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openwrt-xburst/target/linux/brcm47xx/patches-3.6/700-ssb-gigabit-ethernet-driver.patch
hauke 1d70fe9050 brcm47xx: add support for kernel 3.6 
This is based on the patch by Peter Wagner.


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34252 3c298f89-4303-0410-b956-a3cf2f4a3e73
2012-11-18 21:27:00 +00:00

439 lines
14 KiB
Diff
Raw Blame History

--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -44,6 +44,7 @@
#include <linux/prefetch.h>
#include <linux/dma-mapping.h>
#include <linux/firmware.h>
+#include <linux/ssb/ssb_driver_gige.h>
#if IS_ENABLED(CONFIG_HWMON)
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
@@ -253,6 +254,7 @@ static DEFINE_PCI_DEVICE_TABLE(tg3_pci_t
{PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5705F)},
{PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5721)},
{PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5722)},
+ {PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5750)},
{PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751)},
{PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751M)},
{PCI_DEVICE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5751F)},
@@ -535,7 +537,9 @@ static void _tw32_flush(struct tg3 *tp,
static inline void tw32_mailbox_flush(struct tg3 *tp, u32 off, u32 val)
{
tp->write32_mbox(tp, off, val);
- if (!tg3_flag(tp, MBOX_WRITE_REORDER) && !tg3_flag(tp, ICH_WORKAROUND))
+ if (tg3_flag(tp, FLUSH_POSTED_WRITES) ||
+ (!tg3_flag(tp, MBOX_WRITE_REORDER) &&
+ !tg3_flag(tp, ICH_WORKAROUND)))
tp->read32_mbox(tp, off);
}
@@ -545,7 +549,8 @@ static void tg3_write32_tx_mbox(struct t
writel(val, mbox);
if (tg3_flag(tp, TXD_MBOX_HWBUG))
writel(val, mbox);
- if (tg3_flag(tp, MBOX_WRITE_REORDER))
+ if (tg3_flag(tp, MBOX_WRITE_REORDER) ||
+ tg3_flag(tp, FLUSH_POSTED_WRITES))
readl(mbox);
}
@@ -1052,7 +1057,8 @@ static void tg3_switch_clocks(struct tg3
#define PHY_BUSY_LOOPS 5000
-static int tg3_readphy(struct tg3 *tp, int reg, u32 *val)
+static int __tg3_readphy(struct tg3 *tp, unsigned int phy_addr, int reg,
+ u32 *val)
{
u32 frame_val;
unsigned int loops;
@@ -1068,7 +1074,7 @@ static int tg3_readphy(struct tg3 *tp, i
*val = 0x0;
- frame_val = ((tp->phy_addr << MI_COM_PHY_ADDR_SHIFT) &
+ frame_val = ((phy_addr << MI_COM_PHY_ADDR_SHIFT) &
MI_COM_PHY_ADDR_MASK);
frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
MI_COM_REG_ADDR_MASK);
@@ -1105,7 +1111,13 @@ static int tg3_readphy(struct tg3 *tp, i
return ret;
}
-static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
+static int tg3_readphy(struct tg3 *tp, int reg, u32 *val)
+{
+ return __tg3_readphy(tp, tp->phy_addr, reg, val);
+}
+
+static int __tg3_writephy(struct tg3 *tp, unsigned int phy_addr, int reg,
+ u32 val)
{
u32 frame_val;
unsigned int loops;
@@ -1123,7 +1135,7 @@ static int tg3_writephy(struct tg3 *tp,
tg3_ape_lock(tp, tp->phy_ape_lock);
- frame_val = ((tp->phy_addr << MI_COM_PHY_ADDR_SHIFT) &
+ frame_val = ((phy_addr << MI_COM_PHY_ADDR_SHIFT) &
MI_COM_PHY_ADDR_MASK);
frame_val |= ((reg << MI_COM_REG_ADDR_SHIFT) &
MI_COM_REG_ADDR_MASK);
@@ -1158,6 +1170,11 @@ static int tg3_writephy(struct tg3 *tp,
return ret;
}
+static int tg3_writephy(struct tg3 *tp, int reg, u32 val)
