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drm/radeon/kms: add support for gen2 pcie link speeds 

Supported on rv6xx/r7xx/evergreen.  Cards come up in gen1 mode.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Alex Deucher 2011-01-06 18:49:35 -05:00 committed by Dave Airlie
parent 3313e3d433
commit 9e46a48df2
7 changed files with 348 additions and 0 deletions
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53
drivers/gpu/drm/radeon/evergreen.c
View File

@ -39,6 +39,7 @@
static void evergreen_gpu_init(struct radeon_device *rdev);
void evergreen_fini(struct radeon_device *rdev);
static void evergreen_pcie_gen2_enable(struct radeon_device *rdev);
void evergreen_pre_page_flip(struct radeon_device *rdev, int crtc)
{
@ -2767,6 +2768,9 @@ static int evergreen_startup(struct radeon_device *rdev)
{
int r;
/* enable pcie gen2 link */
evergreen_pcie_gen2_enable(rdev);
if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
r = r600_init_microcode(rdev);
if (r) {
@ -3049,3 +3053,52 @@ void evergreen_fini(struct radeon_device *rdev)
rdev->bios = NULL;
radeon_dummy_page_fini(rdev);
}
static void evergreen_pcie_gen2_enable(struct radeon_device *rdev)
{
u32 link_width_cntl, speed_cntl;
if (rdev->flags & RADEON_IS_IGP)
return;
if (!(rdev->flags & RADEON_IS_PCIE))
return;
/* x2 cards have a special sequence */
if (ASIC_IS_X2(rdev))
return;
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
if ((speed_cntl & LC_OTHER_SIDE_EVER_SENT_GEN2) ||
(speed_cntl & LC_OTHER_SIDE_SUPPORTS_GEN2)) {
link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
link_width_cntl &= ~LC_UPCONFIGURE_DIS;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl &= ~LC_TARGET_LINK_SPEED_OVERRIDE_EN;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl |= LC_CLR_FAILED_SPD_CHANGE_CNT;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl &= ~LC_CLR_FAILED_SPD_CHANGE_CNT;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl |= LC_GEN2_EN_STRAP;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
} else {
link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
/* XXX: only disable it if gen1 bridge vendor == 0x111d or 0x1106 */
if (1)
link_width_cntl |= LC_UPCONFIGURE_DIS;
else
link_width_cntl &= ~LC_UPCONFIGURE_DIS;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
}
}

38
drivers/gpu/drm/radeon/evergreend.h
View File

@ -581,6 +581,44 @@
# define DC_HPDx_RX_INT_TIMER(x) ((x) << 16)
# define DC_HPDx_EN (1 << 28)
/* PCIE link stuff */
#define PCIE_LC_TRAINING_CNTL 0xa1 /* PCIE_P */
#define PCIE_LC_LINK_WIDTH_CNTL 0xa2 /* PCIE_P */
# define LC_LINK_WIDTH_SHIFT 0
# define LC_LINK_WIDTH_MASK 0x7
# define LC_LINK_WIDTH_X0 0
# define LC_LINK_WIDTH_X1 1
# define LC_LINK_WIDTH_X2 2
# define LC_LINK_WIDTH_X4 3
# define LC_LINK_WIDTH_X8 4
# define LC_LINK_WIDTH_X16 6
# define LC_LINK_WIDTH_RD_SHIFT 4
# define LC_LINK_WIDTH_RD_MASK 0x70
# define LC_RECONFIG_ARC_MISSING_ESCAPE (1 << 7)
# define LC_RECONFIG_NOW (1 << 8)
# define LC_RENEGOTIATION_SUPPORT (1 << 9)
# define LC_RENEGOTIATE_EN (1 << 10)
# define LC_SHORT_RECONFIG_EN (1 << 11)
# define LC_UPCONFIGURE_SUPPORT (1 << 12)
# define LC_UPCONFIGURE_DIS (1 << 13)
#define PCIE_LC_SPEED_CNTL 0xa4 /* PCIE_P */
# define LC_GEN2_EN_STRAP (1 << 0)
# define LC_TARGET_LINK_SPEED_OVERRIDE_EN (1 << 1)
# define LC_FORCE_EN_HW_SPEED_CHANGE (1 << 5)
# define LC_FORCE_DIS_HW_SPEED_CHANGE (1 << 6)
# define LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_MASK (0x3 << 8)
# define LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_SHIFT 3
# define LC_CURRENT_DATA_RATE (1 << 11)
# define LC_VOLTAGE_TIMER_SEL_MASK (0xf << 14)
# define LC_CLR_FAILED_SPD_CHANGE_CNT (1 << 21)
# define LC_OTHER_SIDE_EVER_SENT_GEN2 (1 << 23)
# define LC_OTHER_SIDE_SUPPORTS_GEN2 (1 << 24)
#define MM_CFGREGS_CNTL 0x544c
# define MM_WR_TO_CFG_EN (1 << 3)
#define LINK_CNTL2 0x88 /* F0 */
# define TARGET_LINK_SPEED_MASK (0xf << 0)
# define SELECTABLE_DEEMPHASIS (1 << 6)
/*
* PM4
*/

