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freebsd-skq/sys/dev/aic7xxx/aic79xx_osm.h
scottl 431996dcfd 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

608 lines
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/*
* FreeBSD platform specific driver option settings, data structures,
* function declarations and includes.
*
* Copyright (c) 1994-2001 Justin T. Gibbs.
* Copyright (c) 2001-2002 Adaptec Inc.
* 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/aic79xx_osm.h#19 $
*
* $FreeBSD$
*/
#ifndef _AIC79XX_FREEBSD_H_
#define _AIC79XX_FREEBSD_H_
#include <opt_aic79xx.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>
#define AHD_PCI_CONFIG 1
#include <machine/bus_memio.h>
#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>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#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>
#include <cam/scsi/scsi_iu.h>
#ifdef CAM_NEW_TRAN_CODE
#define AHD_NEW_TRAN_SETTINGS
#endif /* CAM_NEW_TRAN_CODE */
/****************************** Platform Macros *******************************/
#define SIM_IS_SCSIBUS_B(ahd, sim) \
(0)
#define SIM_CHANNEL(ahd, sim) \
('A')
#define SIM_SCSI_ID(ahd, sim) \
(ahd->our_id)
#define SIM_PATH(ahd, sim) \
(ahd->platform_data->path)
#define BUILD_SCSIID(ahd, sim, target_id, our_id) \
((((target_id) << TID_SHIFT) & TID) | (our_id))
#define SCB_GET_SIM(ahd, scb) \
((ahd)->platform_data->sim)
#ifndef offsetof
#define offsetof(type, member) ((size_t)(&((type *)0)->member))
#endif
/************************* Forward Declarations *******************************/
typedef device_t ahd_dev_softc_t;
typedef union ccb *ahd_io_ctx_t;
/***************************** Bus Space/DMA **********************************/
#define ahd_dma_tag_create(ahd, 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 ahd_dma_tag_destroy(ahd, tag) \
bus_dma_tag_destroy(tag)
#define ahd_dmamem_alloc(ahd, dmat, vaddr, flags, mapp) \
bus_dmamem_alloc(dmat, vaddr, flags, mapp)
#define ahd_dmamem_free(ahd, dmat, vaddr, map) \
bus_dmamem_free(dmat, vaddr, map)
#define ahd_dmamap_create(ahd, tag, flags, mapp) \
bus_dmamap_create(tag, flags, mapp)
#define ahd_dmamap_destroy(ahd, tag, map) \
bus_dmamap_destroy(tag, map)
#define ahd_dmamap_load(ahd, dmat, map, addr, buflen, callback, \
callback_arg, flags) \
bus_dmamap_load(dmat, map, addr, buflen, callback, callback_arg, flags)
#define ahd_dmamap_unload(ahd, tag, map) \
bus_dmamap_unload(tag, map)
/* XXX Need to update Bus DMA for partial map syncs */
#define ahd_dmamap_sync(ahd, 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 AHD_NSEG (roundup(btoc(MAXPHYS) + 1, 16))
/* This driver supports target mode */
#if NOT_YET
#define AHD_TARGET_MODE 1
#endif
/************************** Softc/SCB Platform Data ***************************/
struct ahd_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[2];
int regs_res_id[2];
int irq_res_type;
struct resource *regs[2];
struct resource *irq;
void *ih;
eventhandler_tag eh;
};
struct scb_platform_data {
};
/********************************* Byte Order *********************************/
#if __FreeBSD_version >= 500000
#define ahd_htobe16(x) htobe16(x)
#define ahd_htobe32(x) htobe32(x)
#define ahd_htobe64(x) htobe64(x)
#define ahd_htole16(x) htole16(x)
#define ahd_htole32(x) htole32(x)
#define ahd_htole64(x) htole64(x)
#define ahd_be16toh(x) be16toh(x)
#define ahd_be32toh(x) be32toh(x)
#define ahd_be64toh(x) be64toh(x)
#define ahd_le16toh(x) le16toh(x)
#define ahd_le32toh(x) le32toh(x)
#define ahd_le64toh(x) le64toh(x)
#else
#define ahd_htobe16(x) (x)
#define ahd_htobe32(x) (x)
