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227f9a1c58
freebsd/sys/dev/aic7xxx/aic7xxx_osm.h
Scott Long 97cae63d7f Last minute fixes to ahc and ahd: 
ahd_pci.c:
	Retrieve the allow_memio hint from the resource manager to
	determine whether or not to try PCI MEMIO.

aic79xx_osm.h:
aic7xxx_osm.h:
	Don't wrongly abuse the callout_reset() interface when trying
	to abuse timeouts generated from the CAM layer.  This fixes the
	console freeze and lost timeout problem that many have reported,
	especially on SMP systems.

aic79xx_pci.c
aic7xxx_pci.c
	Rewrite the MEMIO test routine to prevent certain broken chipsets
	from trying to burst multiple DWORDs to the registers.  Also make
	the routine better detect byte merging by the host bridge and
	deal with it.

aic79xx.reg:
	Correct an incorrect register definition.

Approved by:	re (rwatson, jhb)
2002-12-04 22:51:29 +00:00

589 lines
17 KiB
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/*
* FreeBSD platform specific driver option settings, data structures,
* function declarations and includes.
*
* Copyright (c) 1994-2001 Justin T. Gibbs.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions, and the following disclaimer,
* without modification.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU Public License ("GPL").
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: //depot/aic7xxx/freebsd/dev/aic7xxx/aic7xxx_osm.h#14 $
*
* $FreeBSD$
*/
#ifndef _AIC7XXX_FREEBSD_H_
#define _AIC7XXX_FREEBSD_H_
#include <opt_aic7xxx.h> /* for config options */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h> /* For device_t */
#if __FreeBSD_version >= 500000
#include <sys/endian.h>
#endif
#include <sys/eventhandler.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/queue.h>
#if __FreeBSD_version < 500000
#include <pci.h>
#else
#define NPCI 1
#endif
#if NPCI > 0
#define AHC_PCI_CONFIG 1
#include <machine/bus_memio.h>
#endif
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/endian.h>
#include <machine/clock.h>
#include <machine/resource.h>
#include <sys/rman.h>
#if NPCI > 0
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#endif
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_debug.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/scsi/scsi_all.h>
#include <cam/scsi/scsi_message.h>
#ifdef CAM_NEW_TRAN_CODE
#define AHC_NEW_TRAN_SETTINGS
#endif /* CAM_NEW_TRAN_CODE */
/*************************** Attachment Bookkeeping ***************************/
extern devclass_t ahc_devclass;
/****************************** Platform Macros *******************************/
#define SIM_IS_SCSIBUS_B(ahc, sim) \
((sim) == ahc->platform_data->sim_b)
#define SIM_CHANNEL(ahc, sim) \
(((sim) == ahc->platform_data->sim_b) ? 'B' : 'A')
#define SIM_SCSI_ID(ahc, sim) \
(((sim) == ahc->platform_data->sim_b) ? ahc->our_id_b : ahc->our_id)
#define SIM_PATH(ahc, sim) \
(((sim) == ahc->platform_data->sim_b) ? ahc->platform_data->path_b \
: ahc->platform_data->path)
#define BUILD_SCSIID(ahc, sim, target_id, our_id) \
((((target_id) << TID_SHIFT) & TID) | (our_id) \
| (SIM_IS_SCSIBUS_B(ahc, sim) ? TWIN_CHNLB : 0))
#define SCB_GET_SIM(ahc, scb) \
(SCB_GET_CHANNEL(ahc, scb) == 'A' ? (ahc)->platform_data->sim \
: (ahc)->platform_data->sim_b)
#ifndef offsetof
#define offsetof(type, member) ((size_t)(&((type *)0)->member))
#endif
/************************* Forward Declarations *******************************/
