From d1d7b19d433188e94fc87cc7ca66363cd77a0bba Mon Sep 17 00:00:00 2001 From: Denys Vlasenko Date: Fri, 25 Apr 2008 04:34:49 +0200 Subject: [SCSI] aic7xxx: add static This patch adds static (and sometimes const) keywords where appropriate. Signed-off-by: Denys Vlasenko Acked-by: Hannes Reinecke Signed-off-by: James Bottomley --- drivers/scsi/aic7xxx/aic7xxx_core.c | 180 +++++++++++++++++++++++++----------- 1 file changed, 124 insertions(+), 56 deletions(-) (limited to 'drivers/scsi/aic7xxx/aic7xxx_core.c') diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c b/drivers/scsi/aic7xxx/aic7xxx_core.c index d1d006b8b3a9..62417ed17cf3 100644 --- a/drivers/scsi/aic7xxx/aic7xxx_core.c +++ b/drivers/scsi/aic7xxx/aic7xxx_core.c @@ -51,8 +51,7 @@ #endif /***************************** Lookup Tables **********************************/ -char *ahc_chip_names[] = -{ +static const char *const ahc_chip_names[] = { "NONE", "aic7770", "aic7850", @@ -75,10 +74,10 @@ static const u_int num_chip_names = ARRAY_SIZE(ahc_chip_names); */ struct ahc_hard_error_entry { uint8_t errno; - char *errmesg; + const char *errmesg; }; -static struct ahc_hard_error_entry ahc_hard_errors[] = { +static const struct ahc_hard_error_entry ahc_hard_errors[] = { { ILLHADDR, "Illegal Host Access" }, { ILLSADDR, "Illegal Sequencer Address referrenced" }, { ILLOPCODE, "Illegal Opcode in sequencer program" }, @@ -90,7 +89,7 @@ static struct ahc_hard_error_entry ahc_hard_errors[] = { }; static const u_int num_errors = ARRAY_SIZE(ahc_hard_errors); -static struct ahc_phase_table_entry ahc_phase_table[] = +static const struct ahc_phase_table_entry ahc_phase_table[] = { { P_DATAOUT, MSG_NOOP, "in Data-out phase" }, { P_DATAIN, MSG_INITIATOR_DET_ERR, "in Data-in phase" }, @@ -115,7 +114,7 @@ static const u_int num_phases = ARRAY_SIZE(ahc_phase_table) - 1; * Provides a mapping of tranfer periods in ns to the proper value to * stick in the scsixfer reg. */ -static struct ahc_syncrate ahc_syncrates[] = +static const struct ahc_syncrate ahc_syncrates[] = { /* ultra2 fast/ultra period rate */ { 0x42, 0x000, 9, "80.0" }, @@ -148,7 +147,7 @@ static struct ahc_tmode_tstate* static void ahc_free_tstate(struct ahc_softc *ahc, u_int scsi_id, char channel, int force); #endif -static struct ahc_syncrate* +static const struct ahc_syncrate* ahc_devlimited_syncrate(struct ahc_softc *ahc, struct ahc_initiator_tinfo *, u_int *period, @@ -204,9 +203,9 @@ static void ahc_setup_target_msgin(struct ahc_softc *ahc, #endif static bus_dmamap_callback_t ahc_dmamap_cb; -static void ahc_build_free_scb_list(struct ahc_softc *ahc); -static int ahc_init_scbdata(struct ahc_softc *ahc); -static void ahc_fini_scbdata(struct ahc_softc *ahc); +static void ahc_build_free_scb_list(struct ahc_softc *ahc); +static int ahc_init_scbdata(struct ahc_softc *ahc); +static void ahc_fini_scbdata(struct ahc_softc *ahc); static void ahc_qinfifo_requeue(struct ahc_softc *ahc, struct scb *prev_scb, struct scb *scb); @@ -238,6 +237,71 @@ static int ahc_handle_target_cmd(struct ahc_softc *ahc, struct target_cmd *cmd); #endif +static u_int ahc_index_busy_tcl(struct ahc_softc *ahc, u_int tcl); +static void ahc_unbusy_tcl(struct ahc_softc *ahc, u_int tcl); +static void ahc_busy_tcl(struct ahc_softc *ahc, + u_int tcl, u_int