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Automatic merge of rsync://www.parisc-linux.org/~jejb/git/scsi-for-linus-2.6.git

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This commit is contained in:
Linus Torvalds 2005-05-20 17:21:03 -07:00
commit 9636273dae
8 changed files with 548 additions and 1328 deletions
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52
drivers/scsi/aic7xxx/aic7770_osm.c
View File

@ -41,7 +41,6 @@
#include "aic7xxx_osm.h"
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
#include <linux/device.h>
#include <linux/eisa.h>
@ -62,13 +61,6 @@ static struct eisa_driver aic7770_driver = {
};
typedef struct device *aic7770_dev_t;
#else
#define MINSLOT 1
#define NUMSLOTS 16
#define IDOFFSET 0x80
typedef void *aic7770_dev_t;
#endif
static int aic7770_linux_config(struct aic7770_identity *entry,
aic7770_dev_t dev, u_int eisaBase);
@ -76,7 +68,6 @@ static int aic7770_linux_config(struct aic7770_identity *entry,
int
ahc_linux_eisa_init(void)
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
struct eisa_device_id *eid;
struct aic7770_identity *id;
int i;
@ -110,44 +101,6 @@ ahc_linux_eisa_init(void)
eid->sig[0] = 0;
return eisa_driver_register(&aic7770_driver);
#else /* LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) */
struct aic7770_identity *entry;
u_int slot;
u_int eisaBase;
u_int i;
int ret = -ENODEV;
if (aic7xxx_probe_eisa_vl == 0)
return ret;
eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
uint32_t eisa_id;
size_t id_size;
if (request_region(eisaBase, AHC_EISA_IOSIZE, "aic7xxx") == 0)
continue;
eisa_id = 0;
id_size = sizeof(eisa_id);
for (i = 0; i < 4; i++) {
/* VLcards require priming*/
outb(0x80 + i, eisaBase + IDOFFSET);
eisa_id |= inb(eisaBase + IDOFFSET + i)
<< ((id_size-i-1) * 8);
}
release_region(eisaBase, AHC_EISA_IOSIZE);
if (eisa_id & 0x80000000)
continue; /* no EISA card in slot */
entry = aic7770_find_device(eisa_id);
if (entry != NULL) {
aic7770_linux_config(entry, NULL, eisaBase);
ret = 0;
}
}
return ret;
#endif
}
void
@ -187,11 +140,10 @@ aic7770_linux_config(struct aic7770_identity *entry, aic7770_dev_t dev,
ahc_free(ahc);
return (error);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
dev->driver_data = (void *)ahc;
if (aic7xxx_detect_complete)
error = ahc_linux_register_host(ahc, &aic7xxx_driver_template);
#endif
return (error);
}
@ -225,7 +177,6 @@ aic7770_map_int(struct ahc_softc *ahc, u_int irq)
return (-error);
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
static int
aic7770_eisa_dev_probe(struct device *dev)
{
@ -261,4 +212,3 @@ aic7770_eisa_dev_remove(struct device *dev)
return (0);
}
#endif

