yenta_socket.c 39 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347134813491350135113521353135413551356135713581359136013611362136313641365136613671368136913701371137213731374137513761377137813791380138113821383138413851386138713881389139013911392139313941395139613971398139914001401140214031404140514061407140814091410141114121413141414151416141714181419142014211422142314241425142614271428142914301431143214331434143514361437143814391440144114421443144414451446144714481449145014511452145314541455145614571458145914601461146214631464
  1. /*
  2. * Regular cardbus driver ("yenta_socket")
  3. *
  4. * (C) Copyright 1999, 2000 Linus Torvalds
  5. *
  6. * Changelog:
  7. * Aug 2002: Manfred Spraul <manfred@colorfullife.com>
  8. * Dynamically adjust the size of the bridge resource
  9. *
  10. * May 2003: Dominik Brodowski <linux@brodo.de>
  11. * Merge pci_socket.c and yenta.c into one file
  12. */
  13. #include <linux/init.h>
  14. #include <linux/pci.h>
  15. #include <linux/workqueue.h>
  16. #include <linux/interrupt.h>
  17. #include <linux/delay.h>
  18. #include <linux/module.h>
  19. #include <linux/io.h>
  20. #include <pcmcia/cs_types.h>
  21. #include <pcmcia/ss.h>
  22. #include <pcmcia/cs.h>
  23. #include "yenta_socket.h"
  24. #include "i82365.h"
  25. static int disable_clkrun;
  26. module_param(disable_clkrun, bool, 0444);
  27. MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
  28. static int isa_probe = 1;
  29. module_param(isa_probe, bool, 0444);
  30. MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
  31. static int pwr_irqs_off;
  32. module_param(pwr_irqs_off, bool, 0644);
  33. MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
  34. #define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
  35. /* Don't ask.. */
  36. #define to_cycles(ns) ((ns)/120)
  37. #define to_ns(cycles) ((cycles)*120)
  38. /*
  39. * yenta PCI irq probing.
  40. * currently only used in the TI/EnE initialization code
  41. */
  42. #ifdef CONFIG_YENTA_TI
  43. static int yenta_probe_cb_irq(struct yenta_socket *socket);
  44. #endif
  45. static unsigned int override_bios;
  46. module_param(override_bios, uint, 0000);
  47. MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
  48. /*
  49. * Generate easy-to-use ways of reading a cardbus sockets
  50. * regular memory space ("cb_xxx"), configuration space
  51. * ("config_xxx") and compatibility space ("exca_xxxx")
  52. */
  53. static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
  54. {
  55. u32 val = readl(socket->base + reg);
  56. debug("%04x %08x\n", socket, reg, val);
  57. return val;
  58. }
  59. static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
  60. {
  61. debug("%04x %08x\n", socket, reg, val);
  62. writel(val, socket->base + reg);
  63. readl(socket->base + reg); /* avoid problems with PCI write posting */
  64. }
  65. static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
  66. {
  67. u8 val;
  68. pci_read_config_byte(socket->dev, offset, &val);
  69. debug("%04x %02x\n", socket, offset, val);
  70. return val;
  71. }
  72. static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
  73. {
  74. u16 val;
  75. pci_read_config_word(socket->dev, offset, &val);
  76. debug("%04x %04x\n", socket, offset, val);
  77. return val;
  78. }
  79. static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
  80. {
  81. u32 val;
  82. pci_read_config_dword(socket->dev, offset, &val);
  83. debug("%04x %08x\n", socket, offset, val);
  84. return val;
  85. }
  86. static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
  87. {
  88. debug("%04x %02x\n", socket, offset, val);
  89. pci_write_config_byte(socket->dev, offset, val);
  90. }
  91. static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
  92. {
  93. debug("%04x %04x\n", socket, offset, val);
  94. pci_write_config_word(socket->dev, offset, val);
  95. }
  96. static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
  97. {
  98. debug("%04x %08x\n", socket, offset, val);
  99. pci_write_config_dword(socket->dev, offset, val);
  100. }
  101. static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
  102. {
  103. u8 val = readb(socket->base + 0x800 + reg);
  104. debug("%04x %02x\n", socket, reg, val);
  105. return val;
  106. }
  107. static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
  108. {
  109. u16 val;
  110. val = readb(socket->base + 0x800 + reg);
  111. val |= readb(socket->base + 0x800 + reg + 1) << 8;
  112. debug("%04x %04x\n", socket, reg, val);
  113. return val;
  114. }
  115. static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
  116. {
  117. debug("%04x %02x\n", socket, reg, val);
  118. writeb(val, socket->base + 0x800 + reg);
  119. readb(socket->base + 0x800 + reg); /* PCI write posting... */
  120. }
  121. static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
  122. {
  123. debug("%04x %04x\n", socket, reg, val);
  124. writeb(val, socket->base + 0x800 + reg);
  125. writeb(val >> 8, socket->base + 0x800 + reg + 1);
  126. /* PCI write posting... */
  127. readb(socket->base + 0x800 + reg);
  128. readb(socket->base + 0x800 + reg + 1);
  129. }
  130. static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
  131. {
  132. struct pci_dev *dev = to_pci_dev(yentadev);
  133. struct yenta_socket *socket = pci_get_drvdata(dev);
  134. int offset = 0, i;
  135. offset = snprintf(buf, PAGE_SIZE, "CB registers:");
  136. for (i = 0; i < 0x24; i += 4) {
  137. unsigned val;
  138. if (!(i & 15))
  139. offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
  140. val = cb_readl(socket, i);
  141. offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
  142. }
  143. offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
  144. for (i = 0; i < 0x45; i++) {
  145. unsigned char val;
  146. if (!(i & 7)) {
  147. if (i & 8) {
  148. memcpy(buf + offset, " -", 2);
  149. offset += 2;
  150. } else
  151. offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
  152. }
  153. val = exca_readb(socket, i);
  154. offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
  155. }
  156. buf[offset++] = '\n';
  157. return offset;
  158. }
  159. static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
  160. /*
  161. * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
  162. * on what kind of card is inserted..