102
drivers/gpu/drm/radeon/r600.c
View File

@ -94,6 +94,7 @@ int r600_mc_wait_for_idle(struct radeon_device *rdev);
void r600_gpu_init(struct radeon_device *rdev);
void r600_fini(struct radeon_device *rdev);
void r600_irq_disable(struct radeon_device *rdev);
static void r600_pcie_gen2_enable(struct radeon_device *rdev);
/* get temperature in millidegrees */
u32 rv6xx_get_temp(struct radeon_device *rdev)
@ -2379,6 +2380,9 @@ int r600_startup(struct radeon_device *rdev)
{
int r;
/* enable pcie gen2 link */
r600_pcie_gen2_enable(rdev);
if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
r = r600_init_microcode(rdev);
if (r) {
@ -3649,3 +3653,101 @@ int r600_get_pcie_lanes(struct radeon_device *rdev)
}
}
static void r600_pcie_gen2_enable(struct radeon_device *rdev)
{
u32 link_width_cntl, lanes, speed_cntl, training_cntl, tmp;
u16 link_cntl2;
if (rdev->flags & RADEON_IS_IGP)
return;
if (!(rdev->flags & RADEON_IS_PCIE))
return;
/* x2 cards have a special sequence */
if (ASIC_IS_X2(rdev))
return;
/* only RV6xx+ chips are supported */
if (rdev->family <= CHIP_R600)
return;
/* 55 nm r6xx asics */
if ((rdev->family == CHIP_RV670) ||
(rdev->family == CHIP_RV620) ||
(rdev->family == CHIP_RV635)) {
/* advertise upconfig capability */
link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
link_width_cntl &= ~LC_UPCONFIGURE_DIS;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
if (link_width_cntl & LC_RENEGOTIATION_SUPPORT) {
lanes = (link_width_cntl & LC_LINK_WIDTH_RD_MASK) >> LC_LINK_WIDTH_RD_SHIFT;
link_width_cntl &= ~(LC_LINK_WIDTH_MASK |
LC_RECONFIG_ARC_MISSING_ESCAPE);
link_width_cntl |= lanes | LC_RECONFIG_NOW | LC_RENEGOTIATE_EN;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
} else {
link_width_cntl |= LC_UPCONFIGURE_DIS;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
}
}
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
if ((speed_cntl & LC_OTHER_SIDE_EVER_SENT_GEN2) &&
(speed_cntl & LC_OTHER_SIDE_SUPPORTS_GEN2)) {
/* 55 nm r6xx asics */
if ((rdev->family == CHIP_RV670) ||
(rdev->family == CHIP_RV620) ||
(rdev->family == CHIP_RV635)) {
WREG32(MM_CFGREGS_CNTL, 0x8);
link_cntl2 = RREG32(0x4088);
WREG32(MM_CFGREGS_CNTL, 0);
/* not supported yet */
if (link_cntl2 & SELECTABLE_DEEMPHASIS)
return;
}
speed_cntl &= ~LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_MASK;
speed_cntl |= (0x3 << LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_SHIFT);
speed_cntl &= ~LC_VOLTAGE_TIMER_SEL_MASK;
speed_cntl &= ~LC_FORCE_DIS_HW_SPEED_CHANGE;
speed_cntl |= LC_FORCE_EN_HW_SPEED_CHANGE;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
tmp = RREG32(0x541c);
WREG32(0x541c, tmp | 0x8);
WREG32(MM_CFGREGS_CNTL, MM_WR_TO_CFG_EN);
link_cntl2 = RREG16(0x4088);
link_cntl2 &= ~TARGET_LINK_SPEED_MASK;
link_cntl2 |= 0x2;
WREG16(0x4088, link_cntl2);
WREG32(MM_CFGREGS_CNTL, 0);
if ((rdev->family == CHIP_RV670) ||
(rdev->family == CHIP_RV620) ||
(rdev->family == CHIP_RV635)) {
training_cntl = RREG32_PCIE_P(PCIE_LC_TRAINING_CNTL);
training_cntl &= ~LC_POINT_7_PLUS_EN;
WREG32_PCIE_P(PCIE_LC_TRAINING_CNTL, training_cntl);
} else {
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl &= ~LC_TARGET_LINK_SPEED_OVERRIDE_EN;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
}
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl |= LC_GEN2_EN_STRAP;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
} else {
link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
/* XXX: only disable it if gen1 bridge vendor == 0x111d or 0x1106 */
if (1)
link_width_cntl |= LC_UPCONFIGURE_DIS;
else
link_width_cntl &= ~LC_UPCONFIGURE_DIS;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
}
}

