You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
274 lines
6.4 KiB
274 lines
6.4 KiB
#ifndef CCISS_H
|
|
#define CCISS_H
|
|
|
|
#include <linux/genhd.h>
|
|
|
|
#include "cciss_cmd.h"
|
|
|
|
|
|
#define NWD 16
|
|
#define NWD_SHIFT 4
|
|
#define MAX_PART (1 << NWD_SHIFT)
|
|
|
|
#define IO_OK 0
|
|
#define IO_ERROR 1
|
|
|
|
#define MAJOR_NR COMPAQ_CISS_MAJOR
|
|
|
|
struct ctlr_info;
|
|
typedef struct ctlr_info ctlr_info_t;
|
|
|
|
struct access_method {
|
|
void (*submit_command)(ctlr_info_t *h, CommandList_struct *c);
|
|
void (*set_intr_mask)(ctlr_info_t *h, unsigned long val);
|
|
unsigned long (*fifo_full)(ctlr_info_t *h);
|
|
unsigned long (*intr_pending)(ctlr_info_t *h);
|
|
unsigned long (*command_completed)(ctlr_info_t *h);
|
|
};
|
|
typedef struct _drive_info_struct
|
|
{
|
|
__u32 LunID;
|
|
int usage_count;
|
|
struct request_queue *queue;
|
|
sector_t nr_blocks;
|
|
int block_size;
|
|
int heads;
|
|
int sectors;
|
|
int cylinders;
|
|
int raid_level; /* set to -1 to indicate that
|
|
* the drive is not in use/configured
|
|
*/
|
|
int busy_configuring; /*This is set when the drive is being removed
|
|
*to prevent it from being opened or it's queue
|
|
*from being started.
|
|
*/
|
|
} drive_info_struct;
|
|
|
|
struct ctlr_info
|
|
{
|
|
int ctlr;
|
|
char devname[8];
|
|
char *product_name;
|
|
char firm_ver[4]; // Firmware version
|
|
struct pci_dev *pdev;
|
|
__u32 board_id;
|
|
void __iomem *vaddr;
|
|
unsigned long paddr;
|
|
unsigned long io_mem_addr;
|
|
unsigned long io_mem_length;
|
|
CfgTable_struct __iomem *cfgtable;
|
|
unsigned int intr;
|
|
int interrupts_enabled;
|
|
int major;
|
|
int max_commands;
|
|
int commands_outstanding;
|
|
int max_outstanding; /* Debug */
|
|
int num_luns;
|
|
int highest_lun;
|
|
int usage_count; /* number of opens all all minor devices */
|
|
|
|
// information about each logical volume
|
|
drive_info_struct drv[CISS_MAX_LUN];
|
|
|
|
struct access_method access;
|
|
|
|
/* queue and queue Info */
|
|
CommandList_struct *reqQ;
|
|
CommandList_struct *cmpQ;
|
|
unsigned int Qdepth;
|
|
unsigned int maxQsinceinit;
|
|
unsigned int maxSG;
|
|
spinlock_t lock;
|
|
|
|
//* pointers to command and error info pool */
|
|
CommandList_struct *cmd_pool;
|
|
dma_addr_t cmd_pool_dhandle;
|
|
ErrorInfo_struct *errinfo_pool;
|
|
dma_addr_t errinfo_pool_dhandle;
|
|
unsigned long *cmd_pool_bits;
|
|
int nr_allocs;
|
|
int nr_frees;
|
|
int busy_configuring;
|
|
int busy_initializing;
|
|
|
|
/* This element holds the zero based queue number of the last
|
|
* queue to be started. It is used for fairness.
|
|
*/
|
|
int next_to_run;
|
|
|
|
// Disk structures we need to pass back
|
|
struct gendisk *gendisk[NWD];
|
|
#ifdef CONFIG_CISS_SCSI_TAPE
|
|
void *scsi_ctlr; /* ptr to structure containing scsi related stuff */
|
|
#endif
|
|
unsigned char alive;
|
|
};
|
|
|
|
/* Defining the diffent access_menthods */
|
|
/*
|
|
* Memory mapped FIFO interface (SMART 53xx cards)
|
|
*/
|
|
#define SA5_DOORBELL 0x20
|
|
#define SA5_REQUEST_PORT_OFFSET 0x40
|
|
#define SA5_REPLY_INTR_MASK_OFFSET 0x34
|
|
#define SA5_REPLY_PORT_OFFSET 0x44
|
|
#define SA5_INTR_STATUS 0x30
|
|
#define SA5_SCRATCHPAD_OFFSET 0xB0
|
|
|
|
#define SA5_CTCFG_OFFSET 0xB4
|
|
#define SA5_CTMEM_OFFSET 0xB8
|
|
|
|
#define SA5_INTR_OFF 0x08
|
|
#define SA5B_INTR_OFF 0x04
|
|
#define SA5_INTR_PENDING 0x08
|
|
#define SA5B_INTR_PENDING 0x04
|
|
#define FIFO_EMPTY 0xffffffff
|
|
#define CCISS_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */
|
|
|
|
#define CISS_ERROR_BIT 0x02
|
|
|
|
#define CCISS_INTR_ON 1
|
|
#define CCISS_INTR_OFF 0
|
|
/*
|
|
Send the command to the hardware
|
|
*/
|
|
static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c)
|
|
{
|
|
#ifdef CCISS_DEBUG
|
|
printk("Sending %x - down to controller\n", c->busaddr );
|
|
#endif /* CCISS_DEBUG */
|
|
writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
|
|
h->commands_outstanding++;
|
|
if ( h->commands_outstanding > h->max_outstanding)
|
|
h->max_outstanding = h->commands_outstanding;
|
|
}
|
|
|
|
/*
|
|
* This card is the opposite of the other cards.
