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authorDuncan Laurie <dlaurie@chromium.org>2013-07-30 15:58:18 -0700
committerPatrick Georgi <patrick@georgi-clan.de>2013-12-21 23:54:51 +0100
commit0dcb577652026dea116b87b0c3dd0fb16ec0aed3 (patch)
tree57f8e79a70bf01979a265e97a1bfe70f304082be /src
parent911cedff97c45f0794f014ceb16a83edafd028c0 (diff)
lynxpoint: Fix issues with XHCI init
- Put the device into D0 and not D3 so memory bar is available and the subsequent commands actually do something useful - Remove set of 818Ch[7:0]=FFh (gone in ref code) - Fix reg 0x40/0x44 mixup Verify that expected bits are set: localhost ~ # pci_read32 0 0x14 0 0x10 0xe0500004 localhost ~ # mmio_read32 0xe0508144 0x000003ff localhost ~ # mmio_read32 0xe050816c 0x000f0038 Change-Id: I388398e8c7d11e538ca18dab55d8bbd9b88f17df Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/63801 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/4408 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src')
-rw-r--r--src/southbridge/intel/lynxpoint/usb_xhci.c39
1 files changed, 17 insertions, 22 deletions
diff --git a/src/southbridge/intel/lynxpoint/usb_xhci.c b/src/southbridge/intel/lynxpoint/usb_xhci.c
index dbf0f4095d..f866c4faba 100644
--- a/src/southbridge/intel/lynxpoint/usb_xhci.c
+++ b/src/southbridge/intel/lynxpoint/usb_xhci.c
@@ -235,6 +235,7 @@ void usb_xhci_route_all(void)
static void usb_xhci_clock_gating(device_t dev)
{
u32 reg32;
+ u16 reg16;
/* IOBP 0xE5004001[7:6] = 11b */
pch_iobp_update(0xe5004001, ~0, (1 << 7)|(1 << 6));
@@ -258,9 +259,9 @@ static void usb_xhci_clock_gating(device_t dev)
pci_write_config8(dev, 0x40 + 2, (u8)((reg32 >> 16) & 0xff));
/* D20:F0:44h[9,7,3] = 111b */
- reg32 = pci_read_config32(dev, 0x44);
- reg32 |= (1 << 9) | (1 << 7) | (1 << 3);
- pci_write_config32(dev, 0x44, reg32);
+ reg16 = pci_read_config16(dev, 0x44);
+ reg16 |= (1 << 9) | (1 << 7) | (1 << 3);
+ pci_write_config16(dev, 0x44, reg16);
reg32 = pci_read_config32(dev, 0xa0);
if (pch_is_lp()) {
@@ -323,21 +324,20 @@ static void usb_xhci_enable_ports_usb3(device_t dev)
static void usb_xhci_init(device_t dev)
{
- struct resource *bar0 = find_resource(dev, PCI_BASE_ADDRESS_0);
u32 reg32;
+ u16 reg16;
+ u32 mem_base = usb_xhci_mem_base(dev);
- if (!bar0 || bar0->base == 0 || bar0->base == 0xffffffff)
- return;
+ /* D20:F0:74h[1:0] = 00b (set D0 state) */
+ reg16 = pci_read_config16(dev, XHCI_PWR_CTL_STS);
+ reg16 &= ~PWR_CTL_SET_MASK;
+ reg16 |= PWR_CTL_SET_D0;
+ pci_write_config16(dev, XHCI_PWR_CTL_STS, reg16);
/* Enable clock gating first */
usb_xhci_clock_gating(dev);
- /* D20:F0:74h[1:0] = 11b (set D3Hot state) */
- reg32 = pci_read_config16(dev, 0x74);
- reg32 |= (1 << 1) | (1 << 0);
- pci_write_config16(dev, 0x74, reg32);
-
- reg32 = read32(bar0->base + 0x8144);
+ reg32 = read32(mem_base + 0x8144);
if (pch_is_lp()) {
/* XHCIBAR + 8144h[8,7,6] = 111b */
reg32 |= (1 << 8) | (1 << 7) | (1 << 6);
@@ -346,25 +346,20 @@ static void usb_xhci_init(device_t dev)
reg32 &= ~((1 << 7) | (1 << 6));
reg32 |= (1 << 8);
}
- write32(bar0->base + 0x8144, reg32);
+ write32(mem_base + 0x8144, reg32);
if (pch_is_lp()) {
/* XHCIBAR + 816Ch[19:0] = 000f0038h */
- reg32 = read32(bar0->base + 0x816c);
+ reg32 = read32(mem_base + 0x816c);
reg32 &= ~0x000fffff;
reg32 |= 0x000f0038;
- write32(bar0->base + 0x816c, reg32);
+ write32(mem_base + 0x816c, reg32);
/* D20:F0:B0h[17,14,13] = 100b */
reg32 = pci_read_config32(dev, 0xb0);
reg32 &= ~((1 << 14) | (1 << 13));
reg32 |= (1 << 17);
pci_write_config32(dev, 0xb0, reg32);
-
- /* XHCIBAR + 818Ch[7:0] = FFh */
- reg32 = read32(bar0->base + 0x818c);
- reg32 |= 0xff;
- write32(bar0->base + 0x818c, reg32);
}
reg32 = pci_read_config32(dev, 0x50);
@@ -380,9 +375,9 @@ static void usb_xhci_init(device_t dev)
pci_write_config32(dev, 0x50, reg32);
/* D20:F0:44h[31] = 1 (Access Control Bit) */
- reg32 = pci_read_config32(dev, 0x40);
+ reg32 = pci_read_config32(dev, 0x44);
reg32 |= (1 << 31);
- pci_write_config32(dev, 0x40, reg32);
+ pci_write_config32(dev, 0x44, reg32);
/* D20:F0:40h[31,23] = 10b (OC Configuration Done) */
reg32 = pci_read_config32(dev, 0x40);