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drm/i915/guc: New GuC scratch registers for Gen11

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Gen11 adds new set of scratch registers that can be used for MMIO
based Host-to-Guc communication. Due to limited number of these
registers it is expected that host will use them only for command
transport buffers (CTB) communication setup if one is available.

Bspec: 21044

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20190527183613.17076-10-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2019-05-27 18:36:05 +00:00 committed by Chris Wilson
parent 4a1f9dc119
commit 2d4ed3a988
2 changed files with 12 additions and 3 deletions
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12
drivers/gpu/drm/i915/intel_guc.c
View File

@ -56,9 +56,15 @@ void intel_guc_init_send_regs(struct intel_guc *guc)
enum forcewake_domains fw_domains = 0;
unsigned int i;
guc->send_regs.base = i915_mmio_reg_offset(SOFT_SCRATCH(0));
guc->send_regs.count = GUC_MAX_MMIO_MSG_LEN;
BUILD_BUG_ON(GUC_MAX_MMIO_MSG_LEN > SOFT_SCRATCH_COUNT);
if (HAS_GUC_CT(dev_priv) && INTEL_GEN(dev_priv) >= 11) {
guc->send_regs.base =
i915_mmio_reg_offset(GEN11_SOFT_SCRATCH(0));
guc->send_regs.count = GEN11_SOFT_SCRATCH_COUNT;
} else {
guc->send_regs.base = i915_mmio_reg_offset(SOFT_SCRATCH(0));
guc->send_regs.count = GUC_MAX_MMIO_MSG_LEN;
BUILD_BUG_ON(GUC_MAX_MMIO_MSG_LEN > SOFT_SCRATCH_COUNT);
}
for (i = 0; i < guc->send_regs.count; i++) {
fw_domains |= intel_uncore_forcewake_for_reg(&dev_priv->uncore,

3
drivers/gpu/drm/i915/intel_guc_reg.h
View File

@ -51,6 +51,9 @@
#define SOFT_SCRATCH(n) _MMIO(0xc180 + (n) * 4)
#define SOFT_SCRATCH_COUNT 16
#define GEN11_SOFT_SCRATCH(n) _MMIO(0x190240 + (n) * 4)
#define GEN11_SOFT_SCRATCH_COUNT 4
#define UOS_RSA_SCRATCH(i) _MMIO(0xc200 + (i) * 4)
#define UOS_RSA_SCRATCH_COUNT 64