#define ahd_htobe64(x) (x)
#define ahd_htole16(x) (x)
#define ahd_htole32(x) (x)
#define ahd_htole64(x) (x)
#define ahd_be16toh(x) (x)
#define ahd_be32toh(x) (x)
#define ahd_be64toh(x) (x)
#define ahd_le16toh(x) (x)
#define ahd_le32toh(x) (x)
#define ahd_le64toh(x) (x)
#endif
/************************** Timer DataStructures ******************************/
typedef struct callout ahd_timer_t;
/***************************** Core Includes **********************************/
#if AHD_REG_PRETTY_PRINT
#define AIC_DEBUG_REGISTERS 1
#else
#define AIC_DEBUG_REGISTERS 0
#endif
#include <dev/aic7xxx/aic79xx.h>
/***************************** Timer Facilities *******************************/
timeout_t ahd_timeout;
#if __FreeBSD_version >= 500000
#define ahd_timer_init(timer) callout_init(timer, /*mpsafe*/0)
#else
#define ahd_timer_init callout_init
#endif
#define ahd_timer_stop callout_stop
static __inline void
ahd_timer_reset(ahd_timer_t *timer, u_int usec, ahd_callback_t *func, void *arg)
{
callout_reset(timer, (usec * hz)/1000000, func, arg);
}
static __inline void
ahd_scb_timer_reset(struct scb *scb, u_int usec)
{
untimeout(ahd_timeout, (caddr_t)scb, scb->io_ctx->ccb_h.timeout_ch);
scb->io_ctx->ccb_h.timeout_ch =
timeout(ahd_timeout, scb, (usec * hz)/1000000);
}
/*************************** Device Access ************************************/
#define ahd_inb(ahd, port) \
bus_space_read_1((ahd)->tags[(port) >> 8], \
(ahd)->bshs[(port) >> 8], (port) & 0xFF)
#define ahd_outb(ahd, port, value) \
bus_space_write_1((ahd)->tags[(port) >> 8], \
(ahd)->bshs[(port) >> 8], (port) & 0xFF, value)
#define ahd_inw_atomic(ahd, port) \
ahd_le16toh(bus_space_read_2((ahd)->tags[(port) >> 8], \
(ahd)->bshs[(port) >> 8], (port) & 0xFF))
#define ahd_outw_atomic(ahd, port, value) \
bus_space_write_2((ahd)->tags[(port) >> 8], \
(ahd)->bshs[(port) >> 8], \
(port & 0xFF), ahd_htole16(value))
#define ahd_outsb(ahd, port, valp, count) \
bus_space_write_multi_1((ahd)->tags[(port) >> 8], \
(ahd)->bshs[(port) >> 8], \
(port & 0xFF), valp, count)
#define ahd_insb(ahd, port, valp, count) \
bus_space_read_multi_1((ahd)->tags[(port) >> 8], \
(ahd)->bshs[(port) >> 8], \
(port & 0xFF), valp, count)
static __inline void ahd_flush_device_writes(struct ahd_softc *);
static __inline void
ahd_flush_device_writes(struct ahd_softc *ahd)
{
/* XXX Is this sufficient for all architectures??? */
ahd_inb(ahd, INTSTAT);
}
/**************************** Locking Primitives ******************************/
/* Lock protecting internal data structures */
static __inline void ahd_lockinit(struct ahd_softc *);
static __inline void ahd_lock(struct ahd_softc *, unsigned long *flags);
static __inline void ahd_unlock(struct ahd_softc *, unsigned long *flags);
/* Lock held during command compeletion to the upper layer */
static __inline void ahd_done_lockinit(struct ahd_softc *);
static __inline void ahd_done_lock(struct ahd_softc *, unsigned long *flags);
static __inline void ahd_done_unlock(struct ahd_softc *, unsigned long *flags);
/* Lock held during ahd_list manipulation and ahd softc frees */
static __inline void ahd_list_lockinit(void);
static __inline void ahd_list_lock(unsigned long *flags);
static __inline void ahd_list_unlock(unsigned long *flags);
static __inline void
ahd_lockinit(struct ahd_softc *ahd)
{
}
static __inline void
ahd_lock(struct ahd_softc *ahd, unsigned long *flags)
{
*flags = splcam();
}
static __inline void
ahd_unlock(struct ahd_softc *ahd, unsigned long *flags)
{
splx(*flags);
}
/* Lock held during command compeletion to the upper layer */
static __inline void
