diff options
| -rw-r--r-- | drivers/gpu/drm/xe/regs/xe_gt_regs.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_device.c | 30 |
2 files changed, 33 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h index 5f5a72e9d0d8..f5bf4c6d1761 100644 --- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h +++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h @@ -162,6 +162,9 @@ #define XEHP_SQCM XE_REG_MCR(0x8724) #define EN_32B_ACCESS REG_BIT(30) +#define XE2_FLAT_CCS_BASE_RANGE_LOWER XE_REG_MCR(0x8800) +#define XE2_FLAT_CCS_ENABLE REG_BIT(0) + #define GSCPSMI_BASE XE_REG(0x880c) #define MIRROR_FUSE3 XE_REG(0x9118) diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c index 2e0b2e40d8f3..82e3705b88cd 100644 --- a/drivers/gpu/drm/xe/xe_device.c +++ b/drivers/gpu/drm/xe/xe_device.c @@ -15,6 +15,7 @@ #include <drm/drm_print.h> #include <drm/xe_drm.h> +#include "regs/xe_gt_regs.h" #include "regs/xe_regs.h" #include "xe_bo.h" #include "xe_debugfs.h" @@ -26,6 +27,7 @@ #include "xe_exec.h" #include "xe_ggtt.h" #include "xe_gt.h" +#include "xe_gt_mcr.h" #include "xe_irq.h" #include "xe_mmio.h" #include "xe_module.h" @@ -401,6 +403,30 @@ int xe_device_probe_early(struct xe_device *xe) return 0; } +static int xe_device_set_has_flat_ccs(struct xe_device *xe) +{ + u32 reg; + int err; + + if (GRAPHICS_VER(xe) < 20 || !xe->info.has_flat_ccs) + return 0; + + struct xe_gt *gt = xe_root_mmio_gt(xe); + + err = xe_force_wake_get(gt_to_fw(gt), XE_FW_GT); + if (err) + return err; + + reg = xe_gt_mcr_unicast_read_any(gt, XE2_FLAT_CCS_BASE_RANGE_LOWER); + xe->info.has_flat_ccs = (reg & XE2_FLAT_CCS_ENABLE); + + if (!xe->info.has_flat_ccs) + drm_dbg(&xe->drm, + "Flat CCS has been disabled in bios, May lead to performance impact"); + + return xe_force_wake_put(gt_to_fw(gt), XE_FW_GT); +} + int xe_device_probe(struct xe_device *xe) { struct xe_tile *tile; @@ -456,6 +482,10 @@ int xe_device_probe(struct xe_device *xe) goto err_irq_shutdown; } + err = xe_device_set_has_flat_ccs(xe); + if (err) + return err; + err = xe_mmio_probe_vram(xe); if (err) goto err_irq_shutdown; |