Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Sonics Silicon Backplane |
| 3 | * PCMCIA-Hostbus related functions |
| 4 | * |
| 5 | * Copyright 2006 Johannes Berg <johannes@sipsolutions.net> |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 6 | * Copyright 2007-2008 Michael Buesch <mb@bu3sch.de> |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 7 | * |
| 8 | * Licensed under the GNU/GPL. See COPYING for details. |
| 9 | */ |
| 10 | |
| 11 | #include <linux/ssb/ssb.h> |
| 12 | #include <linux/delay.h> |
Al Viro | 409f243 | 2007-10-14 05:51:51 +0100 | [diff] [blame] | 13 | #include <linux/io.h> |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 14 | #include <linux/etherdevice.h> |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 15 | |
| 16 | #include <pcmcia/cs_types.h> |
| 17 | #include <pcmcia/cs.h> |
| 18 | #include <pcmcia/cistpl.h> |
| 19 | #include <pcmcia/ciscode.h> |
| 20 | #include <pcmcia/ds.h> |
| 21 | #include <pcmcia/cisreg.h> |
| 22 | |
| 23 | #include "ssb_private.h" |
| 24 | |
| 25 | |
| 26 | /* Define the following to 1 to enable a printk on each coreswitch. */ |
| 27 | #define SSB_VERBOSE_PCMCIACORESWITCH_DEBUG 0 |
| 28 | |
| 29 | |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 30 | /* PCMCIA configuration registers */ |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 31 | #define SSB_PCMCIA_ADDRESS0 0x2E |
| 32 | #define SSB_PCMCIA_ADDRESS1 0x30 |
| 33 | #define SSB_PCMCIA_ADDRESS2 0x32 |
| 34 | #define SSB_PCMCIA_MEMSEG 0x34 |
| 35 | #define SSB_PCMCIA_SPROMCTL 0x36 |
| 36 | #define SSB_PCMCIA_SPROMCTL_IDLE 0 |
| 37 | #define SSB_PCMCIA_SPROMCTL_WRITE 1 |
| 38 | #define SSB_PCMCIA_SPROMCTL_READ 2 |
| 39 | #define SSB_PCMCIA_SPROMCTL_WRITEEN 4 |
| 40 | #define SSB_PCMCIA_SPROMCTL_WRITEDIS 7 |
| 41 | #define SSB_PCMCIA_SPROMCTL_DONE 8 |
| 42 | #define SSB_PCMCIA_SPROM_DATALO 0x38 |
| 43 | #define SSB_PCMCIA_SPROM_DATAHI 0x3A |
| 44 | #define SSB_PCMCIA_SPROM_ADDRLO 0x3C |
| 45 | #define SSB_PCMCIA_SPROM_ADDRHI 0x3E |
| 46 | |
| 47 | /* Hardware invariants CIS tuples */ |
| 48 | #define SSB_PCMCIA_CIS 0x80 |
| 49 | #define SSB_PCMCIA_CIS_ID 0x01 |
| 50 | #define SSB_PCMCIA_CIS_BOARDREV 0x02 |
| 51 | #define SSB_PCMCIA_CIS_PA 0x03 |
| 52 | #define SSB_PCMCIA_CIS_PA_PA0B0_LO 0 |
| 53 | #define SSB_PCMCIA_CIS_PA_PA0B0_HI 1 |
| 54 | #define SSB_PCMCIA_CIS_PA_PA0B1_LO 2 |
| 55 | #define SSB_PCMCIA_CIS_PA_PA0B1_HI 3 |
| 56 | #define SSB_PCMCIA_CIS_PA_PA0B2_LO 4 |
| 57 | #define SSB_PCMCIA_CIS_PA_PA0B2_HI 5 |
| 58 | #define SSB_PCMCIA_CIS_PA_ITSSI 6 |
| 59 | #define SSB_PCMCIA_CIS_PA_MAXPOW 7 |
| 60 | #define SSB_PCMCIA_CIS_OEMNAME 0x04 |
| 61 | #define SSB_PCMCIA_CIS_CCODE 0x05 |
| 62 | #define SSB_PCMCIA_CIS_ANTENNA 0x06 |
| 63 | #define SSB_PCMCIA_CIS_ANTGAIN 0x07 |
| 64 | #define SSB_PCMCIA_CIS_BFLAGS 0x08 |
| 65 | #define SSB_PCMCIA_CIS_LEDS 0x09 |
| 66 | |
| 67 | /* PCMCIA SPROM size. */ |
| 68 | #define SSB_PCMCIA_SPROM_SIZE 256 |
| 69 | #define SSB_PCMCIA_SPROM_SIZE_BYTES (SSB_PCMCIA_SPROM_SIZE * sizeof(u16)) |
| 70 | |
| 71 | |
| 72 | /* Write to a PCMCIA configuration register. */ |
| 73 | static int ssb_pcmcia_cfg_write(struct ssb_bus *bus, u8 offset, u8 value) |
| 74 | { |
| 75 | conf_reg_t reg; |
| 76 | int res; |
| 77 | |
| 78 | memset(®, 0, sizeof(reg)); |
| 79 | reg.Offset = offset; |
| 80 | reg.Action = CS_WRITE; |
| 81 | reg.Value = value; |
| 82 | res = pcmcia_access_configuration_register(bus->host_pcmcia, ®); |
| 83 | if (unlikely(res != CS_SUCCESS)) |
| 84 | return -EBUSY; |
| 85 | |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | /* Read from a PCMCIA configuration register. */ |
| 90 | static int ssb_pcmcia_cfg_read(struct ssb_bus *bus, u8 offset, u8 *value) |
| 91 | { |