  163. */
  164. static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
  165. {
  166. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  167. unsigned int val;
  168. u32 state = cb_readl(socket, CB_SOCKET_STATE);
  169. val = (state & CB_3VCARD) ? SS_3VCARD : 0;
  170. val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
  171. val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
  172. val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
  173. if (state & CB_CBCARD) {
  174. val |= SS_CARDBUS;
  175. val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
  176. val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
  177. val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
  178. } else if (state & CB_16BITCARD) {
  179. u8 status = exca_readb(socket, I365_STATUS);
  180. val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
  181. if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
  182. val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
  183. } else {
  184. val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
  185. val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
  186. }
  187. val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
  188. val |= (status & I365_CS_READY) ? SS_READY : 0;
  189. val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
  190. }
  191. *value = val;
  192. return 0;
  193. }
  194. static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
  195. {
  196. /* some birdges require to use the ExCA registers to power 16bit cards */
  197. if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
  198. (socket->flags & YENTA_16BIT_POWER_EXCA)) {
  199. u8 reg, old;
  200. reg = old = exca_readb(socket, I365_POWER);
  201. reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
  202. /* i82365SL-DF style */
  203. if (socket->flags & YENTA_16BIT_POWER_DF) {
  204. switch (state->Vcc) {
  205. case 33:
  206. reg |= I365_VCC_3V;
  207. break;
  208. case 50:
  209. reg |= I365_VCC_5V;
  210. break;
  211. default:
  212. reg = 0;
  213. break;
  214. }
  215. switch (state->Vpp) {
  216. case 33:
  217. case 50:
  218. reg |= I365_VPP1_5V;
  219. break;
  220. case 120:
  221. reg |= I365_VPP1_12V;
  222. break;
  223. }
  224. } else {
  225. /* i82365SL-B style */
  226. switch (state->Vcc) {
  227. case 50:
  228. reg |= I365_VCC_5V;
  229. break;
  230. default:
  231. reg = 0;
  232. break;
  233. }
  234. switch (state->Vpp) {
  235. case 50:
  236. reg |= I365_VPP1_5V | I365_VPP2_5V;
  237. break;
  238. case 120:
  239. reg |= I365_VPP1_12V | I365_VPP2_12V;
  240. break;
  241. }
  242. }
  243. if (reg != old)
  244. exca_writeb(socket, I365_POWER, reg);
  245. } else {
  246. u32 reg = 0; /* CB_SC_STPCLK? */
  247. switch (state->Vcc) {
  248. case 33:
  249. reg = CB_SC_VCC_3V;
  250. break;
  251. case 50:
  252. reg = CB_SC_VCC_5V;
  253. break;
  254. default:
  255. reg = 0;
  256. break;
  257. }
  258. switch (state->Vpp) {
  259. case 33:
  260. reg |= CB_SC_VPP_3V;
  261. break;
  262. case 50:
  263. reg |= CB_SC_VPP_5V;
  264. break;
  265. case 120:
  266. reg |= CB_SC_VPP_12V;
  267. break;
  268. }
  269. if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
  270. cb_writel(socket, CB_SOCKET_CONTROL, reg);
  271. }
  272. }
  273. static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
  274. {
  275. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  276. u16 bridge;
  277. /* if powering down: do it immediately */
  278. if (state->Vcc == 0)
  279. yenta_set_power(socket, state);
  280. socket->io_irq = state->io_irq;
  281. bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
  282. if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
  283. u8 intr;
  284. bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
  285. /* ISA interrupt control? */
  286. intr = exca_readb(socket, I365_INTCTL);
  287. intr = (intr & ~0xf);
  288. if (!socket->cb_irq) {
  289. intr |= state->io_irq;
  290. bridge |= CB_BRIDGE_INTR;
  291. }
  292. exca_writeb(socket, I365_INTCTL, intr);
  293. } else {
  294. u8 reg;
  295. reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
  296. reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
  297. reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
  298. if (state->io_irq != socket->cb_irq) {
  299. reg |= state->io_irq;
  300. bridge |= CB_BRIDGE_INTR;
  301. }
  302. exca_writeb(socket, I365_INTCTL, reg);
  303. reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
  304. reg |= I365_PWR_NORESET;
  305. if (state->flags & SS_PWR_AUTO)
  306. reg |= I365_PWR_AUTO;
  307. if (state->flags & SS_OUTPUT_ENA)
  308. reg |= I365_PWR_OUT;
  309. if (exca_readb(socket, I365_POWER) != reg)
  310. exca_writeb(socket, I365_POWER, reg);
  311. /* CSC interrupt: no ISA irq for CSC */
  312. reg = I365_CSC_DETECT;
  313. if (state->flags & SS_IOCARD) {
  314. if (state->csc_mask & SS_STSCHG)
  315. reg |= I365_CSC_STSCHG;
  316. } else {
  317. if (state->csc_mask & SS_BATDEAD)
  318. reg |= I365_CSC_BVD1;
  319. if (state->csc_mask & SS_BATWARN)
  320. reg |= I365_CSC_BVD2;
  321. if (state->csc_mask & SS_READY)
  322. reg |= I365_CSC_READY;
  323. }
  324. exca_writeb(socket, I365_CSCINT, reg);
  325. exca_readb(socket, I365_CSC);
  326. if (sock->zoom_video)
  327. sock->zoom_video(sock, state->flags & SS_ZVCARD);
  328. }
  329. config_writew(socket, CB_BRIDGE_CONTROL, bridge);
  330. /* Socket event mask: get card insert/remove events.. */
  331. cb_writel(socket, CB_SOCKET_EVENT, -1);
  332. cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
  333. /* if powering up: do it as the last step when the socket is configured */
  334. if (state->Vcc != 0)
  335. yenta_set_power(socket, state);
  336. return 0;
  337. }
  338. static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
  339. {
  340. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  341. int map;
  342. unsigned char ioctl, addr, enable;
  343. map = io->map;
  344. if (map > 1)
