yenta_socket.c 40 KB

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  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. static char o2_speedup[] = "default";
  35. module_param_string(o2_speedup, o2_speedup, sizeof(o2_speedup), 0444);
  36. MODULE_PARM_DESC(o2_speedup, "Use prefetch/burst for O2-bridges: 'on', 'off' "
  37. "or 'default' (uses recommended behaviour for the detected bridge)");
  38. #define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
  39. /* Don't ask.. */
  40. #define to_cycles(ns) ((ns)/120)
  41. #define to_ns(cycles) ((cycles)*120)
  42. /*
  43. * yenta PCI irq probing.
  44. * currently only used in the TI/EnE initialization code
  45. */
  46. #ifdef CONFIG_YENTA_TI
  47. static int yenta_probe_cb_irq(struct yenta_socket *socket);
  48. #endif
  49. static unsigned int override_bios;
  50. module_param(override_bios, uint, 0000);
  51. MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
  52. /*
  53. * Generate easy-to-use ways of reading a cardbus sockets
  54. * regular memory space ("cb_xxx"), configuration space
  55. * ("config_xxx") and compatibility space ("exca_xxxx")
  56. */
  57. static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
  58. {
  59. u32 val = readl(socket->base + reg);
  60. debug("%04x %08x\n", socket, reg, val);
  61. return val;
  62. }
  63. static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
  64. {
  65. debug("%04x %08x\n", socket, reg, val);
  66. writel(val, socket->base + reg);
  67. readl(socket->base + reg); /* avoid problems with PCI write posting */
  68. }
  69. static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
  70. {
  71. u8 val;
  72. pci_read_config_byte(socket->dev, offset, &val);
  73. debug("%04x %02x\n", socket, offset, val);
  74. return val;
  75. }
  76. static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
  77. {
  78. u16 val;
  79. pci_read_config_word(socket->dev, offset, &val);
  80. debug("%04x %04x\n", socket, offset, val);
  81. return val;
  82. }
  83. static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
  84. {
  85. u32 val;
  86. pci_read_config_dword(socket->dev, offset, &val);
  87. debug("%04x %08x\n", socket, offset, val);
  88. return val;
  89. }
  90. static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
  91. {
  92. debug("%04x %02x\n", socket, offset, val);
  93. pci_write_config_byte(socket->dev, offset, val);
  94. }
  95. static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
  96. {
  97. debug("%04x %04x\n", socket, offset, val);
  98. pci_write_config_word(socket->dev, offset, val);
  99. }
  100. static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
  101. {
  102. debug("%04x %08x\n", socket, offset, val);
  103. pci_write_config_dword(socket->dev, offset, val);
  104. }
  105. static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
  106. {
  107. u8 val = readb(socket->base + 0x800 + reg);
  108. debug("%04x %02x\n", socket, reg, val);
  109. return val;
  110. }
  111. static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
  112. {
  113. u16 val;
  114. val = readb(socket->base + 0x800 + reg);
  115. val |= readb(socket->base + 0x800 + reg + 1) << 8;
  116. debug("%04x %04x\n", socket, reg, val);
  117. return val;
  118. }
  119. static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
  120. {
  121. debug("%04x %02x\n", socket, reg, val);
  122. writeb(val, socket->base + 0x800 + reg);
  123. readb(socket->base + 0x800 + reg); /* PCI write posting... */
  124. }
  125. static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
  126. {
  127. debug("%04x %04x\n", socket, reg, val);
  128. writeb(val, socket->base + 0x800 + reg);
  129. writeb(val >> 8, socket->base + 0x800 + reg + 1);
  130. /* PCI write posting... */
  131. readb(socket->base + 0x800 + reg);
  132. readb(socket->base + 0x800 + reg + 1);
  133. }
  134. static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
  135. {
  136. struct pci_dev *dev = to_pci_dev(yentadev);
  137. struct yenta_socket *socket = pci_get_drvdata(dev);
  138. int offset = 0, i;
  139. offset = snprintf(buf, PAGE_SIZE, "CB registers:");
  140. for (i = 0; i < 0x24; i += 4) {
  141. unsigned val;
  142. if (!(i & 15))
  143. offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
  144. val = cb_readl(socket, i);
  145. offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
  146. }
  147. offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
  148. for (i = 0; i < 0x45; i++) {
  149. unsigned char val;
  150. if (!(i & 7)) {
  151. if (i & 8) {
  152. memcpy(buf + offset, " -", 2);
  153. offset += 2;
  154. } else
  155. offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
  156. }
  157. val = exca_readb(socket, i);
  158. offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
  159. }
  160. buf[offset++] = '\n';
  161. return offset;
  162. }
  163. static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
  164. /*
  165. * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
  166. * on what kind of card is inserted..