| 92 | conf_reg_t reg; |
| 93 | int res; |
| 94 | |
| 95 | memset(®, 0, sizeof(reg)); |
| 96 | reg.Offset = offset; |
| 97 | reg.Action = CS_READ; |
| 98 | res = pcmcia_access_configuration_register(bus->host_pcmcia, ®); |
| 99 | if (unlikely(res != CS_SUCCESS)) |
| 100 | return -EBUSY; |
| 101 | *value = reg.Value; |
| 102 | |
| 103 | return 0; |
| 104 | } |
| 105 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 106 | int ssb_pcmcia_switch_coreidx(struct ssb_bus *bus, |
| 107 | u8 coreidx) |
| 108 | { |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 109 | int err; |
| 110 | int attempts = 0; |
| 111 | u32 cur_core; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 112 | u32 addr; |
| 113 | u32 read_addr; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 114 | u8 val; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 115 | |
| 116 | addr = (coreidx * SSB_CORE_SIZE) + SSB_ENUM_BASE; |
| 117 | while (1) { |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 118 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS0, |
| 119 | (addr & 0x0000F000) >> 12); |
| 120 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 121 | goto error; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 122 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS1, |
| 123 | (addr & 0x00FF0000) >> 16); |
| 124 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 125 | goto error; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 126 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_ADDRESS2, |
| 127 | (addr & 0xFF000000) >> 24); |
| 128 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 129 | goto error; |
| 130 | |
| 131 | read_addr = 0; |
| 132 | |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 133 | err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS0, &val); |
| 134 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 135 | goto error; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 136 | read_addr |= ((u32)(val & 0x0F)) << 12; |
| 137 | err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS1, &val); |
| 138 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 139 | goto error; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 140 | read_addr |= ((u32)val) << 16; |
| 141 | err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_ADDRESS2, &val); |
| 142 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 143 | goto error; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 144 | read_addr |= ((u32)val) << 24; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 145 | |
| 146 | cur_core = (read_addr - SSB_ENUM_BASE) / SSB_CORE_SIZE; |
| 147 | if (cur_core == coreidx) |
| 148 | break; |
| 149 | |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 150 | err = -ETIMEDOUT; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 151 | if (attempts++ > SSB_BAR0_MAX_RETRIES) |
| 152 | goto error; |
| 153 | udelay(10); |
| 154 | } |
| 155 | |
| 156 | return 0; |
| 157 | error: |
| 158 | ssb_printk(KERN_ERR PFX "Failed to switch to core %u\n", coreidx); |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 159 | return err; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | int ssb_pcmcia_switch_core(struct ssb_bus *bus, |
| 163 | struct ssb_device *dev) |
| 164 | { |
| 165 | int err; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 166 | |
| 167 | #if SSB_VERBOSE_PCMCIACORESWITCH_DEBUG |
| 168 | ssb_printk(KERN_INFO PFX |
| 169 | "Switching to %s core, index %d\n", |
| 170 | ssb_core_name(dev->id.coreid), |
| 171 | dev->core_index); |
| 172 | #endif |
| 173 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 174 | err = ssb_pcmcia_switch_coreidx(bus, dev->core_index); |
| 175 | if (!err) |
