[PATCH v2 04/10] misc: fastrpc: Add fastrpc_remote_heap_alloc

From: Srinivas Kandagatla
Date: Fri Nov 25 2022 - 02:15:12 EST


From: Abel Vesa <abel.vesa@xxxxxxxxxx>

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

Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
Co-developed-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
---
drivers/misc/fastrpc.c | 29 ++++++++++++++++++++++++++---
1 file changed, 26 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 395036a10e15..9e83743eaca1 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -379,7 +379,7 @@ 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;
@@ -407,14 +407,37 @@ static int fastrpc_buf_alloc(struct fastrpc_user *fl, struct device *dev,
return -ENOMEM;
}

+ *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);

- *obuf = buf;
-
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;
--
2.25.1