  167. */
  168. static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
  169. {
  170. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  171. unsigned int val;
  172. u32 state = cb_readl(socket, CB_SOCKET_STATE);
  173. val = (state & CB_3VCARD) ? SS_3VCARD : 0;
  174. val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
  175. val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
  176. val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
  177. if (state & CB_CBCARD) {
  178. val |= SS_CARDBUS;
  179. val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
  180. val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
  181. val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
  182. } else if (state & CB_16BITCARD) {
  183. u8 status = exca_readb(socket, I365_STATUS);
  184. val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
  185. if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
  186. val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
  187. } else {
  188. val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
  189. val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
  190. }
  191. val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
  192. val |= (status & I365_CS_READY) ? SS_READY : 0;
  193. val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
  194. }
  195. *value = val;
  196. return 0;
  197. }
  198. static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
  199. {
  200. /* some birdges require to use the ExCA registers to power 16bit cards */
  201. if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
  202. (socket->flags & YENTA_16BIT_POWER_EXCA)) {
  203. u8 reg, old;
  204. reg = old = exca_readb(socket, I365_POWER);
  205. reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
  206. /* i82365SL-DF style */
  207. if (socket->flags & YENTA_16BIT_POWER_DF) {
  208. switch (state->Vcc) {
  209. case 33:
  210. reg |= I365_VCC_3V;
  211. break;
  212. case 50:
  213. reg |= I365_VCC_5V;
  214. break;
  215. default:
  216. reg = 0;
  217. break;
  218. }
  219. switch (state->Vpp) {
  220. case 33:
  221. case 50:
  222. reg |= I365_VPP1_5V;
  223. break;
  224. case 120:
  225. reg |= I365_VPP1_12V;
  226. break;
  227. }
  228. } else {
  229. /* i82365SL-B style */
  230. switch (state->Vcc) {
  231. case 50:
  232. reg |= I365_VCC_5V;
  233. break;
  234. default:
  235. reg = 0;
  236. break;
  237. }
  238. switch (state->Vpp) {
  239. case 50:
  240. reg |= I365_VPP1_5V | I365_VPP2_5V;
  241. break;
  242. case 120:
  243. reg |= I365_VPP1_12V | I365_VPP2_12V;
  244. break;
  245. }
  246. }
  247. if (reg != old)
  248. exca_writeb(socket, I365_POWER, reg);
  249. } else {
  250. u32 reg = 0; /* CB_SC_STPCLK? */
  251. switch (state->Vcc) {
  252. case 33:
  253. reg = CB_SC_VCC_3V;
  254. break;
  255. case 50:
  256. reg = CB_SC_VCC_5V;
  257. break;
  258. default:
  259. reg = 0;
  260. break;
  261. }
  262. switch (state->Vpp) {
  263. case 33:
  264. reg |= CB_SC_VPP_3V;
  265. break;
  266. case 50:
  267. reg |= CB_SC_VPP_5V;
  268. break;
  269. case 120:
  270. reg |= CB_SC_VPP_12V;
  271. break;
  272. }
  273. if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
  274. cb_writel(socket, CB_SOCKET_CONTROL, reg);
  275. }
  276. }
  277. static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
  278. {
  279. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  280. u16 bridge;
  281. /* if powering down: do it immediately */
  282. if (state->Vcc == 0)
  283. yenta_set_power(socket, state);
  284. socket->io_irq = state->io_irq;
  285. bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
  286. if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
  287. u8 intr;
  288. bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
  289. /* ISA interrupt control? */
  290. intr = exca_readb(socket, I365_INTCTL);
  291. intr = (intr & ~0xf);
  292. if (!socket->cb_irq) {
  293. intr |= state->io_irq;
  294. bridge |= CB_BRIDGE_INTR;
  295. }
  296. exca_writeb(socket, I365_INTCTL, intr);
  297. } else {
  298. u8 reg;
  299. reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
  300. reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
  301. reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
  302. if (state->io_irq != socket->cb_irq) {
  303. reg |= state->io_irq;
  304. bridge |= CB_BRIDGE_INTR;
  305. }
  306. exca_writeb(socket, I365_INTCTL, reg);
  307. reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
  308. reg |= I365_PWR_NORESET;
  309. if (state->flags & SS_PWR_AUTO)
  310. reg |= I365_PWR_AUTO;
  311. if (state->flags & SS_OUTPUT_ENA)
  312. reg |= I365_PWR_OUT;
  313. if (exca_readb(socket, I365_POWER) != reg)
  314. exca_writeb(socket, I365_POWER, reg);
  315. /* CSC interrupt: no ISA irq for CSC */
  316. reg = I365_CSC_DETECT;
  317. if (state->flags & SS_IOCARD) {
  318. if (state->csc_mask & SS_STSCHG)
  319. reg |= I365_CSC_STSCHG;
  320. } else {
  321. if (state->csc_mask & SS_BATDEAD)
  322. reg |= I365_CSC_BVD1;
  323. if (state->csc_mask & SS_BATWARN)
  324. reg |= I365_CSC_BVD2;
  325. if (state->csc_mask & SS_READY)
  326. reg |= I365_CSC_READY;
  327. }
  328. exca_writeb(socket, I365_CSCINT, reg);
  329. exca_readb(socket, I365_CSC);
  330. if (sock->zoom_video)
  331. sock->zoom_video(sock, state->flags & SS_ZVCARD);
  332. }
  333. config_writew(socket, CB_BRIDGE_CONTROL, bridge);
  334. /* Socket event mask: get card insert/remove events.. */
  335. cb_writel(socket, CB_SOCKET_EVENT, -1);
  336. cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
  337. /* if powering up: do it as the last step when the socket is configured */
  338. if (state->Vcc != 0)
  339. yenta_set_power(socket, state);
  340. return 0;
  341. }
  342. static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
  343. {
  344. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  345. int map;
  346. unsigned char ioctl, addr, enable;
  347. map = io->map;
  348. if (map > 1)