| 176 | bus->mapped_device = dev; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 177 | |
| 178 | return err; |
| 179 | } |
| 180 | |
| 181 | int ssb_pcmcia_switch_segment(struct ssb_bus *bus, u8 seg) |
| 182 | { |
| 183 | int attempts = 0; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 184 | int err; |
| 185 | u8 val; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 186 | |
| 187 | SSB_WARN_ON((seg != 0) && (seg != 1)); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 188 | while (1) { |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 189 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_MEMSEG, seg); |
| 190 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 191 | goto error; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 192 | err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_MEMSEG, &val); |
| 193 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 194 | goto error; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 195 | if (val == seg) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 196 | break; |
| 197 | |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 198 | err = -ETIMEDOUT; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 199 | if (unlikely(attempts++ > SSB_BAR0_MAX_RETRIES)) |
| 200 | goto error; |
| 201 | udelay(10); |
| 202 | } |
| 203 | bus->mapped_pcmcia_seg = seg; |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 204 | |
| 205 | return 0; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 206 | error: |
| 207 | ssb_printk(KERN_ERR PFX "Failed to switch pcmcia segment\n"); |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 208 | return err; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 209 | } |
| 210 | |
Michael Buesch | 60d78c4 | 2007-11-07 19:03:35 +0100 | [diff] [blame] | 211 | static int select_core_and_segment(struct ssb_device *dev, |
| 212 | u16 *offset) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 213 | { |
Michael Buesch | 60d78c4 | 2007-11-07 19:03:35 +0100 | [diff] [blame] | 214 | struct ssb_bus *bus = dev->bus; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 215 | int err; |
Michael Buesch | 60d78c4 | 2007-11-07 19:03:35 +0100 | [diff] [blame] | 216 | u8 need_segment; |
| 217 | |
| 218 | if (*offset >= 0x800) { |
| 219 | *offset -= 0x800; |
| 220 | need_segment = 1; |
| 221 | } else |
| 222 | need_segment = 0; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 223 | |
| 224 | if (unlikely(dev != bus->mapped_device)) { |
| 225 | err = ssb_pcmcia_switch_core(bus, dev); |
| 226 | if (unlikely(err)) |
| 227 | return err; |
| 228 | } |
Michael Buesch | 60d78c4 | 2007-11-07 19:03:35 +0100 | [diff] [blame] | 229 | if (unlikely(need_segment != bus->mapped_pcmcia_seg)) { |
| 230 | err = ssb_pcmcia_switch_segment(bus, need_segment); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 231 | if (unlikely(err)) |
| 232 | return err; |
| 233 | } |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 234 | |
| 235 | return 0; |
| 236 | } |
| 237 | |
Michael Buesch | ffc7689 | 2008-02-20 19:08:10 +0100 | [diff] [blame] | 238 | static u8 ssb_pcmcia_read8(struct ssb_device *dev, u16 offset) |
| 239 | { |
| 240 | struct ssb_bus *bus = dev->bus; |
| 241 | unsigned long flags; |
| 242 | int err; |
| 243 | u8 value = 0xFF; |
| 244 | |
| 245 | spin_lock_irqsave(&bus->bar_lock, flags); |
| 246 | err = select_core_and_segment(dev, &offset); |
| 247 | if (likely(!err)) |
| 248 | value = readb(bus->mmio + offset); |
| 249 | spin_unlock_irqrestore(&bus->bar_lock, flags); |
| 250 | |
| 251 | return value; |
| 252 | } |
| 253 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 254 | static u16 ssb_pcmcia_read16(struct ssb_device *dev, u16 offset) |
| 255 | { |