  345. return -EINVAL;
  346. enable = I365_ENA_IO(map);
  347. addr = exca_readb(socket, I365_ADDRWIN);
  348. /* Disable the window before changing it.. */
  349. if (addr & enable) {
  350. addr &= ~enable;
  351. exca_writeb(socket, I365_ADDRWIN, addr);
  352. }
  353. exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
  354. exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
  355. ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
  356. if (io->flags & MAP_0WS)
  357. ioctl |= I365_IOCTL_0WS(map);
  358. if (io->flags & MAP_16BIT)
  359. ioctl |= I365_IOCTL_16BIT(map);
  360. if (io->flags & MAP_AUTOSZ)
  361. ioctl |= I365_IOCTL_IOCS16(map);
  362. exca_writeb(socket, I365_IOCTL, ioctl);
  363. if (io->flags & MAP_ACTIVE)
  364. exca_writeb(socket, I365_ADDRWIN, addr | enable);
  365. return 0;
  366. }
  367. static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
  368. {
  369. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  370. struct pci_bus_region region;
  371. int map;
  372. unsigned char addr, enable;
  373. unsigned int start, stop, card_start;
  374. unsigned short word;
  375. pcibios_resource_to_bus(socket->dev, &region, mem->res);
  376. map = mem->map;
  377. start = region.start;
  378. stop = region.end;
  379. card_start = mem->card_start;
  380. if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
  381. (card_start >> 26) || mem->speed > 1000)
  382. return -EINVAL;
  383. enable = I365_ENA_MEM(map);
  384. addr = exca_readb(socket, I365_ADDRWIN);
  385. if (addr & enable) {
  386. addr &= ~enable;
  387. exca_writeb(socket, I365_ADDRWIN, addr);
  388. }
  389. exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
  390. word = (start >> 12) & 0x0fff;
  391. if (mem->flags & MAP_16BIT)
  392. word |= I365_MEM_16BIT;
  393. if (mem->flags & MAP_0WS)
  394. word |= I365_MEM_0WS;
  395. exca_writew(socket, I365_MEM(map) + I365_W_START, word);
  396. word = (stop >> 12) & 0x0fff;
  397. switch (to_cycles(mem->speed)) {
  398. case 0:
  399. break;
  400. case 1:
  401. word |= I365_MEM_WS0;
  402. break;
  403. case 2:
  404. word |= I365_MEM_WS1;
  405. break;
  406. default:
  407. word |= I365_MEM_WS1 | I365_MEM_WS0;
  408. break;
  409. }
  410. exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
  411. word = ((card_start - start) >> 12) & 0x3fff;
  412. if (mem->flags & MAP_WRPROT)
  413. word |= I365_MEM_WRPROT;
  414. if (mem->flags & MAP_ATTRIB)
  415. word |= I365_MEM_REG;
  416. exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
  417. if (mem->flags & MAP_ACTIVE)
  418. exca_writeb(socket, I365_ADDRWIN, addr | enable);
  419. return 0;
  420. }
  421. static irqreturn_t yenta_interrupt(int irq, void *dev_id)
  422. {
  423. unsigned int events;
  424. struct yenta_socket *socket = (struct yenta_socket *) dev_id;
  425. u8 csc;
  426. u32 cb_event;
  427. /* Clear interrupt status for the event */
  428. cb_event = cb_readl(socket, CB_SOCKET_EVENT);
  429. cb_writel(socket, CB_SOCKET_EVENT, cb_event);
  430. csc = exca_readb(socket, I365_CSC);
  431. if (!(cb_event || csc))
  432. return IRQ_NONE;
  433. events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
  434. events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
  435. if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
  436. events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
  437. } else {
  438. events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
  439. events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
  440. events |= (csc & I365_CSC_READY) ? SS_READY : 0;
  441. }
  442. if (events)
  443. pcmcia_parse_events(&socket->socket, events);
  444. return IRQ_HANDLED;
  445. }
  446. static void yenta_interrupt_wrapper(unsigned long data)
  447. {
  448. struct yenta_socket *socket = (struct yenta_socket *) data;
  449. yenta_interrupt(0, (void *)socket);
  450. socket->poll_timer.expires = jiffies + HZ;
  451. add_timer(&socket->poll_timer);
  452. }
  453. static void yenta_clear_maps(struct yenta_socket *socket)
  454. {
  455. int i;
  456. struct resource res = { .start = 0, .end = 0x0fff };
  457. pccard_io_map io = { 0, 0, 0, 0, 1 };
  458. pccard_mem_map mem = { .res = &res, };
  459. yenta_set_socket(&socket->socket, &dead_socket);
  460. for (i = 0; i < 2; i++) {
  461. io.map = i;
  462. yenta_set_io_map(&socket->socket, &io);
  463. }
  464. for (i = 0; i < 5; i++) {
  465. mem.map = i;
  466. yenta_set_mem_map(&socket->socket, &mem);
  467. }
  468. }
  469. /* redoes voltage interrogation if required */
  470. static void yenta_interrogate(struct yenta_socket *socket)
  471. {
  472. u32 state;
  473. state = cb_readl(socket, CB_SOCKET_STATE);
  474. if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
  475. (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
  476. ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
  477. cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
  478. }
  479. /* Called at resume and initialization events */
  480. static int yenta_sock_init(struct pcmcia_socket *sock)
  481. {
  482. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  483. exca_writeb(socket, I365_GBLCTL, 0x00);
  484. exca_writeb(socket, I365_GENCTL, 0x00);
  485. /* Redo card voltage interrogation */
  486. yenta_interrogate(socket);
  487. yenta_clear_maps(socket);
  488. if (socket->type && socket->type->sock_init)
  489. socket->type->sock_init(socket);
  490. /* Re-enable CSC interrupts */
  491. cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
  492. return 0;
  493. }
  494. static int yenta_sock_suspend(struct pcmcia_socket *sock)
  495. {
  496. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  497. /* Disable CSC interrupts */
  498. cb_writel(socket, CB_SOCKET_MASK, 0x0);
  499. return 0;
  500. }
  501. /*
  502. * Use an adaptive allocation for the memory resource,
  503. * sometimes the memory behind pci bridges is limited:
  504. * 1/8 of the size of the io window of the parent.
