On Fri, Aug 01, 2014 at 08:46:25PM +0300, Mika Kuoppala wrote:
> To check that static workarounds are set and stay after init,
> hang and suspend/restore. Checks are currently provided for ivb
> and bdw only.
>
> Signed-off-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
> ---
> lib/intel_chipset.h | 4 +
> lib/intel_workaround.h | 142 +++++++++++++++++++++++++++
> tests/Makefile.sources | 1 +
> tests/drv_workarounds.c | 244 +++++++++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 391 insertions(+)
> create mode 100644 lib/intel_workaround.h
> create mode 100644 tests/drv_workarounds.c
>
> diff --git a/lib/intel_chipset.h b/lib/intel_chipset.h
> index 404c632..5a03f2b 100644
> --- a/lib/intel_chipset.h
> +++ b/lib/intel_chipset.h
> @@ -263,6 +263,10 @@ void intel_check_pch(void);
> (devid) == PCI_CHIP_IVYBRIDGE_S || \
> (devid) == PCI_CHIP_IVYBRIDGE_S_GT2)
>
> +#define IS_IVB_GT1(devid) ((devid) == PCI_CHIP_IVYBRIDGE_GT1 || \
> + (devid) == PCI_CHIP_IVYBRIDGE_M_GT1 || \
> + (devid) == PCI_CHIP_IVYBRIDGE_S)
> +
> #define IS_VALLEYVIEW(devid) ((devid) == PCI_CHIP_VALLEYVIEW_PO || \
> (devid) == PCI_CHIP_VALLEYVIEW_1 || \
> (devid) == PCI_CHIP_VALLEYVIEW_2 || \
> diff --git a/lib/intel_workaround.h b/lib/intel_workaround.h
> new file mode 100644
> index 0000000..87e3a44
> --- /dev/null
> +++ b/lib/intel_workaround.h
> @@ -0,0 +1,142 @@
> +/*
> + * Copyright © 2013,2014 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.
> + *
> + * Authors:
> + * Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
> + *
> + */
> +
> +#ifndef INTEL_WORKAROUNDS
> +#define INTEL_WORKAROUNDS
> +
> +#include "intel_chipset.h"
> +#include "intel_io.h"
> +#include "igt_core.h"
> +
> +static int __wa_devid = 0;
> +
> +struct wa {
> + const char * const name;
> + int (*f)(const int devid);
> +};
> +
> +static void wa_init(const int devid)
> +{
> + __wa_devid = devid;
> + intel_register_access_init(intel_get_pci_device(), 0);
> +}
> +
> +static void wa_fini(void)
> +{
> + __wa_devid = 0;
> + intel_register_access_fini();
> +}
> +
> +static int wa_check(const struct wa *wa)
> +{
> + igt_assert(__wa_devid);
> + igt_assert(wa->name);
> + igt_assert(wa->f);
> + return wa->f(__wa_devid);
> +}
> +
> +#define WA(_name) /* _name */ static int _name##_fun(const int devid); \
> + static const struct wa _name = \
> + { #_name, _name##_fun }; \
> + static int _name##_fun(const int devid)
> +
> +#define wa_assert_m(reg, val, mask) { \
> + unsigned int x; \
> + igt_assert(mask); \
> + x = intel_register_read(reg); \
> + if (((x) & (mask)) != (val)) { \
> + igt_warn("a:0x%08x r:0x%08x m:0%08x v:0%08x\n", reg, x, mask, val); \
> + return 1; \
> + } \
> + }
> +
> +#define wa_assert(reg, val) wa_assert_m(reg, val, 0xffffffff)
> +#define wa_assert_bit_set(reg, bit) wa_assert_m(reg, (1 << bit), (1 << bit))
