+@@ -338,7 +314,7 @@ int ssb_pcicore_pcibios_map_irq(const st
+ return ssb_mips_irq(extpci_core->dev) + 2;
+ }
+
+-static void ssb_pcicore_init_hostmode(struct ssb_pcicore *pc)
++static void __devinit ssb_pcicore_init_hostmode(struct ssb_pcicore *pc)
+ {
+ u32 val;
+
+@@ -403,7 +379,7 @@ static void ssb_pcicore_init_hostmode(st
+ register_pci_controller(&ssb_pcicore_controller);
+ }
+
+-static int pcicore_is_in_hostmode(struct ssb_pcicore *pc)
++static int __devinit pcicore_is_in_hostmode(struct ssb_pcicore *pc)
+ {
+ struct ssb_bus *bus = pc->dev->bus;
+ u16 chipid_top;
+@@ -432,25 +408,133 @@ static int pcicore_is_in_hostmode(struct
+ }
+ #endif /* CONFIG_SSB_PCICORE_HOSTMODE */
+
++/**************************************************
++ * Workarounds.
++ **************************************************/
++
++static void __devinit ssb_pcicore_fix_sprom_core_index(struct ssb_pcicore *pc)
++{
++ u16 tmp = pcicore_read16(pc, SSB_PCICORE_SPROM(0));
++ if (((tmp & 0xF000) >> 12) != pc->dev->core_index) {
++ tmp &= ~0xF000;
++ tmp |= (pc->dev->core_index << 12);
++ pcicore_write16(pc, SSB_PCICORE_SPROM(0), tmp);
++ }
++}
++
++static u8 ssb_pcicore_polarity_workaround(struct ssb_pcicore *pc)
++{
++ return (ssb_pcie_read(pc, 0x204) & 0x10) ? 0xC0 : 0x80;
++}
++
++static void ssb_pcicore_serdes_workaround(struct ssb_pcicore *pc)
++{
++ const u8 serdes_pll_device = 0x1D;
++ const u8 serdes_rx_device = 0x1F;
++ u16 tmp;
++
++ ssb_pcie_mdio_write(pc, serdes_rx_device, 1 /* Control */,
++ ssb_pcicore_polarity_workaround(pc));
++ tmp = ssb_pcie_mdio_read(pc, serdes_pll_device, 1 /* Control */);
++ if (tmp & 0x4000)
++ ssb_pcie_mdio_write(pc, serdes_pll_device, 1, tmp & ~0x4000);
++}
++
++static void ssb_pcicore_pci_setup_workarounds(struct ssb_pcicore *pc)
++{
++ struct ssb_device *pdev = pc->dev;
++ struct ssb_bus *bus = pdev->bus;
++ u32 tmp;
++
++ tmp = pcicore_read32(pc, SSB_PCICORE_SBTOPCI2);
++ tmp |= SSB_PCICORE_SBTOPCI_PREF;
++ tmp |= SSB_PCICORE_SBTOPCI_BURST;
++ pcicore_write32(pc, SSB_PCICORE_SBTOPCI2, tmp);
++
++ if (pdev->id.revision < 5) {
++ tmp = ssb_read32(pdev, SSB_IMCFGLO);
++ tmp &= ~SSB_IMCFGLO_SERTO;
++ tmp |= 2;
++ tmp &= ~SSB_IMCFGLO_REQTO;
++ tmp |= 3 << SSB_IMCFGLO_REQTO_SHIFT;
++ ssb_write32(pdev, SSB_IMCFGLO, tmp);
++ ssb_commit_settings(bus);
++ } else if (pdev->id.revision >= 11) {
++ tmp = pcicore_read32(pc, SSB_PCICORE_SBTOPCI2);
++ tmp |= SSB_PCICORE_SBTOPCI_MRM;
++ pcicore_write32(pc, SSB_PCICORE_SBTOPCI2, tmp);
++ }
++}
++
++static void ssb_pcicore_pcie_setup_workarounds(struct ssb_pcicore *pc)
++{
++ u32 tmp;
++ u8 rev = pc->dev->id.revision;
++
++ if (rev == 0 || rev == 1) {
++ /* TLP Workaround register. */
++ tmp = ssb_pcie_read(pc, 0x4);
++ tmp |= 0x8;
++ ssb_pcie_write(pc, 0x4, tmp);
++ }
++ if (rev == 1) {