  505. * max 4 MB, min 16 kB. We try very hard to not get below
  506. * the "ACC" values, though.
  507. */
  508. #define BRIDGE_MEM_MAX (4*1024*1024)
  509. #define BRIDGE_MEM_ACC (128*1024)
  510. #define BRIDGE_MEM_MIN (16*1024)
  511. #define BRIDGE_IO_MAX 512
  512. #define BRIDGE_IO_ACC 256
  513. #define BRIDGE_IO_MIN 32
  514. #ifndef PCIBIOS_MIN_CARDBUS_IO
  515. #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
  516. #endif
  517. static int yenta_search_one_res(struct resource *root, struct resource *res,
  518. u32 min)
  519. {
  520. u32 align, size, start, end;
  521. if (res->flags & IORESOURCE_IO) {
  522. align = 1024;
  523. size = BRIDGE_IO_MAX;
  524. start = PCIBIOS_MIN_CARDBUS_IO;
  525. end = ~0U;
  526. } else {
  527. unsigned long avail = root->end - root->start;
  528. int i;
  529. size = BRIDGE_MEM_MAX;
  530. if (size > avail/8) {
  531. size = (avail+1)/8;
  532. /* round size down to next power of 2 */
  533. i = 0;
  534. while ((size /= 2) != 0)
  535. i++;
  536. size = 1 << i;
  537. }
  538. if (size < min)
  539. size = min;
  540. align = size;
  541. start = PCIBIOS_MIN_MEM;
  542. end = ~0U;
  543. }
  544. do {
  545. if (allocate_resource(root, res, size, start, end, align,
  546. NULL, NULL) == 0) {
  547. return 1;
  548. }
  549. size = size/2;
  550. align = size;
  551. } while (size >= min);
  552. return 0;
  553. }
  554. static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
  555. u32 min)
  556. {
  557. int i;
  558. for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
  559. struct resource *root = socket->dev->bus->resource[i];
  560. if (!root)
  561. continue;
  562. if ((res->flags ^ root->flags) &
  563. (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
  564. continue; /* Wrong type */
  565. if (yenta_search_one_res(root, res, min))
  566. return 1;
  567. }
  568. return 0;
  569. }
  570. static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
  571. {
  572. struct pci_dev *dev = socket->dev;
  573. struct resource *res;
  574. struct pci_bus_region region;
  575. unsigned mask;
  576. res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
  577. /* Already allocated? */
  578. if (res->parent)
  579. return 0;
  580. /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
  581. mask = ~0xfff;
  582. if (type & IORESOURCE_IO)
  583. mask = ~3;
  584. res->name = dev->subordinate->name;
  585. res->flags = type;
  586. region.start = config_readl(socket, addr_start) & mask;
  587. region.end = config_readl(socket, addr_end) | ~mask;
  588. if (region.start && region.end > region.start && !override_bios) {
  589. pcibios_bus_to_resource(dev, res, &region);
  590. if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
  591. return 0;
  592. dev_printk(KERN_INFO, &dev->dev,
  593. "Preassigned resource %d busy or not available, "
  594. "reconfiguring...\n",
  595. nr);
  596. }
  597. if (type & IORESOURCE_IO) {
  598. if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
  599. (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
  600. (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
  601. return 1;
  602. } else {
  603. if (type & IORESOURCE_PREFETCH) {
  604. if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
  605. (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
  606. (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
  607. return 1;
  608. /* Approximating prefetchable by non-prefetchable */
  609. res->flags = IORESOURCE_MEM;
  610. }
  611. if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
  612. (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
  613. (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
  614. return 1;
  615. }
  616. dev_printk(KERN_INFO, &dev->dev,
  617. "no resource of type %x available, trying to continue...\n",
  618. type);
  619. res->start = res->end = res->flags = 0;
  620. return 0;
  621. }
  622. /*
  623. * Allocate the bridge mappings for the device..
  624. */
  625. static void yenta_allocate_resources(struct yenta_socket *socket)
  626. {
  627. int program = 0;
  628. program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
  629. PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
  630. program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
  631. PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
  632. program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
  633. PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
  634. program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
  635. PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
  636. if (program)
  637. pci_setup_cardbus(socket->dev->subordinate);
  638. }
  639. /*
  640. * Free the bridge mappings for the device..
  641. */
  642. static void yenta_free_resources(struct yenta_socket *socket)
  643. {
  644. int i;
  645. for (i = 0; i < 4; i++) {
  646. struct resource *res;
  647. res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
  648. if (res->start != 0 && res->end != 0)
  649. release_resource(res);
  650. res->start = res->end = res->flags = 0;
  651. }
  652. }
  653. /*
  654. * Close it down - release our resources and go home..
