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8#include "ql4_def.h"
9#include "ql4_glbl.h"
10#include "ql4_dbg.h"
11#include "ql4_inline.h"
12
13static inline void eeprom_cmd(uint32_t cmd, struct scsi_qla_host *ha)
14{
15 writel(cmd, isp_nvram(ha));
16 readl(isp_nvram(ha));
17 udelay(1);
18}
19
20static inline int eeprom_size(struct scsi_qla_host *ha)
21{
22 return is_qla4010(ha) ? FM93C66A_SIZE_16 : FM93C86A_SIZE_16;
23}
24
25static inline int eeprom_no_addr_bits(struct scsi_qla_host *ha)
26{
27 return is_qla4010(ha) ? FM93C56A_NO_ADDR_BITS_16 :
28 FM93C86A_NO_ADDR_BITS_16 ;
29}
30
31static inline int eeprom_no_data_bits(struct scsi_qla_host *ha)
32{
33 return FM93C56A_DATA_BITS_16;
34}
35
36static int fm93c56a_select(struct scsi_qla_host * ha)
37{
38 DEBUG5(printk(KERN_ERR "fm93c56a_select:\n"));
39
40 ha->eeprom_cmd_data = AUBURN_EEPROM_CS_1 | 0x000f0000;
41 eeprom_cmd(ha->eeprom_cmd_data, ha);
42 return 1;
43}
44
45static int fm93c56a_cmd(struct scsi_qla_host * ha, int cmd, int addr)
46{
47 int i;
48 int mask;
49 int dataBit;
50 int previousBit;
51
52
53 eeprom_cmd(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1, ha);
54
55 eeprom_cmd(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1 |
56 AUBURN_EEPROM_CLK_RISE, ha);
57 eeprom_cmd(ha->eeprom_cmd_data | AUBURN_EEPROM_DO_1 |
58 AUBURN_EEPROM_CLK_FALL, ha);
59
60 mask = 1 << (FM93C56A_CMD_BITS - 1);
61
62
63 previousBit = 0xffff;
64 for (i = 0; i < FM93C56A_CMD_BITS; i++) {
65 dataBit =
66 (cmd & mask) ? AUBURN_EEPROM_DO_1 : AUBURN_EEPROM_DO_0;
67 if (previousBit != dataBit) {
68
69
70
71
72
73 eeprom_cmd(ha->eeprom_cmd_data | dataBit, ha);
74 previousBit = dataBit;
75 }
76 eeprom_cmd(ha->eeprom_cmd_data | dataBit |
77 AUBURN_EEPROM_CLK_RISE, ha);
78 eeprom_cmd(ha->eeprom_cmd_data | dataBit |
79 AUBURN_EEPROM_CLK_FALL, ha);
80
81 cmd = cmd << 1;
82 }
83 mask = 1 << (eeprom_no_addr_bits(ha) - 1);
84
85
86 previousBit = 0xffff;
87 for (i = 0; i < eeprom_no_addr_bits(ha); i++) {
88 dataBit = addr & mask ? AUBURN_EEPROM_DO_1 :
89 AUBURN_EEPROM_DO_0;
90 if (previousBit != dataBit) {
91
92
93
94
95 eeprom_cmd(ha->eeprom_cmd_data | dataBit, ha);
96
97 previousBit = dataBit;
98 }
99 eeprom_cmd(ha->eeprom_cmd_data | dataBit |
100 AUBURN_EEPROM_CLK_RISE, ha);
101 eeprom_cmd(ha->eeprom_cmd_data | dataBit |
102 AUBURN_EEPROM_CLK_FALL, ha);
103
104 addr = addr << 1;
105 }
106 return 1;
107}
108
109static int fm93c56a_deselect(struct scsi_qla_host * ha)
110{
111 ha->eeprom_cmd_data = AUBURN_EEPROM_CS_0 | 0x000f0000;
112 eeprom_cmd(ha->eeprom_cmd_data, ha);
113 return 1;
114}
115
116static int fm93c56a_datain(struct scsi_qla_host * ha, unsigned short *value)
117{
118 int i;
119 int data = 0;
120 int dataBit;
121
122
123
124 for (i = 0; i < eeprom_no_data_bits(ha); i++) {
125 eeprom_cmd(ha->eeprom_cmd_data |
126 AUBURN_EEPROM_CLK_RISE, ha);
127 eeprom_cmd(ha->eeprom_cmd_data |
128 AUBURN_EEPROM_CLK_FALL, ha);
129
130 dataBit = (readw(isp_nvram(ha)) & AUBURN_EEPROM_DI_1) ? 1 : 0;
131
132 data = (data << 1) | dataBit;
133 }
134
