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linux/drivers/gpu/drm/i915/soc/intel_dram.h

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drm/i915: split out intel_dram.[ch] from i915_drv.c The DRAM related routines are pretty isolated from the rest of the i915_drv.c, split it out to a separate file. Put the eDRAM stuff in the same bag, and rename the visible functions to have intel_dram_ prefix. Do some benign whitespace fixes and dev_priv -> i915 conversions while at it. Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200225111509.21879-1-jani.nikula@intel.com
2020-02-25 13:15:07 +02:00
/* SPDX-License-Identifier: MIT */
/*
* Copyright © 2020 Intel Corporation
*/
#ifndef __INTEL_DRAM_H__
#define __INTEL_DRAM_H__
drm/i915/dram: allocate struct dram_info dynamically Allocate struct drm_info dynamically, and convert the struct drm_i915_private and struct xe_device dram_info member into a const pointer. Move the struct definition to intel_dram.h, and keep it opaque to everyone not needing it. This also removes the duplication of the struct definition. Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com> Link: https://lore.kernel.org/r/73625095157346ea0e8614108c9b369208e5df66.1748337870.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2025-05-27 12:25:26 +03:00
#include <linux/types.h>
drm/i915: split out intel_dram.[ch] from i915_drv.c The DRAM related routines are pretty isolated from the rest of the i915_drv.c, split it out to a separate file. Put the eDRAM stuff in the same bag, and rename the visible functions to have intel_dram_ prefix. Do some benign whitespace fixes and dev_priv -> i915 conversions while at it. Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200225111509.21879-1-jani.nikula@intel.com
2020-02-25 13:15:07 +02:00
struct drm_i915_private;
drm/i915/dram: add accessor for struct dram_info and use it Add a function to get the (const) pointer to struct dram_info, and use that to obtain the pointer instead of poking at i915->dram_info directly. Clean up a couple of local variables while at it. Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com> Link: https://lore.kernel.org/r/4174edf649e2f6805dab6fd6ce2ec10f4e5f2498.1748337870.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2025-05-27 12:25:22 +03:00
struct drm_device;
drm/i915/dram: allocate struct dram_info dynamically Allocate struct drm_info dynamically, and convert the struct drm_i915_private and struct xe_device dram_info member into a const pointer. Move the struct definition to intel_dram.h, and keep it opaque to everyone not needing it. This also removes the duplication of the struct definition. Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com> Link: https://lore.kernel.org/r/73625095157346ea0e8614108c9b369208e5df66.1748337870.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2025-05-27 12:25:26 +03:00
struct dram_info {
bool wm_lv_0_adjust_needed;
u8 num_channels;
bool symmetric_memory;
enum intel_dram_type {
INTEL_DRAM_UNKNOWN,
INTEL_DRAM_DDR3,
INTEL_DRAM_DDR4,
INTEL_DRAM_LPDDR3,
INTEL_DRAM_LPDDR4,
INTEL_DRAM_DDR5,
INTEL_DRAM_LPDDR5,
INTEL_DRAM_GDDR,
INTEL_DRAM_GDDR_ECC,
__INTEL_DRAM_TYPE_MAX,
} type;
u8 num_qgv_points;
u8 num_psf_gv_points;
};
drm/i915: split out intel_dram.[ch] from i915_drv.c The DRAM related routines are pretty isolated from the rest of the i915_drv.c, split it out to a separate file. Put the eDRAM stuff in the same bag, and rename the visible functions to have intel_dram_ prefix. Do some benign whitespace fixes and dev_priv -> i915 conversions while at it. Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200225111509.21879-1-jani.nikula@intel.com
2020-02-25 13:15:07 +02:00
void intel_dram_edram_detect(struct drm_i915_private *i915);
drm/i915/dram: add return value and handling to intel_dram_detect() We'll want to start returning errors from intel_dram_detect(). As the first step, add the return value and error handling, even if we still only return 0. Do no functional changes, but leave a comment about whether we should bail out on dram detection failures. Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com> Link: https://lore.kernel.org/r/be2c31c459fb95d8161b719d499403eea5ec17b7.1748337870.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2025-05-27 12:25:25 +03:00
int intel_dram_detect(struct drm_i915_private *i915);
drm/i915: use i9xx_fsb_freq() for GT clock frequency Reuse i9xx_fsb_freq() for GT clock frequency initialization instead of depending on rawclk_freq. Note: If the init order was changed, we could use i915->fsb_freq directly. However, GT clock initialization is done in i915_driver_mmio_probe(), but intel_dram_detect() later in i915_driver_hw_probe(), with a dependency on intel_pcode_init(). Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/0678d8ec9772725b47d4fa5b14e3b3a34256d5cf.1718356614.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2024-06-14 12:22:37 +03:00
unsigned int i9xx_fsb_freq(struct drm_i915_private *i915);
drm/i915/dram: add accessor for struct dram_info and use it Add a function to get the (const) pointer to struct dram_info, and use that to obtain the pointer instead of poking at i915->dram_info directly. Clean up a couple of local variables while at it. Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com> Link: https://lore.kernel.org/r/4174edf649e2f6805dab6fd6ce2ec10f4e5f2498.1748337870.git.jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2025-05-27 12:25:22 +03:00
const struct dram_info *intel_dram_info(struct drm_device *drm);
drm/i915: split out intel_dram.[ch] from i915_drv.c The DRAM related routines are pretty isolated from the rest of the i915_drv.c, split it out to a separate file. Put the eDRAM stuff in the same bag, and rename the visible functions to have intel_dram_ prefix. Do some benign whitespace fixes and dev_priv -> i915 conversions while at it. Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200225111509.21879-1-jani.nikula@intel.com
2020-02-25 13:15:07 +02:00
#endif /* __INTEL_DRAM_H__ */
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