| Message ID | 20231018055326.18256-2-jyanchou@realtek.com |
|---|---|
| State | New |
| Headers | show |
| Series | Add DesignWare Mobile mmc driver | expand |
Hi Jyan, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on ulf-hansson-mmc-mirror/next v6.6-rc6 next-20231018] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jyan-Chou/mmc-solve-DMA-boundary-limitation-of-CQHCI-driver/20231018-135532 base: linus/master patch link: https://lore.kernel.org/r/20231018055326.18256-2-jyanchou%40realtek.com patch subject: [PATCH V2][1/4] mmc: solve DMA boundary limitation of CQHCI driver config: csky-randconfig-001-20231019 (https://download.01.org/0day-ci/archive/20231019/202310191631.Hp1KsdtD-lkp@intel.com/config) compiler: csky-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231019/202310191631.Hp1KsdtD-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202310191631.Hp1KsdtD-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/mmc/host/sdhci_am654.c:17: >> drivers/mmc/host/cqhci.h:292:40: warning: 'struct mmc_data' declared inside parameter list will not be visible outside of this definition or declaration 292 | void (*setup_tran_desc)(struct mmc_data *data, | ^~~~~~~~ -- >> drivers/mmc/host/cqhci-core.c:477:6: warning: no previous prototype for 'cqhci_set_tran_desc' [-Wmissing-prototypes] 477 | void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, | ^~~~~~~~~~~~~~~~~~~ vim +292 drivers/mmc/host/cqhci.h 281 282 struct cqhci_host_ops { 283 void (*dumpregs)(struct mmc_host *mmc); 284 void (*write_l)(struct cqhci_host *host, u32 val, int reg); 285 u32 (*read_l)(struct cqhci_host *host, int reg); 286 void (*enable)(struct mmc_host *mmc); 287 void (*disable)(struct mmc_host *mmc, bool recovery); 288 void (*update_dcmd_desc)(struct mmc_host *mmc, struct mmc_request *mrq, 289 u64 *data); 290 void (*pre_enable)(struct mmc_host *mmc); 291 void (*post_disable)(struct mmc_host *mmc); > 292 void (*setup_tran_desc)(struct mmc_data *data, 293 struct cqhci_host *cq_host, u8 *desc, int sg_count); 294 #ifdef CONFIG_MMC_CRYPTO 295 int (*program_key)(struct cqhci_host *cq_host, 296 const union cqhci_crypto_cfg_entry *cfg, int slot); 297 #endif 298 }; 299
Hi Jyan, kernel test robot noticed the following build warnings: [auto build test WARNING on linus/master] [also build test WARNING on v6.6-rc6 next-20231019] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jyan-Chou/mmc-solve-DMA-boundary-limitation-of-CQHCI-driver/20231018-135532 base: linus/master patch link: https://lore.kernel.org/r/20231018055326.18256-2-jyanchou%40realtek.com patch subject: [PATCH V2][1/4] mmc: solve DMA boundary limitation of CQHCI driver config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20231019/202310192006.ZUfTNe5e-lkp@intel.com/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231019/202310192006.ZUfTNe5e-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202310192006.ZUfTNe5e-lkp@intel.com/ All warnings (new ones prefixed by >>): >> drivers/mmc/host/cqhci-core.c:477:6: warning: no previous prototype for function 'cqhci_set_tran_desc' [-Wmissing-prototypes] void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, ^ drivers/mmc/host/cqhci-core.c:477:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, ^ static 1 warning generated. vim +/cqhci_set_tran_desc +477 drivers/mmc/host/cqhci-core.c 476 > 477 void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, 478 bool dma64) 479 { 480 __le32 *attr = (__le32 __force *)desc; 481 482 *attr = (CQHCI_VALID(1) | 483 CQHCI_END(end ? 1 : 0) | 484 CQHCI_INT(0) | 485 CQHCI_ACT(0x4) | 486 CQHCI_DAT_LENGTH(len)); 487 488 if (dma64) { 489 __le64 *dataddr = (__le64 __force *)(desc + 4); 490 491 dataddr[0] = cpu_to_le64(addr); 492 } else { 493 __le32 *dataddr = (__le32 __force *)(desc + 4); 494 495 dataddr[0] = cpu_to_le32(addr); 496 } 497 } 498 EXPORT_SYMBOL(cqhci_set_tran_desc); 499
diff --git a/drivers/mmc/host/cqhci-core.c b/drivers/mmc/host/cqhci-core.c index b3d7d6d8d654..5560329d2a7d 100644 --- a/drivers/mmc/host/cqhci-core.c +++ b/drivers/mmc/host/cqhci-core.c @@ -474,7 +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, +void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, bool dma64) { __le32 *attr = (__le32 __force *)desc; @@ -495,6 +495,7 @@ static void cqhci_set_tran_desc(u8 *desc, dma_addr_t addr, int len, bool end, dataddr[0] = cpu_to_le32(addr); } } +EXPORT_SYMBOL(cqhci_set_tran_desc); static int cqhci_prep_tran_desc(struct mmc_request *mrq, struct cqhci_host *cq_host, int tag) @@ -516,6 +517,11 @@ static int cqhci_prep_tran_desc(struct mmc_request *mrq, desc = get_trans_desc(cq_host, tag); + if (cq_host->ops->setup_tran_desc) { + cq_host->ops->setup_tran_desc(data, cq_host, desc, sg_count); + return 0; + } + 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..cb3dfb161c54 100644 --- a/drivers/mmc/host/cqhci.h +++ b/drivers/mmc/host/cqhci.h @@ -289,6 +289,8 @@ struct cqhci_host_ops { u64 *data); void (*pre_enable)(struct mmc_host *mmc); void (*post_disable)(struct mmc_host *mmc); + void (*setup_tran_desc)(struct mmc_data *data, + struct cqhci_host *cq_host, u8 *desc, int sg_count); #ifdef CONFIG_MMC_CRYPTO int (*program_key)(struct cqhci_host *cq_host, const union cqhci_crypto_cfg_entry *cfg, int slot);
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@realtek.com> --- v0 -> v1: - Separate different patch supports into single patch. v1 -> v2: - Export cqhci_set_tran_desc for setting the descriptor's callback function. --- --- drivers/mmc/host/cqhci-core.c | 8 +++++++- drivers/mmc/host/cqhci.h | 2 ++ 2 files changed, 9 insertions(+), 1 deletion(-)