openwrt-xburst/target/linux/brcm47xx/patches-3.3/700-ssb-gigabit-ethernet-driver.patch

--- 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>
 
 #include <net/checksum.h>
 #include <net/ip.h>
@@ -249,6 +250,7 @@ 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)},
@@ -530,7 +532,9 @@ 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);
 }
 
@@ -540,7 +544,8 @@ 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);
 }
 
@@ -948,7 +953,8 @@ 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;
@@ -962,7 +968,7 @@ 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);
@@ -997,7 +1003,13 @@ 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;
@@ -1013,7 +1025,7 @@ static int tg3_writephy(struct tg3 *tp,
 		udelay(80);
 	}
 
-	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);
@@ -1046,6 +1058,11 @@ 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;
@@ -1608,6 +1625,11 @@ 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++) {
@@ -3015,6 +3037,11 @@ 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);
@@ -3029,9 +3056,12 @@ 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;
 }
 
@@ -3094,6 +3124,11 @@ 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
@@ -3150,6 +3185,11 @@ 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))
@@ -3496,8 +3536,9 @@ 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);
@@ -4011,6 +4052,14 @@ 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))
@@ -4029,6 +4078,26 @@ 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;
@@ -7833,6 +7902,14 @@ 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) {
@@ -9247,6 +9324,11 @@ 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
@@ -10959,6 +11041,11 @@ 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;
 
@@ -11916,11 +12003,12 @@ 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;
@@ -11932,11 +12020,12 @@ 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;
@@ -12670,6 +12759,13 @@ 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 <<
@@ -12936,6 +13032,9 @@ 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);
@@ -13394,10 +13493,19 @@ 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;
@@ -14382,6 +14490,11 @@ 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
@@ -14798,6 +14911,10 @@ 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;
@@ -15082,7 +15199,8 @@ 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)
@@ -15506,6 +15624,17 @@ 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
@@ -2940,6 +2940,11 @@ 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
@@ -2120,6 +2120,7 @@
 #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_ */