select DRM_DEBUG_MM if DRM=y
select DRM_DEBUG_MM_SELFTEST
select DRM_I915_SW_FENCE_DEBUG_OBJECTS
+ select DRM_I915_SELFTEST
default n
help
Choose this option to turn on extra driver debugging that may affect
Recommended for driver developers only.
If in doubt, say "N".
+
+config DRM_I915_SELFTEST
+ bool "Enable selftests upon driver load"
+ depends on DRM_I915
+ default n
+ select PRIME_NUMBERS
+ help
+ Choose this option to allow the driver to perform selftests upon
+ loading; also requires the i915.selftest=1 module parameter. To
+ exit the module after running the selftests (i.e. to prevent normal
+ module initialisation afterwards) use i915.selftest=-1.
+
+ Recommended for driver developers only.
+
+ If in doubt, say "N".
# Post-mortem debug and GPU hang state capture
i915-$(CONFIG_DRM_I915_CAPTURE_ERROR) += i915_gpu_error.o
+i915-$(CONFIG_DRM_I915_SELFTEST) += \
+ selftests/i915_random.o \
+ selftests/i915_selftest.o
# virtual gpu code
i915-y += i915_vgpu.o
#include <linux/vga_switcheroo.h>
#include "i915_drv.h"
+#include "i915_selftest.h"
#define GEN_DEFAULT_PIPEOFFSETS \
.pipe_offsets = { PIPE_A_OFFSET, PIPE_B_OFFSET, \
};
MODULE_DEVICE_TABLE(pci, pciidlist);
+static void i915_pci_remove(struct pci_dev *pdev)
+{
+ struct drm_device *dev = pci_get_drvdata(pdev);
+
+ i915_driver_unload(dev);
+ drm_dev_unref(dev);
+}
+
static int i915_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
{
struct intel_device_info *intel_info =
(struct intel_device_info *) ent->driver_data;
+ int err;
if (IS_ALPHA_SUPPORT(intel_info) && !i915.alpha_support) {
DRM_INFO("The driver support for your hardware in this kernel version is alpha quality\n"
if (vga_switcheroo_client_probe_defer(pdev))
return -EPROBE_DEFER;
- return i915_driver_load(pdev, ent);
-}
+ err = i915_driver_load(pdev, ent);
+ if (err)
+ return err;
-static void i915_pci_remove(struct pci_dev *pdev)
-{
- struct drm_device *dev = pci_get_drvdata(pdev);
+ err = i915_live_selftests(pdev);
+ if (err) {
+ i915_pci_remove(pdev);
+ return err > 0 ? -ENOTTY : err;
+ }
- i915_driver_unload(dev);
- drm_dev_unref(dev);
+ return 0;
}
static struct pci_driver i915_pci_driver = {
static int __init i915_init(void)
{
bool use_kms = true;
+ int err;
+
+ err = i915_mock_selftests();
+ if (err)
+ return err > 0 ? 0 : err;
/*
* Enable KMS by default, unless explicitly overriden by
--- /dev/null
+/*
+ * 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.
+ */
+
+#ifndef __I915_SELFTEST_H__
+#define __I915_SELFTEST_H__
+
+struct pci_dev;
+struct drm_i915_private;
+
+struct i915_selftest {
+ unsigned long timeout_jiffies;
+ unsigned int timeout_ms;
+ unsigned int random_seed;
+ int mock;
+ int live;
+};
+
+#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
+extern struct i915_selftest i915_selftest;
+
+int i915_mock_selftests(void);
+int i915_live_selftests(struct pci_dev *pdev);
+
+/* We extract the function declarations from i915_mock_selftests.h and
+ * i915_live_selftests.h Add your unit test declarations there!
+ *
+ * Mock unit tests are run very early upon module load, before the driver
+ * is probed. All hardware interactions, as well as other subsystems, must
+ * be "mocked".
+ *
+ * Live unit tests are run after the driver is loaded - all hardware
+ * interactions are real.