typedef device_t ahc_dev_softc_t;
typedef union ccb *ahc_io_ctx_t;
/***************************** Bus Space/DMA **********************************/
#define ahc_dma_tag_create(ahc, parent_tag, alignment, boundary, \
lowaddr, highaddr, filter, filterarg, \
maxsize, nsegments, maxsegsz, flags, \
dma_tagp) \
bus_dma_tag_create(parent_tag, alignment, boundary, \
lowaddr, highaddr, filter, filterarg, \
maxsize, nsegments, maxsegsz, flags, \
dma_tagp)
#define ahc_dma_tag_destroy(ahc, tag) \
bus_dma_tag_destroy(tag)
#define ahc_dmamem_alloc(ahc, dmat, vaddr, flags, mapp) \
bus_dmamem_alloc(dmat, vaddr, flags, mapp)
#define ahc_dmamem_free(ahc, dmat, vaddr, map) \
bus_dmamem_free(dmat, vaddr, map)
#define ahc_dmamap_create(ahc, tag, flags, mapp) \
bus_dmamap_create(tag, flags, mapp)
#define ahc_dmamap_destroy(ahc, tag, map) \
bus_dmamap_destroy(tag, map)
#define ahc_dmamap_load(ahc, dmat, map, addr, buflen, callback, \
callback_arg, flags) \
bus_dmamap_load(dmat, map, addr, buflen, callback, callback_arg, flags)
#define ahc_dmamap_unload(ahc, tag, map) \
bus_dmamap_unload(tag, map)
/* XXX Need to update Bus DMA for partial map syncs */
#define ahc_dmamap_sync(ahc, dma_tag, dmamap, offset, len, op) \
bus_dmamap_sync(dma_tag, dmamap, op)
/************************ Tunable Driver Parameters **************************/
/*
* The number of dma segments supported. The sequencer can handle any number
* of physically contiguous S/G entrys. To reduce the driver's memory
* consumption, we limit the number supported to be sufficient to handle
* the largest mapping supported by the kernel, MAXPHYS. Assuming the
* transfer is as fragmented as possible and unaligned, this turns out to
* be the number of paged sized transfers in MAXPHYS plus an extra element
* to handle any unaligned residual. The sequencer fetches SG elements
* in cacheline sized chucks, so make the number per-transaction an even
* multiple of 16 which should align us on even the largest of cacheline
* boundaries.
*/
#define AHC_NSEG (roundup(btoc(MAXPHYS) + 1, 16))
/* This driver supports target mode */
#define AHC_TARGET_MODE 1
/************************** Softc/SCB Platform Data ***************************/
struct ahc_platform_data {
/*
* Hooks into the XPT.
*/
struct cam_sim *sim;
struct cam_sim *sim_b;
struct cam_path *path;
struct cam_path *path_b;
int regs_res_type;
int regs_res_id;
int irq_res_type;
struct resource *regs;
struct resource *irq;
void *ih;
eventhandler_tag eh;
};
struct scb_platform_data {
};
/********************************* Byte Order *********************************/
#if __FreeBSD_version >= 500000
#define ahc_htobe16(x) htobe16(x)
#define ahc_htobe32(x) htobe32(x)
#define ahc_htobe64(x) htobe64(x)
#define ahc_htole16(x) htole16(x)
#define ahc_htole32(x) htole32(x)
#define ahc_htole64(x) htole64(x)
#define ahc_be16toh(x) be16toh(x)
#define ahc_be32toh(x) be32toh(x)
#define ahc_be64toh(x) be64toh(x)
#define ahc_le16toh(x) le16toh(x)
#define ahc_le32toh(x) le32toh(x)
#define ahc_le64toh(x) le64toh(x)
#else
#define ahc_htobe16(x) (x)
#define ahc_htobe32(x) (x)
#define ahc_htobe64(x) (x)
#define ahc_htole16(x) (x)
#define ahc_htole32(x) (x)
#define ahc_htole64(x) (x)
#define ahc_be16toh(x) (x)
#define ahc_be32toh(x) (x)
#define ahc_be64toh(x) (x)
#define ahc_le16toh(x) (x)
#define ahc_le32toh(x) (x)
#define ahc_le64toh(x) (x)
#endif
