Thanks Gwendal! We will test your changes. Are you still experiencing the "request_firmware" failure?
Alex > -----Original Message----- > From: Gwendal Grignou [mailto:[email protected]] > Sent: Thursday, July 10, 2014 4:08 PM > To: Avi Shchislowski; [email protected]; [email protected] > Cc: [email protected]; Alex Lemberg; [email protected]; > [email protected]; [email protected]; Yaniv Iarovici; Gwendal Grignou > Subject: [PATCH] Fix on top of sandisk patches. > > To apply on top of > [RFC PATCH 1/1 v7]mmc: Support-FFU-for-eMMC-v5.0 > > Signed-off-by: Gwendal Grignou <[email protected]> > --- > > Avi, > > As I mentioned earlier, I found several problems with your patch. > Here is a patch that allows to go further. > It is still not working reliably. The eMMC I am using has a problem being > reseted after upgrade, and I am still hitting what appears to be memory > corruptions. I believe the issues I am still having are due to the kernel > code, > not the eMMC I am testing. > > Gwendal. > > drivers/mmc/card/block.c | 3 +- > drivers/mmc/card/ffu.c | 121 +++++++++++++++++++++++-------------------- > ---- > drivers/mmc/core/mmc.c | 8 ++++ > include/linux/mmc/card.h | 1 + > include/linux/mmc/ffu.h | 13 +---- > 5 files changed, 71 insertions(+), 75 deletions(-) > > diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index > fc65a6c..9d866fb 100644 > --- a/drivers/mmc/card/block.c > +++ b/drivers/mmc/card/block.c > @@ -504,8 +504,7 @@ static int mmc_blk_ioctl_cmd(struct block_device > *bdev, > mmc_get_card(card); > > if (cmd.opcode == MMC_FFU_DOWNLOAD_OP) { > - err = mmc_ffu_download(card, &cmd , idata->buf, > - idata->buf_bytes); > + err = mmc_ffu_download(card, idata->buf); > goto cmd_rel_host; > } > > diff --git a/drivers/mmc/card/ffu.c b/drivers/mmc/card/ffu.c index > 04e07a5..0e85b2b 100644 > --- a/drivers/mmc/card/ffu.c > +++ b/drivers/mmc/card/ffu.c > @@ -63,15 +63,13 @@ struct mmc_ffu_area { > > static void mmc_ffu_prepare_mrq(struct mmc_card *card, > struct mmc_request *mrq, struct scatterlist *sg, unsigned int sg_len, > - u32 arg, unsigned int blocks, unsigned int blksz, int write) { > + u32 arg, unsigned int blocks, unsigned int blksz) { > BUG_ON(!mrq || !mrq->cmd || !mrq->data || !mrq->stop); > > if (blocks > 1) { > - mrq->cmd->opcode = write ? > - MMC_WRITE_MULTIPLE_BLOCK : > MMC_READ_MULTIPLE_BLOCK; > + mrq->cmd->opcode = MMC_WRITE_MULTIPLE_BLOCK; > } else { > - mrq->cmd->opcode = write ? MMC_WRITE_BLOCK : > - MMC_READ_SINGLE_BLOCK; > + mrq->cmd->opcode = MMC_WRITE_BLOCK; > } > > mrq->cmd->arg = arg; > @@ -89,11 +87,12 @@ static void mmc_ffu_prepare_mrq(struct mmc_card > *card, > > mrq->data->blksz = blksz; > mrq->data->blocks = blocks; > - mrq->data->flags = write ? MMC_DATA_WRITE : MMC_DATA_READ; > + mrq->data->flags = MMC_DATA_WRITE; > mrq->data->sg = sg; > mrq->data->sg_len = sg_len; > > - mmc_set_data_timeout(mrq->data, card); } > + mmc_set_data_timeout(mrq->data, card); } > > /* > * Checks that a normal transfer didn't have any errors @@ -153,7 +152,7 > @@ static int mmc_ffu_wait_busy(struct mmc_card *card) { > */ > static int mmc_ffu_simple_transfer(struct mmc_card *card, > struct scatterlist *sg, unsigned int sg_len, u32 arg, > - unsigned int blocks, unsigned int blksz, int write) { > + unsigned int blocks, unsigned int blksz) { > struct mmc_request mrq = {0}; > struct mmc_command cmd = {0}; > struct mmc_command stop = {0}; > @@ -162,8 +161,7 @@ static int mmc_ffu_simple_transfer(struct mmc_card > *card, > mrq.cmd = &cmd; > mrq.data = &data; > mrq.stop = &stop; > - mmc_ffu_prepare_mrq(card, &mrq, sg, sg_len, arg, blocks, blksz, > - write); > + mmc_ffu_prepare_mrq(card, &mrq, sg, sg_len, arg, blocks, blksz); > mmc_wait_for_req(card->host, &mrq); > > mmc_ffu_wait_busy(card); > @@ -175,19 +173,17 @@ static int mmc_ffu_simple_transfer(struct > mmc_card *card, > * Map memory into a scatterlist. > */ > static unsigned int mmc_ffu_map_sg(struct mmc_ffu_mem *mem, int size, > - struct scatterlist *sglist, unsigned int max_segs, > - unsigned int max_seg_sz) > + struct scatterlist *sglist) > { > struct scatterlist *sg = sglist; > unsigned int i; > unsigned long sz = size; > - unsigned int sctr_len = 0; > unsigned long len; > > - sg_init_table(sglist, max_segs); > + sg_init_table(sglist, mem->cnt); > > - for (i = 0; i < mem->cnt && sz; i++, sz -= len) { > - len = PAGE_SIZE * (1 << mem->arr[i].order); > + for (i = 0; i < mem->cnt && sz; i++, sg++, sz -= len) { > + len = PAGE_SIZE << mem->arr[i].order; > > if (len > sz) { > len = sz; > @@ -195,12 +191,10 @@ static unsigned int mmc_ffu_map_sg(struct > mmc_ffu_mem *mem, int size, > } > > sg_set_page(sg, mem->arr[i].page, len, 0); > - sg = sg_next(sg); > - sctr_len += 1; > } > sg_mark_end(sg); > > - return sctr_len; > + return mem->cnt; > } > > static void mmc_ffu_free_mem(struct mmc_ffu_mem *mem) { @@ -277,6 > +271,8 @@ static struct mmc_ffu_mem *mmc_ffu_alloc_mem(unsigned > long min_sz, > mem->arr[mem->cnt].page = page; > mem->arr[mem->cnt].order = order; > mem->cnt += 1; > + pr_debug("FFU: cnt: %d - order %d\n", mem->cnt, order); > + > if (max_page_cnt <= (1UL << order)) > break; > max_page_cnt -= 1UL << order; > @@ -298,11 +294,11 @@ out_free: > * Copy the data to the allocated pages. > */ > static int mmc_ffu_area_init(struct mmc_ffu_area *area, struct mmc_card > *card, > - u8 *data, int size) > + const u8 *data, int size) > { > int ret; > int i; > - int length = 0; > + int length = 0, page_length; > > area->max_tfr = size; > > @@ -323,20 +319,20 @@ static int mmc_ffu_area_init(struct mmc_ffu_area > *area, struct mmc_card *card, > goto out_free; > } > > + page_length = PAGE_SIZE << area->mem->arr[i].order; > memcpy(page_address(area->mem->arr[i].page), data + > length, > - min(size - length, (int)area->max_seg_sz)); > - length += area->max_seg_sz; > + min(size - length, page_length)); > + length += page_length; > } > > area->sg = kmalloc(sizeof(struct scatterlist) * area->mem->cnt, > - GFP_KERNEL); > + GFP_KERNEL); > if (!area->sg) { > ret = -ENOMEM; > goto out_free; > } > > - area->sg_len = mmc_ffu_map_sg(area->mem, size, area->sg, > - area->max_segs, area->mem->cnt); > + area->sg_len = mmc_ffu_map_sg(area->mem, size, area->sg); > > return 0; > > @@ -345,7 +341,7 @@ out_free: > return ret; > } > > -static int mmc_ffu_write(struct mmc_card *card, u8 *src, u32 arg, > +static int mmc_ffu_write(struct mmc_card *card, const u8 *src, u32 arg, > int size) > { > int rc; > @@ -370,7 +366,8 @@ static int mmc_ffu_write(struct mmc_card *card, u8 > *src, u32 arg, > goto exit; > > rc = mmc_ffu_simple_transfer(card, area.sg, area.sg_len, arg, > - max_tfr / CARD_BLOCK_SIZE, CARD_BLOCK_SIZE, 1); > + max_tfr / CARD_BLOCK_SIZE, CARD_BLOCK_SIZE); > + mmc_ffu_area_cleanup(&area); > if (rc != 0) > goto exit; > > @@ -379,7 +376,6 @@ static int mmc_ffu_write(struct