ahd_done_lockinit(struct ahd_softc *ahd)
{
}
static __inline void
ahd_done_lock(struct ahd_softc *ahd, unsigned long *flags)
{
}
static __inline void
ahd_done_unlock(struct ahd_softc *ahd, unsigned long *flags)
{
}
/* Lock held during ahd_list manipulation and ahd softc frees */
static __inline void
ahd_list_lockinit()
{
}
static __inline void
ahd_list_lock(unsigned long *flags)
{
}
static __inline void
ahd_list_unlock(unsigned long *flags)
{
}
/****************************** OS Primitives *********************************/
#define ahd_delay DELAY
/************************** Transaction Operations ****************************/
static __inline void ahd_set_transaction_status(struct scb *, uint32_t);
static __inline void ahd_set_scsi_status(struct scb *, uint32_t);
static __inline uint32_t ahd_get_transaction_status(struct scb *);
static __inline uint32_t ahd_get_scsi_status(struct scb *);
static __inline void ahd_set_transaction_tag(struct scb *, int, u_int);
static __inline u_long ahd_get_transfer_length(struct scb *);
static __inline int ahd_get_transfer_dir(struct scb *);
static __inline void ahd_set_residual(struct scb *, u_long);
static __inline void ahd_set_sense_residual(struct scb *, u_long);
static __inline u_long ahd_get_residual(struct scb *);
static __inline int ahd_perform_autosense(struct scb *);
static __inline uint32_t ahd_get_sense_bufsize(struct ahd_softc*, struct scb*);
static __inline void ahd_freeze_simq(struct ahd_softc *);
static __inline void ahd_release_simq(struct ahd_softc *);
static __inline void ahd_freeze_ccb(union ccb *ccb);
static __inline void ahd_freeze_scb(struct scb *scb);
static __inline void ahd_platform_freeze_devq(struct ahd_softc *, struct scb *);
static __inline int ahd_platform_abort_scbs(struct ahd_softc *ahd, int target,
char channel, int lun, u_int tag,
role_t role, uint32_t status);
static __inline
void ahd_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 ahd_set_scsi_status(struct scb *scb, uint32_t status)
{
scb->io_ctx->csio.scsi_status = status;
}
static __inline
uint32_t ahd_get_transaction_status(struct scb *scb)
{
return (scb->io_ctx->ccb_h.status & CAM_STATUS_MASK);
}
static __inline
uint32_t ahd_get_scsi_status(struct scb *scb)
{
return (scb->io_ctx->csio.scsi_status);
}
static __inline
void ahd_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 ahd_get_transfer_length(struct scb *scb)
{
return (scb->io_ctx->csio.dxfer_len);
}
static __inline
int ahd_get_transfer_dir(struct scb *scb)
{
return (scb->io_ctx->ccb_h.flags & CAM_DIR_MASK);
}
static __inline
void ahd_set_residual(struct scb *scb, u_long resid)
{
scb->io_ctx->csio.resid = resid;
}
static __inline
void ahd_set_sense_residual(struct scb *scb, u_long resid)
{
scb->io_ctx->csio.sense_resid = resid;
}
static __inline
u_long ahd_get_residual(struct scb *scb)
{
return (scb->io_ctx->csio.resid);
}
static __inline
int ahd_perform_autosense(struct scb *scb)
{
return (!(scb->io_ctx->ccb_h.flags & CAM_DIS_AUTOSENSE));
}
static __inline uint32_t
ahd_get_sense_bufsize(struct ahd_softc *ahd, struct scb *scb)
{
return (sizeof(struct scsi_sense_data));
}
static __inline void
ahd_freeze_simq(struct ahd_softc *ahd)
{
xpt_freeze_simq(ahd->platform_data->sim, /*count*/1);
}
static __inline void
ahd_release_simq(struct ahd_softc *ahd)
{
xpt_release_simq(ahd->platform_data->sim, /*run queue*/TRUE);
}
static __inline void
ahd_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
ahd_freeze_scb(struct scb *scb)
{
ahd_freeze_ccb(scb->io_ctx);
}
static __inline void
ahd_platform_freeze_devq(struct ahd_softc *ahd, struct scb *scb)
{
/* Nothing to do here for FreeBSD */