> +#define wa_assert_bit_clr(reg, bit) wa_assert_m(reg, 0, (1 << bit))
> +
> +#define WA_MASK(_name, reg, val, mask) \
> + WA(_name) { \
> + wa_assert_m(reg, val, mask); \
> + return 0; \
> + }
> +
> +#define WA_BIT_SET(_name, reg, bit) WA_MASK(_name, reg, (1 << bit), (1 << bit))
> +#define WA_BIT_CLR(_name, reg, bit) WA_MASK(_name, reg, 0, (1 << bit))
> +
> +
> +/* *** ivb workarounds ***************************************/
> +WA(WaDisablePSDDualDispatchEnable) {
> + if (IS_IVB_GT1(devid))
> + wa_assert_bit_set(0xe100, 3);
> +
> + return 0;
> +}
> +
> +WA_BIT_SET(WaFbcAsynchFlipDisableFbcQueue, 0x42000, 22);
> +WA_BIT_SET(WaDisableEarlyCull, 0x2090, 10);
> +WA_MASK(WaDisableBackToBackFlipFix, 0x4200c, 1 << 2 | 1 << 5, 1 << 2 | 1 << 5);
> +WA_BIT_SET(WaDisableRHWOptimizationForRenderHang, 0x7010, 10);
> +
> +WA(WaApplyL3ControlAndL3ChickenMode) {
> + wa_assert_m(0xb01c, 0x3C47FF8C, 0xFFFFFFFF);
> + wa_assert_m(0xb030, 0x20000000, 0xFFFFFFFF);
> +
> + wa_assert_bit_set(0xe4f4, 0);
> + if (!IS_IVB_GT1(devid))
> + wa_assert_bit_set(0xf4f4, 0);
> +
> + return 0;
> +}
> +
> +WA_BIT_CLR(WaForceL3Serialization, 0xb034, 27);
> +WA_BIT_SET(WaDisableRCZUnitClockGating_ivb, 0x9404, 13);
> +WA_BIT_SET(WaCatErrorRejectionIssue, 0x9030, 11);
> +WA_BIT_SET(WaDisable4x2SubspanOptimization, 0x7004, 6);
> +WA_MASK(WaVSThreadDispatchOverride, 0x20a0, 0, (1 << 4) | (1 << 12) | (1 << 16));
> +/*************************************************************/
> +
> +/* *** bdw workarounds ***************************************/
> +WA_BIT_SET(WaDisablePartialInstShootdown, 0xe4f0, 8);
> +WA_BIT_SET(WaDisableThreadStallDopClockGating, 0xe4f0, 5);
> +WA_BIT_SET(WaDisableDopClockGating, 0xe4f4, 0);
> +WA_BIT_SET(WaSwitchSolVfFArbitrationPriority, 0x4090, 6);
> +WA_BIT_SET(WaPsrDPAMaskVBlankInSRD, 0x42080, 15);
> +
> +WA(WaPsrDPRSUnmaskVBlankInSRD) {
> + wa_assert_bit_set(0x420b0, 0);
> + wa_assert_bit_set(0x420b4, 0);
> + wa_assert_bit_set(0x420b8, 0);
> + return 0;
> +}
> +
> +WA_BIT_CLR(WaVSRefCountFullforceMissDisable, 0x20a0, 15);
> +WA_BIT_CLR(WaDSRefCountFullforceMissDisable, 0x20a0, 19);
> +WA_BIT_SET(WaDisableSDEUnitClockGating, 0x9430, 14);
> +WA_BIT_SET(Wa4x4STCOptimizationDisable, 0x7004, 6);
> +/*************************************************************/
> +
> +#endif
> diff --git a/tests/Makefile.sources b/tests/Makefile.sources
> index 0eb9369..e87f81d 100644
> --- a/tests/Makefile.sources
> +++ b/tests/Makefile.sources
> @@ -18,6 +18,7 @@ TESTS_progs_M = \
> core_get_client_auth \
> drv_suspend \
> drv_hangman \
> + drv_workarounds \
> gem_bad_reloc \
> gem_basic \
> gem_caching \
> diff --git a/tests/drv_workarounds.c b/tests/drv_workarounds.c
> new file mode 100644
> index 0000000..9afce23
> --- /dev/null
> +++ b/tests/drv_workarounds.c
> @@ -0,0 +1,244 @@
> +/*
> + * Copyright © 2014 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.
