diff options
| author | Siva Mullati <siva.mullati@intel.com> | 2021-12-08 07:12:15 +0300 |
|---|---|---|
| committer | Lucas De Marchi <lucas.demarchi@intel.com> | 2021-12-09 00:26:14 +0300 |
| commit | 67c430bbaae153433f76807d07b8298ac4714822 (patch) | |
| tree | 9314384b21a1af645534144c260d80ebe97b455a /drivers/gpu/drm/i915/i915_mm.h | |
| parent | c9ee950a2ca55ea0f63d0893f796b2eb089e7900 (diff) | |
| download | linux-67c430bbaae153433f76807d07b8298ac4714822.tar.xz | |
drm/i915: Skip remap_io_mapping() for non-x86 platforms
Only hw that supports mappable aperture would hit this path
vm_fault_gtt/vm_fault_tmm, So we never hit this function
remap_io_mapping() in discrete, So skip this code for non-x86
architectures.
v2: use IS_ENABLED () instead of #if defined
v3: move function prototypes from i915_drv.h to i915_mm.h
v4: added kernel error message in stub function
v5: fixed compilation warnings
v6: checkpatch style
Signed-off-by: Siva Mullati <siva.mullati@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211208041215.763098-1-siva.mullati@intel.com
Diffstat (limited to 'drivers/gpu/drm/i915/i915_mm.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_mm.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_mm.h b/drivers/gpu/drm/i915/i915_mm.h new file mode 100644 index 000000000000..76f1d53bdf34 --- /dev/null +++ b/drivers/gpu/drm/i915/i915_mm.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright © 2021 Intel Corporation + */ + +#ifndef __I915_MM_H__ +#define __I915_MM_H__ + +#include <linux/types.h> + +struct vm_area_struct; +struct io_mapping; +struct scatterlist; + +#if IS_ENABLED(CONFIG_X86) +int remap_io_mapping(struct vm_area_struct *vma, + unsigned long addr, unsigned long pfn, unsigned long size, + struct io_mapping *iomap); +#else +static inline +int remap_io_mapping(struct vm_area_struct *vma, + unsigned long addr, unsigned long pfn, unsigned long size, + struct io_mapping *iomap) +{ + pr_err("Architecture has no %s() and shouldn't be calling this function\n", __func__); + WARN_ON_ONCE(1); + return 0; +} +#endif + +int remap_io_sg(struct vm_area_struct *vma, + unsigned long addr, unsigned long size, + struct scatterlist *sgl, resource_size_t iobase); + +#endif /* __I915_MM_H__ */ |