busyid); + +/************************** SCB and SCB queue management **********************/ +static void ahc_run_untagged_queues(struct ahc_softc *ahc); +static void ahc_run_untagged_queue(struct ahc_softc *ahc, + struct scb_tailq *queue); + +/****************************** Initialization ********************************/ +static void ahc_alloc_scbs(struct ahc_softc *ahc); +static void ahc_shutdown(void *arg); + +/*************************** Interrupt Services *******************************/ +static void ahc_clear_intstat(struct ahc_softc *ahc); +static void ahc_run_qoutfifo(struct ahc_softc *ahc); +#ifdef AHC_TARGET_MODE +static void ahc_run_tqinfifo(struct ahc_softc *ahc, int paused); +#endif +static void ahc_handle_brkadrint(struct ahc_softc *ahc); +static void ahc_handle_seqint(struct ahc_softc *ahc, u_int intstat); +static void ahc_handle_scsiint(struct ahc_softc *ahc, + u_int intstat); +static void ahc_clear_critical_section(struct ahc_softc *ahc); + +/***************************** Error Recovery *********************************/ +static void ahc_freeze_devq(struct ahc_softc *ahc, struct scb *scb); +static int ahc_abort_scbs(struct ahc_softc *ahc, int target, + char channel, int lun, u_int tag, + role_t role, uint32_t status); +static void ahc_calc_residual(struct ahc_softc *ahc, + struct scb *scb); + +/*********************** Untagged Transaction Routines ************************/ +static inline void ahc_freeze_untagged_queues(struct ahc_softc *ahc); +static inline void ahc_release_untagged_queues(struct ahc_softc *ahc); + +/* + * Block our completion routine from starting the next untagged + * transaction for this target or target lun. + */ +static inline void +ahc_freeze_untagged_queues(struct ahc_softc *ahc) +{ + if ((ahc->flags & AHC_SCB_BTT) == 0) + ahc->untagged_queue_lock++; +} + +/* + * Allow the next untagged transaction for this target or target lun + * to be executed. We use a counting semaphore to allow the lock + * to be acquired recursively. Once the count drops to zero, the + * transaction queues will be run. + */ +static inline void +ahc_release_untagged_queues(struct ahc_softc *ahc) +{ + if ((ahc->flags & AHC_SCB_BTT) == 0) { + ahc->untagged_queue_lock--; + if (ahc->untagged_queue_lock == 0) + ahc_run_untagged_queues(ahc); + } +} + /************************* Sequencer Execution Control ************************/ /* * Work around any chip bugs related to halting sequencer execution. @@ -247,7 +311,7 @@ static int ahc_handle_target_cmd(struct ahc_softc *ahc, * manual pause while accessing scb ram, accesses to certain registers * will hang the system (infinite pci retries). */ -void +static void ahc_pause_bug_fix(struct ahc_softc *ahc) { if ((ahc->features & AHC_ULTRA2) != 0) @@ -304,7 +368,7 @@ ahc_unpause(struct ahc_softc *ahc) } /************************** Memory mapping routines ***************************/ -struct ahc_dma_seg * +static struct ahc_dma_seg * ahc_sg_bus_to_virt(struct scb *scb, uint32_t sg_busaddr) { int sg_index; @@ -316,7 +380,7 @@ ahc_sg_bus_to_virt(struct scb *scb, uint32_t sg_busaddr) return (&scb->sg_list[sg_index]); } -uint32_t +static uint32_t ahc_sg_virt_to_bus(struct scb *scb, struct ahc_dma_seg *sg) { int sg_index; @@ -327,14 +391,14 @@ ahc_sg_virt_to_bus(struct scb *scb, struct