Root/drivers/pcmcia/yenta_socket.c

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 <linux/slab.h>
21
22#include <pcmcia/cs_types.h>
23#include <pcmcia/ss.h>
24#include <pcmcia/cs.h>
25
26#include "yenta_socket.h"
27#include "i82365.h"
28
29static int disable_clkrun;
30module_param(disable_clkrun, bool, 0444);
31MODULE_PARM_DESC(disable_clkrun, "If PC card doesn't function properly, please try this option");
32
33static int isa_probe = 1;
34module_param(isa_probe, bool, 0444);
35MODULE_PARM_DESC(isa_probe, "If set ISA interrupts are probed (default). Set to N to disable probing");
36
37static int pwr_irqs_off;
38module_param(pwr_irqs_off, bool, 0644);
39MODULE_PARM_DESC(pwr_irqs_off, "Force IRQs off during power-on of slot. Use only when seeing IRQ storms!");
40
41static char o2_speedup[] = "default";
42module_param_string(o2_speedup, o2_speedup, sizeof(o2_speedup), 0444);
43MODULE_PARM_DESC(o2_speedup, "Use prefetch/burst for O2-bridges: 'on', 'off' "
44    "or 'default' (uses recommended behaviour for the detected bridge)");
45
46/*
47 * Only probe "regular" interrupts, don't
48 * touch dangerous spots like the mouse irq,
49 * because there are mice that apparently
50 * get really confused if they get fondled
51 * too intimately.
52 *
53 * Default to 11, 10, 9, 7, 6, 5, 4, 3.
54 */
55static u32 isa_interrupts = 0x0ef8;
56
57
58#define debug(x, s, args...) dev_dbg(&s->dev->dev, x, ##args)
59
60/* Don't ask.. */
61#define to_cycles(ns) ((ns)/120)
62#define to_ns(cycles) ((cycles)*120)
63
64/*
65 * yenta PCI irq probing.
66 * currently only used in the TI/EnE initialization code
67 */
68#ifdef CONFIG_YENTA_TI
69static int yenta_probe_cb_irq(struct yenta_socket *socket);
70static unsigned int yenta_probe_irq(struct yenta_socket *socket,
71                u32 isa_irq_mask);
72#endif
73
74
75static unsigned int override_bios;
76module_param(override_bios, uint, 0000);
77MODULE_PARM_DESC(override_bios, "yenta ignore bios resource allocation");
78
79/*
80 * Generate easy-to-use ways of reading a cardbus sockets
81 * regular memory space ("cb_xxx"), configuration space
82 * ("config_xxx") and compatibility space ("exca_xxxx")
83 */
84static inline u32 cb_readl(struct yenta_socket *socket, unsigned reg)
85{
86    u32 val = readl(socket->base + reg);
87    debug("%04x %08x\n", socket, reg, val);
88    return val;
89}
90
91static inline void cb_writel(struct yenta_socket *socket, unsigned reg, u32 val)
92{
93    debug("%04x %08x\n", socket, reg, val);
94    writel(val, socket->base + reg);
95    readl(socket->base + reg); /* avoid problems with PCI write posting */
96}
97
98static inline u8 config_readb(struct yenta_socket *socket, unsigned offset)
99{
100    u8 val;
101    pci_read_config_byte(socket->dev, offset, &val);
102    debug("%04x %02x\n", socket, offset, val);
103    return val;
104}
105
106static inline u16 config_readw(struct yenta_socket *socket, unsigned offset)
107{
108    u16 val;
109    pci_read_config_word(socket->dev, offset, &val);
110    debug("%04x %04x\n", socket, offset, val);
111    return val;
112}
113
114static inline u32 config_readl(struct yenta_socket *socket, unsigned offset)
115{
116    u32 val;
117    pci_read_config_dword(socket->dev, offset, &val);
118    debug("%04x %08x\n", socket, offset, val);
119    return val;
120}
121
122static inline void config_writeb(struct yenta_socket *socket, unsigned offset, u8 val)
123{
124    debug("%04x %02x\n", socket, offset, val);
125    pci_write_config_byte(socket->dev, offset, val);
126}
127
128static inline void config_writew(struct yenta_socket *socket, unsigned offset, u16 val)
129{
130    debug("%04x %04x\n", socket, offset, val);
131    pci_write_config_word(socket->dev, offset, val);
132}
133
134static inline void config_writel(struct yenta_socket *socket, unsigned offset, u32 val)
135{
136    debug("%04x %08x\n", socket, offset, val);
137    pci_write_config_dword(socket->dev, offset, val);
138}
139
140static inline u8 exca_readb(struct yenta_socket *socket, unsigned reg)
141{
142    u8 val = readb(socket->base + 0x800 + reg);
143    debug("%04x %02x\n", socket, reg, val);
144    return val;
145}
146
147static inline u8 exca_readw(struct yenta_socket *socket, unsigned reg)
148{
149    u16 val;
150    val = readb(socket->base + 0x800 + reg);
151    val |= readb(socket->base + 0x800 + reg + 1) << 8;
152    debug("%04x %04x\n", socket, reg, val);
153    return val;
154}
155
156static inline void exca_writeb(struct yenta_socket *socket, unsigned reg, u8 val)
157{
158    debug("%04x %02x\n", socket, reg, val);
159    writeb(val, socket->base + 0x800 + reg);
160    readb(socket->base + 0x800 + reg); /* PCI write posting... */
161}
162
163static void exca_writew(struct yenta_socket *socket, unsigned reg, u16 val)
164{
165    debug("%04x %04x\n", socket, reg, val);
166    writeb(val, socket->base + 0x800 + reg);
167    writeb(val >> 8, socket->base + 0x800 + reg + 1);
168
169    /* PCI write posting... */
170    readb(socket->base + 0x800 + reg);
171    readb(socket->base + 0x800 + reg + 1);
172}
173
174static ssize_t show_yenta_registers(struct device *yentadev, struct device_attribute *attr, char *buf)
175{
176    struct pci_dev *dev = to_pci_dev(yentadev);
177    struct yenta_socket *socket = pci_get_drvdata(dev);
178    int offset = 0, i;
179
180    offset = snprintf(buf, PAGE_SIZE, "CB registers:");
181    for (i = 0; i < 0x24; i += 4) {
182        unsigned val;
183        if (!(i & 15))
184            offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
185        val = cb_readl(socket, i);
186        offset += snprintf(buf + offset, PAGE_SIZE - offset, " %08x", val);
187    }
188
189    offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n\nExCA registers:");
190    for (i = 0; i < 0x45; i++) {
191        unsigned char val;
192        if (!(i & 7)) {
193            if (i & 8) {
194                memcpy(buf + offset, " -", 2);
195                offset += 2;
196            } else
197                offset += snprintf(buf + offset, PAGE_SIZE - offset, "\n%02x:", i);
198        }
199        val = exca_readb(socket, i);
200        offset += snprintf(buf + offset, PAGE_SIZE - offset, " %02x", val);
201    }
202    buf[offset++] = '\n';
203    return offset;
204}
205
206static DEVICE_ATTR(yenta_registers, S_IRUSR, show_yenta_registers, NULL);
207
208/*
209 * Ugh, mixed-mode cardbus and 16-bit pccard state: things depend
210 * on what kind of card is inserted..