|
|
* 0 turns interrupts on...
|
|
* 0x08 turns them off...
|
|
*/
|
|
static void SA5_intr_mask(ctlr_info_t *h, unsigned long val)
|
|
{
|
|
if (val)
|
|
{ /* Turn interrupts on */
|
|
h->interrupts_enabled = 1;
|
|
writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
|
|
} else /* Turn them off */
|
|
{
|
|
h->interrupts_enabled = 0;
|
|
writel( SA5_INTR_OFF,
|
|
h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
|
|
}
|
|
}
|
|
/*
|
|
* This card is the opposite of the other cards.
|
|
* 0 turns interrupts on...
|
|
* 0x04 turns them off...
|
|
*/
|
|
static void SA5B_intr_mask(ctlr_info_t *h, unsigned long val)
|
|
{
|
|
if (val)
|
|
{ /* Turn interrupts on */
|
|
h->interrupts_enabled = 1;
|
|
writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
|
|
} else /* Turn them off */
|
|
{
|
|
h->interrupts_enabled = 0;
|
|
writel( SA5B_INTR_OFF,
|
|
h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
|
|
}
|
|
}
|
|
/*
|
|
* Returns true if fifo is full.
|
|
*
|
|
*/
|
|
static unsigned long SA5_fifo_full(ctlr_info_t *h)
|
|
{
|
|
if( h->commands_outstanding >= h->max_commands)
|
|
return(1);
|
|
else
|
|
return(0);
|
|
|
|
}
|
|
/*
|
|
* returns value read from hardware.
|
|
* returns FIFO_EMPTY if there is nothing to read
|
|
*/
|
|
static unsigned long SA5_completed(ctlr_info_t *h)
|
|
{
|
|
unsigned long register_value
|
|
= readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
|
|
if(register_value != FIFO_EMPTY)
|
|
{
|
|
h->commands_outstanding--;
|
|
#ifdef CCISS_DEBUG
|
|
printk("cciss: Read %lx back from board\n", register_value);
|
|
#endif /* CCISS_DEBUG */
|
|
}
|
|
#ifdef CCISS_DEBUG
|
|
else
|
|
{
|
|
printk("cciss: FIFO Empty read\n");
|
|
}
|
|
#endif
|
|
return ( register_value);
|
|
|
|
}
|
|
/*
|
|
* Returns true if an interrupt is pending..
|
|
*/
|
|
static unsigned long SA5_intr_pending(ctlr_info_t *h)
|
|
{
|
|
unsigned long register_value =
|
|
readl(h->vaddr + SA5_INTR_STATUS);
|
|
#ifdef CCISS_DEBUG
|
|
printk("cciss: intr_pending %lx\n", register_value);
|
|
#endif /* CCISS_DEBUG */
|
|
if( register_value & SA5_INTR_PENDING)
|
|
return 1;
|
|
return 0 ;
|
|
}
|
|
|
|
/*
|
|
* Returns true if an interrupt is pending..
|
|
*/
|
|
static unsigned long SA5B_intr_pending(ctlr_info_t *h)
|
|
{
|
|
unsigned long register_value =
|
|
readl(h->vaddr + SA5_INTR_STATUS);
|
|
#ifdef CCISS_DEBUG
|
|
printk("cciss: intr_pending %lx\n", register_value);
|
|
#endif /* CCISS_DEBUG */
|
|
if( register_value & SA5B_INTR_PENDING)
|
|
return 1;
|
|
return 0 ;
|
|
}
|
|
|
|
|
|
static struct access_method SA5_access = {
|
|
SA5_submit_command,
|
|
SA5_intr_mask,
|
|
SA5_fifo_full,
|
|
SA5_intr_pending,
|
|
SA5_completed,
|
|
};
|
|
|
|
static struct access_method SA5B_access = {
|
|
SA5_submit_command,
|
|
SA5B_intr_mask,
|
|
SA5_fifo_full,
|
|
SA5B_intr_pending,
|
|
SA5_completed,
|
|
};
|
|
|
|
struct board_type {
|
|
__u32 board_id;
|
|
char *product_name;
|
|
struct access_method *access;
|
|
};
|
|
|
|
#define CCISS_LOCK(i) (&hba[i]->lock)
|
|
|
|
#endif /* CCISS_H */
|
|
|
|
|