Due to synopsys data book's description, it had a limitation while using DMA that buffer size and start address must not exceed 128 MB. We add an option setup_tran_desc to make tran_desc setting flexible. Signed-off-by: Jyan Chou <jyanchou@xxxxxxxxxxx> --- v6 -> v7: - fix kernel test robot build errors, error: no member named 'setup_tran_desc' in 'struct cqhci_host_ops' v4 -> v5: - use EXPORT_SYMBOL_GPL to replace EXPORT_SYMBOL - Fix kernel test robot build errors, let 'setup_tran_desc' to be a member in 'const struct cqhci_host_ops'. v2 -> v3: - Fix auto test compile warning. v1 -> v2: - Export cqhci_set_tran_desc for setting the descriptor's callback function. v0 -> v1: - Separate different patch supports into single patch. --- drivers/mmc/host/cqhci-core.c | 13 ++++++++++--- drivers/mmc/host/cqhci.h | 8 ++++++++ 2 files changed, 18 insertions(+), 3 deletions(-) diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c index b3d7d6d8d654..b40bd368a955 100644 --- a/drivers/mmc/host/cqhci-core.c +++ b/drivers/mmc/host/cqhci-core.c @@ -474,8 +474,7 @@ static int cqhci_dma_map(struct mmc_host *host, struct mmc_request *mrq) return sg_count; } -static void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, - bool dma64) +void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, bool dma64) { __le32 *attr = (__le32 __force *)desc; @@ -495,9 +494,10 @@ static void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, dataddr[0] = cpu_to_le32(addr); } } +EXPORT_SYMBOL_GPL(cqhci_set_tran_desc); static int cqhci_prep_tran_desc(struct mmc_request *mrq, - struct cqhci_host *cq_host, int tag) + struct cqhci_host *cq_host, int tag) { struct mmc_data *data = mrq->data; int i, sg_count, len; @@ -516,6 +516,13 @@ static int cqhci_prep_tran_desc(struct mmc_request *mrq, desc = get_trans_desc(cq_host, tag); +#ifdef CONFIG_MMC_DW_CQE + if (cq_host->ops->setup_tran_desc) { + cq_host->ops->setup_tran_desc(data, cq_host, desc, sg_count); + return 0; + } +#endif + for_each_sg(data->sg, sg, sg_count, i) { addr = sg_dma_address(sg); len = sg_dma_len(sg); diff --git a/drivers/mmc/host/cqhci.h b/drivers/mmc/host/cqhci.h index 1a12e40a02e6..713fc56127df 100644 --- a/drivers/mmc/host/cqhci.h +++ b/drivers/mmc/host/cqhci.h @@ -216,6 +216,7 @@ union cqhci_crypto_cfg_entry { struct cqhci_host_ops; struct mmc_host; struct mmc_request; +struct mmc_data; struct cqhci_slot; struct cqhci_host { @@ -293,6 +294,11 @@ struct cqhci_host_ops { int (*program_key)(struct cqhci_host *cq_host, const union cqhci_crypto_cfg_entry *cfg, int slot); #endif + +#ifdef CONFIG_MMC_DW_CQE + void (*setup_tran_desc)(struct mmc_data *data, + struct cqhci_host *cq_host, u8 *desc, int sg_count); +#endif }; static inline void cqhci_writel(struct cqhci_host *host, u32 val, int reg) @@ -322,6 +328,8 @@ static inline int cqhci_suspend(struct mmc_host *mmc) { return cqhci_deactivate(mmc); } + +void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, bool dma64); int cqhci_resume(struct mmc_host *mmc); #endif -- 2.42.0