The SCP on different chips will require different DRAM sizes and IPI
shared buffer sizes based on varying requirements.
Signed-off-by: Olivia Wen
---
drivers/remoteproc/mtk_common.h | 11 --
drivers/remoteproc/mtk_scp.c | 84 +++-
drivers/remoteproc/mtk_scp_ipi.c | 7 +++-
3 files changed, 79 insertions(+), 23 deletions(-)
diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h
index 6d7736a..fd5c539 100644
--- a/drivers/remoteproc/mtk_common.h
+++ b/drivers/remoteproc/mtk_common.h
@@ -78,7 +78,6 @@
#define MT8195_L2TCM_OFFSET0x850d0
#define SCP_FW_VER_LEN 32
-#define SCP_SHARE_BUFFER_SIZE 288
struct scp_run {
u32 signaled;
@@ -97,6 +96,11 @@ struct scp_ipi_desc {
struct mtk_scp;
+struct mtk_scp_sizes_data {
+ size_t max_dram_size;
+ size_t ipi_share_buffer_size;
+};
+
struct mtk_scp_of_data {
int (*scp_clk_get)(struct mtk_scp *scp);
int (*scp_before_load)(struct mtk_scp *scp);
@@ -110,6 +114,7 @@ struct mtk_scp_of_data {
u32 host_to_scp_int_bit;
size_t ipi_buf_offset;
+ const struct mtk_scp_sizes_data *scp_sizes;
};
struct mtk_scp_of_cluster {
@@ -141,10 +146,10 @@ struct mtk_scp {
struct scp_ipi_desc ipi_desc[SCP_IPI_MAX];
bool ipi_id_ack[SCP_IPI_MAX];
wait_queue_head_t ack_wq;
+ u8 *share_buf;
void *cpu_addr;
dma_addr_t dma_addr;
- size_t dram_size;
struct rproc_subdev *rpmsg_subdev;
@@ -162,7 +167,7 @@ struct mtk_scp {
struct mtk_share_obj {
u32 id;
u32 len;
- u8 share_buf[SCP_SHARE_BUFFER_SIZE];
+ u8 *share_buf;
};
void scp_memcpy_aligned(void __iomem *dst, const void *src, unsigned int len);
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 6295148..e281d28 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -20,7 +20,6 @@
#include "mtk_common.h"
#include "remoteproc_internal.h"
-#define MAX_CODE_SIZE 0x50
#define SECTION_NAME_IPI_BUFFER ".ipi_buffer"
/**
@@ -94,14 +93,15 @@ static void scp_ipi_handler(struct mtk_scp *scp)
{
struct mtk_share_obj __iomem *rcv_obj = scp->recv_buf;
struct scp_ipi_desc *ipi_desc = scp->ipi_desc;
- u8 tmp_data[SCP_SHARE_BUFFER_SIZE];
scp_ipi_handler_t handler;
u32 id = readl(_obj->id);
u32 len = readl(_obj->len);
+ const struct mtk_scp_sizes_data *scp_sizes;
- if (len > SCP_SHARE_BUFFER_SIZE) {
- dev_err(scp->dev, "ipi message too long (len %d, max %d)", len,
- SCP_SHARE_BUFFER_SIZE);
+ scp_sizes = scp->data->scp_sizes;
+ if (len > scp_sizes->ipi_share_buffer_size) {
+ dev_err(scp->dev, "ipi message too long (len %d, max %zd)", len,
+ scp_sizes->ipi_share_buffer_size);
return;
}
if (id >= SCP_IPI_MAX) {
@@ -117,8 +117,9 @@ static void scp_ipi_handler(struct mtk_scp *scp)
return;
}
- memcpy_fromio(tmp_data, _obj->share_buf, len);
- handler(tmp_data, len, ipi_desc[id].priv);
+ memset(scp->share_buf, 0, scp_sizes->ipi_share_buffer_size);
+ memcpy_fromio(scp->share_buf, _obj->share_buf, len);
+ handler(scp->share_buf, len, ipi_desc[id].priv);
scp_ipi_unlock(scp, id);
scp->ipi_id_ack[id] = true;
@@ -133,6 +134,8 @@ static int scp_ipi_init(struct mtk_scp *scp, const struct
firmware *fw)
{
int ret;
size_t buf_sz, offset;
+ size_t share_buf_offset;
+ const struct mtk_scp_sizes_data *scp_sizes;
/* read the ipi buf addr from FW itself first */
ret = scp_elf_read_ipi_buf_addr(scp, fw, );
@@ -152,12 +155,15 @@ static int scp_ipi_init(struct mtk_scp *scp, const struct
firmware *fw)
return -EOVERFLOW;
}
+ scp_sizes = scp->data->scp_sizes;
scp->recv_buf = (struct mtk_share_obj __iomem *)
(scp->sram_base + offset);
+ share_buf_offset = sizeof(scp->recv_buf->id)
+ + sizeof(scp->recv_buf->len) + scp_sizes->ipi_share_buffer_size;
scp->send_buf = (struct mtk_share_obj __iomem *)
- (scp->sram_base + offset + sizeof(*scp->recv_buf));
- memset_io(scp->recv_buf, 0, sizeof(*scp->recv_buf));
- memset_io(scp->send_buf, 0, sizeof(*scp->send_buf));
+ (scp->sram_base + offset + share_buf_offset);
+ memset_io(scp->recv_buf, 0, share_buf_offset);
+ memset_io(scp->send_buf, 0, share_buf_offset);
return 0;
}
@@ -741,14 +747,16 @@ static int scp_start(struct rproc *rproc)
static void *mt8183_scp_da_to_va(struct mtk_scp *scp, u64 da, size_t len)
{
int offset;
+ const struct mtk_scp_sizes_data *scp_sizes;
+ scp_sizes = scp->data->scp_sizes;
if (da <