+{
+ return __tg3_writephy(tp, tp->phy_addr, reg, val);
+}
+
static int tg3_phy_cl45_write(struct tg3 *tp, u32 devad, u32 addr, u32 val)
{
int err;
@@ -1730,6 +1747,11 @@ static int tg3_poll_fw(struct tg3 *tp)
int i;
u32 val;
+ if (tg3_flag(tp, IS_SSB_CORE)) {
+ /* We don't use firmware. */
+ return 0;
+ }
+
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5906) {
/* Wait up to 20ms for init done. */
for (i = 0; i < 200; i++) {
@@ -3312,6 +3334,8 @@ static int tg3_nvram_write_block(struct
{
int ret;
+ if (tg3_flag(tp, IS_SSB_CORE))
+ return -ENODEV;
if (tg3_flag(tp, EEPROM_WRITE_PROT)) {
tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl &
~GRC_LCLCTRL_GPIO_OUTPUT1);
@@ -3387,6 +3411,11 @@ static int tg3_halt_cpu(struct tg3 *tp,
tw32_f(offset + CPU_MODE, CPU_MODE_HALT);
udelay(10);
} else {
+ /* There is only an Rx CPU for the 5750 derivative in the
+ * BCM4785. */
+ if (tg3_flag(tp, IS_SSB_CORE))
+ return 0;
+
for (i = 0; i < 10000; i++) {
tw32(offset + CPU_STATE, 0xffffffff);
tw32(offset + CPU_MODE, CPU_MODE_HALT);
@@ -3401,9 +3430,12 @@ static int tg3_halt_cpu(struct tg3 *tp,
return -ENODEV;
}
- /* Clear firmware's nvram arbitration. */
- if (tg3_flag(tp, NVRAM))
- tw32(NVRAM_SWARB, SWARB_REQ_CLR0);
+ if (!tg3_flag(tp, IS_SSB_CORE)) {
+ /* Clear firmware's nvram arbitration. */
+ if (tg3_flag(tp, NVRAM))
+ tw32(NVRAM_SWARB, SWARB_REQ_CLR0);
+ }
+
return 0;
}
@@ -3466,6 +3498,11 @@ static int tg3_load_5701_a0_firmware_fix
const __be32 *fw_data;
int err, i;
+ if (tg3_flag(tp, IS_SSB_CORE)) {
+ /* We don't use firmware. */
+ return 0;
+ }
+
fw_data = (void *)tp->fw->data;
/* Firmware blob starts with version numbers, followed by
@@ -3522,6 +3559,11 @@ static int tg3_load_tso_firmware(struct
unsigned long cpu_base, cpu_scratch_base, cpu_scratch_size;
int err, i;
+ if (tg3_flag(tp, IS_SSB_CORE)) {
+ /* We don't use firmware. */
+ return 0;
+ }
+
if (tg3_flag(tp, HW_TSO_1) ||
tg3_flag(tp, HW_TSO_2) ||
tg3_flag(tp, HW_TSO_3))
@@ -3862,8 +3904,9 @@ static int tg3_power_down_prepare(struct
tg3_frob_aux_power(tp, true);
/* Workaround for unstable PLL clock */
- if ((GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_AX) ||
- (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_BX)) {
+ if ((!tg3_flag(tp, IS_SSB_CORE)) &&
+ ((GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_AX) ||
+ (GET_CHIP_REV(tp->pci_chip_rev_id) == CHIPREV_5750_BX))) {
u32 val = tr32(0x7d00);
val &= ~((1 << 16) | (1 << 4) | (1 << 2) | (1 << 1) | 1);
@@ -4365,6 +4408,14 @@ relink:
if (current_link_up == 0 || (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)) {
tg3_phy_copper_begin(tp);
+ if (tg3_flag(tp, ROBOSWITCH)) {
+ current_link_up = 1;
+ current_speed = SPEED_1000; /* FIXME */
+ current_duplex = DUPLEX_FULL;
+ tp->link_config.active_speed = current_speed;
+ tp->link_config.active_duplex = current_duplex;
+ }
+
tg3_readphy(tp, MII_BMSR, &bmsr);
if ((!tg3_readphy(tp, MII_BMSR, &bmsr) && (bmsr & BMSR_LSTATUS)) ||
(tp->mac_mode & MAC_MODE_PORT_INT_LPBACK))
@@ -4383,6 +4434,26 @@ relink:
else
tp->mac_mode |= MAC_MODE_PORT_MODE_GMII;
+ /* In order for the 5750 core in BCM4785 chip to work properly
+ * in RGMII mode, the Led Control Register must be set up.