211 */
212static int yenta_get_status(struct pcmcia_socket *sock, unsigned int *value)
213{
214    struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
215    unsigned int val;
216    u32 state = cb_readl(socket, CB_SOCKET_STATE);
217
218    val = (state & CB_3VCARD) ? SS_3VCARD : 0;
219    val |= (state & CB_XVCARD) ? SS_XVCARD : 0;
220    val |= (state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ? 0 : SS_PENDING;
221    val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? SS_PENDING : 0;
222
223
224    if (state & CB_CBCARD) {
225        val |= SS_CARDBUS;
226        val |= (state & CB_CARDSTS) ? SS_STSCHG : 0;
227        val |= (state & (CB_CDETECT1 | CB_CDETECT2)) ? 0 : SS_DETECT;
228        val |= (state & CB_PWRCYCLE) ? SS_POWERON | SS_READY : 0;
229    } else if (state & CB_16BITCARD) {
230        u8 status = exca_readb(socket, I365_STATUS);
231        val |= ((status & I365_CS_DETECT) == I365_CS_DETECT) ? SS_DETECT : 0;
232        if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
233            val |= (status & I365_CS_STSCHG) ? 0 : SS_STSCHG;
234        } else {
235            val |= (status & I365_CS_BVD1) ? 0 : SS_BATDEAD;
236            val |= (status & I365_CS_BVD2) ? 0 : SS_BATWARN;
237        }
238        val |= (status & I365_CS_WRPROT) ? SS_WRPROT : 0;
239        val |= (status & I365_CS_READY) ? SS_READY : 0;
240        val |= (status & I365_CS_POWERON) ? SS_POWERON : 0;
241    }
242
243    *value = val;
244    return 0;
245}
246
247static void yenta_set_power(struct yenta_socket *socket, socket_state_t *state)
248{
249    /* some birdges require to use the ExCA registers to power 16bit cards */
250    if (!(cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) &&
251        (socket->flags & YENTA_16BIT_POWER_EXCA)) {
252        u8 reg, old;
253        reg = old = exca_readb(socket, I365_POWER);
254        reg &= ~(I365_VCC_MASK | I365_VPP1_MASK | I365_VPP2_MASK);
255
256        /* i82365SL-DF style */
257        if (socket->flags & YENTA_16BIT_POWER_DF) {
258            switch (state->Vcc) {
259            case 33:
260                reg |= I365_VCC_3V;
261                break;
262            case 50:
263                reg |= I365_VCC_5V;
264                break;
265            default:
266                reg = 0;
267                break;
268            }
269            switch (state->Vpp) {
270            case 33:
271            case 50:
272                reg |= I365_VPP1_5V;
273                break;
274            case 120:
275                reg |= I365_VPP1_12V;
276                break;
277            }
278        } else {
279            /* i82365SL-B style */
280            switch (state->Vcc) {
281            case 50:
282                reg |= I365_VCC_5V;
283                break;
284            default:
285                reg = 0;
286                break;
287            }
288            switch (state->Vpp) {
289            case 50:
290                reg |= I365_VPP1_5V | I365_VPP2_5V;
291                break;
292            case 120:
293                reg |= I365_VPP1_12V | I365_VPP2_12V;
294                break;
295            }
296        }
297
298        if (reg != old)
299            exca_writeb(socket, I365_POWER, reg);
300    } else {
301        u32 reg = 0; /* CB_SC_STPCLK? */
302        switch (state->Vcc) {
303        case 33:
304            reg = CB_SC_VCC_3V;
305            break;
306        case 50:
307            reg = CB_SC_VCC_5V;
308            break;
309        default:
310            reg = 0;
311            break;
312        }
313        switch (state->Vpp) {
314        case 33:
315            reg |= CB_SC_VPP_3V;
316            break;
317        case 50:
318            reg |= CB_SC_VPP_5V;
319            break;
320        case 120:
321            reg |= CB_SC_VPP_12V;
322            break;
323        }
324        if (reg != cb_readl(socket, CB_SOCKET_CONTROL))
325            cb_writel(socket, CB_SOCKET_CONTROL, reg);
326    }
327}
328
329static int yenta_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
330{
331    struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
332    u16 bridge;
333
334    /* if powering down: do it immediately */
335    if (state->Vcc == 0)
336        yenta_set_power(socket, state);
337
338    socket->io_irq = state->io_irq;
339    bridge = config_readw(socket, CB_BRIDGE_CONTROL) & ~(CB_BRIDGE_CRST | CB_BRIDGE_INTR);
340    if (cb_readl(socket, CB_SOCKET_STATE) & CB_CBCARD) {
341        u8 intr;
342        bridge |= (state->flags & SS_RESET) ? CB_BRIDGE_CRST : 0;