mmc_card *card, u8 > *src, u32 arg, > } while (size > 0); > > exit: > - mmc_ffu_area_cleanup(&area); > return rc; > } > > @@ -406,47 +402,39 @@ exit: > return err; > } > > -int mmc_ffu_download(struct mmc_card *card, struct mmc_command > *cmd, > - u8 *data, int buf_bytes) > +int mmc_ffu_download(struct mmc_card *card, const char *name) > { > u8 ext_csd[CARD_BLOCK_SIZE]; > int err; > int ret; > - u8 *buf = NULL; > + u32 arg; > const struct firmware *fw; > > - /* Read the EXT_CSD */ > - err = mmc_send_ext_csd(card, ext_csd); > - if (err) { > - pr_err("FFU: %s: error %d sending ext_csd\n", > - mmc_hostname(card->host), err); > + pr_debug("FFU: %s uploading firmware %.20s to device\n", > + mmc_hostname(card->host), name); > + > + if (strlen(name) > 512) { > + err = -EINVAL; > + pr_err("FFU: %s: %.20s is not a valid argument\n", > + mmc_hostname(card->host), name); > goto exit; > } > > - /* check if card is eMMC 5.0 or higher */ > - if (card->ext_csd.rev < 7) > - return -EINVAL; > - > /* Check if FFU is supported */ > - if (!FFU_SUPPORTED_MODE(ext_csd[EXT_CSD_SUPPORTED_MODE]) > || > - FFU_CONFIG(ext_csd[EXT_CSD_FW_CONFIG])) { > - err = -EINVAL; > + if (!card->ext_csd.ffu_capable) { > + err = -EOPNOTSUPP; > pr_err("FFU: %s: error %d FFU is not supported\n", > mmc_hostname(card->host), err); > goto exit; > } > > - /* setup FW data buffer */ > - err = request_firmware(&fw, data, &card->dev); > + /* setup FW name buffer */ > + mmc_put_card(card); > + err = request_firmware(&fw, name, &card->dev); > + mmc_get_card(card); > if (err) { > pr_err("Firmware request failed %d\n", err); > - goto exit_normal; > - } > - > - buf = kmalloc(fw->size, GFP_KERNEL); > - if (buf == NULL) { > - pr_err("Allocating memory for firmware failed!\n"); > - goto exit_normal; > + goto exit; > } > > if ((fw->size % CARD_BLOCK_SIZE)) { > @@ -454,9 +442,16 @@ int mmc_ffu_download(struct mmc_card *card, > struct mmc_command *cmd, > mmc_hostname(card->host), fw->size); > } > > - memcpy(buf, fw->data, fw->size); > + /* Read the EXT_CSD */ > + err = mmc_send_ext_csd(card, ext_csd); > + if (err) { > + pr_err("FFU: %s: error %d sending ext_csd\n", > + mmc_hostname(card->host), err); > + goto exit; > + } > > /* set device to FFU mode */ > + pr_debug("FFU: %s switch to FFU mode\n", mmc_hostname(card- > >host)); > err = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, > EXT_CSD_MODE_CONFIG, > MMC_FFU_MODE_SET, card->ext_csd.generic_cmd6_time); > if (err) { > @@ -466,18 +461,18 @@ int mmc_ffu_download(struct mmc_card *card, > struct mmc_command *cmd, > } > > /* set CMD ARG */ > - cmd->arg = ext_csd[EXT_CSD_FFU_ARG] | > + arg = ext_csd[EXT_CSD_FFU_ARG] | > ext_csd[EXT_CSD_FFU_ARG + 1] << 8 | > ext_csd[EXT_CSD_FFU_ARG + 2] << 16 | > ext_csd[EXT_CSD_FFU_ARG + 3] << 24; > > - err = mmc_ffu_write(card, buf, cmd->arg, (int)fw->size); > + err = mmc_ffu_write(card, fw->data, arg, (int)fw->size); > > exit_normal: > release_firmware(fw); > - kfree(buf); > > /* host switch back to work in normal MMC Read/Write commands > */ > + pr_debug("FFU: %s switch to normal mode\n", mmc_hostname(card- > >host)); > ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL, > EXT_CSD_MODE_CONFIG, MMC_FFU_MODE_NORMAL, > card->ext_csd.generic_cmd6_time); > @@ -495,6 +490,8 @@ int mmc_ffu_install(struct mmc_card *card) > u32 ffu_data_len; > u32 timeout; > > + pr_debug("FFU: %s installing firmware to