  349. return -EINVAL;
  350. enable = I365_ENA_IO(map);
  351. addr = exca_readb(socket, I365_ADDRWIN);
  352. /* Disable the window before changing it.. */
  353. if (addr & enable) {
  354. addr &= ~enable;
  355. exca_writeb(socket, I365_ADDRWIN, addr);
  356. }
  357. exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
  358. exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
  359. ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
  360. if (io->flags & MAP_0WS)
  361. ioctl |= I365_IOCTL_0WS(map);
  362. if (io->flags & MAP_16BIT)
  363. ioctl |= I365_IOCTL_16BIT(map);
  364. if (io->flags & MAP_AUTOSZ)
  365. ioctl |= I365_IOCTL_IOCS16(map);
  366. exca_writeb(socket, I365_IOCTL, ioctl);
  367. if (io->flags & MAP_ACTIVE)
  368. exca_writeb(socket, I365_ADDRWIN, addr | enable);
  369. return 0;
  370. }
  371. static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
  372. {
  373. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  374. struct pci_bus_region region;
  375. int map;
  376. unsigned char addr, enable;
  377. unsigned int start, stop, card_start;
  378. unsigned short word;
  379. pcibios_resource_to_bus(socket->dev, &region, mem->res);
  380. map = mem->map;
  381. start = region.start;
  382. stop = region.end;
  383. card_start = mem->card_start;
  384. if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
  385. (card_start >> 26) || mem->speed > 1000)
  386. return -EINVAL;
  387. enable = I365_ENA_MEM(map);
  388. addr = exca_readb(socket, I365_ADDRWIN);
  389. if (addr & enable) {
  390. addr &= ~enable;
  391. exca_writeb(socket, I365_ADDRWIN, addr);
  392. }
  393. exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
  394. word = (start >> 12) & 0x0fff;
  395. if (mem->flags & MAP_16BIT)
  396. word |= I365_MEM_16BIT;
  397. if (mem->flags & MAP_0WS)
  398. word |= I365_MEM_0WS;
  399. exca_writew(socket, I365_MEM(map) + I365_W_START, word);
  400. word = (stop >> 12) & 0x0fff;
  401. switch (to_cycles(mem->speed)) {
  402. case 0:
  403. break;
  404. case 1:
  405. word |= I365_MEM_WS0;
  406. break;
  407. case 2:
  408. word |= I365_MEM_WS1;
  409. break;
  410. default:
  411. word |= I365_MEM_WS1 | I365_MEM_WS0;
  412. break;
  413. }
  414. exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
  415. word = ((card_start - start) >> 12) & 0x3fff;
  416. if (mem->flags & MAP_WRPROT)
  417. word |= I365_MEM_WRPROT;
  418. if (mem->flags & MAP_ATTRIB)
  419. word |= I365_MEM_REG;
  420. exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
  421. if (mem->flags & MAP_ACTIVE)
  422. exca_writeb(socket, I365_ADDRWIN, addr | enable);
  423. return 0;
  424. }
  425. static irqreturn_t yenta_interrupt(int irq, void *dev_id)
  426. {
  427. unsigned int events;
  428. struct yenta_socket *socket = (struct yenta_socket *) dev_id;
  429. u8 csc;
  430. u32 cb_event;
  431. /* Clear interrupt status for the event */
  432. cb_event = cb_readl(socket, CB_SOCKET_EVENT);
  433. cb_writel(socket, CB_SOCKET_EVENT, cb_event);
  434. csc = exca_readb(socket, I365_CSC);
  435. if (!(cb_event || csc))
  436. return IRQ_NONE;
  437. events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
  438. events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
  439. if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
  440. events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
  441. } else {
  442. events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
  443. events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
  444. events |= (csc & I365_CSC_READY) ? SS_READY : 0;
  445. }
  446. if (events)
  447. pcmcia_parse_events(&socket->socket, events);
  448. return IRQ_HANDLED;
  449. }
  450. static void yenta_interrupt_wrapper(unsigned long data)
  451. {
  452. struct yenta_socket *socket = (struct yenta_socket *) data;
  453. yenta_interrupt(0, (void *)socket);
  454. socket->poll_timer.expires = jiffies + HZ;
  455. add_timer(&socket->poll_timer);
  456. }
  457. static void yenta_clear_maps(struct yenta_socket *socket)
  458. {
  459. int i;
  460. struct resource res = { .start = 0, .end = 0x0fff };
  461. pccard_io_map io = { 0, 0, 0, 0, 1 };
  462. pccard_mem_map mem = { .res = &res, };
  463. yenta_set_socket(&socket->socket, &dead_socket);
  464. for (i = 0; i < 2; i++) {
  465. io.map = i;
  466. yenta_set_io_map(&socket->socket, &io);
  467. }
  468. for (i = 0; i < 5; i++) {
  469. mem.map = i;
  470. yenta_set_mem_map(&socket->socket, &mem);
  471. }
  472. }
  473. /* redoes voltage interrogation if required */
  474. static void yenta_interrogate(struct yenta_socket *socket)
  475. {
  476. u32 state;
  477. state = cb_readl(socket, CB_SOCKET_STATE);
  478. if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
  479. (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
  480. ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
  481. cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
  482. }
  483. /* Called at resume and initialization events */
  484. static int yenta_sock_init(struct pcmcia_socket *sock)
  485. {
  486. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  487. exca_writeb(socket, I365_GBLCTL, 0x00);
  488. exca_writeb(socket, I365_GENCTL, 0x00);
  489. /* Redo card voltage interrogation */
  490. yenta_interrogate(socket);
  491. yenta_clear_maps(socket);
  492. if (socket->type && socket->type->sock_init)
  493. socket->type->sock_init(socket);
  494. /* Re-enable CSC interrupts */
  495. cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
  496. return 0;
  497. }
  498. static int yenta_sock_suspend(struct pcmcia_socket *sock)
  499. {
  500. struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
  501. /* Disable CSC interrupts */
  502. cb_writel(socket, CB_SOCKET_MASK, 0x0);
  503. return 0;
  504. }
  505. /*
  506. * Use an adaptive allocation for the memory resource,
  507. * sometimes the memory behind pci bridges is limited:
  508. * 1/8 of the size of the io window of the parent.