343
344        /* ISA interrupt control? */
345        intr = exca_readb(socket, I365_INTCTL);
346        intr = (intr & ~0xf);
347        if (!socket->dev->irq) {
348            intr |= socket->cb_irq ? socket->cb_irq : state->io_irq;
349            bridge |= CB_BRIDGE_INTR;
350        }
351        exca_writeb(socket, I365_INTCTL, intr);
352    } else {
353        u8 reg;
354
355        reg = exca_readb(socket, I365_INTCTL) & (I365_RING_ENA | I365_INTR_ENA);
356        reg |= (state->flags & SS_RESET) ? 0 : I365_PC_RESET;
357        reg |= (state->flags & SS_IOCARD) ? I365_PC_IOCARD : 0;
358        if (state->io_irq != socket->dev->irq) {
359            reg |= state->io_irq;
360            bridge |= CB_BRIDGE_INTR;
361        }
362        exca_writeb(socket, I365_INTCTL, reg);
363
364        reg = exca_readb(socket, I365_POWER) & (I365_VCC_MASK|I365_VPP1_MASK);
365        reg |= I365_PWR_NORESET;
366        if (state->flags & SS_PWR_AUTO)
367            reg |= I365_PWR_AUTO;
368        if (state->flags & SS_OUTPUT_ENA)
369            reg |= I365_PWR_OUT;
370        if (exca_readb(socket, I365_POWER) != reg)
371            exca_writeb(socket, I365_POWER, reg);
372
373        /* CSC interrupt: no ISA irq for CSC */
374        reg = exca_readb(socket, I365_CSCINT);
375        reg &= I365_CSC_IRQ_MASK;
376        reg |= I365_CSC_DETECT;
377        if (state->flags & SS_IOCARD) {
378            if (state->csc_mask & SS_STSCHG)
379                reg |= I365_CSC_STSCHG;
380        } else {
381            if (state->csc_mask & SS_BATDEAD)
382                reg |= I365_CSC_BVD1;
383            if (state->csc_mask & SS_BATWARN)
384                reg |= I365_CSC_BVD2;
385            if (state->csc_mask & SS_READY)
386                reg |= I365_CSC_READY;
387        }
388        exca_writeb(socket, I365_CSCINT, reg);
389        exca_readb(socket, I365_CSC);
390        if (sock->zoom_video)
391            sock->zoom_video(sock, state->flags & SS_ZVCARD);
392    }
393    config_writew(socket, CB_BRIDGE_CONTROL, bridge);
394    /* Socket event mask: get card insert/remove events.. */
395    cb_writel(socket, CB_SOCKET_EVENT, -1);
396    cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
397
398    /* if powering up: do it as the last step when the socket is configured */
399    if (state->Vcc != 0)
400        yenta_set_power(socket, state);
401    return 0;
402}
403
404static int yenta_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *io)
405{
406    struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
407    int map;
408    unsigned char ioctl, addr, enable;
409
410    map = io->map;
411
412    if (map > 1)
413        return -EINVAL;
414
415    enable = I365_ENA_IO(map);
416    addr = exca_readb(socket, I365_ADDRWIN);
417
418    /* Disable the window before changing it.. */
419    if (addr & enable) {
420        addr &= ~enable;
421        exca_writeb(socket, I365_ADDRWIN, addr);
422    }
423
424    exca_writew(socket, I365_IO(map)+I365_W_START, io->start);
425    exca_writew(socket, I365_IO(map)+I365_W_STOP, io->stop);
426
427    ioctl = exca_readb(socket, I365_IOCTL) & ~I365_IOCTL_MASK(map);
428    if (io->flags & MAP_0WS)
429        ioctl |= I365_IOCTL_0WS(map);
430    if (io->flags & MAP_16BIT)
431        ioctl |= I365_IOCTL_16BIT(map);
432    if (io->flags & MAP_AUTOSZ)
433        ioctl |= I365_IOCTL_IOCS16(map);
434    exca_writeb(socket, I365_IOCTL, ioctl);
435
436    if (io->flags & MAP_ACTIVE)
437        exca_writeb(socket, I365_ADDRWIN, addr | enable);
438    return 0;
439}
440
441static int yenta_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *mem)
442{
443    struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
444    struct pci_bus_region region;
445    int map;
446    unsigned char addr, enable;
447    unsigned int start, stop, card_start;
448    unsigned short word;
449
450    pcibios_resource_to_bus(socket->dev, &region, mem->res);
451
452    map = mem->map;
453    start = region.start;
454    stop = region.end;
455    card_start = mem->card_start;
456
457    if (map > 4 || start > stop || ((start ^ stop) >> 24) ||
458        (card_start >> 26) || mem->speed > 1000)
459        return -EINVAL;
460
461    enable = I365_ENA_MEM(map);
462    addr = exca_readb(socket, I365_ADDRWIN);
463    if (addr & enable) {
464        addr &= ~enable;
465        exca_writeb(socket, I365_ADDRWIN, addr);
466    }
467
468    exca_writeb(socket, CB_MEM_PAGE(map), start >> 24);
469
470    word = (start >> 12) & 0x0fff;
