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[93.133.129.133]) by smtp.gmail.com with ESMTPSA id c35sm20715740wra.1.2017.03.20.06.01.27 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 Mar 2017 06:01:28 -0700 (PDT) Subject: Re: meson-gx-mmc: 2nd patch set To: Heiner Kallweit References: <2a6d59e0-28db-b65a-835d-512a7e68443e@gmail.com> <9a90bda9-6d12-a368-99ce-67c112249a43@gmail.com> <8383c0cd-f397-78f4-35ea-fa9f0d399e67@gmail.com> <2e91e4e6-bfe1-58a5-8f46-ade8917b01a2@gmail.com> <8a85f2ba-3ce8-c452-2043-7ab0957203e5@gmail.com> <0cf001d6-66df-7a2f-1435-63a662a3a4cd@gmail.com> From: Helmut Klein Message-ID: <82061526-2d16-5710-89a6-afbeecbf0c57@gmail.com> Date: Mon, 20 Mar 2017 14:01:26 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170320_060153_181567_3C56D9FD X-CRM114-Status: GOOD ( 17.24 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-amlogic@lists.infradead.org, "linux-mmc@vger.kernel.org" Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+patchwork-linux-amlogic=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP On 20.03.2017 13:51, Helmut Klein wrote: > On 19.03.2017 23:39, Heiner Kallweit wrote: >> Am 19.03.2017 um 21:46 schrieb Helmut Klein: >>> On 19.03.2017 16:35, Heiner Kallweit wrote: >>>> Am 19.03.2017 um 12:23 schrieb Helmut Klein: >>>>> On 18.03.2017 11:24, Heiner Kallweit wrote: >>>>>> Am 18.03.2017 um 09:11 schrieb Helmut Klein: >>>>>>> On 17.03.2017 20:54, Heiner Kallweit wrote: >>>>>>>> Am 17.03.2017 um 19:00 schrieb Helmut Klein: >>>>>>>>> On 17.03.2017 07:44, Heiner Kallweit wrote: >>>>>>>>>> Am 16.03.2017 um 22:12 schrieb Helmut Klein: >>>>>>>>>>> Hallo Heiner, >>>>>>>>>>> >>>>>>>>>>> i applied your 2nd patch sets to linux-amlogic. (and of >>>>>>>>>>> course the older set v5 1...10). >>>>>>>>>>> >>>>>>>>>>> The performance of the sd-card and the mmc-chip of my minimx >>>>>>>>>>> is much better now. >>>>>>>>>>> >>>>>>>>>>> sd-card: from 6.5 to 22.5 MBytes/s >>>>>>>>>>> mmc: from 14.5 to 28.5 MBytes/s (hs200 compatible device) >>>>>>>>>>> >>>>>>>>>>> But: >>>>>>>>>>> the wifi-adapter is no longer operational. The problem starts >>>>>>>>>>> with patch 3 and gets worse with patch 5. >>>>>>>>>>> >>>>>>>>>>> the adapter (ap6330) is attached to the sdio port of the the >>>>>>>>>>> s905. (=mmc1) >>>>>>>>>>> >>>>>>>>>> Thanks for testing and sharing the feedback. Much appreciated. >>>>>>>>>> The board I test on supports block devices only. >>>>>>>>>> >>>>>>>>>> Could you please share few more details: >>>>>>>>>> - Drivers involved >>>>>>>>>> - All syslog messages related to the device / driver >>>>>>>>>> >>>>>>>>>> And please set the relevant mailing lists on cc when providing >>>>>>>>>> test feedback. >>>>>>>>>> Others might find your feedback helpful too. >>>>>>>>>> >>>>>>>>>> Thanks, Heiner >>>>>>>>>> >>>>>>>>>>> so i think it is important to test your patch set asap on an >>>>>>>>>>> officially supported board with a wifi adapter). >>>>>>>>>>> >>>>>>>>>>> regards >>>>>>>>>>> Helmut >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>>> The driver for the wifi adapter is brcmfmac. It is compiled as >>>>>>>>> a module and loaded via /etc/modules. >>>>>>>>> the driver depends on the modules brcmutil and cfg80211, which >>>>>>>>> are auto loaded. >>>>>>>>> >>>>>>>>> my user space is debian unstable. The kernel is cross compiled >>>>>>>>> on my x86-64 laptop with gcc 5.4.1 >>>>>>>>> >>>>>>>>> i use my own kernel configuration without an initial ramdisk. >>>>>>>>> mmc, usb & ext4 drivers are compiled into the kernel >>>>>>>>> >>>>>>>>> kernel & dtb are loaded by u-boot from mmcblk2p1 (sd-card) >>>>>>>>> >>>>>>>>> the drive for the kernel is sda2 (sd-card inside of a usb card >>>>>>>>> reader). >>>>>>>>> >>>>>>>>> >>>>>>>>> here is the filtered (mmc|brcmfmac) syslog output when only >>>>>>>>> patches 1 & 2 are applied >>>>>>>>> >>>>>>>>> [ 1.685012] meson-gx-mmc d0074000.mmc: allocated mmc-pwrseq >>>>>>>>> [ 1.873010] mmc0: new DDR MMC card at address 0001 >>>>>>>>> [ 1.873258] mmcblk0: mmc0:0001 NCard 14.5 GiB >>>>>>>>> [ 1.876731] mmcblk0boot0: mmc0:0001 NCard partition 1 4.00 MiB >>>>>>>>> [ 1.882597] mmcblk0boot1: mmc0:0001 NCard partition 2 4.00 MiB >>>>>>>>> [ 2.004399] meson-gx-mmc d0070000.mmc: allocated mmc-pwrseq >>>>>>>>> [ 2.048160] meson-gx-mmc d0072000.mmc: Got CD GPIO >>>>>>>>> [ 2.066962] mmc1: queuing unknown CIS tuple 0x80 (2 bytes) >>>>>>>>> [ 2.068985] mmc1: queuing unknown CIS tuple 0x80 (3 bytes) >>>>>>>>> [ 2.074242] mmc1: queuing unknown CIS tuple 0x80 (3 bytes) >>>>>>>>> [ 2.081275] mmc1: queuing unknown CIS tuple 0x80 (7 bytes) >>>>>>>>> [ 2.124761] mmc2: Skipping voltage switch >>>>>>>>> [ 2.153763] mmc1: new high speed SDIO card at address 0001 >>>>>>>>> [ 2.158567] mmc2: new high speed SDHC card at address 59b4 >>>>>>>>> [ 2.159219] mmcblk2: mmc2:59b4 USD00 29.5 GiB >>>>>>>>> [ 2.164206] mmcblk2: p1 p2 >>>>>>>>> [ 6.664118] brcmfmac: brcmf_c_preinit_dcmds: Firmware >>>>>>>>> version = wl0: Jan 6 2014 15:11:29 version 5.90.195.89.13 FWID >>>>>>>>> 01-72f124c5 >>>>>>>>> [ 6.736239] brcmfmac: brcmf_cfg80211_reg_notifier: not a >>>>>>>>> ISO3166 code (0x30 0x30) >>>>>>>>> [ 6.928045] brcmfmac: brcmf_construct_chaninfo: Ignoring >>>>>>>>> unexpected firmware channel 184 >>>>>>>>> [ 6.930475] brcmfmac: brcmf_construct_chaninfo: Ignoring >>>>>>>>> unexpected firmware channel 188 >>>>>>>>> [ 6.938524] brcmfmac: brcmf_construct_chaninfo: Ignoring >>>>>>>>> unexpected firmware channel 192 >>>>>>>>> [ 6.946543] brcmfmac: brcmf_construct_chaninfo: Ignoring >>>>>>>>> unexpected firmware channel 196 >>>>>>>>> [ 6.954566] brcmfmac: brcmf_construct_chaninfo: Ignoring >>>>>>>>> unexpected firmware channel 200 >>>>>>>>> [ 6.954663] brcmfmac: brcmf_cfg80211_reg_notifier: not a >>>>>>>>> ISO3166 code (0x30 0x30) >>>>>>>>> [ 6.969995] brcmfmac: brcmf_construct_chaninfo: Ignoring >>>>>>>>> unexpected firmware channel 204 >>>>>>>>> [ 6.978023] brcmfmac: brcmf_construct_chaninfo: Ignoring >>>>>>>>> unexpected firmware channel 