diff options
author | gibbs <gibbs@FreeBSD.org> | 1998-09-15 08:33:38 +0000 |
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committer | gibbs <gibbs@FreeBSD.org> | 1998-09-15 08:33:38 +0000 |
commit | 589d4a338b39b4f9e27060b9b9c717ae520f8905 (patch) | |
tree | c4a36ecfbf82749363f81dbb7ccb7eed321da23b /sys/dev/dpt/dpt_scsi.c | |
parent | 766d4620976e348ecb44cd6fc16aeceee88fe1ca (diff) | |
download | FreeBSD-src-589d4a338b39b4f9e27060b9b9c717ae520f8905.zip FreeBSD-src-589d4a338b39b4f9e27060b9b9c717ae520f8905.tar.gz |
Conver the DPT driver to CAM. The dpt_control interface is not yet
functional, but will be in another day or so.
Diffstat (limited to 'sys/dev/dpt/dpt_scsi.c')
-rw-r--r-- | sys/dev/dpt/dpt_scsi.c | 4595 |
1 files changed, 1637 insertions, 2958 deletions
diff --git a/sys/dev/dpt/dpt_scsi.c b/sys/dev/dpt/dpt_scsi.c index b71af5e..99dea45 100644 --- a/sys/dev/dpt/dpt_scsi.c +++ b/sys/dev/dpt/dpt_scsi.c @@ -1,4 +1,4 @@ -/** +/* * Copyright (c) 1997 by Simon Shapiro * All Rights Reserved * @@ -27,7 +27,7 @@ * SUCH DAMAGE. */ -/** +/* * dpt_scsi.c: SCSI dependant code for the DPT driver * * credits: Assisted by Mike Neuffer in the early low level DPT code @@ -37,34 +37,13 @@ * Last but not least, many thanx to UCB and the FreeBSD * team for creating and maintaining such a wonderful O/S. * - * TODO: * Add ISA probe code. - * * Add driver-level RSID-0. This will allow interoperability with + * TODO: * Add ISA probe code. + * * Add driver-level RAID-0. This will allow interoperability with * NiceTry, M$-Doze, Win-Dog, Slowlaris, etc., in recognizing RAID * arrays that span controllers (Wow!). */ -/** - * IMPORTANT: - * There are two critical section "levels" used in this driver: - * splcam() and splsoftcam(). Splcam() protects us from re-entrancy - * from both our software and hardware interrupt handler. Splsoftcam() - * protects us only from our software interrupt handler. The two - * main data structures that need protection are the submitted and - * completed queue. - * - * There are three places where the submitted queue is accessed: - * - * 1. dpt_run_queue inserts into the queue - * 2. dpt_intr removes from the queue - * 3 dpt_handle_timeouts potentially removes from the queue. - * - * There are three places where the the completed queue is accessed: - * 1. dpt_intr() inserts into the queue - * 2. dpt_sintr() removes from the queue - * 3. dpt_handle_timeouts potentially inserts into the queue - */ - -#ident "$Id: dpt_scsi.c,v 1.11 1998/08/16 23:37:54 bde Exp $" +#ident "$Id: dpt_scsi.c,v 1.12 1998/08/26 19:11:22 gibbs Exp $" #define _DPT_C_ @@ -75,421 +54,1715 @@ #include <sys/buf.h> #include <sys/kernel.h> -#include <machine/ipl.h> -#include <scsi/scsiconf.h> -#include <scsi/scsi_disk.h> +#include <stddef.h> /* For offsetof */ +#include <machine/bus_memio.h> +#include <machine/bus_pio.h> +#include <machine/bus.h> #include <machine/clock.h> +#include <cam/cam.h> +#include <cam/cam_ccb.h> +#include <cam/cam_sim.h> +#include <cam/cam_xpt_sim.h> +#include <cam/cam_debug.h> +#include <cam/scsi/scsi_all.h> +#include <cam/scsi/scsi_message.h> + #include <vm/vm.h> #include <vm/pmap.h> -/* The HBA reset option uses the same timer as the lost IRQ option*/ -#ifdef DPT_RESET_HBA -#ifndef DPT_LOST_IRQ -#define DPT_LOST_IRQ -#endif -#endif - -#include <sys/dpt.h> - -#ifdef INLINE -#undef INLINE -#endif - -#define INLINE __inline -#define INLINE_Q +#include <dev/dpt/dpt.h> /* dpt_isa.c, dpt_eisa.c, and dpt_pci.c need this in a central place */ +int dpt_controllers_present; -int dpt_controllers_present = 0; +u_long dpt_unit; /* Next unit number to use */ -/* Function Prototypes */ +/* The linked list of softc structures */ +struct dpt_softc_list dpt_softcs = TAILQ_HEAD_INITIALIZER(dpt_softcs); #define microtime_now dpt_time_now() -static INLINE u_int32_t dpt_inl(dpt_softc_t * dpt, u_int32_t offset); -static INLINE u_int8_t dpt_inb(dpt_softc_t * dpt, u_int32_t offset); -static INLINE void -dpt_outb(dpt_softc_t * dpt, u_int32_t offset, - u_int8_t value); -static INLINE void -dpt_outl(dpt_softc_t * dpt, u_int32_t offset, - u_int32_t value); -static INLINE_Q void dpt_Qpush_free(dpt_softc_t * dpt, dpt_ccb_t * ccb); -static INLINE_Q dpt_ccb_t *dpt_Qpop_free(dpt_softc_t * dpt); -static INLINE_Q void dpt_Qadd_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb); -static INLINE_Q void dpt_Qpush_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb); -static INLINE_Q void -dpt_Qremove_waiting(dpt_softc_t * dpt, - dpt_ccb_t * ccb); -static INLINE_Q void -dpt_Qadd_submitted(dpt_softc_t * dpt, - dpt_ccb_t * ccb); -static INLINE_Q void -dpt_Qremove_submitted(dpt_softc_t * dpt, - dpt_ccb_t * ccb); -static INLINE_Q void -dpt_Qadd_completed(dpt_softc_t * dpt, - dpt_ccb_t * ccb); -static INLINE_Q void -dpt_Qremove_completed(dpt_softc_t * dpt, - dpt_ccb_t * ccb); -static int -dpt_send_eata_command(dpt_softc_t * dpt, - eata_ccb_t * cmd_block, - u_int8_t command, - int32_t retries, - u_int8_t ifc, u_int8_t code, - u_int8_t code2); -static INLINE int -dpt_send_immediate(dpt_softc_t * dpt, - eata_ccb_t * cmd_block, - u_int8_t ifc, u_int8_t code, - u_int8_t code2); -static INLINE int dpt_just_reset(dpt_softc_t * dpt); -static INLINE int dpt_raid_busy(dpt_softc_t * dpt); -static INLINE void dpt_sched_queue(dpt_softc_t * dpt); - -#ifdef DPT_MEASURE_PERFORMANCE -static void -dpt_IObySize(dpt_softc_t * dpt, dpt_ccb_t * ccb, - int op, int index); -#endif +#define dpt_inl(dpt, port) \ + bus_space_read_4((dpt)->tag, (dpt)->bsh, port) +#define dpt_inb(dpt, port) \ + bus_space_read_1((dpt)->tag, (dpt)->bsh, port) +#define dpt_outl(dpt, port, value) \ + bus_space_write_4((dpt)->tag, (dpt)->bsh, port, value) +#define dpt_outb(dpt, port, value) \ + bus_space_write_1((dpt)->tag, (dpt)->bsh, port, value) -static void dpt_swi_register(void *); +/* + * These will have to be setup by parameters passed at boot/load time. For + * perfromance reasons, we make them constants for the time being. + */ +#define dpt_min_segs DPT_MAX_SEGS +#define dpt_max_segs DPT_MAX_SEGS -#ifdef DPT_HANDLE_TIMEOUTS -static void dpt_handle_timeouts(dpt_softc_t * dpt); -static void dpt_timeout(void *dpt); -#endif +/* Definitions for our use of the SIM private CCB area */ +#define ccb_dccb_ptr spriv_ptr0 +#define ccb_dpt_ptr spriv_ptr1 + +/* ================= Private Inline Function declarations ===================*/ +static __inline int dpt_just_reset(dpt_softc_t * dpt); +static __inline int dpt_raid_busy(dpt_softc_t * dpt); +static __inline int dpt_wait(dpt_softc_t *dpt, u_int bits, + u_int state); +static __inline struct dpt_ccb* dptgetccb(struct dpt_softc *dpt); +static __inline void dptfreeccb(struct dpt_softc *dpt, + struct dpt_ccb *dccb); +static __inline u_int32_t dptccbvtop(struct dpt_softc *dpt, + struct dpt_ccb *dccb); + +static __inline int dpt_send_immediate(dpt_softc_t *dpt, + eata_ccb_t *cmd_block, + u_int32_t cmd_busaddr, + u_int retries, + u_int ifc, u_int code, + u_int code2); + +/* ==================== Private Function declarations =======================*/ +static void dptmapmem(void *arg, bus_dma_segment_t *segs, + int nseg, int error); + +static struct sg_map_node* + dptallocsgmap(struct dpt_softc *dpt); + +static int dptallocccbs(dpt_softc_t *dpt); + +static int dpt_get_conf(dpt_softc_t *dpt, dpt_ccb_t *dccb, + u_int32_t dccb_busaddr, u_int size, + u_int page, u_int target, int extent); +static void dpt_detect_cache(dpt_softc_t *dpt, dpt_ccb_t *dccb, + u_int32_t dccb_busaddr, + u_int8_t *buff); + +static void dpt_poll(struct cam_sim *sim); + +static void dptexecuteccb(void *arg, bus_dma_segment_t *dm_segs, + int nseg, int error); + +static void dpt_action(struct cam_sim *sim, union ccb *ccb); + +static int dpt_send_eata_command(dpt_softc_t *dpt, eata_ccb_t *cmd, + u_int32_t cmd_busaddr, + u_int command, u_int retries, + u_int ifc, u_int code, + u_int code2); +static void dptprocesserror(dpt_softc_t *dpt, dpt_ccb_t *dccb, + union ccb *ccb, u_int hba_stat, + u_int scsi_stat, u_int32_t resid); + +static void dpttimeout(void *arg); +static void dptshutdown(int howto, void *arg); + +/* ================= Private Inline Function definitions ====================*/ +static __inline int +dpt_just_reset(dpt_softc_t * dpt) +{ + if ((dpt_inb(dpt, 2) == 'D') + && (dpt_inb(dpt, 3) == 'P') + && (dpt_inb(dpt, 4) == 'T') + && (dpt_inb(dpt, 5) == 'H')) + return (1); + else + return (0); +} -#ifdef DPT_LOST_IRQ -static void dpt_irq_timeout(void *dpt); -#endif +static __inline int +dpt_raid_busy(dpt_softc_t * dpt) +{ + if ((dpt_inb(dpt, 0) == 'D') + && (dpt_inb(dpt, 1) == 'P') + && (dpt_inb(dpt, 2) == 'T')) + return (1); + else + return (0); +} -typedef struct scsi_inquiry_data s_inq_data_t; +static __inline int +dpt_wait(dpt_softc_t *dpt, u_int bits, u_int state) +{ + int i; + u_int c; + for (i = 0; i < 20000; i++) { /* wait 20ms for not busy */ + c = dpt_inb(dpt, HA_RSTATUS) & bits; + if (c == state) + return (0); + else + DELAY(50); + } + return (-1); +} -static int -dpt_scatter_gather(dpt_softc_t * dpt, dpt_ccb_t * ccb, - u_int32_t data_length, - caddr_t data); -static int dpt_alloc_freelist(dpt_softc_t * dpt); -static void dpt_run_queue(dpt_softc_t * dpt, int requests); -static void dpt_complete(dpt_softc_t * dpt); -static int -dpt_process_completion(dpt_softc_t * dpt, - dpt_ccb_t * ccb); -static void -dpt_set_target(int redo, dpt_softc_t * dpt, - u_int8_t bus, u_int8_t target, u_int8_t lun, int mode, - u_int16_t length, u_int16_t offset, dpt_ccb_t * ccb); -static void -dpt_target_ccb(dpt_softc_t * dpt, int bus, u_int8_t target, u_int8_t lun, - dpt_ccb_t * ccb, int mode, u_int8_t command, - u_int16_t length, u_int16_t offset); -static void dpt_target_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb); -static void dpt_user_cmd_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb); +static __inline struct dpt_ccb* +dptgetccb(struct dpt_softc *dpt) +{ + struct dpt_ccb* dccb; + int s; + + s = splcam(); + if ((dccb = SLIST_FIRST(&dpt->free_dccb_list)) != NULL) { + SLIST_REMOVE_HEAD(&dpt->free_dccb_list, links); + dpt->free_dccbs--; + } else if (dpt->total_dccbs < dpt->max_dccbs) { + dptallocccbs(dpt); + dccb = SLIST_FIRST(&dpt->free_dccb_list); + if (dccb == NULL) + printf("dpt%d: Can't malloc DCCB\n", dpt->unit); + else { + SLIST_REMOVE_HEAD(&dpt->free_dccb_list, links); + dpt->free_dccbs--; + } + } + splx(s); + return (dccb); +} +static __inline void +dptfreeccb(struct dpt_softc *dpt, struct dpt_ccb *dccb) +{ + int s; + + s = splcam(); + if ((dccb->state & DCCB_ACTIVE) != 0) + LIST_REMOVE(&dccb->ccb->ccb_h, sim_links.le); + if ((dccb->state & DCCB_RELEASE_SIMQ) != 0) + dccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ; + else if (dpt->resource_shortage != 0 + && (dccb->ccb->ccb_h.status & CAM_RELEASE_SIMQ) == 0) { + dccb->ccb->ccb_h.status |= CAM_RELEASE_SIMQ; + dpt->resource_shortage = FALSE; + } + dccb->state = DCCB_FREE; + SLIST_INSERT_HEAD(&dpt->free_dccb_list, dccb, links); + ++dpt->free_dccbs; + splx(s); +} -u_int8_t dpt_blinking_led(dpt_softc_t * dpt); -int -dpt_user_cmd(dpt_softc_t * dpt, eata_pt_t * user_cmd, - caddr_t cmdarg, int minor_no); -void dpt_detect_cache(dpt_softc_t * dpt); -void dpt_shutdown(int howto, void *dpt); -static void hex_dump(u_int8_t * data, int length, char *name, int no); -char *i2bin(unsigned int no, int length); -dpt_conf_t * -dpt_get_conf(dpt_softc_t * dpt, u_int8_t page, u_int8_t target, - u_int8_t size, int extent); -static dpt_inq_t *dpt_get_board_data(dpt_softc_t * dpt, u_int32_t target_id); -int dpt_setup(dpt_softc_t * dpt, dpt_conf_t * conf); -int dpt_attach(dpt_softc_t * dpt); -static int32_t dpt_scsi_cmd(struct scsi_xfer * xs); -static void dptminphys(struct buf * bp); -static void dpt_sintr(void); -void dpt_intr(void *arg); -static char *scsi_cmd_name(u_int8_t cmd); - -dpt_rb_t -dpt_register_buffer(int unit, - u_int8_t channel, - u_int8_t target, - u_int8_t lun, - u_int8_t mode, - u_int16_t length, - u_int16_t offset, - dpt_rec_buff callback, - dpt_rb_op_t op); -int -dpt_send_buffer(int unit, - u_int8_t channel, - u_int8_t target, - u_int8_t lun, - u_int8_t mode, - u_int16_t length, - u_int16_t offset, - void *data, - buff_wr_done callback); - -extern void (*ihandlers[32]) __P((void)); - -u_long dpt_unit; /* This one is kernel-related, do not touch! */ +static __inline u_int32_t +dptccbvtop(struct dpt_softc *dpt, struct dpt_ccb *dccb) +{ + return (dpt->dpt_ccb_busbase + + (u_int32_t)((caddr_t)dccb - (caddr_t)dpt->dpt_dccbs)); +} -/* The linked list of softc structures */ -TAILQ_HEAD(, dpt_softc) dpt_softc_list = TAILQ_HEAD_INITIALIZER(dpt_softc_list); +static __inline struct dpt_ccb * +dptccbptov(struct dpt_softc *dpt, u_int32_t busaddr) +{ + return (dpt->dpt_dccbs + + ((struct dpt_ccb *)busaddr + - (struct dpt_ccb *)dpt->dpt_ccb_busbase)); +} /* - * These will have to be setup by parameters passed at boot/load time. For - * perfromance reasons, we make them constants for the time being. + * Send a command for immediate execution by the DPT + * See above function for IMPORTANT notes. */ -#define dpt_min_segs DPT_MAX_SEGS -#define dpt_max_segs DPT_MAX_SEGS - -static struct scsi_adapter dpt_switch = -{ - dpt_scsi_cmd, - dptminphys, - NULL, - NULL, - NULL, - "dpt", - {0, 0} -}; - -static struct scsi_device dpt_dev = +static __inline int +dpt_send_immediate(dpt_softc_t *dpt, eata_ccb_t *cmd_block, + u_int32_t cmd_busaddr, u_int retries, + u_int ifc, u_int code, u_int code2) { - NULL, /* Use default error handler */ - NULL, /* have a queue, served by this */ - NULL, /* have no async handler */ - NULL, /* Use default 'done' routine */ - "dpt", - 0, - {0, 0} -}; + return (dpt_send_eata_command(dpt, cmd_block, cmd_busaddr, + EATA_CMD_IMMEDIATE, retries, ifc, + code, code2)); +} -/* Software Interrupt Vector */ +/* ===================== Private Function definitions =======================*/ static void -dpt_swi_register(void *unused) +dptmapmem(void *arg, bus_dma_segment_t *segs, int nseg, int error) { - ihandlers[SWI_CAMBIO] = dpt_sintr; + bus_addr_t *busaddrp; + + busaddrp = (bus_addr_t *)arg; + *busaddrp = segs->ds_addr; } -SYSINIT(dpt_camswi, SI_SUB_DRIVERS, SI_ORDER_FIRST, dpt_swi_register, NULL) -/* These functions allows us to do memory mapped I/O, if hardware supported. */ +static struct sg_map_node * +dptallocsgmap(struct dpt_softc *dpt) +{ + struct sg_map_node *sg_map; + + sg_map = malloc(sizeof(*sg_map), M_DEVBUF, M_NOWAIT); + + if (sg_map == NULL) + return (NULL); + + /* Allocate S/G space for the next batch of CCBS */ + if (bus_dmamem_alloc(dpt->sg_dmat, (void **)&sg_map->sg_vaddr, + BUS_DMA_NOWAIT, &sg_map->sg_dmamap) != 0) { + free(sg_map, M_DEVBUF); + return (NULL); + } - static INLINE u_int8_t - dpt_inb(dpt_softc_t * dpt, u_int32_t offset) + SLIST_INSERT_HEAD(&dpt->sg_maps, sg_map, links); + + bus_dmamap_load(dpt->sg_dmat, sg_map->sg_dmamap, sg_map->sg_vaddr, + PAGE_SIZE, dptmapmem, &sg_map->sg_physaddr, /*flags*/0); + + return (sg_map); +} + +/* + * Allocate another chunk of CCB's. Return count of entries added. + * Assumed to be called at splcam(). + */ +static int +dptallocccbs(dpt_softc_t *dpt) { - u_int8_t result; + struct dpt_ccb *next_ccb; + struct sg_map_node *sg_map; + bus_addr_t physaddr; + dpt_sg_t *segs; + int newcount; + int i; + + next_ccb = &dpt->dpt_dccbs[dpt->total_dccbs]; - if (dpt->v_membase != NULL) { - result = dpt->v_membase[offset]; + if (next_ccb == dpt->dpt_dccbs) { + /* + * First time through. Re-use the S/G + * space we allocated for initialization + * CCBS. + */ + sg_map = SLIST_FIRST(&dpt->sg_maps); } else { - result = inb(dpt->io_base + offset); + sg_map = dptallocsgmap(dpt); } - return (result); + + if (sg_map == NULL) + return (0); + + segs = sg_map->sg_vaddr; + physaddr = sg_map->sg_physaddr; + + newcount = (PAGE_SIZE / (dpt->sgsize * sizeof(dpt_sg_t))); + for (i = 0; dpt->total_dccbs < dpt->max_dccbs && i < newcount; i++) { + int error; + + error = bus_dmamap_create(dpt->buffer_dmat, /*flags*/0, + &next_ccb->dmamap); + if (error != 0) + break; + next_ccb->sg_list = segs; + next_ccb->sg_busaddr = htonl(physaddr); + next_ccb->eata_ccb.cp_dataDMA = htonl(physaddr); + next_ccb->eata_ccb.cp_statDMA = htonl(dpt->sp_physaddr); + next_ccb->eata_ccb.cp_reqDMA = + htonl(dptccbvtop(dpt, next_ccb) + + offsetof(struct dpt_ccb, sense_data)); + next_ccb->eata_ccb.cp_busaddr = dpt->dpt_ccb_busend; + + next_ccb->state = DCCB_FREE; + SLIST_INSERT_HEAD(&dpt->free_dccb_list, next_ccb, links); + segs += dpt->sgsize;; + physaddr += (dpt->sgsize * sizeof(dpt_sg_t)); + dpt->dpt_ccb_busend += sizeof(*next_ccb); + next_ccb++; + dpt->total_dccbs++; + } + return (i); } -static INLINE u_int32_t -dpt_inl(dpt_softc_t * dpt, u_int32_t offset) +/* + * Read a configuration page into the supplied dpt_cont_t buffer. + */ +static int +dpt_get_conf(dpt_softc_t *dpt, dpt_ccb_t *dccb, u_int32_t dccb_busaddr, + u_int size, u_int page, u_int target, int extent) { - u_int32_t result; + eata_ccb_t *cp; - if (dpt->v_membase != NULL) { - result = *(volatile u_int32_t *) (&dpt->v_membase[offset]); - } else { - result = inl(dpt->io_base + offset); + u_int16_t *ip; + u_int8_t status, sig1, sig2, sig3; + + int ndx; + int ospl; + int result; + + cp = &dccb->eata_ccb; + bzero((void *)dpt->sp, sizeof(*dpt->sp)); + + cp->Interpret = 1; + cp->DataIn = 1; + cp->Auto_Req_Sen = 1; + cp->reqlen = sizeof(struct scsi_sense_data); + + cp->cp_id = target; + cp->cp_LUN = 0; /* In the EATA packet */ + cp->cp_lun = 0; /* In the SCSI command */ + + cp->cp_scsi_cmd = INQUIRY; + cp->cp_len = size; + + cp->cp_extent = extent; + + cp->cp_page = page; + cp->cp_channel = 0; /* DNC, Interpret mode is set */ + cp->cp_identify = 1; + cp->cp_datalen = htonl(size); + + ospl = splcam(); + + /* + * This could be a simple for loop, but we suspected the compiler To + * have optimized it a bit too much. Wait for the controller to + * become ready + */ + while (((status = dpt_inb(dpt, HA_RSTATUS)) != (HA_SREADY | HA_SSC) + && (status != (HA_SREADY | HA_SSC | HA_SERROR)) + && (status != (HA_SDRDY | HA_SERROR | HA_SDRQ))) + || (dpt_wait(dpt, HA_SBUSY, 0))) { + + /* + * RAID Drives still Spinning up? (This should only occur if + * the DPT controller is in a NON PC (PCI?) platform). + */ + if (dpt_raid_busy(dpt)) { + printf("dpt%d WARNING: Get_conf() RSUS failed.\n", + dpt->unit); + splx(ospl); + return (0); + } } - return (result); + + DptStat_Reset_BUSY(dpt->sp); + + /* + * XXXX We might want to do something more clever than aborting at + * this point, like resetting (rebooting) the controller and trying + * again. + */ + if ((result = dpt_send_eata_command(dpt, cp, dccb_busaddr, + EATA_CMD_DMA_SEND_CP, + 10000, 0, 0, 0)) != 0) { + printf("dpt%d WARNING: Get_conf() failed (%d) to send " + "EATA_CMD_DMA_READ_CONFIG\n", + dpt->unit, result); + splx(ospl); + return (0); + } + /* Wait for two seconds for a response. This can be slow */ + for (ndx = 0; + (ndx < 20000) + && !((status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ); + ndx++) { + DELAY(50); + } + + /* Grab the status and clear interrupts */ + status = dpt_inb(dpt, HA_RSTATUS); + + splx(ospl); + + /* + * Check the status carefully. Return only if the + * command was successful. + */ + if (((status & HA_SERROR) == 0) + && (dpt->sp->hba_stat == 0) + && (dpt->sp->scsi_stat == 0) + && (dpt->sp->residue_len == 0)) + return (0); + return (1); } -static INLINE void -dpt_outb(dpt_softc_t * dpt, u_int32_t offset, u_int8_t value) +/* Detect Cache parameters and size */ +static void +dpt_detect_cache(dpt_softc_t *dpt, dpt_ccb_t *dccb, u_int32_t dccb_busaddr, + u_int8_t *buff) { - if (dpt->v_membase != NULL) { - dpt->v_membase[offset] = value; - } else { - outb(dpt->io_base + offset, value); + eata_ccb_t *cp; + u_int8_t *param; + int size; + int bytes; + int result; + int ospl; + int ndx; + u_int8_t status; + + /* + * Default setting, for best perfromance.. + * This is what virtually all cards default to.. + */ + dpt->cache_type = DPT_CACHE_WRITEBACK; + dpt->cache_size = 0; + + cp = &dccb->eata_ccb; + bzero((void *)dpt->sp, sizeof(dpt->sp)); + bzero(buff, 512); + + /* Setup the command structure */ + cp->Interpret = 1; + cp->DataIn = 1; + cp->Auto_Req_Sen = 1; + cp->reqlen = sizeof(struct scsi_sense_data); + + cp->cp_id = 0; /* who cares? The HBA will interpret.. */ + cp->cp_LUN = 0; /* In the EATA packet */ + cp->cp_lun = 0; /* In the SCSI command */ + cp->cp_channel = 0; + + cp->cp_scsi_cmd = EATA_CMD_DMA_SEND_CP; + cp->cp_len = 56; + + cp->cp_extent = 0; + cp->cp_page = 0; + cp->cp_identify = 1; + cp->cp_dispri = 1; + + /* + * Build the EATA Command Packet structure + * for a Log Sense Command. + */ + cp->cp_cdb[0] = 0x4d; + cp->cp_cdb[1] = 0x0; + cp->cp_cdb[2] = 0x40 | 0x33; + cp->cp_cdb[7] = 1; + + cp->cp_datalen = htonl(512); + + ospl = splcam(); + result = dpt_send_eata_command(dpt, cp, dccb_busaddr, + EATA_CMD_DMA_SEND_CP, + 10000, 0, 0, 0); + if (result != 0) { + printf("dpt%d WARNING: detect_cache() failed (%d) to send " + "EATA_CMD_DMA_SEND_CP\n", dpt->unit, result); + splx(ospl); + return; + } + /* Wait for two seconds for a response. This can be slow... */ + for (ndx = 0; + (ndx < 20000) && + !((status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ); + ndx++) { + DELAY(50); + } + + /* Grab the status and clear interrupts */ + status = dpt_inb(dpt, HA_RSTATUS); + splx(ospl); + + /* + * Sanity check + */ + if (buff[0] != 0x33) { + return; + } + bytes = DPT_HCP_LENGTH(buff); + param = DPT_HCP_FIRST(buff); + + if (DPT_HCP_CODE(param) != 1) { + /* + * DPT Log Page layout error + */ + printf("dpt%d: NOTICE: Log Page (1) layout error\n", + dpt->unit); + return; } + if (!(param[4] & 0x4)) { + dpt->cache_type = DPT_NO_CACHE; + return; + } + while (DPT_HCP_CODE(param) != 6) { + param = DPT_HCP_NEXT(param); + if ((param < buff) + || (param >= &buff[bytes])) { + return; + } + } + + if (param[4] & 0x2) { + /* + * Cache disabled + */ + dpt->cache_type = DPT_NO_CACHE; + return; + } + + if (param[4] & 0x4) { + dpt->cache_type = DPT_CACHE_WRITETHROUGH; + } + + /* XXX This isn't correct. This log parameter only has two bytes.... */ +#if 0 + dpt->cache_size = param[5] + | (param[6] << 8) + | (param[7] << 16) + | (param[8] << 24); +#endif +} + +static void +dpt_poll(struct cam_sim *sim) +{ + dpt_intr(cam_sim_softc(sim)); } -static INLINE void -dpt_outl(dpt_softc_t * dpt, u_int32_t offset, u_int32_t value) +static void +dptexecuteccb(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error) { - if (dpt->v_membase != NULL) { - *(volatile u_int32_t *) (&dpt->v_membase[offset]) = value; + struct dpt_ccb *dccb; + union ccb *ccb; + struct dpt_softc *dpt; + int s, i; + + dccb = (struct dpt_ccb *)arg; + ccb = dccb->ccb; + dpt = (struct dpt_softc *)ccb->ccb_h.ccb_dpt_ptr; + + if (error != 0) { + if (error != EFBIG) + printf("dpt%d: Unexepected error 0x%x returned from " + "bus_dmamap_load\n", dpt->unit); + if (ccb->ccb_h.status == CAM_REQ_INPROG) { + xpt_freeze_devq(ccb->ccb_h.path, /*count*/1); + ccb->ccb_h.status = CAM_REQ_TOO_BIG|CAM_DEV_QFRZN; + } + dptfreeccb(dpt, dccb); + xpt_done(ccb); + return; + } + + if (nseg != 0) { + dpt_sg_t *sg; + bus_dma_segment_t *end_seg; + bus_dmasync_op_t op; + + end_seg = dm_segs + nseg; + + /* Copy the segments into our SG list */ + sg = dccb->sg_list; + while (dm_segs < end_seg) { + sg->seg_len = htonl(dm_segs->ds_len); + sg->seg_addr = htonl(dm_segs->ds_addr); + sg++; + dm_segs++; + } + + if (nseg > 1) { + dccb->eata_ccb.scatter = 1; + dccb->eata_ccb.cp_dataDMA = dccb->sg_busaddr; + dccb->eata_ccb.cp_datalen = + htonl(nseg * sizeof(dpt_sg_t)); + } else { + dccb->eata_ccb.cp_dataDMA = dccb->sg_list[0].seg_addr; + dccb->eata_ccb.cp_datalen = dccb->sg_list[0].seg_len; + } + + if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) + op = BUS_DMASYNC_PREREAD; + else + op = BUS_DMASYNC_PREWRITE; + + bus_dmamap_sync(dpt->buffer_dmat, dccb->dmamap, op); + } else { - outl(dpt->io_base + offset, value); + dccb->eata_ccb.cp_dataDMA = 0; + dccb->eata_ccb.cp_datalen = 0; + } + + s = splcam(); + + /* + * Last time we need to check if this CCB needs to + * be aborted. + */ + if (ccb->ccb_h.status != CAM_REQ_INPROG) { + if (nseg != 0) + bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap); + dptfreeccb(dpt, dccb); + xpt_done(ccb); + splx(s); + return; } + + dccb->state |= DCCB_ACTIVE; + ccb->ccb_h.status |= CAM_SIM_QUEUED; + LIST_INSERT_HEAD(&dpt->pending_ccb_list, &ccb->ccb_h, sim_links.le); + ccb->ccb_h.timeout_ch = + timeout(dpttimeout, (caddr_t)dccb, + (ccb->ccb_h.timeout * hz) / 1000); + if (dpt_send_eata_command(dpt, &dccb->eata_ccb, + dccb->eata_ccb.cp_busaddr, + EATA_CMD_DMA_SEND_CP, 0, 0, 0, 0) != 0) { + ccb->ccb_h.status = CAM_NO_HBA; /* HBA dead or just busy?? */ + if (nseg != 0) + bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap); + dptfreeccb(dpt, dccb); + xpt_done(ccb); + } + + splx(s); } -static INLINE void -dpt_sched_queue(dpt_softc_t * dpt) +static void +dpt_action(struct cam_sim *sim, union ccb *ccb) { - if (dpt->state & DPT_HA_QUIET) { - printf("dpt%d: Under Quiet Busses Condition. " - "No Commands are submitted\n", dpt->unit); + struct dpt_softc *dpt; + int s; + + CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("dpt_action\n")); + + dpt = (struct dpt_softc *)cam_sim_softc(sim); + + if ((dpt->state & DPT_HA_SHUTDOWN_ACTIVE) != 0) { + xpt_print_path(ccb->ccb_h.path); + printf("controller is shutdown. Aborting CCB.\n"); + ccb->ccb_h.status = CAM_NO_HBA; + xpt_done(ccb); return; } - setsoftcambio(); + + switch (ccb->ccb_h.func_code) { + /* Common cases first */ + case XPT_SCSI_IO: /* Execute the requested I/O operation */ + { + struct ccb_scsiio *csio; + struct ccb_hdr *ccbh; + struct dpt_ccb *dccb; + struct eata_ccb *eccb; + + csio = &ccb->csio; + ccbh = &ccb->ccb_h; + /* Max CDB length is 12 bytes */ + if (csio->cdb_len > 12) { + ccb->ccb_h.status = CAM_REQ_INVALID; + xpt_done(ccb); + return; + } + if ((dccb = dptgetccb(dpt)) == NULL) { + int s; + + s = splcam(); + dpt->resource_shortage = 1; + splx(s); + xpt_freeze_simq(sim, /*count*/1); + ccb->ccb_h.status = CAM_REQUEUE_REQ; + xpt_done(ccb); + return; + } + eccb = &dccb->eata_ccb; + + /* Link dccb and ccb so we can find one from the other */ + dccb->ccb = ccb; + ccb->ccb_h.ccb_dccb_ptr = dccb; + ccb->ccb_h.ccb_dpt_ptr = dpt; + + /* + * Explicitly set all flags so that the compiler can + * be smart about setting our bit flags. + */ + eccb->SCSI_Reset = 0; + eccb->HBA_Init = 0; + eccb->Auto_Req_Sen = (ccb->ccb_h.flags & CAM_DIS_AUTOSENSE) + ? 0 : 1; + eccb->scatter = 0; + eccb->Quick = 0; + eccb->Interpret = + ccb->ccb_h.target_id == dpt->hostid[cam_sim_bus(sim)] + ? 1 : 0; + eccb->DataOut = (ccb->ccb_h.flags & CAM_DIR_OUT) ? 1 : 0; + eccb->DataIn = (ccb->ccb_h.flags & CAM_DIR_IN) ? 1 : 0; + eccb->reqlen = csio->sense_len; + eccb->cp_id = ccb->ccb_h.target_id; + eccb->cp_channel = cam_sim_bus(sim); + eccb->cp_LUN = ccb->ccb_h.target_lun; + eccb->cp_luntar = 0; + eccb->cp_dispri = (ccb->ccb_h.flags & CAM_DIS_DISCONNECT) + ? 0 : 1; + eccb->cp_identify = 1; + /* + * XXX JGibbs + * These are supposedly used for tagged queuing. + * We should honor the tag type in the incoming CCB, but + * I don't have DPT documentation to ensure that I do + * this correctly. + */ + eccb->cp_msg[0] = 0; + eccb->cp_msg[1] = 0; + eccb->cp_msg[2] = 0; + + if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) { + if ((ccb->ccb_h.flags & CAM_CDB_PHYS) == 0) { + bcopy(csio->cdb_io.cdb_ptr, + eccb->cp_cdb, csio->cdb_len); + } else { + /* I guess I could map it in... */ + ccb->ccb_h.status = CAM_REQ_INVALID; + dptfreeccb(dpt, dccb); + xpt_done(ccb); + return; + } + } else { + bcopy(csio->cdb_io.cdb_bytes, + eccb->cp_cdb, csio->cdb_len); + } + /* + * If we have any data to send with this command, + * map it into bus space. + */ + /* Only use S/G if there is a transfer */ + if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) { + if ((ccbh->flags & CAM_SCATTER_VALID) == 0) { + /* + * We've been given a pointer + * to a single buffer. + */ + if ((ccbh->flags & CAM_DATA_PHYS) == 0) { + int s; + int error; + + s = splsoftvm(); + error = + bus_dmamap_load(dpt->buffer_dmat, + dccb->dmamap, + csio->data_ptr, + csio->dxfer_len, + dptexecuteccb, + dccb, /*flags*/0); + if (error == EINPROGRESS) { + /* + * So as to maintain ordering, + * freeze the controller queue + * until our mapping is + * returned. + */ + xpt_freeze_simq(sim, 1); + dccb->state |= CAM_RELEASE_SIMQ; + CAM_RELEASE_SIMQ; + } + splx(s); + } else { + struct bus_dma_segment seg; + + /* Pointer to physical buffer */ + seg.ds_addr = + (bus_addr_t)csio->data_ptr; + seg.ds_len = csio->dxfer_len; + dptexecuteccb(dccb, &seg, 1, 0); + } + } else { + struct bus_dma_segment *segs; + + if ((ccbh->flags & CAM_DATA_PHYS) != 0) + panic("btaction - Physical " + "segment pointers " + "unsupported"); + + if ((ccbh->flags&CAM_SG_LIST_PHYS)==0) + panic("btaction - Virtual " + "segment addresses " + "unsupported"); + + /* Just use the segments provided */ + segs = (struct bus_dma_segment *) + csio->data_ptr; + dptexecuteccb(dccb, segs, csio->sglist_cnt, 0); + } + } else { + /* + * XXX JGibbs. + * Does it want them both on or both off? + * CAM_DIR_NONE is both on, so this code can + * be removed if this is also what the DPT + * exptects. + */ + eccb->DataOut = 0; + eccb->DataIn = 0; + dptexecuteccb(dccb, NULL, 0, 0); + } + break; + } + case XPT_RESET_DEV: /* Bus Device Reset the specified SCSI device */ + case XPT_ABORT: /* Abort the specified CCB */ + /* XXX Implement */ + ccb->ccb_h.status = CAM_REQ_INVALID; + xpt_done(ccb); + break; + case XPT_SET_TRAN_SETTINGS: + { + ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; + xpt_done(ccb); + break; + } + case XPT_GET_TRAN_SETTINGS: + /* Get default/user set transfer settings for the target */ + { + struct ccb_trans_settings *cts; + u_int target_mask; + + cts = &ccb->cts; + target_mask = 0x01 << ccb->ccb_h.target_id; + if ((cts->flags & CCB_TRANS_USER_SETTINGS) != 0) { + cts->flags = CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB; + cts->bus_width = (dpt->max_id > 7) + ? MSG_EXT_WDTR_BUS_8_BIT + : MSG_EXT_WDTR_BUS_16_BIT; + cts->sync_period = 25; /* 10MHz */ + + if (cts->sync_period != 0) + cts->sync_offset = 15; + + cts->valid = CCB_TRANS_SYNC_RATE_VALID + | CCB_TRANS_SYNC_OFFSET_VALID + | CCB_TRANS_BUS_WIDTH_VALID + | CCB_TRANS_DISC_VALID + | CCB_TRANS_TQ_VALID; + ccb->ccb_h.status = CAM_REQ_CMP; + } else { + ccb->ccb_h.status = CAM_FUNC_NOTAVAIL; + } + xpt_done(ccb); + break; + } + case XPT_CALC_GEOMETRY: + { + struct ccb_calc_geometry *ccg; + u_int32_t size_mb; + u_int32_t secs_per_cylinder; + int extended; + + /* + * XXX Use Adaptec translation until I find out how to + * get this information from the card. + */ + ccg = &ccb->ccg; + size_mb = ccg->volume_size + / ((1024L * 1024L) / ccg->block_size); + extended = 1; + + if (size_mb > 1024 && extended) { + ccg->heads = 255; + ccg->secs_per_track = 63; + } else { + ccg->heads = 64; + ccg->secs_per_track = 32; + } + secs_per_cylinder = ccg->heads * ccg->secs_per_track; + ccg->cylinders = ccg->volume_size / secs_per_cylinder; + ccb->ccb_h.status = CAM_REQ_CMP; + xpt_done(ccb); + break; + } + case XPT_RESET_BUS: /* Reset the specified SCSI bus */ + { + /* XXX Implement */ + ccb->ccb_h.status = CAM_REQ_CMP; + xpt_done(ccb); + break; + } + case XPT_TERM_IO: /* Terminate the I/O process */ + /* XXX Implement */ + ccb->ccb_h.status = CAM_REQ_INVALID; + xpt_done(ccb); + break; + case XPT_PATH_INQ: /* Path routing inquiry */ + { + struct ccb_pathinq *cpi = &ccb->cpi; + + cpi->version_num = 1; + cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE; + if (dpt->max_id > 7) + cpi->hba_inquiry |= PI_WIDE_16; + cpi->target_sprt = 0; + cpi->hba_misc = 0; + cpi->hba_eng_cnt = 0; + cpi->max_target = dpt->max_id; + cpi->max_lun = dpt->max_lun; + cpi->initiator_id = dpt->hostid[cam_sim_bus(sim)]; + cpi->bus_id = cam_sim_bus(sim); + strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN); + strncpy(cpi->hba_vid, "DPT", HBA_IDLEN); + strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN); + cpi->unit_number = cam_sim_unit(sim); + cpi->ccb_h.status = CAM_REQ_CMP; + xpt_done(ccb); + break; + } + default: + ccb->ccb_h.status = CAM_REQ_INVALID; + xpt_done(ccb); + break; + } } -static INLINE int -dpt_wait(dpt_softc_t * dpt, u_int8_t bits, u_int8_t state) +/* + * This routine will try to send an EATA command to the DPT HBA. + * It will, by default, try 20,000 times, waiting 50us between tries. + * It returns 0 on success and 1 on failure. + * It is assumed to be called at splcam(). + */ +static int +dpt_send_eata_command(dpt_softc_t *dpt, eata_ccb_t *cmd_block, + u_int32_t cmd_busaddr, u_int command, u_int retries, + u_int ifc, u_int code, u_int code2) { - int i; - u_int8_t c; + u_int loop; + u_int result; + u_int test; + + if (!retries) + retries = 20000; - for (i = 0; i < 20000; i++) { /* wait 20ms for not busy */ - c = dpt_inb(dpt, HA_RSTATUS) & bits; - if (c == state) - return (0); + /* + * I hate this polling nonsense. Wish there was a way to tell the DPT + * to go get commands at its own pace, or to interrupt when ready. + * In the mean time we will measure how many itterations it really + * takes. + */ + for (loop = 0; loop < retries; loop++) { + if ((dpt_inb(dpt, HA_RAUXSTAT) & HA_ABUSY) == 0) + break; else DELAY(50); } - return (-1); + + if (loop < retries) { +#ifdef DPT_MEASURE_PERFORMANCE + if (loop > dpt->performance.max_eata_tries) + dpt->performance.max_eata_tries = loop; + + if (loop < dpt->performance.min_eata_tries) + dpt->performance.min_eata_tries = loop; +#endif + } else { +#ifdef DPT_MEASURE_PERFORMANCE + ++dpt->performance.command_too_busy; +#endif + return (1); + } + + /* The controller is alive, advance the wedge timer */ +#ifdef DPT_RESET_HBA + dpt->last_contact = microtime_now; +#endif + + if (cmd_block == NULL) + cmd_busaddr = 0; +#if (BYTE_ORDER == BIG_ENDIAN) + else { + cmd_busaddr = ((cmd_busaddr >> 24) & 0xFF) + | ((cmd_busaddr >> 16) & 0xFF) + | ((cmd_busaddr >> 8) & 0xFF) + | (cmd_busaddr & 0xFF); + } +#endif + /* And now the address */ + dpt_outl(dpt, HA_WDMAADDR, cmd_busaddr); + + if (command == EATA_CMD_IMMEDIATE) { + if (cmd_block == NULL) { + dpt_outb(dpt, HA_WCODE2, code2); + dpt_outb(dpt, HA_WCODE, code); + } + dpt_outb(dpt, HA_WIFC, ifc); + } + dpt_outb(dpt, HA_WCOMMAND, command); + + return (0); } -static INLINE int -dpt_just_reset(dpt_softc_t * dpt) + +/* ==================== Exported Function definitions =======================*/ +struct dpt_softc * +dpt_alloc(u_int unit, bus_space_tag_t tag, bus_space_handle_t bsh) { - if ((dpt_inb(dpt, 2) == 'D') - && (dpt_inb(dpt, 3) == 'P') - && (dpt_inb(dpt, 4) == 'T') - && (dpt_inb(dpt, 5) == 'H')) - return (1); - else - return (0); + struct dpt_softc *dpt; + int i; + + dpt = (struct dpt_softc *)malloc(sizeof(*dpt), M_DEVBUF, M_NOWAIT); + if (dpt == NULL) { + printf("dpt%d: Unable to allocate softc\n", dpt->unit); + return (NULL); + } + + bzero(dpt, sizeof(dpt_softc_t)); + dpt->tag = tag; + dpt->bsh = bsh; + dpt->unit = unit; + SLIST_INIT(&dpt->free_dccb_list); + LIST_INIT(&dpt->pending_ccb_list); + TAILQ_INSERT_TAIL(&dpt_softcs, dpt, links); + for (i = 0; i < MAX_CHANNELS; i++) + dpt->resetlevel[i] = DPT_HA_OK; + +#ifdef DPT_MEASURE_PERFORMANCE + dpt_reset_performance(dpt); +#endif /* DPT_MEASURE_PERFORMANCE */ + return (dpt); } -static INLINE int -dpt_raid_busy(dpt_softc_t * dpt) +void +dpt_free(struct dpt_softc *dpt) { - if ((dpt_inb(dpt, 0) == 'D') - && (dpt_inb(dpt, 1) == 'P') - && (dpt_inb(dpt, 2) == 'T')) - return (1); + switch (dpt->init_level) { + default: + case 5: + bus_dmamap_unload(dpt->dccb_dmat, dpt->dccb_dmamap); + case 4: + bus_dmamem_free(dpt->dccb_dmat, dpt->dpt_dccbs, + dpt->dccb_dmamap); + bus_dmamap_destroy(dpt->dccb_dmat, dpt->dccb_dmamap); + case 3: + bus_dma_tag_destroy(dpt->dccb_dmat); + case 2: + bus_dma_tag_destroy(dpt->buffer_dmat); + case 1: + { + struct sg_map_node *sg_map; + + while ((sg_map = SLIST_FIRST(&dpt->sg_maps)) != NULL) { + SLIST_REMOVE_HEAD(&dpt->sg_maps, links); + bus_dmamap_unload(dpt->sg_dmat, + sg_map->sg_dmamap); + bus_dmamem_free(dpt->sg_dmat, sg_map->sg_vaddr, + sg_map->sg_dmamap); + free(sg_map, M_DEVBUF); + } + bus_dma_tag_destroy(dpt->sg_dmat); + } + case 0: + break; + } + TAILQ_REMOVE(&dpt_softcs, dpt, links); + free(dpt, M_DEVBUF); +} + +u_int8_t string_sizes[] = +{ + sizeof(((dpt_inq_t*)NULL)->vendor), + sizeof(((dpt_inq_t*)NULL)->modelNum), + sizeof(((dpt_inq_t*)NULL)->firmware), + sizeof(((dpt_inq_t*)NULL)->protocol), +}; + +int +dpt_init(struct dpt_softc *dpt) +{ + dpt_conf_t conf; + struct sg_map_node *sg_map; + dpt_ccb_t *dccb; + u_int8_t *strp; + int index; + int i; + int retval; + u_int8_t byte; + +#ifdef DPT_RESET_BOARD + printf("dpt%d: resetting HBA\n", dpt->unit); + dpt_outb(dpt, HA_WCOMMAND, EATA_CMD_RESET); + DELAY(750000); + /* XXX Shouldn't we poll a status register or something??? */ +#endif + /* DMA tag for our S/G structures. We allocate in page sized chunks */ + if (bus_dma_tag_create(dpt->parent_dmat, /*alignment*/0, /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + PAGE_SIZE, /*nsegments*/1, + /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, + /*flags*/0, &dpt->sg_dmat) != 0) { + goto error_exit; + } + + dpt->init_level++; + + /* + * We allocate our DPT ccbs as a contiguous array of bus dma'able + * memory. To get the allocation size, we need to know how many + * ccbs the card supports. This requires a ccb. We solve this + * chicken and egg problem by allocating some re-usable S/G space + * up front, and treating it as our status packet, CCB, and target + * memory space for these commands. + */ + sg_map = dptallocsgmap(dpt); + if (sg_map == NULL) + goto error_exit; + + dpt->sp = (volatile dpt_sp_t *)sg_map->sg_vaddr; + dccb = (struct dpt_ccb *)&dpt->sp[1]; + bzero(dccb, sizeof(*dccb)); + dpt->sp_physaddr = sg_map->sg_physaddr; + dccb->eata_ccb.cp_dataDMA = + htonl(sg_map->sg_physaddr + sizeof(dpt_sp_t) + sizeof(*dccb)); + dccb->eata_ccb.cp_busaddr = ~0; + dccb->eata_ccb.cp_statDMA = htonl(dpt->sp_physaddr); + dccb->eata_ccb.cp_reqDMA = htonl(dpt->sp_physaddr + sizeof(*dccb) + + offsetof(struct dpt_ccb, sense_data)); + + /* Okay. Fetch our config */ + bzero(&dccb[1], sizeof(conf)); /* data area */ + retval = dpt_get_conf(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t), + sizeof(conf), 0xc1, 7, 1); + + if (retval != 0) { + printf("dpt%d: Failed to get board configuration\n", dpt->unit); + return (retval); + } + bcopy(&dccb[1], &conf, sizeof(conf)); + + bzero(&dccb[1], sizeof(dpt->board_data)); + retval = dpt_get_conf(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t), + sizeof(dpt->board_data), 0, conf.scsi_id0, 0); + if (retval != 0) { + printf("dpt%d: Failed to get inquiry information\n", dpt->unit); + return (retval); + } + bcopy(&dccb[1], &dpt->board_data, sizeof(dpt->board_data)); + + dpt_detect_cache(dpt, dccb, sg_map->sg_physaddr + sizeof(dpt_sp_t), + (u_int8_t *)&dccb[1]); + + switch (ntohl(conf.splen)) { + case DPT_EATA_REVA: + dpt->EATA_revision = 'a'; + break; + case DPT_EATA_REVB: + dpt->EATA_revision = 'b'; + break; + case DPT_EATA_REVC: + dpt->EATA_revision = 'c'; + break; + case DPT_EATA_REVZ: + dpt->EATA_revision = 'z'; + break; + default: + dpt->EATA_revision = '?'; + } + + dpt->max_id = conf.MAX_ID; + dpt->max_lun = conf.MAX_LUN; + dpt->irq = conf.IRQ; + dpt->dma_channel = (8 - conf.DMA_channel) & 7; + dpt->channels = conf.MAX_CHAN + 1; + dpt->state |= DPT_HA_OK; + if (conf.SECOND) + dpt->primary = FALSE; else + dpt->primary = TRUE; + + dpt->more_support = conf.MORE_support; + + if (strncmp(dpt->board_data.firmware, "07G0", 4) >= 0) + dpt->immediate_support = 1; + else + dpt->immediate_support = 0; + + dpt->broken_INQUIRY = FALSE; + + dpt->cplen = ntohl(conf.cplen); + dpt->cppadlen = ntohs(conf.cppadlen); + dpt->max_dccbs = ntohs(conf.queuesiz); + + dpt->hostid[0] = conf.scsi_id0; + dpt->hostid[1] = conf.scsi_id1; + dpt->hostid[2] = conf.scsi_id2; + + if (conf.SG_64K) { + dpt->sgsize = SG_SIZE_BIG; + } else if ((ntohs(conf.SGsiz) < 1) + || (ntohs(conf.SGsiz) > SG_SIZE)) { + /* Just a sanity check */ + dpt->sgsize = SG_SIZE; + } else { + dpt->sgsize = ntohs(conf.SGsiz); + } + + if (dpt->sgsize > dpt_max_segs) + dpt->sgsize = dpt_max_segs; + + /* DMA tag for mapping buffers into device visible space. */ + if (bus_dma_tag_create(dpt->parent_dmat, /*alignment*/0, /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + /*maxsize*/MAXBSIZE, /*nsegments*/dpt->sgsize, + /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, + /*flags*/BUS_DMA_ALLOCNOW, + &dpt->buffer_dmat) != 0) { + goto error_exit; + } + + dpt->init_level++; + + /* DMA tag for our ccb structures and interrupt status packet */ + if (bus_dma_tag_create(dpt->parent_dmat, /*alignment*/0, /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + (dpt->max_dccbs * sizeof(struct dpt_ccb)) + + sizeof(dpt_sp_t), + /*nsegments*/1, + /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, + /*flags*/0, &dpt->dccb_dmat) != 0) { + goto error_exit; + } + + dpt->init_level++; + + /* Allocation for our ccbs and interrupt status packet */ + if (bus_dmamem_alloc(dpt->dccb_dmat, (void **)&dpt->dpt_dccbs, + BUS_DMA_NOWAIT, &dpt->dccb_dmamap) != 0) { + goto error_exit; + } + + dpt->init_level++; + + /* And permanently map them */ + bus_dmamap_load(dpt->dccb_dmat, dpt->dccb_dmamap, + dpt->dpt_dccbs, + (dpt->max_dccbs * sizeof(struct dpt_ccb)) + + sizeof(dpt_sp_t), + dptmapmem, &dpt->dpt_ccb_busbase, /*flags*/0); + + dpt->dpt_ccb_busend = dpt->dpt_ccb_busbase; + + dpt->sp = (dpt_sp_t*)&dpt->dpt_dccbs[dpt->max_dccbs]; + dpt->sp_physaddr = dpt->dpt_ccb_busbase + + (dpt->max_dccbs * sizeof(dpt_ccb_t)); + dpt->init_level++; + + /* Allocate our first batch of ccbs */ + if (dptallocccbs(dpt) == 0) + return (2); + + /* Prepare for Target Mode */ + dpt->target_mode_enabled = 1; + + /* Nuke excess spaces from inquiry information */ + strp = dpt->board_data.vendor; + for (i = 0; i < sizeof(string_sizes); i++) { + index = string_sizes[i] - 1; + while (index && (strp[index] == ' ')) + strp[index--] = '\0'; + strp += string_sizes[i]; + } + + printf("dpt%d: %.8s %.16s FW Rev. %.4s, ", + dpt->unit, dpt->board_data.vendor, + dpt->board_data.modelNum, dpt->board_data.firmware); + + printf("%d channel%s, ", dpt->channels, dpt->channels > 1 ? "s" : ""); + + if (dpt->cache_type != DPT_NO_CACHE + && dpt->cache_size != 0) { + printf("%s Cache, ", + dpt->cache_type == DPT_CACHE_WRITETHROUGH + ? "Write-Through" : "Write-Back"); + } + + printf("%d CCBs\n", dpt->max_dccbs); + return (0); + +error_exit: + return (1); +} + +int +dpt_attach(dpt_softc_t *dpt) +{ + struct cam_devq *devq; + int i; + + /* + * Create the device queue for our SIM. + */ + devq = cam_simq_alloc(dpt->max_dccbs); + if (devq == NULL) return (0); + + for (i = 0; i < dpt->channels; i++) { + /* + * Construct our SIM entry + */ + dpt->sims[i] = cam_sim_alloc(dpt_action, dpt_poll, "dpt", + dpt, dpt->unit, /*untagged*/2, + /*tagged*/dpt->max_dccbs, devq); + if (xpt_bus_register(dpt->sims[i], i) != CAM_SUCCESS) { + cam_sim_free(dpt->sims[i], /*free_devq*/i == 0); + break; + } + + if (xpt_create_path(&dpt->paths[i], /*periph*/NULL, + cam_sim_path(dpt->sims[i]), + CAM_TARGET_WILDCARD, + CAM_LUN_WILDCARD) != CAM_REQ_CMP) { + xpt_bus_deregister(cam_sim_path(dpt->sims[i])); + cam_sim_free(dpt->sims[i], /*free_devq*/i == 0); + break; + } + + } + if (i > 0) + at_shutdown(dptshutdown, dpt, SHUTDOWN_FINAL); + return (i); } + +/* + * This is the interrupt handler for the DPT driver. + */ +void +dpt_intr(void *arg) +{ + dpt_softc_t *dpt; + dpt_ccb_t *dccb; + union ccb *ccb; + u_int status; + u_int aux_status; + u_int hba_stat; + u_int scsi_stat; + u_int32_t residue_len; /* Number of bytes not transferred */ + + dpt = (dpt_softc_t *)arg; + + /* First order of business is to check if this interrupt is for us */ + while (((aux_status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ) != 0) { + + /* + * What we want to do now, is to capture the status, all of it, + * move it where it belongs, wake up whoever sleeps waiting to + * process this result, and get out of here. + */ + if (dpt->sp->ccb_busaddr < dpt->dpt_ccb_busbase + || dpt->sp->ccb_busaddr >= dpt->dpt_ccb_busend) { + printf("Encountered bogus status packet\n"); + status = dpt_inb(dpt, HA_RSTATUS); + return; + } + + dccb = dptccbptov(dpt, dpt->sp->ccb_busaddr); + + dpt->sp->ccb_busaddr = ~0; + + /* Ignore status packets with EOC not set */ + if (dpt->sp->EOC == 0) { + printf("dpt%d ERROR: Request %d recieved with " + "clear EOC.\n Marking as LOST.\n", + dpt->unit, dccb->transaction_id); + +#ifdef DPT_HANDLE_TIMEOUTS + dccb->state |= DPT_CCB_STATE_MARKED_LOST; +#endif + /* This CLEARS the interrupt! */ + status = dpt_inb(dpt, HA_RSTATUS); + continue; + } + dpt->sp->EOC = 0; + + /* + * Double buffer the status information so the hardware can + * work on updating the status packet while we decifer the + * one we were just interrupted for. + * According to Mark Salyzyn, we only need few pieces of it. + */ + hba_stat = dpt->sp->hba_stat; + scsi_stat = dpt->sp->scsi_stat; + residue_len = dpt->sp->residue_len; + + /* Clear interrupts, check for error */ + if ((status = dpt_inb(dpt, HA_RSTATUS)) & HA_SERROR) { + /* + * Error Condition. Check for magic cookie. Exit + * this test on earliest sign of non-reset condition + */ + + /* Check that this is not a board reset interrupt */ + if (dpt_just_reset(dpt)) { + printf("dpt%d: HBA rebooted.