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wil6210: enhancements for descriptor and status ring debugfs

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Add printing of hwhead as part of desc ring and status ring debugfs.
Validate wil->rx_buff_mgmt and ring->ctx arrays before accessing them.
Dump Tx descriptor content even when it indicates invalid buff_id.

Signed-off-by: Dedy Lansky <dlansky@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Dedy Lansky 2019-04-26 18:43:33 +03:00 committed by Kalle Valo
parent a7feb56f20
commit 9a874d0454
2 changed files with 45 additions and 12 deletions
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52
drivers/net/wireless/ath/wil6210/debugfs.c
View File

@ -63,7 +63,9 @@ static void wil_print_desc_edma(struct seq_file *s, struct wil6210_priv *wil,
&ring->va[idx].rx.enhanced;
u16 buff_id = le16_to_cpu(rx_d->mac.buff_id);
has_skb = wil->rx_buff_mgmt.buff_arr[buff_id].skb;
if (wil->rx_buff_mgmt.buff_arr &&
wil_val_in_range(buff_id, 0, wil->rx_buff_mgmt.size))
has_skb = wil->rx_buff_mgmt.buff_arr[buff_id].skb;
seq_printf(s, "%c", (has_skb) ? _h : _s);
} else {
struct wil_tx_enhanced_desc *d =
@ -71,9 +73,9 @@ static void wil_print_desc_edma(struct seq_file *s, struct wil6210_priv *wil,
&ring->va[idx].tx.enhanced;
num_of_descs = (u8)d->mac.d[2];
has_skb = ring->ctx[idx].skb;
has_skb = ring->ctx && ring->ctx[idx].skb;
if (num_of_descs >= 1)
seq_printf(s, "%c", ring->ctx[idx].skb ? _h : _s);
seq_printf(s, "%c", has_skb ? _h : _s);
else
/* num_of_descs == 0, it's a frag in a list of descs */
seq_printf(s, "%c", has_skb ? 'h' : _s);
@ -84,7 +86,7 @@ static void wil_print_ring(struct seq_file *s, struct wil6210_priv *wil,
const char *name, struct wil_ring *ring,
char _s, char _h)
{
void __iomem *x = wmi_addr(wil, ring->hwtail);
void __iomem *x;
u32 v;
seq_printf(s, "RING %s = {\n", name);
@ -96,7 +98,21 @@ static void wil_print_ring(struct seq_file *s, struct wil6210_priv *wil,
else
seq_printf(s, " swtail = %d\n", ring->swtail);
seq_printf(s, " swhead = %d\n", ring->swhead);
if (wil->use_enhanced_dma_hw) {
int ring_id = ring->is_rx ?
WIL_RX_DESC_RING_ID : ring - wil->ring_tx;
/* SUBQ_CONS is a table of 32 entries, one for each Q pair.
* lower 16bits are for even ring_id and upper 16bits are for
* odd ring_id
*/
x = wmi_addr(wil, RGF_DMA_SCM_SUBQ_CONS + 4 * (ring_id / 2));
v = readl_relaxed(x);
v = (ring_id % 2 ? (v >> 16) : (v & 0xffff));
seq_printf(s, " hwhead = %u\n", v);
}
seq_printf(s, " hwtail = [0x%08x] -> ", ring->hwtail);
x = wmi_addr(wil, ring->hwtail);
if (x) {
v = readl(x);
seq_printf(s, "0x%08x = %d\n", v, v);
@ -188,7 +204,7 @@ DEFINE_SHOW_ATTRIBUTE(ring);
static void wil_print_sring(struct seq_file *s, struct wil6210_priv *wil,
struct wil_status_ring *sring)
{
void __iomem *x = wmi_addr(wil, sring->hwtail);
void __iomem *x;
int sring_idx = sring - wil->srings;
u32 v;
@ -199,7 +215,19 @@ static void wil_print_sring(struct seq_file *s, struct wil6210_priv *wil,
seq_printf(s, " size = %d\n", sring->size);
seq_printf(s, " elem_size = %zu\n", sring->elem_size);
seq_printf(s, " swhead = %d\n", sring->swhead);
if (wil->use_enhanced_dma_hw) {
/* COMPQ_PROD is a table of 32 entries, one for each Q pair.
* lower 16bits are for even ring_id and upper 16bits are for
* odd ring_id
*/
x = wmi_addr(wil, RGF_DMA_SCM_COMPQ_PROD + 4 * (sring_idx / 2));
v = readl_relaxed(x);
v = (sring_idx % 2 ? (v >> 16) : (v & 0xffff));
seq_printf(s, " hwhead = %u\n", v);
}
seq_printf(s, " hwtail = [0x%08x] -> ", sring->hwtail);
x = wmi_addr(wil, sring->hwtail);
if (x) {
v = readl_relaxed(x);
seq_printf(s, "0x%08x = %d\n", v, v);
@ -1091,19 +1119,18 @@ static int txdesc_show(struct seq_file *s, void *data)
if (wil->use_enhanced_dma_hw) {
if (tx) {
skb = ring->ctx[txdesc_idx].skb;
} else {
skb = ring->ctx ? ring->ctx[txdesc_idx].skb : NULL;
} else if (wil->rx_buff_mgmt.buff_arr) {
struct wil_rx_enhanced_desc *rx_d =
(struct wil_rx_enhanced_desc *)
&ring->va[txdesc_idx].rx.enhanced;
u16 buff_id = le16_to_cpu(rx_d->mac.buff_id);
if (!wil_val_in_range(buff_id, 0,
wil->rx_buff_mgmt.size)) {
wil->rx_buff_mgmt.size))
seq_printf(s, "invalid buff_id %d\n", buff_id);
return 0;
}
skb = wil->rx_buff_mgmt.buff_arr[buff_id].skb;
else
skb = wil->rx_buff_mgmt.buff_arr[buff_id].skb;
}
} else {
skb = ring->ctx[txdesc_idx].skb;
@ -1136,7 +1163,7 @@ static int status_msg_show(struct seq_file *s, void *data)
struct wil6210_priv *wil = s->private;
int sring_idx = dbg_sring_index;
struct wil_status_ring *sring;
bool tx = sring_idx == wil->tx_sring_idx ? 1 : 0;
bool tx;
u32 status_msg_idx = dbg_status_msg_index;
u32 *u;
@ -1146,6 +1173,7 @@ static int status_msg_show(struct seq_file *s, void *data)
}
sring = &wil->srings[sring_idx];
tx = !sring->is_rx;
if (!sring->va) {
seq_printf(s, "No %cX status ring\n", tx ? 'T' : 'R');

5
drivers/net/wireless/ath/wil6210/wil6210.h
View File

@ -335,6 +335,11 @@ struct RGF_ICR {
#define BIT_BOOT_FROM_ROM BIT(31)
/* eDMA */
#define RGF_SCM_PTRS_SUBQ_RD_PTR (0x8b4000)
#define RGF_SCM_PTRS_COMPQ_RD_PTR (0x8b4100)
#define RGF_DMA_SCM_SUBQ_CONS (0x8b60ec)
#define RGF_DMA_SCM_COMPQ_PROD (0x8b616c)
#define RGF_INT_COUNT_ON_SPECIAL_EVT (0x8b62d8)
#define RGF_INT_CTRL_INT_GEN_CFG_0 (0x8bc000)