ahc_dma_seg *sg) return (scb->sg_list_phys + (sg_index * sizeof(*scb->sg_list))); } -uint32_t +static uint32_t ahc_hscb_busaddr(struct ahc_softc *ahc, u_int index) { return (ahc->scb_data->hscb_busaddr + (sizeof(struct hardware_scb) * index)); } -void +static void ahc_sync_scb(struct ahc_softc *ahc, struct scb *scb, int op) { ahc_dmamap_sync(ahc, ahc->scb_data->hscb_dmat, @@ -355,18 +419,20 @@ ahc_sync_sglist(struct ahc_softc *ahc, struct scb *scb, int op) /*len*/sizeof(struct ahc_dma_seg) * scb->sg_count, op); } -uint32_t +#ifdef AHC_TARGET_MODE +static uint32_t ahc_targetcmd_offset(struct ahc_softc *ahc, u_int index) { return (((uint8_t *)&ahc->targetcmds[index]) - ahc->qoutfifo); } +#endif /*********************** Miscelaneous Support Functions ***********************/ /* * Determine whether the sequencer reported a residual * for this SCB/transaction. */ -void +static void ahc_update_residual(struct ahc_softc *ahc, struct scb *scb) { uint32_t sgptr; @@ -504,7 +570,7 @@ ahc_lookup_scb(struct ahc_softc *ahc, u_int tag) return (scb); } -void +static void ahc_swap_with_next_hscb(struct ahc_softc *ahc, struct scb *scb) { struct hardware_scb *q_hscb; @@ -593,7 +659,7 @@ ahc_get_sense_buf(struct ahc_softc *ahc, struct scb *scb) return (&ahc->scb_data->sense[offset]); } -uint32_t +static uint32_t ahc_get_sense_bufaddr(struct ahc_softc *ahc, struct scb *scb) { int offset; @@ -604,14 +670,14 @@ ahc_get_sense_bufaddr(struct ahc_softc *ahc, struct scb *scb) } /************************** Interrupt Processing ******************************/ -void +static void ahc_sync_qoutfifo(struct ahc_softc *ahc, int op) { ahc_dmamap_sync(ahc, ahc->shared_data_dmat, ahc->shared_data_dmamap, /*offset*/0, /*len*/256, op); } -void +static void ahc_sync_tqinfifo(struct ahc_softc *ahc, int op) { #ifdef AHC_TARGET_MODE @@ -631,7 +697,7 @@ ahc_sync_tqinfifo(struct ahc_softc *ahc, int op) */ #define AHC_RUN_QOUTFIFO 0x1 #define AHC_RUN_TQINFIFO 0x2 -u_int +static u_int ahc_check_cmdcmpltqueues(struct ahc_softc *ahc) { u_int retval; @@ -745,7 +811,7 @@ ahc_intr(struct ahc_softc *ahc) /* * Restart the sequencer program from address zero */ -void +static void ahc_restart(struct ahc_softc *ahc) { @@ -806,7 +872,7 @@ ahc_restart(struct ahc_softc *ahc) } /************************* Input/Output Queues ********************************/ -void +static void ahc_run_qoutfifo(struct ahc_softc *ahc) { struct scb *scb; @@ -853,7 +919,7 @@ ahc_run_qoutfifo(struct ahc_softc *ahc) } } -void +static void ahc_run_untagged_queues(struct ahc_softc *ahc) { int i; @@ -862,7 +928,7 @@ ahc_run_untagged_queues(struct ahc_softc *ahc) ahc_run_untagged_queue(ahc, &ahc->untagged_queues[i]); } -void +static void ahc_run_untagged_queue(struct ahc_softc *ahc, struct scb_tailq *queue) { struct scb *scb; @@ -878,7 +944,7 @@ ahc_run_untagged_queue(struct ahc_softc *ahc, struct scb_tailq *queue) } /************************* Interrupt Handling *********************************/ -void +static void ahc_handle_brkadrint(struct ahc_softc *ahc) { /* @@ -907,7 +973,7 @@ ahc_handle_brkadrint(struct ahc_softc *ahc) ahc_shutdown(ahc); } -void +static void ahc_handle_seqint(struct ahc_softc *ahc, u_int intstat) { struct scb *scb; @@ -1458,7 +1524,7 @@ unpause: ahc_unpause(ahc); } -void +static void