471    if (mem->flags & MAP_16BIT)
472        word |= I365_MEM_16BIT;
473    if (mem->flags & MAP_0WS)
474        word |= I365_MEM_0WS;
475    exca_writew(socket, I365_MEM(map) + I365_W_START, word);
476
477    word = (stop >> 12) & 0x0fff;
478    switch (to_cycles(mem->speed)) {
479    case 0:
480        break;
481    case 1:
482        word |= I365_MEM_WS0;
483        break;
484    case 2:
485        word |= I365_MEM_WS1;
486        break;
487    default:
488        word |= I365_MEM_WS1 | I365_MEM_WS0;
489        break;
490    }
491    exca_writew(socket, I365_MEM(map) + I365_W_STOP, word);
492
493    word = ((card_start - start) >> 12) & 0x3fff;
494    if (mem->flags & MAP_WRPROT)
495        word |= I365_MEM_WRPROT;
496    if (mem->flags & MAP_ATTRIB)
497        word |= I365_MEM_REG;
498    exca_writew(socket, I365_MEM(map) + I365_W_OFF, word);
499
500    if (mem->flags & MAP_ACTIVE)
501        exca_writeb(socket, I365_ADDRWIN, addr | enable);
502    return 0;
503}
504
505
506
507static irqreturn_t yenta_interrupt(int irq, void *dev_id)
508{
509    unsigned int events;
510    struct yenta_socket *socket = (struct yenta_socket *) dev_id;
511    u8 csc;
512    u32 cb_event;
513
514    /* Clear interrupt status for the event */
515    cb_event = cb_readl(socket, CB_SOCKET_EVENT);
516    cb_writel(socket, CB_SOCKET_EVENT, cb_event);
517
518    csc = exca_readb(socket, I365_CSC);
519
520    if (!(cb_event || csc))
521        return IRQ_NONE;
522
523    events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
524    events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
525    if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) {
526        events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0;
527    } else {
528        events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
529        events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
530        events |= (csc & I365_CSC_READY) ? SS_READY : 0;
531    }
532
533    if (events)
534        pcmcia_parse_events(&socket->socket, events);
535
536    return IRQ_HANDLED;
537}
538
539static void yenta_interrupt_wrapper(unsigned long data)
540{
541    struct yenta_socket *socket = (struct yenta_socket *) data;
542
543    yenta_interrupt(0, (void *)socket);
544    socket->poll_timer.expires = jiffies + HZ;
545    add_timer(&socket->poll_timer);
546}
547
548static void yenta_clear_maps(struct yenta_socket *socket)
549{
550    int i;
551    struct resource res = { .start = 0, .end = 0x0fff };
552    pccard_io_map io = { 0, 0, 0, 0, 1 };
553    pccard_mem_map mem = { .res = &res, };
554
555    yenta_set_socket(&socket->socket, &dead_socket);
556    for (i = 0; i < 2; i++) {
557        io.map = i;
558        yenta_set_io_map(&socket->socket, &io);
559    }
560    for (i = 0; i < 5; i++) {
561        mem.map = i;
562        yenta_set_mem_map(&socket->socket, &mem);
563    }
564}
565
566/* redoes voltage interrogation if required */
567static void yenta_interrogate(struct yenta_socket *socket)
568{
569    u32 state;
570
571    state = cb_readl(socket, CB_SOCKET_STATE);
572    if (!(state & (CB_5VCARD | CB_3VCARD | CB_XVCARD | CB_YVCARD)) ||
573        (state & (CB_CDETECT1 | CB_CDETECT2 | CB_NOTACARD | CB_BADVCCREQ)) ||
574        ((state & (CB_16BITCARD | CB_CBCARD)) == (CB_16BITCARD | CB_CBCARD)))
575        cb_writel(socket, CB_SOCKET_FORCE, CB_CVSTEST);
576}
577
578/* Called at resume and initialization events */
579static int yenta_sock_init(struct pcmcia_socket *sock)
580{
581    struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
582
583    exca_writeb(socket, I365_GBLCTL, 0x00);
584    exca_writeb(socket, I365_GENCTL, 0x00);
585
586    /* Redo card voltage interrogation */
587    yenta_interrogate(socket);
588
589    yenta_clear_maps(socket);
590
591    if (socket->type && socket->type->sock_init)
592        socket->type->sock_init(socket);
593
594    /* Re-enable CSC interrupts */
595    cb_writel(socket, CB_SOCKET_MASK, CB_CDMASK);
596
597    return 0;
598}
599
600static int yenta_sock_suspend(struct pcmcia_socket *sock)
601{
602    struct yenta_socket *socket = container_of(sock, struct yenta_socket, socket);
603
604    /* Disable CSC interrupts */
605    cb_writel(socket, CB_SOCKET_MASK, 0x0);
606
607    return 0;
608}
609
610/*
611 * Use an adaptive allocation for the memory resource,
612 * sometimes the memory behind pci bridges is limited:
613 * 1/8 of the size of the io window of the parent.
614 * max 4 MB, min 16 kB. We try very hard to not get below
615 * the "ACC" values, though.
