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path: root/drivers/remoteproc/da8xx_remoteproc.c
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Diffstat (limited to 'drivers/remoteproc/da8xx_remoteproc.c')
-rw-r--r--drivers/remoteproc/da8xx_remoteproc.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/remoteproc/da8xx_remoteproc.c b/drivers/remoteproc/da8xx_remoteproc.c
index 280b66d4f622..c1cff78de67b 100644
--- a/drivers/remoteproc/da8xx_remoteproc.c
+++ b/drivers/remoteproc/da8xx_remoteproc.c
@@ -38,9 +38,27 @@ MODULE_PARM_DESC(da8xx_fw_name,
#define SYSCFG_CHIPSIG3 BIT(3)
#define SYSCFG_CHIPSIG4 BIT(4)
+#define DA8XX_RPROC_LOCAL_ADDRESS_MASK (SZ_16M - 1)
+
+/**
+ * struct da8xx_rproc_mem - internal memory structure
+ * @cpu_addr: MPU virtual address of the memory region
+ * @bus_addr: Bus address used to access the memory region
+ * @dev_addr: Device address of the memory region from DSP view
+ * @size: Size of the memory region
+ */
+struct da8xx_rproc_mem {
+ void __iomem *cpu_addr;
+ phys_addr_t bus_addr;
+ u32 dev_addr;
+ size_t size;
+};
+
/**
* struct da8xx_rproc - da8xx remote processor instance state
* @rproc: rproc handle
+ * @mem: internal memory regions data
+ * @num_mems: number of internal memory regions
* @dsp_clk: placeholder for platform's DSP clk
* @ack_fxn: chip-specific ack function for ack'ing irq
* @irq_data: ack_fxn function parameter
@@ -50,6 +68,8 @@ MODULE_PARM_DESC(da8xx_fw_name,
*/
struct da8xx_rproc {
struct rproc *rproc;
+ struct da8xx_rproc_mem *mem;
+ int num_mems;
struct clk *dsp_clk;
void (*ack_fxn)(struct irq_data *data);
struct irq_data *irq_data;
@@ -158,6 +178,44 @@ static const struct rproc_ops da8xx_rproc_ops = {
.kick = da8xx_rproc_kick,
};
+static int da8xx_rproc_get_internal_memories(struct platform_device *pdev,
+ struct da8xx_rproc *drproc)
+{
+ static const char * const mem_names[] = {"l2sram", "l1pram", "l1dram"};
+ int num_mems = ARRAY_SIZE(mem_names);
+ struct device *dev = &pdev->dev;
+ struct resource *res;
+ int i;
+
+ drproc->mem = devm_kcalloc(dev, num_mems, sizeof(*drproc->mem),
+ GFP_KERNEL);
+ if (!drproc->mem)
+ return -ENOMEM;
+
+ for (i = 0; i < num_mems; i++) {
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+ mem_names[i]);
+ drproc->mem[i].cpu_addr = devm_ioremap_resource(dev, res);
+ if (IS_ERR(drproc->mem[i].cpu_addr)) {
+ dev_err(dev, "failed to parse and map %s memory\n",
+ mem_names[i]);
+ return PTR_ERR(drproc->mem[i].cpu_addr);
+ }
+ drproc->mem[i].bus_addr = res->start;
+ drproc->mem[i].dev_addr =
+ res->start & DA8XX_RPROC_LOCAL_ADDRESS_MASK;
+ drproc->mem[i].size = resource_size(res);
+
+ dev_dbg(dev, "memory %8s: bus addr %pa size 0x%x va %p da 0x%x\n",
+ mem_names[i], &drproc->mem[i].bus_addr,
+ drproc->mem[i].size, drproc->mem[i].cpu_addr,
+ drproc->mem[i].dev_addr);
+ }
+ drproc->num_mems = num_mems;
+
+ return 0;
+}
+
static int da8xx_rproc_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -213,6 +271,10 @@ static int da8xx_rproc_probe(struct platform_device *pdev)
drproc->dsp_clk = dsp_clk;
rproc->has_iommu = false;
+ ret = da8xx_rproc_get_internal_memories(pdev, drproc);
+ if (ret)
+ goto free_rproc;
+
platform_set_drvdata(pdev, rproc);
/* everything the ISR needs is now setup, so hook it up */

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