+ */
+#define selftest(name, func) int func(void);
+#include "selftests/i915_mock_selftests.h"
+#undef selftest
+#define selftest(name, func) int func(struct drm_i915_private *i915);
+#include "selftests/i915_live_selftests.h"
+#undef selftest
+
+struct i915_subtest {
+ int (*func)(void *data);
+ const char *name;
+};
+
+int __i915_subtests(const char *caller,
+ const struct i915_subtest *st,
+ unsigned int count,
+ void *data);
+#define i915_subtests(T, data) \
+ __i915_subtests(__func__, T, ARRAY_SIZE(T), data)
+
+#define SUBTEST(x) { x, #x }
+
+#define I915_SELFTEST_DECLARE(x) x
+#define I915_SELFTEST_ONLY(x) unlikely(x)
+
+#else /* !IS_ENABLED(CONFIG_DRM_I915_SELFTEST) */
+
+static inline int i915_mock_selftests(void) { return 0; }
+static inline int i915_live_selftests(struct pci_dev *pdev) { return 0; }
+
+#define I915_SELFTEST_DECLARE(x)
+#define I915_SELFTEST_ONLY(x) 0
+
+#endif
+
+/* Using the i915_selftest_ prefix becomes a little unwieldy with the helpers.
+ * Instead we use the igt_ shorthand, in reference to the intel-gpu-tools
+ * suite of uabi test cases (which includes a test runner for our selftests).
+ */
+
+#define IGT_TIMEOUT(name__) \
+ unsigned long name__ = jiffies + i915_selftest.timeout_jiffies
+
+__printf(2, 3)
+bool __igt_timeout(unsigned long timeout, const char *fmt, ...);
+
+#define igt_timeout(t, fmt, ...) \
+ __igt_timeout((t), KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
+
+#endif /* !__I915_SELFTEST_H__ */
--- /dev/null
+/* List each unit test as selftest(name, function)
+ *
+ * The name is used as both an enum and expanded as subtest__name to create
+ * a module parameter. It must be unique and legal for a C identifier.
+ *
+ * The function should be of type int function(void). It may be conditionally
+ * compiled using #if IS_ENABLED(DRM_I915_SELFTEST).
+ *
+ * Tests are executed in order by igt/drv_selftest
+ */
+selftest(sanitycheck, i915_live_sanitycheck) /* keep first (igt selfcheck) */
--- /dev/null
+/* List each unit test as selftest(name, function)
+ *
+ * The name is used as both an enum and expanded as subtest__name to create
+ * a module parameter. It must be unique and legal for a C identifier.
+ *
+ * The function should be of type int function(void). It may be conditionally
+ * compiled using #if IS_ENABLED(DRM_I915_SELFTEST).
+ *
+ * Tests are executed in order by igt/drv_selftest
+ */
+selftest(sanitycheck, i915_mock_sanitycheck) /* keep first (igt selfcheck) */
--- /dev/null
+/*
+ * 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 <linux/bitops.h>
+#include <linux/kernel.h>
+#include <linux/random.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "i915_random.h"
+
+static inline u32 i915_prandom_u32_max_state(u32 ep_ro, struct rnd_state *state)
+{
+ return upper_32_bits((u64)prandom_u32_state(state) * ep_ro);
+}
+
+void i915_random_reorder(unsigned int *order, unsigned int count,
+ struct rnd_state *state)
+{
+ unsigned int i, j;
+
+ for (i = 0; i < count; i++) {
+ BUILD_BUG_ON(sizeof(unsigned int) > sizeof(u32));
+ j = i915_prandom_u32_max_state(count, state);
+ swap(order[i], order[j]);
+ }
+}
+
+unsigned int *i915_random_order(unsigned int count, struct rnd_state *state)
+{
+ unsigned int *order, i;
+
+ order = kmalloc_array(count, sizeof(*order), GFP_TEMPORARY);
+ if (!order)
+ return order;
+
+ for (i = 0; i < count; i++)
+ order[i] = i;
+
+ i915_random_reorder(order, count, state);
+ return order;
+}
--- /dev/null
+/*
+ * 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.