  509. * max 4 MB, min 16 kB. We try very hard to not get below
  510. * the "ACC" values, though.
  511. */
  512. #define BRIDGE_MEM_MAX (4*1024*1024)
  513. #define BRIDGE_MEM_ACC (128*1024)
  514. #define BRIDGE_MEM_MIN (16*1024)
  515. #define BRIDGE_IO_MAX 512
  516. #define BRIDGE_IO_ACC 256
  517. #define BRIDGE_IO_MIN 32
  518. #ifndef PCIBIOS_MIN_CARDBUS_IO
  519. #define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
  520. #endif
  521. static int yenta_search_one_res(struct resource *root, struct resource *res,
  522. u32 min)
  523. {
  524. u32 align, size, start, end;
  525. if (res->flags & IORESOURCE_IO) {
  526. align = 1024;
  527. size = BRIDGE_IO_MAX;
  528. start = PCIBIOS_MIN_CARDBUS_IO;
  529. end = ~0U;
  530. } else {
  531. unsigned long avail = root->end - root->start;
  532. int i;
  533. size = BRIDGE_MEM_MAX;
  534. if (size > avail/8) {
  535. size = (avail+1)/8;
  536. /* round size down to next power of 2 */
  537. i = 0;
  538. while ((size /= 2) != 0)
  539. i++;
  540. size = 1 << i;
  541. }
  542. if (size < min)
  543. size = min;
  544. align = size;
  545. start = PCIBIOS_MIN_MEM;
  546. end = ~0U;
  547. }
  548. do {
  549. if (allocate_resource(root, res, size, start, end, align,
  550. NULL, NULL) == 0) {
  551. return 1;
  552. }
  553. size = size/2;
  554. align = size;
  555. } while (size >= min);
  556. return 0;
  557. }
  558. static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
  559. u32 min)
  560. {
  561. struct resource *root;
  562. int i;
  563. pci_bus_for_each_resource(socket->dev->bus, root, i) {
  564. if (!root)
  565. continue;
  566. if ((res->flags ^ root->flags) &
  567. (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
  568. continue; /* Wrong type */
  569. if (yenta_search_one_res(root, res, min))
  570. return 1;
  571. }
  572. return 0;
  573. }
  574. static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
  575. {
  576. struct pci_dev *dev = socket->dev;
  577. struct resource *res;
  578. struct pci_bus_region region;
  579. unsigned mask;
  580. res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
  581. /* Already allocated? */
  582. if (res->parent)
  583. return 0;
  584. /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
  585. mask = ~0xfff;
  586. if (type & IORESOURCE_IO)
  587. mask = ~3;
  588. res->name = dev->subordinate->name;
  589. res->flags = type;
  590. region.start = config_readl(socket, addr_start) & mask;
  591. region.end = config_readl(socket, addr_end) | ~mask;
  592. if (region.start && region.end > region.start && !override_bios) {
  593. pcibios_bus_to_resource(dev, res, &region);
  594. if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
  595. return 0;
  596. dev_printk(KERN_INFO, &dev->dev,
  597. "Preassigned resource %d busy or not available, "
  598. "reconfiguring...\n",
  599. nr);
  600. }
  601. if (type & IORESOURCE_IO) {
  602. if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
  603. (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
  604. (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
  605. return 1;
  606. } else {
  607. if (type & IORESOURCE_PREFETCH) {
  608. if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
  609. (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
  610. (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
  611. return 1;
  612. /* Approximating prefetchable by non-prefetchable */
  613. res->flags = IORESOURCE_MEM;
  614. }
  615. if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
  616. (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
  617. (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
  618. return 1;
  619. }
  620. dev_printk(KERN_INFO, &dev->dev,
  621. "no resource of type %x available, trying to continue...\n",
  622. type);
  623. res->start = res->end = res->flags = 0;
  624. return 0;
  625. }
  626. /*
  627. * Allocate the bridge mappings for the device..
  628. */
  629. static void yenta_allocate_resources(struct yenta_socket *socket)
  630. {
  631. int program = 0;
  632. program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
  633. PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
  634. program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
  635. PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
  636. program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
  637. PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
  638. program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
  639. PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
  640. if (program)
  641. pci_setup_cardbus(socket->dev->subordinate);
  642. }
  643. /*
  644. * Free the bridge mappings for the device..
  645. */
  646. static void yenta_free_resources(struct yenta_socket *socket)
  647. {
  648. int i;
  649. for (i = 0; i < 4; i++) {
  650. struct resource *res;
  651. res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
  652. if (res->start != 0 && res->end != 0)
  653. release_resource(res);
  654. res->start = res->end = res->flags = 0;
  655. }
  656. }
  657. /*
  658. * Close it down - release our resources and go home..