1436
drivers/scsi/aic7xxx/aic7xxx_osm.c
View File

File diff suppressed because it is too large Load Diff

169
drivers/scsi/aic7xxx/aic7xxx_osm.h
View File

@ -59,6 +59,7 @@
#ifndef _AIC7XXX_LINUX_H_
#define _AIC7XXX_LINUX_H_
#include <linux/config.h>
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
@ -66,18 +67,21 @@
#include <linux/pci.h>
#include <linux/smp_lock.h>
#include <linux/version.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include <linux/interrupt.h> /* For tasklet support. */
#include <linux/config.h>
#include <linux/slab.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_eh.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_tcq.h>
/* Core SCSI definitions */
#define AIC_LIB_PREFIX ahc
#include "scsi.h"
#include <scsi/scsi_host.h>
/* Name space conflict with BSD queue macros */
#ifdef LIST_HEAD
@ -106,7 +110,7 @@
/************************* Forward Declarations *******************************/
struct ahc_softc;
typedef struct pci_dev *ahc_dev_softc_t;
typedef Scsi_Cmnd *ahc_io_ctx_t;
typedef struct scsi_cmnd *ahc_io_ctx_t;
/******************************* Byte Order ***********************************/
#define ahc_htobe16(x) cpu_to_be16(x)
@ -144,7 +148,7 @@ typedef Scsi_Cmnd *ahc_io_ctx_t;
extern u_int aic7xxx_no_probe;
extern u_int aic7xxx_allow_memio;
extern int aic7xxx_detect_complete;
extern Scsi_Host_Template aic7xxx_driver_template;
extern struct scsi_host_template aic7xxx_driver_template;
/***************************** Bus Space/DMA **********************************/
@ -174,11 +178,7 @@ struct ahc_linux_dma_tag
};
typedef struct ahc_linux_dma_tag* bus_dma_tag_t;
struct ahc_linux_dmamap
{
dma_addr_t bus_addr;
};
typedef struct ahc_linux_dmamap* bus_dmamap_t;
typedef dma_addr_t bus_dmamap_t;
typedef int bus_dma_filter_t(void*, dma_addr_t);
typedef void bus_dmamap_callback_t(void *, bus_dma_segment_t *, int, int);
@ -281,12 +281,6 @@ ahc_scb_timer_reset(struct scb *scb, u_int usec)
/***************************** SMP support ************************************/
#include <linux/spinlock.h>
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0) || defined(SCSI_HAS_HOST_LOCK))
#define AHC_SCSI_HAS_HOST_LOCK 1
#else
#define AHC_SCSI_HAS_HOST_LOCK 0
#endif
#define AIC7XXX_DRIVER_VERSION "6.2.36"
/**************************** Front End Queues ********************************/
@ -328,20 +322,15 @@ struct ahc_cmd {
*/
TAILQ_HEAD(ahc_busyq, ahc_cmd);
typedef enum {
AHC_DEV_UNCONFIGURED = 0x01,
AHC_DEV_FREEZE_TIL_EMPTY = 0x02, /* Freeze queue until active == 0 */
AHC_DEV_TIMER_ACTIVE = 0x04, /* Our timer is active */
AHC_DEV_ON_RUN_LIST = 0x08, /* Queued to be run later */
AHC_DEV_Q_BASIC = 0x10, /* Allow basic device queuing */
AHC_DEV_Q_TAGGED = 0x20, /* Allow full SCSI2 command queueing */
AHC_DEV_PERIODIC_OTAG = 0x40, /* Send OTAG to prevent starvation */
AHC_DEV_SLAVE_CONFIGURED = 0x80 /* slave_configure() has been called */
} ahc_linux_dev_flags;
struct ahc_linux_target;
struct ahc_linux_device {
TAILQ_ENTRY(ahc_linux_device) links;
struct ahc_busyq busyq;
/*
* The number of transactions currently
@ -381,11 +370,6 @@ struct ahc_linux_device {
ahc_linux_dev_flags flags;
/*
* Per device timer.
*/
struct timer_list timer;
/*
* The high limit for the tags variable.
*/
@ -419,7 +403,7 @@ struct ahc_linux_device {
#define AHC_OTAG_THRESH 500
int lun;
Scsi_Device *scsi_device;
struct scsi_device *scsi_device;
struct ahc_linux_target *target;
};
@ -439,32 +423,16 @@ struct ahc_linux_target {
* manner and are allocated below 4GB, the number of S/G segments is
* unrestricted.
*/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
/*
* We dynamically adjust the number of segments in pre-2.5 kernels to
* avoid fragmentation issues in the SCSI mid-layer's private memory
* allocator. See aic7xxx_osm.c ahc_linux_size_nseg() for details.
*/
extern u_int ahc_linux_nseg;
#define AHC_NSEG ahc_linux_nseg
#define AHC_LINUX_MIN_NSEG 64
#else
#define AHC_NSEG 128
#endif
/*
* Per-SCB OSM storage.
*/
typedef enum {
AHC_UP_EH_SEMAPHORE = 0x1
} ahc_linux_scb_flags;
struct scb_platform_data {
struct ahc_linux_device *dev;
dma_addr_t buf_busaddr;
uint32_t xfer_len;
uint32_t sense_resid; /* Auto-Sense residual */
ahc_linux_scb_flags flags;
};
/*
@ -473,39 +441,24 @@ struct scb_platform_data {
* alignment restrictions of the various platforms supported by
* this driver.
*/
typedef enum {
AHC_RUN_CMPLT_Q_TIMER = 0x10
} ahc_linux_softc_flags;
TAILQ_HEAD(ahc_completeq, ahc_cmd);
struct ahc_platform_data {
/*
* Fields accessed from interrupt context.
*/
struct ahc_linux_target *targets[AHC_NUM_TARGETS];
TAILQ_HEAD(, ahc_linux_device) device_runq;
struct ahc_completeq completeq;
spinlock_t spin_lock;
struct tasklet_struct runq_tasklet;
u_int qfrozen;
pid_t dv_pid;
struct timer_list completeq_timer;
struct timer_list reset_timer;
struct semaphore eh_sem;
struct semaphore dv_sem;
struct semaphore dv_cmd_sem; /* XXX This needs to be in
* the target struct
*/
struct scsi_device *dv_scsi_dev;
struct Scsi_Host *host; /* pointer to scsi host */
#define AHC_LINUX_NOIRQ ((uint32_t)~0)
uint32_t irq; /* IRQ for this adapter */
uint32_t bios_address;
uint32_t mem_busaddr; /* Mem Base Addr */
uint64_t hw_dma_mask;
ahc_linux_softc_flags flags;
#define AHC_UP_EH_SEMAPHORE 0x1