/************************** Timer DataStructures ******************************/
typedef struct callout ahc_timer_t;
/***************************** Core Includes **********************************/
#if AHC_REG_PRETTY_PRINT
#define AIC_DEBUG_REGISTERS 1
#else
#define AIC_DEBUG_REGISTERS 0
#endif
#include <dev/aic7xxx/aic7xxx.h>
/***************************** Timer Facilities *******************************/
timeout_t ahc_timeout;
#if __FreeBSD_version >= 500000
#define ahc_timer_init(timer) callout_init(timer, /*mpsafe*/0)
#else
#define ahc_timer_init callout_init
#endif
#define ahc_timer_stop callout_stop
static __inline void
ahc_timer_reset(ahc_timer_t *timer, u_int usec, ahc_callback_t *func, void *arg)
{
callout_reset(timer, (usec * hz)/1000000, func, arg);
}
static __inline void
ahc_scb_timer_reset(struct scb *scb, u_int usec)
{
untimeout(ahc_timeout, (caddr_t)scb, scb->io_ctx->ccb_h.timeout_ch);
scb->io_ctx->ccb_h.timeout_ch =
timeout(ahc_timeout, scb, (usec * hz)/1000000);
}
/*************************** Device Access ************************************/
#define ahc_inb(ahc, port) \
bus_space_read_1((ahc)->tag, (ahc)->bsh, port)
#define ahc_outb(ahc, port, value) \
bus_space_write_1((ahc)->tag, (ahc)->bsh, port, value)
#define ahc_outsb(ahc, port, valp, count) \
bus_space_write_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
#define ahc_insb(ahc, port, valp, count) \
bus_space_read_multi_1((ahc)->tag, (ahc)->bsh, port, valp, count)
static __inline void ahc_flush_device_writes(struct ahc_softc *);
static __inline void
ahc_flush_device_writes(struct ahc_softc *ahc)
{
/* XXX Is this sufficient for all architectures??? */
ahc_inb(ahc, INTSTAT);
}
/**************************** Locking Primitives ******************************/
/* Lock protecting internal data structures */
static __inline void ahc_lockinit(struct ahc_softc *);
static __inline void ahc_lock(struct ahc_softc *, unsigned long *flags);
static __inline void ahc_unlock(struct ahc_softc *, unsigned long *flags);
/* Lock held during command compeletion to the upper layer */
static __inline void ahc_done_lockinit(struct ahc_softc *);
static __inline void ahc_done_lock(struct ahc_softc *, unsigned long *flags);
static __inline void ahc_done_unlock(struct ahc_softc *, unsigned long *flags);
/* Lock held during ahc_list manipulation and ahc softc frees */
static __inline void ahc_list_lockinit(void);
static __inline void ahc_list_lock(unsigned long *flags);
static __inline void ahc_list_unlock(unsigned long *flags);
static __inline void
ahc_lockinit(struct ahc_softc *ahc)
{
}
static __inline void
ahc_lock(struct ahc_softc *ahc, unsigned long *flags)
{
*flags = splcam();
}
static __inline void
ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
splx(*flags);
}
/* Lock held during command compeletion to the upper layer */
static __inline void
ahc_done_lockinit(struct ahc_softc *ahc)
{
}
static __inline void
ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
{
}
static __inline void
ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
}
/* Lock held during ahc_list manipulation and ahc softc frees */
static __inline void
ahc_list_lockinit()
{
}
static __inline void
ahc_list_lock(unsigned long *flags)
{
}
static __inline void
ahc_list_unlock(unsigned long *flags)
{
}
/****************************** OS Primitives *********************************/
#define ahc_delay DELAY