| 256 | struct ssb_bus *bus = dev->bus; |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 257 | unsigned long flags; |
| 258 | int err; |
| 259 | u16 value = 0xFFFF; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 260 | |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 261 | spin_lock_irqsave(&bus->bar_lock, flags); |
| 262 | err = select_core_and_segment(dev, &offset); |
| 263 | if (likely(!err)) |
| 264 | value = readw(bus->mmio + offset); |
| 265 | spin_unlock_irqrestore(&bus->bar_lock, flags); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 266 | |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 267 | return value; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | static u32 ssb_pcmcia_read32(struct ssb_device *dev, u16 offset) |
| 271 | { |
| 272 | struct ssb_bus *bus = dev->bus; |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 273 | unsigned long flags; |
| 274 | int err; |
| 275 | u32 lo = 0xFFFFFFFF, hi = 0xFFFFFFFF; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 276 | |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 277 | spin_lock_irqsave(&bus->bar_lock, flags); |
| 278 | err = select_core_and_segment(dev, &offset); |
| 279 | if (likely(!err)) { |
| 280 | lo = readw(bus->mmio + offset); |
| 281 | hi = readw(bus->mmio + offset + 2); |
| 282 | } |
| 283 | spin_unlock_irqrestore(&bus->bar_lock, flags); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 284 | |
Michael Buesch | 60d78c4 | 2007-11-07 19:03:35 +0100 | [diff] [blame] | 285 | return (lo | (hi << 16)); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 286 | } |
| 287 | |
Michael Buesch | ffc7689 | 2008-02-20 19:08:10 +0100 | [diff] [blame] | 288 | static void ssb_pcmcia_write8(struct ssb_device *dev, u16 offset, u8 value) |
| 289 | { |
| 290 | struct ssb_bus *bus = dev->bus; |
| 291 | unsigned long flags; |
| 292 | int err; |
| 293 | |
| 294 | spin_lock_irqsave(&bus->bar_lock, flags); |
| 295 | err = select_core_and_segment(dev, &offset); |
| 296 | if (likely(!err)) |
| 297 | writeb(value, bus->mmio + offset); |
| 298 | mmiowb(); |
| 299 | spin_unlock_irqrestore(&bus->bar_lock, flags); |
| 300 | } |
| 301 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 302 | static void ssb_pcmcia_write16(struct ssb_device *dev, u16 offset, u16 value) |
| 303 | { |
| 304 | struct ssb_bus *bus = dev->bus; |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 305 | unsigned long flags; |
| 306 | int err; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 307 | |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 308 | spin_lock_irqsave(&bus->bar_lock, flags); |
| 309 | err = select_core_and_segment(dev, &offset); |
| 310 | if (likely(!err)) |
| 311 | writew(value, bus->mmio + offset); |
| 312 | mmiowb(); |
| 313 | spin_unlock_irqrestore(&bus->bar_lock, flags); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | static void ssb_pcmcia_write32(struct ssb_device *dev, u16 offset, u32 value) |
| 317 | { |
| 318 | struct ssb_bus *bus = dev->bus; |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 319 | unsigned long flags; |
| 320 | int err; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 321 | |
Michael Buesch | 993e1c7 | 2007-12-22 22:01:36 +0100 | [diff] [blame] | 322 | spin_lock_irqsave(&bus->bar_lock, flags); |
| 323 | err = select_core_and_segment(dev, &offset); |
| 324 | if (likely(!err)) { |
| 325 | writew((value & 0x0000FFFF), bus->mmio + offset); |
| 326 | writew(((value & 0xFFFF0000) >> 16), bus->mmio + offset + 2); |
| 327 | } |
| 328 | mmiowb(); |
| 329 | spin_unlock_irqrestore(&bus->bar_lock, flags); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | /* Not "static", as it's used in main.c */ |
| 333 | const struct ssb_bus_ops ssb_pcmcia_ops = { |
