Commit b294657d authored by Changbin Du's avatar Changbin Du Committed by Zhenyu Wang

drm/i915/gvt: Add new 64K entry type

Add a new entry type GTT_TYPE_PPGTT_PTE_64K_ENTRY. 64K entry is very
different from 2M/1G entry. 64K entry is controlled by IPS bit in upper
PDE. To leverage the current logic, I take IPS bit as 'PSE' for PTE
level. Which means, 64K entries can also processed by get_pse_type().

v2: Make it bisectable.
Signed-off-by: default avatarChangbin Du <changbin.du@intel.com>
Signed-off-by: Zhenyu Wang's avatarZhenyu Wang <zhenyuw@linux.intel.com>
parent 57c8a484
......@@ -216,16 +216,22 @@ static struct gtt_type_table_entry gtt_type_table[] = {
GTT_TYPE_PPGTT_PDE_PT,
GTT_TYPE_PPGTT_PTE_PT,
GTT_TYPE_PPGTT_PTE_2M_ENTRY),
/* We take IPS bit as 'PSE' for PTE level. */
GTT_TYPE_TABLE_ENTRY(GTT_TYPE_PPGTT_PTE_PT,
GTT_TYPE_PPGTT_PTE_4K_ENTRY,
GTT_TYPE_PPGTT_PTE_PT,
GTT_TYPE_INVALID,
GTT_TYPE_INVALID),
GTT_TYPE_PPGTT_PTE_64K_ENTRY),
GTT_TYPE_TABLE_ENTRY(GTT_TYPE_PPGTT_PTE_4K_ENTRY,
GTT_TYPE_PPGTT_PTE_4K_ENTRY,
GTT_TYPE_PPGTT_PTE_PT,
GTT_TYPE_INVALID,
GTT_TYPE_INVALID),
GTT_TYPE_PPGTT_PTE_64K_ENTRY),
GTT_TYPE_TABLE_ENTRY(GTT_TYPE_PPGTT_PTE_64K_ENTRY,
GTT_TYPE_PPGTT_PTE_4K_ENTRY,
GTT_TYPE_PPGTT_PTE_PT,
GTT_TYPE_INVALID,
GTT_TYPE_PPGTT_PTE_64K_ENTRY),
GTT_TYPE_TABLE_ENTRY(GTT_TYPE_PPGTT_PTE_2M_ENTRY,
GTT_TYPE_PPGTT_PDE_ENTRY,
GTT_TYPE_PPGTT_PDE_PT,
......@@ -339,6 +345,7 @@ static inline int gtt_set_entry64(void *pt,
#define ADDR_1G_MASK GENMASK_ULL(GTT_HAW - 1, 30)
#define ADDR_2M_MASK GENMASK_ULL(GTT_HAW - 1, 21)
#define ADDR_64K_MASK GENMASK_ULL(GTT_HAW - 1, 16)
#define ADDR_4K_MASK GENMASK_ULL(GTT_HAW - 1, 12)
static unsigned long gen8_gtt_get_pfn(struct intel_gvt_gtt_entry *e)
......@@ -349,6 +356,8 @@ static unsigned long gen8_gtt_get_pfn(struct intel_gvt_gtt_entry *e)
pfn = (e->val64 & ADDR_1G_MASK) >> PAGE_SHIFT;
else if (e->type == GTT_TYPE_PPGTT_PTE_2M_ENTRY)
pfn = (e->val64 & ADDR_2M_MASK) >> PAGE_SHIFT;
else if (e->type == GTT_TYPE_PPGTT_PTE_64K_ENTRY)
pfn = (e->val64 & ADDR_64K_MASK) >> PAGE_SHIFT;
else
pfn = (e->val64 & ADDR_4K_MASK) >> PAGE_SHIFT;
return pfn;
......@@ -362,6 +371,9 @@ static void gen8_gtt_set_pfn(struct intel_gvt_gtt_entry *e, unsigned long pfn)
} else if (e->type == GTT_TYPE_PPGTT_PTE_2M_ENTRY) {
e->val64 &= ~ADDR_2M_MASK;
pfn &= (ADDR_2M_MASK >> PAGE_SHIFT);
} else if (e->type == GTT_TYPE_PPGTT_PTE_64K_ENTRY) {
e->val64 &= ~ADDR_64K_MASK;
pfn &= (ADDR_64K_MASK >> PAGE_SHIFT);
} else {
e->val64 &= ~ADDR_4K_MASK;
pfn &= (ADDR_4K_MASK >> PAGE_SHIFT);
......@@ -380,6 +392,10 @@ static bool gen8_gtt_test_pse(struct intel_gvt_gtt_entry *e)
if (!(e->val64 & _PAGE_PSE))
return false;
/* We don't support 64K entry yet, will remove this later. */
if (get_pse_type(e->type) == GTT_TYPE_PPGTT_PTE_64K_ENTRY)
return false;
e->type = get_pse_type(e->type);
return true;
}
......@@ -871,9 +887,10 @@ static int ppgtt_invalidate_spt(struct intel_vgpu_ppgtt_spt *spt)
gvt_vdbg_mm("invalidate 4K entry\n");
ppgtt_invalidate_pte(spt, &e);
break;
case GTT_TYPE_PPGTT_PTE_64K_ENTRY:
case GTT_TYPE_PPGTT_PTE_2M_ENTRY:
case GTT_TYPE_PPGTT_PTE_1G_ENTRY:
WARN(1, "GVT doesn't support 2M/1GB page\n");
WARN(1, "GVT doesn't support 64K/2M/1GB page\n");
continue;
case GTT_TYPE_PPGTT_PML4_ENTRY:
case GTT_TYPE_PPGTT_PDP_ENTRY:
......@@ -970,9 +987,10 @@ static int ppgtt_populate_shadow_entry(struct intel_vgpu *vgpu,
case GTT_TYPE_PPGTT_PTE_4K_ENTRY:
gvt_vdbg_mm("shadow 4K gtt entry\n");
break;
case GTT_TYPE_PPGTT_PTE_64K_ENTRY:
case GTT_TYPE_PPGTT_PTE_2M_ENTRY:
case GTT_TYPE_PPGTT_PTE_1G_ENTRY:
gvt_vgpu_err("GVT doesn't support 2M/1GB entry\n");
gvt_vgpu_err("GVT doesn't support 64K/2M/1GB entry\n");
return -EINVAL;
default:
GEM_BUG_ON(1);
......
......@@ -95,6 +95,7 @@ typedef enum {
GTT_TYPE_GGTT_PTE,
GTT_TYPE_PPGTT_PTE_4K_ENTRY,
GTT_TYPE_PPGTT_PTE_64K_ENTRY,
GTT_TYPE_PPGTT_PTE_2M_ENTRY,
GTT_TYPE_PPGTT_PTE_1G_ENTRY,
......
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