ahc_handle_scsiint(struct ahc_softc *ahc, u_int intstat) { u_int scb_index; @@ -1911,7 +1977,7 @@ ahc_force_renegotiation(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) } #define AHC_MAX_STEPS 2000 -void +static void ahc_clear_critical_section(struct ahc_softc *ahc) { int stepping; @@ -2004,7 +2070,7 @@ ahc_clear_critical_section(struct ahc_softc *ahc) /* * Clear any pending interrupt status. */ -void +static void ahc_clear_intstat(struct ahc_softc *ahc) { /* Clear any interrupt conditions this may have caused */ @@ -2023,7 +2089,8 @@ ahc_clear_intstat(struct ahc_softc *ahc) uint32_t ahc_debug = AHC_DEBUG_OPTS; #endif -void +#if 0 /* unused */ +static void ahc_print_scb(struct scb *scb) { int i; @@ -2055,6 +2122,7 @@ ahc_print_scb(struct scb *scb) } } } +#endif /************************* Transfer Negotiation *******************************/ /* @@ -2138,7 +2206,7 @@ ahc_free_tstate(struct ahc_softc *ahc, u_int scsi_id, char channel, int force) * by the capabilities of the bus connectivity of and sync settings for * the target. */ -struct ahc_syncrate * +const struct ahc_syncrate * ahc_devlimited_syncrate(struct ahc_softc *ahc, struct ahc_initiator_tinfo *tinfo, u_int *period, u_int *ppr_options, role_t role) @@ -2193,11 +2261,11 @@ ahc_devlimited_syncrate(struct ahc_softc *ahc, * Return the period and offset that should be sent to the target * if this was the beginning of an SDTR. */ -struct ahc_syncrate * +const struct ahc_syncrate * ahc_find_syncrate(struct ahc_softc *ahc, u_int *period, u_int *ppr_options, u_int maxsync) { - struct ahc_syncrate *syncrate; + const struct ahc_syncrate *syncrate; if ((ahc->features & AHC_DT) == 0) *ppr_options &= ~MSG_EXT_PPR_DT_REQ; @@ -2272,7 +2340,7 @@ ahc_find_syncrate(struct ahc_softc *ahc, u_int *period, u_int ahc_find_period(struct ahc_softc *ahc, u_int scsirate, u_int maxsync) { - struct ahc_syncrate *syncrate; + const struct ahc_syncrate *syncrate; if ((ahc->features & AHC_ULTRA2) != 0) scsirate &= SXFR_ULTRA2; @@ -2310,10 +2378,10 @@ ahc_find_period(struct ahc_softc *ahc, u_int scsirate, u_int maxsync) * Truncate the given synchronous offset to a value the * current adapter type and syncrate are capable of. */ -void +static void ahc_validate_offset(struct ahc_softc *ahc, struct ahc_initiator_tinfo *tinfo, - struct ahc_syncrate *syncrate, + const struct ahc_syncrate *syncrate, u_int *offset, int wide, role_t role) { u_int maxoffset; @@ -2342,7 +2410,7 @@ ahc_validate_offset(struct ahc_softc *ahc, * Truncate the given transfer width parameter to a value the * current adapter type is capable of. */ -void +static void ahc_validate_width(struct ahc_softc *ahc, struct ahc_initiator_tinfo *tinfo, u_int *bus_width, role_t role) { @@ -2417,7 +2485,7 @@ ahc_update_neg_request(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, */ void ahc_set_syncrate(struct ahc_softc *ahc, struct ahc_devinfo *devinfo, - struct ahc_syncrate *syncrate, u_int period, + const struct ahc_syncrate *syncrate, u_int period, u_int offset, u_int ppr_options, u_int type, int paused) { struct ahc_initiator_tinfo *tinfo; @@ -2724,11 +2792,11 @@ ahc_fetch_devinfo(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) role); } -struct ahc_phase_table_entry* +static const struct ahc_phase_table_entry* ahc_lookup_phase_entry(int