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1da177e4 LT |
1 | #ifndef CCISS_H |
2 | #define CCISS_H | |
3 | ||
4 | #include <linux/genhd.h> | |
5 | ||
6 | #include "cciss_cmd.h" | |
7 | ||
8 | ||
1da177e4 LT |
9 | #define NWD_SHIFT 4 |
10 | #define MAX_PART (1 << NWD_SHIFT) | |
11 | ||
12 | #define IO_OK 0 | |
13 | #define IO_ERROR 1 | |
789a424a | 14 | #define IO_NEEDS_RETRY 3 |
1da177e4 | 15 | |
7fe06326 AP |
16 | #define VENDOR_LEN 8 |
17 | #define MODEL_LEN 16 | |
18 | #define REV_LEN 4 | |
19 | ||
1da177e4 LT |
20 | struct ctlr_info; |
21 | typedef struct ctlr_info ctlr_info_t; | |
22 | ||
23 | struct access_method { | |
24 | void (*submit_command)(ctlr_info_t *h, CommandList_struct *c); | |
25 | void (*set_intr_mask)(ctlr_info_t *h, unsigned long val); | |
26 | unsigned long (*fifo_full)(ctlr_info_t *h); | |
27 | unsigned long (*intr_pending)(ctlr_info_t *h); | |
28 | unsigned long (*command_completed)(ctlr_info_t *h); | |
29 | }; | |
30 | typedef struct _drive_info_struct | |
31 | { | |
32 | __u32 LunID; | |
33 | int usage_count; | |
ad2b9312 | 34 | struct request_queue *queue; |
1da177e4 LT |
35 | sector_t nr_blocks; |
36 | int block_size; | |
37 | int heads; | |
38 | int sectors; | |
39 | int cylinders; | |
ddd47442 MM |
40 | int raid_level; /* set to -1 to indicate that |
41 | * the drive is not in use/configured | |
7fe06326 AP |
42 | */ |
43 | int busy_configuring; /* This is set when a drive is being removed | |
44 | * to prevent it from being opened or it's | |
45 | * queue from being started. | |
46 | */ | |
47 | struct device dev; | |
48 | __u8 serial_no[16]; /* from inquiry page 0x83, | |
49 | * not necc. null terminated. | |
50 | */ | |
51 | char vendor[VENDOR_LEN + 1]; /* SCSI vendor string */ | |
52 | char model[MODEL_LEN + 1]; /* SCSI model string */ | |
53 | char rev[REV_LEN + 1]; /* SCSI revision string */ | |
1da177e4 LT |
54 | } drive_info_struct; |
55 | ||
56 | struct ctlr_info | |
57 | { | |
58 | int ctlr; | |
59 | char devname[8]; | |
60 | char *product_name; | |
61 | char firm_ver[4]; // Firmware version | |
62 | struct pci_dev *pdev; | |
63 | __u32 board_id; | |
64 | void __iomem *vaddr; | |
65 | unsigned long paddr; | |
f880632f | 66 | int nr_cmds; /* Number of commands allowed on this controller */ |
1da177e4 | 67 | CfgTable_struct __iomem *cfgtable; |
1da177e4 LT |
68 | int interrupts_enabled; |
69 | int major; | |
70 | int max_commands; | |
71 | int commands_outstanding; | |
72 | int max_outstanding; /* Debug */ | |
73 | int num_luns; | |
74 | int highest_lun; | |
75 | int usage_count; /* number of opens all all minor devices */ | |
fb86a35b MM |
76 | # define DOORBELL_INT 0 |
77 | # define PERF_MODE_INT 1 | |
78 | # define SIMPLE_MODE_INT 2 | |
79 | # define MEMQ_MODE_INT 3 | |
80 | unsigned int intr[4]; | |
81 | unsigned int msix_vector; | |
82 | unsigned int msi_vector; | |
92c4231a | 83 | int cciss_max_sectors; |
00988a35 MMOD |
84 | BYTE cciss_read; |
85 | BYTE cciss_write; | |
86 | BYTE cciss_read_capacity; | |
1da177e4 LT |
87 | |
88 | // information about each logical volume | |
89 | drive_info_struct drv[CISS_MAX_LUN]; | |
90 | ||
91 | struct access_method access; | |
92 | ||
93 | /* queue and queue Info */ | |
8a3173de JA |
94 | struct hlist_head reqQ; |
95 | struct hlist_head cmpQ; | |
1da177e4 LT |
96 | unsigned int Qdepth; |
