static void ssb_pcie_mdio_write(struct ssb_pcicore *pc, u8 device,
u8 address, u16 data)
{
const u16 mdio_control = 0x128;
const u16 mdio_data = 0x12C;
u32 v;
int i;
v = 0x80;
v |= 0x2;
pcicore_write32(pc, mdio_control, v);
v = (1 << 30);
v |= (1 << 28);
v |= (1 << 17);
v |= (u32)device << 22;
v |= (u32)address << 18;
v |= data;
pcicore_write32(pc, mdio_data, v);
udelay(10);
for (i = 0; i < 10; i++) {
v = pcicore_read32(pc, mdio_control);
if (v & 0x100 )
break;
msleep(1);
}
pcicore_write32(pc, mdio_control, 0);
}
static void bcma_pcie_write_config(struct bcma_drv_pci *pc, u32 address,
u32 data)
{
pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_ADDR, address);
pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_ADDR);
pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_DATA, data);
}
static void ssb_pcie_mdio_write(struct ssb_pcicore *pc, u8 device,
u8 address, u16 data)
{
const u16 mdio_control = 0x128;
const u16 mdio_data = 0x12C;
u32 v;
int i;
v = 0x80; /* Enable Preamble Sequence */
v |= 0x2; /* MDIO Clock Divisor */
pcicore_write32(pc, mdio_control, v);
v = (1 << 30); /* Start of Transaction */
v |= (1 << 28); /* Write Transaction */
v |= (1 << 17); /* Turnaround */
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++) {
v = pcicore_read32(pc, mdio_control);
if (v & 0x100 /* Trans complete */)
break;
msleep(1);
}
pcicore_write32(pc, mdio_control, 0);
}
static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *pc, u8 device, u8 address)
{
int max_retries = 10;
u16 ret = 0;
u32 v;
int i;
/* enable mdio access to SERDES */
v = BCMA_CORE_PCI_MDIOCTL_PREAM_EN;
v |= BCMA_CORE_PCI_MDIOCTL_DIVISOR_VAL;
pcicore_write32(pc, BCMA_CORE_PCI_MDIO_CONTROL, v);
if (pc->core->id.rev >= 10) {
max_retries = 200;
bcma_pcie_mdio_set_phy(pc, device);
v = (BCMA_CORE_PCI_MDIODATA_DEV_ADDR <<
BCMA_CORE_PCI_MDIODATA_DEVADDR_SHF);
v |= (address << BCMA_CORE_PCI_MDIODATA_REGADDR_SHF);
} else {
v = (device << BCMA_CORE_PCI_MDIODATA_DEVADDR_SHF_OLD);
v |= (address << BCMA_CORE_PCI_MDIODATA_REGADDR_SHF_OLD);
}
v = BCMA_CORE_PCI_MDIODATA_START;
v |= BCMA_CORE_PCI_MDIODATA_READ;
v |= BCMA_CORE_PCI_MDIODATA_TA;
pcicore_write32(pc, BCMA_CORE_PCI_MDIO_DATA, v);
/* Wait for the device to complete the transaction */
udelay(10);
for (i = 0; i < max_retries; i++) {
v = pcicore_read32(pc, BCMA_CORE_PCI_MDIO_CONTROL);
if (v & BCMA_CORE_PCI_MDIOCTL_ACCESS_DONE) {
udelay(10);
ret = pcicore_read32(pc, BCMA_CORE_PCI_MDIO_DATA);
break;
}
msleep(1);
}
pcicore_write32(pc, BCMA_CORE_PCI_MDIO_CONTROL, 0);
return ret;
}
static u16 bcma_pcie_mdio_read(struct bcma_drv_pci *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->core->id.rev >= 10) {
max_retries = 200;
bcma_pcie_mdio_set_phy(pc, device);
}
v = (1 << 30); /* Start of Transaction */
v |= (1 << 29); /* Read Transaction */
v |= (1 << 17); /* Turnaround */
if (pc->core->id.rev < 10)
v |= (u32)device << 22;
v |= (u32)address << 18;
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 */) {
udelay(10);
ret = pcicore_read32(pc, mdio_data);
break;
}
msleep(1);
}
pcicore_write32(pc, mdio_control, 0);
return ret;
}
static void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *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 void bcma_pcie_mdio_set_phy(struct bcma_drv_pci *pc, u8 phy)
{
u32 v;
int i;
v = BCMA_CORE_PCI_MDIODATA_START;
v |= BCMA_CORE_PCI_MDIODATA_WRITE;
v |= (BCMA_CORE_PCI_MDIODATA_DEV_ADDR <<
BCMA_CORE_PCI_MDIODATA_DEVADDR_SHF);
v |= (BCMA_CORE_PCI_MDIODATA_BLK_ADDR <<
BCMA_CORE_PCI_MDIODATA_REGADDR_SHF);
v |= BCMA_CORE_PCI_MDIODATA_TA;
v |= (phy << 4);
pcicore_write32(pc, BCMA_CORE_PCI_MDIO_DATA, v);
udelay(10);
for (i = 0; i < 200; i++) {
v = pcicore_read32(pc, BCMA_CORE_PCI_MDIO_CONTROL);
if (v & BCMA_CORE_PCI_MDIOCTL_ACCESS_DONE)
break;
msleep(1);
}
}
static int bcma_extpci_read_config(struct bcma_drv_pci *pc, unsigned int dev,
unsigned int func, unsigned int off,
void *buf, int len)
{
int err = -EINVAL;
u32 addr, val;
void __iomem *mmio = 0;
WARN_ON(!pc->hostmode);
if (unlikely(len != 1 && len != 2 && len != 4))
goto out;
if (dev == 0) {
/* we support only two functions on device 0 */
if (func > 1)
goto out;
/* accesses to config registers with offsets >= 256
* requires indirect access.