/************************** Transaction Operations ****************************/
static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
static __inline uint32_t ahc_get_transaction_status(struct scb *);
static __inline uint32_t ahc_get_scsi_status(struct scb *);
static __inline void ahc_set_transaction_tag(struct scb *, int, u_int);
static __inline u_long ahc_get_transfer_length(struct scb *);
static __inline int ahc_get_transfer_dir(struct scb *);
static __inline void ahc_set_residual(struct scb *, u_long);
static __inline void ahc_set_sense_residual(struct scb *, u_long);
static __inline u_long ahc_get_residual(struct scb *);
static __inline int ahc_perform_autosense(struct scb *);
static __inline uint32_t ahc_get_sense_bufsize(struct ahc_softc*, struct scb*);
static __inline void ahc_freeze_ccb(union ccb *ccb);
static __inline void ahc_freeze_scb(struct scb *scb);
static __inline void ahc_platform_freeze_devq(struct ahc_softc *, struct scb *);
static __inline int ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
char channel, int lun, u_int tag,
role_t role, uint32_t status);
static __inline
void ahc_set_transaction_status(struct scb *scb, uint32_t status)
{
scb->io_ctx->ccb_h.status &= ~CAM_STATUS_MASK;
scb->io_ctx->ccb_h.status |= status;
}
static __inline
void ahc_set_scsi_status(struct scb *scb, uint32_t status)
{
scb->io_ctx->csio.scsi_status = status;
}
static __inline
uint32_t ahc_get_transaction_status(struct scb *scb)
{
return (scb->io_ctx->ccb_h.status & CAM_STATUS_MASK);
}
static __inline
uint32_t ahc_get_scsi_status(struct scb *scb)
{
return (scb->io_ctx->csio.scsi_status);
}
static __inline
void ahc_set_transaction_tag(struct scb *scb, int enabled, u_int type)
{
scb->io_ctx->csio.tag_action = type;
if (enabled)
scb->io_ctx->ccb_h.flags |= CAM_TAG_ACTION_VALID;
else
scb->io_ctx->ccb_h.flags &= ~CAM_TAG_ACTION_VALID;
}
static __inline
u_long ahc_get_transfer_length(struct scb *scb)
{
return (scb->io_ctx->csio.dxfer_len);
}
static __inline
int ahc_get_transfer_dir(struct scb *scb)
{
return (scb->io_ctx->ccb_h.flags & CAM_DIR_MASK);
}
static __inline
void ahc_set_residual(struct scb *scb, u_long resid)
{
scb->io_ctx->csio.resid = resid;
}
static __inline
void ahc_set_sense_residual(struct scb *scb, u_long resid)
{
scb->io_ctx->csio.sense_resid = resid;
}
static __inline
u_long ahc_get_residual(struct scb *scb)
{
return (scb->io_ctx->csio.resid);
}
static __inline
int ahc_perform_autosense(struct scb *scb)
{
return (!(scb->io_ctx->ccb_h.flags & CAM_DIS_AUTOSENSE));
}
static __inline uint32_t
ahc_get_sense_bufsize(struct ahc_softc *ahc, struct scb *scb)
{
return (sizeof(struct scsi_sense_data));
}
static __inline void
ahc_freeze_ccb(union ccb *ccb)
{
if ((ccb->ccb_h.status & CAM_DEV_QFRZN) == 0) {
ccb->ccb_h.status |= CAM_DEV_QFRZN;
xpt_freeze_devq(ccb->ccb_h.path, /*count*/1);
}
}
static __inline void
ahc_freeze_scb(struct scb *scb)
{
ahc_freeze_ccb(scb->io_ctx);
}
static __inline void
ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb)
{
/* Nothing to do here for FreeBSD */
}
static __inline int
ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
char channel, int lun, u_int tag,
role_t role, uint32_t status)
{
/* Nothing to do here for FreeBSD */
return (0);
}
static __inline void
ahc_platform_scb_free(struct ahc_softc *ahc, struct scb *scb)
{
/* What do we do to generically handle driver resource shortages??? */
