From 26e7a2a17971400fee4fcacc0132439c043fd0e6 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 13 Feb 2017 17:15:33 +0000 Subject: [PATCH] drm/i915: Move uncore selfchecks to live selftest infrastructure Now that the kselftest infrastructure exists, put it to use and add to it the existing consistency checks on the fw register lookup tables. v2: s/tabke/table/ Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Reviewed-by: Matthew Auld Link: http://patchwork.freedesktop.org/patch/msgid/20170213171558.20942-22-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/intel_uncore.c | 52 +-------- .../drm/i915/selftests/i915_live_selftests.h | 1 + drivers/gpu/drm/i915/selftests/intel_uncore.c | 100 ++++++++++++++++++ 3 files changed, 105 insertions(+), 48 deletions(-) create mode 100644 drivers/gpu/drm/i915/selftests/intel_uncore.c diff --git a/drivers/gpu/drm/i915/intel_uncore.c b/drivers/gpu/drm/i915/intel_uncore.c index 1ff8fd9911d7..441c51fd9746 100644 --- a/drivers/gpu/drm/i915/intel_uncore.c +++ b/drivers/gpu/drm/i915/intel_uncore.c @@ -642,33 +642,6 @@ find_fw_domain(struct drm_i915_private *dev_priv, u32 offset) return entry->domains; } -static void -intel_fw_table_check(struct drm_i915_private *dev_priv) -{ - const struct intel_forcewake_range *ranges; - unsigned int num_ranges; - s32 prev; - unsigned int i; - - if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG)) - return; - - ranges = dev_priv->uncore.fw_domains_table; - if (!ranges) - return; - - num_ranges = dev_priv->uncore.fw_domains_table_entries; - - for (i = 0, prev = -1; i < num_ranges; i++, ranges++) { - WARN_ON_ONCE(IS_GEN9(dev_priv) && - (prev + 1) != (s32)ranges->start); - WARN_ON_ONCE(prev >= (s32)ranges->start); - prev = ranges->start; - WARN_ON_ONCE(prev >= (s32)ranges->end); - prev = ranges->end; - } -} - #define GEN_FW_RANGE(s, e, d) \ { .start = (s), .end = (e), .domains = (d) } @@ -707,23 +680,6 @@ static const i915_reg_t gen8_shadowed_regs[] = { /* TODO: Other registers are not yet used */ }; -static void intel_shadow_table_check(void) -{ - const i915_reg_t *reg = gen8_shadowed_regs; - s32 prev; - u32 offset; - unsigned int i; - - if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG)) - return; - - for (i = 0, prev = -1; i < ARRAY_SIZE(gen8_shadowed_regs); i++, reg++) { - offset = i915_mmio_reg_offset(*reg); - WARN_ON_ONCE(prev >= (s32)offset); - prev = offset; - } -} - static int mmio_reg_cmp(u32 key, const i915_reg_t *reg) { u32 offset = i915_mmio_reg_offset(*reg); @@ -1384,10 +1340,6 @@ void intel_uncore_init(struct drm_i915_private *dev_priv) break; } - intel_fw_table_check(dev_priv); - if (INTEL_GEN(dev_priv) >= 8) - intel_shadow_table_check(); - i915_check_and_clear_faults(dev_priv); } #undef ASSIGN_WRITE_MMIO_VFUNCS @@ -1905,3 +1857,7 @@ intel_uncore_forcewake_for_reg(struct drm_i915_private *dev_priv, return fw_domains; } + +#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) +#include "selftests/intel_uncore.c" +#endif diff --git a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h index 8f0c207dbe22..be7892d05290 100644 --- a/drivers/gpu/drm/i915/selftests/i915_live_selftests.h +++ b/drivers/gpu/drm/i915/selftests/i915_live_selftests.h @@ -9,6 +9,7 @@ * Tests are executed in order by igt/drv_selftest */ selftest(sanitycheck, i915_live_sanitycheck) /* keep first (igt selfcheck) */ +selftest(uncore, intel_uncore_live_selftests) selftest(requests, i915_gem_request_live_selftests) selftest(objects, i915_gem_object_live_selftests) selftest(coherency, i915_gem_coherency_live_selftests) diff --git a/drivers/gpu/drm/i915/selftests/intel_uncore.c b/drivers/gpu/drm/i915/selftests/intel_uncore.c new file mode 100644 index 000000000000..5f7bd5c9428f --- /dev/null +++ b/drivers/gpu/drm/i915/selftests/intel_uncore.c @@ -0,0 +1,100 @@ +/* + * Copyright © 2016 Intel Corporation + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS + * IN THE SOFTWARE. + * + */ + +#include "../i915_selftest.h" + +static int intel_fw_table_check(struct drm_i915_private *i915) +{ + const struct intel_forcewake_range *ranges; + unsigned int num_ranges, i; + s32 prev; + + ranges = i915->uncore.fw_domains_table; + if (!ranges) + return 0; + + num_ranges = i915->uncore.fw_domains_table_entries; + for (i = 0, prev = -1; i < num_ranges; i++, ranges++) { + /* Check that the table is watertight */ + if (IS_GEN9(i915) && (prev + 1) != (s32)ranges->start) { + pr_err("%s: entry[%d]:(%x, %x) is not watertight to previous (%x)\n", + __func__, i, ranges->start, ranges->end, prev); + return -EINVAL; + } + + /* Check that the table never goes backwards */ + if (prev >= (s32)ranges->start) { + pr_err("%s: entry[%d]:(%x, %x) is less than the previous (%x)\n", + __func__, i, ranges->start, ranges->end, prev); + return -EINVAL; + } + + /* Check that the entry is valid */ + if (ranges->start >= ranges->end) { + pr_err("%s: entry[%d]:(%x, %x) has negative length\n", + __func__, i, ranges->start, ranges->end); + return -EINVAL; + } + + prev = ranges->end; + } + + return 0; +} + +static int intel_shadow_table_check(void) +{ + const i915_reg_t *reg = gen8_shadowed_regs; + unsigned int i; + s32 prev; + + for (i = 0, prev = -1; i < ARRAY_SIZE(gen8_shadowed_regs); i++, reg++) { + u32 offset = i915_mmio_reg_offset(*reg); + + if (prev >= (s32)offset) { + pr_err("%s: entry[%d]:(%x) is before previous (%x)\n", + __func__, i, offset, prev); + return -EINVAL; + } + + prev = offset; + } + + return 0; +} + +int intel_uncore_live_selftests(struct drm_i915_private *i915) +{ + int err; + + err = intel_fw_table_check(i915); + if (err) + return err; + + err = intel_shadow_table_check(); + if (err) + return err; + + return 0; +} -- 2.39.5