}
static __inline int
ahd_platform_abort_scbs(struct ahd_softc *ahd, 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
ahd_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
{
/* What do we do to generically handle driver resource shortages??? */
if ((ahd->flags & AHD_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;
ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
}
scb->io_ctx = NULL;
}
/********************************** PCI ***************************************/
#ifdef AHD_PCI_CONFIG
static __inline uint32_t ahd_pci_read_config(ahd_dev_softc_t pci,
int reg, int width);
static __inline void ahd_pci_write_config(ahd_dev_softc_t pci,
int reg, uint32_t value,
int width);
static __inline int ahd_get_pci_function(ahd_dev_softc_t);
static __inline int ahd_get_pci_slot(ahd_dev_softc_t);
static __inline int ahd_get_pci_bus(ahd_dev_softc_t);
int ahd_pci_map_registers(struct ahd_softc *ahd);
int ahd_pci_map_int(struct ahd_softc *ahd);
static __inline uint32_t
ahd_pci_read_config(ahd_dev_softc_t pci, int reg, int width)
{
return (pci_read_config(pci, reg, width));
}
static __inline void
ahd_pci_write_config(ahd_dev_softc_t pci, int reg, uint32_t value, int width)
{
pci_write_config(pci, reg, value, width);
}
static __inline int
ahd_get_pci_function(ahd_dev_softc_t pci)
{
return (pci_get_function(pci));
}
static __inline int
ahd_get_pci_slot(ahd_dev_softc_t pci)
{
return (pci_get_slot(pci));
}
static __inline int
ahd_get_pci_bus(ahd_dev_softc_t pci)
{
return (pci_get_bus(pci));
}
typedef enum
{
AHD_POWER_STATE_D0,
AHD_POWER_STATE_D1,
AHD_POWER_STATE_D2,
AHD_POWER_STATE_D3
} ahd_power_state;
void ahd_power_state_change(struct ahd_softc *ahd,
ahd_power_state new_state);
#endif
/******************************** VL/EISA *************************************/
int aic7770_map_registers(struct ahd_softc *ahd);
int aic7770_map_int(struct ahd_softc *ahd, int irq);
/********************************* Debug **************************************/
static __inline void ahd_print_path(struct ahd_softc *, struct scb *);
static __inline void ahd_platform_dump_card_state(struct ahd_softc *ahd);
static __inline void
ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
{
xpt_print_path(scb->io_ctx->ccb_h.path);
}
static __inline void
ahd_platform_dump_card_state(struct ahd_softc *ahd)
{
/* Nothing to do here for FreeBSD */
}
/**************************** Transfer Settings *******************************/
void ahd_notify_xfer_settings_change(struct ahd_softc *,
struct ahd_devinfo *);
void ahd_platform_set_tags(struct ahd_softc *, struct ahd_devinfo *,
int /*enable*/);
/************************* Initialization/Teardown ****************************/
int ahd_platform_alloc(struct ahd_softc *ahd, void *platform_arg);
void ahd_platform_free(struct ahd_softc *ahd);
int ahd_map_int(struct ahd_softc *ahd);
int ahd_attach(struct ahd_softc *);
int ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd);
int ahd_detach(device_t);
#define ahd_platform_init(arg)
/****************************** Interrupts ************************************/
void ahd_platform_intr(void *);
static __inline void ahd_platform_flushwork(struct ahd_softc *ahd);
static __inline void
ahd_platform_flushwork(struct ahd_softc *ahd)
{
}
/************************ Misc Function Declarations **************************/
void ahd_done(struct ahd_softc *ahd, struct scb *scb);
void ahd_send_async(struct ahd_softc *, char /*channel*/,
u_int /*target*/, u_int /*lun*/, ac_code, void *arg);
#endif /* _AIC79XX_FREEBSD_H_ */
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