135 *value = data;
136 return 1;
137}
138
139static int eeprom_readword(int eepromAddr, u16 * value,
140 struct scsi_qla_host * ha)
141{
142 fm93c56a_select(ha);
143 fm93c56a_cmd(ha, FM93C56A_READ, eepromAddr);
144 fm93c56a_datain(ha, value);
145 fm93c56a_deselect(ha);
146 return 1;
147}
148
149
150u16 rd_nvram_word(struct scsi_qla_host * ha, int offset)
151{
152 u16 val = 0;
153
154
155 eeprom_readword(offset, &val, ha);
156 return val;
157}
158
159u8 rd_nvram_byte(struct scsi_qla_host *ha, int offset)
160{
161 u16 val = 0;
162 u8 rval = 0;
163 int index = 0;
164
165 if (offset & 0x1)
166 index = (offset - 1) / 2;
167 else
168 index = offset / 2;
169
170 val = le16_to_cpu(rd_nvram_word(ha, index));
171
172 if (offset & 0x1)
173 rval = (u8)((val & 0xff00) >> 8);
174 else
175 rval = (u8)((val & 0x00ff));
176
177 return rval;
178}
179
180int qla4xxx_is_nvram_configuration_valid(struct scsi_qla_host * ha)
181{
182 int status = QLA_ERROR;
183 uint16_t checksum = 0;
184 uint32_t index;
185 unsigned long flags;
186
187 spin_lock_irqsave(&ha->hardware_lock, flags);
188 for (index = 0; index < eeprom_size(ha); index++)
189 checksum += rd_nvram_word(ha, index);
190 spin_unlock_irqrestore(&ha->hardware_lock, flags);
191
192 if (checksum == 0)
193 status = QLA_SUCCESS;
194
195 return status;
196}
197
198
199
200
201
202
203int ql4xxx_sem_spinlock(struct scsi_qla_host * ha, u32 sem_mask, u32 sem_bits)
204{
205 uint32_t value;
206 unsigned long flags;
207 unsigned int seconds = 30;
208
209 DEBUG2(printk("scsi%ld : Trying to get SEM lock - mask= 0x%x, code = "
210 "0x%x\n", ha->host_no, sem_mask, sem_bits));
211 do {
212 spin_lock_irqsave(&ha->hardware_lock, flags);
213 writel((sem_mask | sem_bits), isp_semaphore(ha));
214 value = readw(isp_semaphore(ha));
215 spin_unlock_irqrestore(&ha->hardware_lock, flags);
216 if ((value & (sem_mask >> 16)) == sem_bits) {
217 DEBUG2(printk("scsi%ld : Got SEM LOCK - mask= 0x%x, "
218 "code = 0x%x\n", ha->host_no,
219 sem_mask, sem_bits));
220 return QLA_SUCCESS;
221 }
222 ssleep(1);
223 } while (--seconds);
224 return QLA_ERROR;
225}
226
227void ql4xxx_sem_unlock(struct scsi_qla_host * ha, u32 sem_mask)
228{
229 unsigned long flags;
230
231 spin_lock_irqsave(&ha->hardware_lock, flags);
232 writel(sem_mask, isp_semaphore(ha));
233 readl(isp_semaphore(ha));
234 spin_unlock_irqrestore(&ha->hardware_lock, flags);
235
236 DEBUG2(printk("scsi%ld : UNLOCK SEM - mask= 0x%x\n", ha->host_no,
237 sem_mask));
238}
239
240int ql4xxx_sem_lock(struct scsi_qla_host * ha, u32 sem_mask, u32 sem_bits)
241{
242 uint32_t value;
243 unsigned long flags;
244
245 spin_lock_irqsave(&ha->hardware_lock, flags);
246 writel((sem_mask | sem_bits), isp_semaphore(ha));
247 value = readw(isp_semaphore(ha));
248 spin_unlock_irqrestore(&ha->hardware_lock, flags);
249 if ((value & (sem_mask >> 16)) == sem_bits) {
250 DEBUG2(printk("scsi%ld : Got SEM LOCK - mask= 0x%x, code = "
251 "0x%x, sema code=0x%x\n", ha->host_no,
252 sem_mask, sem_bits, value));
253 return 1;
254 }
255 return 0;
256}
257