  659. */
  660. static void __devexit yenta_close(struct pci_dev *dev)
  661. {
  662. struct yenta_socket *sock = pci_get_drvdata(dev);
  663. /* Remove the register attributes */
  664. device_remove_file(&dev->dev, &dev_attr_yenta_registers);
  665. /* we don't want a dying socket registered */
  666. pcmcia_unregister_socket(&sock->socket);
  667. /* Disable all events so we don't die in an IRQ storm */
  668. cb_writel(sock, CB_SOCKET_MASK, 0x0);
  669. exca_writeb(sock, I365_CSCINT, 0);
  670. if (sock->cb_irq)
  671. free_irq(sock->cb_irq, sock);
  672. else
  673. del_timer_sync(&sock->poll_timer);
  674. if (sock->base)
  675. iounmap(sock->base);
  676. yenta_free_resources(sock);
  677. pci_release_regions(dev);
  678. pci_disable_device(dev);
  679. pci_set_drvdata(dev, NULL);
  680. }
  681. static struct pccard_operations yenta_socket_operations = {
  682. .init = yenta_sock_init,
  683. .suspend = yenta_sock_suspend,
  684. .get_status = yenta_get_status,
  685. .set_socket = yenta_set_socket,
  686. .set_io_map = yenta_set_io_map,
  687. .set_mem_map = yenta_set_mem_map,
  688. };
  689. #ifdef CONFIG_YENTA_TI
  690. #include "ti113x.h"
  691. #endif
  692. #ifdef CONFIG_YENTA_RICOH
  693. #include "ricoh.h"
  694. #endif
  695. #ifdef CONFIG_YENTA_TOSHIBA
  696. #include "topic.h"
  697. #endif
  698. #ifdef CONFIG_YENTA_O2
  699. #include "o2micro.h"
  700. #endif
  701. enum {
  702. CARDBUS_TYPE_DEFAULT = -1,
  703. CARDBUS_TYPE_TI,
  704. CARDBUS_TYPE_TI113X,
  705. CARDBUS_TYPE_TI12XX,
  706. CARDBUS_TYPE_TI1250,
  707. CARDBUS_TYPE_RICOH,
  708. CARDBUS_TYPE_TOPIC95,
  709. CARDBUS_TYPE_TOPIC97,
  710. CARDBUS_TYPE_O2MICRO,
  711. CARDBUS_TYPE_ENE,
  712. };
  713. /*
  714. * Different cardbus controllers have slightly different
  715. * initialization sequences etc details. List them here..
  716. */
  717. static struct cardbus_type cardbus_type[] = {
  718. #ifdef CONFIG_YENTA_TI
  719. [CARDBUS_TYPE_TI] = {
  720. .override = ti_override,
  721. .save_state = ti_save_state,
  722. .restore_state = ti_restore_state,
  723. .sock_init = ti_init,
  724. },
  725. [CARDBUS_TYPE_TI113X] = {
  726. .override = ti113x_override,
  727. .save_state = ti_save_state,
  728. .restore_state = ti_restore_state,
  729. .sock_init = ti_init,
  730. },
  731. [CARDBUS_TYPE_TI12XX] = {
  732. .override = ti12xx_override,
  733. .save_state = ti_save_state,
  734. .restore_state = ti_restore_state,
  735. .sock_init = ti_init,
  736. },
  737. [CARDBUS_TYPE_TI1250] = {
  738. .override = ti1250_override,
  739. .save_state = ti_save_state,
  740. .restore_state = ti_restore_state,
  741. .sock_init = ti_init,
  742. },
  743. #endif
  744. #ifdef CONFIG_YENTA_RICOH
  745. [CARDBUS_TYPE_RICOH] = {
  746. .override = ricoh_override,
  747. .save_state = ricoh_save_state,
  748. .restore_state = ricoh_restore_state,
  749. },
  750. #endif
  751. #ifdef CONFIG_YENTA_TOSHIBA
  752. [CARDBUS_TYPE_TOPIC95] = {
  753. .override = topic95_override,
  754. },
  755. [CARDBUS_TYPE_TOPIC97] = {
  756. .override = topic97_override,
  757. },
  758. #endif
  759. #ifdef CONFIG_YENTA_O2
  760. [CARDBUS_TYPE_O2MICRO] = {
  761. .override = o2micro_override,
  762. .restore_state = o2micro_restore_state,
  763. },
  764. #endif
  765. #ifdef CONFIG_YENTA_TI
  766. [CARDBUS_TYPE_ENE] = {
  767. .override = ene_override,
  768. .save_state = ti_save_state,
  769. .restore_state = ti_restore_state,
  770. .sock_init = ti_init,
  771. },
  772. #endif
  773. };
  774. /*
  775. * Only probe "regular" interrupts, don't
  776. * touch dangerous spots like the mouse irq,
  777. * because there are mice that apparently
  778. * get really confused if they get fondled
  779. * too intimately.
  780. *
  781. * Default to 11, 10, 9, 7, 6, 5, 4, 3.
  782. */
  783. static u32 isa_interrupts = 0x0ef8;
  784. static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
  785. {
  786. int i;
  787. unsigned long val;
  788. u32 mask;
  789. /*
  790. * Probe for usable interrupts using the force
  791. * register to generate bogus card status events.
  792. */
  793. cb_writel(socket, CB_SOCKET_EVENT, -1);
  794. cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
  795. exca_writeb(socket, I365_CSCINT, 0);
  796. val = probe_irq_on() & isa_irq_mask;
  797. for (i = 1; i < 16; i++) {
  798. if (!((val >> i) & 1))
  799. continue;
  800. exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
  801. cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
  802. udelay(100);
  803. cb_writel(socket, CB_SOCKET_EVENT, -1);
  804. }
  805. cb_writel(socket, CB_SOCKET_MASK, 0);
  806. exca_writeb(socket, I365_CSCINT, 0);
  807. mask = probe_irq_mask(val) & 0xffff;
  808. return mask;
  809. }
  810. /*
  811. * yenta PCI irq probing.
