From 76bb24efdc5de8eead0ccc07ec7e3b59a4ca0f15 Mon Sep 17 00:00:00 2001 From: James Smart Date: Sat, 27 Oct 2007 13:38:00 -0400 Subject: [PATCH] [SCSI] lpfc 8.2.3 : Internal loopback fixes Internal loopback fixes: - Use HBQs rather than Q_RING_BUFF - Correct HBQs continuation entries - Update CT handler to SLI3 iocbs Signed-off-by: James Smart Signed-off-by: James Bottomley --- drivers/scsi/lpfc/lpfc.h | 7 ++ drivers/scsi/lpfc/lpfc_crtn.h | 5 ++ drivers/scsi/lpfc/lpfc_hw.h | 31 +++++++-- drivers/scsi/lpfc/lpfc_sli.c | 123 ++++++++++++++++++++++++++++++++-- 4 files changed, 153 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h index 636a930a5739..46ccdffb46aa 100644 --- a/drivers/scsi/lpfc/lpfc.h +++ b/drivers/scsi/lpfc/lpfc.h @@ -68,6 +68,7 @@ struct lpfc_dmabuf { struct list_head list; void *virt; /* virtual address ptr */ dma_addr_t phys; /* mapped address */ + uint32_t buffer_tag; /* used for tagged queue ring */ }; struct lpfc_dma_pool { @@ -582,6 +583,12 @@ struct lpfc_hba { unsigned long last_completion_time; struct timer_list hb_tmofunc; uint8_t hb_outstanding; + /* + * Following bit will be set for all buffer tags which are not + * associated with any HBQ. + */ +#define QUE_BUFTAG_BIT (1<<31) + uint32_t buffer_tag_count; }; static inline struct Scsi_Host * diff --git a/drivers/scsi/lpfc/lpfc_crtn.h b/drivers/scsi/lpfc/lpfc_crtn.h index 338b5dd10a92..87bea176ac05 100644 --- a/drivers/scsi/lpfc/lpfc_crtn.h +++ b/drivers/scsi/lpfc/lpfc_crtn.h @@ -211,6 +211,11 @@ int lpfc_sli_ringpostbuf_put(struct lpfc_hba *, struct lpfc_sli_ring *, struct lpfc_dmabuf *lpfc_sli_ringpostbuf_get(struct lpfc_hba *, struct lpfc_sli_ring *, dma_addr_t); + +uint32_t lpfc_sli_get_buffer_tag(struct lpfc_hba *); +struct lpfc_dmabuf * lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *, + struct lpfc_sli_ring *, uint32_t ); + int lpfc_sli_hbq_count(void); int lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *, uint32_t); int lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *, uint32_t); diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h index 8635b9294640..b61e45a1310d 100644 --- a/drivers/scsi/lpfc/lpfc_hw.h +++ b/drivers/scsi/lpfc/lpfc_hw.h @@ -1373,6 +1373,7 @@ typedef struct { /* FireFly BIU registers */ #define CMD_FCP_TRECEIVE64_CX 0xA1 #define CMD_FCP_TRSP64_CX 0xA3 +#define CMD_QUE_XRI64_CX 0xB3 #define CMD_IOCB_RCV_SEQ64_CX 0xB5 #define CMD_IOCB_RCV_ELS64_CX 0xB7 #define CMD_IOCB_RCV_CONT64_CX 0xBB @@ -3039,7 +3040,26 @@ struct rcv_sli3 { struct ulp_bde64 bde2; }; +/* Structure used for a single HBQ entry */ +struct lpfc_hbq_entry { + struct ulp_bde64 bde; + uint32_t buffer_tag; +}; +/* IOCB Command template for QUE_XRI64_CX (0xB3) command */ +typedef struct { + struct lpfc_hbq_entry buff; + uint32_t rsvd; + uint32_t rsvd1; +} QUE_XRI64_CX_FIELDS; + +struct que_xri64cx_ext_fields { + uint32_t iotag64_low; + uint32_t iotag64_high; + uint32_t ebde_count; + uint32_t rsvd; + struct