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misc: fastrpc: Add helper function to get list and page

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Add helper functions to get invoke buffer and page start pointers.

Signed-off-by: Vamsi Krishna Gattupalli <quic_vgattupa@quicinc.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20220214161002.6831-10-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vamsi Krishna Gattupalli 2022-02-14 16:09:59 +00:00 committed by Greg Kroah-Hartman
parent e90d911906
commit 54f7c85be3
1 changed files with 12 additions and 3 deletions
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15
drivers/misc/fastrpc.c
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@ -833,6 +833,16 @@ static int fastrpc_create_maps(struct fastrpc_invoke_ctx *ctx)
return 0;
}
static struct fastrpc_invoke_buf *fastrpc_invoke_buf_start(union fastrpc_remote_arg *pra, int len)
{
return (struct fastrpc_invoke_buf *)(&pra[len]);
}
static struct fastrpc_phy_page *fastrpc_phy_page_start(struct fastrpc_invoke_buf *buf, int len)
{
return (struct fastrpc_phy_page *)(&buf[len]);
}
static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
{
struct device *dev = ctx->fl->sctx->dev;
@ -860,9 +870,8 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
return err;
rpra = ctx->buf->virt;
list = ctx->buf->virt + ctx->nscalars * sizeof(*rpra);
pages = ctx->buf->virt + ctx->nscalars * (sizeof(*list) +
sizeof(*rpra));
list = fastrpc_invoke_buf_start(rpra, ctx->nscalars);
pages = fastrpc_phy_page_start(list, ctx->nscalars);
args = (uintptr_t)ctx->buf->virt + metalen;
rlen = pkt_size - metalen;
ctx->rpra = rpra;