Re: [PATCH v2 06/15] drm/i915: Rename the DSM/GSM registers

[Andrzej Hajda <andrzej.hajda@intel.com>]

On 15.12.2023 11:59, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> 
> 0x108100 and 0x1080c0 have been around since snb. Rename the
> defines appropriately.
> 
> Cc: Paz Zcharya <pazz@chromium.org>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>

Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>

Regards
Andrzej

> ---
>   drivers/gpu/drm/i915/gem/i915_gem_stolen.c  | 4 ++--
>   drivers/gpu/drm/i915/gt/intel_ggtt.c        | 2 +-
>   drivers/gpu/drm/i915/gt/intel_region_lmem.c | 2 +-
>   drivers/gpu/drm/i915/i915_reg.h             | 7 ++++---
>   4 files changed, 8 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
> index 252fe5cd6ede..6185a5f73a48 100644
> --- a/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
> +++ b/drivers/gpu/drm/i915/gem/i915_gem_stolen.c
> @@ -935,7 +935,7 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
>   		GEM_BUG_ON((dsm_base + dsm_size) > lmem_size);
>   	} else {
>   		/* Use DSM base address instead for stolen memory */
> -		dsm_base = intel_uncore_read64(uncore, GEN12_DSMBASE) & GEN12_BDSM_MASK;
> +		dsm_base = intel_uncore_read64(uncore, GEN6_DSMBASE) & GEN11_BDSM_MASK;
>   		if (WARN_ON(lmem_size < dsm_base))
>   			return ERR_PTR(-ENODEV);
>   		dsm_size = ALIGN_DOWN(lmem_size - dsm_base, SZ_1M);
> @@ -948,7 +948,7 @@ i915_gem_stolen_lmem_setup(struct drm_i915_private *i915, u16 type,
>   		 * Normally this would not work but on MTL the system firmware
>   		 * should have relaxed the access permissions sufficiently.
>   		 */
> -		io_start = intel_uncore_read64(uncore, GEN12_DSMBASE) & GEN12_BDSM_MASK;
> +		io_start = intel_uncore_read64(uncore, GEN6_DSMBASE) & GEN11_BDSM_MASK;
>   		io_size = dsm_size;
>   	} else if (pci_resource_len(pdev, GEN12_LMEM_BAR) < lmem_size) {
>   		io_start = 0;
> diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c b/drivers/gpu/drm/i915/gt/intel_ggtt.c
> index ab71d74ec426..05c5525e7e2d 100644
> --- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
> +++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
> @@ -1167,7 +1167,7 @@ static int ggtt_probe_common(struct i915_ggtt *ggtt, u64 size)
>   	 * should have relaxed the access permissions sufficiently.
>   	 */
>   	if (IS_METEORLAKE(i915))
> -		phys_addr = intel_uncore_read64(uncore, GEN12_GSMBASE) & GEN12_BDSM_MASK;
> +		phys_addr = intel_uncore_read64(uncore, GEN6_GSMBASE) & GEN11_BDSM_MASK;
>   	else
>   		phys_addr = pci_resource_start(pdev, GEN4_GTTMMADR_BAR) + gen6_gttadr_offset(i915);
>   
> diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
> index af357089da6e..51bb27e10a4f 100644
> --- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
> +++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
> @@ -240,7 +240,7 @@ static struct intel_memory_region *setup_lmem(struct intel_gt *gt)
>   		lmem_size -= tile_stolen;
>   	} else {
>   		/* Stolen starts from GSMBASE without CCS */
> -		lmem_size = intel_uncore_read64(&i915->uncore, GEN12_GSMBASE);
> +		lmem_size = intel_uncore_read64(&i915->uncore, GEN6_GSMBASE);
>   	}
>   
>   	i915_resize_lmem_bar(i915, lmem_size);
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 27dc903f0553..b54d62952a53 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -6314,9 +6314,10 @@ enum skl_power_gate {
>   #define   GMS_MASK			REG_GENMASK(15, 8)
>   #define   GGMS_MASK			REG_GENMASK(7, 6)
>   
> -#define GEN12_GSMBASE			_MMIO(0x108100)
> -#define GEN12_DSMBASE			_MMIO(0x1080C0)
> -#define   GEN12_BDSM_MASK		REG_GENMASK64(63, 20)
> +#define GEN6_GSMBASE			_MMIO(0x108100)
> +#define GEN6_DSMBASE			_MMIO(0x1080C0)
> +#define   GEN6_BDSM_MASK		REG_GENMASK64(31, 20)
> +#define   GEN11_BDSM_MASK		REG_GENMASK64(63, 20)
>   
>   #define XEHP_CLOCK_GATE_DIS		_MMIO(0x101014)
>   #define   SGSI_SIDECLK_DIS		REG_BIT(17)