97 | unsigned int maxQsinceinit; | |
98 | unsigned int maxSG; | |
99 | spinlock_t lock; | |
1da177e4 LT |
100 | |
101 | //* pointers to command and error info pool */ | |
102 | CommandList_struct *cmd_pool; | |
103 | dma_addr_t cmd_pool_dhandle; | |
104 | ErrorInfo_struct *errinfo_pool; | |
105 | dma_addr_t errinfo_pool_dhandle; | |
106 | unsigned long *cmd_pool_bits; | |
107 | int nr_allocs; | |
108 | int nr_frees; | |
109 | int busy_configuring; | |
1f8ef380 | 110 | int busy_initializing; |
1da177e4 LT |
111 | |
112 | /* This element holds the zero based queue number of the last | |
113 | * queue to be started. It is used for fairness. | |
114 | */ | |
115 | int next_to_run; | |
116 | ||
117 | // Disk structures we need to pass back | |
799202cb | 118 | struct gendisk *gendisk[CISS_MAX_LUN]; |
1da177e4 LT |
119 | #ifdef CONFIG_CISS_SCSI_TAPE |
120 | void *scsi_ctlr; /* ptr to structure containing scsi related stuff */ | |
3da8b713 | 121 | /* list of block side commands the scsi error handling sucked up */ |
122 | /* and saved for later processing */ | |
1da177e4 | 123 | #endif |
33079b21 | 124 | unsigned char alive; |
0a9279cc MM |
125 | struct completion *rescan_wait; |
126 | struct task_struct *cciss_scan_thread; | |
7fe06326 | 127 | struct device dev; |
1da177e4 LT |
128 | }; |
129 | ||
130 | /* Defining the diffent access_menthods */ | |
131 | /* | |
132 | * Memory mapped FIFO interface (SMART 53xx cards) | |
133 | */ | |
134 | #define SA5_DOORBELL 0x20 | |
135 | #define SA5_REQUEST_PORT_OFFSET 0x40 | |
136 | #define SA5_REPLY_INTR_MASK_OFFSET 0x34 | |
137 | #define SA5_REPLY_PORT_OFFSET 0x44 | |
138 | #define SA5_INTR_STATUS 0x30 | |
139 | #define SA5_SCRATCHPAD_OFFSET 0xB0 | |
140 | ||
141 | #define SA5_CTCFG_OFFSET 0xB4 | |
142 | #define SA5_CTMEM_OFFSET 0xB8 | |
143 | ||
144 | #define SA5_INTR_OFF 0x08 | |
145 | #define SA5B_INTR_OFF 0x04 | |
146 | #define SA5_INTR_PENDING 0x08 | |
147 | #define SA5B_INTR_PENDING 0x04 | |
148 | #define FIFO_EMPTY 0xffffffff | |
149 | #define CCISS_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */ | |
150 | ||
151 | #define CISS_ERROR_BIT 0x02 | |
152 | ||
153 | #define CCISS_INTR_ON 1 | |
154 | #define CCISS_INTR_OFF 0 | |
155 | /* | |
156 | Send the command to the hardware | |
157 | */ | |
158 | static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c) | |
159 | { | |
160 | #ifdef CCISS_DEBUG | |
161 | printk("Sending %x - down to controller\n", c->busaddr ); | |
162 | #endif /* CCISS_DEBUG */ | |
163 | writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); | |
164 | h->commands_outstanding++; | |
165 | if ( h->commands_outstanding > h->max_outstanding) | |
166 | h->max_outstanding = h->commands_outstanding; | |
167 | } | |
168 | ||
169 | /* | |
170 | * This card is the opposite of the other cards. | |
171 | * 0 turns interrupts on... | |
172 | * 0x08 turns them off... | |
173 | */ | |
174 | static void SA5_intr_mask(ctlr_info_t *h, unsigned long val) | |
175 | { | |
176 | if (val) | |
177 | { /* Turn interrupts on */ | |
178 | h->interrupts_enabled = 1; | |
179 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
180 | } else /* Turn them off */ | |
181 | { | |
182 | h->interrupts_enabled = 0; | |
183 | writel( SA5_INTR_OFF, | |
184 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
185 | } | |
186 | } | |
187 | /* | |
