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remoteproc: mediatek: Support setting DRAM and IPI shared buffer sizes
The SCP on different chips will require different DRAM sizes and IPI shared buffer sizes based on varying requirements. Signed-off-by: Olivia Wen <olivia.wen@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Link: https://lore.kernel.org/r/20240430011534.9587-4-olivia.wen@mediatek.com Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
This commit is contained in:
Olivia Wen
Mathieu Poirier
parent
928a55ab1b
commit
c08a824945
@ -78,7 +78,6 @@
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#define MT8195_L2TCM_OFFSET 0x850d0
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#define SCP_FW_VER_LEN 32
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#define SCP_SHARE_BUFFER_SIZE 288
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struct scp_run {
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u32 signaled;
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@ -97,6 +96,11 @@ struct scp_ipi_desc {
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struct mtk_scp;
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struct mtk_scp_sizes_data {
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size_t max_dram_size;
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size_t ipi_share_buffer_size;
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};
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struct mtk_scp_of_data {
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int (*scp_clk_get)(struct mtk_scp *scp);
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int (*scp_before_load)(struct mtk_scp *scp);
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@ -110,6 +114,7 @@ struct mtk_scp_of_data {
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u32 host_to_scp_int_bit;
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size_t ipi_buf_offset;
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const struct mtk_scp_sizes_data *scp_sizes;
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};
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struct mtk_scp_of_cluster {
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@ -141,10 +146,10 @@ struct mtk_scp {
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struct scp_ipi_desc ipi_desc[SCP_IPI_MAX];
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bool ipi_id_ack[SCP_IPI_MAX];
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wait_queue_head_t ack_wq;
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u8 *share_buf;
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void *cpu_addr;
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dma_addr_t dma_addr;
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size_t dram_size;
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struct rproc_subdev *rpmsg_subdev;
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@ -162,7 +167,7 @@ struct mtk_scp {
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struct mtk_share_obj {
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u32 id;
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u32 len;
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u8 share_buf[SCP_SHARE_BUFFER_SIZE];
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u8 *share_buf;
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};
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void scp_memcpy_aligned(void __iomem *dst, const void *src, unsigned int len);
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@ -20,7 +20,6 @@
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#include "mtk_common.h"
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#include "remoteproc_internal.h"
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#define MAX_CODE_SIZE 0x500000
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#define SECTION_NAME_IPI_BUFFER ".ipi_buffer"
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/**
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@ -94,14 +93,15 @@ static void scp_ipi_handler(struct mtk_scp *scp)
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{
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struct mtk_share_obj __iomem *rcv_obj = scp->recv_buf;
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struct scp_ipi_desc *ipi_desc = scp->ipi_desc;
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u8 tmp_data[SCP_SHARE_BUFFER_SIZE];
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scp_ipi_handler_t handler;
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u32 id = readl(&rcv_obj->id);
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u32 len = readl(&rcv_obj->len);
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const struct mtk_scp_sizes_data *scp_sizes;
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if (len > SCP_SHARE_BUFFER_SIZE) {
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dev_err(scp->dev, "ipi message too long (len %d, max %d)", len,
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SCP_SHARE_BUFFER_SIZE);
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scp_sizes = scp->data->scp_sizes;
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if (len > scp_sizes->ipi_share_buffer_size) {
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dev_err(scp->dev, "ipi message too long (len %d, max %zd)", len,
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scp_sizes->ipi_share_buffer_size);
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return;
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}
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if (id >= SCP_IPI_MAX) {
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@ -117,8 +117,9 @@ static void scp_ipi_handler(struct mtk_scp *scp)
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return;
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}
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memcpy_fromio(tmp_data, &rcv_obj->share_buf, len);
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handler(tmp_data, len, ipi_desc[id].priv);
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memset(scp->share_buf, 0, scp_sizes->ipi_share_buffer_size);
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memcpy_fromio(scp->share_buf, &rcv_obj->share_buf, len);
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handler(scp->share_buf, len, ipi_desc[id].priv);
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scp_ipi_unlock(scp, id);
