Rather than defining our shadow tables as a list of individual
registers, provide them as a list of register ranges; we'll have some
ranges of multiple registers being added soon (and we already have a
couple adjacent registers that we can squash into a single range now).
This change also defines the table with hex literal values rather than
symbolic register names; since that's how the tables are defined in the
bspec, this change will make it easier to review the tables overall.
v2:
- Force signed comparison on range overlap sanity check
Signed-off-by: Matt Roper <matthew.d.ro...@intel.com>
---
drivers/gpu/drm/i915/gt/intel_workarounds.c | 13 +-
drivers/gpu/drm/i915/intel_uncore.c | 160 +++++++++---------
drivers/gpu/drm/i915/intel_uncore.h | 6 +
drivers/gpu/drm/i915/selftests/intel_uncore.c | 32 ++--
4 files changed, 108 insertions(+), 103 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
b/drivers/gpu/drm/i915/gt/intel_workarounds.c
index 9173df59821a..7558414bafb2 100644
--- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
+++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
@@ -1963,12 +1963,7 @@ void intel_engine_apply_workarounds(struct
intel_engine_cs *engine)
wa_list_apply(engine->gt, &engine->wa_list);
}
-struct mcr_range {
- u32 start;
- u32 end;
-};
-
-static const struct mcr_range mcr_ranges_gen8[] = {
+static const struct i915_range mcr_ranges_gen8[] = {
{ .start = 0x5500, .end = 0x55ff },
{ .start = 0x7000, .end = 0x7fff },
{ .start = 0x9400, .end = 0x97ff },
@@ -1977,7 +1972,7 @@ static const struct mcr_range mcr_ranges_gen8[] = {
{},
};
-static const struct mcr_range mcr_ranges_gen12[] = {
+static const struct i915_range mcr_ranges_gen12[] = {
{ .start = 0x8150, .end = 0x815f },
{ .start = 0x9520, .end = 0x955f },
{ .start = 0xb100, .end = 0xb3ff },
@@ -1986,7 +1981,7 @@ static const struct mcr_range mcr_ranges_gen12[] = {
{},
};
-static const struct mcr_range mcr_ranges_xehp[] = {
+static const struct i915_range mcr_ranges_xehp[] = {
{ .start = 0x4000, .end = 0x4aff },
{ .start = 0x5200, .end = 0x52ff },
{ .start = 0x5400, .end = 0x7fff },
@@ -2004,7 +1999,7 @@ static const struct mcr_range mcr_ranges_xehp[] = {
static bool mcr_range(struct drm_i915_private *i915, u32 offset)
{
- const struct mcr_range *mcr_ranges;
+ const struct i915_range *mcr_ranges;
int i;
if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50))
diff --git a/drivers/gpu/drm/i915/intel_uncore.c
b/drivers/gpu/drm/i915/intel_uncore.c
index ea910f7ee635..2cfbc16f7dee 100644
--- a/drivers/gpu/drm/i915/intel_uncore.c
+++ b/drivers/gpu/drm/i915/intel_uncore.c
@@ -946,101 +946,95 @@ static const struct intel_forcewake_range
__vlv_fw_ranges[] = {
find_fw_domain(uncore, offset)
/* *Must* be sorted by offset! See intel_shadow_table_check(). */
-static const i915_reg_t gen8_shadowed_regs[] = {
- RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
- GEN6_RPNSWREQ, /* 0xA008 */
- GEN6_RC_VIDEO_FREQ, /* 0xA00C */
- RING_TAIL(GEN6_BSD_RING_BASE), /* 0x12000 (base) */
- RING_TAIL(VEBOX_RING_BASE), /* 0x1a000 (base) */
- RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
+static const struct i915_range gen8_shadowed_regs[] = {
+ { .start = 0x2030, .end = 0x2030 },
+ { .start = 0xA008, .end = 0xA00C },
+ { .start = 0x12030, .end = 0x12030 },
+ { .start = 0x1a030, .end = 0x1a030 },