Michael Buesch | ffc7689 | 2008-02-20 19:08:10 +0100 | [diff] [blame] | 334 | .read8 = ssb_pcmcia_read8, |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 335 | .read16 = ssb_pcmcia_read16, |
| 336 | .read32 = ssb_pcmcia_read32, |
Michael Buesch | ffc7689 | 2008-02-20 19:08:10 +0100 | [diff] [blame] | 337 | .write8 = ssb_pcmcia_write8, |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 338 | .write16 = ssb_pcmcia_write16, |
| 339 | .write32 = ssb_pcmcia_write32, |
| 340 | }; |
| 341 | |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 342 | static int ssb_pcmcia_sprom_command(struct ssb_bus *bus, u8 command) |
| 343 | { |
| 344 | unsigned int i; |
| 345 | int err; |
| 346 | u8 value; |
| 347 | |
| 348 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROMCTL, command); |
| 349 | if (err) |
| 350 | return err; |
| 351 | for (i = 0; i < 1000; i++) { |
| 352 | err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROMCTL, &value); |
| 353 | if (err) |
| 354 | return err; |
| 355 | if (value & SSB_PCMCIA_SPROMCTL_DONE) |
| 356 | return 0; |
| 357 | udelay(10); |
| 358 | } |
| 359 | |
| 360 | return -ETIMEDOUT; |
| 361 | } |
| 362 | |
| 363 | /* offset is the 16bit word offset */ |
| 364 | static int ssb_pcmcia_sprom_read(struct ssb_bus *bus, u16 offset, u16 *value) |
| 365 | { |
| 366 | int err; |
| 367 | u8 lo, hi; |
| 368 | |
| 369 | offset *= 2; /* Make byte offset */ |
| 370 | |
| 371 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO, |
| 372 | (offset & 0x00FF)); |
| 373 | if (err) |
| 374 | return err; |
| 375 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI, |
| 376 | (offset & 0xFF00) >> 8); |
| 377 | if (err) |
| 378 | return err; |
| 379 | err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_READ); |
| 380 | if (err) |
| 381 | return err; |
| 382 | err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATALO, &lo); |
| 383 | if (err) |
| 384 | return err; |
| 385 | err = ssb_pcmcia_cfg_read(bus, SSB_PCMCIA_SPROM_DATAHI, &hi); |
| 386 | if (err) |
| 387 | return err; |
| 388 | *value = (lo | (((u16)hi) << 8)); |
| 389 | |
| 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | /* offset is the 16bit word offset */ |
| 394 | static int ssb_pcmcia_sprom_write(struct ssb_bus *bus, u16 offset, u16 value) |
| 395 | { |
| 396 | int err; |
| 397 | |
| 398 | offset *= 2; /* Make byte offset */ |
| 399 | |
| 400 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRLO, |
| 401 | (offset & 0x00FF)); |
| 402 | if (err) |
| 403 | return err; |
| 404 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_ADDRHI, |
| 405 | (offset & 0xFF00) >> 8); |
| 406 | if (err) |
| 407 | return err; |
| 408 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATALO, |
| 409 | (value & 0x00FF)); |
| 410 | if (err) |
| 411 | return err; |
| 412 | err = ssb_pcmcia_cfg_write(bus, SSB_PCMCIA_SPROM_DATAHI, |
| 413 | (value & 0xFF00) >> 8); |
| 414 | if (err) |
| 415 | return err; |
| 416 | err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITE); |
| 417 | if (err) |
| 418 | return err; |
| 419 | msleep(20); |
| 420 | |
| 421 | return 0; |
| 422 | } |
| 423 | |
| 424 | /* Read the SPROM image. bufsize is in 16bit words. */ |
| 425 | static int ssb_pcmcia_sprom_read_all(struct ssb_bus *bus, u16 *sprom) |
| 426 | { |
| 427 | int err, i; |
| 428 | |
| 429 | for (i = 0; i < SSB_PCMCIA_SPROM_SIZE; i++) { |
| 430 | err = ssb_pcmcia_sprom_read(bus, i, &sprom[i]); |
| 431 | if (err) |
| 432 | return err; |
| 433 | } |
| 434 | |
| 435 | return 0; |
| 436 | } |
| 437 | |
| 438 | /* Write the SPROM image. size is in 16bit words. */ |
| 439 | static int ssb_pcmcia_sprom_write_all(struct ssb_bus *bus, const u16 *sprom) |
| 440 | { |