++ /* DLLP Link Control register. */
++ tmp = ssb_pcie_read(pc, 0x100);
++ tmp |= 0x40;
++ ssb_pcie_write(pc, 0x100, tmp);
++ }
++
++ if (rev == 0) {
++ const u8 serdes_rx_device = 0x1F;
++
++ ssb_pcie_mdio_write(pc, serdes_rx_device,
++ 2 /* Timer */, 0x8128);
++ ssb_pcie_mdio_write(pc, serdes_rx_device,
++ 6 /* CDR */, 0x0100);
++ ssb_pcie_mdio_write(pc, serdes_rx_device,
++ 7 /* CDR BW */, 0x1466);
++ } else if (rev == 3 || rev == 4 || rev == 5) {
++ /* TODO: DLLP Power Management Threshold */
++ ssb_pcicore_serdes_workaround(pc);
++ /* TODO: ASPM */
++ } else if (rev == 7) {
++ /* TODO: No PLL down */
++ }
++
++ if (rev >= 6) {
++ /* Miscellaneous Configuration Fixup */
++ tmp = pcicore_read16(pc, SSB_PCICORE_SPROM(5));
++ if (!(tmp & 0x8000))
++ pcicore_write16(pc, SSB_PCICORE_SPROM(5),
++ tmp | 0x8000);
++ }
++}
+
+ /**************************************************
+ * Generic and Clientmode operation code.
+ **************************************************/
+
+-static void ssb_pcicore_init_clientmode(struct ssb_pcicore *pc)
++static void __devinit ssb_pcicore_init_clientmode(struct ssb_pcicore *pc)
+ {
++ ssb_pcicore_fix_sprom_core_index(pc);
++
+ /* Disable PCI interrupts. */
+ ssb_write32(pc->dev, SSB_INTVEC, 0);
++
++ /* Additional PCIe always once-executed workarounds */
++ if (pc->dev->id.coreid == SSB_DEV_PCIE) {
++ ssb_pcicore_serdes_workaround(pc);
++ /* TODO: ASPM */
++ /* TODO: Clock Request Update */
++ }
+ }
+
+-void ssb_pcicore_init(struct ssb_pcicore *pc)
++void __devinit ssb_pcicore_init(struct ssb_pcicore *pc)
+ {
+ struct ssb_device *dev = pc->dev;
+- struct ssb_bus *bus;
+
+ if (!dev)
+ return;
+- bus = dev->bus;
+ if (!ssb_device_is_enabled(dev))
+ ssb_device_enable(dev, 0);
+
+@@ -475,58 +559,104 @@ static void ssb_pcie_write(struct ssb_pc
+ pcicore_write32(pc, 0x134, data);
+ }
+
+-static void ssb_pcie_mdio_write(struct ssb_pcicore *pc, u8 device,
+- u8 address, u16 data)
++static void ssb_pcie_mdio_set_phy(struct ssb_pcicore *pc, u8 phy)
+ {
+ const u16 mdio_control = 0x128;
+ const u16 mdio_data = 0x12C;
+ u32 v;
+ int i;
+
++ v = (1 << 30); /* Start of Transaction */
++ v |= (1 << 28); /* Write Transaction */
++ v |= (1 << 17); /* Turnaround */
++ v |= (0x1F << 18);
++ v |= (phy << 4);
++ pcicore_write32(pc, mdio_data, v);
++
++ udelay(10);
++ for (i = 0; i < 200; i++) {
++ v = pcicore_read32(pc, mdio_control);
++ if (v & 0x100 /* Trans complete */)
++ break;
++ msleep(1);
++ }
++}
++
++static u16 ssb_pcie_mdio_read(struct ssb_pcicore *pc, u8 device, u8 address)
++{
++ const u16 mdio_control = 0x128;
++ const u16 mdio_data = 0x12C;
++ int max_retries = 10;
++ u16 ret = 0;
++ u32 v;
++ int i;
++
+ v = 0x80; /* Enable Preamble Sequence */
+ v |= 0x2; /* MDIO Clock Divisor */
