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rsi: SDIO Rx packet processing enhancement

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Newer firmware sends information about number of blocks through
interrupt only. We don't need to read extra register for this.
This patch adds needed driver changes for this enhancment. The
change here is backward compatible

Signed-off-by: Karun Eagalapati <karun256@gmail.com>
Signed-off-by: Amitkumar Karwar <amit.karwar@redpinesignals.com>
Signed-off-by: Prameela Rani Garnepudi <prameela.j04cs@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Karun Eagalapati 2017-07-06 20:07:22 +05:30 • committed by Kalle Valo
parent 72bccf51d4
commit ebf084ea0e
3 changed files with 28 additions and 8 deletions
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34
drivers/net/wireless/rsi/rsi_91x_sdio_ops.c
View file

@ -69,20 +69,37 @@ int rsi_sdio_master_access_msword(struct rsi_hw *adapter, u16 ms_word)
static int rsi_process_pkt(struct rsi_common *common)
{
struct rsi_hw *adapter = common->priv;
struct rsi_91x_sdiodev *dev =
(struct rsi_91x_sdiodev *)adapter->rsi_dev;
u8 num_blks = 0;
u32 rcv_pkt_len = 0;
int status = 0;
u8 value = 0;
status = rsi_sdio_read_register(adapter,
SDIO_RX_NUM_BLOCKS_REG,
&num_blks);
num_blks = ((adapter->interrupt_status & 1) |
((adapter->interrupt_status >> RECV_NUM_BLOCKS) << 1));
if (status) {
rsi_dbg(ERR_ZONE,
"%s: Failed to read pkt length from the card:\n",
__func__);
return status;
if (!num_blks) {
status = rsi_sdio_read_register(adapter,
SDIO_RX_NUM_BLOCKS_REG,
&value);
if (status) {
rsi_dbg(ERR_ZONE,
"%s: Failed to read pkt length from the card:\n",
__func__);
return status;
}
num_blks = value & 0x1f;
}
if (dev->write_fail == 2)
rsi_sdio_ack_intr(common->priv, (1 << MSDU_PKT_PENDING));
if (unlikely(!num_blks)) {
dev->write_fail = 2;
return -1;
}
rcv_pkt_len = (num_blks * 256);
common->rx_data_pkt = kmalloc(rcv_pkt_len, GFP_KERNEL);
@ -224,6 +241,7 @@ void rsi_interrupt_handler(struct rsi_hw *adapter)
mutex_unlock(&common->tx_rxlock);
return;
}
adapter->interrupt_status = isr_status;
if (isr_status == 0) {
rsi_set_event(&common->tx_thread.event);

1
drivers/net/wireless/rsi/rsi_main.h
View file

@ -275,6 +275,7 @@ struct rsi_hw {
bool blcmd_timer_expired;
u32 flash_capacity;
struct eepromrw_info eeprom;
u32 interrupt_status;
u8 dfs_region;
void *rsi_dev;
struct rsi_host_intf_ops *host_intf_ops;

1
drivers/net/wireless/rsi/rsi_sdio.h
View file

@ -41,6 +41,7 @@ enum sdio_interrupt_type {
#define PKT_BUFF_FULL 1
#define PKT_MGMT_BUFF_FULL 2
#define MSDU_PKT_PENDING 3
#define RECV_NUM_BLOCKS 4
/* Interrupt Bit Related Macros */
#define PKT_BUFF_AVAILABLE 1
#define FW_ASSERT_IND 2