| 441 | int i, err; |
| 442 | bool failed = 0; |
| 443 | size_t size = SSB_PCMCIA_SPROM_SIZE; |
| 444 | |
| 445 | ssb_printk(KERN_NOTICE PFX |
| 446 | "Writing SPROM. Do NOT turn off the power! " |
| 447 | "Please stand by...\n"); |
| 448 | err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEEN); |
| 449 | if (err) { |
| 450 | ssb_printk(KERN_NOTICE PFX |
| 451 | "Could not enable SPROM write access.\n"); |
| 452 | return -EBUSY; |
| 453 | } |
| 454 | ssb_printk(KERN_NOTICE PFX "[ 0%%"); |
| 455 | msleep(500); |
| 456 | for (i = 0; i < size; i++) { |
| 457 | if (i == size / 4) |
| 458 | ssb_printk("25%%"); |
| 459 | else if (i == size / 2) |
| 460 | ssb_printk("50%%"); |
| 461 | else if (i == (size * 3) / 4) |
| 462 | ssb_printk("75%%"); |
| 463 | else if (i % 2) |
| 464 | ssb_printk("."); |
| 465 | err = ssb_pcmcia_sprom_write(bus, i, sprom[i]); |
| 466 | if (err) { |
| 467 | ssb_printk("\n" KERN_NOTICE PFX |
| 468 | "Failed to write to SPROM.\n"); |
| 469 | failed = 1; |
| 470 | break; |
| 471 | } |
| 472 | } |
| 473 | err = ssb_pcmcia_sprom_command(bus, SSB_PCMCIA_SPROMCTL_WRITEDIS); |
| 474 | if (err) { |
| 475 | ssb_printk("\n" KERN_NOTICE PFX |
| 476 | "Could not disable SPROM write access.\n"); |
| 477 | failed = 1; |
| 478 | } |
| 479 | msleep(500); |
| 480 | if (!failed) { |
| 481 | ssb_printk("100%% ]\n"); |
| 482 | ssb_printk(KERN_NOTICE PFX "SPROM written.\n"); |
| 483 | } |
| 484 | |
| 485 | return failed ? -EBUSY : 0; |
| 486 | } |
| 487 | |
| 488 | static int ssb_pcmcia_sprom_check_crc(const u16 *sprom, size_t size) |
| 489 | { |
| 490 | //TODO |
| 491 | return 0; |
| 492 | } |
| 493 | |
| 494 | #define GOTO_ERROR_ON(condition, description) do { \ |
| 495 | if (unlikely(condition)) { \ |
| 496 | error_description = description; \ |
| 497 | goto error; \ |
| 498 | } \ |
| 499 | } while (0) |
| 500 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 501 | int ssb_pcmcia_get_invariants(struct ssb_bus *bus, |
| 502 | struct ssb_init_invariants *iv) |
| 503 | { |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 504 | tuple_t tuple; |
| 505 | int res; |
| 506 | unsigned char buf[32]; |
| 507 | struct ssb_sprom *sprom = &iv->sprom; |
| 508 | struct ssb_boardinfo *bi = &iv->boardinfo; |
| 509 | const char *error_description; |
| 510 | |
| 511 | memset(sprom, 0xFF, sizeof(*sprom)); |
| 512 | sprom->revision = 1; |
| 513 | sprom->boardflags_lo = 0; |
| 514 | sprom->boardflags_hi = 0; |
| 515 | |
| 516 | /* First fetch the MAC address. */ |
| 517 | memset(&tuple, 0, sizeof(tuple)); |
| 518 | tuple.DesiredTuple = CISTPL_FUNCE; |
| 519 | tuple.TupleData = buf; |
| 520 | tuple.TupleDataMax = sizeof(buf); |
| 521 | res = pcmcia_get_first_tuple(bus->host_pcmcia, &tuple); |
| 522 | GOTO_ERROR_ON(res != CS_SUCCESS, "MAC first tpl"); |
| 523 | res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple); |
| 524 | GOTO_ERROR_ON(res != CS_SUCCESS, "MAC first tpl data"); |
| 525 | while (1) { |
| 526 | GOTO_ERROR_ON(tuple.TupleDataLen < 1, "MAC tpl < 1"); |
| 527 | if (tuple.TupleData[0] == CISTPL_FUNCE_LAN_NODE_ID) |
| 528 | break; |
| 529 | res = pcmcia_get_next_tuple(bus->host_pcmcia, &tuple); |
| 530 | GOTO_ERROR_ON(res != CS_SUCCESS, "MAC next tpl"); |
| 531 | res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple); |
| 532 | GOTO_ERROR_ON(res != CS_SUCCESS, "MAC next tpl data"); |
| 533 | } |
| 534 | GOTO_ERROR_ON(tuple.TupleDataLen != ETH_ALEN + 2, "MAC tpl size"); |
| 535 | memcpy(sprom->il0mac, &tuple.TupleData[2], ETH_ALEN); |
| 536 | |
| 537 | /* Fetch the vendor specific tuples. */ |
| 538 | memset(&tuple, 0, sizeof(tuple)); |
| 539 | tuple.DesiredTuple = SSB_PCMCIA_CIS; |
| 540 | tuple.TupleData = buf; |