\n" + " All transactions should be " + "resubmitted\n", + dpt->unit); + + printf("dpt%d: >>---->> This is incomplete, " + "fix me.... <<----<<", dpt->unit); + panic("DPT Rebooted"); + + } + } + /* Process CCB */ + ccb = dccb->ccb; + untimeout(dpttimeout, dccb, ccb->ccb_h.timeout_ch); + if ((ccb->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) { + bus_dmasync_op_t op; + + if ((ccb->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) + op = BUS_DMASYNC_POSTREAD; + else + op = BUS_DMASYNC_POSTWRITE; + bus_dmamap_sync(dpt->buffer_dmat, dccb->dmamap, op); + bus_dmamap_unload(dpt->buffer_dmat, dccb->dmamap); + } + + /* Common Case inline... */ + if (hba_stat == HA_NO_ERROR) { + ccb->csio.scsi_status = scsi_stat; + ccb->ccb_h.status = 0; + switch (scsi_stat) { + case SCSI_STATUS_OK: + ccb->ccb_h.status |= CAM_REQ_CMP; + break; + case SCSI_STATUS_CHECK_COND: + case SCSI_STATUS_CMD_TERMINATED: + bcopy(&dccb->sense_data, &ccb->csio.sense_data, + ccb->csio.sense_len); + ccb->ccb_h.status |= CAM_AUTOSNS_VALID; + /* FALLTHROUGH */ + default: + ccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR; + /* XXX Freeze DevQ */ + break; + } + ccb->csio.resid = residue_len; + dptfreeccb(dpt, dccb); + xpt_done(ccb); + } else { + dptprocesserror(dpt, dccb, ccb, hba_stat, scsi_stat, + residue_len); + } + } +} + +static void +dptprocesserror(dpt_softc_t *dpt, dpt_ccb_t *dccb, union ccb *ccb, + u_int hba_stat, u_int scsi_stat, u_int32_t resid) +{ + ccb->csio.resid = resid; + switch (hba_stat) { + case HA_ERR_SEL_TO: + ccb->ccb_h.status = CAM_SEL_TIMEOUT; + break; + case HA_ERR_CMD_TO: + ccb->ccb_h.status = CAM_CMD_TIMEOUT; + break; + case HA_SCSIBUS_RESET: + case HA_HBA_POWER_UP: /* Similar effect to a bus reset??? */ + ccb->ccb_h.status = CAM_SCSI_BUS_RESET; + break; + case HA_CP_ABORTED: + case HA_CP_RESET: /* XXX ??? */ + case HA_CP_ABORT_NA: /* XXX ??? */ + case HA_CP_RESET_NA: /* XXX ??? */ + ccb->ccb_h.status = CAM_REQ_ABORTED; + break; + case HA_PCI_PARITY: + case HA_PCI_MABORT: + case HA_PCI_TABORT: + case HA_PCI_STABORT: + case HA_BUS_PARITY: + case HA_PARITY_ERR: + case HA_ECC_ERR: + ccb->ccb_h.status = CAM_UNCOR_PARITY; + break; + case HA_UNX_MSGRJCT: + ccb->ccb_h.status = CAM_MSG_REJECT_REC; + break; + case HA_UNX_BUSPHASE: + ccb->ccb_h.status = CAM_SEQUENCE_FAIL; + break; + case HA_UNX_BUS_FREE: + ccb->ccb_h.status = CAM_UNEXP_BUSFREE; + break; + case HA_SCSI_HUNG: + case HA_RESET_STUCK: + /* + * Dead??? Can the controller get unstuck + * from these conditions + */ + ccb->ccb_h.status = CAM_NO_HBA; + break; + case HA_RSENSE_FAIL: + ccb->ccb_h.status = CAM_AUTOSENSE_FAIL; + break; + default: + printf("dpt%d: Undocumented Error %x", dpt->unit, hba_stat); + printf("Please mail this message to shimon@i-connect.net\n"); + ccb->ccb_h.status = CAM_REQ_CMP_ERR; + break; + } + dptfreeccb(dpt, dccb); + xpt_done(ccb); +} + +static void +dpttimeout(void *arg) +{ + struct dpt_ccb *dccb; + union ccb *ccb; + struct dpt_softc *dpt; + int s; + + dccb = (struct dpt_ccb *)arg; + ccb = dccb->ccb; + dpt = (struct dpt_softc *)ccb->ccb_h.ccb_dpt_ptr; + xpt_print_path(ccb->ccb_h.path); + printf("CCB 0x%x - timed out\n", dccb); + + s = splcam(); + + if ((dccb->state & DCCB_ACTIVE) == 0) { + xpt_print_path(ccb->ccb_h.path); + printf("CCB 0x%x - timed out CCB already completed\n", dccb); + splx(s); + return; + } + + /* Do an abort. I have no idea what this really does... */ + dpt_send_immediate(dpt, &dccb->eata_ccb, dccb->eata_ccb.cp_busaddr, + /*retries*/20000, EATA_SPECIFIC_ABORT, 0, 0); + ccb->ccb_h.status = CAM_CMD_TIMEOUT; + dptfreeccb(dpt, dccb); + xpt_done(ccb); + splx(s); +} + +/* + * Shutdown the controller and ensure that the cache is completely flushed. + * Called via at_shutdown(9) after all disk access has completed. + */ +static void +dptshutdown(int howto, void *arg) +{ + dpt_softc_t *dpt; + + dpt = (dpt_softc_t *)arg; + + printf("dpt%d: Shutting down (mode %x) HBA. Please wait...\n", + dpt->unit, howto); + + /* + * What we do for a shutdown, is give the DPT early power loss warning + */ + dpt_send_immediate(dpt, NULL, 0, EATA_POWER_OFF_WARN, 0, 0, 0); + DELAY(1000 * 1000 * 5); + printf("dpt%d: Controller was warned of shutdown and is now " + "disabled\n", dpt->unit); +} + +/*============================================================================*/ + +#if 0 #ifdef DPT_RESET_HBA /* ** Function name : dpt_reset_hba ** ** Description : Reset the HBA and properly discard all pending work -** Input : Minor Device Number +** Input : Softc ** Output : Nothing */ - static void dpt_reset_hba(dpt_softc_t *dpt) { - eata_ccb_t *ccb; - int ospl; - dpt_ccb_t dccb, *dccbp; - int result; - struct scsi_xfer *xs; + eata_ccb_t *ccb; + int ospl; + dpt_ccb_t dccb, *dccbp; + int result; + struct scsi_xfer *xs; - /* Prepare a control block. The SCSI command part is immaterial */ - dccb.xs = NULL; - dccb.flags = 0; - dccb.state = DPT_CCB_STATE_NEW; - dccb.std_callback = NULL; - dccb.wrbuff_callback = NULL; - - ccb = &dccb.eata_ccb; - ccb->CP_OpCode = EATA_CMD_RESET; - ccb->SCSI_Reset = 0; - ccb->HBA_Init = 1; - ccb->Auto_Req_Sen = 1; - ccb->cp_id = 0; /* Should be ignored */ - ccb->DataIn = 1; - ccb->DataOut = 0; - ccb->Interpret = 1; - ccb->reqlen = htonl(sizeof(struct scsi_sense_data)); - ccb->cp_statDMA = htonl(vtophys(&ccb->cp_statDMA)); - ccb->cp_reqDMA = htonl(vtophys(&ccb->cp_reqDMA)); - ccb->cp_viraddr = (u_int32_t) & ccb; - - ccb->cp_msg[0] = HA_IDENTIFY_MSG | HA_DISCO_RECO; - ccb->cp_scsi_cmd = 0; /* Should be ignored */ - - /* Lock up the submitted queue. We are very persistant here */ - ospl = splcam(); - while (dpt->queue_status & DPT_SUBMITTED_QUEUE_ACTIVE) { - DELAY(100); - } + /* Prepare a control block. The SCSI command part is immaterial */ + dccb.xs = NULL; + dccb.flags = 0; + dccb.state = DPT_CCB_STATE_NEW; + dccb.std_callback = NULL; + dccb.wrbuff_callback = NULL; + + ccb = &dccb.eata_ccb; + ccb->CP_OpCode = EATA_CMD_RESET; + ccb->SCSI_Reset = 0; + ccb->HBA_Init = 1; + ccb->Auto_Req_Sen = 1; + ccb->cp_id = 0; /* Should be ignored */ + ccb->DataIn = 1; + ccb->DataOut = 0; + ccb->Interpret = 1; + ccb->reqlen = htonl(sizeof(struct scsi_sense_data)); + ccb->cp_statDMA = htonl(vtophys(&ccb->cp_statDMA)); + ccb->cp_reqDMA = htonl(vtophys(&ccb->cp_reqDMA)); + ccb->cp_viraddr = (u_int32_t) & ccb; + + ccb->cp_msg[0] = HA_IDENTIFY_MSG | HA_DISCO_RECO; + ccb->cp_scsi_cmd = 0; /* Should be ignored */ + + /* Lock up the submitted queue. We are very persistant here */ + ospl = splcam(); + while (dpt->queue_status & DPT_SUBMITTED_QUEUE_ACTIVE) { + DELAY(100); + } - dpt->queue_status |= DPT_SUBMITTED_QUEUE_ACTIVE; - splx(ospl); - - /* Send the RESET message */ - if ((result = dpt_send_eata_command(dpt, &dccb.eata_ccb, - EATA_CMD_RESET, 0, 0, 0, 0)) != 0) { - printf("dpt%d: Failed to send the RESET message.\n" - " Trying cold boot (ouch!)\n", dpt->unit); + dpt->queue_status |= DPT_SUBMITTED_QUEUE_ACTIVE; + splx(ospl); + + /* Send the RESET message */ + if ((result = dpt_send_eata_command(dpt, &dccb.eata_ccb, + EATA_CMD_RESET, 0, 0, 0, 0)) != 0) { + printf("dpt%d: Failed to send the RESET message.\n" + " Trying cold boot (ouch!)\n", dpt->unit); - if ((result = dpt_send_eata_command(dpt, &dccb.eata_ccb, - EATA_COLD_BOOT, 0, 0, 0, 0)) - != 0) { - panic("dpt%d: Faild to cold boot the HBA\n", dpt->unit); - } + if ((result = dpt_send_eata_command(dpt, &dccb.eata_ccb, + EATA_COLD_BOOT, 0, 0, + 0, 0)) != 0) { + panic("dpt%d: Faild to cold boot the HBA\n", + dpt->unit); + } #ifdef DPT_MEASURE_PERFORMANCE - dpt->performance.cold_boots++; + dpt->performance.cold_boots++; #endif /* DPT_MEASURE_PERFORMANCE */ - } + } #ifdef DPT_MEASURE_PERFORMANCE dpt->performance.warm_starts++; #endif /* DPT_MEASURE_PERFORMANCE */ - printf("dpt%d: Aborting pending requests. O/S should re-submit\n", - dpt->unit); + printf("dpt%d: Aborting pending requests. O/S should re-submit\n", + dpt->unit); - while ((dccbp = TAILQ_FIRST(&dpt->completed_ccbs)) != NULL) { - struct scsi_xfer *xs = dccbp->xs; + while ((dccbp = TAILQ_FIRST(&dpt->completed_ccbs)) != NULL) { + struct scsi_xfer *xs = dccbp->xs; - /* Not all transactions have xs structs */ - if (xs != NULL) { - /* Tell the kernel proper this did not complete well */ - xs->error |= XS_SELTIMEOUT; - xs->flags |= SCSI_ITSDONE; - scsi_done(xs); - } + /* Not all transactions have xs structs */ + if (xs != NULL) { + /* Tell the kernel proper this did not complete well */ + xs->error |= XS_SELTIMEOUT; + xs->flags |= SCSI_ITSDONE; + scsi_done(xs); + } - dpt_Qremove_submitted(dpt, dccbp); + dpt_Qremove_submitted(dpt, dccbp); - /* Remember, Callbacks are NOT in the standard queue */ - if (dccbp->std_callback != NULL) { - (dccbp->std_callback) (dpt, dccbp->eata_ccb.cp_channel, dccbp); - } else { - ospl = splcam(); - dpt_Qpush_free(dpt, dccbp); - splx(ospl); + /* Remember, Callbacks are NOT in the standard queue */ + if (dccbp->std_callback != NULL) { + (dccbp->std_callback)(dpt, dccbp->eata_ccb.cp_channel, + dccbp); + } else { + ospl = splcam(); + dpt_Qpush_free(dpt, dccbp); + splx(ospl); + } } - } - - printf("dpt%d: reset done aborting all pending commands\n", dpt->unit); - dpt->queue_status &= ~DPT_SUBMITTED_QUEUE_ACTIVE; + + printf("dpt%d: reset done aborting all pending commands\n", dpt->unit); + dpt->queue_status &= ~DPT_SUBMITTED_QUEUE_ACTIVE; } #endif /* DPT_RESET_HBA */ -/** +/* * Build a Command Block for target mode READ/WRITE BUFFER, * with the ``sync'' bit ON. * * Although the length and offset are 24 bit fields in the command, they cannot * exceed 8192 bytes, so we take them as short integers andcheck their range. - * If they are sensless, we round them to zero offset, maximum length and complain. + * If they are sensless, we round them to zero offset, maximum length and + * complain. */ static void @@ -540,14 +1813,14 @@ dpt_target_ccb(dpt_softc_t * dpt, int bus, u_int8_t target, u_int8_t lun, cp->cp_cdb[8] = length & 0xFF; /* Length LSB */ cp->cp_cdb[9] = 0; /* No sync, no match bits */ - /** + /* * This could be optimized to live in dpt_register_buffer. - * We keep it here, just in case the kernel decides to reallocate pages + * We keep it here, just in case the kernel decides to reallocate pages */ if (dpt_scatter_gather(dpt, ccb, DPT_RW_BUFFER_SIZE, dpt->rw_buffer[bus][target][lun])) { - printf("dpt%d: Failed to setup Scatter/Gather for Target-Mode buffer\n", - dpt->unit); + printf("dpt%d: Failed to setup Scatter/Gather for " + "Target-Mode buffer\n", dpt->unit); } } @@ -558,7 +1831,7 @@ dpt_set_target(int redo, dpt_softc_t * dpt, u_int8_t bus, u_int8_t target, u_int8_t lun, int mode, u_int16_t length, u_int16_t offset, dpt_ccb_t * ccb) { - int ospl; + int ospl; if (dpt->target_mode_enabled) { ospl = splcam(); @@ -583,7 +1856,7 @@ dpt_set_target(int redo, dpt_softc_t * dpt, } } -/** +/* * Schedule a buffer to be sent to another target. * The work will be scheduled and the callback provided will be called when * the work is actually done. @@ -593,14 +1866,8 @@ dpt_set_target(int redo, dpt_softc_t * dpt, */ int -dpt_send_buffer(int unit, - u_int8_t channel, - u_int8_t target, - u_int8_t lun, - u_int8_t mode, - u_int16_t length, - u_int16_t offset, - void *data, +dpt_send_buffer(int unit, u_int8_t channel, u_int8_t target, u_int8_t lun, + u_int8_t mode, u_int16_t length, u_int16_t offset, void *data, buff_wr_done callback) { dpt_softc_t *dpt; @@ -727,26 +1994,18 @@ dpt_target_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb) dpt->target_ccb[br_channel][br_target][br_lun] = NULL; dpt_Qpush_free(dpt, ccb); splx(ospl); - } -/** +/* * Use this function to register a client for a buffer read target operation. * The function you register will be called every time a buffer is received * by the target mode code. */ - dpt_rb_t -dpt_register_buffer(int unit, - u_int8_t channel, - u_int8_t target, - u_int8_t lun, - u_int8_t mode, - u_int16_t length, - u_int16_t offset, - dpt_rec_buff callback, - dpt_rb_op_t op) +dpt_register_buffer(int unit, u_int8_t channel, u_int8_t target, u_int8_t lun, + u_int8_t mode, u_int16_t length, u_int16_t offset, + dpt_rec_buff callback, dpt_rb_op_t op) { dpt_softc_t *dpt; dpt_ccb_t *ccb = NULL; @@ -788,7 +2047,8 @@ valid_unit: /* Now grab the newest CCB */ if ((ccb = dpt_Qpop_free(dpt)) == NULL) { splx(ospl); - panic("dpt%d: Got a NULL CCB from pop_free()\n", dpt->unit); + panic("dpt%d: Got a NULL CCB from pop_free()\n", + dpt->unit); } splx(ospl); @@ -796,18 +2056,18 @@ valid_unit: ccb->status = DPT_CCB_STATE_NEW; dpt->target_ccb[channel][target][lun] = ccb; - dpt->rw_buffer[channel][target][lun] = malloc(DPT_RW_BUFFER_SIZE, - M_DEVBUF, M_NOWAIT); + dpt->rw_buffer[channel][target][lun] = + malloc(DPT_RW_BUFFER_SIZE, M_DEVBUF, M_NOWAIT); if (dpt->rw_buffer[channel][target][lun] == NULL) { - printf("dpt%d: Failed to allocate Target-Mode buffer\n", - dpt->unit); + printf("dpt%d: Failed to allocate " + "Target-Mode buffer\n", dpt->unit); ospl = splsoftcam(); dpt_Qpush_free(dpt, ccb); splx(ospl); return (NO_RESOURCES); } - dpt_set_target(0, dpt, channel, target, lun, mode, length, - offset, ccb); + dpt_set_target(0, dpt, channel, target, lun, mode, + length, offset, ccb); return (SUCCESSFULLY_REGISTERED); } else return (NOT_REGISTERED); @@ -832,103 +2092,6 @@ valid_unit: } } -/** - * This routine will try to send an EATA command to the DPT HBA. - * It will, by default, try AHZ times, waiting 10ms between tries. - * It returns 0 on success and 1 on failure. - * It assumes the caller protects it with splbio() or some such. - * - * IMPORTANT: We do NOT protect the ports from multiple access in here. - * You are expected to do it in the calling routine. - * Here, we cannot have any clue as to the scope of your work. - */ - -static int -dpt_send_eata_command(dpt_softc_t * dpt, eata_ccb_t * cmd_block, - u_int8_t command, int32_t retries, - u_int8_t ifc, u_int8_t code, u_int8_t code2) -{ - int32_t loop; - u_int8_t result; - u_int32_t test; - u_int32_t swapped_cmdaddr; - - if (!retries) - retries = 10000; - - /* - * I hate this polling nonsense. Wish there was a way to tell the DPT - * to go get commands at its own pace, or to interrupt when ready. - * In the mean time we will measure how many itterations it really - * takes. - */ - for (loop = 0; loop < retries; loop++) { - if ((dpt_inb(dpt, HA_RAUXSTAT) & HA_ABUSY) == 0) - break; - else - DELAY(50); - } - - if (loop < retries) { -#ifdef DPT_MEASURE_PERFORMANCE - if (loop > dpt->performance.max_eata_tries) - dpt->performance.max_eata_tries = loop; - - if (loop < dpt->performance.min_eata_tries) - dpt->performance.min_eata_tries = loop; -#endif - } else { -#ifdef DPT_MEASURE_PERFORMANCE - ++dpt->performance.command_too_busy; -#endif - return (1); - } - - /* The controller is alive, advance the wedge timer */ -#ifdef DPT_RESET_HBA - dpt->last_contact = microtime_now; -#endif - - if (cmd_block != NULL) { - swapped_cmdaddr = vtophys(cmd_block); - -#if (BYTE_ORDER == BIG_ENDIAN) - swapped_cmdaddr = ((swapped_cmdaddr >> 24) & 0xFF) - | ((swapped_cmdaddr >> 16) & 0xFF) - | ((swapped_cmdaddr >> 8) & 0xFF) - | (swapped_cmdaddr & 0xFF); -#endif - } else { - swapped_cmdaddr = 0; - } - /* And now the address */ - dpt_outl(dpt, HA_WDMAADDR, swapped_cmdaddr); - - if (command == EATA_CMD_IMMEDIATE) { - if (cmd_block == NULL) { - dpt_outb(dpt, HA_WCODE2, code2); - dpt_outb(dpt, HA_WCODE, code); - } - dpt_outb(dpt, HA_WIFC, ifc); - } - dpt_outb(dpt, HA_WCOMMAND, command); - - return (0); -} - -/** - * Send a command for immediate execution by the DPT - * See above function for IMPORTANT notes. - */ - -static INLINE int -dpt_send_immediate(dpt_softc_t * dpt, eata_ccb_t * cmd_block, - u_int8_t ifc, u_int8_t code, u_int8_t code2) -{ - return (dpt_send_eata_command(dpt, cmd_block, EATA_CMD_IMMEDIATE, - /* retries */ 1000000, ifc, code, code2)); -} - /* Return the state of the blinking DPT LED's */ u_int8_t dpt_blinking_led(dpt_softc_t * dpt) @@ -957,23 +2120,22 @@ dpt_blinking_led(dpt_softc_t * dpt) return (result); } -/** +/* * Execute a command which did not come from the kernel's SCSI layer. * The only way to map user commands to bus and target is to comply with the * standard DPT wire-down scheme: */ - int dpt_user_cmd(dpt_softc_t * dpt, eata_pt_t * user_cmd, caddr_t cmdarg, int minor_no) { - int channel, target, lun; - int huh; - int result; - int ospl; - int submitted; - dpt_ccb_t *ccb; - void *data; + dpt_ccb_t *ccb; + void *data; + int channel, target, lun; + int huh; + int result; + int ospl; + int submitted; data = NULL; channel = minor2hba(minor_no); @@ -981,16 +2143,16 @@ dpt_user_cmd(dpt_softc_t * dpt, eata_pt_t * user_cmd, lun = minor2lun(minor_no); if ((channel > (dpt->channels - 1)) - || (target > dpt->max_id) - || (lun > dpt->max_lun)) + || (target > dpt->max_id) + || (lun > dpt->max_lun)) return (ENXIO); if (target == dpt->sc_scsi_link[channel].adapter_targ) { /* This one is for the controller itself */ if ((user_cmd->eataID[0] != 'E') - || (user_cmd->eataID[1] != 'A') - || (user_cmd->eataID[2] != 'T') - || (user_cmd->eataID[3] != 'A')) { + || (user_cmd->eataID[1] != 'A') + || (user_cmd->eataID[2] != 'T') + || (user_cmd->eataID[3] != 'A')) { return (ENXIO); } } @@ -1194,1845 +2356,6 @@ dpt_user_cmd_done(dpt_softc_t * dpt, int bus, dpt_ccb_t * ccb) return; } -/* Detect Cache parameters and size */ - -void -dpt_detect_cache(dpt_softc_t * dpt) -{ - int size; - int bytes; - int result; - int ospl; - int ndx; - u_int8_t status; - char name[64]; - char *param; - char *buff; - eata_ccb_t cp; - - dpt_sp_t sp; - struct scsi_sense_data snp; - - /** - * We lock out the hardware early, so that we can either complete the - * operation or bust out right away. - */ - - sprintf(name, "FreeBSD DPT Driver, version %d.