diff options
| author | Marek Vasut <[email protected]> | 2026-03-16 00:58:26 +0100 |
|---|---|---|
| committer | Marek Vasut <[email protected]> | 2026-04-08 19:53:44 +0200 |
| commit | 4a95a2a9e13ab05e4fc309f92bc33998d80afe01 (patch) | |
| tree | 6150504ba15ab9e9dffb0bdecdb458554cb0c09c | |
| parent | d3c7fb5eb92d5e5f38df49d0cb4edad385d2ff61 (diff) | |
ufs: Remap CPU to bus addresses using dev_phys_to_bus()
Use dev_phys_to_bus() to convert CPU addresses of DMA descriptors
into bus addresses of DMA descriptors. This is necessary on hardware
which does not have 1:1 mapping between CPU and memory addressed by
the DMA. This has no impact on other hardware which does not need
this conversion.
Signed-off-by: Marek Vasut <[email protected]>
| -rw-r--r-- | drivers/ufs/ufs-uclass.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/ufs/ufs-uclass.c b/drivers/ufs/ufs-uclass.c index bb997aace8f..81fd431f951 100644 --- a/drivers/ufs/ufs-uclass.c +++ b/drivers/ufs/ufs-uclass.c @@ -19,6 +19,7 @@ #include <dm/device-internal.h> #include <malloc.h> #include <hexdump.h> +#include <phys2bus.h> #include <scsi.h> #include <ufs.h> #include <asm/io.h> @@ -466,13 +467,13 @@ static int ufshcd_make_hba_operational(struct ufs_hba *hba) ufshcd_disable_intr_aggr(hba); /* Configure UTRL and UTMRL base address registers */ - ufshcd_writel(hba, lower_32_bits((dma_addr_t)hba->utrdl), + ufshcd_writel(hba, lower_32_bits(dev_phys_to_bus(hba->dev, (phys_addr_t)(uintptr_t)(hba->utrdl))), REG_UTP_TRANSFER_REQ_LIST_BASE_L); - ufshcd_writel(hba, upper_32_bits((dma_addr_t)hba->utrdl), + ufshcd_writel(hba, upper_32_bits(dev_phys_to_bus(hba->dev, (phys_addr_t)(uintptr_t)(hba->utrdl))), REG_UTP_TRANSFER_REQ_LIST_BASE_H); - ufshcd_writel(hba, lower_32_bits((dma_addr_t)hba->utmrdl), + ufshcd_writel(hba, lower_32_bits(dev_phys_to_bus(hba->dev, (phys_addr_t)(uintptr_t)(hba->utmrdl))), REG_UTP_TASK_REQ_LIST_BASE_L); - ufshcd_writel(hba, upper_32_bits((dma_addr_t)hba->utmrdl), + ufshcd_writel(hba, upper_32_bits(dev_phys_to_bus(hba->dev, (phys_addr_t)(uintptr_t)(hba->utmrdl))), REG_UTP_TASK_REQ_LIST_BASE_H); /* @@ -660,7 +661,7 @@ static void ufshcd_host_memory_configure(struct ufs_hba *hba) u16 prdt_offset; utrdlp = hba->utrdl; - cmd_desc_dma_addr = (dma_addr_t)hba->ucdl; + cmd_desc_dma_addr = dev_phys_to_bus(hba->dev, (phys_addr_t)(uintptr_t)(hba->ucdl)); utrdlp->command_desc_base_addr_lo = cpu_to_le32(lower_32_bits(cmd_desc_dma_addr)); @@ -1612,12 +1613,15 @@ void ufshcd_prepare_utp_scsi_cmd_upiu(struct ufs_hba *hba, ufshcd_cache_flush(hba->ucd_rsp_ptr, sizeof(*hba->ucd_rsp_ptr)); } -static inline void prepare_prdt_desc(struct ufshcd_sg_entry *entry, +static inline void prepare_prdt_desc(struct ufs_hba *hba, + struct ufshcd_sg_entry *entry, unsigned char *buf, ulong len) { + dma_addr_t da = dev_phys_to_bus(hba->dev, (phys_addr_t)(uintptr_t)buf); + entry->size = cpu_to_le32(len) | GENMASK(1, 0); - entry->base_addr = cpu_to_le32(lower_32_bits((unsigned long)buf)); - entry->upper_addr = cpu_to_le32(upper_32_bits((unsigned long)buf)); + entry->base_addr = cpu_to_le32(lower_32_bits(da)); + entry->upper_addr = cpu_to_le32(upper_32_bits(da)); } static void prepare_prdt_table(struct ufs_hba *hba, struct scsi_cmd *pccb) @@ -1639,13 +1643,13 @@ static void prepare_prdt_table(struct ufs_hba *hba, struct scsi_cmd *pccb) buf = pccb->pdata; i = table_length; while (--i) { - prepare_prdt_desc(&prd_table[table_length - i - 1], buf, + prepare_prdt_desc(hba, &prd_table[table_length - i - 1], buf, MAX_PRDT_ENTRY - 1); buf += MAX_PRDT_ENTRY; datalen -= MAX_PRDT_ENTRY; } - prepare_prdt_desc(&prd_table[table_length - i - 1], buf, datalen - 1); + prepare_prdt_desc(hba, &prd_table[table_length - i - 1], buf, datalen - 1); req_desc->prd_table_length = table_length; ufshcd_cache_flush(prd_table, sizeof(*prd_table) * table_length); |