616 */
617#define BRIDGE_MEM_MAX (4*1024*1024)
618#define BRIDGE_MEM_ACC (128*1024)
619#define BRIDGE_MEM_MIN (16*1024)
620
621#define BRIDGE_IO_MAX 512
622#define BRIDGE_IO_ACC 256
623#define BRIDGE_IO_MIN 32
624
625#ifndef PCIBIOS_MIN_CARDBUS_IO
626#define PCIBIOS_MIN_CARDBUS_IO PCIBIOS_MIN_IO
627#endif
628
629static int yenta_search_one_res(struct resource *root, struct resource *res,
630                u32 min)
631{
632    u32 align, size, start, end;
633
634    if (res->flags & IORESOURCE_IO) {
635        align = 1024;
636        size = BRIDGE_IO_MAX;
637        start = PCIBIOS_MIN_CARDBUS_IO;
638        end = ~0U;
639    } else {
640        unsigned long avail = root->end - root->start;
641        int i;
642        size = BRIDGE_MEM_MAX;
643        if (size > avail/8) {
644            size = (avail+1)/8;
645            /* round size down to next power of 2 */
646            i = 0;
647            while ((size /= 2) != 0)
648                i++;
649            size = 1 << i;
650        }
651        if (size < min)
652            size = min;
653        align = size;
654        start = PCIBIOS_MIN_MEM;
655        end = ~0U;
656    }
657
658    do {
659        if (allocate_resource(root, res, size, start, end, align,
660                      NULL, NULL) == 0) {
661            return 1;
662        }
663        size = size/2;
664        align = size;
665    } while (size >= min);
666
667    return 0;
668}
669
670
671static int yenta_search_res(struct yenta_socket *socket, struct resource *res,
672                u32 min)
673{
674    struct resource *root;
675    int i;
676
677    pci_bus_for_each_resource(socket->dev->bus, root, i) {
678        if (!root)
679            continue;
680
681        if ((res->flags ^ root->flags) &
682            (IORESOURCE_IO | IORESOURCE_MEM | IORESOURCE_PREFETCH))
683            continue; /* Wrong type */
684
685        if (yenta_search_one_res(root, res, min))
686            return 1;
687    }
688    return 0;
689}
690
691static int yenta_allocate_res(struct yenta_socket *socket, int nr, unsigned type, int addr_start, int addr_end)
692{
693    struct pci_dev *dev = socket->dev;
694    struct resource *res;
695    struct pci_bus_region region;
696    unsigned mask;
697
698    res = dev->resource + PCI_BRIDGE_RESOURCES + nr;
699    /* Already allocated? */
700    if (res->parent)
701        return 0;
702
703    /* The granularity of the memory limit is 4kB, on IO it's 4 bytes */
704    mask = ~0xfff;
705    if (type & IORESOURCE_IO)
706        mask = ~3;
707
708    res->name = dev->subordinate->name;
709    res->flags = type;
710
711    region.start = config_readl(socket, addr_start) & mask;
712    region.end = config_readl(socket, addr_end) | ~mask;
713    if (region.start && region.end > region.start && !override_bios) {
714        pcibios_bus_to_resource(dev, res, &region);
715        if (pci_claim_resource(dev, PCI_BRIDGE_RESOURCES + nr) == 0)
716            return 0;
717        dev_printk(KERN_INFO, &dev->dev,
718               "Preassigned resource %d busy or not available, "
719               "reconfiguring...\n",
720               nr);
721    }
722
723    if (type & IORESOURCE_IO) {
724        if ((yenta_search_res(socket, res, BRIDGE_IO_MAX)) ||
725            (yenta_search_res(socket, res, BRIDGE_IO_ACC)) ||
726            (yenta_search_res(socket, res, BRIDGE_IO_MIN)))
727            return 1;
728    } else {
729        if (type & IORESOURCE_PREFETCH) {
730            if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
731                (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
732                (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
733                return 1;
734            /* Approximating prefetchable by non-prefetchable */
735            res->flags = IORESOURCE_MEM;
736        }
737        if ((yenta_search_res(socket, res, BRIDGE_MEM_MAX)) ||
738            (yenta_search_res(socket, res, BRIDGE_MEM_ACC)) ||
739            (yenta_search_res(socket, res, BRIDGE_MEM_MIN)))
740            return 1;
741    }
742
743    dev_printk(KERN_INFO, &dev->dev,
744           "no resource of type %x available, trying to continue...\n",
745           type);
746    res->start = res->end = res->flags = 0;
747    return 0;
748}
749
750/*
751 * Allocate the bridge mappings for the device..
752 */
753static void yenta_allocate_resources(struct yenta_socket *socket)
754{
755    int program = 0;
756    program += yenta_allocate_res(socket, 0, IORESOURCE_IO,
757               PCI_CB_IO_BASE_0, PCI_CB_IO_LIMIT_0);
758    program += yenta_allocate_res(socket, 1, IORESOURCE_IO,
759               PCI_CB_IO_BASE_1, PCI_CB_IO_LIMIT_1);
760    program += yenta_allocate_res(socket, 2, IORESOURCE_MEM|IORESOURCE_PREFETCH,
761               PCI_CB_MEMORY_BASE_0, PCI_CB_MEMORY_LIMIT_0);
762    program += yenta_allocate_res(socket, 3, IORESOURCE_MEM,
763               PCI_CB_MEMORY_BASE_1, PCI_CB_MEMORY_LIMIT_1);
764    if (program)
765        pci_setup_cardbus(socket->dev->subordinate);
766}
767
768
769/*
770 * Free the bridge mappings for the device..
771 */
772static void yenta_free_resources(struct yenta_socket *socket)
773{
774    int i;
775    for (i = 0; i < 4; i++) {
776        struct resource *res;
777        res = socket->dev->resource + PCI_BRIDGE_RESOURCES + i;
778        if (res->start != 0 && res->end != 0)
779            release_resource(res);
780        res->start = res->end = res->flags = 0;
781    }
782}
783
784
785/*
786 * Close it down - release our resources and go home..
