4 #include <linux/genhd.h>
10 #define MAX_PART (1 << NWD_SHIFT)
20 typedef struct ctlr_info ctlr_info_t;
22 struct access_method {
23 void (*submit_command)(ctlr_info_t *h, CommandList_struct *c);
24 void (*set_intr_mask)(ctlr_info_t *h, unsigned long val);
25 unsigned long (*fifo_full)(ctlr_info_t *h);
26 unsigned long (*intr_pending)(ctlr_info_t *h);
27 unsigned long (*command_completed)(ctlr_info_t *h);
29 typedef struct _drive_info_struct
33 struct request_queue *queue;
39 int raid_level; /* set to -1 to indicate that
40 * the drive is not in use/configured
42 int busy_configuring; /* This is set when a drive is being removed
43 * to prevent it from being opened or it's
44 * queue from being started.
47 __u8 serial_no[16]; /* from inquiry page 0x83,
48 * not necc. null terminated.
50 char vendor[VENDOR_LEN + 1]; /* SCSI vendor string */
51 char model[MODEL_LEN + 1]; /* SCSI model string */
52 char rev[REV_LEN + 1]; /* SCSI revision string */
55 #ifdef CONFIG_CISS_SCSI_TAPE
57 struct sendcmd_reject_list {
59 unsigned long *complete; /* array of NR_CMDS tags */
68 char firm_ver[4]; // Firmware version
73 int nr_cmds; /* Number of commands allowed on this controller */
74 CfgTable_struct __iomem *cfgtable;
75 int interrupts_enabled;
78 int commands_outstanding;
79 int max_outstanding; /* Debug */
82 int usage_count; /* number of opens all all minor devices */
83 # define DOORBELL_INT 0
84 # define PERF_MODE_INT 1
85 # define SIMPLE_MODE_INT 2
86 # define MEMQ_MODE_INT 3
88 unsigned int msix_vector;
89 unsigned int msi_vector;
90 int cciss_max_sectors;
93 BYTE cciss_read_capacity;
95 // information about each logical volume
96 drive_info_struct drv[CISS_MAX_LUN];
98 struct access_method access;
100 /* queue and queue Info */
101 struct hlist_head reqQ;
102 struct hlist_head cmpQ;
104 unsigned int maxQsinceinit;
108 //* pointers to command and error info pool */
109 CommandList_struct *cmd_pool;
110 dma_addr_t cmd_pool_dhandle;
111 ErrorInfo_struct *errinfo_pool;
112 dma_addr_t errinfo_pool_dhandle;
113 unsigned long *cmd_pool_bits;
116 int busy_configuring;
117 int busy_initializing;
119 /* This element holds the zero based queue number of the last
120 * queue to be started. It is used for fairness.
124 // Disk structures we need to pass back
125 struct gendisk *gendisk[CISS_MAX_LUN];
126 #ifdef CONFIG_CISS_SCSI_TAPE
127 void *scsi_ctlr; /* ptr to structure containing scsi related stuff */
128 /* list of block side commands the scsi error handling sucked up */
129 /* and saved for later processing */
130 struct sendcmd_reject_list scsi_rejects;
133 struct completion *rescan_wait;
134 struct task_struct *cciss_scan_thread;
138 /* Defining the diffent access_menthods */
140 * Memory mapped FIFO interface (SMART 53xx cards)
142 #define SA5_DOORBELL 0x20
143 #define SA5_REQUEST_PORT_OFFSET 0x40
144 #define SA5_REPLY_INTR_MASK_OFFSET 0x34
145 #define SA5_REPLY_PORT_OFFSET 0x44
146 #define SA5_INTR_STATUS 0x30
147 #define SA5_SCRATCHPAD_OFFSET 0xB0
149 #define SA5_CTCFG_OFFSET 0xB4
150 #define SA5_CTMEM_OFFSET 0xB8
152 #define SA5_INTR_OFF 0x08
153 #define SA5B_INTR_OFF 0x04
154 #define SA5_INTR_PENDING 0x08
155 #define SA5B_INTR_PENDING 0x04
156 #define FIFO_EMPTY 0xffffffff
157 #define CCISS_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */
159 #define CISS_ERROR_BIT 0x02
161 #define CCISS_INTR_ON 1
162 #define CCISS_INTR_OFF 0
164 Send the command to the hardware
166 static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c)
169 printk("Sending %x - down to controller\n", c->busaddr );
170 #endif /* CCISS_DEBUG */
171 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
172 h->commands_outstanding++;
173 if ( h->commands_outstanding > h->max_outstanding)
174 h->max_outstanding = h->commands_outstanding;
178 * This card is the opposite of the other cards.
179 * 0 turns interrupts on...
180 * 0x08 turns them off...
182 static void SA5_intr_mask(ctlr_info_t *h, unsigned long val)
185 { /* Turn interrupts on */
186 h->interrupts_enabled = 1;
187 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
188 } else /* Turn them off */
190 h->interrupts_enabled = 0;
191 writel( SA5_INTR_OFF,
192 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
196 * This card is the opposite of the other cards.
197 * 0 turns interrupts on...
198 * 0x04 turns them off...
200 static void SA5B_intr_mask(ctlr_info_t *h, unsigned long val)
203 { /* Turn interrupts on */
204 h->interrupts_enabled = 1;
205 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
206 } else /* Turn them off */
208 h->interrupts_enabled = 0;
209 writel( SA5B_INTR_OFF,
210 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
214 * Returns true if fifo is full.
217 static unsigned long SA5_fifo_full(ctlr_info_t *h)
219 if( h->commands_outstanding >= h->max_commands)
226 * returns value read from hardware.
227 * returns FIFO_EMPTY if there is nothing to read
229 static unsigned long SA5_completed(ctlr_info_t *h)
231 unsigned long register_value
232 = readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
233 if(register_value != FIFO_EMPTY)
235 h->commands_outstanding--;
237 printk("cciss: Read %lx back from board\n", register_value);
238 #endif /* CCISS_DEBUG */
243 printk("cciss: FIFO Empty read\n");
246 return ( register_value);
250 * Returns true if an interrupt is pending..
252 static unsigned long SA5_intr_pending(ctlr_info_t *h)
254 unsigned long register_value =
255 readl(h->vaddr + SA5_INTR_STATUS);
257 printk("cciss: intr_pending %lx\n", register_value);
258 #endif /* CCISS_DEBUG */
259 if( register_value & SA5_INTR_PENDING)
265 * Returns true if an interrupt is pending..
267 static unsigned long SA5B_intr_pending(ctlr_info_t *h)
269 unsigned long register_value =
270 readl(h->vaddr + SA5_INTR_STATUS);
272 printk("cciss: intr_pending %lx\n", register_value);
273 #endif /* CCISS_DEBUG */
274 if( register_value & SA5B_INTR_PENDING)
280 static struct access_method SA5_access = {
288 static struct access_method SA5B_access = {
299 struct access_method *access;
300 int nr_cmds; /* Max cmds this kind of ctlr can handle. */
303 #define CCISS_LOCK(i) (&hba[i]->lock)