208 >>>>>>>>> >>>>>>>>> this is the output after adding patch 3 >>>>>>>>> >>>>>>>>> [ 1.684982] meson-gx-mmc d0074000.mmc: allocated mmc-pwrseq >>>>>>>>> [ 1.873041] mmc0: new DDR MMC card at address 0001 >>>>>>>>> [ 1.873273] mmcblk0: mmc0:0001 NCard 14.5 GiB >>>>>>>>> [ 1.876765] mmcblk0boot0: mmc0:0001 NCard partition 1 4.00 MiB >>>>>>>>> [ 1.882621] mmcblk0boot1: mmc0:0001 NCard partition 2 4.00 MiB >>>>>>>>> [ 2.004408] meson-gx-mmc d0070000.mmc: allocated mmc-pwrseq >>>>>>>>> [ 2.048189] meson-gx-mmc d0072000.mmc: Got CD GPIO >>>>>>>>> [ 2.066978] mmc1: queuing unknown CIS tuple 0x80 (2 bytes) >>>>>>>>> [ 2.069001] mmc1: queuing unknown CIS tuple 0x80 (3 bytes) >>>>>>>>> [ 2.074253] mmc1: queuing unknown CIS tuple 0x80 (3 bytes) >>>>>>>>> [ 2.081285] mmc1: queuing unknown CIS tuple 0x80 (7 bytes) >>>>>>>>> [ 2.124874] mmc2: Skipping voltage switch >>>>>>>>> [ 2.153475] mmc1: new high speed SDIO card at address 0001 >>>>>>>>> [ 2.158610] mmc2: new high speed SDHC card at address 59b4 >>>>>>>>> [ 2.158935] mmcblk2: mmc2:59b4 USD00 29.5 GiB >>>>>>>>> [ 2.163910] mmcblk2: p1 p2 >>>>>>>>> [ 6.586318] brcmfmac: brcmf_sdiod_ramrw: membytes transfer >>>>>>>>> failed <<<===== >>>>>>>>> [ 6.586810] brcmfmac: brcmf_sdio_download_code_file: error >>>>>>>>> -84 on writing 239507 membytes at 0x00000000 >>>>>>>>> [ 6.596373] brcmfmac: brcmf_sdio_download_firmware: dongle >>>>>>>>> image file download failed >>>>>>>>> >>>>>>>>> and this is the output after adding patches 4 & 5 >>>>>>>>> >>>>>>>>> [ 1.684941] meson-gx-mmc d0074000.mmc: allocated mmc-pwrseq >>>>>>>>> [ 1.868910] mmc0: new DDR MMC card at address 0001 >>>>>>>>> [ 1.869159] mmcblk0: mmc0:0001 NCard 14.5 GiB >>>>>>>>> [ 1.872639] mmcblk0boot0: mmc0:0001 NCard partition 1 4.00 MiB >>>>>>>>> [ 1.878497] mmcblk0boot1: mmc0:0001 NCard partition 2 4.00 MiB >>>>>>>>> [ 1.884356] mmcblk0rpmb: mmc0:0001 NCard partition 3 128 >>>>>>>>> KiB <<<===== >>>>>>>>> [ 2.000339] meson-gx-mmc d0070000.mmc: allocated mmc-pwrseq >>>>>>>>> [ 2.044090] meson-gx-mmc d0072000.mmc: Got CD GPIO >>>>>>>>> [ 2.062850] mmc1: queuing unknown CIS tuple 0x80 (2 bytes) >>>>>>>>> [ 2.064869] mmc1: queuing unknown CIS tuple 0x80 (3 bytes) >>>>>>>>> [ 2.070129] mmc1: queuing unknown CIS tuple 0x80 (3 bytes) >>>>>>>>> [ 2.077161] mmc1: queuing unknown CIS tuple 0x80 (7 bytes) >>>>>>>>> [ 2.120693] mmc2: Skipping voltage switch >>>>>>>>> [ 2.148795] mmc1: new high speed SDIO card at address 0001 >>>>>>>>> [ 2.154443] mmc2: new high speed SDHC card at address 59b4 >>>>>>>>> [ 2.154660] mmcblk2: mmc2:59b4 USD00 29.5 GiB >>>>>>>>> [ 2.159402] mmcblk2: p1 p2 >>>>>>>>> [ 6.550881] brcmfmac: brcmf_chip_recognition: SB chip is not >>>>>>>>> supported <<<===== >>>>>>>>> [ 6.556606] brcmfmac: brcmf_sdio_probe_attach: >>>>>>>>> brcmf_chip_attach failed! >>>>>>>>> [ 6.563260] brcmfmac: brcmf_sdio_probe: >>>>>>>>> brcmf_sdio_probe_attach failed >>>>>>>>> [ 6.569796] brcmfmac: brcmf_ops_sdio_probe: F2 error, probe >>>>>>>>> failed -19... >>>>>>>>> >>>>>>>>> regards >>>>>>>>> Helmut >>>>>>>>> >>>>>>>> >>>>>>>> Thanks a lot for the additional information. The first version >>>>>>>> of the patch >>>>>>>> set broke byte mode obviously (block mode is working fine). >>>>>>>> >>>>>>>> Before submitting a new version of the patch set: >>>>>>>> Could you please apply patches 1, 2, and 4 of the patch set plus >>>>>>>> the >>>>>>>> following one and re-test? >>>>>>>> >>>>>>>> Thanks, Heiner >>>>>>>> >>>>>>>> --- >>>>>>>> drivers/mmc/host/meson-gx-mmc.c | 222 >>>>>>>> ++++++++++++++++++++++------------------ >>>>>>>> 1 file changed, 124 insertions(+), 98 deletions(-) >>>>>>>> >>>>>>>> diff --git a/drivers/mmc/host/meson-gx-mmc.c >>>>>>>> b/drivers/mmc/host/meson-gx-mmc.c >>>>>>>> index 6bfd3da9..ca685902 100644 >>>>>>>> --- a/drivers/mmc/host/meson-gx-mmc.c >>>>>>>> +++ b/drivers/mmc/host/meson-gx-mmc.c >>>>>>>> @@ -121,6 +121,13 @@ >>>>>>>> #define SD_EMMC_CFG_CMD_GAP 16 /* in clock cycles */ >>>>>>>> #define MUX_CLK_NUM_PARENTS 2 >>>>>>>> >>>>>>>> +struct sd_emmc_desc { >>>>>>>> + u32 cmd_cfg; >>>>>>>> + u32 cmd_arg; >>>>>>>> + u32 cmd_data; >>>>>>>> + u32 cmd_resp; >>>>>>>> +}; >>>>>>>> + >>>>>>>> struct meson_host { >>>>>>>> struct device *dev; >>>>>>>> struct mmc_host *mmc; >>>>>>>> @@ -136,19 +143,12 @@ struct meson_host { >>>>>>>> struct clk_divider cfg_div; >>>>>>>> struct clk *cfg_div_clk; >>>>>>>> >>>>>>>> - unsigned int bounce_buf_size; >>>>>>>> - void *bounce_buf; >>>>>>>> - dma_addr_t bounce_dma_addr; >>>>>>>> + struct sd_emmc_desc *descs; >>>>>>>> + dma_addr_t descs_dma_addr; >>>>>>>> >>>>>>>> bool vqmmc_enabled; >>>>>>>> }; >>>>>>>> >>>>>>>> -struct sd_emmc_desc { >>>>>>>> - u32 cmd_cfg; >>>>>>>> - u32 cmd_arg; >>>>>>>> - u32 cmd_data; >>>>>>>> - u32 cmd_resp; >>>>>>>> -}; >>>>>>>> #define CMD_CFG_LENGTH_SHIFT 0 >>>>>>>> #define CMD_CFG_LENGTH_MASK 0x1ff >>>>>>>> #define CMD_CFG_BLOCK_MODE BIT(9) >>>>>>>> @@ -185,6 +185,36 @@ static struct mmc_command >>>>>>>> *meson_mmc_get_next_command(struct mmc_command *cmd) >>>>>>>> return NULL; >>>>>>>> } >>>>>>>> >>>>>>>> +static enum dma_data_direction meson_mmc_get_data_dir(struct >>>>>>>> mmc_data *data) >>>>>>>> +{ >>>>>>>> + return data->flags & MMC_DATA_WRITE ? DMA_TO_DEVICE : >>>>>>>> DMA_FROM_DEVICE; >>>>>>>> +} >>>>>>>> + >>>>>>>> +static void meson_mmc_pre_req(struct mmc_host *mmc, struct >>>>>>>> mmc_request *mrq) >>>>>>>> +{ >>>>>>>> + struct mmc_data *data = mrq->data; >>>>>>>> + >>>>>>>> + if (!data) >>>>>>>> + return; >>>>>>>> + >>>>>>>> + data->host_cookie = true; >>>>>>>> + >>>>>>>> + data->sg_count = dma_map_sg(mmc_dev(mmc), data->sg, >>>>>>>> data->sg_len, >>>>>>>> + meson_mmc_get_data_dir(data)); >>>>>>>> + if (!data->sg_count) >>>>>>>> + dev_err(mmc_dev(mmc), "dma_map_sg failed"); >>>>>>>> +} >>>>>>>> + >>>>>>>> +static void meson_mmc_post_req(struct mmc_host *mmc, struct >>>>>>>> mmc_request *mrq, >>>>>>>> + int err) >>>>>>>> +{ >>>>>>>> + struct mmc_data *data = mrq->data; >>>>>>>> + >>>>>>>> + if (data && data->sg_count) >>>>>>>> + dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, >>>>>>>> + meson_mmc_get_data_dir(data)); >>>>>>>> +} >>>>>>>> + >>>>>>>> static int meson_mmc_clk_set(struct meson_host *host, unsigned >>>>>>>> long clk_rate) >>>>>>>> { >>>>>>>> struct mmc_host *mmc = host->mmc; >>>>>>>> @@ -434,104 +464,102 @@ static void >>>>>>>> meson_mmc_request_done(struct mmc_host *mmc, >>>>>>>> static void meson_mmc_start_cmd(struct mmc_host *mmc, struct >>>>>>>> mmc_command *cmd) >>>>>>>> { >>>>>>>> struct meson_host *host = mmc_priv(mmc); >>>>>>>> - struct sd_emmc_desc *desc, desc_tmp; >>>>>>>> - u32 cfg; >>>>>>>> - u8 blk_len, cmd_cfg_timeout; >>>>>>>> - unsigned int xfer_bytes = 0; >>>>>>>> + struct sd_emmc_desc *desc = host->descs; >>>>>>>> + struct mmc_data *data = cmd->data; >>>>>>>> + struct scatterlist *sg; >>>>>>>> + u32 cfg, cmd_cfg = 0; >>>>>>>> + u8 blk_len; >>>>>>>> + int i; >>>>>>>> >>>>>>>> - /* Setup descriptors */ >>>>>>>> dma_rmb(); >>>>>>>> - desc = &desc_tmp; >>>>>>>> - memset(desc, 0, sizeof(struct sd_emmc_desc)); >>>>>>>> >>>>>>>> - desc->cmd_cfg |= (cmd->opcode & CMD_CFG_CMD_INDEX_MASK) << >>>>>>>> - CMD_CFG_CMD_INDEX_SHIFT; >>>>>>>> - desc->cmd_cfg |= CMD_CFG_OWNER; /* owned by CPU */ >>>>>>>> - desc->cmd_arg = cmd->arg; >>>>>>>> + cmd_cfg |= (cmd->opcode & CMD_CFG_CMD_INDEX_MASK) << >>>>>>>> + CMD_CFG_CMD_INDEX_SHIFT; >>>>>>>> + cmd_cfg |= CMD_CFG_OWNER; /* owned by CPU */ >>>>>>>> >>>>>>>> /* Response */ >>>>>>>> if (cmd->flags & MMC_RSP_PRESENT) { >>>>>>>> - desc->cmd_cfg &= ~CMD_CFG_NO_RESP; >>>>>>>> if (cmd->flags & MMC_RSP_136) >>>>>>>> - desc->cmd_cfg |= CMD_CFG_RESP_128; >>>>>>>> - desc->cmd_cfg |= CMD_CFG_RESP_NUM; >>>>>>>> - desc->cmd_resp = 0; >>>>>>>> + cmd_cfg |= CMD_CFG_RESP_128; >>>>>>>> + cmd_cfg |= CMD_CFG_RESP_NUM; >>>>>>>> >>>>>>>> if (!(cmd->flags & MMC_RSP_CRC)) >>>>>>>> - desc->cmd_cfg |= CMD_CFG_RESP_NOCRC; >>>>>>>> + cmd_cfg |= CMD_CFG_RESP_NOCRC; >>>>>>>> >>>>>>>> if (cmd->flags & MMC_RSP_BUSY) >>>>>>>> - desc->cmd_cfg |= CMD_CFG_R1B; >>>>>>>> + cmd_cfg |= CMD_CFG_R1B; >>>>>>>> } else { >>>>>>>> - desc->cmd_cfg |= CMD_CFG_NO_RESP; >>>>>>>> + cmd_cfg |= CMD_CFG_NO_RESP; >>>>>>>> } >>>>>>>> >>>>>>>> - /* data? */ >>>>>>>> - if (cmd->data) { >>>>>>>> - desc->cmd_cfg |= CMD_CFG_DATA_IO; >>>>>>>> - if (cmd->data->blocks > 1) { >>>>>>>> - desc->cmd_cfg |= CMD_CFG_BLOCK_MODE; >>>>>>>> - desc->cmd_cfg |= >>>>>>>> - (cmd->data->blocks & CMD_CFG_LENGTH_MASK) << >>>>>>>> - CMD_CFG_LENGTH_SHIFT; >>>>>>>> + if (data) { >>>>>>>> + cmd_cfg |= CMD_CFG_DATA_IO; >>>>>>>> + >>>>>>>> + if (data->blocks > 1) { >>>>>>>> + cmd_cfg |= CMD_CFG_BLOCK_MODE; >>>>>>>> >>>>>>>> /* check if block-size matches, if not update */ >>>>>>>> cfg = readl(host->regs + SD_EMMC_CFG); >>>>>>>> blk_len = cfg & (CFG_BLK_LEN_MASK << >>>>>>>> CFG_BLK_LEN_SHIFT); >>>>>>>> blk_len >>= CFG_BLK_LEN_SHIFT; >>>>>>>> - if (blk_len != ilog2(cmd->data->blksz)) { >>>>>>>> - dev_dbg(host->dev, "%s: update blk_len %d -> >>>>>>>> %d\n", >>>>>>>> - __func__, blk_len, >>>>>>>> - ilog2(cmd->data->blksz)); >>>>>>>> - blk_len = ilog2(cmd->data->blksz); >>>>>>>> + if (blk_len != ilog2(data->blksz)) { >>>>>>>> + dev_dbg(host->dev, >>>>>>>> + "%s: update blk_len %d -> %d\n", >>>>>>>> + __func__, blk_len, ilog2(data->blksz)); >>>>>>>> + blk_len = ilog2(data->blksz); >>>>>>>> cfg &= ~(CFG_BLK_LEN_MASK << CFG_BLK_LEN_SHIFT); >>>>>>>> cfg |= blk_len << CFG_BLK_LEN_SHIFT; >>>>>>>> writel(cfg, host->regs + SD_EMMC_CFG); >>>>>>>> } >>>>>>>> - } else { >>>>>>>> - desc->cmd_cfg &= ~CMD_CFG_BLOCK_MODE; >>>>>>>> - desc->cmd_cfg |= >>>>>>>> - (cmd->data->blksz & CMD_CFG_LENGTH_MASK) << >>>>>>>> - CMD_CFG_LENGTH_SHIFT; >>>>>>>> } >>>>>>>> >>>>>>>> - cmd->data->bytes_xfered = 0; >>>>>>>> - xfer_bytes = cmd->data->blksz * cmd->data->blocks; >>>>>>>> - if (cmd->data->flags & MMC_DATA_WRITE) { >>>>>>>> - desc->cmd_cfg |= CMD_CFG_DATA_WR; >>>>>>>> - WARN_ON(xfer_bytes > host->bounce_buf_size); >>>>>>>> - sg_copy_to_buffer(cmd->data->sg, cmd->data->sg_len, >>>>>>>> - host->bounce_buf, xfer_bytes); >>>>>>>> - cmd->data->bytes_xfered = xfer_bytes; >>>>>>>> - dma_wmb(); >>>>>>>> - } else { >>>>>>>> - desc->cmd_cfg &= ~CMD_CFG_DATA_WR; >>>>>>>> - } >>>>>>>> + data->bytes_xfered = 0; >>>>>>>> + if (data->flags & MMC_DATA_WRITE) >>>>>>>> + cmd_cfg |= CMD_CFG_DATA_WR; >>>>>>>> >>>>>>>> - desc->cmd_data = host->bounce_dma_addr & CMD_DATA_MASK; >>>>>>>> + cmd_cfg |= ilog2(SD_EMMC_CMD_TIMEOUT_DATA) << >>>>>>>> + CMD_CFG_TIMEOUT_SHIFT; >>>>>>>> + >>>>>>>> + for_each_sg(data->sg, sg, data->sg_count, i) { >>>>>>>> + unsigned int len = sg_dma_len(sg); >>>>>>>> + >>>>>>>> + if (data->blocks > 1) >>>>>>>> + len /= data->blksz; >>>>>>>> + >>>>>>>> + desc[i].cmd_cfg = cmd_cfg; >>>>>>>> + desc[i].cmd_cfg |= (len & CMD_CFG_LENGTH_MASK) << >>>>>>>> + CMD_CFG_LENGTH_SHIFT; >>>>>>>> + if (i > 0) >>>>>>>> + desc[i].cmd_cfg |= CMD_CFG_NO_CMD; >>>>>>>> + desc[i].cmd_arg = cmd->arg; >>>>>>>> + desc[i].cmd_resp = 0; >>>>>>>> + desc[i].cmd_data = sg_dma_address(sg); >>>>>>>> + } >>>>>>>> + desc[data->sg_count - 1].cmd_cfg |= CMD_CFG_END_OF_CHAIN; >>>>>>>> >>>>>>>> - cmd_cfg_timeout = ilog2(SD_EMMC_CMD_TIMEOUT_DATA); >>>>>>>> } else { >>>>>>>> - desc->cmd_cfg &= ~CMD_CFG_DATA_IO; >>>>>>>> - cmd_cfg_timeout = ilog2(SD_EMMC_CMD_TIMEOUT); >>>>>>>> + cmd_cfg |= ilog2(SD_EMMC_CMD_TIMEOUT) << >>>>>>>> CMD_CFG_TIMEOUT_SHIFT; >>>>>>>> + cmd_cfg |= CMD_CFG_END_OF_CHAIN; >>>>>>>> + desc[0].cmd_cfg = cmd_cfg; >>>>>>>> + desc[0].cmd_arg = cmd->arg; >>>>>>>> + desc[0].cmd_resp = 0; >>>>>>>> + desc[0].cmd_data = 0; >>>>>>>> } >>>>>>>> - desc->cmd_cfg |= (cmd_cfg_timeout & CMD_CFG_TIMEOUT_MASK) << >>>>>>>> - CMD_CFG_TIMEOUT_SHIFT; >>>>>>>> >>>>>>>> host->cmd = cmd; >>>>>>>> >>>>>>>> - /* Last descriptor */ >>>>>>>> - desc->cmd_cfg |= CMD_CFG_END_OF_CHAIN; >>>>>>>> - writel(desc->cmd_cfg, host->regs + SD_EMMC_CMD_CFG); >>>>>>>> - writel(desc->cmd_data, host->regs + SD_EMMC_CMD_DAT); >>>>>>>> - writel(desc->cmd_resp, host->regs + SD_EMMC_CMD_RSP); >>>>>>>> wmb(); /* ensure descriptor is written before kicked */ >>>>>>>> - writel(desc->cmd_arg, host->regs + SD_EMMC_CMD_ARG); >>>>>>>> + cfg = host->descs_dma_addr | START_DESC_BUSY; >>>>>>>> + writel(cfg, host->regs + SD_EMMC_START); >>>>>>>> } >>>>>>>> >>>>>>>> static void meson_mmc_request(struct mmc_host *mmc, struct >>>>>>>> mmc_request *mrq) >>>>>>>> { >>>>>>>> struct meson_host *host = mmc_priv(mmc); >>>>>>>> + bool needs_pre_post_req = mrq->data && >>>>>>>> !mrq->data->host_cookie; >>>>>>>> + >>>>>>>> + if (needs_pre_post_req) >>>>>>>> + meson_mmc_pre_req(mmc, mrq); >>>>>>>> >>>>>>>> /* Stop execution */ >>>>>>>> writel(0, host->regs + SD_EMMC_START); >>>>>>>> @@ -540,6 +568,9 @@ static void meson_mmc_request(struct >>>>>>>> mmc_host *mmc, struct mmc_request *mrq) >>>>>>>> meson_mmc_start_cmd(mmc, mrq->sbc); >>>>>>>> else >>>>>>>> meson_mmc_start_cmd(mmc, mrq->cmd); >>>>>>>> + >>>>>>>> + if (needs_pre_post_req) >>>>>>>> + meson_mmc_post_req(mmc, mrq, 0); >>>>>>>> } >>>>>>>> >>>>>>>> static void meson_mmc_read_resp(struct mmc_host *mmc, struct >>>>>>>> mmc_command *cmd) >>>>>>>> @@ -560,6 +591,7 @@ static irqreturn_t meson_mmc_irq(int irq, >>>>>>>> void *dev_id) >>>>>>>> { >>>>>>>> struct meson_host *host = dev_id; >>>>>>>> struct mmc_command *cmd; >>>>>>>> + struct mmc_data *data; >>>>>>>> u32 irq_en, status, raw_status; >>>>>>>> irqreturn_t ret = IRQ_HANDLED; >>>>>>>> >>>>>>>> @@ -571,6 +603,8 @@ static irqreturn_t meson_mmc_irq(int irq, >>>>>>>> void *dev_id) >>>>>>>> if (WARN_ON(!cmd)) >>>>>>>> return IRQ_NONE; >>>>>>>> >>>>>>>> + data = cmd->data; >>>>>>>> + >>>>>>>> spin_lock(&host->lock); >>>>>>>> irq_en = readl(host->regs + SD_EMMC_IRQ_EN); >>>>>>>> raw_status = readl(host->regs + SD_EMMC_STATUS); >>>>>>>> @@ -608,12 +642,17 @@ static irqreturn_t meson_mmc_irq(int irq, >>>>>>>> void *dev_id) >>>>>>>> dev_dbg(host->dev, "Unhandled IRQ: Descriptor timeout\n"); >>>>>>>> cmd->error = -ETIMEDOUT; >>>>>>>> } >>>>>>>> + >>>>>>>> + if (data && !cmd->error) >>>>>>>> + data->bytes_xfered = data->blksz * data->blocks; >>>>>>>> + >>>>>>>> if (status & IRQ_SDIO) >>>>>>>> dev_dbg(host->dev, "Unhandled IRQ: SDIO.\n"); >>>>>>>> >>>>>>>> - if (status & (IRQ_END_OF_CHAIN | IRQ_RESP_STATUS)) >>>>>>>> - ret = IRQ_WAKE_THREAD; >>>>>>>> - else { >>>>>>>> + if (status & (IRQ_END_OF_CHAIN | IRQ_RESP_STATUS)) { >>>>>>>> + if (meson_mmc_get_next_command(cmd)) >>>>>>>> + ret = IRQ_WAKE_THREAD; >>>>>>>> + } else { >>>>>>>> dev_warn(host->dev, "Unknown IRQ! status=0x%04x: MMC >>>>>>>> CMD%u arg=0x%08x flags=0x%08x stop=%d\n", >>>>>>>> status, cmd->opcode, cmd->arg, >>>>>>>> cmd->flags, cmd->mrq->stop ? 1 : 0); >>>>>>>> @@ -642,26 +681,12 @@ static irqreturn_t >>>>>>>> meson_mmc_irq_thread(int irq, void *dev_id) >>>>>>>> { >>>>>>>> struct meson_host *host = dev_id; >>>>>>>> struct mmc_command *next_cmd, *cmd = host->cmd; >>>>>>>> - struct mmc_data *data; >>>>>>>> - unsigned int xfer_bytes; >>>>>>>> >>>>>>>> if (WARN_ON(!cmd)) >>>>>>>> return IRQ_NONE; >>>>>>>> >>>>>>>> - data = cmd->data; >>>>>>>> - if (data && data->flags & MMC_DATA_READ) { >>>>>>>> - xfer_bytes = data->blksz * data->blocks; >>>>>>>> - WARN_ON(xfer_bytes > host->bounce_buf_size); >>>>>>>> - sg_copy_from_buffer(data->sg, data->sg_len, >>>>>>>> - host->bounce_buf, xfer_bytes); >>>>>>>> - data->bytes_xfered = xfer_bytes; >>>>>>>> - } >>>>>>>> - >>>>>>>> next_cmd = meson_mmc_get_next_command(cmd); >>>>>>>> - if (next_cmd) >>>>>>>> - meson_mmc_start_cmd(host->mmc, next_cmd); >>>>>>>> - else >>>>>>>> - meson_mmc_request_done(host->mmc, cmd->mrq); >>>>>>>> + meson_mmc_start_cmd(host->mmc, next_cmd); >>>>>>>> >>>>>>>> return IRQ_HANDLED; >>>>>>>> } >>>>>>>> @@ -695,6 +720,8 @@ static const struct mmc_host_ops >>>>>>>> meson_mmc_ops = { >>>>>>>> .request = meson_mmc_request, >>>>>>>> .set_ios = meson_mmc_set_ios, >>>>>>>> .get_cd = meson_mmc_get_cd, >>>>>>>> + .pre_req = meson_mmc_pre_req, >>>>>>>> + .post_req = meson_mmc_post_req, >>>>>>>> }; >>>>>>>> >>>>>>>> static int meson_mmc_probe(struct platform_device *pdev) >>>>>>>> @@ -774,15 +801,14 @@ static int meson_mmc_probe(struct >>>>>>>> platform_device *pdev) >>>>>>>> >>>>>>>> mmc->caps |= MMC_CAP_CMD23; >>>>>>>> mmc->max_blk_count = CMD_CFG_LENGTH_MASK; >>>>>>>> - mmc->max_req_size = mmc->max_blk_count * mmc->max_blk_size; >>>>>>>> - >>>>>>>> - /* data bounce buffer */ >>>>>>>> - host->bounce_buf_size = mmc->max_req_size; >>>>>>>> - host->bounce_buf = >>>>>>>> - dma_alloc_coherent(host->dev, host->bounce_buf_size, >>>>>>>> - &host->bounce_dma_addr, GFP_KERNEL); >>>>>>>> - if (host->bounce_buf == NULL) { >>>>>>>> - dev_err(host->dev, "Unable to map allocate DMA bounce >>>>>>>> buffer.\n"); >>>>>>>> + mmc->max_segs = PAGE_SIZE / sizeof(struct sd_emmc_desc); >>>>>>>> + mmc->max_seg_size = mmc->max_blk_count * mmc->max_blk_size; >>>>>>>> + mmc->max_req_size = mmc->max_seg_size * mmc->max_segs; >>>>>>>> + >>>>>>>> + host->descs = dma_alloc_coherent(host->dev, PAGE_SIZE, >>>>>>>> + &host->descs_dma_addr, GFP_KERNEL); >>>>>>>> + if (!host->descs) { >>>>>>>> + dev_err(host->dev, "Allocating descriptor DMA buffer >>>>>>>> failed\n"); >>>>>>>> ret = -ENOMEM; >>>>>>>> goto err_div_clk; >>>>>>>> } >>>>>>>> @@ -807,8 +833,8 @@ static int meson_mmc_remove(struct >>>>>>>> platform_device *pdev) >>>>>>>> /* disable interrupts */ >>>>>>>> writel(0, host->regs + SD_EMMC_IRQ_EN); >>>>>>>> >>>>>>>> - dma_free_coherent(host->dev, host->bounce_buf_size, >>>>>>>> - host->bounce_buf, host->bounce_dma_addr); >>>>>>>> + dma_free_coherent(host->dev, PAGE_SIZE, host->descs, >>>>>>>> + host->descs_dma_addr); >>>>>>>> >>>>>>>> clk_disable_unprepare(host->cfg_div_clk); >>>>>>>> clk_disable_unprepare(host->core_clk); >>>>>>>> >>>>>>> >>>>>>> compared to the patches 1...5 there is absolutely no change to >>>>>>> patches 1, 2, 4 and the above. Neither syslog nor performance. >>>>>>> >>>>>> Thanks for re-testing. I have a little bit of a hard time to >>>>>> understand why SD and eMMC mode >>>>>> are