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scp->ipi_id_ack[id] = true;
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@ -133,6 +134,8 @@ static int scp_ipi_init(struct mtk_scp *scp, const struct firmware *fw)
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{
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int ret;
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size_t buf_sz, offset;
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size_t share_buf_offset;
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const struct mtk_scp_sizes_data *scp_sizes;
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/* read the ipi buf addr from FW itself first */
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ret = scp_elf_read_ipi_buf_addr(scp, fw, &offset);
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@ -152,12 +155,15 @@ static int scp_ipi_init(struct mtk_scp *scp, const struct firmware *fw)
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return -EOVERFLOW;
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}
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scp_sizes = scp->data->scp_sizes;
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scp->recv_buf = (struct mtk_share_obj __iomem *)
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(scp->sram_base + offset);
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share_buf_offset = sizeof(scp->recv_buf->id)
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+ sizeof(scp->recv_buf->len) + scp_sizes->ipi_share_buffer_size;
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scp->send_buf = (struct mtk_share_obj __iomem *)
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(scp->sram_base + offset + sizeof(*scp->recv_buf));
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memset_io(scp->recv_buf, 0, sizeof(*scp->recv_buf));
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memset_io(scp->send_buf, 0, sizeof(*scp->send_buf));
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(scp->sram_base + offset + share_buf_offset);
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memset_io(scp->recv_buf, 0, share_buf_offset);
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memset_io(scp->send_buf, 0, share_buf_offset);
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return 0;
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}
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@ -741,14 +747,16 @@ static int scp_start(struct rproc *rproc)
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static void *mt8183_scp_da_to_va(struct mtk_scp *scp, u64 da, size_t len)
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{
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int offset;
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const struct mtk_scp_sizes_data *scp_sizes;
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scp_sizes = scp->data->scp_sizes;
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if (da < scp->sram_size) {
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offset = da;
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if (offset >= 0 && (offset + len) <= scp->sram_size)
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return (void __force *)scp->sram_base + offset;
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} else if (scp->dram_size) {
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} else if (scp_sizes->max_dram_size) {
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offset = da - scp->dma_addr;
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if (offset >= 0 && (offset + len) <= scp->dram_size)
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if (offset >= 0 && (offset + len) <= scp_sizes->max_dram_size)
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return scp->cpu_addr + offset;
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}
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@ -758,7 +766,9 @@ static void *mt8183_scp_da_to_va(struct mtk_scp *scp, u64 da, size_t len)
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static void *mt8192_scp_da_to_va(struct mtk_scp *scp, u64 da, size_t len)
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{
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int offset;
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const struct mtk_scp_sizes_data *scp_sizes;
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scp_sizes = scp->data->scp_sizes;
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if (da >= scp->sram_phys &&
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(da + len) <= scp->sram_phys + scp->sram_size) {
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offset = da - scp->sram_phys;
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@ -774,9 +784,9 @@ static void *mt8192_scp_da_to_va(struct mtk_scp *scp, u64 da, size_t len)
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}
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/* optional memory region */
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if (scp->dram_size &&
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if (scp_sizes->max_dram_size &&
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da >= scp->dma_addr &&
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(da + len) <= scp->dma_addr + scp->dram_size) {
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(da + len) <= scp->dma_addr + scp_sizes->max_dram_size) {
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offset = da - scp->dma_addr;
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return scp->cpu_addr + offset;
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}
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@ -997,6 +1007,7 @@ EXPORT_SYMBOL_GPL(scp_mapping_dm_addr);
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static int scp_map_memory_region(struct mtk_scp *scp)
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{
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int ret;
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const struct mtk_scp_sizes_data *scp_sizes;
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ret = of_reserved_mem_device_init(scp->dev);
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@ -1012,8 +1023,8 @@ static int scp_map_memory_region(struct mtk_scp *scp)
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}
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/* Reserved SCP code size */