+ */
+ if (tg3_flag(tp, RGMII_MODE)) {
+ u32 led_ctrl = tr32(MAC_LED_CTRL);
+ led_ctrl &= ~(LED_CTRL_1000MBPS_ON | LED_CTRL_100MBPS_ON);
+
+ if (tp->link_config.active_speed == SPEED_10)
+ led_ctrl |= LED_CTRL_LNKLED_OVERRIDE;
+ else if (tp->link_config.active_speed == SPEED_100)
+ led_ctrl |= (LED_CTRL_LNKLED_OVERRIDE |
+ LED_CTRL_100MBPS_ON);
+ else if (tp->link_config.active_speed == SPEED_1000)
+ led_ctrl |= (LED_CTRL_LNKLED_OVERRIDE |
+ LED_CTRL_1000MBPS_ON);
+
+ tw32(MAC_LED_CTRL, led_ctrl);
+ udelay(40);
+ }
+
tp->mac_mode &= ~MAC_MODE_HALF_DUPLEX;
if (tp->link_config.active_duplex == DUPLEX_HALF)
tp->mac_mode |= MAC_MODE_HALF_DUPLEX;
@@ -8110,6 +8181,14 @@ static int tg3_chip_reset(struct tg3 *tp
tw32(0x5000, 0x400);
}
+ if (tg3_flag(tp, IS_SSB_CORE)) {
+ /* BCM4785: In order to avoid repercussions from using
+ * potentially defective internal ROM, stop the Rx RISC CPU,
+ * which is not required. */
+ tg3_stop_fw(tp);
+ tg3_halt_cpu(tp, RX_CPU_BASE);
+ }
+
tw32(GRC_MODE, tp->grc_mode);
if (tp->pci_chip_rev_id == CHIPREV_ID_5705_A0) {
@@ -9729,6 +9808,11 @@ static void tg3_timer(unsigned long __op
tg3_flag(tp, 57765_CLASS))
tg3_chk_missed_msi(tp);
+ if (tg3_flag(tp, FLUSH_POSTED_WRITES)) {
+ /* BCM4785: Flush posted writes from GbE to host memory. */
+ tr32(HOSTCC_MODE);
+ }
+
if (!tg3_flag(tp, TAGGED_STATUS)) {
/* All of this garbage is because when using non-tagged
* IRQ status the mailbox/status_block protocol the chip
@@ -11424,6 +11508,11 @@ static int tg3_test_nvram(struct tg3 *tp
if (tg3_flag(tp, NO_NVRAM))
return 0;
+ if (tg3_flag(tp, IS_SSB_CORE)) {
+ /* We don't have NVRAM. */
+ return 0;
+ }
+
if (tg3_nvram_read(tp, 0, &magic) != 0)
return -EIO;
@@ -12392,11 +12481,12 @@ static int tg3_ioctl(struct net_device *
if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)
break; /* We have no PHY */
- if (!netif_running(dev))
+ if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)
return -EAGAIN;
spin_lock_bh(&tp->lock);