+ { .start = 0x22030, .end = 0x22030 },
/* TODO: Other registers are not yet used */
};
-static const i915_reg_t gen11_shadowed_regs[] = {
- RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
- RING_EXECLIST_CONTROL(RENDER_RING_BASE), /* 0x2550 */
- GEN6_RPNSWREQ, /* 0xA008 */
- GEN6_RC_VIDEO_FREQ, /* 0xA00C */
- RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
- RING_EXECLIST_CONTROL(BLT_RING_BASE), /* 0x22550 */
- RING_TAIL(GEN11_BSD_RING_BASE), /* 0x1C0000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD_RING_BASE), /* 0x1C0550 */
- RING_TAIL(GEN11_BSD2_RING_BASE), /* 0x1C4000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD2_RING_BASE), /* 0x1C4550 */
- RING_TAIL(GEN11_VEBOX_RING_BASE), /* 0x1C8000 (base) */
- RING_EXECLIST_CONTROL(GEN11_VEBOX_RING_BASE), /* 0x1C8550 */
- RING_TAIL(GEN11_BSD3_RING_BASE), /* 0x1D0000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD3_RING_BASE), /* 0x1D0550 */
- RING_TAIL(GEN11_BSD4_RING_BASE), /* 0x1D4000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD4_RING_BASE), /* 0x1D4550 */
- RING_TAIL(GEN11_VEBOX2_RING_BASE), /* 0x1D8000 (base) */
- RING_EXECLIST_CONTROL(GEN11_VEBOX2_RING_BASE), /* 0x1D8550 */
+static const struct i915_range gen11_shadowed_regs[] = {
+ { .start = 0x2030, .end = 0x2030 },
+ { .start = 0x2550, .end = 0x2550 },
+ { .start = 0xA008, .end = 0xA00C },
+ { .start = 0x22030, .end = 0x22030 },
+ { .start = 0x22550, .end = 0x22550 },
+ { .start = 0x1C0030, .end = 0x1C0030 },
+ { .start = 0x1C0550, .end = 0x1C0550 },
+ { .start = 0x1C4030, .end = 0x1C4030 },
+ { .start = 0x1C4550, .end = 0x1C4550 },
+ { .start = 0x1C8030, .end = 0x1C8030 },
+ { .start = 0x1C8550, .end = 0x1C8550 },
+ { .start = 0x1D0030, .end = 0x1D0030 },
+ { .start = 0x1D0550, .end = 0x1D0550 },
+ { .start = 0x1D4030, .end = 0x1D4030 },
+ { .start = 0x1D4550, .end = 0x1D4550 },
+ { .start = 0x1D8030, .end = 0x1D8030 },
+ { .start = 0x1D8550, .end = 0x1D8550 },
/* TODO: Other registers are not yet used */
};
-static const i915_reg_t gen12_shadowed_regs[] = {
- RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
- RING_EXECLIST_CONTROL(RENDER_RING_BASE), /* 0x2550 */
- GEN6_RPNSWREQ, /* 0xA008 */
- GEN6_RC_VIDEO_FREQ, /* 0xA00C */
- RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
- RING_EXECLIST_CONTROL(BLT_RING_BASE), /* 0x22550 */
- RING_TAIL(GEN11_BSD_RING_BASE), /* 0x1C0000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD_RING_BASE), /* 0x1C0550 */
- RING_TAIL(GEN11_BSD2_RING_BASE), /* 0x1C4000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD2_RING_BASE), /* 0x1C4550 */
- RING_TAIL(GEN11_VEBOX_RING_BASE), /* 0x1C8000 (base) */
- RING_EXECLIST_CONTROL(GEN11_VEBOX_RING_BASE), /* 0x1C8550 */
- RING_TAIL(GEN11_BSD3_RING_BASE), /* 0x1D0000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD3_RING_BASE), /* 0x1D0550 */
- RING_TAIL(GEN11_BSD4_RING_BASE), /* 0x1D4000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD4_RING_BASE), /* 0x1D4550 */
- RING_TAIL(GEN11_VEBOX2_RING_BASE), /* 0x1D8000 (base) */
- RING_EXECLIST_CONTROL(GEN11_VEBOX2_RING_BASE), /* 0x1D8550 */
+static const struct i915_range gen12_shadowed_regs[] = {
+ { .start = 0x2030, .end = 0x2030 },
+ { .start = 0x2550, .end = 0x2550 },
+ { .start = 0xA008, .end = 0xA00C },
+ { .start = 0x22030, .end = 0x22030 },
+ { .start = 0x22550, .end = 0x22550 },