uint32_t flags;
};
/************************** OS Utility Wrappers *******************************/
@ -594,7 +547,7 @@ ahc_insb(struct ahc_softc * ahc, long port, uint8_t *array, int count)
/**************************** Initialization **********************************/
int ahc_linux_register_host(struct ahc_softc *,
Scsi_Host_Template *);
struct scsi_host_template *);
uint64_t ahc_linux_get_memsize(void);
@ -615,17 +568,6 @@ 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 acquisition and release of the above lock in midlayer entry points. */
static __inline void ahc_midlayer_entrypoint_lock(struct ahc_softc *,
unsigned long *flags);
static __inline void ahc_midlayer_entrypoint_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 */
extern spinlock_t ahc_list_spinlock;
static __inline void ahc_list_lockinit(void);
@ -650,57 +592,6 @@ ahc_unlock(struct ahc_softc *ahc, unsigned long *flags)
spin_unlock_irqrestore(&ahc->platform_data->spin_lock, *flags);
}
static __inline void
ahc_midlayer_entrypoint_lock(struct ahc_softc *ahc, unsigned long *flags)
{
/*
* In 2.5.X and some 2.4.X versions, the midlayer takes our
* lock just before calling us, so we avoid locking again.
* For other kernel versions, the io_request_lock is taken
* just before our entry point is called. In this case, we
* trade the io_request_lock for our per-softc lock.
*/
#if AHC_SCSI_HAS_HOST_LOCK == 0
spin_unlock(&io_request_lock);
spin_lock(&ahc->platform_data->spin_lock);
#endif
}
static __inline void
ahc_midlayer_entrypoint_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
#if AHC_SCSI_HAS_HOST_LOCK == 0
spin_unlock(&ahc->platform_data->spin_lock);
spin_lock(&io_request_lock);
#endif
}
static __inline void
ahc_done_lockinit(struct ahc_softc *ahc)
{
/*
* In 2.5.X, our own lock is held during completions.
* In previous versions, the io_request_lock is used.
* In either case, we can't initialize this lock again.
*/
}
static __inline void
ahc_done_lock(struct ahc_softc *ahc, unsigned long *flags)
{
#if AHC_SCSI_HAS_HOST_LOCK == 0
spin_lock_irqsave(&io_request_lock, *flags);
#endif
}
static __inline void
ahc_done_unlock(struct ahc_softc *ahc, unsigned long *flags)
{
#if AHC_SCSI_HAS_HOST_LOCK == 0
spin_unlock_irqrestore(&io_request_lock, *flags);
#endif
}
static __inline void
ahc_list_lockinit(void)
{
@ -767,12 +658,6 @@ typedef enum
} ahc_power_state;
/**************************** VL/EISA Routines ********************************/
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0) \
&& (defined(__i386__) || defined(__alpha__)) \
&& (!defined(CONFIG_EISA)))
#define CONFIG_EISA
#endif
#ifdef CONFIG_EISA
extern uint32_t aic7xxx_probe_eisa_vl;
int ahc_linux_eisa_init(void);
@ -888,22 +773,18 @@ ahc_flush_device_writes(struct ahc_softc *ahc)
}
/**************************** Proc FS Support *********************************/
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
int ahc_linux_proc_info(char *, char **, off_t, int, int, int);
#else
int ahc_linux_proc_info(struct Scsi_Host *, char *, char **,
off_t, int, int);
#endif
/*************************** Domain Validation ********************************/
/*********************** Transaction Access Wrappers *************************/
static __inline void ahc_cmd_set_transaction_status(Scsi_Cmnd *, uint32_t);
static __inline void ahc_cmd_set_transaction_status(struct scsi_cmnd *, uint32_t);
static __inline void ahc_set_transaction_status(struct scb *, uint32_t);
static __inline void ahc_cmd_set_scsi_status(Scsi_Cmnd *, uint32_t);
static __inline void ahc_cmd_set_scsi_status(struct scsi_cmnd *, uint32_t);
static __inline void ahc_set_scsi_status(struct scb *, uint32_t);
static __inline uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd);
static __inline uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd);
static __inline uint32_t ahc_get_transaction_status(struct scb *);
static __inline uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd);
static __inline uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd);
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 *);
@ -922,7 +803,7 @@ static __inline void ahc_platform_scb_free(struct ahc_softc *ahc,
static __inline void ahc_freeze_scb(struct scb *scb);
static __inline
void ahc_cmd_set_transaction_status(Scsi_Cmnd *cmd, uint32_t status)
void ahc_cmd_set_transaction_status(struct scsi_cmnd *cmd, uint32_t status)
{
cmd->result &= ~(CAM_STATUS_MASK << 16);
cmd->result |= status << 16;
@ -935,7 +816,7 @@ void ahc_set_transaction_status(struct scb *scb, uint32_t status)
}
static __inline
void ahc_cmd_set_scsi_status(Scsi_Cmnd *cmd, uint32_t status)
void ahc_cmd_set_scsi_status(struct scsi_cmnd *cmd, uint32_t status)
{
cmd->result &= ~0xFFFF;
cmd->result |= status;
@ -948,7 +829,7 @@ void ahc_set_scsi_status(struct scb *scb, uint32_t status)
}
static __inline
uint32_t ahc_cmd_get_transaction_status(Scsi_Cmnd *cmd)
uint32_t ahc_cmd_get_transaction_status(struct scsi_cmnd *cmd)
{
return ((cmd->result >> 16) & CAM_STATUS_MASK);
}
@ -960,7 +841,7 @@ uint32_t ahc_get_transaction_status(struct scb *scb)
}
static __inline
uint32_t ahc_cmd_get_scsi_status(Scsi_Cmnd *cmd)
uint32_t ahc_cmd_get_scsi_status(struct scsi_cmnd *cmd)
{
return (cmd->result & 0xFFFF);
}

