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wil6210: fix eDMA RX chaining

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HW requires Rx buffers to be 4 bytes aligned. Modify the driver to
meet this requirement.
Enable OFU rdy valid bug fix, to prevent hang in oful34_rx while
there is back-pressure from host during RX.

Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Maya Erez 2018-07-24 10:44:40 +03:00 committed by Kalle Valo
parent d554edcd97
commit 1bb38e8bb8
3 changed files with 15 additions and 7 deletions
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7
drivers/net/wireless/ath/wil6210/main.c
View File

@ -1614,6 +1614,13 @@ int wil_reset(struct wil6210_priv *wil, bool load_fw)
wil->txrx_ops.configure_interrupt_moderation(wil);
/* Enable OFU rdy valid bug fix, to prevent hang in oful34_rx
* while there is back-pressure from Host during RX
*/
if (wil->hw_version >= HW_VER_TALYN_MB)
wil_s(wil, RGF_DMA_MISC_CTL,
BIT_OFUL34_RDY_VALID_BUG_FIX_EN);
rc = wil_restore_vifs(wil);
if (rc) {
wil_err(wil, "failed to restore vifs, rc %d\n", rc);

13
drivers/net/wireless/ath/wil6210/txrx_edma.c
View File

@ -27,6 +27,8 @@
#include "trace.h"
#define WIL_EDMA_MAX_DATA_OFFSET (2)
/* RX buffer size must be aligned to 4 bytes */
#define WIL_EDMA_RX_BUF_LEN_DEFAULT (2048)
static void wil_tx_desc_unmap_edma(struct device *dev,
union wil_tx_desc *desc,
@ -158,8 +160,7 @@ static int wil_ring_alloc_skb_edma(struct wil6210_priv *wil,
struct wil_ring *ring, u32 i)
{
struct device *dev = wil_to_dev(wil);
unsigned int sz = wil->rx_buf_len + ETH_HLEN +
WIL_EDMA_MAX_DATA_OFFSET;
unsigned int sz = ALIGN(wil->rx_buf_len, 4);
dma_addr_t pa;
u16 buff_id;
struct list_head *active = &wil->rx_buff_mgmt.active;
@ -600,7 +601,7 @@ static bool wil_is_rx_idle_edma(struct wil6210_priv *wil)
static void wil_rx_buf_len_init_edma(struct wil6210_priv *wil)
{
wil->rx_buf_len = rx_large_buf ?
WIL_MAX_ETH_MTU : TXRX_BUF_LEN_DEFAULT - WIL_MAX_MPDU_OVERHEAD;
WIL_MAX_ETH_MTU : WIL_EDMA_RX_BUF_LEN_DEFAULT;
}
static int wil_rx_init_edma(struct wil6210_priv *wil, u16 desc_ring_size)
@ -633,8 +634,7 @@ static int wil_rx_init_edma(struct wil6210_priv *wil, u16 desc_ring_size)
wil_rx_buf_len_init_edma(wil);
max_rx_pl_per_desc = wil->rx_buf_len + ETH_HLEN +
WIL_EDMA_MAX_DATA_OFFSET;
max_rx_pl_per_desc = ALIGN(wil->rx_buf_len, 4);
/* Use debugfs dbg_num_rx_srings if set, reserve one sring for TX */
if (wil->num_rx_status_rings > WIL6210_MAX_STATUS_RINGS - 1)
@ -869,8 +869,7 @@ static struct sk_buff *wil_sring_reap_rx_edma(struct wil6210_priv *wil,
struct sk_buff *skb;
dma_addr_t pa;
struct wil_ring_rx_data *rxdata = &sring->rx_data;
unsigned int sz = wil->rx_buf_len + ETH_HLEN +
WIL_EDMA_MAX_DATA_OFFSET;
unsigned int sz = ALIGN(wil->rx_buf_len, 4);
struct wil_net_stats *stats = NULL;
u16 dmalen;
int cid;

2
drivers/net/wireless/ath/wil6210/wil6210.h
View File

@ -302,6 +302,8 @@ struct RGF_ICR {
#define BIT_DMA_ITR_RX_IDL_CNT_CTL_FOREVER BIT(2)
#define BIT_DMA_ITR_RX_IDL_CNT_CTL_CLR BIT(3)
#define BIT_DMA_ITR_RX_IDL_CNT_CTL_REACHED_TRESH BIT(4)
#define RGF_DMA_MISC_CTL (0x881d6c)
#define BIT_OFUL34_RDY_VALID_BUG_FIX_EN BIT(7)
#define RGF_DMA_PSEUDO_CAUSE (0x881c68)
#define RGF_DMA_PSEUDO_CAUSE_MASK_SW (0x881c6c)