787 */
788static void __devexit yenta_close(struct pci_dev *dev)
789{
790    struct yenta_socket *sock = pci_get_drvdata(dev);
791
792    /* Remove the register attributes */
793    device_remove_file(&dev->dev, &dev_attr_yenta_registers);
794
795    /* we don't want a dying socket registered */
796    pcmcia_unregister_socket(&sock->socket);
797
798    /* Disable all events so we don't die in an IRQ storm */
799    cb_writel(sock, CB_SOCKET_MASK, 0x0);
800    exca_writeb(sock, I365_CSCINT, 0);
801
802    if (sock->cb_irq)
803        free_irq(sock->cb_irq, sock);
804    else
805        del_timer_sync(&sock->poll_timer);
806
807    if (sock->base)
808        iounmap(sock->base);
809    yenta_free_resources(sock);
810
811    pci_release_regions(dev);
812    pci_disable_device(dev);
813    pci_set_drvdata(dev, NULL);
814}
815
816
817static struct pccard_operations yenta_socket_operations = {
818    .init = yenta_sock_init,
819    .suspend = yenta_sock_suspend,
820    .get_status = yenta_get_status,
821    .set_socket = yenta_set_socket,
822    .set_io_map = yenta_set_io_map,
823    .set_mem_map = yenta_set_mem_map,
824};
825
826
827#ifdef CONFIG_YENTA_TI
828#include "ti113x.h"
829#endif
830#ifdef CONFIG_YENTA_RICOH
831#include "ricoh.h"
832#endif
833#ifdef CONFIG_YENTA_TOSHIBA
834#include "topic.h"
835#endif
836#ifdef CONFIG_YENTA_O2
837#include "o2micro.h"
838#endif
839
840enum {
841    CARDBUS_TYPE_DEFAULT = -1,
842    CARDBUS_TYPE_TI,
843    CARDBUS_TYPE_TI113X,
844    CARDBUS_TYPE_TI12XX,
845    CARDBUS_TYPE_TI1250,
846    CARDBUS_TYPE_RICOH,
847    CARDBUS_TYPE_TOPIC95,
848    CARDBUS_TYPE_TOPIC97,
849    CARDBUS_TYPE_O2MICRO,
850    CARDBUS_TYPE_ENE,
851};
852
853/*
854 * Different cardbus controllers have slightly different
855 * initialization sequences etc details. List them here..
856 */
857static struct cardbus_type cardbus_type[] = {
858#ifdef CONFIG_YENTA_TI
859    [CARDBUS_TYPE_TI] = {
860        .override = ti_override,
861        .save_state = ti_save_state,
862        .restore_state = ti_restore_state,
863        .sock_init = ti_init,
864    },
865    [CARDBUS_TYPE_TI113X] = {
866        .override = ti113x_override,
867        .save_state = ti_save_state,
868        .restore_state = ti_restore_state,
869        .sock_init = ti_init,
870    },
871    [CARDBUS_TYPE_TI12XX] = {
872        .override = ti12xx_override,
873        .save_state = ti_save_state,
874        .restore_state = ti_restore_state,
875        .sock_init = ti_init,
876    },
877    [CARDBUS_TYPE_TI1250] = {
878        .override = ti1250_override,
879        .save_state = ti_save_state,
880        .restore_state = ti_restore_state,
881        .sock_init = ti_init,
882    },
883#endif
884#ifdef CONFIG_YENTA_RICOH
885    [CARDBUS_TYPE_RICOH] = {
886        .override = ricoh_override,
887        .save_state = ricoh_save_state,
888        .restore_state = ricoh_restore_state,
889    },
890#endif
891#ifdef CONFIG_YENTA_TOSHIBA
892    [CARDBUS_TYPE_TOPIC95] = {
893        .override = topic95_override,
894    },
895    [CARDBUS_TYPE_TOPIC97] = {
896        .override = topic97_override,
897    },
898#endif
899#ifdef CONFIG_YENTA_O2
900    [CARDBUS_TYPE_O2MICRO] = {
901        .override = o2micro_override,
902        .restore_state = o2micro_restore_state,
903    },
904#endif
905#ifdef CONFIG_YENTA_TI
906    [CARDBUS_TYPE_ENE] = {
907        .override = ene_override,
908        .save_state = ti_save_state,
909        .restore_state = ti_restore_state,
910        .sock_init = ti_init,
911    },
912#endif
913};
914
915
916static unsigned int yenta_probe_irq(struct yenta_socket *socket, u32 isa_irq_mask)
917{
918    int i;
919    unsigned long val;
920    u32 mask;
921    u8 reg;
922
923    /*
924     * Probe for usable interrupts using the force
925     * register to generate bogus card status events.
926     */
927    cb_writel(socket, CB_SOCKET_EVENT, -1);
928    cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
929    reg = exca_readb(socket, I365_CSCINT);
930    exca_writeb(socket, I365_CSCINT, 0);
931    val = probe_irq_on() & isa_irq_mask;
932    for (i = 1; i < 16; i++) {
933        if (!((val >> i) & 1))
934            continue;
935        exca_writeb(socket, I365_CSCINT, I365_CSC_STSCHG | (i << 4));
936        cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
937        udelay(100);
938        cb_writel(socket, CB_SOCKET_EVENT, -1);
939    }
940    cb_writel(socket, CB_SOCKET_MASK, 0);
941    exca_writeb(socket, I365_CSCINT, reg);
942
943    mask = probe_irq_mask(val) & 0xffff;
944
945    return mask;
946}
947
948
949/*
950 * yenta PCI irq probing.