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scp->dram_size = MAX_CODE_SIZE;
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scp->cpu_addr = dma_alloc_coherent(scp->dev, scp->dram_size,
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scp_sizes = scp->data->scp_sizes;
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scp->cpu_addr = dma_alloc_coherent(scp->dev, scp_sizes->max_dram_size,
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&scp->dma_addr, GFP_KERNEL);
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if (!scp->cpu_addr)
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return -ENOMEM;
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@ -1023,10 +1034,13 @@ static int scp_map_memory_region(struct mtk_scp *scp)
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static void scp_unmap_memory_region(struct mtk_scp *scp)
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{
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if (scp->dram_size == 0)
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const struct mtk_scp_sizes_data *scp_sizes;
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scp_sizes = scp->data->scp_sizes;
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if (scp_sizes->max_dram_size == 0)
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return;
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dma_free_coherent(scp->dev, scp->dram_size, scp->cpu_addr,
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dma_free_coherent(scp->dev, scp_sizes->max_dram_size, scp->cpu_addr,
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scp->dma_addr);
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of_reserved_mem_device_release(scp->dev);
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}
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@ -1090,6 +1104,7 @@ static struct mtk_scp *scp_rproc_init(struct platform_device *pdev,
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struct resource *res;
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const char *fw_name = "scp.img";
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int ret, i;
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const struct mtk_scp_sizes_data *scp_sizes;
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ret = rproc_of_parse_firmware(dev, 0, &fw_name);
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if (ret < 0 && ret != -EINVAL)
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@ -1137,6 +1152,13 @@ static struct mtk_scp *scp_rproc_init(struct platform_device *pdev,
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goto release_dev_mem;
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}
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scp_sizes = scp->data->scp_sizes;
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scp->share_buf = kzalloc(scp_sizes->ipi_share_buffer_size, GFP_KERNEL);
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if (!scp->share_buf) {
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dev_err(dev, "Failed to allocate IPI share buffer\n");
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goto release_dev_mem;
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}
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init_waitqueue_head(&scp->run.wq);
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init_waitqueue_head(&scp->ack_wq);
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@ -1156,6 +1178,8 @@ static struct mtk_scp *scp_rproc_init(struct platform_device *pdev,
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remove_subdev:
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scp_remove_rpmsg_subdev(scp);
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scp_ipi_unregister(scp, SCP_IPI_INIT);
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kfree(scp->share_buf);
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scp->share_buf = NULL;
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release_dev_mem:
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scp_unmap_memory_region(scp);
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for (i = 0; i < SCP_IPI_MAX; i++)
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@ -1171,6 +1195,8 @@ static void scp_free(struct mtk_scp *scp)
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scp_remove_rpmsg_subdev(scp);
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scp_ipi_unregister(scp, SCP_IPI_INIT);
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kfree(scp->share_buf);
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scp->share_buf = NULL;
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scp_unmap_memory_region(scp);
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for (i = 0; i < SCP_IPI_MAX; i++)
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mutex_destroy(&scp->ipi_desc[i].lock);
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@ -1357,6 +1383,21 @@ static void scp_remove(struct platform_device *pdev)
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mutex_destroy(&scp_cluster->cluster_lock);
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}
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static const struct mtk_scp_sizes_data default_scp_sizes = {
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.max_dram_size = 0x500000,
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.ipi_share_buffer_size = 288,
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};
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static const struct mtk_scp_sizes_data mt8188_scp_sizes = {
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.max_dram_size = 0x500000,
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.ipi_share_buffer_size = 600,
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};
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static const struct mtk_scp_sizes_data mt8188_scp_c1_sizes = {
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.max_dram_size = 0xA00000,
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.ipi_share_buffer_size = 600,
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};
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static const struct mtk_scp_of_data mt8183_of_data = {
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.scp_clk_get = mt8183_scp_clk_get,
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.scp_before_load = mt8183_scp_before_load,