39
drivers/gpu/drm/radeon/r600d.h
View File

@ -737,6 +737,45 @@
# define DxGRPH_PFLIP_INT_MASK (1 << 0)
# define DxGRPH_PFLIP_INT_TYPE (1 << 8)
/* PCIE link stuff */
#define PCIE_LC_TRAINING_CNTL 0xa1 /* PCIE_P */
# define LC_POINT_7_PLUS_EN (1 << 6)
#define PCIE_LC_LINK_WIDTH_CNTL 0xa2 /* PCIE_P */
# define LC_LINK_WIDTH_SHIFT 0
# define LC_LINK_WIDTH_MASK 0x7
# define LC_LINK_WIDTH_X0 0
# define LC_LINK_WIDTH_X1 1
# define LC_LINK_WIDTH_X2 2
# define LC_LINK_WIDTH_X4 3
# define LC_LINK_WIDTH_X8 4
# define LC_LINK_WIDTH_X16 6
# define LC_LINK_WIDTH_RD_SHIFT 4
# define LC_LINK_WIDTH_RD_MASK 0x70
# define LC_RECONFIG_ARC_MISSING_ESCAPE (1 << 7)
# define LC_RECONFIG_NOW (1 << 8)
# define LC_RENEGOTIATION_SUPPORT (1 << 9)
# define LC_RENEGOTIATE_EN (1 << 10)
# define LC_SHORT_RECONFIG_EN (1 << 11)
# define LC_UPCONFIGURE_SUPPORT (1 << 12)
# define LC_UPCONFIGURE_DIS (1 << 13)
#define PCIE_LC_SPEED_CNTL 0xa4 /* PCIE_P */
# define LC_GEN2_EN_STRAP (1 << 0)
# define LC_TARGET_LINK_SPEED_OVERRIDE_EN (1 << 1)
# define LC_FORCE_EN_HW_SPEED_CHANGE (1 << 5)
# define LC_FORCE_DIS_HW_SPEED_CHANGE (1 << 6)
# define LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_MASK (0x3 << 8)
# define LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_SHIFT 3
# define LC_CURRENT_DATA_RATE (1 << 11)
# define LC_VOLTAGE_TIMER_SEL_MASK (0xf << 14)
# define LC_CLR_FAILED_SPD_CHANGE_CNT (1 << 21)
# define LC_OTHER_SIDE_EVER_SENT_GEN2 (1 << 23)
# define LC_OTHER_SIDE_SUPPORTS_GEN2 (1 << 24)
#define MM_CFGREGS_CNTL 0x544c
# define MM_WR_TO_CFG_EN (1 << 3)
#define LINK_CNTL2 0x88 /* F0 */
# define TARGET_LINK_SPEED_MASK (0xf << 0)
# define SELECTABLE_DEEMPHASIS (1 << 6)
/*
* PM4
*/