> + *
> + * Authors:
> + * Mika Kuoppala <mika.kuoppala@xxxxxxxxx>
> + *
> + */
> +
> +#include <string.h>
> +#include "drm.h"
> +#include "ioctl_wrappers.h"
> +#include "drmtest.h"
> +#include "intel_io.h"
> +#include "igt_debugfs.h"
> +#include "igt_aux.h"
> +#include "intel_workaround.h"
> +
> +static const struct wa *ivb_workarounds[] = {
> + &WaDisableEarlyCull,
> + &WaDisableBackToBackFlipFix,
> + &WaDisablePSDDualDispatchEnable,
> + &WaDisableRHWOptimizationForRenderHang,
> + &WaApplyL3ControlAndL3ChickenMode,
> + &WaForceL3Serialization,
> + &WaDisableRCZUnitClockGating_ivb,
> + &WaCatErrorRejectionIssue,
> + &WaVSRefCountFullforceMissDisable,
> + &WaDisable4x2SubspanOptimization,
> + &WaVSThreadDispatchOverride,
> + NULL,
> +};
> +
> +static const struct wa *bdw_workarounds[] = {
> + &WaDisablePartialInstShootdown,
> + &WaDisableThreadStallDopClockGating,
> + &WaDisableDopClockGating,
> + &WaSwitchSolVfFArbitrationPriority,
> + &WaPsrDPAMaskVBlankInSRD,
> + &WaPsrDPRSUnmaskVBlankInSRD,
> + &WaVSRefCountFullforceMissDisable,
> + &WaDSRefCountFullforceMissDisable,
> + &WaDisableSDEUnitClockGating,
> + &Wa4x4STCOptimizationDisable,
> + NULL,
> +};
This tastes a bit like a maintaince hell burden - we're pretty much
guaranteed to get out of sync with these lists. My idea would be to only
have a list of w/a relevant registers (maybe with a mask to cut away stuff
that can change) and simply compare them after module reload,
suspend/resume, runtime pm and gpu reset (they all matter a bit
differently).
Bonus points if we can generate that list of registers from the kernel
sources. But I don't really see an easy way to do this, so definitely a
follow-up task.
-Daniel
> +
> +static void strip_arch(const char* testname, const char *arch, char *tmp, int l)
> +{
> + char *p;
> + int bytes;
> +
> + p = strstr(testname, arch);
> + if (p)
> + bytes = p - testname - 1;
> + else
> + bytes = strlen(testname);
> +
> + if (bytes < 0)
> + bytes = 0;
> +
> + if (bytes >= (l-1))
> + bytes = l-1;
> +
> + strncpy(tmp, testname, bytes);
> + tmp[bytes] = '\0';
> +}
> +
> +static int devid;
> +
> +static int check_workarounds(const struct wa **workarounds, const char *arch)
> +{
> + const struct wa **p;
> + char tmpname[256];
> + int fail_count = 0, wa_count = 0;
> + int ret;
> + p = workarounds;
> +
> + wa_init(devid);
> +
> + while(*p) {
> + wa_count++;
> + ret = wa_check(*p);
> + strip_arch((*p)->name, arch, tmpname, sizeof(tmpname));
> + printf("%-8s %s:%s\n", ret ? "FAIL" : "OK", tmpname, arch);
> + if (ret)
> + fail_count++;
> + p++;
> + }
> +
> + if (fail_count) {
> + printf("%d workarounds tested, %d passed, %d failed\n",
> + wa_count, wa_count - fail_count, fail_count);
> + }
> +
> + wa_fini();
> +
> + return fail_count;
> +}
> +
> +#define do_check(was, arch) igt_assert(check_workarounds(was, arch) == 0)