- err = tg3_readphy(tp, data->reg_num & 0x1f, &mii_regval);
+ err = __tg3_readphy(tp, data->phy_id & 0x1f,
+ data->reg_num & 0x1f, &mii_regval);
spin_unlock_bh(&tp->lock);
data->val_out = mii_regval;
@@ -12408,11 +12498,12 @@ static int tg3_ioctl(struct net_device *
if (tp->phy_flags & TG3_PHYFLG_PHY_SERDES)
break; /* We have no PHY */
- if (!netif_running(dev))
+ if (tp->phy_flags & TG3_PHYFLG_IS_LOW_POWER)
return -EAGAIN;
spin_lock_bh(&tp->lock);
- err = tg3_writephy(tp, data->reg_num & 0x1f, data->val_in);
+ err = __tg3_writephy(tp, data->phy_id & 0x1f,
+ data->reg_num & 0x1f, data->val_in);
spin_unlock_bh(&tp->lock);
return err;
@@ -13260,6 +13351,13 @@ static void __devinit tg3_get_5720_nvram
/* Chips other than 5700/5701 use the NVRAM for fetching info. */
static void __devinit tg3_nvram_init(struct tg3 *tp)
{
+ if (tg3_flag(tp, IS_SSB_CORE)) {
+ /* No NVRAM and EEPROM on the SSB Broadcom GigE core. */
+ tg3_flag_clear(tp, NVRAM);
+ tg3_flag_clear(tp, NVRAM_BUFFERED);
+ return;
+ }
+
tw32_f(GRC_EEPROM_ADDR,
(EEPROM_ADDR_FSM_RESET |
(EEPROM_DEFAULT_CLOCK_PERIOD <<
@@ -13752,10 +13850,19 @@ static int __devinit tg3_phy_probe(struc
* subsys device table.
*/
p = tg3_lookup_by_subsys(tp);
- if (!p)
+ if (p) {
+ tp->phy_id = p->phy_id;
+ } else if (!tg3_flag(tp, IS_SSB_CORE)) {
+ /* For now we saw the IDs 0xbc050cd0,
+ * 0xbc050f80 and 0xbc050c30 on devices
+ * connected to an BCM4785 and there are
+ * probably more. Just assume that the phy is
+ * supported when it is connected to a SSB core
+ * for now.
+ */
return -ENODEV;
+ }
- tp->phy_id = p->phy_id;
if (!tp->phy_id ||
tp->phy_id == TG3_PHY_ID_BCM8002)
tp->phy_flags |= TG3_PHYFLG_PHY_SERDES;
@@ -14765,6 +14872,11 @@ static int __devinit tg3_get_invariants(
}
}
+ if (tg3_flag(tp, FLUSH_POSTED_WRITES)) {
+ tp->write32_tx_mbox = tg3_write_flush_reg32;
+ tp->write32_rx_mbox = tg3_write_flush_reg32;
+ }
+
/* Get eeprom hw config before calling tg3_set_power_state().