2
drivers/gpu/drm/radeon/radeon.h
View File

@ -1244,6 +1244,8 @@ static inline void r100_io_wreg(struct radeon_device *rdev, u32 reg, u32 v)
*/
#define RREG8(reg) readb(((void __iomem *)rdev->rmmio) + (reg))
#define WREG8(reg, v) writeb(v, ((void __iomem *)rdev->rmmio) + (reg))
#define RREG16(reg) readw(((void __iomem *)rdev->rmmio) + (reg))
#define WREG16(reg, v) writew(v, ((void __iomem *)rdev->rmmio) + (reg))
#define RREG32(reg) r100_mm_rreg(rdev, (reg))
#define DREG32(reg) printk(KERN_INFO "REGISTER: " #reg " : 0x%08X\n", r100_mm_rreg(rdev, (reg)))
#define WREG32(reg, v) r100_mm_wreg(rdev, (reg), (v))

76
drivers/gpu/drm/radeon/rv770.c
View File

@ -41,6 +41,7 @@
static void rv770_gpu_init(struct radeon_device *rdev);
void rv770_fini(struct radeon_device *rdev);
static void rv770_pcie_gen2_enable(struct radeon_device *rdev);
u32 rv770_page_flip(struct radeon_device *rdev, int crtc_id, u64 crtc_base)
{
@ -1124,6 +1125,9 @@ static int rv770_startup(struct radeon_device *rdev)
{
int r;
/* enable pcie gen2 link */
rv770_pcie_gen2_enable(rdev);
if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {
r = r600_init_microcode(rdev);
if (r) {
@ -1362,3 +1366,75 @@ void rv770_fini(struct radeon_device *rdev)
rdev->bios = NULL;
radeon_dummy_page_fini(rdev);
}
static void rv770_pcie_gen2_enable(struct radeon_device *rdev)
{
u32 link_width_cntl, lanes, speed_cntl, tmp;
u16 link_cntl2;
if (rdev->flags & RADEON_IS_IGP)
return;
if (!(rdev->flags & RADEON_IS_PCIE))
return;
/* x2 cards have a special sequence */
if (ASIC_IS_X2(rdev))
return;
/* advertise upconfig capability */
link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
link_width_cntl &= ~LC_UPCONFIGURE_DIS;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
if (link_width_cntl & LC_RENEGOTIATION_SUPPORT) {
lanes = (link_width_cntl & LC_LINK_WIDTH_RD_MASK) >> LC_LINK_WIDTH_RD_SHIFT;
link_width_cntl &= ~(LC_LINK_WIDTH_MASK |
LC_RECONFIG_ARC_MISSING_ESCAPE);
link_width_cntl |= lanes | LC_RECONFIG_NOW |
LC_RENEGOTIATE_EN | LC_UPCONFIGURE_SUPPORT;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
} else {
link_width_cntl |= LC_UPCONFIGURE_DIS;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
}
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
if ((speed_cntl & LC_OTHER_SIDE_EVER_SENT_GEN2) &&
(speed_cntl & LC_OTHER_SIDE_SUPPORTS_GEN2)) {
tmp = RREG32(0x541c);
WREG32(0x541c, tmp | 0x8);
WREG32(MM_CFGREGS_CNTL, MM_WR_TO_CFG_EN);
link_cntl2 = RREG16(0x4088);
link_cntl2 &= ~TARGET_LINK_SPEED_MASK;
link_cntl2 |= 0x2;
WREG16(0x4088, link_cntl2);
WREG32(MM_CFGREGS_CNTL, 0);
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl &= ~LC_TARGET_LINK_SPEED_OVERRIDE_EN;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl |= LC_CLR_FAILED_SPD_CHANGE_CNT;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl &= ~LC_CLR_FAILED_SPD_CHANGE_CNT;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
speed_cntl = RREG32_PCIE_P(PCIE_LC_SPEED_CNTL);
speed_cntl |= LC_GEN2_EN_STRAP;
WREG32_PCIE_P(PCIE_LC_SPEED_CNTL, speed_cntl);
} else {
link_width_cntl = RREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL);
/* XXX: only disable it if gen1 bridge vendor == 0x111d or 0x1106 */
if (1)
link_width_cntl |= LC_UPCONFIGURE_DIS;
else
link_width_cntl &= ~LC_UPCONFIGURE_DIS;
WREG32_PCIE_P(PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
}
}