device\n", > + mmc_hostname(card->host)); > err = mmc_send_ext_csd(card, ext_csd); > if (err) { > pr_err("FFU: %s: error %d sending ext_csd\n", @@ -503,9 > +500,8 @@ int mmc_ffu_install(struct mmc_card *card) > } > > /* Check if FFU is supported */ > - if (!FFU_SUPPORTED_MODE(ext_csd[EXT_CSD_SUPPORTED_MODE]) > || > - FFU_CONFIG(ext_csd[EXT_CSD_FW_CONFIG])) { > - err = -EINVAL; > + if (!card->ext_csd.ffu_capable) { > + err = -EOPNOTSUPP; > pr_err("FFU: %s: error %d FFU is not supported\n", > mmc_hostname(card->host), err); > goto exit; > @@ -514,19 +510,20 @@ int mmc_ffu_install(struct mmc_card *card) > /* check mode operation */ > if (!FFU_FEATURES(ext_csd[EXT_CSD_FFU_FEATURES])) { > /* restart the eMMC */ > + mmc_put_card(card); > err = mmc_ffu_restart(card); > + mmc_get_card(card); > if (err) { > pr_err("FFU: %s: error %d FFU install:\n", > mmc_hostname(card->host), err); > } > } else { > - > ffu_data_len = > ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG]| > ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG + 1] << > 8 | > ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG + 2] << > 16 | > ext_csd[EXT_CSD_NUM_OF_FW_SEC_PROG + 3] << > 24; > > - if (!ffu_data_len) { > + if (ffu_data_len == 0) { > err = -EPERM; > return err; > } > diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index > 4099424..ace9123 100644 > --- a/drivers/mmc/core/mmc.c > +++ b/drivers/mmc/core/mmc.c > @@ -552,6 +552,14 @@ static int mmc_read_ext_csd(struct mmc_card > *card, u8 *ext_csd) > card->ext_csd.data_sector_size = 512; > } > > + /* eMMC v5 or later */ > + if (card->ext_csd.rev >= 7) { > + card->ext_csd.ffu_capable = > + ((ext_csd[EXT_CSD_SUPPORTED_MODE] & 1) == 1) > && > + ((ext_csd[EXT_CSD_FW_CONFIG] & 1) == 0); > + } else { > + card->ext_csd.ffu_capable = false; > + } > out: > return err; > } > diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h index > 6a5c754..6a7de8d 100644 > --- a/include/linux/mmc/card.h > +++ b/include/linux/mmc/card.h > @@ -87,6 +87,7 @@ struct mmc_ext_csd { > unsigned int data_tag_unit_size; /* DATA TAG UNIT size */ > unsigned int boot_ro_lock; /* ro lock support */ > bool boot_ro_lockable; > + bool ffu_capable; /* support Firmware Field > Upgrade */ > u8 raw_exception_status; /* 54 */ > u8 raw_partition_support; /* 160 */ > u8 raw_rpmb_size_mult; /* 168 */ > diff --git a/include/linux/mmc/ffu.h b/include/linux/mmc/ffu.h index > f5dcedb..a0ade1b 100644 > --- a/include/linux/mmc/ffu.h > +++ b/include/linux/mmc/ffu.h > @@ -34,19 +34,10 @@ > #define MMC_FFU_INSTALL_SET 0x1 > > #ifdef CONFIG_MMC_FFU > -#define MMC_FFU_ENABLE 0x0 > -#define MMC_FFU_CONFIG 0x1 > -#define MMC_FFU_SUPPORTED_MODES 0x1 > #define MMC_FFU_FEATURES 0x1 > +#define FFU_FEATURES(ffu_features) (ffu_features & MMC_FFU_FEATURES) > > -#define FFU_ENABLED(ffu_enable) (ffu_enable & MMC_FFU_CONFIG) > -#define FFU_SUPPORTED_MODE(ffu_sup_mode) \ > - (ffu_sup_mode && MMC_FFU_SUPPORTED_MODES) > -#define FFU_CONFIG(ffu_config) (ffu_config & MMC_FFU_CONFIG) - > #define FFU_FEATURES(ffu_fetures) (ffu_fetures & MMC_FFU_FEATURES) > - > -int mmc_ffu_download(struct mmc_card *card, struct mmc_command > *cmd, > - u8 *data, int buf_bytes); > +int mmc_ffu_download(struct mmc_card *card, const char *name); > int mmc_ffu_install(struct mmc_card *card); #else static inline int > mmc_ffu_download(struct mmc_card *card, > -- > 2.0.0.526.g5318336 -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
