MV643XX_STAT(stats.tx_dropped) },
- { "good_octets_received", MV643XX_STAT(mib_counters.good_octets_received) },
- { "bad_octets_received", MV643XX_STAT(mib_counters.bad_octets_received) },
- { "internal_mac_transmit_err", MV643XX_STAT(mib_counters.internal_mac_transmit_err) },
- { "good_frames_received", MV643XX_STAT(mib_counters.good_frames_received) },
- { "bad_frames_received", MV643XX_STAT(mib_counters.bad_frames_received) },
- { "broadcast_frames_received", MV643XX_STAT(mib_counters.broadcast_frames_received) },
- { "multicast_frames_received", MV643XX_STAT(mib_counters.multicast_frames_received) },
- { "frames_64_octets", MV643XX_STAT(mib_counters.frames_64_octets) },
- { "frames_65_to_127_octets", MV643XX_STAT(mib_counters.frames_65_to_127_octets) },
- { "frames_128_to_255_octets", MV643XX_STAT(mib_counters.frames_128_to_255_octets) },
- { "frames_256_to_511_octets", MV643XX_STAT(mib_counters.frames_256_to_511_octets) },
- { "frames_512_to_1023_octets", MV643XX_STAT(mib_counters.frames_512_to_1023_octets) },
- { "frames_1024_to_max_octets", MV643XX_STAT(mib_counters.frames_1024_to_max_octets) },
- { "good_octets_sent", MV643XX_STAT(mib_counters.good_octets_sent) },
- { "good_frames_sent", MV643XX_STAT(mib_counters.good_frames_sent) },
- { "excessive_collision", MV643XX_STAT(mib_counters.excessive_collision) },
- { "multicast_frames_sent", MV643XX_STAT(mib_counters.multicast_frames_sent) },
- { "broadcast_frames_sent", MV643XX_STAT(mib_counters.broadcast_frames_sent) },
- { "unrec_mac_control_received", MV643XX_STAT(mib_counters.unrec_mac_control_received) },
- { "fc_sent", MV643XX_STAT(mib_counters.fc_sent) },
- { "good_fc_received", MV643XX_STAT(mib_counters.good_fc_received) },
- { "bad_fc_received", MV643XX_STAT(mib_counters.bad_fc_received) },
- { "undersize_received", MV643XX_STAT(mib_counters.undersize_received) },
- { "fragments_received", MV643XX_STAT(mib_counters.fragments_received) },
- { "oversize_received", MV643XX_STAT(mib_counters.oversize_received) },
- { "jabber_received", MV643XX_STAT(mib_counters.jabber_received) },
- { "mac_receive_error", MV643XX_STAT(mib_counters.mac_receive_error) },
- { "bad_crc_event", MV643XX_STAT(mib_counters.bad_crc_event) },
- { "collision", MV643XX_STAT(mib_counters.collision) },
- { "late_collision", MV643XX_STAT(mib_counters.late_collision) },
-};
+static int mv643xx_eth_remove(struct platform_device *pdev)
+{
+ struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
-#define MV643XX_STATS_LEN ARRAY_SIZE(mv643xx_gstrings_stats)
+ unregister_netdev(mp->dev);
+ flush_scheduled_work();
+ free_netdev(mp->dev);
-static void mv643xx_get_drvinfo(struct net_device *netdev,
- struct ethtool_drvinfo *drvinfo)
-{
- strncpy(drvinfo->driver, mv643xx_driver_name, 32);
- strncpy(drvinfo->version, mv643xx_driver_version, 32);
- strncpy(drvinfo->fw_version, "N/A", 32);
- strncpy(drvinfo->bus_info, "mv643xx", 32);
- drvinfo->n_stats = MV643XX_STATS_LEN;
-}
+ platform_set_drvdata(pdev, NULL);
-static int mv643xx_get_sset_count(struct net_device *netdev, int sset)
-{
- switch (sset) {
- case ETH_SS_STATS:
- return MV643XX_STATS_LEN;
- default:
- return -EOPNOTSUPP;
- }
+ return 0;
}
-static void mv643xx_get_ethtool_stats(struct net_device *netdev,
- struct ethtool_stats *stats, uint64_t *data)
+static void mv643xx_eth_shutdown(struct platform_device *pdev)
{
- struct mv643xx_private *mp = netdev->priv;
- int i;
+ struct mv643xx_eth_private *mp = platform_get_drvdata(pdev);
- eth_update_mib_counters(mp);
+ /* Mask all interrupts on ethernet port */
+ wrl(mp, INT_MASK(mp->port_num), 0);
+ rdl(mp, INT_MASK(mp->port_num));
- for (i = 0; i < MV643XX_STATS_LEN; i++) {
- char *p = (char *)mp+mv643xx_gstrings_stats[i].stat_offset;
- data[i] = (mv643xx_gstrings_stats[i].sizeof_stat ==
- sizeof(uint64_t)) ? *(uint64_t *)p : *(uint32_t *)p;
- }
+ if (netif_running(mp->dev))
+ port_reset(mp);
}
-static void mv643xx_get_strings(struct net_device *netdev, uint32_t stringset,
- uint8_t *data)
-{
- int i;
-
- switch(stringset) {
- case ETH_SS_STATS:
- for (i=0; i < MV643XX_STATS_LEN; i++) {
- memcpy(data + i * ETH_GSTRING_LEN,
- mv643xx_gstrings_stats[i].stat_string,
- ETH_GSTRING_LEN);
- }
- break;
- }
-}
+static struct platform_driver mv643xx_eth_driver = {
