forked from Minki/linux
1629224324
Intended for upstream testing so that we can still exercise the LMEM plumbing and !i915_ggtt_has_aperture paths. Smoke tested on Skull Canyon device. This works by allocating an intel_memory_region for a reserved portion of system memory, which we treat like LMEM. For the LMEMBAR we steal the aperture and 1:1 it map to the stolen region. To enable simply set the i915 modparam fake_lmem_start= on the kernel cmdline with the start of reserved region(see memmap=). The size of the region we can use is determined by the size of the mappable aperture, so the size of reserved region should be >= mappable_end. For now we only enable for the selftests. Depends on CONFIG_DRM_I915_UNSTABLE being enabled. eg. memmap=2G$16G i915.fake_lmem_start=0x400000000 v2: make fake_lmem_start an i915 modparam Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com> Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20191030173320.8850-1-matthew.auld@intel.com
97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
/*
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* Copyright © 2015 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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*/
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#ifndef _I915_PARAMS_H_
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#define _I915_PARAMS_H_
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#include <linux/bitops.h>
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#include <linux/cache.h> /* for __read_mostly */
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struct drm_printer;
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#define ENABLE_GUC_SUBMISSION BIT(0)
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#define ENABLE_GUC_LOAD_HUC BIT(1)
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/*
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* Invoke param, a function-like macro, for each i915 param, with arguments:
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*
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* param(type, name, value)
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*
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* type: parameter type, one of {bool, int, unsigned int, char *}
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* name: name of the parameter
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* value: initial/default value of the parameter
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*/
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#define I915_PARAMS_FOR_EACH(param) \
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param(char *, vbt_firmware, NULL) \
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param(int, modeset, -1) \
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param(int, lvds_channel_mode, 0) \
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param(int, panel_use_ssc, -1) \
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param(int, vbt_sdvo_panel_type, -1) \
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param(int, enable_dc, -1) \
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param(int, enable_fbc, -1) \
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param(int, enable_psr, -1) \
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param(int, disable_power_well, -1) \
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param(int, enable_ips, 1) \
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param(int, invert_brightness, 0) \
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param(int, enable_guc, 0) \
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param(int, guc_log_level, -1) \
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param(char *, guc_firmware_path, NULL) \
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param(char *, huc_firmware_path, NULL) \
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param(char *, dmc_firmware_path, NULL) \
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param(int, mmio_debug, -IS_ENABLED(CONFIG_DRM_I915_DEBUG_MMIO)) \
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param(int, edp_vswing, 0) \
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param(int, reset, 3) \
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param(unsigned int, inject_probe_failure, 0) \
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param(int, fastboot, -1) \
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param(int, enable_dpcd_backlight, 0) \
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param(char *, force_probe, CONFIG_DRM_I915_FORCE_PROBE) \
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param(unsigned long, fake_lmem_start, 0) \
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/* leave bools at the end to not create holes */ \
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param(bool, alpha_support, IS_ENABLED(CONFIG_DRM_I915_ALPHA_SUPPORT)) \
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param(bool, enable_hangcheck, true) \
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param(bool, prefault_disable, false) \
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param(bool, load_detect_test, false) \
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param(bool, force_reset_modeset_test, false) \
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param(bool, error_capture, true) \
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param(bool, disable_display, false) \
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param(bool, verbose_state_checks, true) \
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param(bool, nuclear_pageflip, false) \
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param(bool, enable_dp_mst, true) \
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param(bool, enable_gvt, false)
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#define MEMBER(T, member, ...) T member;
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struct i915_params {
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I915_PARAMS_FOR_EACH(MEMBER);
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};
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#undef MEMBER
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extern struct i915_params i915_modparams __read_mostly;
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void i915_params_dump(const struct i915_params *params, struct drm_printer *p);
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void i915_params_copy(struct i915_params *dest, const struct i915_params *src);
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void i915_params_free(struct i915_params *params);
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#endif
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