%d.%d", - DPT_RELEASE, DPT_VERSION, DPT_PATCH); - - /** - * Default setting, for best perfromance.. - * This is what virtually all cards default to.. - */ - dpt->cache_type = DPT_CACHE_WRITEBACK; - dpt->cache_size = 0; - - if ((buff = malloc(512, M_DEVBUF, M_NOWAIT)) == NULL) { - printf("dpt%d: Failed to allocate %d bytes for a work " - "buffer\n", - dpt->unit, 512); - return; - } - bzero(&cp, sizeof(eata_ccb_t)); - bzero((int8_t *) & sp, sizeof(dpt_sp_t)); - bzero((int8_t *) & snp, sizeof(struct scsi_sense_data)); - bzero(buff, 512); - - /* Setup the command structure */ - cp.Interpret = 1; - cp.DataIn = 1; - cp.Auto_Req_Sen = 1; - cp.reqlen = (u_int8_t) sizeof(struct scsi_sense_data); - - cp.cp_id = 0; /* who cares? The HBA will interpret.. */ - cp.cp_LUN = 0; /* In the EATA packet */ - cp.cp_lun = 0; /* In the SCSI command */ - cp.cp_channel = 0; - - cp.cp_scsi_cmd = EATA_CMD_DMA_SEND_CP; - cp.cp_len = 56; - cp.cp_dataDMA = htonl(vtophys(buff)); - cp.cp_statDMA = htonl(vtophys(&sp)); - cp.cp_reqDMA = htonl(vtophys(&snp)); - - cp.cp_identify = 1; - cp.cp_dispri = 1; - - /** - * Build the EATA Command Packet structure - * for a Log Sense Command. - */ - - cp.cp_cdb[0] = 0x4d; - cp.cp_cdb[1] = 0x0; - cp.cp_cdb[2] = 0x40 | 0x33; - cp.cp_cdb[7] = 1; - - cp.cp_datalen = htonl(512); - - ospl = splcam(); - result = dpt_send_eata_command(dpt, &cp, EATA_CMD_DMA_SEND_CP, - 10000, 0, 0, 0); - if (result != 0) { - printf("dpt%d WARNING: detect_cache() failed (%d) to send " - "EATA_CMD_DMA_SEND_CP\n", dpt->unit, result); - free(buff, M_TEMP); - splx(ospl); - return; - } - /* Wait for two seconds for a response. This can be slow... */ - for (ndx = 0; - (ndx < 20000) && - !((status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ); - ndx++) { - DELAY(50); - } - - /* Grab the status and clear interrupts */ - status = dpt_inb(dpt, HA_RSTATUS); - splx(ospl); - - /** - * Sanity check - */ - if (buff[0] != 0x33) { - return; - } - bytes = DPT_HCP_LENGTH(buff); - param = DPT_HCP_FIRST(buff); - - if (DPT_HCP_CODE(param) != 1) { - /** - * DPT Log Page layout error - */ - printf("dpt%d: NOTICE: Log Page (1) layout error\n", - dpt->unit); - return; - } - if (!(param[4] & 0x4)) { - dpt->cache_type = DPT_NO_CACHE; - return; - } - while (DPT_HCP_CODE(param) != 6) { - param = DPT_HCP_NEXT(param); - if ((param < buff) - || (param >= &buff[bytes])) { - return; - } - } - - if (param[4] & 0x2) { - /** - * Cache disabled - */ - dpt->cache_type = DPT_NO_CACHE; - return; - } - if (param[4] & 0x4) { - dpt->cache_type = DPT_CACHE_WRITETHROUGH; - return; - } - dpt->cache_size = param[5] - | (param[6] < 8) - | (param[7] << 16) - | (param[8] << 24); - - return; -} - -/** - * Initializes the softc structure and allocate all sorts of storage. - * Returns 0 on good luck, 1-n otherwise (error condition sensitive). - */ - -int -dpt_setup(dpt_softc_t * dpt, dpt_conf_t * conf) -{ - dpt_inq_t *board_data; - u_long rev; - int ndx; - int ospl; - dpt_ccb_t *ccb; - - board_data = dpt_get_board_data(dpt, conf->scsi_id0); - if (board_data == NULL) { - printf("dpt%d ERROR: Get_board_data() failure. " - "Setup ignored!\n", dpt->unit); - return (1); - } - dpt->total_ccbs_count = 0; - dpt->free_ccbs_count = 0; - dpt->waiting_ccbs_count = 0; - dpt->submitted_ccbs_count = 0; - dpt->completed_ccbs_count = 0; - - switch (ntohl(conf->splen)) { - case DPT_EATA_REVA: - dpt->EATA_revision = 'a'; - break; - case DPT_EATA_REVB: - dpt->EATA_revision = 'b'; - break; - case DPT_EATA_REVC: - dpt->EATA_revision = 'c'; - break; - case DPT_EATA_REVZ: - dpt->EATA_revision = 'z'; - break; - default: - dpt->EATA_revision = '?'; - } - - (void) memcpy(&dpt->board_data, board_data, sizeof(dpt_inq_t)); - - dpt->bustype = IS_PCI; /* We only support and operate on PCI devices */ - dpt->channels = conf->MAX_CHAN + 1; - dpt->max_id = conf->MAX_ID; - dpt->max_lun = conf->MAX_LUN; - dpt->state |= DPT_HA_OK; - - if (conf->SECOND) - dpt->primary = FALSE; - else - dpt->primary = TRUE; - - dpt->more_support = conf->MORE_support; - - if (board_data == NULL) { - rev = ('?' << 24) - | ('-' << 16) - | ('?' << 8) - | '-'; - } else { - /* Convert from network byte order to a "string" */ - rev = (dpt->board_data.firmware[0] << 24) - | (dpt->board_data.firmware[1] << 16) - | (dpt->board_data.firmware[2] << 8) - | dpt->board_data.firmware[3]; - } - - if (rev >= (('0' << 24) + ('7' << 16) + ('G' << 8) + '0')) - dpt->immediate_support = 1; - else - dpt->immediate_support = 0; - - dpt->broken_INQUIRY = FALSE; - - for (ndx = 0; ndx < MAX_CHANNELS; ndx++) - dpt->resetlevel[ndx] = DPT_HA_OK; - - dpt->cplen = ntohl(conf->cplen); - dpt->cppadlen = ntohs(conf->cppadlen); - dpt->queuesize = ntohs(conf->queuesiz); - - dpt->hostid[0] = conf->scsi_id0; - dpt->hostid[1] = conf->scsi_id1; - dpt->hostid[2] = conf->scsi_id2; - - if (conf->SG_64K) { - dpt->sgsize = SG_SIZE_BIG; - } else if ((ntohs(conf->SGsiz) < 1) - || (ntohs(conf->SGsiz) > SG_SIZE)) { - /* Just a sanity check */ - dpt->sgsize = SG_SIZE; - } else { - dpt->sgsize = ntohs(conf->SGsiz); - } - - if (dpt->sgsize > dpt_max_segs) - dpt->sgsize = dpt_max_segs; - - if (dpt_alloc_freelist(dpt) != 0) { - return (2); - } - /* Prepare for Target Mode */ - ospl = splsoftcam(); - dpt->target_mode_enabled = 1; - splx(ospl); - - return (0); -} - -/** - * The following function returns a pointer to a buffer which MUST be freed by - * The caller, a la free(result, M_DEVBUF) - * - * This function (and its like) assumes it is only running during system - * initialization! - */ -static dpt_inq_t * -dpt_get_board_data(dpt_softc_t * dpt, u_int32_t target_id) -{ - /* get_conf returns 512 bytes, most of which are zeros... */ - return ((dpt_inq_t *) dpt_get_conf(dpt, 0, target_id, - sizeof(dpt_inq_t), 0)); -} - -/** - * The following function returns a pointer to a buffer which MUST be freed by - * the caller, a la ``free(result, M_TEMP);'' - */ -dpt_conf_t * -dpt_get_conf(dpt_softc_t * dpt, u_int8_t page, u_int8_t target, - u_int8_t size, int extent) -{ - dpt_sp_t sp; - eata_ccb_t cp; - - /* Get_conf returns 512 bytes, most of which are zeros... */ - dpt_conf_t *config; - - u_short *ip; - u_int8_t status, sig1, sig2, sig3; - - int ndx; - int ospl; - int result; - - struct scsi_sense_data snp; - if ((config = (dpt_conf_t *) malloc(512, M_TEMP, M_WAITOK)) == NULL) - return (NULL); - - bzero(&cp, sizeof(eata_ccb_t)); - bzero((int8_t *) & sp, sizeof(dpt_sp_t)); - bzero(config, size); - - cp.Interpret = 1; - cp.DataIn = 1; - cp.Auto_Req_Sen = 1; - cp.reqlen = sizeof(struct scsi_sense_data); - - cp.cp_id = target; - cp.cp_LUN = 0; /* In the EATA packet */ - cp.cp_lun = 0; /* In the SCSI command */ - - cp.cp_scsi_cmd = INQUIRY; - cp.cp_len = size; - - cp.cp_extent = extent; - - cp.cp_page = page; - cp.cp_channel = 0; /* DNC, Interpret mode is set */ - cp.cp_identify = 1; - cp.cp_datalen = htonl(size); - cp.cp_dataDMA = htonl(vtophys(config)); - cp.cp_statDMA = htonl(vtophys(&sp)); - cp.cp_reqDMA = htonl(vtophys(&snp)); - cp.cp_viraddr = (u_int32_t) & cp; - - ospl = splcam(); - -#ifdef DPT_RESET_BOARD - printf("dpt%d: get_conf() resetting HBA at %x.\n", - dpt->unit, BaseRegister(dpt)); - dpt_outb(dpt, HA_WCOMMAND, EATA_CMD_RESET); - DELAY(750000); -#endif - - /** - * This could be a simple for loop, but we suspected the compiler To - * have optimized it a bit too much. Wait for the controller to - * become ready - */ - while ((((status = dpt_inb(dpt, HA_RSTATUS)) != (HA_SREADY | HA_SSC)) - && (status != (HA_SREADY | HA_SSC | HA_SERROR)) - && /* This results from the `wd' probe at our - * addresses */ - (status != (HA_SDRDY | HA_SERROR | HA_SDRQ))) - || (dpt_wait(dpt, HA_SBUSY, 0))) { - /** - * RAID Drives still Spinning up? (This should only occur if - * the DPT controller is in a NON PC (PCI?) platform). - */ - if (dpt_raid_busy(dpt)) { - printf("dpt%d WARNING: Get_conf() RSUS failed for " - "HBA at %x\n", dpt->unit, BaseRegister(dpt)); - free(config, M_TEMP); - splx(ospl); - return (NULL); - } - } - - DptStat_Reset_BUSY(&sp); - - /** - * XXXX We might want to do something more clever than aborting at - * this point, like resetting (rebooting) the controller and trying - * again. - */ - if ((result = dpt_send_eata_command(dpt, &cp, EATA_CMD_DMA_SEND_CP, - 10000, 0, 0, 0)) != 0) { - printf("dpt%d WARNING: Get_conf() failed (%d) to send " - "EATA_CMD_DMA_READ_CONFIG\n", - dpt->unit, result); - free(config, M_TEMP); - splx(ospl); - return (NULL); - } - /* Wait for two seconds for a response. This can be slow */ - for (ndx = 0; - (ndx < 20000) - && !((status = dpt_inb(dpt, HA_RAUXSTAT)) & HA_AIRQ); - ndx++) { - DELAY(50); - } - - /* Grab the status and clear interrupts */ - status = dpt_inb(dpt, HA_RSTATUS); - - splx(ospl); - - /** - * Check the status carefully. Return only if the - * command was successful. - */ - if (((status & HA_SERROR) == 0) - && (sp.hba_stat == 0) - && (sp.scsi_stat == 0) - && (sp.residue_len == 0)) { - return (config); - } - free(config, M_TEMP); - return (NULL); -} - -/* This gets called once per SCSI bus defined in config! */ - -int -dpt_attach(dpt_softc_t * dpt) -{ - struct scsibus_data *scbus; - - int ndx; - int idx; - int channel; - int target; - int lun; - - struct scsi_inquiry_data *inq; - - for (ndx = 0; ndx < dpt->channels; ndx++) { - /** - * We do not setup target nor lun on the assumption that - * these are being set for individual devices that will be - * attached to the bus later. - */ - dpt->sc_scsi_link[ndx].adapter_unit = dpt->unit; - dpt->sc_scsi_link[ndx].adapter_targ = dpt->hostid[ndx]; - dpt->sc_scsi_link[ndx].fordriver = 0; - dpt->sc_scsi_link[ndx].adapter_softc = dpt; - dpt->sc_scsi_link[ndx].adapter = &dpt_switch; - - /* - * These appear to be the # of openings per that DEVICE, not - * the DPT! - */ - dpt->sc_scsi_link[ndx].opennings = dpt->queuesize; - dpt->sc_scsi_link[ndx].device = &dpt_dev; - dpt->sc_scsi_link[ndx].adapter_bus = ndx; - - /** - * Prepare the scsibus_data area for the upperlevel scsi - * code. - */ - if ((scbus = scsi_alloc_bus()) == NULL) - return 0; - - dpt->sc_scsi_link[ndx].scsibus = ndx; - scbus->maxtarg = dpt->max_id; - scbus->adapter_link = &dpt->sc_scsi_link[ndx]; - - /* - * Invite the SCSI control layer to probe the busses. - */ - - dpt->handle_interrupts = 1; /* Now we are ready to work */ - scsi_attachdevs(scbus); - scbus = (struct scsibus_data *) NULL; - } - - return (1); -} - -/** - * Allocate another chunk of CCB's. Return 0 on success, 1 otherwise. - * If the free list is empty, we allocate a block of entries and add them - * to the list. We obtain, at most, DPT_FREE_LIST_INCREMENT CCB's at a time. - * If we cannot, we will try fewer entries until we succeed. - * For every CCB, we allocate a maximal Scatter/Gather list. - * This routine also initializes all the static data that pertains to this CCB. - */ - -/** - * XXX JGibbs - How big are your SG lists? Remeber that the kernel malloc - * uses buckets and mallocs in powers of two. So, if your - * SG list is not a power of two (up to PAGESIZE), you might - * waste a lot of memory. This was the reason the ahc driver - * allocats multiple SG lists at a time up to a PAGESIZE. - * Just something to keep in mind. - * YYY Simon - Up to 8192 entries, each entry is two ulongs, comes to 64K. - * In reality they are much smaller, so you are right. - */ -static int -dpt_alloc_freelist(dpt_softc_t * dpt) -{ - dpt_ccb_t *nccbp; - dpt_sg_t *sg; - u_int8_t *buff; - int ospl; - int incr; - int ndx; - int ccb_count; - - ccb_count = DPT_FREE_LIST_INCREMENT; - -#ifdef DPT_RESTRICTED_FREELIST - if (dpt->total_ccbs_count != 0) { - printf("dpt%d: Restricted FreeList, No more than %d entries " - "allowed\n", dpt->unit, dpt->total_ccbs_count); - return (-1); - } -#endif - - /** - * Allocate a group of dpt_ccb's. Work on the CCB's, one at a time - */ - ospl = splsoftcam(); - for (ndx = 0; ndx < ccb_count; ndx++) { - size_t alloc_size; - dpt_sg_t *sgbuff; - - alloc_size = sizeof(dpt_ccb_t); /* About 200 bytes */ - - if (alloc_size > PAGE_SIZE) { - /* - * Does not fit in a page. we try to fit in a - * contigious block of memory. If not, we will, later - * try to allocate smaller, and smaller chunks. There - * is a tradeof between memory and performance here. - * We know.this (crude) algorithm works well on - * machines with plenty of memory. We have seen it - * allocate in excess of 8MB. - */ - nccbp = (dpt_ccb_t *) contigmalloc(alloc_size, - M_DEVBUF, M_NOWAIT, - 0, ~0, - PAGE_SIZE, - 0x10000); - } else { - /* fits all in one page */ - nccbp = (dpt_ccb_t *) malloc(alloc_size, M_DEVBUF, - M_NOWAIT); - } - - if (nccbp == (dpt_ccb_t *) NULL) { - printf("dpt%d ERROR: Alloc_free_list() failed to " - "allocate %d\n", - dpt->unit, ndx); - splx(ospl); - return (-1); - } - alloc_size = sizeof(dpt_sg_t) * dpt->sgsize; - - if (alloc_size > PAGE_SIZE) { - /* Does not fit in a page */ - sgbuff = (dpt_sg_t *) contigmalloc(alloc_size, - M_DEVBUF, M_NOWAIT, - 0, ~0, - PAGE_SIZE, - 0x10000); - } else { - /* fits all in one page */ - sgbuff = (dpt_sg_t *) malloc(alloc_size, M_DEVBUF, - M_NOWAIT); - } - - /** - * If we cannot allocate sg lists, we do not want the entire - * list - */ - if (sgbuff == (dpt_sg_t *) NULL) { - free(nccbp, M_DEVBUF); - --ndx; - break; - } - /* Clean up the mailboxes */ - bzero(sgbuff, alloc_size); - bzero(nccbp, sizeof(dpt_ccb_t)); - /* - * this line is nullified by the one below. - * nccbp->eata_ccb.cp_dataDMA = (u_int32_t) sgbuff; Thanx, - * Mike! - */ - nccbp->sg_list = sgbuff; - - /** - * Now that we have a new block of free CCB's, put them into - * the free list. We always add to the head of the list and - * always take form the head of the list (LIFO). Each ccb - * has its own Scatter/Gather list. They are all of the same - * size, Regardless of how much is used. - * - * While looping through all the new CCB's, we initialize them - * properly. These items NEVER change; They are mostly - * self-pointers, relative to the CCB itself. - */ - dpt_Qpush_free(dpt, nccbp); - ++dpt->total_ccbs_count; - - nccbp->eata_ccb.cp_dataDMA = htonl(vtophys(nccbp->sg_list)); - nccbp->eata_ccb.cp_viraddr = (u_int32_t) nccbp; /* Unique */ - nccbp->eata_ccb.cp_statDMA = htonl(vtophys(&dpt->sp)); - - /** - * See dpt_intr for why we make ALL CCB's ``have the same'' - * Status Packet - */ - nccbp->eata_ccb.cp_reqDMA = htonl(vtophys(&nccbp->sense_data)); - } - - splx(ospl); - - return (0); -} - -/** - * Prepare the data area for DMA. - */ -static int -dpt_scatter_gather(dpt_softc_t * dpt, dpt_ccb_t * ccb, u_int32_t data_length, - caddr_t data) -{ - int seg; - int thiskv; - int