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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#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
Linus Torvalds1da177e2005-04-16 15:20:36 -070016struct ctlr_info;
17typedef struct ctlr_info ctlr_info_t;
18
19struct access_method {
20 void (*submit_command)(ctlr_info_t *h, CommandList_struct *c);
21 void (*set_intr_mask)(ctlr_info_t *h, unsigned long val);
22 unsigned long (*fifo_full)(ctlr_info_t *h);
23 unsigned long (*intr_pending)(ctlr_info_t *h);
24 unsigned long (*command_completed)(ctlr_info_t *h);
25};
26typedef struct _drive_info_struct
27{
28 __u32 LunID;
29 int usage_count;
Mike Millerad2b9312005-07-28 01:07:31 -070030 struct request_queue *queue;
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 sector_t nr_blocks;
32 int block_size;
33 int heads;
34 int sectors;
35 int cylinders;
Mike Millerddd47442005-09-13 01:25:22 -070036 int raid_level; /* set to -1 to indicate that
37 * the drive is not in use/configured
38 */
39 int busy_configuring; /*This is set when the drive is being removed
40 *to prevent it from being opened or it's queue
41 *from being started.
42 */
Linus Torvalds1da177e2005-04-16 15:20:36 -070043} drive_info_struct;
44
mike.miller@hp.com3da8b712005-11-04 12:30:37 -060045#ifdef CONFIG_CISS_SCSI_TAPE
46
47struct sendcmd_reject_list {
48 int ncompletions;
49 unsigned long *complete; /* array of NR_CMDS tags */
50};
51
52#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -070053struct ctlr_info
54{
55 int ctlr;
56 char devname[8];
57 char *product_name;
58 char firm_ver[4]; // Firmware version
59 struct pci_dev *pdev;
60 __u32 board_id;
61 void __iomem *vaddr;
62 unsigned long paddr;
63 unsigned long io_mem_addr;
64 unsigned long io_mem_length;
65 CfgTable_struct __iomem *cfgtable;
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 int interrupts_enabled;
67 int major;
68 int max_commands;
69 int commands_outstanding;
70 int max_outstanding; /* Debug */
71 int num_luns;
72 int highest_lun;
73 int usage_count; /* number of opens all all minor devices */
Mike Millerfb86a352006-01-08 01:03:50 -080074# define DOORBELL_INT 0
75# define PERF_MODE_INT 1
76# define SIMPLE_MODE_INT 2
77# define MEMQ_MODE_INT 3
78 unsigned int intr[4];
79 unsigned int msix_vector;
80 unsigned int msi_vector;
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
82 // information about each logical volume
83 drive_info_struct drv[CISS_MAX_LUN];
84
85 struct access_method access;
86
87 /* queue and queue Info */
88 CommandList_struct *reqQ;
89 CommandList_struct *cmpQ;
90 unsigned int Qdepth;
91 unsigned int maxQsinceinit;
92 unsigned int maxSG;
93 spinlock_t lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094
95 //* pointers to command and error info pool */
96 CommandList_struct *cmd_pool;
97 dma_addr_t cmd_pool_dhandle;
98 ErrorInfo_struct *errinfo_pool;
99 dma_addr_t errinfo_pool_dhandle;
100 unsigned long *cmd_pool_bits;
101 int nr_allocs;
102 int nr_frees;
103 int busy_configuring;
Mike Miller1f8ef382005-09-13 01:25:21 -0700104 int busy_initializing;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105
106 /* This element holds the zero based queue number of the last
107 * queue to be started. It is used for fairness.
108 */
109 int next_to_run;
110
111 // Disk structures we need to pass back
112 struct gendisk *gendisk[NWD];
113#ifdef CONFIG_CISS_SCSI_TAPE
114 void *scsi_ctlr; /* ptr to structure containing scsi related stuff */
mike.miller@hp.com3da8b712005-11-04 12:30:37 -0600115 /* list of block side commands the scsi error handling sucked up */
116 /* and saved for later processing */
117 struct sendcmd_reject_list scsi_rejects;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118#endif
Mike Miller33079b22005-09-13 01:25:22 -0700119 unsigned char alive;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120};
121
122/* Defining the diffent access_menthods */
123/*
124 * Memory mapped FIFO interface (SMART 53xx cards)
125 */
126#define SA5_DOORBELL 0x20
127#define SA5_REQUEST_PORT_OFFSET 0x40
128#define SA5_REPLY_INTR_MASK_OFFSET 0x34
129#define SA5_REPLY_PORT_OFFSET 0x44
130#define SA5_INTR_STATUS 0x30
131#define SA5_SCRATCHPAD_OFFSET 0xB0
132
133#define SA5_CTCFG_OFFSET 0xB4
134#define SA5_CTMEM_OFFSET 0xB8
135
136#define SA5_INTR_OFF 0x08
137#define SA5B_INTR_OFF 0x04
138#define SA5_INTR_PENDING 0x08
139#define SA5B_INTR_PENDING 0x04
140#define FIFO_EMPTY 0xffffffff
141#define CCISS_FIRMWARE_READY 0xffff0000 /* value in scratchpad register */
142
143#define CISS_ERROR_BIT 0x02
144
145#define CCISS_INTR_ON 1
146#define CCISS_INTR_OFF 0
147/*
148 Send the command to the hardware
149*/
150static void SA5_submit_command( ctlr_info_t *h, CommandList_struct *c)
151{
152#ifdef CCISS_DEBUG
153 printk("Sending %x - down to controller\n", c->busaddr );
154#endif /* CCISS_DEBUG */
155 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
156 h->commands_outstanding++;
157 if ( h->commands_outstanding > h->max_outstanding)
158 h->max_outstanding = h->commands_outstanding;
159}
160
161/*
162 * This card is the opposite of the other cards.