| 541 | tuple.TupleDataMax = sizeof(buf); |
| 542 | res = pcmcia_get_first_tuple(bus->host_pcmcia, &tuple); |
| 543 | GOTO_ERROR_ON(res != CS_SUCCESS, "VEN first tpl"); |
| 544 | res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple); |
| 545 | GOTO_ERROR_ON(res != CS_SUCCESS, "VEN first tpl data"); |
| 546 | while (1) { |
| 547 | GOTO_ERROR_ON(tuple.TupleDataLen < 1, "VEN tpl < 1"); |
| 548 | switch (tuple.TupleData[0]) { |
| 549 | case SSB_PCMCIA_CIS_ID: |
| 550 | GOTO_ERROR_ON((tuple.TupleDataLen != 5) && |
| 551 | (tuple.TupleDataLen != 7), |
| 552 | "id tpl size"); |
| 553 | bi->vendor = tuple.TupleData[1] | |
| 554 | ((u16)tuple.TupleData[2] << 8); |
| 555 | break; |
| 556 | case SSB_PCMCIA_CIS_BOARDREV: |
| 557 | GOTO_ERROR_ON(tuple.TupleDataLen != 2, |
| 558 | "boardrev tpl size"); |
| 559 | sprom->board_rev = tuple.TupleData[1]; |
| 560 | break; |
| 561 | case SSB_PCMCIA_CIS_PA: |
| 562 | GOTO_ERROR_ON(tuple.TupleDataLen != 9, |
| 563 | "pa tpl size"); |
| 564 | sprom->pa0b0 = tuple.TupleData[1] | |
| 565 | ((u16)tuple.TupleData[2] << 8); |
| 566 | sprom->pa0b1 = tuple.TupleData[3] | |
| 567 | ((u16)tuple.TupleData[4] << 8); |
| 568 | sprom->pa0b2 = tuple.TupleData[5] | |
| 569 | ((u16)tuple.TupleData[6] << 8); |
| 570 | sprom->itssi_a = tuple.TupleData[7]; |
| 571 | sprom->itssi_bg = tuple.TupleData[7]; |
| 572 | sprom->maxpwr_a = tuple.TupleData[8]; |
| 573 | sprom->maxpwr_bg = tuple.TupleData[8]; |
| 574 | break; |
| 575 | case SSB_PCMCIA_CIS_OEMNAME: |
| 576 | /* We ignore this. */ |
| 577 | break; |
| 578 | case SSB_PCMCIA_CIS_CCODE: |
| 579 | GOTO_ERROR_ON(tuple.TupleDataLen != 2, |
| 580 | "ccode tpl size"); |
| 581 | sprom->country_code = tuple.TupleData[1]; |
| 582 | break; |
| 583 | case SSB_PCMCIA_CIS_ANTENNA: |
| 584 | GOTO_ERROR_ON(tuple.TupleDataLen != 2, |
| 585 | "ant tpl size"); |
| 586 | sprom->ant_available_a = tuple.TupleData[1]; |
| 587 | sprom->ant_available_bg = tuple.TupleData[1]; |
| 588 | break; |
| 589 | case SSB_PCMCIA_CIS_ANTGAIN: |
| 590 | GOTO_ERROR_ON(tuple.TupleDataLen != 2, |
| 591 | "antg tpl size"); |
| 592 | sprom->antenna_gain.ghz24.a0 = tuple.TupleData[1]; |
| 593 | sprom->antenna_gain.ghz24.a1 = tuple.TupleData[1]; |
| 594 | sprom->antenna_gain.ghz24.a2 = tuple.TupleData[1]; |
| 595 | sprom->antenna_gain.ghz24.a3 = tuple.TupleData[1]; |
| 596 | sprom->antenna_gain.ghz5.a0 = tuple.TupleData[1]; |
| 597 | sprom->antenna_gain.ghz5.a1 = tuple.TupleData[1]; |
| 598 | sprom->antenna_gain.ghz5.a2 = tuple.TupleData[1]; |
| 599 | sprom->antenna_gain.ghz5.a3 = tuple.TupleData[1]; |
| 600 | break; |
| 601 | case SSB_PCMCIA_CIS_BFLAGS: |
| 602 | GOTO_ERROR_ON(tuple.TupleDataLen != 3, |
| 603 | "bfl tpl size"); |
| 604 | sprom->boardflags_lo = tuple.TupleData[1] | |
| 605 | ((u16)tuple.TupleData[2] << 8); |
| 606 | break; |
| 607 | case SSB_PCMCIA_CIS_LEDS: |
| 608 | GOTO_ERROR_ON(tuple.TupleDataLen != 5, |
| 609 | "leds tpl size"); |
| 610 | sprom->gpio0 = tuple.TupleData[1]; |
| 611 | sprom->gpio1 = tuple.TupleData[2]; |
| 612 | sprom->gpio2 = tuple.TupleData[3]; |
| 613 | sprom->gpio3 = tuple.TupleData[4]; |
| 614 | break; |
| 615 | } |
| 616 | res = pcmcia_get_next_tuple(bus->host_pcmcia, &tuple); |
| 617 | if (res == CS_NO_MORE_ITEMS) |
| 618 | break; |
| 619 | GOTO_ERROR_ON(res != CS_SUCCESS, "VEN next tpl"); |
| 620 | res = pcmcia_get_tuple_data(bus->host_pcmcia, &tuple); |
| 621 | GOTO_ERROR_ON(res != CS_SUCCESS, "VEN next tpl data"); |
| 622 | } |
| 623 | |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 624 | return 0; |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 625 | error: |
| 626 | ssb_printk(KERN_ERR PFX |
| 627 | "PCMCIA: Failed to fetch device invariants: %s\n", |
| 628 | error_description); |