  655. */
  656. static void __devexit yenta_close(struct pci_dev *dev)
  657. {
  658. struct yenta_socket *sock = pci_get_drvdata(dev);
  659. /* Remove the register attributes */
  660. device_remove_file(&dev->dev, &dev_attr_yenta_registers);
  661. /* we don't want a dying socket registered */
  662. pcmcia_unregister_socket(&sock->socket);
  663. /* Disable all events so we don't die in an IRQ storm */
  664. cb_writel(sock, CB_SOCKET_MASK, 0x0);
  665. exca_writeb(sock, I365_CSCINT, 0);
  666. if (sock->cb_irq)
  667. free_irq(sock->cb_irq, sock);
  668. else
  669. del_timer_sync(&sock->poll_timer);
  670. if (sock->base)
  671. iounmap(sock->base);
  672. yenta_free_resources(sock);
  673. pci_release_regions(dev);
  674. pci_disable_device(dev);
  675. pci_set_drvdata(dev, NULL);
  676. }
  677. static struct pccard_operations yenta_socket_operations = {
  678. .init = yenta_sock_init,
  679. .suspend = yenta_sock_suspend,
  680. .get_status = yenta_get_status,
  681. .set_socket = yenta_set_socket,
  682. .set_io_map = yenta_set_io_map,
  683. .set_mem_map = yenta_set_mem_map,
  684. };
  685. #ifdef CONFIG_YENTA_TI
  686. #include "ti113x.h"
  687. #endif
  688. #ifdef CONFIG_YENTA_RICOH
  689. #include "ricoh.h"
  690. #endif
  691. #ifdef CONFIG_YENTA_TOSHIBA
  692. #include "topic.h"
  693. #endif
  694. #ifdef CONFIG_YENTA_O2
  695. #include "o2micro.h"
  696. #endif
  697. enum {
  698. CARDBUS_TYPE_DEFAULT = -1,
  699. CARDBUS_TYPE_TI,
  700. CARDBUS_TYPE_TI113X,
  701. CARDBUS_TYPE_TI12XX,
  702. CARDBUS_TYPE_TI1250,
  703. CARDBUS_TYPE_RICOH,
  704. CARDBUS_TYPE_TOPIC95,
  705. CARDBUS_TYPE_TOPIC97,
  706. CARDBUS_TYPE_O2MICRO,
  707. CARDBUS_TYPE_ENE,
  708. };
  709. /*
  710. * Different cardbus controllers have slightly different
  711. * initialization sequences etc details. List them here..
  712. */
  713. static struct cardbus_type cardbus_type[] = {
  714. #ifdef CONFIG_YENTA_TI
  715. [CARDBUS_TYPE_TI] = {
  716. .override = ti_override,
  717. .save_state = ti_save_state,
  718. .restore_state = ti_restore_state,
  719. .sock_init = ti_init,
  720. },
  721. [CARDBUS_TYPE_TI113X] = {
  722. .override = ti113x_override,
  723. .save_state = ti_save_state,
  724. .restore_state = ti_restore_state,
  725. .sock_init = ti_init,
  726. },
  727. [CARDBUS_TYPE_TI12XX] = {
  728. .override = ti12xx_override,
  729. .save_state = ti_save_state,
  730. .restore_state = ti_restore_state,
  731. .sock_init = ti_init,
  732. },
  733. [CARDBUS_TYPE_TI1250] = {
  734. .override = ti1250_override,
  735. .save_state = ti_save_state,
  736. .restore_state = ti_restore_state,
  737. .sock_init = ti_init,
  738. },
  739. #endif
  740. #ifdef CONFIG_YENTA_RICOH
  741. [CARDBUS_TYPE_RICOH] = {
  742. .override = ricoh_override,
  743. .save_state = ricoh_save_state,
  744. .restore_state = ricoh_restore_state,
  745. },
  746. #endif
  747. #ifdef CONFIG_YENTA_TOSHIBA
  748. [CARDBUS_TYPE_TOPIC95] = {
  749. .override = topic95_override,
  750. },
  751. [CARDBUS_TYPE_TOPIC97] = {
  752. .override = topic97_override,
  753. },
  754. #endif
  755. #ifdef CONFIG_YENTA_O2
  756. [CARDBUS_TYPE_O2MICRO] = {
  757. .override = o2micro_override,
  758. .restore_state = o2micro_restore_state,
  759. },
  760. #endif
  761. #ifdef CONFIG_YENTA_TI
  762. [CARDBUS_TYPE_ENE] = {
  763. .override = ene_override,
  764. .save_state = ti_save_state,
  765. .restore_state = ti_restore_state,
  766. .sock_init = ti_init,
  767. },
  768. #endif
  769. };
  770. /*
  771. * Only probe "regular" interrupts, don't
  772. * touch dangerous spots like the mouse irq,
  773. * because there are mice that apparently
  774. * get really confused if they get fondled
  775. * too intimately.
  776. *
  777. * Default to 11, 10, 9, 7, 6, 5, 4, 3.
  778. */
  779. static u32 isa_interrupts = 0x0ef8;
  780. static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
  781. {
  782. int i;
  783. unsigned long val;
  784. u32 mask;
  785. /*
  786. * Probe for usable interrupts using the force
  787. * register to generate bogus card status events.
  788. */
  789. cb_writel(socket, CB_SOCKET_EVENT, -1);
  790. cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
  791. exca_writeb(socket, I365_CSCINT, 0);
  792. val = probe_irq_on() & isa_irq_mask;
  793. for (i = 1; i < 16; i++) {
  794. if (!((val >> i) & 1))
  795. continue;
  796. exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
  797. cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
  798. udelay(100);
  799. cb_writel(socket, CB_SOCKET_EVENT, -1);
  800. }
  801. cb_writel(socket, CB_SOCKET_MASK, 0);
  802. exca_writeb(socket, I365_CSCINT, 0);
  803. mask = probe_irq_mask(val) & 0xffff;
  804. return mask;
  805. }
  806. /*
  807. * yenta PCI irq probing.