951 * currently only used in the TI/EnE initialization code
952 */
953#ifdef CONFIG_YENTA_TI
954
955/* interrupt handler, only used during probing */
956static irqreturn_t yenta_probe_handler(int irq, void *dev_id)
957{
958    struct yenta_socket *socket = (struct yenta_socket *) dev_id;
959    u8 csc;
960    u32 cb_event;
961
962    /* Clear interrupt status for the event */
963    cb_event = cb_readl(socket, CB_SOCKET_EVENT);
964    cb_writel(socket, CB_SOCKET_EVENT, -1);
965    csc = exca_readb(socket, I365_CSC);
966
967    if (cb_event || csc) {
968        socket->probe_status = 1;
969        return IRQ_HANDLED;
970    }
971
972    return IRQ_NONE;
973}
974
975/* probes the PCI interrupt, use only on override functions */
976static int yenta_probe_cb_irq(struct yenta_socket *socket)
977{
978    u8 reg;
979
980    if (!socket->cb_irq)
981        return -1;
982
983    socket->probe_status = 0;
984
985    if (request_irq(socket->cb_irq, yenta_probe_handler, IRQF_SHARED, "yenta", socket)) {
986        dev_printk(KERN_WARNING, &socket->dev->dev,
987               "request_irq() in yenta_probe_cb_irq() failed!\n");
988        return -1;
989    }
990
991    /* generate interrupt, wait */
992    reg = exca_readb(socket, I365_CSCINT);
993    exca_writeb(socket, I365_CSCINT, reg | I365_CSC_STSCHG);
994    cb_writel(socket, CB_SOCKET_EVENT, -1);
995    cb_writel(socket, CB_SOCKET_MASK, CB_CSTSMASK);
996    cb_writel(socket, CB_SOCKET_FORCE, CB_FCARDSTS);
997
998    msleep(100);
999
1000    /* disable interrupts */
1001    cb_writel(socket, CB_SOCKET_MASK, 0);
1002    exca_writeb(socket, I365_CSCINT, reg);
1003    cb_writel(socket, CB_SOCKET_EVENT, -1);
1004    exca_readb(socket, I365_CSC);
1005
1006    free_irq(socket->cb_irq, socket);
1007
1008    return (int) socket->probe_status;
1009}
1010
1011#endif /* CONFIG_YENTA_TI */
1012
1013
1014/*
1015 * Set static data that doesn't need re-initializing..
1016 */
1017static void yenta_get_socket_capabilities(struct yenta_socket *socket, u32 isa_irq_mask)
1018{
1019    socket->socket.pci_irq = socket->cb_irq;
1020    if (isa_probe)
1021        socket->socket.irq_mask = yenta_probe_irq(socket, isa_irq_mask);
1022    else
1023        socket->socket.irq_mask = 0;
1024
1025    dev_printk(KERN_INFO, &socket->dev->dev,
1026           "ISA IRQ mask 0x%04x, PCI irq %d\n",
1027           socket->socket.irq_mask, socket->cb_irq);
1028}
1029
1030/*
1031 * Initialize the standard cardbus registers
1032 */
1033static void yenta_config_init(struct yenta_socket *socket)
1034{
1035    u16 bridge;
1036    struct pci_dev *dev = socket->dev;
1037    struct pci_bus_region region;
1038
1039    pcibios_resource_to_bus(socket->dev, &region, &dev->resource[0]);
1040
1041    config_writel(socket, CB_LEGACY_MODE_BASE, 0);
1042    config_writel(socket, PCI_BASE_ADDRESS_0, region.start);
1043    config_writew(socket, PCI_COMMAND,
1044            PCI_COMMAND_IO |
1045            PCI_COMMAND_MEMORY |
1046            PCI_COMMAND_MASTER |
1047            PCI_COMMAND_WAIT);
1048
1049    /* MAGIC NUMBERS! Fixme */
1050    config_writeb(socket, PCI_CACHE_LINE_SIZE, L1_CACHE_BYTES / 4);
1051    config_writeb(socket, PCI_LATENCY_TIMER, 168);
1052    config_writel(socket, PCI_PRIMARY_BUS,
1053        (176 << 24) | /* sec. latency timer */
1054        (dev->subordinate->subordinate << 16) | /* subordinate bus */
1055        (dev->subordinate->secondary << 8) | /* secondary bus */
1056        dev->subordinate->primary); /* primary bus */
1057
1058    /*
1059     * Set up the bridging state:
1060     * - enable write posting.
1061     * - memory window 0 prefetchable, window 1 non-prefetchable
1062     * - PCI interrupts enabled if a PCI interrupt exists..
1063     */
1064    bridge = config_readw(socket, CB_BRIDGE_CONTROL);
1065    bridge &= ~(CB_BRIDGE_CRST | CB_BRIDGE_PREFETCH1 | CB_BRIDGE_ISAEN | CB_BRIDGE_VGAEN);
1066    bridge |= CB_BRIDGE_PREFETCH0 | CB_BRIDGE_POSTEN;
1067    config_writew(socket, CB_BRIDGE_CONTROL, bridge);
1068}
1069
1070/**
1071 * yenta_fixup_parent_bridge - Fix subordinate bus# of the parent bridge
1072 * @cardbus_bridge: The PCI bus which the CardBus bridge bridges to
1073 *
1074 * Checks if devices on the bus which the CardBus bridge bridges to would be
1075 * invisible during PCI scans because of a misconfigured subordinate number
1076 * of the parent brige - some BIOSes seem to be too lazy to set it right.
1077 * Does the fixup carefully by checking how far it can go without conflicts.