> +
> +typedef enum { SIMPLE, HANG, SUSPEND } test_type;
> +
> +static int exec(int fd, uint32_t handle)
> +{
> + struct drm_i915_gem_execbuffer2 execbuf;
> + struct drm_i915_gem_exec_object2 gem_exec[1];
> + int ret = 0;
> +
> + gem_exec[0].handle = handle;
> + gem_exec[0].relocation_count = 0;
> + gem_exec[0].relocs_ptr = 0;
> + gem_exec[0].alignment = 0;
> + gem_exec[0].offset = 0;
> + gem_exec[0].flags = 0;
> + gem_exec[0].rsvd1 = 0;
> + gem_exec[0].rsvd2 = 0;
> +
> + execbuf.buffers_ptr = (uintptr_t)gem_exec;
> + execbuf.buffer_count = 1;
> + execbuf.batch_start_offset = 0;
> + execbuf.batch_len = 8;
> + execbuf.cliprects_ptr = 0;
> + execbuf.num_cliprects = 0;
> + execbuf.DR1 = 0;
> + execbuf.DR4 = 0;
> + execbuf.flags = I915_EXEC_RENDER;
> + i915_execbuffer2_set_context_id(execbuf, 0);
> + execbuf.rsvd2 = 0;
> +
> + ret = drmIoctl(fd,
> + DRM_IOCTL_I915_GEM_EXECBUFFER2,
> + &execbuf);
> +
> + gem_sync(fd, handle);
> +
> + return ret;
> +}
> +
> +static void exec_nop(void)
> +{
> + uint32_t batch[2] = {MI_BATCH_BUFFER_END};
> + uint32_t handle;
> + int fd;
> +
> + fd = drm_open_any();
> +
> + handle = gem_create(fd, 4096);
> + gem_write(fd, handle, 0, batch, sizeof(batch));
> +
> + igt_assert(exec(fd, handle) == 0);
> +}
> +
> +static void do_hang(void)
> +{
> + int timeout = 300;
> +
> + igt_set_stop_rings(STOP_RING_DEFAULTS);
> + exec_nop();
> + while (timeout-- && igt_get_stop_rings())
> + usleep(1000 * 100);
> +}
> +
> +static void do_test(const struct wa **workarounds, const char *arch, test_type tt)
> +{
> + do_check(workarounds, arch);
> +
> + switch (tt) {
> + case SIMPLE:
> + return;
> +
> + case HANG:
> + do_hang();
> + break;
> +
> + case SUSPEND:
> + igt_system_suspend_autoresume();
> + break;
> + }
> +
> + do_check(workarounds, arch);
> +}
> +
> +static void wa_check_ivb_t(test_type t)
> +{
> + igt_require(intel_gen(devid) == 7);
> + do_test(&ivb_workarounds[0], "ivb", t);
> +}
> +
> +static void wa_check_bdw_t(test_type t)
> +{
> + igt_require(IS_BROADWELL(devid));
> + do_test(&bdw_workarounds[0], "bdw", t);
> +}
> +
> +static struct subtypes {
> + test_type type;
> + const char *name;
> +} stypes[] = {
> + { SIMPLE, "simple" },
> + { HANG, "hang" },
> + { SUSPEND, "suspend" },
> +};
> +
> +#define WA_TESTS(x) { for (int i = 0; i < sizeof(stypes)/sizeof(struct subtypes); i++) { \
> + igt_subtest_f("wa-%s-%s", #x, stypes[i].name) \
> + wa_check_ ## x ## _t(stypes[i].type); \
> + } \
> + }
> +
> +igt_main
> +{
> + igt_fixture {
> + int fd;
> +
> + fd = drm_open_any();
> + devid = intel_get_drm_devid(fd);
> + close(fd);
> +
> + igt_skip_on(!IS_INTEL(devid));
> + }
> +
> + WA_TESTS(ivb);
> + WA_TESTS(bdw);
> +}
> --
> 1.7.9.5
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
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