+ { .start = 0x1C0030, .end = 0x1C0030 },
+ { .start = 0x1C0550, .end = 0x1C0550 },
+ { .start = 0x1C4030, .end = 0x1C4030 },
+ { .start = 0x1C4550, .end = 0x1C4550 },
+ { .start = 0x1C8030, .end = 0x1C8030 },
+ { .start = 0x1C8550, .end = 0x1C8550 },
+ { .start = 0x1D0030, .end = 0x1D0030 },
+ { .start = 0x1D0550, .end = 0x1D0550 },
+ { .start = 0x1D4030, .end = 0x1D4030 },
+ { .start = 0x1D4550, .end = 0x1D4550 },
+ { .start = 0x1D8030, .end = 0x1D8030 },
+ { .start = 0x1D8550, .end = 0x1D8550 },
/* TODO: Other registers are not yet used */
};
-static const i915_reg_t xehp_shadowed_regs[] = {
- RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
- RING_EXECLIST_CONTROL(RENDER_RING_BASE), /* 0x2550 */
- GEN6_RPNSWREQ, /* 0xA008 */
- GEN6_RC_VIDEO_FREQ, /* 0xA00C */
- RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
- RING_EXECLIST_CONTROL(BLT_RING_BASE), /* 0x22550 */
- RING_TAIL(GEN11_BSD_RING_BASE), /* 0x1C0000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD_RING_BASE), /* 0x1C0550 */
- RING_TAIL(GEN11_BSD2_RING_BASE), /* 0x1C4000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD2_RING_BASE), /* 0x1C4550 */
- RING_TAIL(GEN11_VEBOX_RING_BASE), /* 0x1C8000 (base) */
- RING_EXECLIST_CONTROL(GEN11_VEBOX_RING_BASE), /* 0x1C8550 */
- RING_TAIL(GEN11_BSD3_RING_BASE), /* 0x1D0000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD3_RING_BASE), /* 0x1D0550 */
- RING_TAIL(GEN11_BSD4_RING_BASE), /* 0x1D4000 (base) */
- RING_EXECLIST_CONTROL(GEN11_BSD4_RING_BASE), /* 0x1D4550 */
- RING_TAIL(GEN11_VEBOX2_RING_BASE), /* 0x1D8000 (base) */
- RING_EXECLIST_CONTROL(GEN11_VEBOX2_RING_BASE), /* 0x1D8550 */
- RING_TAIL(XEHP_BSD5_RING_BASE), /* 0x1E0000 (base) */
- RING_EXECLIST_CONTROL(XEHP_BSD5_RING_BASE), /* 0x1E0550 */
- RING_TAIL(XEHP_BSD6_RING_BASE), /* 0x1E4000 (base) */
- RING_EXECLIST_CONTROL(XEHP_BSD6_RING_BASE), /* 0x1E4550 */
- RING_TAIL(XEHP_VEBOX3_RING_BASE), /* 0x1E8000 (base) */
- RING_EXECLIST_CONTROL(XEHP_VEBOX3_RING_BASE), /* 0x1E8550 */
- RING_TAIL(XEHP_BSD7_RING_BASE), /* 0x1F0000 (base) */
- RING_EXECLIST_CONTROL(XEHP_BSD7_RING_BASE), /* 0x1F0550 */
- RING_TAIL(XEHP_BSD8_RING_BASE), /* 0x1F4000 (base) */
- RING_EXECLIST_CONTROL(XEHP_BSD8_RING_BASE), /* 0x1F4550 */
- RING_TAIL(XEHP_VEBOX4_RING_BASE), /* 0x1F8000 (base) */
- RING_EXECLIST_CONTROL(XEHP_VEBOX4_RING_BASE), /* 0x1F8550 */
+static const struct i915_range xehp_shadowed_regs[] = {
+ { .start = 0x2000, .end = 0x2030 },
+ { .start = 0x2550, .end = 0x2550 },
+ { .start = 0xA008, .end = 0xA00C },
+ { .start = 0x22030, .end = 0x22030 },
+ { .start = 0x22550, .end = 0x22550 },
+ { .start = 0x1C0030, .end = 0x1C0030 },
+ { .start = 0x1C0550, .end = 0x1C0550 },
+ { .start = 0x1C4030, .end = 0x1C4030 },
+ { .start = 0x1C4550, .end = 0x1C4550 },
+ { .start = 0x1C8030, .end = 0x1C8030 },
+ { .start = 0x1C8550, .end = 0x1C8550 },
+ { .start = 0x1D0030, .end = 0x1D0030 },
+ { .start = 0x1D0550, .end = 0x1D0550 },
+ { .start = 0x1D4030, .end = 0x1D4030 },
+ { .start = 0x1D4550, .end = 0x1D4550 },
+ { .start = 0x1D8030, .end = 0x1D8030 },
+ { .start = 0x1D8550, .end = 0x1D8550 },
+ { .start = 0x1E0030, .end = 0x1E0030 },
+ { .start = 0x1E0550, .end = 0x1E0550 },
+ { .start = 0x1E4030, .end = 0x1E4030 },
+ { .start = 0x1E4550, .end = 0x1E4550 },
+ { .start = 0x1E8030, .end = 0x1E8030 },
+ { .start = 0x1E8550, .end = 0x1E8550 },