bytes_this_seg; - int bytes_this_page; - u_int32_t datalen; - vm_offset_t vaddr; - u_int32_t paddr; - u_int32_t nextpaddr; - dpt_sg_t *sg; - - /* we start with Scatter/Gather OFF */ - ccb->eata_ccb.scatter = 0; - - if (data_length) { - if (ccb->flags & SCSI_DATA_IN) { - ccb->eata_ccb.DataIn = 1; - } - if (ccb->flags & SCSI_DATA_OUT) { - ccb->eata_ccb.DataOut = 1; - } - seg = 0; - datalen = data_length; - vaddr = (vm_offset_t) data; - paddr = vtophys(vaddr); - ccb->eata_ccb.cp_dataDMA = htonl(vtophys(ccb->sg_list)); - sg = ccb->sg_list; - - while ((datalen > 0) && (seg < dpt->sgsize)) { - /* put in the base address and length */ - sg->seg_addr = paddr; - sg->seg_len = 0; - - /* do it at least once */ - nextpaddr = paddr; - - while ((datalen > 0) && (paddr == nextpaddr)) { - u_int32_t size; - - /** - * This page is contiguous (physically) with - * the the last, just extend the length - */ - - /* how far to the end of the page */ - nextpaddr = trunc_page(paddr) + PAGE_SIZE; - - /* Compute the maximum size */ - - size = nextpaddr - paddr; - if (size > datalen) - size = datalen; - - sg->seg_len += size; - vaddr += size; - datalen -= size; - if (datalen > 0) - paddr = vtophys(vaddr); - } - - /* Next page isn't contiguous, finish the seg */ - sg->seg_addr = htonl(sg->seg_addr); - sg->seg_len = htonl(sg->seg_len); - seg++; - sg++; - } - - if (datalen) { - /* There's still data, must have run out of segs! */ - printf("dpt%d: scsi_cmd() Too Many (%d) DMA segs " - "(%d bytes left)\n", - dpt->unit, dpt->sgsize, datalen); - return (1); - } - if (seg == 1) { - /** - * After going through all this trouble, we - * still have only one segment. As an - * optimization measure, we will do the - * I/O as a single, non-S/G operation. - */ - ccb->eata_ccb.cp_dataDMA = ccb->sg_list[0].seg_addr; - ccb->eata_ccb.cp_datalen = ccb->sg_list[0].seg_len; - } else { - /** - * There is more than one segment. Use S/G. - */ - ccb->eata_ccb.scatter = 1; - ccb->eata_ccb.cp_datalen = - htonl(seg * sizeof(dpt_sg_t)); - } - } else { /* datalen == 0 */ - /* No data xfer */ - ccb->eata_ccb.cp_datalen = 0; - ccb->eata_ccb.cp_dataDMA = 0; - } - - return (0); -} - -/** - * This function obtains a CCB for a command and attempts to queue it to the - * Controller. - * - * CCB Obtaining: Is done by getting the first entry in the free list for the - * HBA. If we fail to get an scb, we send a TRY_LATER to the caller. - * - * XXX - JGibbs: XS_DRIVER_STUFFUP is equivalent to failing the I/O in the - * current SCSI layer. - * - * Command Queuing: Is done by putting the command at the end of the waiting - * queue. This assures fair chance for all commands to be processed. - * If the queue was empty (has only this, current command in it, we try to - * submit it to the HBA. Otherwise we return SUCCESSFULLY_QUEUED. - */ - -static int32_t -dpt_scsi_cmd(struct scsi_xfer * xs) -{ - dpt_softc_t *dpt; - int incr; - int ndx; - int ospl; - int huh; - - u_int32_t flags; - dpt_ccb_t *ccb; - u_int8_t status; - u_int32_t aux_status = 0; /* Initialized to shut GCC up */ - int result; - - int channel, target, lun; - - struct scsi_inquiry_data *inq; - - dpt = (dpt_softc_t *) xs->sc_link->adapter_softc; - - flags = xs->flags; - channel = xs->sc_link->adapter_bus; - target = xs->sc_link->target; - lun = xs->sc_link->lun; - -#ifdef DPT_HANDLE_TIMEOUTS - ospl = splsoftcam(); - if ((dpt->state & DPT_HA_TIMEOUTS_SET) == 0) { - dpt->state |= DPT_HA_TIMEOUTS_SET; - timeout(dpt_timeout, dpt, hz * 10); - } - splx(ospl); -#endif - -#ifdef DPT_LOST_IRQ - ospl = splcam(); - if ((dpt->state & DPT_LOST_IRQ_SET) == 0) { - printf("dpt%d: Initializing Lost IRQ Timer\n", dpt->unit); -#ifdef DPT_RESET_HBA - printf("dpt%d: HBA will reset if irresponsive for %d seconds\n", - dpt->unit, DPT_RESET_HBA); - dpt->last_contact = microtime_now; -#endif - dpt->state |= DPT_LOST_IRQ_SET; - timeout(dpt_irq_timeout, dpt, hz); - } - splx(ospl); -#endif - - /** - * Examine the command flags and handle properly. XXXX We are not - * handling external resets right now. Needs to be added. We do not - * care about the SCSI_NOSLEEP flag as we do not sleep here. We have - * to observe the SCSI_NOMASK flag, though. - */ - if (xs->flags & SCSI_RESET) { - printf("dpt%d: Unsupported option...\n" - " I refuse to Reset b%dt%du%d...!\n", - dpt->unit, channel, target, lun); - xs->error = XS_DRIVER_STUFFUP; - return (COMPLETE); - } - if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) { - printf("dpt%d ERROR: Command \"%s\" recieved for b%dt%du%d\n" - " but controller is shutdown; Aborting...\n", - dpt->unit, - scsi_cmd_name(xs->cmd->opcode), - channel, target, lun); - xs->error = XS_DRIVER_STUFFUP; - return (COMPLETE); - } - if (flags & ITSDONE) { - printf("dpt%d WARNING: scsi_cmd(%s) already done on " - "b%dt%du%d?!\n", - dpt->unit, scsi_cmd_name(xs->cmd->opcode), - channel, target, lun); - xs->flags &= ~ITSDONE; - } - if (!(flags & INUSE)) { - printf("dpt%d WARNING: Unit not in use in scsi_cmd(%s) " - "on b%dt%du%d?!\n", - dpt->unit, scsi_cmd_name(xs->cmd->opcode), channel, - target, lun); - xs->flags |= INUSE; - } - /** - * We do not want to be disrupted when doing this, or another caller - * may do the same thing. - */ - ospl = splsoftcam(); - - /* Process the free list */ - if ((TAILQ_EMPTY(&dpt->free_ccbs)) && dpt_alloc_freelist(dpt)) { - printf("dpt%d ERROR: Cannot allocate any more free CCB's.\n" - " Will try later\n", - dpt->unit); - xs->error = XS_DRIVER_STUFFUP; - splx(ospl); - return (COMPLETE); - } - /* Now grab the newest CCB */ - if ((ccb = dpt_Qpop_free(dpt)) == NULL) { - /* - * No need to panic here. We can continue with only as many - * CCBs as we have. - */ - printf("dpt%d ERROR: Got a NULL CCB from pop_free()\n", - dpt->unit); - xs->error = XS_DRIVER_STUFFUP; - splx(ospl); - return (COMPLETE); - } -#ifdef DPT_HANDLE_TIMEOUTS - ccb->status &= ~(DPT_CCB_STATE_ABORTED | DPT_CCB_STATE_MARKED_LOST); -#endif - - splx(ospl); - bcopy(xs->cmd, ccb->eata_ccb.cp_cdb, xs->cmdlen); - - /* Put all the CCB population stuff below */ - ccb->xs = xs; - ccb->flags = flags; - /* We NEVER reset the bus from a command */ - ccb->eata_ccb.SCSI_Reset = 0; - /* We NEVER re-boot the HBA from a * command */ - ccb->eata_ccb.HBA_Init = 0; - ccb->eata_ccb.Auto_Req_Sen = 1; /* We always want this feature */ - ccb->eata_ccb.reqlen = htonl(sizeof(struct scsi_sense_data)); - ccb->std_callback = NULL; - ccb->wrbuff_callback = NULL; - - if (xs->sc_link->target == xs->sc_link->adapter_targ) { - ccb->eata_ccb.Interpret = 1; - } else { - ccb->eata_ccb.Interpret = 0; - } - - ccb->eata_ccb.scatter = 0; /* S/G is OFF now */ - ccb->eata_ccb.DataIn = 0; - ccb->eata_ccb.DataOut = 0; - - /* At this time we do not deal with the RAID internals */ - ccb->eata_ccb.FWNEST = 0; - ccb->eata_ccb.Phsunit = 0; - /* We do not do SMARTROM kind of things */ - ccb->eata_ccb.I_AT = 0; - /* We do not inhibit the cache at this time */ - ccb->eata_ccb.Disable_Cache = 0; - ccb->eata_ccb.cp_channel = channel; - ccb->eata_ccb.cp_id = target; - ccb->eata_ccb.cp_LUN = lun; /** - * In the EATA packet. We do not - * change the SCSI command yet - */ - /* We are currently dealing with target LUN's, not ROUTINEs */ - ccb->eata_ccb.cp_luntar = 0; - - /** - * XXXX - We grant the target disconnect prvileges, except in polled - * mode (????). - */ - if ((ccb->flags & SCSI_NOMASK) || !dpt->handle_interrupts) { - ccb->eata_ccb.cp_dispri = 0; - } else { - ccb->eata_ccb.cp_dispri = 1; - } - - /* we always ask for Identify */ - ccb->eata_ccb.cp_identify = 1; - - /** - * These three are used for command queues and tags. How do we use - * them? - * - * XXX - JGibbs: Most likely like so: ccb->eata_ccb.cp_msg[0] = - * MSG_SIMPLEQ_TAG; ccb->eata_ccb.cp_msg[1] = tagid; - * ccb->eata_ccb.cp_msg[2] = 0; - * - * YYY - Shimon: Thanx! We still do not do that as the current - * firmware does it automatically, including on RAID arrays. - */ - - ccb->eata_ccb.cp_msg[0] = 0; - ccb->eata_ccb.cp_msg[1] = 0; - ccb->eata_ccb.cp_msg[2] = 0; - - /* End of CCB population */ - - if (dpt_scatter_gather(dpt, ccb, xs->datalen, xs->data) != 0) { - xs->error = XS_DRIVER_STUFFUP; - ospl = splsoftcam(); - dpt_Qpush_free(dpt, ccb); - splx(ospl); - return (COMPLETE); - } - xs->resid = 0; - xs->status = 0; - - /** - * This is the polled mode section. If we are here to honor - * SCSI_NOMASK, during scsi_attachdevs(), please notice that - * interrupts are ENABLED in the system (2.2.1) and that the DPT - * WILL generate them, unless we turn them off! - */ - - /** - * XXX - JGibbs: Polled mode was a botch at best. It's nice to - * know that it goes completely away with the CAM code. - * YYY - Simon: Take it out once the rest is stable. Be careful about - * how you wait for commands to complete when you switch - * to interrupt mode in the scanning code (initiated by - * scsi_attachdevs). - * Disabling it in 2.2 causes a hung system. - */ - - if ((ccb->flags & SCSI_NOMASK) || !dpt->handle_interrupts) { - /** - * This is an ``immediate'' command. Poll it! We poll by - * partially bypassing the queues. We first submit the - * command by asking dpt_run_queue() to queue it. Then we - * poll its status packet, until it completes. Then we give - * it to dpt_process_completion() to analyze and then we - * return. - */ - - /* - * Increase the number of commands queueable for a device. We - * force each device to the maximum allowed for its HBA. This - * appears wrong but all it will do is cause excessive - * commands to sit in our queue. On the other hand, we can - * burst as many commands as the DPT can take for a single - * device. We do it here, so only while in polled mode (early - * boot) do we waste time on it. We have no clean way - * to overrule sdattach() zeal in depressing the opennings - * back to one if it is more than 1. - */ - if (xs->sc_link->opennings < dpt->queuesize) { - xs->sc_link->opennings = dpt->queuesize; - } - /** - * This test only protects us from submitting polled - * commands during Non-polled times. We assumed polled - * commands go in serially, one at a time. BTW, we have NOT - * checked, nor verified the scope of the disaster that WILL - * follow going into polled mode after being in interrupt - * mode for any length of time. - */ - if (dpt->submitted_ccbs_count < dpt->queuesize) { - /** - * Submit the request to the DPT. Unfortunately, ALL - * this must be done as an atomic operation :-( - */ - ccb->eata_ccb.cp_viraddr = (u_int32_t) & ccb; -#define dpt_SP htonl(vtophys(&ccb->status_packet)) -#define dpt_sense htonl(vtophys(&ccb->sense_data)) - ccb->eata_ccb.cp_statDMA = dpt_SP; - ccb->eata_ccb.cp_reqDMA = dpt_sense; - - /* Try to queue a command */ - ospl = splcam(); - result = dpt_send_eata_command(dpt, &ccb->eata_ccb, - EATA_CMD_DMA_SEND_CP, - 0, 0, 0, 0); - - if (result != 0) { - dpt_Qpush_free(dpt, ccb); - xs->error = XS_DRIVER_STUFFUP; - splx(ospl); - return (COMPLETE); - } - } else { - xs->error = XS_DRIVER_STUFFUP; - dpt_Qpush_free(dpt, ccb); - splx(ospl); - return (COMPLETE); - } - - for (ndx = 0; - (ndx < xs->timeout) - && !((aux_status = dpt_inb(dpt, HA_RAUXSTAT)) - & HA_AIRQ); - ndx++) { - DELAY(50); - } - - /** - * Get the status and clear the interrupt flag on the - * controller - */ - status = dpt_inb(dpt, HA_RSTATUS); - splx(ospl); - - ccb->status_reg = status; - ccb->aux_status_reg = aux_status; - /* This will setup the xs flags */ - dpt_process_completion(dpt, ccb); - - ospl = splsoftcam(); - if ((status & HA_SERROR) || (ndx == xs->timeout)) { - xs->error = XS_DRIVER_STUFFUP; - } -#ifdef DPT_RESET_HBA - else { - /* - * We received a reply and did not time out. - * Advance the wedge counter. - */ - dpt->last_contact = microtime_now; - } -#endif /* DPT_RESET_HBA */ - - dpt_Qpush_free(dpt, ccb); - splx(ospl); - return (COMPLETE); - } else { - /** - * Not a polled command. - * The command can be queued normally. - * We start a critical section PRIOR to submitting to the DPT, - * and end it AFTER it moves to the submitted queue. - * If not, we cal (and will!) be hit with a completion - * interrupt while the command is in suspense between states. - */ - - ospl = splsoftcam(); - ccb->transaction_id = ++dpt->commands_processed; - -#ifdef DPT_MEASURE_PERFORMANCE - ++dpt->performance.command_count[ccb->eata_ccb.cp_scsi_cmd]; - ccb->command_started = microtime_now; -#endif - dpt_Qadd_waiting(dpt, ccb); - splx(ospl); - - dpt_sched_queue(dpt); - } - - return (SUCCESSFULLY_QUEUED); -} - -/** - * This function returns the transfer size in bytes, - * as a function of the maximum number of Scatter/Gather - * segments. It should do so for a given HBA, but right now it returns - * dpt_min_segs, which is the SMALLEST number, from the ``weakest'' HBA found. - */ - -static void -dptminphys(struct buf * bp) -{ - /** - * This IS a performance sensitive routine. - * It gets called at least once per I/O. Sometimes more - */ - - if (dpt_min_segs == 0) { - panic("DPT: Minphys without attach!\n"); - } - if (bp->b_bcount > ((dpt_min_segs - 1) * PAGE_SIZE)) { -#ifdef DPT_DEBUG_MINPHYS - printf("DPT: Block size of %lx is larger than %x. Truncating\n", - bp->b_bcount, ((dpt_min_segs - 1) * PAGE_SIZE)); -#endif - bp->b_bcount = ((dpt_min_segs - 1) * PAGE_SIZE); - } -} - -/* - * This function goes to the waiting queue, peels off a request, gives it to - * the DPT HBA and returns. It takes care of some housekeeping details first. - * The requests argument tells us how many requests to try and send to the - * DPT. A requests = 0 will attempt to send as many as the controller can - * take. - */ - -static void -dpt_run_queue(dpt_softc_t * dpt, int requests) -{ - int req; - int ospl; - int ndx; - int result; - - u_int8_t status, aux_status; - - eata_ccb_t *ccb; - dpt_ccb_t *dccb; - - if (TAILQ_EMPTY(&dpt->waiting_ccbs)) { - return; /* Nothing to do if the list is empty */ - } - if (!requests) - requests = dpt->queuesize; - - /* Main work loop */ - for (req = 0; (req < requests) && dpt->waiting_ccbs_count - && (dpt->submitted_ccbs_count < dpt->queuesize); req++) { - /** - * Move the request from the waiting list to the submitted - * list, and submit to the DPT. - * We enter a critical section BEFORE even looking at the - * queue, and exit it AFTER the ccb has moved to a - * destination queue. - * This is normally the submitted queue but can be the waiting - * queue again, if pushing the command into the DPT failed. - */ - - ospl = splsoftcam(); - dccb = TAILQ_FIRST(&dpt->waiting_ccbs); - - if (dccb == NULL) { - /* We have yet to see one report of this condition */ - panic("dpt%d ERROR: Race condition in run_queue " - "(w%ds%d)\n", - dpt->unit, dpt->waiting_ccbs_count, - dpt->submitted_ccbs_count); - splx(ospl); - return; - } - dpt_Qremove_waiting(dpt, dccb); - splx(ospl); - - /** - * Assign exact values here. We manipulate these values - * indirectly elsewhere, so BE CAREFUL! - */ - dccb->eata_ccb.cp_viraddr = (u_int32_t) dccb; - dccb->eata_ccb.cp_statDMA = htonl(vtophys(&dpt->sp)); - dccb->eata_ccb.cp_reqDMA = htonl(vtophys(&dccb->sense_data)); - - if (dccb->xs != NULL) - bzero(&dccb->xs->sense, sizeof(struct scsi_sense_data)); - - /* Try to queue a command */ - ospl = splcam(); - - if ((result = dpt_send_eata_command(dpt, &dccb->eata_ccb, - EATA_CMD_DMA_SEND_CP, 0, - 0, 0, 0)) != 0) { - dpt_Qpush_waiting(dpt, dccb); - splx(ospl); - return; - } - dpt_Qadd_submitted(dpt, dccb); - splx(ospl); - } -} - -/** - * This is the interrupt handler for the DPT driver. - * This routine runs at splcam (or whatever was configured for this device). - */ - -void -dpt_intr(void *arg) -{ - dpt_softc_t *dpt; - dpt_softc_t *ldpt; - - u_int8_t status, aux_status; - - dpt_ccb_t *dccb; - dpt_ccb_t *tccb; - eata_ccb_t *ccb; - - dpt = (dpt_softc_t *) arg; - -#ifdef DPT_INTR_DELAY - DELAY(DPT_INTR_DELAY); -#endif - -#ifdef DPT_MEASURE_PERFORMANCE - dpt->performance.intr_started = microtime_now; -#endif - - /* First order of business is to check if this interrupt is for us */ - aux_status = dpt_inb(dpt, HA_RAUXSTAT); - if (!