188 | * This card is the opposite of the other cards. | |
189 | * 0 turns interrupts on... | |
190 | * 0x04 turns them off... | |
191 | */ | |
192 | static void SA5B_intr_mask(ctlr_info_t *h, unsigned long val) | |
193 | { | |
194 | if (val) | |
195 | { /* Turn interrupts on */ | |
196 | h->interrupts_enabled = 1; | |
197 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
198 | } else /* Turn them off */ | |
199 | { | |
200 | h->interrupts_enabled = 0; | |
201 | writel( SA5B_INTR_OFF, | |
202 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
203 | } | |
204 | } | |
205 | /* | |
206 | * Returns true if fifo is full. | |
207 | * | |
208 | */ | |
209 | static unsigned long SA5_fifo_full(ctlr_info_t *h) | |
210 | { | |
211 | if( h->commands_outstanding >= h->max_commands) | |
212 | return(1); | |
213 | else | |
214 | return(0); | |
215 | ||
216 | } | |
217 | /* | |
218 | * returns value read from hardware. | |
219 | * returns FIFO_EMPTY if there is nothing to read | |
220 | */ | |
221 | static unsigned long SA5_completed(ctlr_info_t *h) | |
222 | { | |
223 | unsigned long register_value | |
224 | = readl(h->vaddr + SA5_REPLY_PORT_OFFSET); | |
225 | if(register_value != FIFO_EMPTY) | |
226 | { | |
227 | h->commands_outstanding--; | |
228 | #ifdef CCISS_DEBUG | |
229 | printk("cciss: Read %lx back from board\n", register_value); | |
230 | #endif /* CCISS_DEBUG */ | |
231 | } | |
232 | #ifdef CCISS_DEBUG | |
233 | else | |
234 | { | |
235 | printk("cciss: FIFO Empty read\n"); | |
236 | } | |
237 | #endif | |
238 | return ( register_value); | |
239 | ||
240 | } | |
241 | /* | |
242 | * Returns true if an interrupt is pending.. | |
243 | */ | |
244 | static unsigned long SA5_intr_pending(ctlr_info_t *h) | |
245 | { | |
246 | unsigned long register_value = | |
247 | readl(h->vaddr + SA5_INTR_STATUS); | |
248 | #ifdef CCISS_DEBUG | |
249 | printk("cciss: intr_pending %lx\n", register_value); | |
250 | #endif /* CCISS_DEBUG */ | |
251 | if( register_value & SA5_INTR_PENDING) | |
252 | return 1; | |
253 | return 0 ; | |
254 | } | |
255 | ||
256 | /* | |
257 | * Returns true if an interrupt is pending.. | |
258 | */ | |
259 | static unsigned long SA5B_intr_pending(ctlr_info_t *h) | |
260 | { | |
261 | unsigned long register_value = | |
262 | readl(h->vaddr + SA5_INTR_STATUS); | |
263 | #ifdef CCISS_DEBUG | |
264 | printk("cciss: intr_pending %lx\n", register_value); | |
265 | #endif /* CCISS_DEBUG */ | |
266 | if( register_value & SA5B_INTR_PENDING) | |
267 | return 1; | |
268 | return 0 ; | |
269 | } | |
270 | ||
271 | ||
272 | static struct access_method SA5_access = { | |
273 | SA5_submit_command, | |
274 | SA5_intr_mask, | |
275 | SA5_fifo_full, | |
276 | SA5_intr_pending, | |
277 | SA5_completed, | |
278 | }; | |
279 | ||
280 | static struct access_method SA5B_access = { | |
281 | SA5_submit_command, | |
282 | SA5B_intr_mask, | |
283 | SA5_fifo_full, | |
284 | SA5B_intr_pending, | |
285 | SA5_completed, | |
286 | }; | |
287 | ||
288 | struct board_type { | |
289 | __u32 board_id; | |
290 | char *product_name; | |
291 | struct access_method *access; | |
f880632f | 292 | int nr_cmds; /* Max cmds this kind of ctlr can handle. */ |
1da177e4 LT |
293 | }; |
294 | ||
ad2b9312 | 295 | #define CCISS_LOCK(i) (&hba[i]->lock) |
1da177e4 LT |
296 | |
297 | #endif /* CCISS_H */ | |
298 |