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net/qede/base: support periodic Doorbell Recovery

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Add support for periodic Doorbell Recovery.

Signed-off-by: Rasesh Mody <rasesh.mody@cavium.com>
This commit is contained in:
Rasesh Mody 2018-09-29 08:14:33 +00:00 committed by Ferruh Yigit
parent cf84de8657
commit 15dfc1ecb3
3 changed files with 31 additions and 18 deletions
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1
drivers/net/qede/base/bcm_osal.h
View File

@ -454,5 +454,6 @@ u32 qede_crc32(u32 crc, u8 *ptr, u32 length);
#define OSAL_DIV_S64(a, b) ((a) / (b))
#define OSAL_LLDP_RX_TLVS(p_hwfn, tlv_buf, tlv_size) nothing
#define OSAL_DBG_ALLOC_USER_DATA(p_hwfn, user_data_ptr) (0)
#define OSAL_DB_REC_OCCURRED(p_hwfn) nothing
#endif /* __BCM_OSAL_H */

37
drivers/net/qede/base/ecore_int.c
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@ -428,13 +428,13 @@ ecore_general_attention_35(struct ecore_hwfn *p_hwfn)
#define ECORE_DORQ_ATTENTION_SIZE_MASK (0x7f)
#define ECORE_DORQ_ATTENTION_SIZE_SHIFT (16)
#define ECORE_DB_REC_COUNT 10
#define ECORE_DB_REC_COUNT 1000
#define ECORE_DB_REC_INTERVAL 100
static enum _ecore_status_t ecore_db_rec_flush_queue(struct ecore_hwfn *p_hwfn,
struct ecore_ptt *p_ptt)
{
u8 count = ECORE_DB_REC_COUNT;
u32 count = ECORE_DB_REC_COUNT;
u32 usage = 1;
/* wait for usage to zero or count to run out. This is necessary since
@ -463,12 +463,19 @@ static enum _ecore_status_t ecore_db_rec_flush_queue(struct ecore_hwfn *p_hwfn,
return ECORE_SUCCESS;
}
/* assumes sticky overflow indication was set for this PF */
static enum _ecore_status_t ecore_db_rec_attn(struct ecore_hwfn *p_hwfn,
struct ecore_ptt *p_ptt)
enum _ecore_status_t ecore_db_rec_handler(struct ecore_hwfn *p_hwfn,
struct ecore_ptt *p_ptt)
{
u32 overflow;
enum _ecore_status_t rc;
overflow = ecore_rd(p_hwfn, p_ptt, DORQ_REG_PF_OVFL_STICKY);
DP_NOTICE(p_hwfn, false, "PF Overflow sticky 0x%x\n", overflow);
if (!overflow) {
ecore_db_recovery_execute(p_hwfn, DB_REC_ONCE);
return ECORE_SUCCESS;
}
if (ecore_edpm_enabled(p_hwfn)) {
rc = ecore_db_rec_flush_queue(p_hwfn, p_ptt);
if (rc != ECORE_SUCCESS)
@ -491,8 +498,7 @@ static enum _ecore_status_t ecore_db_rec_attn(struct ecore_hwfn *p_hwfn,
static enum _ecore_status_t ecore_dorq_attn_cb(struct ecore_hwfn *p_hwfn)
{
u32 int_sts, first_drop_reason, details, address, overflow,
all_drops_reason;
u32 int_sts, first_drop_reason, details, address, all_drops_reason;
struct ecore_ptt *p_ptt = p_hwfn->p_dpc_ptt;
enum _ecore_status_t rc;
@ -518,8 +524,6 @@ static enum _ecore_status_t ecore_dorq_attn_cb(struct ecore_hwfn *p_hwfn)
DORQ_REG_DB_DROP_DETAILS);
address = ecore_rd(p_hwfn, p_ptt,
DORQ_REG_DB_DROP_DETAILS_ADDRESS);
overflow = ecore_rd(p_hwfn, p_ptt,
DORQ_REG_PF_OVFL_STICKY);
all_drops_reason = ecore_rd(p_hwfn, p_ptt,
DORQ_REG_DB_DROP_DETAILS_REASON);
@ -530,19 +534,16 @@ static enum _ecore_status_t ecore_dorq_attn_cb(struct ecore_hwfn *p_hwfn)
"FID\t\t0x%04x\t\t(Opaque FID)\n"
"Size\t\t0x%04x\t\t(in bytes)\n"
"1st drop reason\t0x%08x\t(details on first drop since last handling)\n"
"Sticky reasons\t0x%08x\t(all drop reasons since last handling)\n"
"Overflow\t0x%x\t\t(a per PF indication)\n",
"Sticky reasons\t0x%08x\t(all drop reasons since last handling)\n",
address,
GET_FIELD(details, ECORE_DORQ_ATTENTION_OPAQUE),
GET_FIELD(details, ECORE_DORQ_ATTENTION_SIZE) * 4,
first_drop_reason, all_drops_reason, overflow);
first_drop_reason, all_drops_reason);
/* if this PF caused overflow, initiate recovery */
if (overflow) {
rc = ecore_db_rec_attn(p_hwfn, p_ptt);
if (rc != ECORE_SUCCESS)
return rc;
}
rc = ecore_db_rec_handler(p_hwfn, p_ptt);
OSAL_DB_REC_OCCURRED(p_hwfn);
if (rc != ECORE_SUCCESS)
return rc;
/* clear the doorbell drop details and prepare for next drop */
ecore_wr(p_hwfn, p_ptt, DORQ_REG_DB_DROP_DETAILS_REL, 0);

11
drivers/net/qede/base/ecore_int_api.h
View File

@ -343,4 +343,15 @@ enum _ecore_status_t ecore_int_get_sb_dbg(struct ecore_hwfn *p_hwfn,
enum _ecore_status_t
ecore_int_igu_relocate_sb(struct ecore_hwfn *p_hwfn, struct ecore_ptt *p_ptt,
u16 sb_id, bool b_to_vf);
/**
* @brief - Doorbell Recovery handler.
* Run DB_REAL_DEAL doorbell recovery in case of PF overflow
* (and flush DORQ if needed), otherwise run DB_REC_ONCE.
*
* @param p_hwfn
* @param p_ptt
*/
enum _ecore_status_t ecore_db_rec_handler(struct ecore_hwfn *p_hwfn,
struct ecore_ptt *p_ptt);
#endif