| 629 | return -ENODEV; |
| 630 | } |
| 631 | |
| 632 | static ssize_t ssb_pcmcia_attr_sprom_show(struct device *pcmciadev, |
| 633 | struct device_attribute *attr, |
| 634 | char *buf) |
| 635 | { |
| 636 | struct pcmcia_device *pdev = |
| 637 | container_of(pcmciadev, struct pcmcia_device, dev); |
| 638 | struct ssb_bus *bus; |
| 639 | |
| 640 | bus = ssb_pcmcia_dev_to_bus(pdev); |
| 641 | if (!bus) |
| 642 | return -ENODEV; |
| 643 | |
| 644 | return ssb_attr_sprom_show(bus, buf, |
| 645 | ssb_pcmcia_sprom_read_all); |
| 646 | } |
| 647 | |
| 648 | static ssize_t ssb_pcmcia_attr_sprom_store(struct device *pcmciadev, |
| 649 | struct device_attribute *attr, |
| 650 | const char *buf, size_t count) |
| 651 | { |
| 652 | struct pcmcia_device *pdev = |
| 653 | container_of(pcmciadev, struct pcmcia_device, dev); |
| 654 | struct ssb_bus *bus; |
| 655 | |
| 656 | bus = ssb_pcmcia_dev_to_bus(pdev); |
| 657 | if (!bus) |
| 658 | return -ENODEV; |
| 659 | |
| 660 | return ssb_attr_sprom_store(bus, buf, count, |
| 661 | ssb_pcmcia_sprom_check_crc, |
| 662 | ssb_pcmcia_sprom_write_all); |
| 663 | } |
| 664 | |
| 665 | static DEVICE_ATTR(ssb_sprom, 0600, |
| 666 | ssb_pcmcia_attr_sprom_show, |
| 667 | ssb_pcmcia_attr_sprom_store); |
| 668 | |
Michael Buesch | 9788ba7 | 2008-03-28 10:34:55 +0100 | [diff] [blame^] | 669 | static int ssb_pcmcia_cor_setup(struct ssb_bus *bus, u8 cor) |
| 670 | { |
| 671 | u8 val; |
| 672 | int err; |
| 673 | |
| 674 | err = ssb_pcmcia_cfg_read(bus, cor, &val); |
| 675 | if (err) |
| 676 | return err; |
| 677 | val &= ~COR_SOFT_RESET; |
| 678 | val |= COR_FUNC_ENA | COR_IREQ_ENA | COR_LEVEL_REQ; |
| 679 | err = ssb_pcmcia_cfg_write(bus, cor, val); |
| 680 | if (err) |
| 681 | return err; |
| 682 | msleep(40); |
| 683 | |
| 684 | return 0; |
| 685 | } |
| 686 | |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 687 | void ssb_pcmcia_exit(struct ssb_bus *bus) |
| 688 | { |
| 689 | if (bus->bustype != SSB_BUSTYPE_PCMCIA) |
| 690 | return; |
| 691 | |
| 692 | device_remove_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom); |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 693 | } |
| 694 | |
| 695 | int ssb_pcmcia_init(struct ssb_bus *bus) |
| 696 | { |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 697 | int err; |
| 698 | |
| 699 | if (bus->bustype != SSB_BUSTYPE_PCMCIA) |
| 700 | return 0; |
| 701 | |
| 702 | /* Switch segment to a known state and sync |
| 703 | * bus->mapped_pcmcia_seg with hardware state. */ |
| 704 | ssb_pcmcia_switch_segment(bus, 0); |
| 705 | |
Michael Buesch | 9788ba7 | 2008-03-28 10:34:55 +0100 | [diff] [blame^] | 706 | /* Init the COR register. */ |
| 707 | err = ssb_pcmcia_cor_setup(bus, CISREG_COR); |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 708 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 709 | goto error; |
Michael Buesch | 9788ba7 | 2008-03-28 10:34:55 +0100 | [diff] [blame^] | 710 | /* Some cards also need this register to get poked. */ |
| 711 | err = ssb_pcmcia_cor_setup(bus, CISREG_COR + 0x80); |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 712 | if (err) |
| 713 | goto error; |
| 714 | |
| 715 | bus->sprom_size = SSB_PCMCIA_SPROM_SIZE; |
| 716 | mutex_init(&bus->sprom_mutex); |
| 717 | err = device_create_file(&bus->host_pcmcia->dev, &dev_attr_ssb_sprom); |
| 718 | if (err) |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 719 | goto error; |
| 720 | |
| 721 | return 0; |
| 722 | error: |
Michael Buesch | e7ec2e3 | 2008-03-10 17:26:32 +0100 | [diff] [blame] | 723 | ssb_printk(KERN_ERR PFX "Failed to initialize PCMCIA host device\n"); |
| 724 | return err; |
Michael Buesch | 61e115a | 2007-09-18 15:12:50 -0400 | [diff] [blame] | 725 | } |