  808. * currently only used in the TI/EnE initialization code
  809. */
  810. #ifdef CONFIG_YENTA_TI
  811. /* interrupt handler, only used during probing */
  812. static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
  813. {
  814. struct yenta_socket *socket = (struct yenta_socket *) dev_id;
  815. u8 csc;
  816. u32 cb_event;
  817. /* Clear interrupt status for the event */
  818. cb_event = cb_readl(socket, CB_SOCKET_EVENT);
  819. cb_writel(socket, CB_SOCKET_EVENT, -1);
  820. csc = exca_readb(socket, I365_CSC);
  821. if (cb_event || csc) {
  822. socket->probe_status = 1;
  823. return IRQ_HANDLED;
  824. }
  825. return IRQ_NONE;
  826. }
  827. /* probes the PCI interrupt, use only on override functions */
  828. static int yenta_probe_cb_irq(struct yenta_socket *socket)
  829. {
  830. if (!socket->cb_irq)
  831. return -1;
  832. socket->probe_status = 0;
  833. if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
  834. dev_printk(KERN_WARNING, &socket->dev->dev,
  835. "request_irq() in yenta_probe_cb_irq() failed!\n");
  836. return -1;
  837. }
  838. /* generate interrupt, wait */
  839. exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
  840. cb_writel(socket, CB_SOCKET_EVENT, -1);
  841. cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
  842. cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
  843. msleep(100);
  844. /* disable interrupts */
  845. cb_writel(socket, CB_SOCKET_MASK, 0);
  846. exca_writeb(socket, I365_CSCINT, 0);
  847. cb_writel(socket, CB_SOCKET_EVENT, -1);
  848. exca_readb(socket, I365_CSC);
  849. free_irq(socket->cb_irq, socket);
  850. return (int) socket->probe_status;
  851. }
  852. #endif /* CONFIG_YENTA_TI */
  853. /*
  854. * Set static data that doesn't need re-initializing..
  855. */
  856. static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
  857. {
  858. socket->socket.pci_irq = socket->cb_irq;
  859. if (isa_probe)
  860. socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
  861. else
  862. socket->socket.irq_mask = 0;
  863. dev_printk(KERN_INFO, &socket->dev->dev,
  864. "ISA IRQ mask 0x%04x, PCI irq %d\n",
  865. socket->socket.irq_mask, socket->cb_irq);
  866. }
  867. /*
  868. * Initialize the standard cardbus registers
  869. */
  870. static void yenta_config_init(struct yenta_socket *socket)
  871. {
  872. u16 bridge;
  873. struct pci_dev *dev = socket->dev;
  874. struct pci_bus_region region;
  875. pcibios_resource_to_bus(socket->dev, &region, &dev->resource[0]);
  876. config_writel(socket, CB_LEGACY_MODE_BASE, 0);
  877. config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
  878. config_writew(socket, PCI_COMMAND,
  879. PCI_COMMAND_IO |
  880. PCI_COMMAND_MEMORY |
  881. PCI_COMMAND_MASTER |
  882. PCI_COMMAND_WAIT);
  883. /* MAGIC NUMBERS! Fixme */
  884. config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
  885. config_writeb(socket, PCI_LATENCY_TIMER, 168);
  886. config_writel(socket, PCI_PRIMARY_BUS,
  887. (176 << 24) | /* sec. latency timer */
  888. (dev->subordinate->subordinate << 16) | /* subordinate bus */
  889. (dev->subordinate->secondary << 8) | /* secondary bus */
  890. dev->subordinate->primary); /* primary bus */
  891. /*
  892. * Set up the bridging state:
  893. * - enable write posting.
  894. * - memory window 0 prefetchable, window 1 non-prefetchable
  895. * - PCI interrupts enabled if a PCI interrupt exists..
  896. */
  897. bridge = config_readw(socket, CB_BRIDGE_CONTROL);
  898. bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
  899. bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
  900. config_writew(socket, CB_BRIDGE_CONTROL, bridge);
  901. }
  902. /**
  903. * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
  904. * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
  905. *
  906. * Checks if devices on the bus which the CardBus bridge bridges to would be
  907. * invisible during PCI scans because of a misconfigured subordinate number
  908. * of the parent brige - some BIOSes seem to be too lazy to set it right.
  909. * Does the fixup carefully by checking how far it can go without conflicts.
  910. * See http\://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
  911. */
  912. static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
  913. {
  914. struct list_head *tmp;
  915. unsigned char upper_limit;
  916. /*
  917. * We only check and fix the parent bridge: All systems which need
  918. * this fixup that have been reviewed are laptops and the only bridge
  919. * which needed fixing was the parent bridge of the CardBus bridge:
  920. */
  921. struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
  922. /* Check bus numbers are already set up correctly: */
  923. if (bridge_to_fix->subordinate >= cardbus_bridge->subordinate)
  924. return; /* The subordinate number is ok, nothing to do */
  925. if (!bridge_to_fix->parent)
  926. return; /* Root bridges are ok */
  927. /* stay within the limits of the bus range of the parent: */
  928. upper_limit = bridge_to_fix->parent->subordinate;
  929. /* check the bus ranges of all silbling bridges to prevent overlap */
  930. list_for_each(tmp, &bridge_to_fix->parent->children) {
  931. struct pci_bus *silbling = pci_bus_b(tmp);
  932. /*
  933. * If the silbling has a higher secondary bus number
  934. * and it's secondary is equal or smaller than our
  935. * current upper limit, set the new upper limit to
  936. * the bus number below the silbling's range:
  937. */
  938. if (silbling->secondary > bridge_to_fix->subordinate
  939. && silbling->secondary <= upper_limit)
  940. upper_limit = silbling->secondary - 1;
  941. }
  942. /* Show that the wanted subordinate number is not possible: */
  943. if (cardbus_bridge->subordinate > upper_limit)
  944. dev_printk(KERN_WARNING, &cardbus_bridge->dev,
  945. "Upper limit for fixing this "
  946. "bridge's parent bridge: #%02x\n", upper_limit);
  947. /* If we have room to increase the bridge's subordinate number, */
  948. if (bridge_to_fix->subordinate < upper_limit) {
  949. /* use the highest number of the hidden bus, within limits */
  950. unsigned char subordinate_to_assign =
  951. min(cardbus_bridge->subordinate, upper_limit);
  952. dev_printk(KERN_INFO, &bridge_to_fix->dev,
  953. "Raising subordinate bus# of parent "
  954. "bus (#%02x) from #%02x to #%02x\n",
  955. bridge_to_fix->number,
  956. bridge_to_fix->subordinate, subordinate_to_assign);
  957. /* Save the new subordinate in the bus struct of the bridge */
  958. bridge_to_fix->subordinate = subordinate_to_assign;
  959. /* and update the PCI config space with the new subordinate */
  960. pci_write_config_byte(bridge_to_fix->self,
  961. PCI_SUBORDINATE_BUS, bridge_to_fix->subordinate);
  962. }
  963. }
  964. /*
  965. * Initialize a cardbus controller. Make sure we have a usable
  966. * interrupt, and that we can map the cardbus area. Fill in the
  967. * socket information structure..
