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drm/radeon/kms: implement reading active PCIE lanes on R600+ 

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Rafał Miłecki 2010-02-18 20:24:28 +00:00 committed by Dave Airlie
parent 08ff2a7a7a
commit aa5120d2ef
4 changed files with 10 additions and 3 deletions
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5
drivers/gpu/drm/radeon/r300.c
View File

@ -554,7 +554,10 @@ int rv370_get_pcie_lanes(struct radeon_device *rdev)
/* FIXME wait for idle */
link_width_cntl = RREG32_PCIE(RADEON_PCIE_LC_LINK_WIDTH_CNTL);
if (rdev->family < CHIP_R600)
link_width_cntl = RREG32_PCIE(RADEON_PCIE_LC_LINK_WIDTH_CNTL);
else
link_width_cntl = RREG32_PCIE_P(RADEON_PCIE_LC_LINK_WIDTH_CNTL);
switch ((link_width_cntl & RADEON_PCIE_LC_LINK_WIDTH_RD_MASK) >> RADEON_PCIE_LC_LINK_WIDTH_RD_SHIFT) {
case RADEON_PCIE_LC_LINK_WIDTH_X0:

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

@ -1014,6 +1014,8 @@ static inline void r100_mm_wreg(struct radeon_device *rdev, uint32_t reg, uint32
#define WREG32_MC(reg, v) rdev->mc_wreg(rdev, (reg), (v))
#define RREG32_PCIE(reg) rv370_pcie_rreg(rdev, (reg))
#define WREG32_PCIE(reg, v) rv370_pcie_wreg(rdev, (reg), (v))
#define RREG32_PCIE_P(reg) rdev->pciep_rreg(rdev, (reg))
#define WREG32_PCIE_P(reg, v) rdev->pciep_wreg(rdev, (reg), (v))
#define WREG32_P(reg, val, mask) \
do { \
uint32_t tmp_ = RREG32(reg); \

4
drivers/gpu/drm/radeon/radeon_asic.h
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@ -626,7 +626,7 @@ static struct radeon_asic r600_asic = {
.set_engine_clock = &radeon_atom_set_engine_clock,
.get_memory_clock = &radeon_atom_get_memory_clock,
.set_memory_clock = &radeon_atom_set_memory_clock,
.get_pcie_lanes = NULL,
.get_pcie_lanes = &rv370_get_pcie_lanes,
.set_pcie_lanes = NULL,
.set_clock_gating = NULL,
.set_surface_reg = r600_set_surface_reg,
@ -672,7 +672,7 @@ static struct radeon_asic rv770_asic = {
.set_engine_clock = &radeon_atom_set_engine_clock,
.get_memory_clock = &radeon_atom_get_memory_clock,
.set_memory_clock = &radeon_atom_set_memory_clock,
.get_pcie_lanes = NULL,
.get_pcie_lanes = &rv370_get_pcie_lanes,
.set_pcie_lanes = NULL,
.set_clock_gating = &radeon_atom_set_clock_gating,
.set_surface_reg = r600_set_surface_reg,

2
drivers/gpu/drm/radeon/radeon_pm.c
View File

@ -442,6 +442,8 @@ static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
seq_printf(m, "default memory clock: %u0 kHz\n", rdev->clock.default_mclk);
if (rdev->asic->get_memory_clock)
seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
if (rdev->asic->get_pcie_lanes)
seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
return 0;
}