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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 | ||
9 | #define NWD 16 | |
10 | #define NWD_SHIFT 4 | |
11 | #define MAX_PART (1 << NWD_SHIFT) | |
12 | ||
13 | #define IO_OK 0 | |
14 | #define IO_ERROR 1 | |
15 | ||
16 | #define MAJOR_NR COMPAQ_CISS_MAJOR | |
17 | ||
18 | struct ctlr_info; | |
19 | typedef struct ctlr_info ctlr_info_t; | |
20 | ||
21 | struct access_method { | |
22 | void (*submit_command)(ctlr_info_t *h, CommandList_struct *c); | |
23 | void (*set_intr_mask)(ctlr_info_t *h, unsigned long val); | |
24 | unsigned long (*fifo_full)(ctlr_info_t *h); | |
25 | unsigned long (*intr_pending)(ctlr_info_t *h); | |
26 | unsigned long (*command_completed)(ctlr_info_t *h); | |
27 | }; | |
28 | typedef struct _drive_info_struct | |
29 | { | |
30 | __u32 LunID; | |
31 | int usage_count; | |
ad2b9312 | 32 | struct request_queue *queue; |
1da177e4 LT |
33 | sector_t nr_blocks; |
34 | int block_size; | |
35 | int heads; | |
36 | int sectors; | |
37 | int cylinders; | |
38 | int raid_level; | |
39 | } drive_info_struct; | |
40 | ||
41 | struct ctlr_info | |
42 | { | |
43 | int ctlr; | |
44 | char devname[8]; | |
45 | char *product_name; | |
46 | char firm_ver[4]; // Firmware version | |
47 | struct pci_dev *pdev; | |
48 | __u32 board_id; | |
49 | void __iomem *vaddr; | |
50 | unsigned long paddr; | |
51 | unsigned long io_mem_addr; | |
52 | unsigned long io_mem_length; | |
53 | CfgTable_struct __iomem *cfgtable; | |
54 | unsigned int intr; | |
55 | int interrupts_enabled; | |
56 | int major; | |
57 | int max_commands; | |
58 | int commands_outstanding; | |
59 | int max_outstanding; /* Debug */ | |
60 | int num_luns; | |
61 | int highest_lun; | |
62 | int usage_count; /* number of opens all all minor devices */ | |
63 | ||
64 | // information about each logical volume | |
65 | drive_info_struct drv[CISS_MAX_LUN]; | |
66 | ||
67 | struct access_method access; | |
68 | ||
69 | /* queue and queue Info */ | |
70 | CommandList_struct *reqQ; | |
71 | CommandList_struct *cmpQ; | |
72 | unsigned int Qdepth; | |
73 | unsigned int maxQsinceinit; | |
74 | unsigned int maxSG; | |
75 | spinlock_t lock; | |
1da177e4 LT |
76 | |
77 | //* pointers to command and error info pool */ | |
78 | CommandList_struct *cmd_pool; | |
79 | dma_addr_t cmd_pool_dhandle; | |
80 | ErrorInfo_struct *errinfo_pool; | |
81 | dma_addr_t errinfo_pool_dhandle; | |
82 | unsigned long *cmd_pool_bits; | |
83 | int nr_allocs; | |
84 | int nr_frees; | |
85 | int busy_configuring; | |
1f8ef380 | 86 | int busy_initializing; |
1da177e4 LT |
87 | |
88 | /* This element holds the zero based queue number of the last | |
89 | * queue to be started. It is used for fairness. | |
90 | */ | |
91 | int next_to_run; | |
92 | ||
93 | // Disk structures we need to pass back | |
94 | struct gendisk *gendisk[NWD]; | |
95 | #ifdef CONFIG_CISS_SCSI_TAPE | |
96 | void *scsi_ctlr; /* ptr to structure containing scsi related stuff */ | |
97 | #endif | |
98 | }; | |
99 | ||
100 | /* Defining the diffent access_menthods */ | |
101 | /* | |
102 | * Memory mapped FIFO interface (SMART 53xx cards) | |
103 | */ | |
104 | #define SA5_DOORBELL 0x20 | |
105 | #define SA5_REQUEST_PORT_OFFSET 0x40 | |
106 | #define SA5_REPLY_INTR_MASK_OFFSET 0x34 | |
107 | #define SA5_REPLY_PORT_OFFSET 0x44 | |
108 | #define SA5_INTR_STATUS 0x30 | |
109 | #define SA5_SCRATCHPAD_OFFSET 0xB0 | |
110 | ||
111 | #define SA5_CTCFG_OFFSET 0xB4 | |
112 | #define SA5_CTMEM_OFFSET 0xB8 | |
113 | ||
114 | #define SA5_INTR_OFF 0x08 | |
115 | #define SA5B_INTR_OFF 0x04 | |
116 | #define SA5_INTR_PENDING 0x08 | |
117 | #define SA5B_INTR_PENDING 0x04 | |
118 | #define FIFO_EMPTY 0xffffffff | |
119 | #define CCISS_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */ | |
120 | ||
121 | #define CISS_ERROR_BIT 0x02 | |
122 | ||
123 | #define CCISS_INTR_ON 1 | |
124 | #define CCISS_INTR_OFF 0 | |
125 | /* | |
126 | Send the command to the hardware | |
127 | */ | |
128 | static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c) | |
129 | { | |
130 | #ifdef CCISS_DEBUG | |
131 | printk("Sending %x - down to controller\n", c->busaddr ); | |
