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| author | Yanbo Li <yanbol@qti.qualcomm.com> | 2014-11-25 12:24:48 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2014-11-26 08:40:04 +0200 |
| commit | 9f65ad25b0ac725286250191d86b3238313fa55d (patch) | |
| tree | 4cd64b3e8916c6f3ca89b77873a375ecdb6b2315 /drivers/net/wireless/ath/ath10k/hif.h | |
| parent | 077a380447160d94031c51e863ca4c53d2c74730 (diff) | |
| download | linux-9f65ad25b0ac725286250191d86b3238313fa55d.tar.bz2 | |
ath10k: add memory dump debugfs interface
Add mem_val debugfs file for dumping the firmware (target) memory and also for
writing to the memory. The firmware memory is accessed through one file which
uses position of the file as the firmware memory address. For example, with dd
use skip parameter for the address.
Beucase target memory width is 32 bits it's strongly recommended to use
blocksize divisable with 4 when using this interface. For example, when using
dd use bs=4 to set the block size to 4 and remember to divide both count and
skip values with four.
To read 4 kB chunk from address 0x400000:
dd if=mem_value bs=4 count=1024 skip=1048576 | xxd -g1
To write value 0x01020304 to address 0x400400:
echo 0x01020304 | xxd -r | dd of=mem_value bs=4 seek=1048832
To read 4 KB chunk of memory and then write back after edit:
dd if=mem_value of=tmp.bin bs=4 count=1024 skip=1048576
emacs tmp.bin
dd if=tmp.bin of=mem_value bs=4 count=1024 seek=1048576
Signed-off-by: Yanbo Li <yanbol@qti.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/hif.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/hif.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath10k/hif.h b/drivers/net/wireless/ath/ath10k/hif.h index bad071906540..6ac552304546 100644 --- a/drivers/net/wireless/ath/ath10k/hif.h +++ b/drivers/net/wireless/ath/ath10k/hif.h @@ -48,6 +48,8 @@ struct ath10k_hif_ops { int (*diag_read)(struct ath10k *ar, u32 address, void *buf, size_t buf_len); + int (*diag_write)(struct ath10k *ar, u32 address, const void *data, + int nbytes); /* * API to handle HIF-specific BMI message exchanges, this API is * synchronous and only allowed to be called from a context that @@ -113,6 +115,15 @@ static inline int ath10k_hif_diag_read(struct ath10k *ar, u32 address, void *buf return ar->hif.ops->diag_read(ar, address, buf, buf_len); } +static inline int ath10k_hif_diag_write(struct ath10k *ar, u32 address, + const void *data, int nbytes) +{ + if (!ar->hif.ops->diag_write) + return -EOPNOTSUPP; + + return ar->hif.ops->diag_write(ar, address, data, nbytes); +} + static inline int ath10k_hif_exchange_bmi_msg(struct ath10k *ar, void *request, u32 request_len, void *response, u32 *response_len) |