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drm/nouveau/pci: implement pcie speed change for tesla

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v5: don't set fermi or kepler func pointers
v6: fix alignment
This commit is contained in:
Karol Herbst 2016-01-05 21:44:18 +01:00 committed by Ben Skeggs
parent bcc19d9bf5
commit 5cca4bdc0d
3 changed files with 120 additions and 0 deletions
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92
drivers/gpu/drm/nouveau/nvkm/subdev/pci/g84.c
View File

@ -25,6 +25,80 @@
#include <core/pci.h>
static int
g84_pcie_version_supported(struct nvkm_pci *pci)
{
/* g84 and g86 report wrong information about what they support */
return 1;
}
int
g84_pcie_version(struct nvkm_pci *pci)
{
struct nvkm_device *device = pci->subdev.device;
return (nvkm_rd32(device, 0x00154c) & 0x1) + 1;
}
void
g84_pcie_set_version(struct nvkm_pci *pci, u8 ver)
{
struct nvkm_device *device = pci->subdev.device;
nvkm_mask(device, 0x00154c, 0x1, (ver >= 2 ? 0x1 : 0x0));
}
static void
g84_pcie_set_cap_speed(struct nvkm_pci *pci, bool full_speed)
{
struct nvkm_device *device = pci->subdev.device;
nvkm_mask(device, 0x00154c, 0x80, full_speed ? 0x80 : 0x0);
}
enum nvkm_pcie_speed
g84_pcie_cur_speed(struct nvkm_pci *pci)
{
u32 reg_v = nvkm_pci_rd32(pci, 0x88) & 0x30000;
switch (reg_v) {
case 0x30000:
return NVKM_PCIE_SPEED_8_0;
case 0x20000:
return NVKM_PCIE_SPEED_5_0;
case 0x10000:
default:
return NVKM_PCIE_SPEED_2_5;
}
}
enum nvkm_pcie_speed
g84_pcie_max_speed(struct nvkm_pci *pci)
{
u32 reg_v = nvkm_pci_rd32(pci, 0x460) & 0x3300;
if (reg_v == 0x2200)
return NVKM_PCIE_SPEED_5_0;
return NVKM_PCIE_SPEED_2_5;
}
void
g84_pcie_set_link_speed(struct nvkm_pci *pci, enum nvkm_pcie_speed speed)
{
u32 mask_value;
if (speed == NVKM_PCIE_SPEED_5_0)
mask_value = 0x20;
else
mask_value = 0x10;
nvkm_pci_mask(pci, 0x460, 0x30, mask_value);
nvkm_pci_mask(pci, 0x460, 0x1, 0x1);
}
int
g84_pcie_set_link(struct nvkm_pci *pci, enum nvkm_pcie_speed speed, u8 width)
{
g84_pcie_set_cap_speed(pci, speed == NVKM_PCIE_SPEED_5_0);
g84_pcie_set_link_speed(pci, speed);
return 0;
}
void
g84_pci_init(struct nvkm_pci *pci)
{
@ -48,6 +122,14 @@ g84_pci_init(struct nvkm_pci *pci)
nvkm_pci_mask(pci, 0x041c, 0x00000060, 0x00000000);
}
int
g84_pcie_init(struct nvkm_pci *pci)
{
bool full_speed = g84_pcie_cur_speed(pci) == NVKM_PCIE_SPEED_5_0;
g84_pcie_set_cap_speed(pci, full_speed);
return 0;
}
static const struct nvkm_pci_func
g84_pci_func = {
.init = g84_pci_init,
@ -55,6 +137,16 @@ g84_pci_func = {
.wr08 = nv40_pci_wr08,
.wr32 = nv40_pci_wr32,
.msi_rearm = nv46_pci_msi_rearm,
.pcie.init = g84_pcie_init,
.pcie.set_link = g84_pcie_set_link,
.pcie.max_speed = g84_pcie_max_speed,
.pcie.cur_speed = g84_pcie_cur_speed,
.pcie.set_version = g84_pcie_set_version,
.pcie.version = g84_pcie_version,
.pcie.version_supported = g84_pcie_version_supported,
};
int

18
drivers/gpu/drm/nouveau/nvkm/subdev/pci/g94.c
View File

@ -23,6 +23,14 @@
*/
#include "priv.h"
int
g94_pcie_version_supported(struct nvkm_pci *pci)
{
if ((nvkm_pci_rd32(pci, 0x460) & 0x200) == 0x200)
return 2;
return 1;
}
static const struct nvkm_pci_func
g94_pci_func = {
.init = g84_pci_init,
@ -30,6 +38,16 @@ g94_pci_func = {
.wr08 = nv40_pci_wr08,
.wr32 = nv40_pci_wr32,
.msi_rearm = nv40_pci_msi_rearm,
.pcie.init = g84_pcie_init,
.pcie.set_link = g84_pcie_set_link,
.pcie.max_speed = g84_pcie_max_speed,
.pcie.cur_speed = g84_pcie_cur_speed,
.pcie.set_version = g84_pcie_set_version,
.pcie.version = g84_pcie_version,
.pcie.version_supported = g94_pcie_version_supported,
};
int

10
drivers/gpu/drm/nouveau/nvkm/subdev/pci/priv.h
View File

@ -36,6 +36,16 @@ void nv46_pci_msi_rearm(struct nvkm_pci *);
void g84_pci_init(struct nvkm_pci *pci);
/* pcie functions */
void g84_pcie_set_version(struct nvkm_pci *, u8);
int g84_pcie_version(struct nvkm_pci *);
void g84_pcie_set_link_speed(struct nvkm_pci *, enum nvkm_pcie_speed);
enum nvkm_pcie_speed g84_pcie_cur_speed(struct nvkm_pci *);
enum nvkm_pcie_speed g84_pcie_max_speed(struct nvkm_pci *);
int g84_pcie_init(struct nvkm_pci *);
int g84_pcie_set_link(struct nvkm_pci *, enum nvkm_pcie_speed, u8);
int g94_pcie_version_supported(struct nvkm_pci *);
int nvkm_pcie_oneinit(struct nvkm_pci *);
int nvkm_pcie_init(struct nvkm_pci *);
#endif