if ((ahc->flags & AHC_RESOURCE_SHORTAGE) != 0
&& scb->io_ctx != NULL
&& (scb->io_ctx->ccb_h.status & CAM_RELEASE_SIMQ) == 0) {
scb->io_ctx->ccb_h.status |= CAM_RELEASE_SIMQ;
ahc->flags &= ~AHC_RESOURCE_SHORTAGE;
}
scb->io_ctx = NULL;
}
/********************************** PCI ***************************************/
#ifdef AHC_PCI_CONFIG
static __inline uint32_t ahc_pci_read_config(ahc_dev_softc_t pci,
int reg, int width);
static __inline void ahc_pci_write_config(ahc_dev_softc_t pci,
int reg, uint32_t value,
int width);
static __inline int ahc_get_pci_function(ahc_dev_softc_t);
static __inline int ahc_get_pci_slot(ahc_dev_softc_t);
static __inline int ahc_get_pci_bus(ahc_dev_softc_t);
int ahc_pci_map_registers(struct ahc_softc *ahc);
int ahc_pci_map_int(struct ahc_softc *ahc);
static __inline uint32_t
ahc_pci_read_config(ahc_dev_softc_t pci, int reg, int width)
{
return (pci_read_config(pci, reg, width));
}
static __inline void
ahc_pci_write_config(ahc_dev_softc_t pci, int reg, uint32_t value, int width)
{
pci_write_config(pci, reg, value, width);
}
static __inline int
ahc_get_pci_function(ahc_dev_softc_t pci)
{
return (pci_get_function(pci));
}
static __inline int
ahc_get_pci_slot(ahc_dev_softc_t pci)
{
return (pci_get_slot(pci));
}
static __inline int
ahc_get_pci_bus(ahc_dev_softc_t pci)
{
return (pci_get_bus(pci));
}
typedef enum
{
AHC_POWER_STATE_D0,
AHC_POWER_STATE_D1,
AHC_POWER_STATE_D2,
AHC_POWER_STATE_D3
} ahc_power_state;
void ahc_power_state_change(struct ahc_softc *ahc,
ahc_power_state new_state);
#endif
/******************************** VL/EISA *************************************/
int aic7770_map_registers(struct ahc_softc *ahc, u_int port);
int aic7770_map_int(struct ahc_softc *ahc, int irq);
/********************************* Debug **************************************/
static __inline void ahc_print_path(struct ahc_softc *, struct scb *);
static __inline void ahc_platform_dump_card_state(struct ahc_softc *ahc);
static __inline void
ahc_print_path(struct ahc_softc *ahc, struct scb *scb)
{
xpt_print_path(scb->io_ctx->ccb_h.path);
}
static __inline void
ahc_platform_dump_card_state(struct ahc_softc *ahc)
{
/* Nothing to do here for FreeBSD */
}
/**************************** Transfer Settings *******************************/
void ahc_notify_xfer_settings_change(struct ahc_softc *,
struct ahc_devinfo *);
void ahc_platform_set_tags(struct ahc_softc *, struct ahc_devinfo *,
int /*enable*/);
/************************* Initialization/Teardown ****************************/
int ahc_platform_alloc(struct ahc_softc *ahc, void *platform_arg);
void ahc_platform_free(struct ahc_softc *ahc);
int ahc_map_int(struct ahc_softc *ahc);
int ahc_attach(struct ahc_softc *);
int ahc_softc_comp(struct ahc_softc *lahc, struct ahc_softc *rahc);
int ahc_detach(device_t);
/****************************** Interrupts ************************************/
void ahc_platform_intr(void *);
static __inline void ahc_platform_flushwork(struct ahc_softc *ahc);
static __inline void
ahc_platform_flushwork(struct ahc_softc *ahc)
{
}
/************************ Misc Function Declarations **************************/
void ahc_done(struct ahc_softc *ahc, struct scb *scb);
void ahc_send_async(struct ahc_softc *, char /*channel*/,
u_int /*target*/, u_int /*lun*/, ac_code, void *arg);
#endif /* _AIC7XXX_FREEBSD_H_ */
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