  812. * currently only used in the TI/EnE initialization code
  813. */
  814. #ifdef CONFIG_YENTA_TI
  815. /* interrupt handler, only used during probing */
  816. static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
  817. {
  818. struct yenta_socket *socket = (struct yenta_socket *) dev_id;
  819. u8 csc;
  820. u32 cb_event;
  821. /* Clear interrupt status for the event */
  822. cb_event = cb_readl(socket, CB_SOCKET_EVENT);
  823. cb_writel(socket, CB_SOCKET_EVENT, -1);
  824. csc = exca_readb(socket, I365_CSC);
  825. if (cb_event || csc) {
  826. socket->probe_status = 1;
  827. return IRQ_HANDLED;
  828. }
  829. return IRQ_NONE;
  830. }
  831. /* probes the PCI interrupt, use only on override functions */
  832. static int yenta_probe_cb_irq(struct yenta_socket *socket)
  833. {
  834. if (!socket->cb_irq)
  835. return -1;
  836. socket->probe_status = 0;
  837. if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
  838. dev_printk(KERN_WARNING, &socket->dev->dev,
  839. "request_irq() in yenta_probe_cb_irq() failed!\n");
  840. return -1;
  841. }
  842. /* generate interrupt, wait */
  843. exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG);
  844. cb_writel(socket, CB_SOCKET_EVENT, -1);
  845. cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
  846. cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
  847. msleep(100);
  848. /* disable interrupts */
  849. cb_writel(socket, CB_SOCKET_MASK, 0);
  850. exca_writeb(socket, I365_CSCINT, 0);
  851. cb_writel(socket, CB_SOCKET_EVENT, -1);
  852. exca_readb(socket, I365_CSC);
  853. free_irq(socket->cb_irq, socket);
  854. return (int) socket->probe_status;
  855. }
  856. #endif /* CONFIG_YENTA_TI */
  857. /*
  858. * Set static data that doesn't need re-initializing..
  859. */
  860. static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
  861. {
  862. socket->socket.pci_irq = socket->cb_irq;
  863. if (isa_probe)
  864. socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
  865. else
  866. socket->socket.irq_mask = 0;
  867. dev_printk(KERN_INFO, &socket->dev->dev,
  868. "ISA IRQ mask 0x%04x, PCI irq %d\n",
  869. socket->socket.irq_mask, socket->cb_irq);
  870. }
  871. /*
  872. * Initialize the standard cardbus registers
  873. */
  874. static void yenta_config_init(struct yenta_socket *socket)
  875. {
  876. u16 bridge;
  877. struct pci_dev *dev = socket->dev;
  878. struct pci_bus_region region;
  879. pcibios_resource_to_bus(socket->dev, &region, &dev->resource[0]);
  880. config_writel(socket, CB_LEGACY_MODE_BASE, 0);
  881. config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
  882. config_writew(socket, PCI_COMMAND,
  883. PCI_COMMAND_IO |
  884. PCI_COMMAND_MEMORY |
  885. PCI_COMMAND_MASTER |
  886. PCI_COMMAND_WAIT);
  887. /* MAGIC NUMBERS! Fixme */
  888. config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
  889. config_writeb(socket, PCI_LATENCY_TIMER, 168);
  890. config_writel(socket, PCI_PRIMARY_BUS,
  891. (176 << 24) | /* sec. latency timer */
  892. (dev->subordinate->subordinate << 16) | /* subordinate bus */
  893. (dev->subordinate->secondary << 8) | /* secondary bus */
  894. dev->subordinate->primary); /* primary bus */
  895. /*
  896. * Set up the bridging state:
  897. * - enable write posting.
  898. * - memory window 0 prefetchable, window 1 non-prefetchable
  899. * - PCI interrupts enabled if a PCI interrupt exists..
  900. */
  901. bridge = config_readw(socket, CB_BRIDGE_CONTROL);
  902. bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
  903. bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
  904. config_writew(socket, CB_BRIDGE_CONTROL, bridge);
  905. }
  906. /**
  907. * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
  908. * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
  909. *
  910. * Checks if devices on the bus which the CardBus bridge bridges to would be
  911. * invisible during PCI scans because of a misconfigured subordinate number
  912. * of the parent brige - some BIOSes seem to be too lazy to set it right.
  913. * Does the fixup carefully by checking how far it can go without conflicts.
  914. * See http\://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
  915. */
  916. static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
  917. {
  918. struct list_head *tmp;
  919. unsigned char upper_limit;
  920. /*
  921. * We only check and fix the parent bridge: All systems which need
  922. * this fixup that have been reviewed are laptops and the only bridge
  923. * which needed fixing was the parent bridge of the CardBus bridge:
  924. */
  925. struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
  926. /* Check bus numbers are already set up correctly: */
  927. if (bridge_to_fix->subordinate >= cardbus_bridge->subordinate)
  928. return; /* The subordinate number is ok, nothing to do */
  929. if (!bridge_to_fix->parent)
  930. return; /* Root bridges are ok */
  931. /* stay within the limits of the bus range of the parent: */
  932. upper_limit = bridge_to_fix->parent->subordinate;
  933. /* check the bus ranges of all silbling bridges to prevent overlap */
  934. list_for_each(tmp, &bridge_to_fix->parent->children) {
  935. struct pci_bus *silbling = pci_bus_b(tmp);
  936. /*
  937. * If the silbling has a higher secondary bus number
  938. * and it's secondary is equal or smaller than our
  939. * current upper limit, set the new upper limit to
  940. * the bus number below the silbling's range:
  941. */
  942. if (silbling->secondary > bridge_to_fix->subordinate
  943. && silbling->secondary <= upper_limit)
  944. upper_limit = silbling->secondary - 1;
  945. }
  946. /* Show that the wanted subordinate number is not possible: */
  947. if (cardbus_bridge->subordinate > upper_limit)
  948. dev_printk(KERN_WARNING, &cardbus_bridge->dev,
  949. "Upper limit for fixing this "
  950. "bridge's parent bridge: #%02x\n", upper_limit);
  951. /* If we have room to increase the bridge's subordinate number, */
  952. if (bridge_to_fix->subordinate < upper_limit) {
  953. /* use the highest number of the hidden bus, within limits */
  954. unsigned char subordinate_to_assign =
  955. min(cardbus_bridge->subordinate, upper_limit);
  956. dev_printk(KERN_INFO, &bridge_to_fix->dev,
  957. "Raising subordinate bus# of parent "
  958. "bus (#%02x) from #%02x to #%02x\n",
  959. bridge_to_fix->number,
  960. bridge_to_fix->subordinate, subordinate_to_assign);
  961. /* Save the new subordinate in the bus struct of the bridge */
  962. bridge_to_fix->subordinate = subordinate_to_assign;
  963. /* and update the PCI config space with the new subordinate */
  964. pci_write_config_byte(bridge_to_fix->self,
  965. PCI_SUBORDINATE_BUS, bridge_to_fix->subordinate);
  966. }
  967. }
  968. /*
  969. * Initialize a cardbus controller. Make sure we have a usable
  970. * interrupt, and that we can map the cardbus area. Fill in the
  971. * socket information structure..