working but SDIO (at least with brcfmac) is not. Especially as >>>>>> I don't have HW to test SDIO mode on. >>>>>> >>>>>> After patches 1, 2, 4 the system is still working normally? >>>>>> And would it be possible for you to compile a DEBUG kernel and >>>>>> post the mmc/brcmfmac related output? >>>>>> In DEBUG mode mode brcmfmac driver logs all SDIO transfers. >>>>>> >>>>>> Last but not least, could you please post /proc/interrupts ? This >>>>>> would give an idea whether any SDIO >>>>>> or just specific ones fail. >>>>>> >>>>>> Thanks, Heiner >>>>>> >>>>>>> regards >>>>>>> Helmut >>>>>>> >>>>>> >>>>>> >>>>> >>>>> i enabled the debug flags for mmc and brcmfmac in the kernel >>>>> configuration. >>>>> For the test i also changed meson-gx-mmc from built-in to module. >>>>> This resulted in a different order of the mmc devices. The >>>>> sdio/wifi is now mmc0 and not mmc1 >>>>> >>>>> Without your new patch the wifi adapter works normally. >>>>> >>>>> The debug info was produced with following commad sequence >>>>> dmesg -n 8 >>>>> dmesg -D >>>>> logger "loading meson-gx-mmc...." >>>>> modprobe meson-gx-mmc >>>>> sleep 1 >>>>> logger "loading brcmfmac" >>>>> modprobe brcmfmac >>>>> logger "modules loaded" >>>>> sleep 1 >>>>> cp /var/log/syslog ~/syslog >>>>> cp /proc/interrupts ~/interrupts >>>>> >>>>> and filtered with: egrep "brcmfmac|mmc0|meson-gx-mmc" >>>>> >>>>> because of the length of the files i removed most lines of the >>>>> loading of meson-gx-mmc >>>>> >>>>> unhandled interrupts: independent of the number of applied patches >>>>> i've always got 11 of them. >>>>> Only the timings differed with the applied patches >>>>> >>>>> the is the log for applied patches 1, 2, 4 & the new one >>>>> [ 47.371608] mmc0: starting CMD52 arg 0020d000 flags 00000195 >>>>> [ 47.371616] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 47.371621] mmc0: starting CMD52 arg 0020d200 flags 00000195 >>>>> [ 47.371629] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 47.371635] mmc0: starting CMD52 arg 0020d400 flags 00000195 >>>>> [ 47.371642] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 47.371648] mmc0: starting CMD52 arg 0020d600 flags 00000195 >>>>> [ 47.371656] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 47.371662] mmc0: starting CMD52 arg 0020d800 flags 00000195 >>>>> [ 47.371670] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 47.371679] mmc0: starting CMD52 arg 0020da00 flags 00000195 >>>>> [ 47.371687] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 47.371694] mmc0: starting CMD52 arg 0020dc00 flags 00000195 >>>>> [ 47.371702] mmc0: req done (CMD52): 0: 000010ff 00000000 >>>>> 00000000 00000000 >>>>> [ 47.371716] mmc0: new high speed SDIO card at address 0001 >>>>> [ 47.372210] meson-gx-mmc d0074000.mmc: Unhandled IRQ: Response >>>>> timeout >>>>> [ 47.373142] meson-gx-mmc d0074000.mmc: Unhandled IRQ: Response >>>>> timeout >>>>> [ 47.374077] meson-gx-mmc d0074000.mmc: Unhandled IRQ: Response >>>>> timeout >>>>> [ 47.375021] meson-gx-mmc d0074000.mmc: Unhandled IRQ: Response >>>>> timeout >>>>> [ 47.375950] meson-gx-mmc d0074000.mmc: Unhandled IRQ: Response >>>>> timeout >>>>> [ 47.376859] meson-gx-mmc d0074000.mmc: Unhandled IRQ: Response >>>>> timeout >>>>> [ 47.377770] meson-gx-mmc d0074000.mmc: Unhandled IRQ: Response >>>>> timeout >>>>> [ 47.496509] meson-gx-mmc d0074000.mmc: change clock rate >>>>> 400000 -> 52000000 >>>>> [ 47.496541] meson-gx-mmc d0074000.mmc: divider requested rate >>>>> 52000000 != actual rate 50000000 >>>>> [ 47.496602] meson-gx-mmc d0074000.mmc: meson_mmc_set_ios: >>>>> SD_EMMC_CFG: 0x00004890 -> 0x00004892 >>>>> [ 47.497276] meson-gx-mmc d0074000.mmc: meson_mmc_set_ios: >>>>> SD_EMMC_CFG: 0x00004892 -> 0x00004896 >>>>> loading brcmfmac >>>>> [ 48.731368] brcmfmac: brcmfmac_module_init No platform data >>>>> available. >>>>> [ 48.731451] mmc0: starting CMD52 arg 80022040 flags 00000195 >>>>> [ 48.731471] mmc0: req done (CMD52): 0: 00001040 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731489] mmc0: starting CMD52 arg 80022200 flags 00000195 >>>>> [ 48.731499] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731507] brcmfmac: brcmf_ops_sdio_probe Enter >>>>> [ 48.731510] brcmfmac: brcmf_ops_sdio_probe Class=0 >>>>> [ 48.731512] brcmfmac: brcmf_ops_sdio_probe sdio vendor ID: 0x02d0 >>>>> [ 48.731515] brcmfmac: brcmf_ops_sdio_probe sdio device ID: 0x4330 >>>>> [ 48.731517] brcmfmac: brcmf_ops_sdio_probe Function#: 1 >>>>> [ 48.731538] mmc0: starting CMD52 arg 80042000 flags 00000195 >>>>> [ 48.731548] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731555] mmc0: starting CMD52 arg 80042202 flags 00000195 >>>>> [ 48.731564] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731580] brcmfmac: brcmf_ops_sdio_probe Enter >>>>> [ 48.731582] brcmfmac: brcmf_ops_sdio_probe Class=0 >>>>> [ 48.731584] brcmfmac: brcmf_ops_sdio_probe sdio vendor ID: 0x02d0 >>>>> [ 48.731586] brcmfmac: brcmf_ops_sdio_probe sdio device ID: 0x4330 >>>>> [ 48.731588] brcmfmac: brcmf_ops_sdio_probe Function#: 2 >>>>> [ 48.731593] brcmfmac: brcmf_ops_sdio_probe F2 found, calling >>>>> brcmf_sdiod_probe... >>>>> [ 48.731596] mmc0: starting CMD52 arg 80022040 flags 00000195 >>>>> [ 48.731606] mmc0: req done (CMD52): 0: 00001040 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731613] mmc0: starting CMD52 arg 80022200 flags 00000195 >>>>> [ 48.731622] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731629] mmc0: starting CMD52 arg 80042000 flags 00000195 >>>>> [ 48.731638] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731644] mmc0: starting CMD52 arg 80042202 flags 00000195 >>>>> [ 48.731653] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731661] SDIO: Enabling device mmc0:0001:1... >>>>> [ 48.731664] mmc0: starting CMD52 arg 00000400 flags 00000195 >>>>> [ 48.731673] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731680] mmc0: starting CMD52 arg 80000402 flags 00000195 >>>>> [ 48.731689] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731697] mmc0: starting CMD52 arg 00000600 flags 00000195 >>>>> [ 48.731706] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731713] SDIO: Enabled device mmc0:0001:1 >>>>> [ 48.731717] brcmfmac: brcmf_sdio_probe Enter >>>>> [ 48.731795] brcmfmac: brcmf_sdiod_regrl addr:0x18000000 >>>>> [ 48.731800] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000a, nbytes=1 >>>>> [ 48.731804] mmc0: starting CMD52 arg 92001400 flags 00000195 >>>>> [ 48.731813] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731821] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000b, nbytes=1 >>>>> [ 48.731824] mmc0: starting CMD52 arg 92001600 flags 00000195 >>>>> [ 48.731833] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731840] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000c, nbytes=1 >>>>> [ 48.731843] mmc0: starting CMD52 arg 92001818 flags 00000195 >>>>> [ 48.731851] mmc0: req done (CMD52): 0: 00001018 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731858] brcmfmac: brcmf_sdiod_request_data rw=0, func=1, >>>>> addr=0x08000, nbytes=4 >>>>> [ 48.731863] mmc0: starting CMD53 arg 15000004 flags 000001b5 >>>>> [ 48.731866] mmc0: blksz 4 blocks 1 flags 00000200 tsac >>>>> 1000 ms nsac 0 >>>>> [ 48.731878] mmc0: req done (CMD53): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731881] mmc0: 4 bytes transferred: 0 >>>>> [ 48.731887] brcmfmac: brcmf_sdiod_regrl >>>>> data:0x00000000 <<<<===== wrong! >>>>> [ 48.731890] brcmfmac: F1 signature read @0x18000000=0x 0 >>>>> [ 48.731892] brcmfmac: brcmf_sdiod_regwb addr:0x0001000e, >>>>> data:0x28 >>>>> [ 48.731895] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> [ 48.731898] mmc0: starting CMD52 arg 92001c28 flags 00000195 >>>>> [ 48.731906] mmc0: req done (CMD52): 0: 00001028 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731912] brcmfmac: brcmf_sdiod_regrb addr:0x0001000e >>>>> [ 48.731915] brcmfmac: brcmf_sdiod_request_data rw=0, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> [ 48.731918] mmc0: starting CMD52 arg 12001c00 flags 00000195 >>>>> [ 48.731926] mmc0: req done (CMD52): 0: 00001068 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731931] brcmfmac: brcmf_sdiod_regrb data:0x68 >>>>> [ 48.731936] brcmfmac: brcmf_sdiod_regwb addr:0x0001000e, >>>>> data:0x28 >>>>> [ 48.731938] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> [ 48.731941] mmc0: starting CMD52 arg 92001c28 flags 00000195 >>>>> [ 48.731950] mmc0: req done (CMD52): 0: 00001028 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731957] brcmfmac: brcmf_sdiod_regrb addr:0x0001000e >>>>> [ 48.731960] brcmfmac: brcmf_sdiod_request_data rw=0, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> [ 48.731962] mmc0: starting CMD52 arg 12001c00 flags 00000195 >>>>> [ 48.731970] mmc0: req done (CMD52): 0: 00001068 00000000 >>>>> 00000000 00000000 >>>>> [ 48.731985] brcmfmac: brcmf_sdiod_regrb data:0x68 >>>>> [ 48.731987] brcmfmac: brcmf_sdiod_regrb addr:0x0001000e >>>>> [ 48.731990] brcmfmac: brcmf_sdiod_request_data rw=0, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> [ 48.731993] mmc0: starting CMD52 arg 12001c00 flags 00000195 >>>>> [ 48.732001] mmc0: req done (CMD52): 0: 00001068 00000000 >>>>> 00000000 00000000 >>>>> [ 48.732019] brcmfmac: brcmf_sdiod_regrb data:0x68 >>>>> [ 48.732021] brcmfmac: brcmf_sdiod_regwb addr:0x0001000e, >>>>> data:0x21 >>>>> [ 48.732024] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> [ 48.732027] mmc0: starting CMD52 arg 92001c21 flags 00000195 >>>>> [ 48.732037] mmc0: req done (CMD52): 0: 00001021 00000000 >>>>> 00000000 00000000 >>>>> [ 48.732151] brcmfmac: brcmf_sdiod_regwb addr:0x0001000f, >>>>> data:0x00 >>>>> [ 48.732160] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000f, nbytes=1 >>>>> [ 48.732167] mmc0: starting CMD52 arg 92001e00 flags 00000195 >>>>> [ 48.732181] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.732193] brcmfmac: brcmf_sdiod_regrl addr:0x18000000 >>>>> [ 48.732200] brcmfmac: brcmf_sdiod_request_data rw=0, func=1, >>>>> addr=0x08000, nbytes=4 >>>>> [ 48.732208] mmc0: starting CMD53 arg 15000004 flags 000001b5 >>>>> [ 48.732214] mmc0: blksz 4 blocks 1 flags 00000200 tsac >>>>> 1000 ms nsac 0 >>>>> [ 48.732228] mmc0: req done (CMD53): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.732235] mmc0: 4 bytes transferred: 0 >>>>> [ 48.732246] brcmfmac: brcmf_sdiod_regrl data:0x00000000 >>>>> [ 48.732254] brcmfmac: brcmf_chip_recognition found SB chip: >>>>> BCM0, rev=0 >>>>> [ 48.732260] brcmfmac: brcmf_chip_recognition: SB chip is not >>>>> supported >>>>> [ 48.732266] brcmfmac: brcmf_sdio_probe_attach: >>>>> brcmf_chip_attach failed! >>>>> [ 48.732273] brcmfmac: brcmf_sdio_probe: >>>>> brcmf_sdio_probe_attach failed >>>>> [ 48.732280] brcmfmac: brcmf_sdio_remove Enter >>>>> [ 48.732285] brcmfmac: brcmf_sdiod_intr_unregister Entering >>>>> oob=0 sd=0 >>>>> [ 48.732290] brcmfmac: brcmf_detach Enter >>>>> [ 48.733671] brcmfmac: brcmf_sdio_remove Disconnected >>>>> [ 48.733683] SDIO: Disabling device mmc0:0001:2... >>>>> [ 48.733689] mmc0: starting CMD52 arg 00000400 flags 00000195 >>>>> [ 48.733709] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 48.733717] mmc0: starting CMD52 arg 80000402 flags 00000195 >>>>> [ 48.733727] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 48.733732] SDIO: Disabled device mmc0:0001:2 >>>>> [ 48.733736] SDIO: Disabling device mmc0:0001:1... >>>>> [ 48.733739] mmc0: starting CMD52 arg 00000400 flags 00000195 >>>>> [ 48.733749] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 48.733760] mmc0: starting CMD52 arg 80000400 flags 00000195 >>>>> [ 48.733768] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 48.733773] SDIO: Disabled device mmc0:0001:1 >>>>> [ 48.733777] brcmfmac: brcmf_ops_sdio_probe: F2 error, probe >>>>> failed -19... >>>>> >>>>> this is the debug data for applied patches 1,2 & 4 (left only few >>>>> lines after the first CMD53) >>>>> [ 52.458082] mmc0: starting CMD52 arg 