+ *
+ */
+
+#ifndef __I915_SELFTESTS_RANDOM_H__
+#define __I915_SELFTESTS_RANDOM_H__
+
+#include <linux/random.h>
+
+#include "../i915_selftest.h"
+
+#define I915_RND_STATE_INITIALIZER(x) ({ \
+ struct rnd_state state__; \
+ prandom_seed_state(&state__, (x)); \
+ state__; \
+})
+
+#define I915_RND_STATE(name__) \
+ struct rnd_state name__ = I915_RND_STATE_INITIALIZER(i915_selftest.random_seed)
+
+#define I915_RND_SUBSTATE(name__, parent__) \
+ struct rnd_state name__ = I915_RND_STATE_INITIALIZER(prandom_u32_state(&(parent__)))
+
+unsigned int *i915_random_order(unsigned int count,
+ struct rnd_state *state);
+void i915_random_reorder(unsigned int *order,
+ unsigned int count,
+ struct rnd_state *state);
+
+#endif /* !__I915_SELFTESTS_RANDOM_H__ */
--- /dev/null
+/*
+ * 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 <linux/random.h>
+
+#include "../i915_drv.h"
+#include "../i915_selftest.h"
+
+struct i915_selftest i915_selftest __read_mostly = {
+ .timeout_ms = 1000,
+};
+
+int i915_mock_sanitycheck(void)
+{
+ pr_info(DRIVER_NAME ": %s() - ok!\n", __func__);
+ return 0;
+}
+
+int i915_live_sanitycheck(struct drm_i915_private *i915)
+{
+ pr_info("%s: %s() - ok!\n", i915->drm.driver->name, __func__);
+ return 0;
+}
+
+enum {
+#define selftest(name, func) mock_##name,
+#include "i915_mock_selftests.h"
+#undef selftest
+};
+
+enum {
+#define selftest(name, func) live_##name,
+#include "i915_live_selftests.h"
+#undef selftest
+};
+
+struct selftest {
+ bool enabled;
+ const char *name;
+ union {
+ int (*mock)(void);
+ int (*live)(struct drm_i915_private *);
+ };
+};
+
+#define selftest(n, f) [mock_##n] = { .name = #n, .mock = f },
+static struct selftest mock_selftests[] = {
+#include "i915_mock_selftests.h"
+};
+#undef selftest
+
+#define selftest(n, f) [live_##n] = { .name = #n, .live = f },
+static struct selftest live_selftests[] = {
+#include "i915_live_selftests.h"
+};
+#undef selftest
+
+/* Embed the line number into the parameter name so that we can order tests */
+#define selftest(n, func) selftest_0(n, func, param(n))
+#define param(n) __PASTE(igt__, __PASTE(__LINE__, __mock_##n))
+#define selftest_0(n, func, id) \
+module_param_named(id, mock_selftests[mock_##n].enabled, bool, 0400);
+#include "i915_mock_selftests.h"
+#undef selftest_0
+#undef param
+
+#define param(n) __PASTE(igt__, __PASTE(__LINE__, __live_##n))
+#define selftest_0(n, func, id) \
+module_param_named(id, live_selftests[live_##n].enabled, bool, 0400);
+#include "i915_live_selftests.h"
+#undef selftest_0
+#undef param
+#undef selftest
+
+static void set_default_test_all(struct selftest *st, unsigned int count)
+{
+ unsigned int i;
+
+ for (i = 0; i < count; i++)
+ if (st[i].enabled)
+ return;
+
+ for (i = 0; i < count; i++)
+ st[i].enabled = true;
+}
+
+static int __run_selftests(const char *name,
+ struct selftest *st,
+ unsigned int count,
+ void *data)
+{
+ int err = 0;
+
+ while (!i915_selftest.random_seed)
+ i915_selftest.random_seed = get_random_int();
+
+ i915_selftest.timeout_jiffies =
+ i915_selftest.timeout_ms ?