lpfc_hbq_entry buff[5]; +}; typedef struct _IOCB { /* IOCB structure */ union { @@ -3064,6 +3084,7 @@ typedef struct _IOCB { /* IOCB structure */ FCPI_FIELDS64 fcpi64; /* FCP 64 bit Initiator template */ FCPT_FIELDS64 fcpt64; /* FCP 64 bit target template */ ASYNCSTAT_FIELDS asyncstat; /* async_status iocb */ + QUE_XRI64_CX_FIELDS quexri64cx; /* que_xri64_cx fields */ uint32_t ulpWord[IOCB_WORD_SZ - 2]; /* generic 6 'words' */ } un; @@ -3121,6 +3142,10 @@ typedef struct _IOCB { /* IOCB structure */ union { struct rcv_sli3 rcvsli3; /* words 8 - 15 */ + + /* words 8-31 used for que_xri_cx iocb */ + struct que_xri64cx_ext_fields que_xri64cx_ext_words; + uint32_t sli3Words[24]; /* 96 extra bytes for SLI-3 */ } unsli3; @@ -3160,12 +3185,6 @@ typedef struct _IOCB { /* IOCB structure */ } IOCB_t; -/* Structure used for a single HBQ entry */ -struct lpfc_hbq_entry { - struct ulp_bde64 bde; - uint32_t buffer_tag; -}; - #define SLI1_SLIM_SIZE (4 * 1024) diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index c3743d6f445b..9bc85d5a02f7 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -931,6 +931,16 @@ lpfc_sli_replace_hbqbuff(struct lpfc_hba *phba, uint32_t tag) return &new_hbq_entry->dbuf; } +static struct lpfc_dmabuf * +lpfc_sli_get_buff(struct lpfc_hba *phba, + struct lpfc_sli_ring *pring, + uint32_t tag) +{ + if (tag & QUE_BUFTAG_BIT) + return lpfc_sli_ring_taggedbuf_get(phba, pring, tag); + else + return lpfc_sli_replace_hbqbuff(phba, tag); +} static int lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, @@ -940,6 +950,7 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, WORD5 * w5p; uint32_t Rctl, Type; uint32_t match, i; + struct lpfc_iocbq *iocbq; match = 0; irsp = &(saveq->iocb); @@ -984,12 +995,69 @@ lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, } if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) { - if (irsp->ulpBdeCount != 0) - saveq->context2 = lpfc_sli_replace_hbqbuff(phba, + struct lpfc_hbq_entry *hbqe_1, *hbqe_2; + hbqe_1 = (struct lpfc_hbq_entry *) &saveq->iocb.un.ulpWord[0]; + hbqe_2 = (struct lpfc_hbq_entry *) &saveq->iocb. + unsli3.sli3Words[4]; + + if (irsp->ulpBdeCount != 0) { + saveq->context2 = lpfc_sli_get_buff(phba, pring, irsp->un.ulpWord[3]); - if (irsp->ulpBdeCount == 2) - saveq->context3 = lpfc_sli_replace_hbqbuff(phba, + if (!saveq->context2) + lpfc_printf_log(phba, + KERN_ERR, + LOG_SLI, + "0341 Ring %d Cannot find buffer for " + "an unsolicited iocb. tag 0x%x\n", + pring->ringno, + irsp->un.ulpWord[3]); + + } + if (irsp->ulpBdeCount == 2) { + saveq->context3 = lpfc_sli_get_buff(phba, pring, irsp->unsli3.sli3Words[7]); + if (!saveq->context3) + lpfc_printf_log(phba, + KERN_ERR, + LOG_SLI, + "0342 Ring %d Cannot find buffer for an" + " unsolicited iocb. tag 0x%x\n", + pring->ringno, + irsp->unsli3.sli3Words[7]); + } + list_for_each_entry(iocbq, &saveq->list, list) { + hbqe_1 = (struct lpfc_hbq_entry *) &iocbq->iocb. + un.ulpWord[0]; + hbqe_2 = (struct lpfc_hbq_entry *) &iocbq->iocb. + unsli3.sli3Words[4]; + irsp = &(iocbq->iocb); + + if (irsp->ulpBdeCount != 0) { + iocbq->context2 = lpfc_sli_get_buff(phba, pring, + irsp->un.ulpWord[3]); + if (!saveq->context2) + lpfc_printf_log(phba, + KERN_ERR, + LOG_SLI, + "0343 Ring %d Cannot find " + "buffer for an unsolicited iocb" + ". tag 0x%x\n", pring->ringno, + irsp->un.ulpWord[3]); + } + if (irsp->ulpBdeCount == 2) { + iocbq->context3 = lpfc_sli_get_buff(phba, pring, + irsp->unsli3.sli3Words[7]); + if (!saveq->context3) + lpfc_printf_log(phba, + KERN_ERR, + LOG_SLI, + "0344 Ring %d Cannot find " + "buffer for an unsolicited " + "iocb. tag 0x%x\n", + pring->ringno, + irsp->unsli3.sli3Words[7]); + } + } } /* unSolicited Responses */ @@ -2480,7 +2548,7 @@ lpfc_mbox_timeout_handler(struct lpfc_hba *phba) lpfc_sli_abort_iocb_ring(phba, pring); lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI, - "0316 Resetting board due to mailbox timeout\n"); + "0345 Resetting board due to mailbox timeout\n"); /* * lpfc_offline calls lpfc_sli_hba_down which will clean up * on oustanding mailbox commands. @@ -2975,7 +3043,7 @@ lpfc_sli_async_event_handler(struct lpfc_hba * phba, lpfc_printf_log(phba, KERN_ERR, LOG_SLI, - "0327 Ring %d handler: unexpected ASYNC_STATUS" + "0346 Ring %d handler: unexpected ASYNC_STATUS" " evt_code 0x%x\n", pring->ringno, icmd->un.asyncstat.evt_code); @@ -2988,7 +3056,7 @@ lpfc_sli_async_event_handler(struct lpfc_hba * phba, lpfc_printf_log(phba, KERN_WARNING, LOG_TEMP, - "0339 Adapter is very hot, please take " + "0347 Adapter is very hot, please take " "corrective action. temperature : %d Celsius\n", temp); } @@ -3314,6 +3382,47 @@ lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, return 0; } +uint32_t +lpfc_sli_get_buffer_tag(struct lpfc_hba *phba) +{ + spin_lock_irq(&phba->hbalock); + phba->buffer_tag_count++; + /* + * Always set the QUE_BUFTAG_BIT to distiguish between + * a tag assigned by HBQ. + */ + phba->buffer_tag_count |= QUE_BUFTAG_BIT; + spin_unlock_irq(&phba->hbalock); + return phba->buffer_tag_count; +} + +struct lpfc_dmabuf * +lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, + uint32_t tag) +{ + struct lpfc_dmabuf *mp, *next_mp; + struct list_head *slp = &pring->postbufq; + + /* Search postbufq, from the begining, looking for a match on tag */ + spin_lock_irq(&phba->hbalock); + list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) { + if (mp->buffer_tag == tag) { + list_del_init(&mp->list); + pring->postbufq_cnt--; + spin_unlock_irq(&phba->hbalock); + return mp; + } + } + + spin_unlock_irq(&phba->hbalock); + lpfc_printf_log(phba, KERN_ERR, LOG_INIT, + "0410 Cannot find virtual addr for buffer tag on " + "ring %d Data x%lx x%p x%p x%x\n", + pring->ringno, (unsigned long) tag, + slp->next, slp->prev, pring->postbufq_cnt); + + return NULL; +} struct lpfc_dmabuf * lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, -- 2.30.2