+ { .start = 0x1F0030, .end = 0x1F0030 },
+ { .start = 0x1F0550, .end = 0x1F0550 },
+ { .start = 0x1F4030, .end = 0x1F4030 },
+ { .start = 0x1F4550, .end = 0x1F4550 },
+ { .start = 0x1F8030, .end = 0x1F8030 },
+ { .start = 0x1F8550, .end = 0x1F8550 },
/* TODO: Other registers are not yet used */
};
-static int mmio_reg_cmp(u32 key, const i915_reg_t *reg)
+static int mmio_range_cmp(u32 key, const struct i915_range *range)
{
- u32 offset = i915_mmio_reg_offset(*reg);
-
- if (key < offset)
+ if (key < range->start)
return -1;
- else if (key > offset)
+ else if (key > range->end)
return 1;
else
return 0;
@@ -1049,9 +1043,9 @@ static int mmio_reg_cmp(u32 key, const i915_reg_t *reg)
#define __is_X_shadowed(x) \
static bool is_##x##_shadowed(u32 offset) \
{ \
- const i915_reg_t *regs = x##_shadowed_regs; \
+ const struct i915_range *regs = x##_shadowed_regs; \
return BSEARCH(offset, regs, ARRAY_SIZE(x##_shadowed_regs), \
- mmio_reg_cmp); \
+ mmio_range_cmp); \
}
__is_X_shadowed(gen8)
diff --git a/drivers/gpu/drm/i915/intel_uncore.h
b/drivers/gpu/drm/i915/intel_uncore.h
index 3c0b0a8b5250..531665b08039 100644
--- a/drivers/gpu/drm/i915/intel_uncore.h
+++ b/drivers/gpu/drm/i915/intel_uncore.h
@@ -119,6 +119,12 @@ struct intel_forcewake_range {
enum forcewake_domains domains;
};
+/* Other register ranges (e.g., shadow tables, MCR tables, etc.) */
+struct i915_range {
+ u32 start;
+ u32 end;
+};
+
struct intel_uncore {
void __iomem *regs;
diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c
b/drivers/gpu/drm/i915/selftests/intel_uncore.c
index 720b60853f8b..d6a9c11afa23 100644
--- a/drivers/gpu/drm/i915/selftests/intel_uncore.c
+++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c
@@ -62,30 +62,40 @@ static int intel_fw_table_check(const struct
intel_forcewake_range *ranges,
static int intel_shadow_table_check(void)
{
struct {
- const i915_reg_t *regs;
+ const struct i915_range *regs;
unsigned int size;
- } reg_lists[] = {
+ } range_lists[] = {
{ gen8_shadowed_regs, ARRAY_SIZE(gen8_shadowed_regs) },
{ gen11_shadowed_regs, ARRAY_SIZE(gen11_shadowed_regs) },
{ gen12_shadowed_regs, ARRAY_SIZE(gen12_shadowed_regs) },
{ xehp_shadowed_regs, ARRAY_SIZE(xehp_shadowed_regs) },
};
- const i915_reg_t *reg;
+ const struct i915_range *range;
unsigned int i, j;
s32 prev;
- for (j = 0; j < ARRAY_SIZE(reg_lists); ++j) {
- reg = reg_lists[j].regs;
- for (i = 0, prev = -1; i < reg_lists[j].size; i++, reg++) {
- u32 offset = i915_mmio_reg_offset(*reg);
+ for (j = 0; j < ARRAY_SIZE(range_lists); ++j) {
+ range = range_lists[j].regs;
+ for (i = 0, prev = -1; i < range_lists[j].size; i++, range++) {
+ if (range->end < range->start) {
+ pr_err("%s: range[%d]:(%06x-%06x) has end
before start\n",
+ __func__, i, range->start, range->end);
+ return -EINVAL;
+ }
+
+ if (prev >= (s32)range->start) {
+ pr_err("%s: range[%d]:(%06x-%06x) is before end
of previous (%06x)\n",
+ __func__, i, range->start, range->end,
prev);
+ return -EINVAL;
+ }
- if (prev >= (s32)offset) {
- pr_err("%s: entry[%d]:(%x) is before previous
(%x)\n",
- __func__, i, offset, prev);
+ if (range->start % 4) {
+ pr_err("%s: range[%d]:(%06x-%06x) has
non-dword-aligned start\n",
+ __func__, i, range->start, range->end);
return -EINVAL;
}
- prev = offset;
+ prev = range->end;
}
}
--
2.25.4
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