meson-gx-mmc: 2nd patch set
Helmut Klein
hgkr.klein at gmail.com
Sun Mar 19 04:23:57 PDT 2017
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 ;-)
regards
Helmut
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