  972. */
  973. static int __devinit yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
  974. {
  975. struct yenta_socket *socket;
  976. int ret;
  977. /*
  978. * If we failed to assign proper bus numbers for this cardbus
  979. * controller during PCI probe, its subordinate pci_bus is NULL.
  980. * Bail out if so.
  981. */
  982. if (!dev->subordinate) {
  983. dev_printk(KERN_ERR, &dev->dev, "no bus associated! "
  984. "(try 'pci=assign-busses')\n");
  985. return -ENODEV;
  986. }
  987. socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
  988. if (!socket)
  989. return -ENOMEM;
  990. /* prepare pcmcia_socket */
  991. socket->socket.ops = &yenta_socket_operations;
  992. socket->socket.resource_ops = &pccard_nonstatic_ops;
  993. socket->socket.dev.parent = &dev->dev;
  994. socket->socket.driver_data = socket;
  995. socket->socket.owner = THIS_MODULE;
  996. socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
  997. socket->socket.map_size = 0x1000;
  998. socket->socket.cb_dev = dev;
  999. /* prepare struct yenta_socket */
  1000. socket->dev = dev;
  1001. pci_set_drvdata(dev, socket);
  1002. /*
  1003. * Do some basic sanity checking..
  1004. */
  1005. if (pci_enable_device(dev)) {
  1006. ret = -EBUSY;
  1007. goto free;
  1008. }
  1009. ret = pci_request_regions(dev, "yenta_socket");
  1010. if (ret)
  1011. goto disable;
  1012. if (!pci_resource_start(dev, 0)) {
  1013. dev_printk(KERN_ERR, &dev->dev, "No cardbus resource!\n");
  1014. ret = -ENODEV;
  1015. goto release;
  1016. }
  1017. /*
  1018. * Ok, start setup.. Map the cardbus registers,
  1019. * and request the IRQ.
  1020. */
  1021. socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
  1022. if (!socket->base) {
  1023. ret = -ENOMEM;
  1024. goto release;
  1025. }
  1026. /*
  1027. * report the subsystem vendor and device for help debugging
  1028. * the irq stuff...
  1029. */
  1030. dev_printk(KERN_INFO, &dev->dev, "CardBus bridge found [%04x:%04x]\n",
  1031. dev->subsystem_vendor, dev->subsystem_device);
  1032. yenta_config_init(socket);
  1033. /* Disable all events */
  1034. cb_writel(socket, CB_SOCKET_MASK, 0x0);
  1035. /* Set up the bridge regions.. */
  1036. yenta_allocate_resources(socket);
  1037. socket->cb_irq = dev->irq;
  1038. /* Do we have special options for the device? */
  1039. if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
  1040. id->driver_data < ARRAY_SIZE(cardbus_type)) {
  1041. socket->type = &cardbus_type[id->driver_data];
  1042. ret = socket->type->override(socket);
  1043. if (ret < 0)
  1044. goto unmap;
  1045. }
  1046. /* We must finish initialization here */
  1047. if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
  1048. /* No IRQ or request_irq failed. Poll */
  1049. socket->cb_irq = 0; /* But zero is a valid IRQ number. */
  1050. init_timer(&socket->poll_timer);
  1051. socket->poll_timer.function = yenta_interrupt_wrapper;
  1052. socket->poll_timer.data = (unsigned long)socket;
  1053. socket->poll_timer.expires = jiffies + HZ;
  1054. add_timer(&socket->poll_timer);
  1055. dev_printk(KERN_INFO, &dev->dev,
  1056. "no PCI IRQ, CardBus support disabled for this "
  1057. "socket.\n");
  1058. dev_printk(KERN_INFO, &dev->dev,
  1059. "check your BIOS CardBus, BIOS IRQ or ACPI "
  1060. "settings.\n");
  1061. } else {
  1062. socket->socket.features |= SS_CAP_CARDBUS;
  1063. }
  1064. /* Figure out what the dang thing can do for the PCMCIA layer... */
  1065. yenta_interrogate(socket);
  1066. yenta_get_socket_capabilities(socket, isa_interrupts);
  1067. dev_printk(KERN_INFO, &dev->dev,
  1068. "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
  1069. yenta_fixup_parent_bridge(dev->subordinate);
  1070. /* Register it with the pcmcia layer.. */
  1071. ret = pcmcia_register_socket(&socket->socket);
  1072. if (ret == 0) {
  1073. /* Add the yenta register attributes */
  1074. ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
  1075. if (ret == 0)
  1076. goto out;
  1077. /* error path... */
  1078. pcmcia_unregister_socket(&socket->socket);
  1079. }
  1080. unmap:
  1081. iounmap(socket->base);
  1082. release:
  1083. pci_release_regions(dev);
  1084. disable:
  1085. pci_disable_device(dev);
  1086. free:
  1087. kfree(socket);
  1088. out:
  1089. return ret;
  1090. }
  1091. #ifdef CONFIG_PM
  1092. static int yenta_dev_suspend_noirq(struct device *dev)
  1093. {
  1094. struct pci_dev *pdev = to_pci_dev(dev);
  1095. struct yenta_socket *socket = pci_get_drvdata(pdev);
  1096. int ret;
  1097. ret = pcmcia_socket_dev_suspend(dev);
  1098. if (!socket)
  1099. return ret;
  1100. if (socket->type && socket->type->save_state)
  1101. socket->type->save_state(socket);
  1102. pci_save_state(pdev);
  1103. pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
  1104. pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
  1105. pci_disable_device(pdev);
  1106. /*
  1107. * Some laptops (IBM T22) do not like us putting the Cardbus
  1108. * bridge into D3. At a guess, some other laptop will
  1109. * probably require this, so leave it commented out for now.