  968. */
  969. static int __devinit yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
  970. {
  971. struct yenta_socket *socket;
  972. int ret;
  973. /*
  974. * If we failed to assign proper bus numbers for this cardbus
  975. * controller during PCI probe, its subordinate pci_bus is NULL.
  976. * Bail out if so.
  977. */
  978. if (!dev->subordinate) {
  979. dev_printk(KERN_ERR, &dev->dev, "no bus associated! "
  980. "(try 'pci=assign-busses')\n");
  981. return -ENODEV;
  982. }
  983. socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
  984. if (!socket)
  985. return -ENOMEM;
  986. /* prepare pcmcia_socket */
  987. socket->socket.ops = &yenta_socket_operations;
  988. socket->socket.resource_ops = &pccard_nonstatic_ops;
  989. socket->socket.dev.parent = &dev->dev;
  990. socket->socket.driver_data = socket;
  991. socket->socket.owner = THIS_MODULE;
  992. socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
  993. socket->socket.map_size = 0x1000;
  994. socket->socket.cb_dev = dev;
  995. /* prepare struct yenta_socket */
  996. socket->dev = dev;
  997. pci_set_drvdata(dev, socket);
  998. /*
  999. * Do some basic sanity checking..
  1000. */
  1001. if (pci_enable_device(dev)) {
  1002. ret = -EBUSY;
  1003. goto free;
  1004. }
  1005. ret = pci_request_regions(dev, "yenta_socket");
  1006. if (ret)
  1007. goto disable;
  1008. if (!pci_resource_start(dev, 0)) {
  1009. dev_printk(KERN_ERR, &dev->dev, "No cardbus resource!\n");
  1010. ret = -ENODEV;
  1011. goto release;
  1012. }
  1013. /*
  1014. * Ok, start setup.. Map the cardbus registers,
  1015. * and request the IRQ.
  1016. */
  1017. socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
  1018. if (!socket->base) {
  1019. ret = -ENOMEM;
  1020. goto release;
  1021. }
  1022. /*
  1023. * report the subsystem vendor and device for help debugging
  1024. * the irq stuff...
  1025. */
  1026. dev_printk(KERN_INFO, &dev->dev, "CardBus bridge found [%04x:%04x]\n",
  1027. dev->subsystem_vendor, dev->subsystem_device);
  1028. yenta_config_init(socket);
  1029. /* Disable all events */
  1030. cb_writel(socket, CB_SOCKET_MASK, 0x0);
  1031. /* Set up the bridge regions.. */
  1032. yenta_allocate_resources(socket);
  1033. socket->cb_irq = dev->irq;
  1034. /* Do we have special options for the device? */
  1035. if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
  1036. id->driver_data < ARRAY_SIZE(cardbus_type)) {
  1037. socket->type = &cardbus_type[id->driver_data];
  1038. ret = socket->type->override(socket);
  1039. if (ret < 0)
  1040. goto unmap;
  1041. }
  1042. /* We must finish initialization here */
  1043. if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
  1044. /* No IRQ or request_irq failed. Poll */
  1045. socket->cb_irq = 0; /* But zero is a valid IRQ number. */
  1046. init_timer(&socket->poll_timer);
  1047. socket->poll_timer.function = yenta_interrupt_wrapper;
  1048. socket->poll_timer.data = (unsigned long)socket;
  1049. socket->poll_timer.expires = jiffies + HZ;
  1050. add_timer(&socket->poll_timer);
  1051. dev_printk(KERN_INFO, &dev->dev,
  1052. "no PCI IRQ, CardBus support disabled for this "
  1053. "socket.\n");
  1054. dev_printk(KERN_INFO, &dev->dev,
  1055. "check your BIOS CardBus, BIOS IRQ or ACPI "
  1056. "settings.\n");
  1057. } else {
  1058. socket->socket.features |= SS_CAP_CARDBUS;
  1059. }
  1060. /* Figure out what the dang thing can do for the PCMCIA layer... */
  1061. yenta_interrogate(socket);
  1062. yenta_get_socket_capabilities(socket, isa_interrupts);
  1063. dev_printk(KERN_INFO, &dev->dev,
  1064. "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
  1065. yenta_fixup_parent_bridge(dev->subordinate);
  1066. /* Register it with the pcmcia layer.. */
  1067. ret = pcmcia_register_socket(&socket->socket);
  1068. if (ret == 0) {
  1069. /* Add the yenta register attributes */
  1070. ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
  1071. if (ret == 0)
  1072. goto out;
  1073. /* error path... */
  1074. pcmcia_unregister_socket(&socket->socket);
  1075. }
  1076. unmap:
  1077. iounmap(socket->base);
  1078. release:
  1079. pci_release_regions(dev);
  1080. disable:
  1081. pci_disable_device(dev);
  1082. free:
  1083. kfree(socket);
  1084. out:
  1085. return ret;
  1086. }
  1087. #ifdef CONFIG_PM
  1088. static int yenta_dev_suspend_noirq(struct device *dev)
  1089. {
  1090. struct pci_dev *pdev = to_pci_dev(dev);
  1091. struct yenta_socket *socket = pci_get_drvdata(pdev);
  1092. int ret;
  1093. ret = pcmcia_socket_dev_suspend(dev);
  1094. if (!socket)
  1095. return ret;
  1096. if (socket->type && socket->type->save_state)
  1097. socket->type->save_state(socket);
  1098. pci_save_state(pdev);
  1099. pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
  1100. pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
  1101. pci_disable_device(pdev);
  1102. /*
  1103. * Some laptops (IBM T22) do not like us putting the Cardbus
  1104. * bridge into D3. At a guess, some other laptop will
  1105. * probably require this, so leave it commented out for now.