11
drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
View File

@ -221,13 +221,11 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
&& ahc_linux_get_memsize() > 0x80000000
&& pci_set_dma_mask(pdev, mask_39bit) == 0) {
ahc->flags |= AHC_39BIT_ADDRESSING;
ahc->platform_data->hw_dma_mask = mask_39bit;
} else {
if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "aic7xxx: No suitable DMA available.\n");
return (-ENODEV);
}
ahc->platform_data->hw_dma_mask = DMA_32BIT_MASK;
}
ahc->dev_softc = pci;
error = ahc_pci_config(ahc, entry);
@ -236,15 +234,8 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return (-error);
}
pci_set_drvdata(pdev, ahc);
if (aic7xxx_detect_complete) {
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)
if (aic7xxx_detect_complete)
ahc_linux_register_host(ahc, &aic7xxx_driver_template);
#else
printf("aic7xxx: ignoring PCI device found after "
"initialization\n");
return (-ENODEV);
#endif
}
return (0);
}

13
drivers/scsi/aic7xxx/aic7xxx_proc.c
View File

@ -289,13 +289,8 @@ done:
* Return information to handle /proc support for the driver.
*/
int
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
ahc_linux_proc_info(char *buffer, char **start, off_t offset,
int length, int hostno, int inout)
#else
ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
off_t offset, int length, int inout)
#endif
{
struct ahc_softc *ahc;
struct info_str info;
@ -307,15 +302,7 @@ ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
retval = -EINVAL;
ahc_list_lock(&s);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0)
TAILQ_FOREACH(ahc, &ahc_tailq, links) {
if (ahc->platform_data->host->host_no == hostno)
break;
}
#else
ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
#endif
if (ahc == NULL)
goto done;

1
drivers/scsi/aic7xxx/aiclib.c
View File

@ -35,7 +35,6 @@
#include <linux/version.h>
/* Core SCSI definitions */
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "aiclib.h"
#include "cam.h"

