Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | The all defines and part of code (such as cs461x_*) are |
| 3 | contributed from ALSA 0.5.8 sources. |
| 4 | See http://www.alsa-project.org/ for sources |
| 5 | |
| 6 | Tested on Linux 686 2.4.0-test9, ALSA 0.5.8a and CS4610 |
| 7 | */ |
| 8 | |
| 9 | #include <asm/io.h> |
| 10 | |
| 11 | #include <linux/module.h> |
| 12 | #include <linux/ioport.h> |
| 13 | #include <linux/config.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/gameport.h> |
| 16 | #include <linux/slab.h> |
| 17 | #include <linux/pci.h> |
| 18 | |
| 19 | MODULE_AUTHOR("Victor Krapivin"); |
| 20 | MODULE_LICENSE("GPL"); |
| 21 | |
| 22 | /* |
| 23 | These options are experimental |
| 24 | |
| 25 | #define CS461X_FULL_MAP |
| 26 | */ |
| 27 | |
| 28 | |
| 29 | #ifndef PCI_VENDOR_ID_CIRRUS |
| 30 | #define PCI_VENDOR_ID_CIRRUS 0x1013 |
| 31 | #endif |
| 32 | #ifndef PCI_DEVICE_ID_CIRRUS_4610 |
| 33 | #define PCI_DEVICE_ID_CIRRUS_4610 0x6001 |
| 34 | #endif |
| 35 | #ifndef PCI_DEVICE_ID_CIRRUS_4612 |
| 36 | #define PCI_DEVICE_ID_CIRRUS_4612 0x6003 |
| 37 | #endif |
| 38 | #ifndef PCI_DEVICE_ID_CIRRUS_4615 |
| 39 | #define PCI_DEVICE_ID_CIRRUS_4615 0x6004 |
| 40 | #endif |
| 41 | |
| 42 | /* Registers */ |
| 43 | |
| 44 | #define BA0_JSPT 0x00000480 |
| 45 | #define BA0_JSCTL 0x00000484 |
| 46 | #define BA0_JSC1 0x00000488 |
| 47 | #define BA0_JSC2 0x0000048C |
| 48 | #define BA0_JSIO 0x000004A0 |
| 49 | |
| 50 | /* Bits for JSPT */ |
| 51 | |
| 52 | #define JSPT_CAX 0x00000001 |
| 53 | #define JSPT_CAY 0x00000002 |
| 54 | #define JSPT_CBX 0x00000004 |
| 55 | #define JSPT_CBY 0x00000008 |
| 56 | #define JSPT_BA1 0x00000010 |
| 57 | #define JSPT_BA2 0x00000020 |
| 58 | #define JSPT_BB1 0x00000040 |
| 59 | #define JSPT_BB2 0x00000080 |
| 60 | |
| 61 | /* Bits for JSCTL */ |
| 62 | |
| 63 | #define JSCTL_SP_MASK 0x00000003 |
| 64 | #define JSCTL_SP_SLOW 0x00000000 |
| 65 | #define JSCTL_SP_MEDIUM_SLOW 0x00000001 |
| 66 | #define JSCTL_SP_MEDIUM_FAST 0x00000002 |
| 67 | #define JSCTL_SP_FAST 0x00000003 |
| 68 | #define JSCTL_ARE 0x00000004 |
| 69 | |
| 70 | /* Data register pairs masks */ |
| 71 | |
| 72 | #define JSC1_Y1V_MASK 0x0000FFFF |
| 73 | #define JSC1_X1V_MASK 0xFFFF0000 |
| 74 | #define JSC1_Y1V_SHIFT 0 |
| 75 | #define JSC1_X1V_SHIFT 16 |
| 76 | #define JSC2_Y2V_MASK 0x0000FFFF |
| 77 | #define JSC2_X2V_MASK 0xFFFF0000 |
| 78 | #define JSC2_Y2V_SHIFT 0 |
| 79 | #define JSC2_X2V_SHIFT 16 |
| 80 | |
| 81 | /* JS GPIO */ |
| 82 | |
| 83 | #define JSIO_DAX 0x00000001 |
| 84 | #define JSIO_DAY 0x00000002 |
| 85 | #define JSIO_DBX 0x00000004 |
| 86 | #define JSIO_DBY 0x00000008 |
| 87 | #define JSIO_AXOE 0x00000010 |
