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path: root/drivers/usb/host/pci-quirks.c
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Diffstat (limited to 'drivers/usb/host/pci-quirks.c')
-rw-r--r--drivers/usb/host/pci-quirks.c141
1 files changed, 115 insertions, 26 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index 2c76ef1320ea..dfbdd3aefe98 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -79,11 +79,30 @@
#define USB_INTEL_USB3_PSSEN 0xD8
#define USB_INTEL_USB3PRM 0xDC
+/*
+ * amd_chipset_gen values represent AMD different chipset generations
+ */
+enum amd_chipset_gen {
+ NOT_AMD_CHIPSET = 0,
+ AMD_CHIPSET_SB600,
+ AMD_CHIPSET_SB700,
+ AMD_CHIPSET_SB800,
+ AMD_CHIPSET_HUDSON2,
+ AMD_CHIPSET_BOLTON,
+ AMD_CHIPSET_YANGTZE,
+ AMD_CHIPSET_UNKNOWN,
+};
+
+struct amd_chipset_type {
+ enum amd_chipset_gen gen;
+ u8 rev;
+};
+
static struct amd_chipset_info {
struct pci_dev *nb_dev;
struct pci_dev *smbus_dev;
int nb_type;
- int sb_type;
+ struct amd_chipset_type sb_type;
int isoc_reqs;
int probe_count;
int probe_result;
@@ -91,6 +110,51 @@ static struct amd_chipset_info {
static DEFINE_SPINLOCK(amd_lock);
+/*
+ * amd_chipset_sb_type_init - initialize amd chipset southbridge type
+ *
+ * AMD FCH/SB generation and revision is identified by SMBus controller
+ * vendor, device and revision IDs.
+ *
+ * Returns: 1 if it is an AMD chipset, 0 otherwise.
+ */
+static int amd_chipset_sb_type_init(struct amd_chipset_info *pinfo)
+{
+ u8 rev = 0;
+ pinfo->sb_type.gen = AMD_CHIPSET_UNKNOWN;
+
+ pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI,
+ PCI_DEVICE_ID_ATI_SBX00_SMBUS, NULL);
+ if (pinfo->smbus_dev) {
+ rev = pinfo->smbus_dev->revision;
+ if (rev >= 0x10 && rev <= 0x1f)
+ pinfo->sb_type.gen = AMD_CHIPSET_SB600;
+ else if (rev >= 0x30 && rev <= 0x3f)
+ pinfo->sb_type.gen = AMD_CHIPSET_SB700;
+ else if (rev >= 0x40 && rev <= 0x4f)
+ pinfo->sb_type.gen = AMD_CHIPSET_SB800;
+ } else {
+ pinfo->smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
+ PCI_DEVICE_ID_AMD_HUDSON2_SMBUS, NULL);
+
+ if (!pinfo->smbus_dev) {
+ pinfo->sb_type.gen = NOT_AMD_CHIPSET;
+ return 0;
+ }
+
+ rev = pinfo->smbus_dev->revision;
+ if (rev >= 0x11 && rev <= 0x14)
+ pinfo->sb_type.gen = AMD_CHIPSET_HUDSON2;
+ else if (rev >= 0x15 && rev <= 0x18)
+ pinfo->sb_type.gen = AMD_CHIPSET_BOLTON;
+ else if (rev >= 0x39 && rev <= 0x3a)
+ pinfo->sb_type.gen = AMD_CHIPSET_YANGTZE;
+ }
+
+ pinfo->sb_type.rev = rev;
+ return 1;
+}
+
void sb800_prefetch(struct device *dev, int on)
{
u16 misc;
@@ -106,7 +170,6 @@ EXPORT_SYMBOL_GPL(sb800_prefetch);
int usb_amd_find_chipset_info(void)
{
- u8 rev = 0;
unsigned long flags;
struct amd_chipset_info info;
int ret;
@@ -122,27 +185,17 @@ int usb_amd_find_chipset_info(void)
memset(&info, 0, sizeof(info));
spin_unlock_irqrestore(&amd_lock, flags);
- info.smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, 0x4385, NULL);
- if (info.smbus_dev) {
- rev = info.smbus_dev->revision;
- if (rev >= 0x40)
- info.sb_type = 1;
- else if (rev >= 0x30 && rev <= 0x3b)
- info.sb_type = 3;
- } else {
- info.smbus_dev = pci_get_device(PCI_VENDOR_ID_AMD,
- 0x780b, NULL);
- if (!info.smbus_dev) {
- ret = 0;
- goto commit;
- }
-
- rev = info.smbus_dev->revision;
- if (rev >= 0x11 && rev <= 0x18)
- info.sb_type = 2;