132 | #endif /* CCISS_DEBUG */ | |
133 | writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET); | |
134 | h->commands_outstanding++; | |
135 | if ( h->commands_outstanding > h->max_outstanding) | |
136 | h->max_outstanding = h->commands_outstanding; | |
137 | } | |
138 | ||
139 | /* | |
140 | * This card is the opposite of the other cards. | |
141 | * 0 turns interrupts on... | |
142 | * 0x08 turns them off... | |
143 | */ | |
144 | static void SA5_intr_mask(ctlr_info_t *h, unsigned long val) | |
145 | { | |
146 | if (val) | |
147 | { /* Turn interrupts on */ | |
148 | h->interrupts_enabled = 1; | |
149 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
150 | } else /* Turn them off */ | |
151 | { | |
152 | h->interrupts_enabled = 0; | |
153 | writel( SA5_INTR_OFF, | |
154 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
155 | } | |
156 | } | |
157 | /* | |
158 | * This card is the opposite of the other cards. | |
159 | * 0 turns interrupts on... | |
160 | * 0x04 turns them off... | |
161 | */ | |
162 | static void SA5B_intr_mask(ctlr_info_t *h, unsigned long val) | |
163 | { | |
164 | if (val) | |
165 | { /* Turn interrupts on */ | |
166 | h->interrupts_enabled = 1; | |
167 | writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
168 | } else /* Turn them off */ | |
169 | { | |
170 | h->interrupts_enabled = 0; | |
171 | writel( SA5B_INTR_OFF, | |
172 | h->vaddr + SA5_REPLY_INTR_MASK_OFFSET); | |
173 | } | |
174 | } | |
175 | /* | |
176 | * Returns true if fifo is full. | |
177 | * | |
178 | */ | |
179 | static unsigned long SA5_fifo_full(ctlr_info_t *h) | |
180 | { | |
181 | if( h->commands_outstanding >= h->max_commands) | |
182 | return(1); | |
183 | else | |
184 | return(0); | |
185 | ||
186 | } | |
187 | /* | |
188 | * returns value read from hardware. | |
189 | * returns FIFO_EMPTY if there is nothing to read | |
190 | */ | |
191 | static unsigned long SA5_completed(ctlr_info_t *h) | |
192 | { | |
193 | unsigned long register_value | |
194 | = readl(h->vaddr + SA5_REPLY_PORT_OFFSET); | |
195 | if(register_value != FIFO_EMPTY) | |
196 | { | |
197 | h->commands_outstanding--; | |
198 | #ifdef CCISS_DEBUG | |
199 | printk("cciss: Read %lx back from board\n", register_value); | |
200 | #endif /* CCISS_DEBUG */ | |
201 | } | |
202 | #ifdef CCISS_DEBUG | |
203 | else | |
204 | { | |
205 | printk("cciss: FIFO Empty read\n"); | |
206 | } | |
207 | #endif | |
208 | return ( register_value); | |
209 | ||
210 | } | |
211 | /* | |
212 | * Returns true if an interrupt is pending.. | |
213 | */ | |
214 | static unsigned long SA5_intr_pending(ctlr_info_t *h) | |
215 | { | |
216 | unsigned long register_value = | |
217 | readl(h->vaddr + SA5_INTR_STATUS); | |
218 | #ifdef CCISS_DEBUG | |
219 | printk("cciss: intr_pending %lx\n", register_value); | |
220 | #endif /* CCISS_DEBUG */ | |
221 | if( register_value & SA5_INTR_PENDING) | |
222 | return 1; | |
223 | return 0 ; | |
224 | } | |
225 | ||
226 | /* | |
227 | * Returns true if an interrupt is pending.. | |
228 | */ | |
229 | static unsigned long SA5B_intr_pending(ctlr_info_t *h) | |
230 | { | |
231 | unsigned long register_value = | |
232 | readl(h->vaddr + SA5_INTR_STATUS); | |
233 | #ifdef CCISS_DEBUG | |
234 | printk("cciss: intr_pending %lx\n", register_value); | |
235 | #endif /* CCISS_DEBUG */ | |
236 | if( register_value & SA5B_INTR_PENDING) | |
237 | return 1; | |
238 | return 0 ; | |
239 | } | |
240 | ||
241 | ||
242 | static struct access_method SA5_access = { | |
243 | SA5_submit_command, | |
244 | SA5_intr_mask, | |
245 | SA5_fifo_full, | |
246 | SA5_intr_pending, | |
247 | SA5_completed, | |
248 | }; | |
249 | ||
250 | static struct access_method SA5B_access = { | |
251 | SA5_submit_command, | |
252 | SA5B_intr_mask, | |
253 | SA5_fifo_full, | |
254 | SA5B_intr_pending, | |
255 | SA5_completed, | |
256 | }; | |
257 | ||
258 | struct board_type { | |
259 | __u32 board_id; | |
260 | char *product_name; | |
261 | struct access_method *access; | |
262 | }; | |
263 | ||
ad2b9312 | 264 | #define CCISS_LOCK(i) (&hba[i]->lock) |
1da177e4 LT |
265 | |
266 | #endif /* CCISS_H */ | |
267 |