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misc: fastrpc: Add fastrpc_remote_heap_alloc

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Split fastrpc_buf_alloc in such a way it allows allocation of remote
heap too and add fastrpc_remote_heap_alloc to do so.

Co-developed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20221125071405.148786-5-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Abel Vesa 2022-11-25 07:13:59 +00:00 committed by Greg Kroah-Hartman
parent 1ce91d45ba
commit 6f18c7e845
1 changed files with 27 additions and 4 deletions
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31
drivers/misc/fastrpc.c
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@ -369,7 +369,7 @@ static void fastrpc_buf_free(struct fastrpc_buf *buf)
kfree(buf);
}
static int fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev,
static int __fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev,
u64 size, struct fastrpc_buf **obuf)
{
struct fastrpc_buf *buf;
@ -397,14 +397,37 @@ static int fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev,
return -ENOMEM;
}
if (fl->sctx && fl->sctx->sid)
buf->phys += ((u64)fl->sctx->sid << 32);
*obuf = buf;
return 0;
}
static int fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev,
u64 size, struct fastrpc_buf **obuf)
{
int ret;
struct fastrpc_buf *buf;
ret = __fastrpc_buf_alloc(fl, dev, size, obuf);
if (ret)
return ret;
buf = *obuf;
if (fl->sctx && fl->sctx->sid)
buf->phys += ((u64)fl->sctx->sid << 32);
return 0;
}
static int fastrpc_remote_heap_alloc(struct fastrpc_user *fl, struct device *dev,
u64 size, struct fastrpc_buf **obuf)
{
struct device *rdev = &fl->cctx->rpdev->dev;
return __fastrpc_buf_alloc(fl, rdev, size, obuf);
}
static void fastrpc_channel_ctx_free(struct kref *ref)
{
struct fastrpc_channel_ctx *cctx;