*/
if (off >= PCI_CONFIG_SPACE_SIZE) {
addr = (func << 12);
addr |= (off & 0x0FFC);
val = bcma_pcie_read_config(pc, addr);
} else {
addr = BCMA_CORE_PCI_PCICFG0;
addr |= (func << 8);
addr |= (off & 0xFC);
val = pcicore_read32(pc, addr);
}
} else {
addr = bcma_get_cfgspace_addr(pc, dev, func, off);
if (unlikely(!addr))
goto out;
err = -ENOMEM;
mmio = ioremap_nocache(addr, sizeof(val));
if (!mmio)
goto out;
if (mips_busprobe32(val, mmio)) {
val = 0xFFFFFFFF;
goto unmap;
}
}
val >>= (8 * (off & 3));
switch (len) {
case 1:
*((u8 *)buf) = (u8)val;
break;
case 2:
*((u16 *)buf) = (u16)val;
break;
case 4:
*((u32 *)buf) = (u32)val;
break;
}
err = 0;
unmap:
if (mmio)
iounmap(mmio);
out:
return err;
}
static u32 bcma_pcie_read_config(struct bcma_drv_pci *pc, u32 address)
{
pcicore_write32(pc, BCMA_CORE_PCI_CONFIG_ADDR, address);
pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_ADDR);
return pcicore_read32(pc, BCMA_CORE_PCI_CONFIG_DATA);
}
static int bcma_extpci_write_config(struct bcma_drv_pci *pc, unsigned int dev,
unsigned int func, unsigned int off,
const void *buf, int len)
{
int err = -EINVAL;
u32 addr, val;
void __iomem *mmio = 0;
u16 chipid = pc->core->bus->chipinfo.id;
WARN_ON(!pc->hostmode);
if (unlikely(len != 1 && len != 2 && len != 4))
goto out;
if (dev == 0) {
/* we support only two functions on device 0 */
if (func > 1)
goto out;
/* accesses to config registers with offsets >= 256
* requires indirect access.
*/
if (off >= PCI_CONFIG_SPACE_SIZE) {
addr = (func << 12);
addr |= (off & 0x0FFC);
val = bcma_pcie_read_config(pc, addr);
} else {
addr = BCMA_CORE_PCI_PCICFG0;
addr |= (func << 8);
addr |= (off & 0xFC);
val = pcicore_read32(pc, addr);
}
} else {
addr = bcma_get_cfgspace_addr(pc, dev, func, off);
if (unlikely(!addr))
goto out;
err = -ENOMEM;
mmio = ioremap_nocache(addr, sizeof(val));
if (!mmio)
goto out;
if (mips_busprobe32(val, mmio)) {
val = 0xFFFFFFFF;
goto unmap;
}
}
switch (len) {
case 1:
val &= ~(0xFF << (8 * (off & 3)));
val |= *((const u8 *)buf) << (8 * (off & 3));
break;
case 2:
val &= ~(0xFFFF << (8 * (off & 3)));
val |= *((const u16 *)buf) << (8 * (off & 3));
break;
case 4:
val = *((const u32 *)buf);
break;
}
if (dev == 0) {
/* accesses to config registers with offsets >= 256
* requires indirect access.