(aux_status & HA_AIRQ)) { -#ifdef DPT_LOST_IRQ - if (dpt->state & DPT_LOST_IRQ_ACTIVE) { - dpt->state &= ~DPT_LOST_IRQ_ACTIVE; - return; - } -#endif -#ifdef DPT_MEASURE_PERFORMANCE - ++dpt->performance.spurious_interrupts; -#endif - return; - } - - /* The controller is alive, advance the wedge timer */ -#ifdef DPT_RESET_HBA - dpt->last_contact = microtime_now; -#endif - - if (!dpt->handle_interrupts) { -#ifdef DPT_MEASURE_PERFORMANCE - ++dpt->performance.aborted_interrupts; -#endif - status = dpt_inb(dpt, HA_RSTATUS); /* This CLEARS interrupts! */ - return; - } - /** - * What we want to do now, is to capture the status, all of it, move - * it where it belongs, wake up whoever sleeps waiting to process - * this result, and get out of here. - */ - - dccb = dpt->sp.ccb; /** - * There is a very SERIOUS and dangerous - * assumption here. We assume that EVERY - * interrupt is in response to some request we - * put to the DPT. IOW, we assume that the - * Virtual Address of CP always has a valid - * pointer that we put in! How will the DPT - * behave if it is in Target mode? How does it - * (and our driver) know it switches from - * Initiator to target? What will the SP be - * when a target mode interrupt is received? - */ - -#ifdef DPT_VERIFY_HINTR - dpt->sp.ccb = (dpt_ccb_t *) 0x55555555; -#else - dpt->sp.ccb = (dpt_ccb_t *) NULL; -#endif - -#ifdef DPT_HANDLE_TIMEOUTS - if (dccb->state & DPT_CCB_STATE_MARKED_LOST) { - u_int32_t age; - struct scsi_xfer *xs = dccb->xs; - - age = dpt_time_delta(dccb->command_started, microtime_now); - - printf("dpt%d: Salvaging Tx %d from the jaws of destruction " - "(%d/%d)\n", - dpt->unit, dccb->transaction_id, xs->timeout, age); - dccb->state |= DPT_CCB_STATE_MARKED_SALVAGED; - dccb->state &= ~DPT_CCB_STATE_MARKED_LOST; - } -#endif - - /* Ignore status packets with EOC not set */ - if (dpt->sp.EOC == 0) { - printf("dpt%d ERROR: Request %d recieved with clear EOC.\n" - " Marking as LOST.\n", - dpt->unit, dccb->transaction_id); -#ifdef DPT_VERIFY_HINTR - dpt->sp.ccb = (dpt_sp_t *) 0x55555555; -#else - dpt->sp.ccb = (dpt_sp_t *) NULL; -#endif - -#ifdef DPT_MEASURE_PERFORMANCE - ++dpt->performance.aborted_interrupts; -#endif - -#ifdef DPT_HANDLE_TIMEOUTS - dccb->state |= DPT_CCB_STATE_MARKED_LOST; -#endif - /* This CLEARS the interrupt! */ - status = dpt_inb(dpt, HA_RSTATUS); - return; - } - dpt->sp.EOC = 0; - -#ifdef DPT_VERIFY_HINTR - /* - * Make SURE the next caller is legitimate. If they are not, we will - * find 0x55555555 here. We see 0x000000 or 0xffffffff when the PCi - * bus has DMA troubles (as when behing a PCI-PCI * bridge . - */ - if ((dccb == NULL) - || (dccb == (dpt_ccb_t *) ~ 0) - || (dccb == (dpt_ccb_t *) 0x55555555)) { - printf("dpt%d: BAD (%p) CCB in SP (AUX status = %s).\n", - dpt->unit, (void *)dccb, - i2bin((unsigned long) aux_status, - sizeof(aux_status) * 8)); -#ifdef DPT_MEASURE_PERFORMANCE - ++dpt->performance.aborted_interrupts; -#endif - /* This CLEARS the interrupt! */ - status = dpt_inb(dpt, HA_RSTATUS); - return; - } - for (tccb = TAILQ_FIRST(&dpt->submitted_ccbs); - (tccb != NULL) && (tccb != dccb); - tccb = TAILQ_NEXT(tccb, links)); - if (tccb == NULL) { - printf("dpt%d: %p is not in the SUBMITTED queue\n", - dpt->unit, (void *)dccb); - - for (tccb = TAILQ_FIRST(&dpt->completed_ccbs); - (tccb != NULL) && (tccb != dccb); - tccb = TAILQ_NEXT(tccb, links)); - if (tccb != NULL) - printf("dpt%d: %p is in the COMPLETED queue\n", - dpt->unit, (void *)dccb); - - for (tccb = TAILQ_FIRST(&dpt->waiting_ccbs); - (tccb != NULL) && (tccb != dccb); - tccb = TAILQ_NEXT(tccb, links)); - if (tccb != NULL) - printf("dpt%d: %p is in the WAITING queue\n", - dpt->unit, (void *)dccb); - - for (tccb = TAILQ_FIRST(&dpt->free_ccbs); - (tccb != NULL) && (tccb != dccb); - tccb = TAILQ_NEXT(tccb, links)); - if (tccb != NULL) - printf("dpt%d: %p is in the FREE queue\n", - dpt->unit, (void *)dccb); - -#ifdef DPT_MEASURE_PERFORMANCE - ++dpt->performance.aborted_interrupts; -#endif - /* This CLEARS the interrupt! */ - status = dpt_inb(dpt, HA_RSTATUS); - return; - } -#endif /* DPT_VERIFY_HINTR */ - - /** - * Copy the status packet from the general area to the dpt_ccb. - * According to Mark Salyzyn, we only need few pieces of it. - * Originally we had: - * bcopy((void *) &dpt->sp, (void *) &dccb->status_packet, - * sizeof(dpt_sp_t)); - */ - dccb->status_packet.hba_stat = dpt->sp.hba_stat; - dccb->status_packet.scsi_stat = dpt->sp.scsi_stat; - dccb->status_packet.residue_len = dpt->sp.residue_len; - - /* Make sure the EOC bit is OFF! */ - dpt->sp.EOC = 0; - - /* Clear interrupts, check for error */ - if ((status = dpt_inb(dpt, HA_RSTATUS)) & HA_SERROR) { - /** - * Error Condition. Check for magic cookie. Exit this test - * on earliest sign of non-reset condition - */ - - /* Check that this is not a board reset interrupt */ - if (dpt_just_reset(dpt)) { - printf("dpt%d: HBA rebooted.\n" - " All transactions should be " - "resubmitted\n", - dpt->unit); - - printf("dpt%d: >>---->> This is incomplete, fix me" - ".... <<----<<", - dpt->unit); - printf(" Incomplete Code; Re-queue the lost " - "commands\n"); - Debugger("DPT Rebooted"); - -#ifdef DPT_MEASURE_PERFORMANCE - ++dpt->performance.aborted_interrupts; -#endif - return; - } - } - dccb->status_reg = status; - dccb->aux_status_reg = aux_status; - - /* Mark BOTH queues as busy */ - dpt->queue_status |= (DPT_SUBMITTED_QUEUE_ACTIVE - | DPT_COMPLETED_QUEUE_ACTIVE); - dpt_Qremove_submitted(dpt, dccb); - dpt_Qadd_completed(dpt, dccb); - dpt->queue_status &= ~(DPT_SUBMITTED_QUEUE_ACTIVE - | DPT_COMPLETED_QUEUE_ACTIVE); - dpt_sched_queue(dpt); - -#ifdef DPT_MEASURE_PERFORMANCE - { - u_int32_t result; - - result = dpt_time_delta(dpt->performance.intr_started, microtime_now); - - if (result != ~0) { - if (dpt->performance.max_intr_time < result) - dpt->performance.max_intr_time = result; - - if (result < dpt->performance.min_intr_time) { - dpt->performance.min_intr_time = result; - } - } - } -#endif -} - -/* - * This function is the DPT_ISR Software Interrupt Service Routine. When the - * DPT completes a SCSI command, it puts the results in a Status Packet, sets - * up two 1-byte registers and generates an interrupt. We catch this - * interrupt in dpt_intr and copy the whole status to the proper CCB. Once - * this is done, we generate a software interrupt that calls this routine. - * The routine then scans ALL the complete queues of all the DPT HBA's and - * processes ALL the commands that are in the queue. - * - * XXXX REMEMBER: We always scan ALL the queues of all the HBA's. Always - * starting with the first controller registered (dpt0). This creates - * an ``unfair'' opportunity for the first controllers in being served. - * Careful instrumentation may prove a need to change this policy. - * - * This command rns at splSOFTcam. Remember that. - */ - -static void -dpt_sintr(void) -{ - dpt_softc_t *dpt; - int ospl; - - /* Find which DPT needs help */ - for (dpt = TAILQ_FIRST(&dpt_softc_list); - dpt != NULL; - dpt = TAILQ_NEXT(dpt, links)) { - /* - * Drain the completed queue, to make room for new, " waiting - * requests. We change to splcam to block interrupts from - * mucking with " the completed queue - */ - ospl = splcam(); - if (dpt->queue_status & DPT_SINTR_ACTIVE) { - splx(ospl); - continue; - } - dpt->queue_status |= DPT_SINTR_ACTIVE; - - if (!TAILQ_EMPTY(&dpt->completed_ccbs)) { - splx(ospl); - dpt_complete(dpt); - ospl = splcam(); - } - /* Submit as many waiting requests as the DPT can take */ - if (!TAILQ_EMPTY(&dpt->waiting_ccbs)) { - dpt_run_queue(dpt, 0); - } - dpt->queue_status &= ~DPT_SINTR_ACTIVE; - splx(ospl); - } -} - -/** - * Scan the complete queue for a given controller and process ALL the completed - * commands in the queue. - */ - -static void -dpt_complete(dpt_softc_t * dpt) -{ - dpt_ccb_t *ccb; - int ospl; - - ospl = splcam(); - - if (dpt->queue_status & DPT_COMPLETED_QUEUE_ACTIVE) { - splx(ospl); - return; - } - dpt->queue_status |= DPT_COMPLETED_QUEUE_ACTIVE; - - while ((ccb = TAILQ_FIRST(&dpt->completed_ccbs)) != NULL) { - struct scsi_xfer *xs; - - dpt_Qremove_completed(dpt, ccb); - splx(ospl); - - /* Process this completed request */ - if (dpt_process_completion(dpt, ccb) == 0) { - xs = ccb->xs; - - if (ccb->std_callback != NULL) { - (ccb->std_callback) (dpt, ccb->eata_ccb.cp_channel, - ccb); - } else { - ospl = splcam(); - dpt_Qpush_free(dpt, ccb); - splx(ospl); - -#ifdef DPT_MEASURE_PERFORMANCE - { - u_int32_t result; - -#define time_delta dpt_time_delta(ccb->command_started, ccb->command_ended) -#define maxctime dpt->performance.max_command_time[ccb->eata_ccb.cp_scsi_cmd] -#define minctime dpt->performance.min_command_time[ccb->eata_ccb.cp_scsi_cmd] - - ccb->command_ended = microtime_now; - result = time_delta; - - if (result != ~0) { - if (maxctime < result) { - maxctime = result; - } - if ((minctime == 0) - || (minctime > result)) - minctime = result; - } - } -#endif - - scsi_done(xs); - } - ospl = splcam(); - } - } - splx(ospl); - - /** - * As per Justin's suggestion, we now will call the run_queue for - * this HBA. This is done in case there are left-over requests that - * were not submitted yet. - */ - dpt_run_queue(dpt, 0); - ospl = splsoftcam(); - dpt->queue_status &= ~DPT_COMPLETED_QUEUE_ACTIVE; - splx(ospl); -} - -#ifdef DPT_MEASURE_PERFORMANCE -/** - * Given a dpt_ccb and a scsi_xfr structures, - * this functions translates the result of a SCSI operation. - * It returns values in the structures pointed by the arguments. - * This function does NOT attempt to protect itself from bad influence! - */ - -#define WRITE_OP 1 -#define READ_OP 2 -#define min_submitR dpt->performance.read_by_size_min_time[index] -#define max_submitR dpt->performance.read_by_size_max_time[index] -#define min_submitW dpt->performance.write_by_size_min_time[index] -#define max_submitW dpt->performance.write_by_size_max_time[index] - -static void -dpt_IObySize(dpt_softc_t * dpt, dpt_ccb_t * ccb, int op, int index) -{ - if (op == READ_OP) { - ++dpt->performance.read_by_size_count[index]; - if (ccb->submitted_time < min_submitR) - min_submitR = ccb->submitted_time; - - if (ccb->submitted_time > max_submitR) - max_submitR = ccb->submitted_time; - } else { /* WRITE operation */ - ++dpt->performance.write_by_size_count[index]; - if (ccb->submitted_time < min_submitW) - min_submitW = ccb->submitted_time; - - if (ccb->submitted_time > max_submitW) - max_submitW = ccb->submitted_time; - } -} -#endif - -static int -dpt_process_completion(dpt_softc_t * dpt, - dpt_ccb_t * ccb) -{ - int ospl; - struct scsi_xfer *xs; - - if (ccb == NULL) { - panic("dpt%d: Improper argumet to process_completion (%p)\n", - dpt->unit, (void *)ccb); - } else { - xs = ccb->xs; - } - -#ifdef DPT_MEASURE_PERFORMANCE - { - u_int32_t size; - struct scsi_rw_big *cmd; - int op_type; - - cmd = (struct scsi_rw_big *) &ccb->eata_ccb.cp_scsi_cmd; - - switch (cmd->op_code) { - case 0xa8: /* 12-byte READ */ - case 0x08: /* 6-byte READ */ - case 0x28: /* 10-byte READ */ - op_type = READ_OP; - break; - case 0x0a: /* 6-byte WRITE */ - case 0xaa: /* 12-byte WRITE */ - case 0x2a: /* 10-byte WRITE */ - op_type = WRITE_OP; - break; - default: - op_type = 0; - break; - } - - if (op_type != 0) { - - size = (((u_int32_t) cmd->length2 << 8) - | ((u_int32_t) cmd->length1)) << 9; - - switch (size) { - case 512: - dpt_IObySize(dpt, ccb, op_type, SIZE_512); - break; - case 1024: - dpt_IObySize(dpt, ccb, op_type, SIZE_1K); - break; - case 2048: - dpt_IObySize(dpt, ccb, op_type, SIZE_2K); - break; - case 4096: - dpt_IObySize(dpt, ccb, op_type, SIZE_4K); - break; - case 8192: - dpt_IObySize(dpt, ccb, op_type, SIZE_8K); - break; - case 16384: - dpt_IObySize(dpt, ccb, op_type, SIZE_16K); - break; - case 32768: - dpt_IObySize(dpt, ccb, op_type, SIZE_32K); - break; - case 65536: - dpt_IObySize(dpt, ccb, op_type, SIZE_64K); - break; - default: - if (size > (1 << 16)) - dpt_IObySize(dpt, ccb, op_type, - SIZE_BIGGER); - - else - dpt_IObySize(dpt, ccb, op_type, - SIZE_OTHER); - break; - } - } - } -#endif /* DPT_MEASURE_PERFORMANCE */ - - - switch ((int) ccb->status_packet.hba_stat) { - case HA_NO_ERROR: - if (xs != NULL) { - xs->error = XS_NOERROR; - xs->flags |= SCSI_ITSDONE; - } - break; - case HA_ERR_SEL_TO: - case HA_ERR_CMD_TO: - if (xs != NULL) { - xs->error |= XS_SELTIMEOUT; - xs->flags |= SCSI_ITSDONE; - } - break; - case HA_SCSIBUS_RESET: - case HA_CP_ABORTED: - case HA_CP_RESET: - case HA_PCI_PARITY: - case HA_PCI_MABORT: - case HA_PCI_TABORT: - case HA_PCI_STABORT: - case HA_BUS_PARITY: - case HA_UNX_MSGRJCT: - if (ccb->retries++ > DPT_RETRIES) { - if (xs != NULL) { - xs->error |= XS_SENSE; - xs->flags |= SCSI_ITSDONE; - } - } else { - ospl = splsoftcam(); - dpt_Qpush_waiting(dpt, ccb); - splx(ospl); - dpt_sched_queue(dpt); - } - break; - case HA_HBA_POWER_UP: - case HA_UNX_BUSPHASE: - case HA_UNX_BUS_FREE: - case HA_SCSI_HUNG: - case HA_RESET_STUCK: - if (ccb->retries++ > DPT_RETRIES) { - if (xs != NULL) { - xs->error |= XS_SENSE; - xs->flags |= SCSI_ITSDONE; - } - } else { - ospl = splsoftcam(); - dpt_Qpush_waiting(dpt, ccb); - splx(ospl); - dpt_sched_queue(dpt); - return (1); - } - break; - case HA_RSENSE_FAIL: - if (ccb->status_packet.EOC) { - if (xs != NULL) { - xs->error |= XS_SENSE; - xs->flags |= SCSI_ITSDONE; - } - } else { - if (ccb->retries++ > DPT_RETRIES) { - if (xs != NULL) { - xs->error |= XS_SENSE; - xs->flags |= SCSI_ITSDONE; - } - } else { - ospl = splsoftcam(); - dpt_Qpush_waiting(dpt, ccb); - splx(ospl); - dpt_sched_queue(dpt); - return (1); - } - } - break; - case HA_PARITY_ERR: - case HA_CP_ABORT_NA: - case HA_CP_RESET_NA: - case HA_ECC_ERR: - if (xs != NULL) { - xs->error |= XS_SENSE; - xs->flags |= SCSI_ITSDONE; - } - break; - default: - printf("dpt%d: Undocumented Error %x", - dpt->unit, ccb->status_packet.hba_stat); - if (xs != NULL) { - xs->error |= XS_SENSE; - xs->flags |= SCSI_ITSDONE; - } - Debugger("Please mail this message to shimon@i-connect.net"); - break; - } - - if (xs != NULL) { - if ((xs->error & XS_SENSE)) - bcopy(&ccb->sense_data, &xs->sense, - sizeof(struct scsi_sense_data)); - - if (ccb->status_packet.residue_len != 0) { - xs->flags |= SCSI_RESID_VALID; - xs->resid = ccb->status_packet.residue_len; - } - } - return (0); -} - -#ifdef DPT_LOST_IRQ -/** - * This functions handles the calling of the interrupt routine on a periodic - * basis. - * It is a completely ugly hack which purpose is to handle the problem of - * missing interrupts on certain platforms.. - * - * An additional task is to optionally check if the controller is wedged. - * A wedeged controller is one which has not accepted a command, nor sent - * an interrupt in the last DPT_RESET_HBA seconds. - */ - -static void -dpt_irq_timeout(void *arg) -{ - dpt_softc_t *dpt = (dpt_softc_t *) arg; - int ospl; - - - if (!