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-rw-r--r--drivers/gpu/drm/radeon/r300.c5
-rw-r--r--drivers/gpu/drm/radeon/r600.c118
-rw-r--r--drivers/gpu/drm/radeon/radeon.h8
-rw-r--r--drivers/gpu/drm/radeon/radeon_asic.c14
-rw-r--r--drivers/gpu/drm/radeon/radeon_asic.h2
-rw-r--r--drivers/gpu/drm/radeon/radeon_reg.h9
6 files changed, 145 insertions, 11 deletions
diff --git a/drivers/gpu/drm/radeon/r300.c b/drivers/gpu/drm/radeon/r300.c
index 23fee54c3b75..fae5e709f270 100644
--- a/drivers/gpu/drm/radeon/r300.c
+++ b/drivers/gpu/drm/radeon/r300.c
@@ -558,10 +558,7 @@ int rv370_get_pcie_lanes(struct radeon_device *rdev)
/* FIXME wait for idle */
- 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);
+ link_width_cntl = RREG32_PCIE(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:
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 279794c391e9..60ad8c03081a 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -3531,3 +3531,121 @@ void r600_ioctl_wait_idle(struct radeon_device *rdev, struct radeon_bo *bo)
} else
WREG32(R_005480_HDP_MEM_COHERENCY_FLUSH_CNTL, 0x1);
}
+
+void r600_set_pcie_lanes(struct radeon_device *rdev, int lanes)
+{
+ u32 link_width_cntl, mask, target_reg;
+
+ 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;
+
+ /* FIXME wait for idle */
+
+ switch (lanes) {
+ case 0:
+ mask = RADEON_PCIE_LC_LINK_WIDTH_X0;
+ break;
+ case 1:
+ mask = RADEON_PCIE_LC_LINK_WIDTH_X1;
+ break;
+ case 2:
+ mask = RADEON_PCIE_LC_LINK_WIDTH_X2;
+ break;
+ case 4:
+ mask = RADEON_PCIE_LC_LINK_WIDTH_X4;
+ break;
+ case 8:
+ mask = RADEON_PCIE_LC_LINK_WIDTH_X8;
+ break;
+ case 12:
+ mask = RADEON_PCIE_LC_LINK_WIDTH_X12;
+ break;
+ case 16:
+ default:
+ mask = RADEON_PCIE_LC_LINK_WIDTH_X16;
+ break;
+ }
+
+ link_width_cntl = RREG32_PCIE_P(RADEON_PCIE_LC_LINK_WIDTH_CNTL);
+
+ if ((link_width_cntl & RADEON_PCIE_LC_LINK_WIDTH_RD_MASK) ==
+ (mask << RADEON_PCIE_LC_LINK_WIDTH_RD_SHIFT))
+ return;
+
+ if (link_width_cntl & R600_PCIE_LC_UPCONFIGURE_DIS)
+ return;
+
+ link_width_cntl &= ~(RADEON_PCIE_LC_LINK_WIDTH_MASK |
+ RADEON_PCIE_LC_RECONFIG_NOW |
+ R600_PCIE_LC_RENEGOTIATE_EN |
+ R600_PCIE_LC_RECONFIG_ARC_MISSING_ESCAPE);
+ link_width_cntl |= mask;
+
+ WREG32_PCIE_P(RADEON_PCIE_LC_LINK_WIDTH_CNTL, link_width_cntl);
+
+ /* some northbridges can renegotiate the link rather than requiring
+ * a complete re-config.
+ * e.g., AMD 780/790 northbridges (pci ids: 0x5956, 0x5957, 0x5958, etc.)
+ */
+ if (link_width_cntl & R600_PCIE_LC_RENEGOTIATION_SUPPORT)
+ link_width_cntl |= R600_PCIE_LC_RENEGOTIATE_EN | R600_PCIE_LC_UPCONFIGURE_SUPPORT;
+ else
+ link_width_cntl |= R600_PCIE_LC_RECONFIG_ARC_MISSING_ESCAPE;
+
+ WREG32_PCIE_P(RADEON_PCIE_LC_LINK_WIDTH_CNTL, (link_width_cntl |
+ RADEON_PCIE_LC_RECONFIG_NOW));
+
+ if (rdev->family >= CHIP_RV770)
+ target_reg = R700_TARGET_AND_CURRENT_PROFILE_INDEX;
+ else
+ target_reg = R600_TARGET_AND_CURRENT_PROFILE_INDEX;
+
+ /* wait for lane set to complete */
+ link_width_cntl = RREG32(target_reg);
+ while (link_width_cntl == 0xffffffff)
+ link_width_cntl = RREG32(target_reg);
+
+}
+
+int r600_get_pcie_lanes(struct radeon_device *rdev)
+{
+ u32 link_width_cntl;
+
+ if (rdev->flags & RADEON_IS_IGP)
+ return 0;
+
+ if (!(rdev->flags & RADEON_IS_PCIE))
+ return 0;
+
+ /* x2 cards have a special sequence */
+ if (ASIC_IS_X2(rdev))
+ return 0;
+
+ /* FIXME wait for idle */
+
+ 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:
+ return 0;
+ case RADEON_PCIE_LC_LINK_WIDTH_X1:
+ return 1;
+ case RADEON_PCIE_LC_LINK_WIDTH_X2:
+ return 2;
+ case RADEON_PCIE_LC_LINK_WIDTH_X4:
+ return 4;
+ case RADEON_PCIE_LC_LINK_WIDTH_X8:
+ return 8;
+ case RADEON_PCIE_LC_LINK_WIDTH_X16:
+ default:
+ return 16;
+ }
+}
+