  1110. */
  1111. /* pci_set_power_state(dev, 3); */
  1112. return ret;
  1113. }
  1114. static int yenta_dev_resume_noirq(struct device *dev)
  1115. {
  1116. struct pci_dev *pdev = to_pci_dev(dev);
  1117. struct yenta_socket *socket = pci_get_drvdata(pdev);
  1118. int ret;
  1119. if (!socket)
  1120. return 0;
  1121. pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
  1122. pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
  1123. ret = pci_enable_device(pdev);
  1124. if (ret)
  1125. return ret;
  1126. pci_set_master(pdev);
  1127. if (socket->type && socket->type->restore_state)
  1128. socket->type->restore_state(socket);
  1129. pcmcia_socket_dev_early_resume(dev);
  1130. return 0;
  1131. }
  1132. static int yenta_dev_resume(struct device *dev)
  1133. {
  1134. pcmcia_socket_dev_late_resume(dev);
  1135. return 0;
  1136. }
  1137. static const struct dev_pm_ops yenta_pm_ops = {
  1138. .suspend_noirq = yenta_dev_suspend_noirq,
  1139. .resume_noirq = yenta_dev_resume_noirq,
  1140. .resume = yenta_dev_resume,
  1141. .freeze_noirq = yenta_dev_suspend_noirq,
  1142. .thaw_noirq = yenta_dev_resume_noirq,
  1143. .thaw = yenta_dev_resume,
  1144. .poweroff_noirq = yenta_dev_suspend_noirq,
  1145. .restore_noirq = yenta_dev_resume_noirq,
  1146. .restore = yenta_dev_resume,
  1147. };
  1148. #define YENTA_PM_OPS (&yenta_pm_ops)
  1149. #else
  1150. #define YENTA_PM_OPS NULL
  1151. #endif
  1152. #define CB_ID(vend, dev, type) \
  1153. { \
  1154. .vendor = vend, \
  1155. .device = dev, \
  1156. .subvendor = PCI_ANY_ID, \
  1157. .subdevice = PCI_ANY_ID, \
  1158. .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
  1159. .class_mask = ~0, \
  1160. .driver_data = CARDBUS_TYPE_##type, \
  1161. }
  1162. static struct pci_device_id yenta_table[] = {
  1163. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
  1164. /*
  1165. * TBD: Check if these TI variants can use more
  1166. * advanced overrides instead. (I can't get the
  1167. * data sheets for these devices. --rmk)
  1168. */
  1169. #ifdef CONFIG_YENTA_TI
  1170. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
  1171. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
  1172. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
  1173. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
  1174. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
  1175. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
  1176. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
  1177. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
  1178. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
  1179. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
  1180. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
  1181. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
  1182. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
  1183. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
  1184. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
  1185. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
  1186. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
  1187. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
  1188. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
  1189. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
  1190. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
  1191. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
  1192. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
  1193. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
  1194. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
  1195. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
  1196. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
  1197. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
  1198. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
  1199. CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
  1200. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, ENE),
  1201. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, ENE),
  1202. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, ENE),
  1203. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, ENE),
  1204. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
  1205. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
  1206. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
  1207. CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
  1208. #endif /* CONFIG_YENTA_TI */
  1209. #ifdef CONFIG_YENTA_RICOH
  1210. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
  1211. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
  1212. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
  1213. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
  1214. CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
  1215. #endif
  1216. #ifdef CONFIG_YENTA_TOSHIBA
  1217. CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
  1218. CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
  1219. CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
  1220. #endif
  1221. #ifdef CONFIG_YENTA_O2
  1222. CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
  1223. #endif
  1224. /* match any cardbus bridge */
  1225. CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
  1226. { /* all zeroes */ }
  1227. };
  1228. MODULE_DEVICE_TABLE(pci, yenta_table);
  1229. static struct pci_driver yenta_cardbus_driver = {
  1230. .name = "yenta_cardbus",
  1231. .id_table = yenta_table,
  1232. .probe = yenta_probe,
  1233. .remove = __devexit_p(yenta_close),
  1234. .driver.pm = YENTA_PM_OPS,
  1235. };
  1236. static int __init yenta_socket_init(void)
  1237. {
  1238. return pci_register_driver(&yenta_cardbus_driver);
  1239. }
  1240. static void __exit yenta_socket_exit(void)
  1241. {
  1242. pci_unregister_driver(&yenta_cardbus_driver);
  1243. }
  1244. module_init(yenta_socket_init);
  1245. module_exit(yenta_socket_exit);
  1246. MODULE_LICENSE("GPL");