(dpt->state & DPT_LOST_IRQ_ACTIVE)) { - ospl = splcam(); - dpt->state |= DPT_LOST_IRQ_ACTIVE; - dpt_intr(dpt); - splx(ospl); - if (dpt->state & DPT_LOST_IRQ_ACTIVE) { - printf("dpt %d: %d lost Interrupts Recovered\n", - dpt->unit, ++dpt->lost_interrupts); - } -#ifdef DPT_RESET_HBA - { - int max_wedge, contact_delta; - - if (TAILQ_EMPTY(&dpt->waiting_ccbs)) { - dpt->last_contact = microtime_now; - } else { - /* If nothing is waiting, we cannot assume we are wedged */ - if (DPT_RESET_HBA < 1) - max_wedge = 1000000; - else - max_wedge = 1000000 * DPT_RESET_HBA; - - contact_delta = dpt_time_delta(dpt->last_contact, - microtime_now); - - if (contact_delta > max_wedge) { - printf("dpt%d: Appears wedged for %d.%d (%d.0)seconds.\n" - " Resetting\n", - dpt->unit, contact_delta/1000000, - (contact_delta % 1000000) / 100000, - DPT_RESET_HBA); - dpt_reset_hba(dpt); - } - } - } -#endif /* DPT_RESET_HBA */ - - dpt->state &= ~DPT_LOST_IRQ_ACTIVE; - } - timeout(dpt_irq_timeout, (caddr_t) dpt, hz * 1); -} - -#endif /* DPT_LOST_IRQ */ - #ifdef DPT_HANDLE_TIMEOUTS /** * This function walks down the SUBMITTED queue. @@ -3186,648 +2509,4 @@ dpt_timeout(void *arg) #endif /* DPT_HANDLE_TIMEOUTS */ -/* - * Remove a ccb from the completed queue - */ -static INLINE_Q void -dpt_Qremove_completed(dpt_softc_t * dpt, dpt_ccb_t * ccb) -{ -#ifdef DPT_MEASURE_PERFORMANCE - u_int32_t complete_time; - - complete_time = dpt_time_delta(ccb->command_ended, microtime_now); - - if (complete_time != ~0) { - if (dpt->performance.max_complete_time < complete_time) - dpt->performance.max_complete_time = complete_time; - if (complete_time < dpt->performance.min_complete_time) - dpt->performance.min_complete_time = complete_time; - } -#endif - - TAILQ_REMOVE(&dpt->completed_ccbs, ccb, links); - --dpt->completed_ccbs_count; /* One less completed ccb in the - * queue */ - if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) - wakeup(&dpt); -} - -/** - * Pop the most recently used ccb off the (HEAD of the) FREE ccb queue - */ -static INLINE_Q dpt_ccb_t * -dpt_Qpop_free(dpt_softc_t * dpt) -{ - dpt_ccb_t *ccb; - - if ((ccb = TAILQ_FIRST(&dpt->free_ccbs)) == NULL) { - if (dpt_alloc_freelist(dpt)) - return (ccb); - else - return (dpt_Qpop_free(dpt)); - } else { - TAILQ_REMOVE(&dpt->free_ccbs, ccb, links); - --dpt->free_ccbs_count; - } - - return (ccb); -} - -/** - * Put a (now freed) ccb back into the HEAD of the FREE ccb queue - */ -static INLINE_Q void -dpt_Qpush_free(dpt_softc_t * dpt, dpt_ccb_t * ccb) -{ -#ifdef DPT_FREELIST_IS_STACK - TAILQ_INSERT_HEAD(&dpt->free_ccbs, ccb, links); -#else - TAILQ_INSERT_TAIL(&dpt->free_ccbs, ccb, links); #endif - - ++dpt->free_ccbs_count; -} - -/** - * Add a request to the TAIL of the WAITING ccb queue - */ -static INLINE_Q void -dpt_Qadd_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb) -{ - TAILQ_INSERT_TAIL(&dpt->waiting_ccbs, ccb, links); - ++dpt->waiting_ccbs_count; - -#ifdef DPT_MEASURE_PERFORMANCE - ccb->command_ended = microtime_now; - if (dpt->waiting_ccbs_count > dpt->performance.max_waiting_count) - dpt->performance.max_waiting_count = dpt->waiting_ccbs_count; -#endif - - if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) - wakeup(&dpt); -} - -/** - * Add a request to the HEAD of the WAITING ccb queue - */ -static INLINE_Q void -dpt_Qpush_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb) -{ - TAILQ_INSERT_HEAD(&dpt->waiting_ccbs, ccb, links); - ++dpt->waiting_ccbs_count; - -#ifdef DPT_MEASURE_PERFORMANCE - ccb->command_ended = microtime_now; - - if (dpt->performance.max_waiting_count < dpt->waiting_ccbs_count) - dpt->performance.max_waiting_count = dpt->waiting_ccbs_count; - -#endif - - if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) - wakeup(&dpt); -} - -/** - * Remove a ccb from the waiting queue - */ -static INLINE_Q void -dpt_Qremove_waiting(dpt_softc_t * dpt, dpt_ccb_t * ccb) -{ -#ifdef DPT_MEASURE_PERFORMANCE - u_int32_t waiting_time; - - waiting_time = dpt_time_delta(ccb->command_ended, microtime_now); - - if (waiting_time != ~0) { - if (dpt->performance.max_waiting_time < waiting_time) - dpt->performance.max_waiting_time = waiting_time; - if (waiting_time < dpt->performance.min_waiting_time) - dpt->performance.min_waiting_time = waiting_time; - } -#endif - - TAILQ_REMOVE(&dpt->waiting_ccbs, ccb, links); - --dpt->waiting_ccbs_count; /* One less waiting ccb in the queue */ - - if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) - wakeup(&dpt); -} - -/** - * Add a request to the TAIL of the SUBMITTED ccb queue - */ -static INLINE_Q void -dpt_Qadd_submitted(dpt_softc_t * dpt, dpt_ccb_t * ccb) -{ - TAILQ_INSERT_TAIL(&dpt->submitted_ccbs, ccb, links); - ++dpt->submitted_ccbs_count; - -#ifdef DPT_MEASURE_PERFORMANCE - ccb->command_ended = microtime_now; - if (dpt->performance.max_submit_count < dpt->submitted_ccbs_count) - dpt->performance.max_submit_count = dpt->submitted_ccbs_count; -#endif - - if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) - wakeup(&dpt); -} - -/** - * Add a request to the TAIL of the Completed ccb queue - */ -static INLINE_Q void -dpt_Qadd_completed(dpt_softc_t * dpt, dpt_ccb_t * ccb) -{ - TAILQ_INSERT_TAIL(&dpt->completed_ccbs, ccb, links); - ++dpt->completed_ccbs_count; - -#ifdef DPT_MEASURE_PERFORMANCE - ccb->command_ended = microtime_now; - if (dpt->performance.max_complete_count < dpt->completed_ccbs_count) - dpt->performance.max_complete_count = - dpt->completed_ccbs_count; -#endif - - if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) - wakeup(&dpt); -} - -/** - * Remove a ccb from the submitted queue - */ -static INLINE_Q void -dpt_Qremove_submitted(dpt_softc_t * dpt, dpt_ccb_t * ccb) -{ -#ifdef DPT_MEASURE_PERFORMANCE - u_int32_t submit_time; - - submit_time = dpt_time_delta(ccb->command_ended, microtime_now); - - if (submit_time != ~0) { - ccb->submitted_time = submit_time; - if (dpt->performance.max_submit_time < submit_time) - dpt->performance.max_submit_time = submit_time; - if (submit_time < dpt->performance.min_submit_time) - dpt->performance.min_submit_time = submit_time; - } else { - ccb->submitted_time = 0; - } - -#endif - - TAILQ_REMOVE(&dpt->submitted_ccbs, ccb, links); - --dpt->submitted_ccbs_count; /* One less submitted ccb in the - * queue */ - - if ((dpt->state & DPT_HA_SHUTDOWN_ACTIVE) - || (dpt->state & DPT_HA_QUIET)) - wakeup(&dpt); -} - -/** - * Handle Shutdowns. - * Gets registered by the dpt_pci.c registar and called AFTER the system did - * all its sync work. - */ - -void -dpt_shutdown(int howto, void *arg_dpt) -{ - dpt_softc_t *ldpt; - u_int8_t channel; - u_int32_t target; - u_int32_t lun; - int waiting; - int submitted; - int completed; - int huh; - int wait_is_over; - int ospl; - dpt_softc_t *dpt; - - dpt = (dpt_softc_t *) arg_dpt; - - printf("dpt%d: Shutting down (mode %d) HBA. Please wait...", - dpt->unit, howto); - wait_is_over = 0; - - ospl = splcam(); - dpt->state |= DPT_HA_SHUTDOWN_ACTIVE; - splx(ospl); - - while ((((waiting = dpt->waiting_ccbs_count) != 0) - || ((submitted = dpt->submitted_ccbs_count) != 0) - || ((completed = dpt->completed_ccbs_count) != 0)) - && (wait_is_over == 0)) { -#ifdef DPT_DEBUG_SHUTDOWN - printf("dpt%d: Waiting for queues w%ds%dc%d to deplete\n", - dpt->unit, dpt->waiting_ccbs_count, - dpt->submitted_ccbs_count, - dpt->completed_ccbs_count); -#endif - huh = tsleep((void *) dpt, PCATCH | PRIBIO, "dptoff", 100 * hz); - switch (huh) { - case 0: - /* Wakeup call received */ - goto checkit; - break; - case EWOULDBLOCK: - /* Timer Expired */ - printf("dpt%d: Shutdown timer expired with queues at " - "w%ds%dc%d\n", - dpt->unit, dpt->waiting_ccbs_count, - dpt->submitted_ccbs_count, - dpt->completed_ccbs_count); - ++wait_is_over; - break; - default: - /* anything else */ - printf("dpt%d: Shutdown UNKNOWN with qeueues at " - "w%ds%dc%d\n", - dpt->unit, dpt->waiting_ccbs_count, - dpt->submitted_ccbs_count, - dpt->completed_ccbs_count); - ++wait_is_over; - break; - } -checkit: - - } - - /** - * What we do for a shutdown, is give the DPT early power loss - * warning - */ -#ifdef DPT_SHUTDOWN_SLEEP - DELAY(DPT_SHUTDOWN_SLEEP * 1000); - - if (dpt->state & DPT_HA_SHUTDOWN_ACTIVE) { - ospl = splcam(); - dpt->state &= ~DPT_HA_SHUTDOWN_ACTIVE; - splx(ospl); - printf("dpt%d: WARNING: After sleeping for about 100 seconds, " - "I am re-enabled\n", - dpt->unit); - printf(" Any further I/O is NOT guaranteed to " - "complete!\n"); - } -#else - (void) dpt_send_immediate(dpt, NULL, EATA_POWER_OFF_WARN, 0, 0); - printf("dpt%d: Controller was warned of shutdown and is now " - "disabled\n", - dpt->unit); -#endif - - return; -} - -/* A primitive subset of isgraph. Used by hex_dump below */ -#define IsGraph(val) ((((val) >= ' ') && ((val) <= '~'))) - -/** - * This function dumps bytes to the screen in hex format. - */ -static void -hex_dump(u_int8_t * data, int length, char *name, int no) -{ - int line, column, ndx; - - printf("Kernel Hex Dump for %s-%d at %p (%d bytes)\n", - name, no, data, length); - - /* Zero out all the counters and repeat for as many bytes as we have */ - for (ndx = 0, column = 0, line = 0; ndx < length; ndx++) { - /* Print relative offset at the beginning of every line */ - if (column == 0) - printf("%04x ", ndx); - - /* Print the byte as two hex digits, followed by a space */ - printf("%02x ", data[ndx]); - - /* Split the row of 16 bytes in half */ - if (++column == 8) { - printf(" "); - } - /* St the end of each row of 16 bytes, put a space ... */ - if (column == 16) { - printf(" "); - - /* ... and then print the ASCII-visible on a line. */ - for (column = 0; column < 16; column++) { - int ascii_pos = ndx - 15 + column; - - /** - * Non-printable and non-ASCII are just a - * dot. ;-( - */ - if (IsGraph(data[ascii_pos])) - printf("%c", data[ascii_pos]); - else - printf("."); - } - - /* Each line ends with a new line */ - printf("\n"); - column = 0; - - /** - * Every 256 bytes (16 lines of 16 bytes each) have - * an empty line, separating them from the next - * ``page''. Yes, I programmed on a Z-80, where a - * page was 256 bytes :-) - */ - if (++line > 15) { - printf("\n"); - line = 0; - } - } - } - - /** - * We are basically done. We do want, however, to handle the ASCII - * translation of fractional lines. - */ - if ((ndx == length) && (column != 0)) { - int modulus = 16 - column, spaces = modulus * 3, - skip; - - /** - * Skip to the right, as many spaces as there are bytes - * ``missing'' ... - */ - for (skip = 0; skip < spaces; skip++) - printf(" "); - - /* ... And the gap separating the hex dump from the ASCII */ - printf(" "); - - /** - * Do not forget the extra space that splits the hex dump - * vertically - */ - if (column < 8) - printf(" "); - - for (column = 0; column < (16 - modulus); column++) { - int ascii_pos = ndx - (16 - modulus) + column; - - if (IsGraph(data[ascii_pos])) - printf("%c", data[ascii_pos]); - else - printf("."); - } - printf("\n"); - } -} - -/** - * and this one presents an integer as ones and zeros - */ -static char i2bin_bitmap[48]; /* Used for binary dump of registers */ - -char * -i2bin(unsigned int no, int length) -{ - int ndx, rind; - - for (ndx = 0, rind = 0; ndx < 32; ndx++, rind++) { - i2bin_bitmap[rind] = (((no << ndx) & 0x80000000) ? '1' : '0'); - - if (((ndx % 4) == 3)) - i2bin_bitmap[++rind] = ' '; - } - - if ((ndx % 4) == 3) - i2bin_bitmap[rind - 1] = '\0'; - else - i2bin_bitmap[rind] = '\0'; - - switch (length) { - case 8: - return (i2bin_bitmap + 30); - break; - case 16: - return (i2bin_bitmap + 20); - break; - case 24: - return (i2bin_bitmap + 10); - break; - case 32: - return (i2bin_bitmap); - default: - return ("i2bin: Invalid length Specs"); - break; - } -} - -/** - * This function translates a SCSI command numeric code to a human readable - * string. - * The string contains the class of devices, scope, description, (length), - * and [SCSI III documentation section]. - */ - -static char * -scsi_cmd_name(u_int8_t cmd) -{ - switch (cmd) { - case 0x40: - return ("Change Definition [7.1]"); - break; - case 0x39: - return ("Compare [7,2]"); - break; - case 0x18: - return ("Copy [7.3]"); - break; - case 0x3a: - return ("Copy and Verify [7.4]"); - break; - case 0x04: - return ("Format Unit [6.1.1]"); - break; - case 0x12: - return ("Inquiry [7.5]"); - break; - case 0x36: - return ("lock/Unlock Cache [6.1.2]"); - break; - case 0x4c: - return ("Log Select [7.6]"); - break; - case 0x4d: - return ("Log Sense [7.7]"); - break; - case 0x15: - return ("Mode select (6) [7.8]"); - break; - case 0x55: - return ("Mode Select (10) [7.9]"); - break; - case 0x1a: - return ("Mode Sense (6) [7.10]"); - break; - case 0x5a: - return ("Mode Sense (10) [7.11]"); - break; - case 0xa7: - return ("Move Medium Attached [SMC]"); - break; - case 0x5e: - return ("Persistent Reserve In [7.12]"); - break; - case 0x5f: - return ("Persistent Reserve Out [7.13]"); - break; - case 0x1e: - return ("Prevent/Allow Medium Removal [7.14]"); - break; - case 0x08: - return ("Read, Receive (6) [6.1.5]"); - break; - case 0x28: - return ("Read (10) [6.1.5]"); - break; - case 0xa8: - return ("Read (12) [6.1.5]"); - break; - case 0x3c: - return ("Read Buffer [7.15]"); - break; - case 0x25: - return ("Read Capacity [6.1.6]"); - break; - case 0x37: - return ("Read Defect Data (10) [6.1.7]"); - break; - case 0xb7: - return ("Read Defect Data (12) [6.2.5]"); - break; - case 0xb4: - return ("Read Element Status Attached [SMC]"); - break; - case 0x3e: - return ("Read Long [6.1.8]"); - break; - case 0x07: - return ("Reassign Blocks [6.1.9]"); - break; - case 0x81: - return ("Rebuild [6.1.10]"); - break; - case 0x1c: - return ("Receive Diagnostics Result [7.16]"); - break; - case 0x82: - return ("Regenerate [6.1.11]"); - break; - case 0x17: - return ("Release(6) [7.17]"); - break; - case 0x57: - return ("Release(10) [7.18]"); - break; - case 0xa0: - return ("Report LUNs [7.19]"); - break; - case 0x03: - return ("Request Sense [7.20]"); - break; - case 0x16: - return ("Resereve (6) [7.21]"); - break; - case 0x56: - return ("Reserve(10) [7.22]"); - break; - case 0x2b: - return ("Reserve(10) [6.1.12]"); - break; - case 0x1d: - return ("Send Disagnostics [7.23]"); - break; - case 0x33: - return ("Set Limit (10) [6.1.13]"); - break; - case 0xb3: - return ("Set Limit (12) [6.2.8]"); - break; - case 0x1b: - return ("Start/Stop Unit [6.1.14]"); - break; - case 0x35: - return ("Synchronize Cache [6.1.15]"); - break; - case 0x00: - return ("Test Unit Ready [7.24]"); - break; - case 0x3d: - return ("Update Block (6.2.9"); - break; - case 0x2f: - return ("Verify (10) [6.1.16, 6.2.10]"); - break; - case 0xaf: - return ("Verify (12) [6.2.11]"); - break; - case 0x0a: - return ("Write, Send (6) [6.1.17, 9.2]"); - break; - case 0x2a: - return ("Write (10) [6.1.18]"); - break; - case 0xaa: - return ("Write (12) [6.2.13]"); - break; - case 0x2e: - return ("Write and Verify (10) [6.1.19, 6.2.14]"); - break; - case 0xae: - return ("Write and Verify (12) [6.1.19, 6.2.15]"); - break; - case 0x03b: - return ("Write Buffer [7.25]"); - break; - case 0x03f: - return ("Write Long [6.1.20]"); - break; - case 0x041: - return ("Write Same [6.1.21]"); - break; - case 0x052: - return ("XD Read [6.1.22]"); - break; - case 0x050: - return ("XD Write [6.1.22]"); - break; - case 0x080: - return ("XD Write Extended [6.1.22]"); - break; - case 0x051: - return ("XO Write [6.1.22]"); - break; - default: - return ("Unknown SCSI Command"); - } -} - -/* End of the DPT driver */ - -/** - * Hello emacs, these are the - * Local Variables: - * c-indent-level: 8 - * c-continued-statement-offset: 8 - * c-continued-brace-offset: 0 - * c-brace-offset: -8 - * c-brace-imaginary-offset: 0 - * c-argdecl-indent: 8 - * c-label-offset: -8 - * c++-hanging-braces: 1 - * c++-access-specifier-offset: -8 - * c++-empty-arglist-indent: 8 - * c++-friend-offset: 0 - * End: - */ - - |