| 88 | #define JSIO_AYOE 0x00000020 |
| 89 | #define JSIO_BXOE 0x00000040 |
| 90 | #define JSIO_BYOE 0x00000080 |
| 91 | |
| 92 | /* |
| 93 | The card initialization code is obfuscated; the module cs461x |
| 94 | need to be loaded after ALSA modules initialized and something |
| 95 | played on the CS 4610 chip (see sources for details of CS4610 |
| 96 | initialization code from ALSA) |
| 97 | */ |
| 98 | |
| 99 | /* Card specific definitions */ |
| 100 | |
| 101 | #define CS461X_BA0_SIZE 0x2000 |
| 102 | #define CS461X_BA1_DATA0_SIZE 0x3000 |
| 103 | #define CS461X_BA1_DATA1_SIZE 0x3800 |
| 104 | #define CS461X_BA1_PRG_SIZE 0x7000 |
| 105 | #define CS461X_BA1_REG_SIZE 0x0100 |
| 106 | |
| 107 | #define BA1_SP_DMEM0 0x00000000 |
| 108 | #define BA1_SP_DMEM1 0x00010000 |
| 109 | #define BA1_SP_PMEM 0x00020000 |
| 110 | #define BA1_SP_REG 0x00030000 |
| 111 | |
| 112 | #define BA1_DWORD_SIZE (13 * 1024 + 512) |
| 113 | #define BA1_MEMORY_COUNT 3 |
| 114 | |
| 115 | /* |
| 116 | Only one CS461x card is still suppoted; the code requires |
| 117 | redesign to avoid this limitatuion. |
| 118 | */ |
| 119 | |
| 120 | static unsigned long ba0_addr; |
| 121 | static unsigned int __iomem *ba0; |
| 122 | |
| 123 | #ifdef CS461X_FULL_MAP |
| 124 | static unsigned long ba1_addr; |
| 125 | static union ba1_t { |
| 126 | struct { |
| 127 | unsigned int __iomem *data0; |
| 128 | unsigned int __iomem *data1; |
| 129 | unsigned int __iomem *pmem; |
| 130 | unsigned int __iomem *reg; |
| 131 | } name; |
| 132 | unsigned int __iomem *idx[4]; |
| 133 | } ba1; |
| 134 | |
| 135 | static void cs461x_poke(unsigned long reg, unsigned int val) |
| 136 | { |
| 137 | writel(val, &ba1.idx[(reg >> 16) & 3][(reg >> 2) & 0x3fff]); |
| 138 | } |
| 139 | |
| 140 | static unsigned int cs461x_peek(unsigned long reg) |
| 141 | { |
| 142 | return readl(&ba1.idx[(reg >> 16) & 3][(reg >> 2) & 0x3fff]); |
| 143 | } |
| 144 | |
| 145 | #endif |
| 146 | |
| 147 | static void cs461x_pokeBA0(unsigned long reg, unsigned int val) |
| 148 | { |
| 149 | writel(val, &ba0[reg >> 2]); |
| 150 | } |
| 151 | |
| 152 | static unsigned int cs461x_peekBA0(unsigned long reg) |
| 153 | { |
| 154 | return readl(&ba0[reg >> 2]); |
| 155 | } |
| 156 | |
| 157 | static int cs461x_free(struct pci_dev *pdev) |
| 158 | { |
| 159 | struct gameport *port = pci_get_drvdata(pdev); |
| 160 | |
| 161 | if (port) |
| 162 | gameport_unregister_port(port); |
| 163 | |
| 164 | if (ba0) iounmap(ba0); |
| 165 | #ifdef CS461X_FULL_MAP |
| 166 | if (ba1.name.data0) iounmap(ba1.name.data0); |
| 167 | if (ba1.name.data1) iounmap(ba1.name.data1); |
| 168 | if (ba1.name.pmem) iounmap(ba1.name.pmem); |
