#ifndef CCISS_H #define CCISS_H #include <linux/genhd.h> #include "cciss_cmd.h" #define NWD_SHIFT 4 #define MAX_PART (1 << NWD_SHIFT) #define IO_OK 0 #define IO_ERROR 1 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; #ifdef CONFIG_CISS_SCSI_TAPE struct sendcmd_reject_list { int ncompletions; unsigned long *complete; /* array of NR_CMDS tags */ }; #endif 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; int nr_cmds; /* Number of commands allowed on this controller */ CfgTable_struct __iomem *cfgtable; 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 */ # define DOORBELL_INT 0 # define PERF_MODE_INT 1 # define SIMPLE_MODE_INT 2 # define MEMQ_MODE_INT 3 unsigned int intr[4]; unsigned int msix_vector; unsigned int msi_vector; int cciss_max_sectors; BYTE cciss_read; BYTE cciss_write; BYTE cciss_read_capacity; // 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[CISS_MAX_LUN]; #ifdef CONFIG_CISS_SCSI_TAPE void *scsi_ctlr; /* ptr to structure containing scsi related stuff */ /* list of block side commands the scsi error handling sucked up */ /* and saved for later processing */ struct sendcmd_reject_list scsi_rejects; #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; int nr_cmds; /* Max cmds this kind of ctlr can handle. */ }; #define CCISS_LOCK(i) (&hba[i]->lock) #endif /* CCISS_H */