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@ -1368,6 +1409,7 @@ static const struct mtk_scp_of_data mt8183_of_data = {
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.host_to_scp_reg = MT8183_HOST_TO_SCP,
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.host_to_scp_int_bit = MT8183_HOST_IPC_INT_BIT,
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.ipi_buf_offset = 0x7bdb0,
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.scp_sizes = &default_scp_sizes,
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};
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static const struct mtk_scp_of_data mt8186_of_data = {
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@ -1381,6 +1423,7 @@ static const struct mtk_scp_of_data mt8186_of_data = {
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.host_to_scp_reg = MT8183_HOST_TO_SCP,
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.host_to_scp_int_bit = MT8183_HOST_IPC_INT_BIT,
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.ipi_buf_offset = 0x3bdb0,
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.scp_sizes = &default_scp_sizes,
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};
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static const struct mtk_scp_of_data mt8188_of_data = {
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@ -1393,6 +1436,7 @@ static const struct mtk_scp_of_data mt8188_of_data = {
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.scp_da_to_va = mt8192_scp_da_to_va,
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.host_to_scp_reg = MT8192_GIPC_IN_SET,
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.host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT,
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.scp_sizes = &mt8188_scp_sizes,
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};
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static const struct mtk_scp_of_data mt8188_of_data_c1 = {
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@ -1405,6 +1449,7 @@ static const struct mtk_scp_of_data mt8188_of_data_c1 = {
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.scp_da_to_va = mt8192_scp_da_to_va,
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.host_to_scp_reg = MT8192_GIPC_IN_SET,
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.host_to_scp_int_bit = MT8195_CORE1_HOST_IPC_INT_BIT,
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.scp_sizes = &mt8188_scp_c1_sizes,
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};
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static const struct mtk_scp_of_data mt8192_of_data = {
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@ -1417,6 +1462,7 @@ static const struct mtk_scp_of_data mt8192_of_data = {
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.scp_da_to_va = mt8192_scp_da_to_va,
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.host_to_scp_reg = MT8192_GIPC_IN_SET,
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.host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT,
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.scp_sizes = &default_scp_sizes,
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};
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static const struct mtk_scp_of_data mt8195_of_data = {
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@ -1429,6 +1475,7 @@ static const struct mtk_scp_of_data mt8195_of_data = {
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.scp_da_to_va = mt8192_scp_da_to_va,
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.host_to_scp_reg = MT8192_GIPC_IN_SET,
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.host_to_scp_int_bit = MT8192_HOST_IPC_INT_BIT,
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.scp_sizes = &default_scp_sizes,
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};
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static const struct mtk_scp_of_data mt8195_of_data_c1 = {
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@ -1441,6 +1488,7 @@ static const struct mtk_scp_of_data mt8195_of_data_c1 = {
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.scp_da_to_va = mt8192_scp_da_to_va,
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.host_to_scp_reg = MT8192_GIPC_IN_SET,
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.host_to_scp_int_bit = MT8195_CORE1_HOST_IPC_INT_BIT,
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.scp_sizes = &default_scp_sizes,
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};
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static const struct mtk_scp_of_data *mt8188_of_data_cores[] = {
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@ -162,10 +162,13 @@ int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len,
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struct mtk_share_obj __iomem *send_obj = scp->send_buf;
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u32 val;
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int ret;
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const struct mtk_scp_sizes_data *scp_sizes;
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scp_sizes = scp->data->scp_sizes;
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if (WARN_ON(id <= SCP_IPI_INIT) || WARN_ON(id >= SCP_IPI_MAX) ||
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WARN_ON(id == SCP_IPI_NS_SERVICE) ||
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WARN_ON(len > sizeof(send_obj->share_buf)) || WARN_ON(!buf))
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WARN_ON(len > scp_sizes->ipi_share_buffer_size) || WARN_ON(!buf))
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return -EINVAL;
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ret = clk_prepare_enable(scp->clk);
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@ -184,7 +187,7 @@ int scp_ipi_send(struct mtk_scp *scp, u32 id, void *buf, unsigned int len,
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goto unlock_mutex;
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}
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scp_memcpy_aligned(send_obj->share_buf, buf, len);
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scp_memcpy_aligned(&send_obj->share_buf, buf, len);
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writel(len, &send_obj->len);
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writel(id, &send_obj->id);
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