188
drivers/scsi/scsi_transport_spi.c
View File

@ -35,7 +35,7 @@
#define SPI_PRINTK(x, l, f, a...) dev_printk(l, &(x)->dev, f , ##a)
#define SPI_NUM_ATTRS 10 /* increase this if you add attributes */
#define SPI_NUM_ATTRS 13 /* increase this if you add attributes */
#define SPI_OTHER_ATTRS 1 /* Increase this if you add "always
* on" attributes */
#define SPI_HOST_ATTRS 1
@ -219,8 +219,11 @@ static int spi_setup_transport_attrs(struct device *dev)
struct scsi_target *starget = to_scsi_target(dev);
spi_period(starget) = -1; /* illegal value */
spi_min_period(starget) = 0;
spi_offset(starget) = 0; /* async */
spi_max_offset(starget) = 255;
spi_width(starget) = 0; /* narrow */
spi_max_width(starget) = 1;
spi_iu(starget) = 0; /* no IU */
spi_dt(starget) = 0; /* ST */
spi_qas(starget) = 0;
@ -235,6 +238,34 @@ static int spi_setup_transport_attrs(struct device *dev)
return 0;
}
#define spi_transport_show_simple(field, format_string) \
\
static ssize_t \
show_spi_transport_##field(struct class_device *cdev, char *buf) \
{ \
struct scsi_target *starget = transport_class_to_starget(cdev); \
struct spi_transport_attrs *tp; \
\
tp = (struct spi_transport_attrs *)&starget->starget_data; \
return snprintf(buf, 20, format_string, tp->field); \
}
#define spi_transport_store_simple(field, format_string) \
\
static ssize_t \
store_spi_transport_##field(struct class_device *cdev, const char *buf, \
size_t count) \
{ \
int val; \
struct scsi_target *starget = transport_class_to_starget(cdev); \
struct spi_transport_attrs *tp; \
\
tp = (struct spi_transport_attrs *)&starget->starget_data; \
val = simple_strtoul(buf, NULL, 0); \
tp->field = val; \
return count; \
}
#define spi_transport_show_function(field, format_string) \
\
static ssize_t \
@ -261,6 +292,25 @@ store_spi_transport_##field(struct class_device *cdev, const char *buf, \
struct spi_internal *i = to_spi_internal(shost->transportt); \
\
val = simple_strtoul(buf, NULL, 0); \
i->f->set_##field(starget, val); \
return count; \
}
#define spi_transport_store_max(field, format_string) \
static ssize_t \
store_spi_transport_##field(struct class_device *cdev, const char *buf, \
size_t count) \
{ \
int val; \
struct scsi_target *starget = transport_class_to_starget(cdev); \
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \
struct spi_internal *i = to_spi_internal(shost->transportt); \
struct spi_transport_attrs *tp \
= (struct spi_transport_attrs *)&starget->starget_data; \
\
val = simple_strtoul(buf, NULL, 0); \
if (val > tp->max_##field) \
val = tp->max_##field; \
i->f->set_##field(starget, val); \
return count; \
}
@ -272,9 +322,24 @@ static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \
store_spi_transport_##field);
#define spi_transport_simple_attr(field, format_string) \
spi_transport_show_simple(field, format_string) \
spi_transport_store_simple(field, format_string) \
static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \
store_spi_transport_##field);
#define spi_transport_max_attr(field, format_string) \
spi_transport_show_function(field, format_string) \
spi_transport_store_max(field, format_string) \
spi_transport_simple_attr(max_##field, format_string) \
static CLASS_DEVICE_ATTR(field, S_IRUGO | S_IWUSR, \
show_spi_transport_##field, \
store_spi_transport_##field);
/* The Parallel SCSI Tranport Attributes: */
spi_transport_rd_attr(offset, "%d\n");
spi_transport_rd_attr(width, "%d\n");
spi_transport_max_attr(offset, "%d\n");
spi_transport_max_attr(width, "%d\n");
spi_transport_rd_attr(iu, "%d\n");
spi_transport_rd_attr(dt, "%d\n");
spi_transport_rd_attr(qas, "%d\n");
@ -300,26 +365,18 @@ static CLASS_DEVICE_ATTR(revalidate, S_IWUSR, NULL, store_spi_revalidate);
/* Translate the period into ns according to the current spec
* for SDTR/PPR messages */
static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
static ssize_t
show_spi_transport_period_helper(struct class_device *cdev, char *buf,
int period)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct spi_transport_attrs *tp;
int len, picosec;
struct spi_internal *i = to_spi_internal(shost->transportt);
tp = (struct spi_transport_attrs *)&starget->starget_data;
if (i->f->get_period)
i->f->get_period(starget);
if (tp->period < 0 || tp->period > 0xff) {
if (period < 0 || period > 0xff) {
picosec = -1;
} else if (tp->period <= SPI_STATIC_PPR) {
picosec = ppr_to_ps[tp->period];
} else if (period <= SPI_STATIC_PPR) {