38
drivers/gpu/drm/radeon/rv770d.h
View File

@ -360,4 +360,42 @@
#define D1GRPH_SECONDARY_SURFACE_ADDRESS_HIGH 0x691c
#define D2GRPH_SECONDARY_SURFACE_ADDRESS_HIGH 0x611c
/* PCIE link stuff */
#define PCIE_LC_TRAINING_CNTL 0xa1 /* PCIE_P */
#define PCIE_LC_LINK_WIDTH_CNTL 0xa2 /* PCIE_P */
# define LC_LINK_WIDTH_SHIFT 0
# define LC_LINK_WIDTH_MASK 0x7
# define LC_LINK_WIDTH_X0 0
# define LC_LINK_WIDTH_X1 1
# define LC_LINK_WIDTH_X2 2
# define LC_LINK_WIDTH_X4 3
# define LC_LINK_WIDTH_X8 4
# define LC_LINK_WIDTH_X16 6
# define LC_LINK_WIDTH_RD_SHIFT 4
# define LC_LINK_WIDTH_RD_MASK 0x70
# define LC_RECONFIG_ARC_MISSING_ESCAPE (1 << 7)
# define LC_RECONFIG_NOW (1 << 8)
# define LC_RENEGOTIATION_SUPPORT (1 << 9)
# define LC_RENEGOTIATE_EN (1 << 10)
# define LC_SHORT_RECONFIG_EN (1 << 11)
# define LC_UPCONFIGURE_SUPPORT (1 << 12)
# define LC_UPCONFIGURE_DIS (1 << 13)
#define PCIE_LC_SPEED_CNTL 0xa4 /* PCIE_P */
# define LC_GEN2_EN_STRAP (1 << 0)
# define LC_TARGET_LINK_SPEED_OVERRIDE_EN (1 << 1)
# define LC_FORCE_EN_HW_SPEED_CHANGE (1 << 5)
# define LC_FORCE_DIS_HW_SPEED_CHANGE (1 << 6)
# define LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_MASK (0x3 << 8)
# define LC_SPEED_CHANGE_ATTEMPTS_ALLOWED_SHIFT 3
# define LC_CURRENT_DATA_RATE (1 << 11)
# define LC_VOLTAGE_TIMER_SEL_MASK (0xf << 14)
# define LC_CLR_FAILED_SPD_CHANGE_CNT (1 << 21)
# define LC_OTHER_SIDE_EVER_SENT_GEN2 (1 << 23)
# define LC_OTHER_SIDE_SUPPORTS_GEN2 (1 << 24)
#define MM_CFGREGS_CNTL 0x544c
# define MM_WR_TO_CFG_EN (1 << 3)
#define LINK_CNTL2 0x88 /* F0 */
# define TARGET_LINK_SPEED_MASK (0xf << 0)
# define SELECTABLE_DEEMPHASIS (1 << 6)
#endif