* In particular, the TG3_FLAG_IS_NIC flag must be
* determined before calling tg3_set_power_state() so that
@@ -15174,6 +15286,10 @@ static int __devinit tg3_get_device_addr
}
if (!is_valid_ether_addr(&dev->dev_addr[0])) {
+ if (tg3_flag(tp, IS_SSB_CORE))
+ ssb_gige_get_macaddr(tp->pdev, &dev->dev_addr[0]);
+ }
+ if (!is_valid_ether_addr(&dev->dev_addr[0])) {
#ifdef CONFIG_SPARC
if (!tg3_get_default_macaddr_sparc(tp))
return 0;
@@ -15458,7 +15574,8 @@ static int __devinit tg3_test_dma(struct
if (tg3_flag(tp, 40BIT_DMA_BUG) &&
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5704)
tp->dma_rwctrl |= 0x8000;
- else if (ccval == 0x6 || ccval == 0x7)
+ else if ((ccval == 0x6 || ccval == 0x7) ||
+ tg3_flag(tp, ONE_DMA_AT_ONCE))
tp->dma_rwctrl |= DMA_RWCTRL_ONE_DMA;
if (GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5703)
@@ -15820,6 +15937,17 @@ static int __devinit tg3_init_one(struct
tp->msg_enable = tg3_debug;
else
tp->msg_enable = TG3_DEF_MSG_ENABLE;
+ if (pdev_is_ssb_gige_core(pdev)) {
+ tg3_flag_set(tp, IS_SSB_CORE);
+ if (ssb_gige_must_flush_posted_writes(pdev))
+ tg3_flag_set(tp, FLUSH_POSTED_WRITES);
+ if (ssb_gige_one_dma_at_once(pdev))
+ tg3_flag_set(tp, ONE_DMA_AT_ONCE);
+ if (ssb_gige_have_roboswitch(pdev))
+ tg3_flag_set(tp, ROBOSWITCH);
+ if (ssb_gige_is_rgmii(pdev))
+ tg3_flag_set(tp, RGMII_MODE);
+ }
/* The word/byte swap controls here control register access byte
* swapping. DMA data byte swapping is controlled in the GRC_MODE
--- a/drivers/net/ethernet/broadcom/tg3.h
+++ b/drivers/net/ethernet/broadcom/tg3.h
@@ -2973,6 +2973,11 @@ enum TG3_FLAGS {
TG3_FLAG_57765_PLUS,
TG3_FLAG_57765_CLASS,
TG3_FLAG_5717_PLUS,
+ TG3_FLAG_IS_SSB_CORE,
+ TG3_FLAG_FLUSH_POSTED_WRITES,
+ TG3_FLAG_ROBOSWITCH,
+ TG3_FLAG_ONE_DMA_AT_ONCE,
+ TG3_FLAG_RGMII_MODE,
/* Add new flags before this comment and TG3_FLAG_NUMBER_OF_FLAGS */
TG3_FLAG_NUMBER_OF_FLAGS, /* Last entry in enum TG3_FLAGS */
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2121,6 +2121,7 @@
#define PCI_DEVICE_ID_TIGON3_5754M 0x1672
#define PCI_DEVICE_ID_TIGON3_5755M 0x1673
#define PCI_DEVICE_ID_TIGON3_5756 0x1674
+#define PCI_DEVICE_ID_TIGON3_5750 0x1676
#define PCI_DEVICE_ID_TIGON3_5751 0x1677
#define PCI_DEVICE_ID_TIGON3_5715 0x1678
#define PCI_DEVICE_ID_TIGON3_5715S 0x1679
--- a/include/linux/ssb/ssb_driver_gige.h
+++ b/include/linux/ssb/ssb_driver_gige.h
@@ -97,21 +97,12 @@ static inline bool ssb_gige_must_flush_p
return 0;
}
-#ifdef CONFIG_BCM47XX
-#include <asm/mach-bcm47xx/nvram.h>
-/* Get the device MAC address */
-static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
-{
- char buf[20];
- if (nvram_getenv("et0macaddr", buf, sizeof(buf)) < 0)
- return;
- nvram_parse_macaddr(buf, macaddr);
-}
-#else
static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
{
+ struct ssb_gige *dev = pdev_to_ssb_gige(pdev);
+
+ memcpy(macaddr, dev->dev->bus->sprom.et0mac, 6);
}
-#endif
extern int ssb_gige_pcibios_plat_dev_init(struct ssb_device *sdev,
struct pci_dev *pdev);
@@ -175,6 +166,9 @@ static inline bool ssb_gige_must_flush_p
{
return 0;
}
+static inline void ssb_gige_get_macaddr(struct pci_dev *pdev, u8 *macaddr)
+{
+}
#endif /* CONFIG_SSB_DRIVER_GIGE */
#endif /* LINUX_SSB_DRIVER_GIGE_H_ */
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