picosec = ppr_to_ps[period];
} else {
picosec = tp->period * 4000;
picosec = period * 4000;
}
if (picosec == -1) {
@ -334,12 +391,9 @@ static ssize_t show_spi_transport_period(struct class_device *cdev, char *buf)
}
static ssize_t
store_spi_transport_period(struct class_device *cdev, const char *buf,
size_t count)
store_spi_transport_period_helper(struct class_device *cdev, const char *buf,
size_t count, int *periodp)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct spi_internal *i = to_spi_internal(shost->transportt);
int j, picosec, period = -1;
char *endp;
@ -368,15 +422,79 @@ store_spi_transport_period(struct class_device *cdev, const char *buf,
if (period > 0xff)
period = 0xff;
i->f->set_period(starget, period);
*periodp = period;
return count;
}
static ssize_t
show_spi_transport_period(struct class_device *cdev, char *buf)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct spi_internal *i = to_spi_internal(shost->transportt);
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
if (i->f->get_period)
i->f->get_period(starget);
return show_spi_transport_period_helper(cdev, buf, tp->period);
}
static ssize_t
store_spi_transport_period(struct class_device *cdev, const char *buf,
size_t count)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
struct spi_internal *i = to_spi_internal(shost->transportt);
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
int period, retval;
retval = store_spi_transport_period_helper(cdev, buf, count, &period);
if (period < tp->min_period)
period = tp->min_period;
i->f->set_period(starget, period);
return retval;
}
static CLASS_DEVICE_ATTR(period, S_IRUGO | S_IWUSR,
show_spi_transport_period,
store_spi_transport_period);
static ssize_t
show_spi_transport_min_period(struct class_device *cdev, char *buf)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
return show_spi_transport_period_helper(cdev, buf, tp->min_period);
}
static ssize_t
store_spi_transport_min_period(struct class_device *cdev, const char *buf,
size_t count)
{
struct scsi_target *starget = transport_class_to_starget(cdev);
struct spi_transport_attrs *tp =
(struct spi_transport_attrs *)&starget->starget_data;
return store_spi_transport_period_helper(cdev, buf, count,
&tp->min_period);
}
static CLASS_DEVICE_ATTR(min_period, S_IRUGO | S_IWUSR,
show_spi_transport_min_period,
store_spi_transport_min_period);
static ssize_t show_spi_host_signalling(struct class_device *cdev, char *buf)
{
struct Scsi_Host *shost = transport_class_to_shost(cdev);
@ -642,6 +760,7 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
{
struct spi_internal *i = to_spi_internal(sreq->sr_host->transportt);
struct scsi_device *sdev = sreq->sr_device;
struct scsi_target *starget = sdev->sdev_target;
int len = sdev->inquiry_len;
/* first set us up for narrow async */
DV_SET(offset, 0);
@ -655,9 +774,11 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
}
/* test width */
if (i->f->set_width && sdev->wdtr) {
if (i->f->set_width && spi_max_width(starget) && sdev->wdtr) {
i->f->set_width(sdev->sdev_target, 1);
printk("WIDTH IS %d\n", spi_max_width(starget));
if (spi_dv_device_compare_inquiry(sreq, buffer,
buffer + len,
DV_LOOPS)
@ -684,8 +805,8 @@ spi_dv_device_internal(struct scsi_request *sreq, u8 *buffer)
retry:
/* now set up to the maximum */
DV_SET(offset, 255);
DV_SET(period, 1);
DV_SET(offset, spi_max_offset(starget));
DV_SET(period, spi_min_period(starget));
if (len == 0) {
SPI_PRINTK(sdev->sdev_target, KERN_INFO, "Domain Validation skipping write tests\n");
@ -892,6 +1013,16 @@ EXPORT_SYMBOL(spi_display_xfer_agreement);
if (i->f->show_##field) \
count++
#define SETUP_RELATED_ATTRIBUTE(field, rel_field) \
i->private_attrs[count] = class_device_attr_##field; \
if (!i->f->set_##rel_field) { \
i->private_attrs[count].attr.mode = S_IRUGO; \
i->private_attrs[count].store = NULL; \
} \
i->attrs[count] = &i->private_attrs[count]; \
if (i->f->show_##rel_field) \
count++
#define SETUP_HOST_ATTRIBUTE(field) \
i->private_host_attrs[count] = class_device_attr_##field; \
if (!i->f->set_##field) { \
@ -975,8 +1106,11 @@ spi_attach_transport(struct spi_function_template *ft)
i->f = ft;
SETUP_ATTRIBUTE(period);
SETUP_RELATED_ATTRIBUTE(min_period, period);
SETUP_ATTRIBUTE(offset);
SETUP_RELATED_ATTRIBUTE(max_offset, offset);
SETUP_ATTRIBUTE(width);
SETUP_RELATED_ATTRIBUTE(max_width, width);
SETUP_ATTRIBUTE(iu);
SETUP_ATTRIBUTE(dt);
SETUP_ATTRIBUTE(qas);