| 169 | if (ba1.name.reg) iounmap(ba1.name.reg); |
| 170 | #endif |
| 171 | return 0; |
| 172 | } |
| 173 | |
| 174 | static void cs461x_gameport_trigger(struct gameport *gameport) |
| 175 | { |
| 176 | cs461x_pokeBA0(BA0_JSPT, 0xFF); //outb(gameport->io, 0xFF); |
| 177 | } |
| 178 | |
| 179 | static unsigned char cs461x_gameport_read(struct gameport *gameport) |
| 180 | { |
| 181 | return cs461x_peekBA0(BA0_JSPT); //inb(gameport->io); |
| 182 | } |
| 183 | |
| 184 | static int cs461x_gameport_cooked_read(struct gameport *gameport, int *axes, int *buttons) |
| 185 | { |
| 186 | unsigned js1, js2, jst; |
| 187 | |
| 188 | js1 = cs461x_peekBA0(BA0_JSC1); |
| 189 | js2 = cs461x_peekBA0(BA0_JSC2); |
| 190 | jst = cs461x_peekBA0(BA0_JSPT); |
| 191 | |
| 192 | *buttons = (~jst >> 4) & 0x0F; |
| 193 | |
| 194 | axes[0] = ((js1 & JSC1_Y1V_MASK) >> JSC1_Y1V_SHIFT) & 0xFFFF; |
| 195 | axes[1] = ((js1 & JSC1_X1V_MASK) >> JSC1_X1V_SHIFT) & 0xFFFF; |
| 196 | axes[2] = ((js2 & JSC2_Y2V_MASK) >> JSC2_Y2V_SHIFT) & 0xFFFF; |
| 197 | axes[3] = ((js2 & JSC2_X2V_MASK) >> JSC2_X2V_SHIFT) & 0xFFFF; |
| 198 | |
| 199 | for(jst=0;jst<4;++jst) |
| 200 | if(axes[jst]==0xFFFF) axes[jst] = -1; |
| 201 | return 0; |
| 202 | } |
| 203 | |
| 204 | static int cs461x_gameport_open(struct gameport *gameport, int mode) |
| 205 | { |
| 206 | switch (mode) { |
| 207 | case GAMEPORT_MODE_COOKED: |
| 208 | case GAMEPORT_MODE_RAW: |
| 209 | return 0; |
| 210 | default: |
| 211 | return -1; |
| 212 | } |
| 213 | return 0; |
| 214 | } |
| 215 | |
| 216 | static struct pci_device_id cs461x_pci_tbl[] = { |
| 217 | { PCI_VENDOR_ID_CIRRUS, 0x6001, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* Cirrus CS4610 */ |
| 218 | { PCI_VENDOR_ID_CIRRUS, 0x6003, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* Cirrus CS4612 */ |
| 219 | { PCI_VENDOR_ID_CIRRUS, 0x6005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, /* Cirrus CS4615 */ |
| 220 | { 0, } |
| 221 | }; |
| 222 | MODULE_DEVICE_TABLE(pci, cs461x_pci_tbl); |
| 223 | |
| 224 | static int __devinit cs461x_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
| 225 | { |
| 226 | int rc; |
| 227 | struct gameport* port; |
| 228 | |
| 229 | rc = pci_enable_device(pdev); |
| 230 | if (rc) { |
| 231 | printk(KERN_ERR "cs461x: Cannot enable PCI gameport (bus %d, devfn %d) error=%d\n", |
| 232 | pdev->bus->number, pdev->devfn, rc); |
| 233 | return rc; |
| 234 | } |
| 235 | |
| 236 | ba0_addr = pci_resource_start(pdev, 0); |
| 237 | #ifdef CS461X_FULL_MAP |
| 238 | ba1_addr = pci_resource_start(pdev, 1); |
| 239 | #endif |
| 240 | if (ba0_addr == 0 || ba0_addr == ~0 |
| 241 | #ifdef CS461X_FULL_MAP |