  1106. */
  1107. /* pci_set_power_state(dev, 3); */
  1108. return ret;
  1109. }
  1110. static int yenta_dev_resume_noirq(struct device *dev)
  1111. {
  1112. struct pci_dev *pdev = to_pci_dev(dev);
  1113. struct yenta_socket *socket = pci_get_drvdata(pdev);
  1114. int ret;
  1115. if (!socket)
  1116. return 0;
  1117. pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
  1118. pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
  1119. ret = pci_enable_device(pdev);
  1120. if (ret)
  1121. return ret;
  1122. pci_set_master(pdev);
  1123. if (socket->type && socket->type->restore_state)
  1124. socket->type->restore_state(socket);
  1125. pcmcia_socket_dev_early_resume(dev);
  1126. return 0;
  1127. }
  1128. static int yenta_dev_resume(struct device *dev)
  1129. {
  1130. pcmcia_socket_dev_late_resume(dev);
  1131. return 0;
  1132. }
  1133. static const struct dev_pm_ops yenta_pm_ops = {
  1134. .suspend_noirq = yenta_dev_suspend_noirq,
  1135. .resume_noirq = yenta_dev_resume_noirq,
  1136. .resume = yenta_dev_resume,
  1137. .freeze_noirq = yenta_dev_suspend_noirq,
  1138. .thaw_noirq = yenta_dev_resume_noirq,
  1139. .thaw = yenta_dev_resume,
  1140. .poweroff_noirq = yenta_dev_suspend_noirq,
  1141. .restore_noirq = yenta_dev_resume_noirq,
  1142. .restore = yenta_dev_resume,
  1143. };
  1144. #define YENTA_PM_OPS (&yenta_pm_ops)
  1145. #else
  1146. #define YENTA_PM_OPS NULL
  1147. #endif
  1148. #define CB_ID(vend, dev, type) \
  1149. { \
  1150. .vendor = vend, \
  1151. .device = dev, \
  1152. .subvendor = PCI_ANY_ID, \
  1153. .subdevice = PCI_ANY_ID, \
  1154. .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
  1155. .class_mask = ~0, \
  1156. .driver_data = CARDBUS_TYPE_##type, \
  1157. }
  1158. static struct pci_device_id yenta_table[] = {
  1159. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
  1160. /*
  1161. * TBD: Check if these TI variants can use more
  1162. * advanced overrides instead. (I can't get the
  1163. * data sheets for these devices. --rmk)
  1164. */
  1165. #ifdef CONFIG_YENTA_TI
  1166. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
  1167. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
  1168. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
  1169. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
  1170. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
  1171. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
  1172. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
  1173. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
  1174. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
  1175. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
  1176. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
  1177. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
  1178. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
  1179. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
  1180. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
  1181. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
  1182. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
  1183. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
  1184. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
  1185. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
  1186. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
  1187. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
  1188. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
  1189. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
  1190. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
  1191. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
  1192. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
  1193. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
  1194. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
  1195. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
  1196. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, TI12XX),
  1197. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, TI12XX),
  1198. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, TI12XX),
  1199. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, TI12XX),
  1200. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
  1201. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
  1202. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
  1203. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
  1204. #endif /* CONFIG_YENTA_TI */
  1205. #ifdef CONFIG_YENTA_RICOH
  1206. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
  1207. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
  1208. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
  1209. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
  1210. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
  1211. #endif
  1212. #ifdef CONFIG_YENTA_TOSHIBA
  1213. CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
  1214. CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
  1215. CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
  1216. #endif
  1217. #ifdef CONFIG_YENTA_O2
  1218. CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
  1219. #endif
  1220. /* match any cardbus bridge */
  1221. CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
  1222. { /* all zeroes */ }
  1223. };
  1224. MODULE_DEVICE_TABLE(pci, yenta_table);
  1225. static struct pci_driver yenta_cardbus_driver = {
  1226. .name = "yenta_cardbus",
  1227. .id_table = yenta_table,
  1228. .probe = yenta_probe,
  1229. .remove = __devexit_p(yenta_close),
  1230. .driver.pm = YENTA_PM_OPS,
  1231. };
  1232. static int __init yenta_socket_init(void)
  1233. {
  1234. return pci_register_driver(&yenta_cardbus_driver);
  1235. }
  1236. static void __exit yenta_socket_exit(void)
  1237. {
  1238. pci_unregister_driver(&yenta_cardbus_driver);
  1239. }
  1240. module_init(yenta_socket_init);
  1241. module_exit(yenta_socket_exit);
  1242. MODULE_LICENSE("GPL");