6
include/scsi/scsi_transport_spi.h
View File

@ -27,8 +27,11 @@ struct scsi_transport_template;
struct spi_transport_attrs {
int period; /* value in the PPR/SDTR command */
int min_period;
int offset;
int max_offset;
unsigned int width:1; /* 0 - narrow, 1 - wide */
unsigned int max_width:1;
unsigned int iu:1; /* Information Units enabled */
unsigned int dt:1; /* DT clocking enabled */
unsigned int qas:1; /* Quick Arbitration and Selection enabled */
@ -63,8 +66,11 @@ struct spi_host_attrs {
/* accessor functions */
#define spi_period(x) (((struct spi_transport_attrs *)&(x)->starget_data)->period)
#define spi_min_period(x) (((struct spi_transport_attrs *)&(x)->starget_data)->min_period)
#define spi_offset(x) (((struct spi_transport_attrs *)&(x)->starget_data)->offset)
#define spi_max_offset(x) (((struct spi_transport_attrs *)&(x)->starget_data)->max_offset)
#define spi_width(x) (((struct spi_transport_attrs *)&(x)->starget_data)->width)
#define spi_max_width(x) (((struct spi_transport_attrs *)&(x)->starget_data)->max_width)
#define spi_iu(x) (((struct spi_transport_attrs *)&(x)->starget_data)->iu)
#define spi_dt(x) (((struct spi_transport_attrs *)&(x)->starget_data)->dt)
#define spi_qas(x) (((struct spi_transport_attrs *)&(x)->starget_data)->qas)