*/
if (off >= PCI_CONFIG_SPACE_SIZE)
bcma_pcie_write_config(pc, addr, val);
else
pcicore_write32(pc, addr, val);
} else {
writel(val, mmio);
if (chipid == BCMA_CHIP_ID_BCM4716 ||
chipid == BCMA_CHIP_ID_BCM4748)
readl(mmio);
}
err = 0;
unmap:
if (mmio)
iounmap(mmio);
out:
return err;
}
int ssb_pcicore_dev_irqvecs_enable(struct ssb_pcicore *pc,
struct ssb_device *dev)
{
struct ssb_device *pdev = pc->dev;
struct ssb_bus *bus;
int err = 0;
u32 tmp;
might_sleep();
if (!pdev)
goto out;
bus = pdev->bus;
/* Enable interrupts for this device. */
if (bus->host_pci &&
((pdev->id.revision >= 6) || (pdev->id.coreid == SSB_DEV_PCIE))) {
u32 coremask;
/* Calculate the "coremask" for the device. */
coremask = (1 << dev->core_index);
err = pci_read_config_dword(bus->host_pci, SSB_PCI_IRQMASK, &tmp);
if (err)
goto out;
tmp |= coremask << 8;
err = pci_write_config_dword(bus->host_pci, SSB_PCI_IRQMASK, tmp);
if (err)
goto out;
} else {
u32 intvec;
intvec = ssb_read32(pdev, SSB_INTVEC);
if ((bus->chip_id & 0xFF00) == 0x4400) {
/* Workaround: On the BCM44XX the BPFLAG routing
* bit is wrong. Use a hardcoded constant. */
intvec |= 0x00000002;
} else {
tmp = ssb_read32(dev, SSB_TPSFLAG);
tmp &= SSB_TPSFLAG_BPFLAG;
intvec |= tmp;
}
ssb_write32(pdev, SSB_INTVEC, intvec);
}
/* Setup PCIcore operation. */
if (pc->setup_done)
goto out;
if (pdev->id.coreid == SSB_DEV_PCI) {
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);
}
} else {
WARN_ON(pdev->id.coreid != SSB_DEV_PCIE);
//TODO: Better make defines for all these magic PCIE values.
if ((pdev->id.revision == 0) || (pdev->id.revision == 1)) {
/* TLP Workaround register. */
tmp = ssb_pcie_read(pc, 0x4);
tmp |= 0x8;
ssb_pcie_write(pc, 0x4, tmp);
}
if (pdev->id.revision == 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 (pdev->id.revision == 1) {
/* DLLP Link Control register. */
tmp = ssb_pcie_read(pc, 0x100);
tmp |= 0x40;
ssb_pcie_write(pc, 0x100, tmp);
}
}
pc->setup_done = 1;
out:
return err;
}
static u32 ssb_pcie_read(struct ssb_pcicore *pc, u32 address)
{
pcicore_write32(pc, 0x130, address);
return pcicore_read32(pc, 0x134);
}
int ssb_pcicore_dev_irqvecs_enable(struct ssb_pcicore *pc,
struct ssb_device *dev)
{
struct ssb_device *pdev = pc->dev;
struct ssb_bus *bus;
int err = 0;
u32 tmp;
if (dev->bus->bustype != SSB_BUSTYPE_PCI) {
goto out;
}
if (!pdev)
goto out;
bus = pdev->bus;
might_sleep_if(pdev->id.coreid != SSB_DEV_PCI);
if (bus->host_pci &&
((pdev->id.revision >= 6) || (pdev->id.coreid == SSB_DEV_PCIE))) {
u32 coremask;
coremask = (1 << dev->core_index);
err = pci_read_config_dword(bus->host_pci, SSB_PCI_IRQMASK, &tmp);
if (err)
goto out;
tmp |= coremask << 8;
err = pci_write_config_dword(bus->host_pci, SSB_PCI_IRQMASK, tmp);
if (err)
goto out;
} else {
u32 intvec;
intvec = ssb_read32(pdev, SSB_INTVEC);
tmp = ssb_read32(dev, SSB_TPSFLAG);
tmp &= SSB_TPSFLAG_BPFLAG;
intvec |= (1 << tmp);
ssb_write32(pdev, SSB_INTVEC, intvec);
}
if (pc->setup_done)
goto out;
if (pdev->id.coreid == SSB_DEV_PCI) {
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);
}
} else {
WARN_ON(pdev->id.coreid != SSB_DEV_PCIE);
if ((pdev->id.revision == 0) || (pdev->id.revision == 1)) {
tmp = ssb_pcie_read(pc, 0x4);
tmp |= 0x8;
ssb_pcie_write(pc, 0x4, tmp);
}
if (pdev->id.revision == 0) {
const u8 serdes_rx_device = 0x1F;
ssb_pcie_mdio_write(pc, serdes_rx_device,
2 , 0x8128);
ssb_pcie_mdio_write(pc, serdes_rx_device,
6 , 0x0100);
ssb_pcie_mdio_write(pc, serdes_rx_device,
7 , 0x1466);
} else if (pdev->id.revision == 1) {
tmp = ssb_pcie_read(pc, 0x100);
tmp |= 0x40;
ssb_pcie_write(pc, 0x100, tmp);
}
}
pc->setup_done = 1;
out:
return err;
}
u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address)
{
pcicore_write32(pc, BCMA_CORE_PCI_PCIEIND_ADDR, address);
pcicore_read32(pc, BCMA_CORE_PCI_PCIEIND_ADDR);
return pcicore_read32(pc, BCMA_CORE_PCI_PCIEIND_DATA);
}
static void bcma_pcie_write(struct bcma_drv_pci *pc, u32 address, u32 data)
{
pcicore_write32(pc, 0x130, address);
pcicore_read32(pc, 0x130);
pcicore_write32(pc, 0x134, data);
}
static u32 bcma_pcie_read(struct bcma_drv_pci *pc, u32 address)
{
pcicore_write32(pc, 0x130, address);
pcicore_read32(pc, 0x130);
return pcicore_read32(pc, 0x134);
}