phase) { - struct ahc_phase_table_entry *entry; - struct ahc_phase_table_entry *last_entry; + const struct ahc_phase_table_entry *entry; + const struct ahc_phase_table_entry *last_entry; /* * num_phases doesn't include the default entry which @@ -2894,7 +2962,7 @@ ahc_build_transfer_msg(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) */ struct ahc_initiator_tinfo *tinfo; struct ahc_tmode_tstate *tstate; - struct ahc_syncrate *rate; + const struct ahc_syncrate *rate; int dowide; int dosync; int doppr; @@ -3560,7 +3628,7 @@ ahc_parse_msg(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) switch (ahc->msgin_buf[2]) { case MSG_EXT_SDTR: { - struct ahc_syncrate *syncrate; + const struct ahc_syncrate *syncrate; u_int period; u_int ppr_options; u_int offset; @@ -3735,7 +3803,7 @@ ahc_parse_msg(struct ahc_softc *ahc, struct ahc_devinfo *devinfo) } case MSG_EXT_PPR: { - struct ahc_syncrate *syncrate; + const struct ahc_syncrate *syncrate; u_int period; u_int offset; u_int bus_width; @@ -4488,7 +4556,7 @@ ahc_free(struct ahc_softc *ahc) return; } -void +static void ahc_shutdown(void *arg) { struct ahc_softc *ahc; @@ -4892,7 +4960,7 @@ ahc_fini_scbdata(struct ahc_softc *ahc) free(scb_data->scbarray, M_DEVBUF); } -void +static void ahc_alloc_scbs(struct ahc_softc *ahc) { struct scb_data *scb_data; @@ -5625,7 +5693,7 @@ ahc_resume(struct ahc_softc *ahc) * Return the untagged transaction id for a given target/channel lun. * Optionally, clear the entry. */ -u_int +static u_int ahc_index_busy_tcl(struct ahc_softc *ahc, u_int tcl) { u_int scbid; @@ -5646,7 +5714,7 @@ ahc_index_busy_tcl(struct ahc_softc *ahc, u_int tcl) return (scbid); } -void +static void ahc_unbusy_tcl(struct ahc_softc *ahc, u_int tcl) { u_int target_offset; @@ -5664,7 +5732,7 @@ ahc_unbusy_tcl(struct ahc_softc *ahc, u_int tcl) } } -void +static void ahc_busy_tcl(struct ahc_softc *ahc, u_int tcl, u_int scbid) { u_int target_offset; @@ -5719,7 +5787,7 @@ ahc_match_scb(struct ahc_softc *ahc, struct scb *scb, int target, return match; } -void +static void ahc_freeze_devq(struct ahc_softc *ahc, struct scb *scb) { int target; @@ -6260,7 +6328,7 @@ ahc_rem_wscb(struct ahc_softc *ahc, u_int scbpos, u_int prev) * been modified from CAM_REQ_INPROG. This routine assumes that the sequencer * is paused before it is called. */ -int +static int ahc_abort_scbs(struct ahc_softc *ahc, int target, char channel, int lun, u_int tag, role_t role, uint32_t status) { @@ -6582,7 +6650,7 @@ ahc_reset_channel(struct ahc_softc *ahc, char channel, int initiate_reset) /* * Calculate the residual for a just completed SCB. */ -void +static void ahc_calc_residual(struct ahc_softc *ahc, struct scb *scb) { struct hardware_scb *hscb; @@ -7049,7 +7117,7 @@ ahc_download_instr(struct ahc_softc *ahc, u_int instrptr, uint8_t *dconsts) } int -ahc_print_register(ahc_reg_parse_entry_t *table, u_int num_entries, +ahc_print_register(const ahc_reg_parse_entry_t *table, u_int num_entries, const char *name, u_int address, u_int value, u_int *cur_column, u_int wrap_point) { @@ -7733,7 +7801,7 @@ ahc_update_scsiid(struct ahc_softc *ahc, u_int targid_mask) ahc_outb(ahc, SCSIID, scsiid); } -void +static void ahc_run_tqinfifo(struct ahc_softc *ahc, int paused) { struct target_cmd *cmd; -- cgit v1.2.3