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| author | Ben Levinsky <ben.levinsky@amd.com> | 2026-05-28 19:16:33 -0700 |
|---|---|---|
| committer | Mathieu Poirier <mathieu.poirier@linaro.org> | 2026-06-29 09:30:01 -0600 |
| commit | 50227acbf4e5173db0f05ed95414512e7783889f (patch) | |
| tree | b32d469633773221a98d4db7a92f3a83639e4238 /drivers | |
| parent | dc59e4fea9d83f03bad6bddf3fa2e52491777482 (diff) | |
| download | linux-next-50227acbf4e5173db0f05ed95414512e7783889f.tar.gz linux-next-50227acbf4e5173db0f05ed95414512e7783889f.zip | |
remoteproc: Add common wc-ioremap carveout callbacks
Several remoteproc drivers open-code the same ioremap_wc() and
iounmap() callbacks for carveout mappings. Add subsystem-private
helpers in remoteproc_internal.h so those drivers can share the same
implementation.
Keep this change behavior-neutral. The helper now emits a common error
message on ioremap_wc() failure, but leaves mem->is_iomem handling to a
follow-on patch so that the behavioral change can be justified
separately.
Signed-off-by: Ben Levinsky <ben.levinsky@amd.com>
Tested-by: Peng Fan <peng.fan@nxp.com> #i.MX8MP-EVK
Link: https://lore.kernel.org/r/20260529021637.2077602-2-ben.levinsky@amd.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/remoteproc/remoteproc_internal.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/drivers/remoteproc/remoteproc_internal.h b/drivers/remoteproc/remoteproc_internal.h index 0a5e15744b1d..46080c1c030e 100644 --- a/drivers/remoteproc/remoteproc_internal.h +++ b/drivers/remoteproc/remoteproc_internal.h @@ -14,6 +14,7 @@ #include <linux/irqreturn.h> #include <linux/firmware.h> +#include <linux/io.h> struct rproc; @@ -122,6 +123,31 @@ rproc_find_carveout_by_name(struct rproc *rproc, const char *name, ...); void rproc_add_rvdev(struct rproc *rproc, struct rproc_vdev *rvdev); void rproc_remove_rvdev(struct rproc_vdev *rvdev); +static inline int rproc_mem_entry_ioremap_wc(struct rproc *rproc, + struct rproc_mem_entry *mem) +{ + void __iomem *va; + + va = ioremap_wc(mem->dma, mem->len); + if (!va) { + dev_err(&rproc->dev, "Unable to map memory region: %pa+%zx\n", + &mem->dma, mem->len); + return -ENOMEM; + } + + mem->va = (__force void *)va; + + return 0; +} + +static inline int rproc_mem_entry_iounmap(struct rproc *rproc, + struct rproc_mem_entry *mem) +{ + iounmap((__force __iomem void *)mem->va); + + return 0; +} + static inline int rproc_prepare_device(struct rproc *rproc) { if (rproc->ops->prepare) |