163 * 0 turns interrupts on...
164 * 0x08 turns them off...
165 */
166static void SA5_intr_mask(ctlr_info_t *h, unsigned long val)
167{
168 if (val)
169 { /* Turn interrupts on */
170 h->interrupts_enabled = 1;
171 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
172 } else /* Turn them off */
173 {
174 h->interrupts_enabled = 0;
175 writel( SA5_INTR_OFF,
176 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
177 }
178}
179/*
180 * This card is the opposite of the other cards.
181 * 0 turns interrupts on...
182 * 0x04 turns them off...
183 */
184static void SA5B_intr_mask(ctlr_info_t *h, unsigned long val)
185{
186 if (val)
187 { /* Turn interrupts on */
188 h->interrupts_enabled = 1;
189 writel(0, h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
190 } else /* Turn them off */
191 {
192 h->interrupts_enabled = 0;
193 writel( SA5B_INTR_OFF,
194 h->vaddr + SA5_REPLY_INTR_MASK_OFFSET);
195 }
196}
197/*
198 * Returns true if fifo is full.
199 *
200 */
201static unsigned long SA5_fifo_full(ctlr_info_t *h)
202{
203 if( h->commands_outstanding >= h->max_commands)
204 return(1);
205 else
206 return(0);
207
208}
209/*
210 * returns value read from hardware.
211 * returns FIFO_EMPTY if there is nothing to read
212 */
213static unsigned long SA5_completed(ctlr_info_t *h)
214{
215 unsigned long register_value
216 = readl(h->vaddr + SA5_REPLY_PORT_OFFSET);
217 if(register_value != FIFO_EMPTY)
218 {
219 h->commands_outstanding--;
220#ifdef CCISS_DEBUG
221 printk("cciss: Read %lx back from board\n", register_value);
222#endif /* CCISS_DEBUG */
223 }
224#ifdef CCISS_DEBUG
225 else
226 {
227 printk("cciss: FIFO Empty read\n");
228 }
229#endif
230 return ( register_value);
231
232}
233/*
234 * Returns true if an interrupt is pending..
235 */
236static unsigned long SA5_intr_pending(ctlr_info_t *h)
237{
238 unsigned long register_value =
239 readl(h->vaddr + SA5_INTR_STATUS);
240#ifdef CCISS_DEBUG
241 printk("cciss: intr_pending %lx\n", register_value);
242#endif /* CCISS_DEBUG */
243 if( register_value & SA5_INTR_PENDING)
244 return 1;
245 return 0 ;
246}
247
248/*
249 * Returns true if an interrupt is pending..
250 */
251static unsigned long SA5B_intr_pending(ctlr_info_t *h)
252{
253 unsigned long register_value =
254 readl(h->vaddr + SA5_INTR_STATUS);
255#ifdef CCISS_DEBUG
256 printk("cciss: intr_pending %lx\n", register_value);
257#endif /* CCISS_DEBUG */
258 if( register_value & SA5B_INTR_PENDING)
259 return 1;
260 return 0 ;
261}
262
263
264static struct access_method SA5_access = {
265 SA5_submit_command,
266 SA5_intr_mask,
267 SA5_fifo_full,
268 SA5_intr_pending,
269 SA5_completed,
270};
271
272static struct access_method SA5B_access = {
273 SA5_submit_command,
274 SA5B_intr_mask,
275 SA5_fifo_full,
276 SA5B_intr_pending,
277 SA5_completed,
278};
279
280struct board_type {
281 __u32 board_id;
282 char *product_name;
283 struct access_method *access;
284};
285
Mike Millerad2b9312005-07-28 01:07:31 -0700286#define CCISS_LOCK(i) (&hba[i]->lock)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287
288#endif /* CCISS_H */
289