0020d000 flags 00000195 >>>>> [ 52.458093] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 52.458098] mmc0: starting CMD52 arg 0020d200 flags 00000195 >>>>> [ 52.458108] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 52.458116] mmc0: starting CMD52 arg 0020d400 flags 00000195 >>>>> [ 52.458130] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 52.458135] mmc0: starting CMD52 arg 0020d600 flags 00000195 >>>>> [ 52.458147] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 52.458152] mmc0: starting CMD52 arg 0020d800 flags 00000195 >>>>> [ 52.458165] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 52.458171] mmc0: starting CMD52 arg 0020da00 flags 00000195 >>>>> [ 52.458187] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 52.458193] mmc0: starting CMD52 arg 0020dc00 flags 00000195 >>>>> [ 52.458204] mmc0: req done (CMD52): 0: 000010ff 00000000 >>>>> 00000000 00000000 >>>>> [ 52.458217] mmc0: new high speed SDIO card at address 0001 >>>>> [ 52.560803] meson-gx-mmc d0074000.mmc: change clock rate >>>>> 400000 -> 52000000 >>>>> [ 52.560834] meson-gx-mmc d0074000.mmc: divider requested rate >>>>> 52000000 != actual rate 50000000 >>>>> [ 52.560900] meson-gx-mmc d0074000.mmc: meson_mmc_set_ios: >>>>> SD_EMMC_CFG: 0x00004890 -> 0x00004892 >>>>> [ 52.561583] meson-gx-mmc d0074000.mmc: meson_mmc_set_ios: >>>>> SD_EMMC_CFG: 0x00004892 -> 0x00004896 >>>>> loading brcmfmac >>>>> [ 53.796217] brcmfmac: brcmfmac_module_init No platform data >>>>> available. >>>>> [ 53.796291] mmc0: starting CMD52 arg 80022040 flags 00000195 >>>>> [ 53.796327] mmc0: req done (CMD52): 0: 00001040 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796336] mmc0: starting CMD52 arg 80022200 flags 00000195 >>>>> [ 53.796349] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796366] brcmfmac: brcmf_ops_sdio_probe Enter >>>>> [ 53.796368] brcmfmac: brcmf_ops_sdio_probe Class=0 >>>>> [ 53.796370] brcmfmac: brcmf_ops_sdio_probe sdio vendor ID: 0x02d0 >>>>> [ 53.796372] brcmfmac: brcmf_ops_sdio_probe sdio device ID: 0x4330 >>>>> [ 53.796375] brcmfmac: brcmf_ops_sdio_probe Function#: 1 >>>>> [ 53.796398] mmc0: starting CMD52 arg 80042000 flags 00000195 >>>>> [ 53.796414] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796422] mmc0: starting CMD52 arg 80042202 flags 00000195 >>>>> [ 53.796436] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796444] brcmfmac: brcmf_ops_sdio_probe Enter >>>>> [ 53.796446] brcmfmac: brcmf_ops_sdio_probe Class=0 >>>>> [ 53.796448] brcmfmac: brcmf_ops_sdio_probe sdio vendor ID: 0x02d0 >>>>> [ 53.796450] brcmfmac: brcmf_ops_sdio_probe sdio device ID: 0x4330 >>>>> [ 53.796452] brcmfmac: brcmf_ops_sdio_probe Function#: 2 >>>>> [ 53.796458] brcmfmac: brcmf_ops_sdio_probe F2 found, calling >>>>> brcmf_sdiod_probe... >>>>> [ 53.796461] mmc0: starting CMD52 arg 80022040 flags 00000195 >>>>> [ 53.796478] mmc0: req done (CMD52): 0: 00001040 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796489] mmc0: starting CMD52 arg 80022200 flags 00000195 >>>>> [ 53.796502] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796509] mmc0: starting CMD52 arg 80042000 flags 00000195 >>>>> [ 53.796521] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796527] mmc0: starting CMD52 arg 80042202 flags 00000195 >>>>> [ 53.796541] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796550] SDIO: Enabling device mmc0:0001:1... >>>>> [ 53.796552] mmc0: starting CMD52 arg 00000400 flags 00000195 >>>>> [ 53.796564] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796570] mmc0: starting CMD52 arg 80000402 flags 00000195 >>>>> [ 53.796583] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796589] mmc0: starting CMD52 arg 00000600 flags 00000195 >>>>> [ 53.796600] mmc0: req done (CMD52): 0: 00001002 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796605] SDIO: Enabled device mmc0:0001:1 >>>>> [ 53.796609] brcmfmac: brcmf_sdio_probe Enter >>>>> [ 53.796686] brcmfmac: brcmf_sdiod_regrl addr:0x18000000 >>>>> [ 53.796691] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000a, nbytes=1 >>>>> [ 53.796695] mmc0: starting CMD52 arg 92001400 flags 00000195 >>>>> [ 53.796707] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796715] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000b, nbytes=1 >>>>> [ 53.796718] mmc0: starting CMD52 arg 92001600 flags 00000195 >>>>> [ 53.796729] mmc0: req done (CMD52): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796743] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000c, nbytes=1 >>>>> [ 53.796746] mmc0: starting CMD52 arg 92001818 flags 00000195 >>>>> [ 53.796758] mmc0: req done (CMD52): 0: 00001018 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796801] brcmfmac: brcmf_sdiod_request_data rw=0, func=1, >>>>> addr=0x08000, nbytes=4 >>>>> [ 53.796807] mmc0: starting CMD53 arg 15000004 flags 000001b5 >>>>> [ 53.796810] mmc0: blksz 4 blocks 1 flags 00000200 tsac >>>>> 1000 ms nsac 0 >>>>> [ 53.796826] mmc0: req done (CMD53): 0: 00001000 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796829] mmc0: 4 bytes transferred: 0 >>>>> [ 53.796836] brcmfmac: brcmf_sdiod_regrl >>>>> data:0x16044330 <<<<<====== ok >>>>> [ 53.796839] brcmfmac: F1 signature read @0x18000000=0x16044330 >>>>> [ 53.796841] brcmfmac: brcmf_sdiod_regwb addr:0x0001000e, >>>>> data:0x28 >>>>> [ 53.796844] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> [ 53.796847] mmc0: starting CMD52 arg 92001c28 flags 00000195 >>>>> [ 53.796858] mmc0: req done (CMD52): 0: 00001028 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796872] brcmfmac: brcmf_sdiod_regrb addr:0x0001000e >>>>> [ 53.796875] brcmfmac: brcmf_sdiod_request_data rw=0, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> [ 53.796878] mmc0: starting CMD52 arg 12001c00 flags 00000195 >>>>> [ 53.796890] mmc0: req done (CMD52): 0: 00001068 00000000 >>>>> 00000000 00000000 >>>>> [ 53.796897] brcmfmac: brcmf_sdiod_regrb data:0x68 >>>>> [ 53.796902] brcmfmac: brcmf_sdiod_regwb addr:0x0001000e, >>>>> data:0x28 >>>>> [ 53.796905] brcmfmac: brcmf_sdiod_request_data rw=1, func=1, >>>>> addr=0x1000e, nbytes=1 >>>>> >>>>> if you need more data: just ask ;-) >>>>> >>>> Thanks a lot for the logs. So the first read returns 0 instead of >>>> the actual register value. >>>> Could you please apply the following on top of 1, 2, 4, new one and >>>> send the log? >>>> I hope the two debug messages bring me closer to the root cause of >>>> the issue. >>>> >>>> Rgds, Heiner >>>> >>>> >>>> diff --git a/drivers/mmc/host/meson-gx-mmc.c >>>> b/drivers/mmc/host/meson-gx-mmc.c >>>> index 3b3ddf3e..d6d2d1a1 100644 >>>> --- a/drivers/mmc/host/meson-gx-mmc.c >>>> +++ b/drivers/mmc/host/meson-gx-mmc.c >>>> @@ -613,6 +613,9 @@ static void meson_mmc_start_cmd(struct mmc_host >>>> *mmc, struct mmc_command *cmd) >>>> for_each_sg(data->sg, sg, data->sg_count, i) { >>>> unsigned int len = sg_dma_len(sg); >>>> >>>> + if (cmd->opcode == 53) >>>> + dev_info(host->info, "cmd 53: idx %d len %u\n", i, >>>> len); >>>> + >>>> if (data->blocks > 1) >>>> len /= data->blksz; >>>> >>>> @@ -709,6 +712,9 @@ static irqreturn_t meson_mmc_irq(int irq, void >>>> *dev_id) >>>> >>>> meson_mmc_read_resp(host->mmc, cmd); >>>> >>>> + if (cmd->opcode == 53) >>>> + dev_info(host->dev, "cmd 53: cmd_data_0: %08x\n", >>>> host->descs[0].cmd_data); >>>> + >>>> cmd->error = 0; >>>> if (status & IRQ_RXD_ERR_MASK) { >>>> dev_dbg(host->dev, "Unhandled IRQ: RXD error\n"); >>>> >>> >>> here is the output: >>> [ 107.510508] brcmfmac: brcmf_sdiod_request_data rw=0, func=1, >>> addr=0x08000, nbytes=4 >>> [ 107.510513] mmc0: starting CMD53 arg 15000004 flags 000001b5 >>> [ 107.510516] mmc0: blksz 4 blocks 1 flags 00000200 tsac 1000 ms >>> nsac 0 >>> [ 107.510525] meson-gx-mmc d0070000.mmc: cmd 53: idx 0 len 4 >>> [ 107.510535] meson-gx-mmc d0070000.mmc: cmd 53: cmd_data_0: 721d0eb4 >>> [ 107.510539] mmc0: req done (CMD53): 0: 00001000 00000000 00000000 >>> 00000000 >>> [ 107.510541] mmc0: 4 bytes transferred: 0 >>> [ 107.510548] brcmfmac: brcmf_sdiod_regrl data:0x00000000 >>> >>> Helmut >>> >>> >> Weird .. Everything looks ok so far. I don't see a reason why this >> small read DMA returns >> zeroed bytes only whilst bigger ones in SD/eMMC work perfectly fine. >> >> OK, one last attempt before I have to think about a better way to >> tackle this issue. >> >> Could you please replace the last logging extension patch with this one? >> (I just added a memory barrier to be sure to read the actual value.) >> >> Thanks, Heiner >> >> >> diff --git a/drivers/mmc/host/meson-gx-mmc.c >> b/drivers/mmc/host/meson-gx-mmc.c >> index ca685902..5b511944 100644 >> --- a/drivers/mmc/host/meson-gx-mmc.c >> +++ b/drivers/mmc/host/meson-gx-mmc.c >> @@ -523,6 +523,9 @@ static void meson_mmc_start_cmd(struct mmc_host >> *mmc, struct mmc_command *cmd) >> for_each_sg(data->sg, sg, data->sg_count, i) { >> unsigned int len = sg_dma_len(sg); >> >> + if (cmd->opcode == 53) >> + pr_info("sg: idx %d len %u\n", i, len); >> + >> if (data->blocks > 1) >> len /= data->blksz; >> >> @@ -619,6 +622,11 @@ static irqreturn_t meson_mmc_irq(int irq, void >> *dev_id) >> >> meson_mmc_read_resp(host->mmc, cmd); >> >> + if (cmd->opcode == 53) { >> + dma_rmb(); >> + pr_info("cmd 53 cmd_data0: %08x\n", host->descs[0].cmd_data); >> + } >> + >> cmd->error = 0; >> if (status & IRQ_RXD_ERR_MASK) { >> dev_dbg(host->dev, "Unhandled IRQ: RXD error\n"); >> > > the output is not really different (for the 2 cmd53) > [ 37.113577] sg: idx 0 len 4 > [ 37.113595] meson-gx-mmc d0070000.mmc: cmd 53 cmd_data0: 72091ab4 > [ 37.114016] sg: idx 0 len 4 > [ 37.114034] meson-gx-mmc d0070000.mmc: cmd 53 cmd_data0: 72091ab4 > > Helmut I've added my own debugging code to both variations of the driver. but without a positiv result here are the patches for the fully operational version the filtered logs are identical up and including the 2nd cmd53. Helmut --- a/drivers/mmc/host/meson-gx-mmc.c 2017-03-18 15:22:31.000000000 +0100 +++ b/drivers/mmc/host/meson-gx-mmc.c 2017-03-20 13:02:05.254762191 +0100 @@ -468,6 +468,9 @@ static void meson_mmc_start_cmd(struct m /* data? */ if (cmd->data) { + + dev_dbg(host->dev, "DBG data"); + desc->cmd_cfg |= CMD_CFG_DATA_IO; if (cmd->data->blocks > 1) { desc->cmd_cfg |= CMD_CFG_BLOCK_MODE; @@ -526,6 +529,10 @@ static void meson_mmc_start_cmd(struct m writel(desc->cmd_data, host->regs + SD_EMMC_CMD_DAT); writel(desc->cmd_resp, host->regs + SD_EMMC_CMD_RSP); wmb(); /* ensure descriptor is written before kicked */ + + dev_dbg(host->dev, "DBG cmd_cfg: 0x%08x, arg: 0x%08x, resp: 0x%08x", + desc->cmd_cfg, desc->cmd_arg, desc->cmd_resp); + writel(desc->cmd_arg, host->regs + SD_EMMC_CMD_ARG); } @@ -576,6 +583,8 @@ static irqreturn_t meson_mmc_irq(int irq raw_status = readl(host->regs + SD_EMMC_STATUS); status = raw_status & irq_en; + dev_dbg(host->dev, "DBG status 0x%08x", status); + if (!status) { dev_warn(host->dev, "Spurious IRQ! status=0x%08x, irq_en=0x%08x\n", raw_status, irq_en); and this is for the version with the sdio problem --- a/drivers/mmc/host/meson-gx-mmc.c 2017-03-20 12:50:32.956474080 +0100 +++ b/drivers/mmc/host/meson-gx-mmc.c 2017-03-20 12:57:27.185837225 +0100 @@ -493,6 +493,9 @@ static void meson_mmc_start_cmd(struct m } if (data) { + + dev_dbg(host->dev, "DBG data"); + cmd_cfg |= CMD_CFG_DATA_IO; if (data->blocks > 1) { @@ -549,6 +552,10 @@ static void meson_mmc_start_cmd(struct m host->cmd = cmd; wmb(); /* ensure descriptor is written before kicked */ + + dev_dbg(host->dev, "DBG cmd_cfg: 0x%08x, arg: 0x%08x, resp: 0x%08x", + desc[0].cmd_cfg, desc[0].cmd_arg, desc[0].cmd_resp); + cfg = host->descs_dma_addr | START_DESC_BUSY; writel(cfg, host->regs + SD_EMMC_START); } @@ -610,6 +617,8 @@ static irqreturn_t meson_mmc_irq(int irq raw_status = readl(host->regs + SD_EMMC_STATUS); status = raw_status & irq_en; + dev_dbg(host->dev, "DBG status 0x%08x", status); + if (!status) { dev_warn(host->dev, "Spurious IRQ! status=0x%08x, irq_en=0x%08x\n", raw_status, irq_en);