+ .probe = mv643xx_eth_probe,
+ .remove = mv643xx_eth_remove,
+ .shutdown = mv643xx_eth_shutdown,
+ .driver = {
+ .name = MV643XX_ETH_NAME,
+ .owner = THIS_MODULE,
+ },
+};
-static u32 mv643xx_eth_get_link(struct net_device *dev)
+static int __init mv643xx_eth_init_module(void)
{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- return mii_link_ok(&mp->mii);
-}
+ int rc;
-static int mv643xx_eth_nway_restart(struct net_device *dev)
-{
- struct mv643xx_private *mp = netdev_priv(dev);
+ rc = platform_driver_register(&mv643xx_eth_shared_driver);
+ if (!rc) {
+ rc = platform_driver_register(&mv643xx_eth_driver);
+ if (rc)
+ platform_driver_unregister(&mv643xx_eth_shared_driver);
+ }
- return mii_nway_restart(&mp->mii);
+ return rc;
}
+module_init(mv643xx_eth_init_module);
-static int mv643xx_eth_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+static void __exit mv643xx_eth_cleanup_module(void)
{
- struct mv643xx_private *mp = netdev_priv(dev);
-
- return generic_mii_ioctl(&mp->mii, if_mii(ifr), cmd, NULL);
+ platform_driver_unregister(&mv643xx_eth_driver);
+ platform_driver_unregister(&mv643xx_eth_shared_driver);
}
+module_exit(mv643xx_eth_cleanup_module);
-static const struct ethtool_ops mv643xx_ethtool_ops = {
- .get_settings = mv643xx_get_settings,
- .set_settings = mv643xx_set_settings,
- .get_drvinfo = mv643xx_get_drvinfo,
- .get_link = mv643xx_eth_get_link,
- .set_sg = ethtool_op_set_sg,
- .get_sset_count = mv643xx_get_sset_count,
- .get_ethtool_stats = mv643xx_get_ethtool_stats,
- .get_strings = mv643xx_get_strings,
- .nway_reset = mv643xx_eth_nway_restart,
-};
-
-/************* End ethtool support *************************/
+MODULE_AUTHOR("Rabeeh Khoury, Assaf Hoffman, Matthew Dharm, "
+ "Manish Lachwani, Dale Farnsworth and Lennert Buytenhek");
+MODULE_DESCRIPTION("Ethernet driver for Marvell MV643XX");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" MV643XX_ETH_SHARED_NAME);
+MODULE_ALIAS("platform:" MV643XX_ETH_NAME);
--- a/include/linux/mv643xx_eth.h
+++ b/include/linux/mv643xx_eth.h
@@ -17,30 +17,59 @@
struct mv643xx_eth_shared_platform_data {
struct mbus_dram_target_info *dram;
- unsigned int t_clk;
+ unsigned int t_clk;
};
struct mv643xx_eth_platform_data {
+ /*
+ * Pointer back to our parent instance, and our port number.
+ */
struct platform_device *shared;
- int port_number;
+ int port_number;
+ /*
+ * Whether a PHY is present, and if yes, at which address.
+ */
struct platform_device *shared_smi;
+ int force_phy_addr;
+ int phy_addr;
- u16 force_phy_addr; /* force override if phy_addr == 0 */
- u16 phy_addr;
-
- /* If speed is 0, then speed and duplex are autonegotiated. */
- int speed; /* 0, SPEED_10, SPEED_100, SPEED_1000 */
- int duplex; /* DUPLEX_HALF or DUPLEX_FULL */
-
- /* non-zero values of the following fields override defaults */
- u32 tx_queue_size;
- u32 rx_queue_size;
- u32 tx_sram_addr;
- u32 tx_sram_size;
- u32 rx_sram_addr;
- u32 rx_sram_size;
- u8 mac_addr[6]; /* mac address if non-zero*/
+ /*
+ * Use this MAC address if it is valid, overriding the
+ * address that is already in the hardware.
+ */
+ u8 mac_addr[6];
+
+ /*
+ * If speed is 0, autonegotiation is enabled.
+ * Valid values for speed: 0, SPEED_10, SPEED_100, SPEED_1000.
+ * Valid values for duplex: DUPLEX_HALF, DUPLEX_FULL.
+ */
+ int speed;
+ int duplex;
+
+ /*
+ * Which RX/TX queues to use.
+ */
+ int rx_queue_mask;
+ int tx_queue_mask;
+
+ /*
+ * Override default RX/TX queue sizes if nonzero.
+ */
+ int rx_queue_size;
+ int tx_queue_size;
+
+ /*
+ * Use on-chip SRAM for RX/TX descriptors if size is nonzero
+ * and sufficient to contain all descriptors for the requested
+ * ring sizes.
+ */
+ unsigned long rx_sram_addr;
+ int rx_sram_size;
+ unsigned long tx_sram_addr;
+ int tx_sram_size;
};
-#endif /* __LINUX_MV643XX_ETH_H */
+
+#endif
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2689,12 +2689,10 @@
S: Maintained
MARVELL MV643XX ETHERNET DRIVER
-P: Dale Farnsworth
-M: dale@farnsworth.org
-P: Manish Lachwani
-M: mlachwani@mvista.com
+P: Lennert Buytenhek
+M: buytenh@marvell.com
L: netdev@vger.kernel.org
-S: Odd Fixes for 2.4; Maintained for 2.6.
+S: Supported
MATROX FRAMEBUFFER DRIVER
P: Petr Vandrovec
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