| 242 | || ba1_addr == 0 || ba1_addr == ~0 |
| 243 | #endif |
| 244 | ) { |
| 245 | printk(KERN_ERR "cs461x: wrong address - ba0 = 0x%lx\n", ba0_addr); |
| 246 | #ifdef CS461X_FULL_MAP |
| 247 | printk(KERN_ERR "cs461x: wrong address - ba1 = 0x%lx\n", ba1_addr); |
| 248 | #endif |
| 249 | cs461x_free(pdev); |
| 250 | return -ENOMEM; |
| 251 | } |
| 252 | |
| 253 | ba0 = ioremap(ba0_addr, CS461X_BA0_SIZE); |
| 254 | #ifdef CS461X_FULL_MAP |
| 255 | ba1.name.data0 = ioremap(ba1_addr + BA1_SP_DMEM0, CS461X_BA1_DATA0_SIZE); |
| 256 | ba1.name.data1 = ioremap(ba1_addr + BA1_SP_DMEM1, CS461X_BA1_DATA1_SIZE); |
| 257 | ba1.name.pmem = ioremap(ba1_addr + BA1_SP_PMEM, CS461X_BA1_PRG_SIZE); |
| 258 | ba1.name.reg = ioremap(ba1_addr + BA1_SP_REG, CS461X_BA1_REG_SIZE); |
| 259 | |
| 260 | if (ba0 == NULL || ba1.name.data0 == NULL || |
| 261 | ba1.name.data1 == NULL || ba1.name.pmem == NULL || |
| 262 | ba1.name.reg == NULL) { |
| 263 | cs461x_free(pdev); |
| 264 | return -ENOMEM; |
| 265 | } |
| 266 | #else |
| 267 | if (ba0 == NULL) { |
| 268 | cs461x_free(pdev); |
| 269 | return -ENOMEM; |
| 270 | } |
| 271 | #endif |
| 272 | |
| 273 | if (!(port = gameport_allocate_port())) { |
| 274 | printk(KERN_ERR "cs461x: Memory allocation failed\n"); |
| 275 | cs461x_free(pdev); |
| 276 | return -ENOMEM; |
| 277 | } |
| 278 | |
| 279 | pci_set_drvdata(pdev, port); |
| 280 | |
| 281 | port->open = cs461x_gameport_open; |
| 282 | port->trigger = cs461x_gameport_trigger; |
| 283 | port->read = cs461x_gameport_read; |
| 284 | port->cooked_read = cs461x_gameport_cooked_read; |
| 285 | |
| 286 | gameport_set_name(port, "CS416x"); |
| 287 | gameport_set_phys(port, "pci%s/gameport0", pci_name(pdev)); |
| 288 | port->dev.parent = &pdev->dev; |
| 289 | |
| 290 | cs461x_pokeBA0(BA0_JSIO, 0xFF); // ? |
| 291 | cs461x_pokeBA0(BA0_JSCTL, JSCTL_SP_MEDIUM_SLOW); |
| 292 | |
| 293 | gameport_register_port(port); |
| 294 | |
| 295 | return 0; |
| 296 | } |
| 297 | |
| 298 | static void __devexit cs461x_pci_remove(struct pci_dev *pdev) |
| 299 | { |
| 300 | cs461x_free(pdev); |
| 301 | } |
| 302 | |
| 303 | static struct pci_driver cs461x_pci_driver = { |
| 304 | .name = "CS461x_gameport", |
| 305 | .id_table = cs461x_pci_tbl, |
| 306 | .probe = cs461x_pci_probe, |
| 307 | .remove = __devexit_p(cs461x_pci_remove), |
| 308 | }; |
| 309 | |
| 310 | static int __init cs461x_init(void) |
| 311 | { |
| 312 | return pci_register_driver(&cs461x_pci_driver); |
| 313 | } |
| 314 | |
| 315 | static void __exit cs461x_exit(void) |
| 316 | { |
| 317 | pci_unregister_driver(&cs461x_pci_driver); |
| 318 | } |
| 319 | |
| 320 | module_init(cs461x_init); |
| 321 | module_exit(cs461x_exit); |
| 322 | |