+ if (!amd_chipset_sb_type_init(&info)) {
+ ret = 0;
+ goto commit;
}
- if (info.sb_type == 0) {
+ /* Below chipset generations needn't enable AMD PLL quirk */
+ if (info.sb_type.gen == AMD_CHIPSET_UNKNOWN ||
+ info.sb_type.gen == AMD_CHIPSET_SB600 ||
+ info.sb_type.gen == AMD_CHIPSET_YANGTZE ||
+ (info.sb_type.gen == AMD_CHIPSET_SB700 &&
+ info.sb_type.rev > 0x3b)) {
if (info.smbus_dev) {
pci_dev_put(info.smbus_dev);
info.smbus_dev = NULL;
@@ -197,6 +250,39 @@ commit:
}
EXPORT_SYMBOL_GPL(usb_amd_find_chipset_info);
+int usb_hcd_amd_remote_wakeup_quirk(struct pci_dev *pdev)
+{
+ /* Make sure amd chipset type has already been initialized */
+ usb_amd_find_chipset_info();
+ if (amd_chipset.sb_type.gen != AMD_CHIPSET_YANGTZE)
+ return 0;
+
+ dev_dbg(&pdev->dev, "QUIRK: Enable AMD remote wakeup fix\n");
+ return 1;
+}
+EXPORT_SYMBOL_GPL(usb_hcd_amd_remote_wakeup_quirk);
+
+bool usb_amd_hang_symptom_quirk(void)
+{
+ u8 rev;
+
+ usb_amd_find_chipset_info();
+ rev = amd_chipset.sb_type.rev;
+ /* SB600 and old version of SB700 have hang symptom bug */
+ return amd_chipset.sb_type.gen == AMD_CHIPSET_SB600 ||
+ (amd_chipset.sb_type.gen == AMD_CHIPSET_SB700 &&
+ rev >= 0x3a && rev <= 0x3b);
+}
+EXPORT_SYMBOL_GPL(usb_amd_hang_symptom_quirk);
+
+bool usb_amd_prefetch_quirk(void)
+{
+ usb_amd_find_chipset_info();
+ /* SB800 needs pre-fetch fix */
+ return amd_chipset.sb_type.gen == AMD_CHIPSET_SB800;
+}
+EXPORT_SYMBOL_GPL(usb_amd_prefetch_quirk);
+
/*
* The hardware normally enables the A-link power management feature, which
* lets the system lower the power consumption in idle states.
@@ -229,7 +315,9 @@ static void usb_amd_quirk_pll(int disable)
}
}
- if (amd_chipset.sb_type == 1 || amd_chipset.sb_type == 2) {
+ if (amd_chipset.sb_type.gen == AMD_CHIPSET_SB800 ||
+ amd_chipset.sb_type.gen == AMD_CHIPSET_HUDSON2 ||
+ amd_chipset.sb_type.gen == AMD_CHIPSET_BOLTON) {
outb_p(AB_REG_BAR_LOW, 0xcd6);
addr_low = inb_p(0xcd7);
outb_p(AB_REG_BAR_HIGH, 0xcd6);
@@ -240,7 +328,8 @@ static void usb_amd_quirk_pll(int disable)
outl_p(0x40, AB_DATA(addr));
outl_p(0x34, AB_INDX(addr));
val = inl_p(AB_DATA(addr));
- } else if (amd_chipset.sb_type == 3) {
+ } else if (amd_chipset.sb_type.gen == AMD_CHIPSET_SB700 &&
+ amd_chipset.sb_type.rev <= 0x3b) {
pci_read_config_dword(amd_chipset.smbus_dev,
AB_REG_BAR_SB700, &addr);
outl(AX_INDXC, AB_INDX(addr));
@@ -353,7 +442,7 @@ void usb_amd_dev_put(void)
amd_chipset.nb_dev = NULL;
amd_chipset.smbus_dev = NULL;
amd_chipset.nb_type = 0;
- amd_chipset.sb_type = 0;
+ memset(&amd_chipset.sb_type, 0, sizeof(amd_chipset.sb_type));
amd_chipset.isoc_reqs = 0;
amd_chipset.probe_result = 0;
@@ -799,7 +888,7 @@ void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev)
* switchable ports.
*/
pci_write_config_dword(xhci_pdev, USB_INTEL_USB3_PSSEN,
- cpu_to_le32(ports_available));
+ ports_available);
pci_read_config_dword(xhci_pdev, USB_INTEL_USB3_PSSEN,
&ports_available);
@@ -821,7 +910,7 @@ void usb_enable_intel_xhci_ports(struct pci_dev *xhci_pdev)
* host.
*/
pci_write_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
- cpu_to_le32(ports_available));
+ ports_available);
pci_read_config_dword(xhci_pdev, USB_INTEL_XUSB2PR,
&ports_available);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 19:21:27 +0000