+ msecs_to_jiffies_timeout(i915_selftest.timeout_ms) :
+ MAX_SCHEDULE_TIMEOUT;
+
+ set_default_test_all(st, count);
+
+ pr_info(DRIVER_NAME ": Performing %s selftests with st_random_seed=0x%x st_timeout=%u\n",
+ name, i915_selftest.random_seed, i915_selftest.timeout_ms);
+
+ /* Tests are listed in order in i915_*_selftests.h */
+ for (; count--; st++) {
+ if (!st->enabled)
+ continue;
+
+ cond_resched();
+ if (signal_pending(current))
+ return -EINTR;
+
+ pr_debug(DRIVER_NAME ": Running %s\n", st->name);
+ if (data)
+ err = st->live(data);
+ else
+ err = st->mock();
+ if (err == -EINTR && !signal_pending(current))
+ err = 0;
+ if (err)
+ break;
+ }
+
+ if (WARN(err > 0 || err == -ENOTTY,
+ "%s returned %d, conflicting with selftest's magic values!\n",
+ st->name, err))
+ err = -1;
+
+ return err;
+}
+
+#define run_selftests(x, data) \
+ __run_selftests(#x, x##_selftests, ARRAY_SIZE(x##_selftests), data)
+
+int i915_mock_selftests(void)
+{
+ int err;
+
+ if (!i915_selftest.mock)
+ return 0;
+
+ err = run_selftests(mock, NULL);
+ if (err) {
+ i915_selftest.mock = err;
+ return err;
+ }
+
+ if (i915_selftest.mock < 0) {
+ i915_selftest.mock = -ENOTTY;
+ return 1;
+ }
+
+ return 0;
+}
+
+int i915_live_selftests(struct pci_dev *pdev)
+{
+ int err;
+
+ if (!i915_selftest.live)
+ return 0;
+
+ err = run_selftests(live, to_i915(pci_get_drvdata(pdev)));
+ if (err) {
+ i915_selftest.live = err;
+ return err;
+ }
+
+ if (i915_selftest.live < 0) {
+ i915_selftest.live = -ENOTTY;
+ return 1;
+ }
+
+ return 0;
+}
+
+int __i915_subtests(const char *caller,
+ const struct i915_subtest *st,
+ unsigned int count,
+ void *data)
+{
+ int err;
+
+ for (; count--; st++) {
+ cond_resched();
+ if (signal_pending(current))
+ return -EINTR;
+
+ pr_debug(DRIVER_NAME ": Running %s/%s\n", caller, st->name);
+ err = st->func(data);
+ if (err && err != -EINTR) {
+ pr_err(DRIVER_NAME "/%s: %s failed with error %d\n",
+ caller, st->name, err);
+ return err;
+ }
+ }
+
+ return 0;
+}
+
+bool __igt_timeout(unsigned long timeout, const char *fmt, ...)
+{
+ va_list va;
+
+ if (!signal_pending(current)) {
+ cond_resched();
+ if (time_before(jiffies, timeout))
+ return false;
+ }
+
+ if (fmt) {
+ va_start(va, fmt);
+ vprintk(fmt, va);
+ va_end(va);
+ }
+
+ return true;
+}
+
+module_param_named(st_random_seed, i915_selftest.random_seed, uint, 0400);
+module_param_named(st_timeout, i915_selftest.timeout_ms, uint, 0400);
+
+module_param_named_unsafe(mock_selftests, i915_selftest.mock, int, 0400);
+MODULE_PARM_DESC(mock_selftests, "Run selftests before loading, using mock hardware (0:disabled [default], 1:run tests then load driver, -1:run tests then exit module)");
+
+module_param_named_unsafe(live_selftests, i915_selftest.live, int, 0400);
+MODULE_PARM_DESC(live_selftests, "Run selftests after driver initialisation on the live system (0:disabled [default], 1:run tests then continue, -1:run tests then exit module)");
fi
if /sbin/modprobe -q i915 mock_selftests=-1; then
+ /sbin/modprobe -q -r i915
echo "drivers/gpu/i915: ok"
else
echo "drivers/gpu/i915: [FAIL]"
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