+ pcicore_write32(pc, mdio_control, v);
+
++ if (pc->dev->id.revision >= 10) {
++ max_retries = 200;
++ ssb_pcie_mdio_set_phy(pc, device);
++ }
++
+ v = (1 << 30); /* Start of Transaction */
+- v |= (1 << 28); /* Write Transaction */
++ v |= (1 << 29); /* Read Transaction */
+ v |= (1 << 17); /* Turnaround */
+- v |= (u32)device << 22;
++ if (pc->dev->id.revision < 10)
++ v |= (u32)device << 22;
+ v |= (u32)address << 18;
+- v |= data;
+ pcicore_write32(pc, mdio_data, v);
+ /* Wait for the device to complete the transaction */
+ udelay(10);
+- for (i = 0; i < 10; i++) {
++ for (i = 0; i < max_retries; i++) {
+ v = pcicore_read32(pc, mdio_control);
+- if (v & 0x100 /* Trans complete */)
++ if (v & 0x100 /* Trans complete */) {
++ udelay(10);
++ ret = pcicore_read32(pc, mdio_data);
+ break;
++ }
+ msleep(1);
+ }
+ pcicore_write32(pc, mdio_control, 0);
++ return ret;
+ }
+
+-static void ssb_broadcast_value(struct ssb_device *dev,
+- u32 address, u32 data)
++static void ssb_pcie_mdio_write(struct ssb_pcicore *pc, u8 device,
++ u8 address, u16 data)
+ {
+- /* This is used for both, PCI and ChipCommon core, so be careful. */
+- BUILD_BUG_ON(SSB_PCICORE_BCAST_ADDR != SSB_CHIPCO_BCAST_ADDR);
+- BUILD_BUG_ON(SSB_PCICORE_BCAST_DATA != SSB_CHIPCO_BCAST_DATA);
++ const u16 mdio_control = 0x128;
++ const u16 mdio_data = 0x12C;
++ int max_retries = 10;
++ u32 v;
++ int i;
+
+- ssb_write32(dev, SSB_PCICORE_BCAST_ADDR, address);
+- ssb_read32(dev, SSB_PCICORE_BCAST_ADDR); /* flush */
+- ssb_write32(dev, SSB_PCICORE_BCAST_DATA, data);
+- ssb_read32(dev, SSB_PCICORE_BCAST_DATA); /* flush */
+-}
++ v = 0x80; /* Enable Preamble Sequence */
++ v |= 0x2; /* MDIO Clock Divisor */
++ pcicore_write32(pc, mdio_control, v);
+
+-static void ssb_commit_settings(struct ssb_bus *bus)
+-{
+- struct ssb_device *dev;
++ if (pc->dev->id.revision >= 10) {
++ max_retries = 200;
++ ssb_pcie_mdio_set_phy(pc, device);
++ }
+
+- dev = bus->chipco.dev ? bus->chipco.dev : bus->pcicore.dev;
+- if (WARN_ON(!dev))
+- return;
+- /* This forces an update of the cached registers. */
+- ssb_broadcast_value(dev, 0xFD8, 0);
++ v = (1 << 30); /* Start of Transaction */
++ v |= (1 << 28); /* Write Transaction */
++ v |= (1 << 17); /* Turnaround */
++ if (pc->dev->id.revision < 10)
++ v |= (u32)device << 22;
++ v |= (u32)address << 18;
++ v |= data;
++ pcicore_write32(pc, mdio_data, v);
++ /* Wait for the device to complete the transaction */
++ udelay(10);
++ for (i = 0; i < max_retries; i++) {
++ v = pcicore_read32(pc, mdio_control);
++ if (v & 0x100 /* Trans complete */)
++ break;
++ msleep(1);
++ }
++ pcicore_write32(pc, mdio_control, 0);
+ }
+
+ int ssb_pcicore_dev_irqvecs_enable(struct ssb_pcicore *pc,
+@@ -551,13 +681,13 @@ int ssb_pcicore_dev_irqvecs_enable(struc
projects / openwrt.git / blobdiff