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index aff8080026a1..e9fb64c1e20b 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -1317,6 +1317,14 @@ void r100_pll_errata_after_index(struct radeon_device *rdev);
(rdev->family == CHIP_RV410) || \
(rdev->family == CHIP_RS400) || \
(rdev->family == CHIP_RS480))
+#define ASIC_IS_X2(rdev) ((rdev->ddev->pdev->device == 0x9441) || \
+ (rdev->ddev->pdev->device == 0x9443) || \
+ (rdev->ddev->pdev->device == 0x944B) || \
+ (rdev->ddev->pdev->device == 0x9506) || \
+ (rdev->ddev->pdev->device == 0x9509) || \
+ (rdev->ddev->pdev->device == 0x950F) || \
+ (rdev->ddev->pdev->device == 0x689C) || \
+ (rdev->ddev->pdev->device == 0x689D))
#define ASIC_IS_AVIVO(rdev) ((rdev->family >= CHIP_RS600))
#define ASIC_IS_DCE2(rdev) ((rdev->family == CHIP_RS600) || \
(rdev->family == CHIP_RS690) || \
diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 3d73fe484f42..53c62404795d 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -94,7 +94,7 @@ static void radeon_register_accessor_init(struct radeon_device *rdev)
rdev->mc_rreg = &rs600_mc_rreg;
rdev->mc_wreg = &rs600_mc_wreg;
}
- if ((rdev->family >= CHIP_R600) && (rdev->family <= CHIP_RV740)) {
+ if ((rdev->family >= CHIP_R600) && (rdev->family <= CHIP_HEMLOCK)) {
rdev->pciep_rreg = &r600_pciep_rreg;
rdev->pciep_wreg = &r600_pciep_wreg;
}
@@ -631,8 +631,8 @@ 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 = &rv370_get_pcie_lanes,
- .set_pcie_lanes = NULL,
+ .get_pcie_lanes = &r600_get_pcie_lanes,
+ .set_pcie_lanes = &r600_set_pcie_lanes,
.set_clock_gating = NULL,
.set_surface_reg = r600_set_surface_reg,
.clear_surface_reg = r600_clear_surface_reg,
@@ -725,8 +725,8 @@ 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 = &rv370_get_pcie_lanes,
- .set_pcie_lanes = NULL,
+ .get_pcie_lanes = &r600_get_pcie_lanes,
+ .set_pcie_lanes = &r600_set_pcie_lanes,
.set_clock_gating = &radeon_atom_set_clock_gating,
.set_surface_reg = r600_set_surface_reg,
.clear_surface_reg = r600_clear_surface_reg,
@@ -772,8 +772,8 @@ static struct radeon_asic evergreen_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,
- .set_pcie_lanes = NULL,
+ .get_pcie_lanes = &r600_get_pcie_lanes,
+ .set_pcie_lanes = &r600_set_pcie_lanes,
.set_clock_gating = NULL,
.set_surface_reg = r600_set_surface_reg,
.clear_surface_reg = r600_clear_surface_reg,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 4970eda1bd41..9ac71b8d1b9d 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -284,6 +284,8 @@ extern void r600_pm_misc(struct radeon_device *rdev);
extern void r600_pm_init_profile(struct radeon_device *rdev);
extern void rs780_pm_init_profile(struct radeon_device *rdev);
extern void r600_pm_get_dynpm_state(struct radeon_device *rdev);
+extern void r600_set_pcie_lanes(struct radeon_device *rdev, int lanes);
+extern int r600_get_pcie_lanes(struct radeon_device *rdev);
/*
* rv770,rv730,rv710,rv740
diff --git a/drivers/gpu/drm/radeon/radeon_reg.h b/drivers/gpu/drm/radeon/radeon_reg.h
index 0a310b7f71c3..3369ce984af1 100644
--- a/drivers/gpu/drm/radeon/radeon_reg.h
+++ b/drivers/gpu/drm/radeon/radeon_reg.h
@@ -320,6 +320,15 @@
# define RADEON_PCIE_LC_RECONFIG_NOW (1 << 8)
# define RADEON_PCIE_LC_RECONFIG_LATER (1 << 9)
# define RADEON_PCIE_LC_SHORT_RECONFIG_EN (1 << 10)
+# define R600_PCIE_LC_RECONFIG_ARC_MISSING_ESCAPE (1 << 7)
+# define R600_PCIE_LC_RENEGOTIATION_SUPPORT (1 << 9)
+# define R600_PCIE_LC_RENEGOTIATE_EN (1 << 10)
+# define R600_PCIE_LC_SHORT_RECONFIG_EN (1 << 11)
+# define R600_PCIE_LC_UPCONFIGURE_SUPPORT (1 << 12)
+# define R600_PCIE_LC_UPCONFIGURE_DIS (1 << 13)
+
+#define R600_TARGET_AND_CURRENT_PROFILE_INDEX 0x70c
+#define R700_TARGET_AND_CURRENT_PROFILE_INDEX 0x66c
#define RADEON_CACHE_CNTL 0x1724
#define RADEON_CACHE_LINE 0x0f0c /* PCI */
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.