1078 * See http\://bugzilla.kernel.org/show_bug.cgi?id=2944 for more information.
1079 */
1080static void yenta_fixup_parent_bridge(struct pci_bus *cardbus_bridge)
1081{
1082    struct list_head *tmp;
1083    unsigned char upper_limit;
1084    /*
1085     * We only check and fix the parent bridge: All systems which need
1086     * this fixup that have been reviewed are laptops and the only bridge
1087     * which needed fixing was the parent bridge of the CardBus bridge:
1088     */
1089    struct pci_bus *bridge_to_fix = cardbus_bridge->parent;
1090
1091    /* Check bus numbers are already set up correctly: */
1092    if (bridge_to_fix->subordinate >= cardbus_bridge->subordinate)
1093        return; /* The subordinate number is ok, nothing to do */
1094
1095    if (!bridge_to_fix->parent)
1096        return; /* Root bridges are ok */
1097
1098    /* stay within the limits of the bus range of the parent: */
1099    upper_limit = bridge_to_fix->parent->subordinate;
1100
1101    /* check the bus ranges of all silbling bridges to prevent overlap */
1102    list_for_each(tmp, &bridge_to_fix->parent->children) {
1103        struct pci_bus *silbling = pci_bus_b(tmp);
1104        /*
1105         * If the silbling has a higher secondary bus number
1106         * and it's secondary is equal or smaller than our
1107         * current upper limit, set the new upper limit to
1108         * the bus number below the silbling's range:
1109         */
1110        if (silbling->secondary > bridge_to_fix->subordinate
1111            && silbling->secondary <= upper_limit)
1112            upper_limit = silbling->secondary - 1;
1113    }
1114
1115    /* Show that the wanted subordinate number is not possible: */
1116    if (cardbus_bridge->subordinate > upper_limit)
1117        dev_printk(KERN_WARNING, &cardbus_bridge->dev,
1118               "Upper limit for fixing this "
1119               "bridge's parent bridge: #%02x\n", upper_limit);
1120
1121    /* If we have room to increase the bridge's subordinate number, */
1122    if (bridge_to_fix->subordinate < upper_limit) {
1123
1124        /* use the highest number of the hidden bus, within limits */
1125        unsigned char subordinate_to_assign =
1126            min(cardbus_bridge->subordinate, upper_limit);
1127
1128        dev_printk(KERN_INFO, &bridge_to_fix->dev,
1129               "Raising subordinate bus# of parent "
1130               "bus (#%02x) from #%02x to #%02x\n",
1131               bridge_to_fix->number,
1132               bridge_to_fix->subordinate, subordinate_to_assign);
1133
1134        /* Save the new subordinate in the bus struct of the bridge */
1135        bridge_to_fix->subordinate = subordinate_to_assign;
1136
1137        /* and update the PCI config space with the new subordinate */
1138        pci_write_config_byte(bridge_to_fix->self,
1139            PCI_SUBORDINATE_BUS, bridge_to_fix->subordinate);
1140    }
1141}
1142
1143/*
1144 * Initialize a cardbus controller. Make sure we have a usable
1145 * interrupt, and that we can map the cardbus area. Fill in the
1146 * socket information structure..
1147 */
1148static int __devinit yenta_probe(struct pci_dev *dev, const struct pci_device_id *id)
1149{
1150    struct yenta_socket *socket;
1151    int ret;
1152
1153    /*
1154     * If we failed to assign proper bus numbers for this cardbus
1155     * controller during PCI probe, its subordinate pci_bus is NULL.
1156     * Bail out if so.
1157     */
1158    if (!dev->subordinate) {
1159        dev_printk(KERN_ERR, &dev->dev, "no bus associated! "
1160               "(try 'pci=assign-busses')\n");
1161        return -ENODEV;
1162    }
1163
1164    socket = kzalloc(sizeof(struct yenta_socket), GFP_KERNEL);
1165    if (!socket)
1166        return -ENOMEM;
1167
1168    /* prepare pcmcia_socket */
1169    socket->socket.ops = &yenta_socket_operations;
1170    socket->socket.resource_ops = &pccard_nonstatic_ops;
1171    socket->socket.dev.parent = &dev->dev;
1172    socket->socket.driver_data = socket;
1173    socket->socket.owner = THIS_MODULE;
1174    socket->socket.features = SS_CAP_PAGE_REGS | SS_CAP_PCCARD;
1175    socket->socket.map_size = 0x1000;
1176    socket->socket.cb_dev = dev;
1177
1178    /* prepare struct yenta_socket */
1179    socket->dev = dev;
1180    pci_set_drvdata(dev, socket);
1181
1182    /*
1183     * Do some basic sanity checking..
1184     */
1185    if (pci_enable_device(dev)) {
1186        ret = -EBUSY;
1187        goto free;
1188    }
1189
1190    ret = pci_request_regions(dev, "yenta_socket");
1191    if (ret)
1192        goto disable;
1193
1194    if (!pci_resource_start(dev, 0)) {
1195        dev_printk(KERN_ERR, &dev->dev, "No cardbus resource!\n");
1196        ret = -ENODEV;
1197        goto release;
1198    }
1199
1200    /*
1201     * Ok, start setup.. Map the cardbus registers,
1202     * and request the IRQ.
1203     */
1204    socket->base = ioremap(pci_resource_start(dev, 0), 0x1000);
1205    if (!socket->base) {
1206        ret = -ENOMEM;
1207        goto release;
1208    }
1209
1210    /*
1211     * report the subsystem vendor and device for help debugging
1212     * the irq stuff...
1213     */
1214    dev_printk(KERN_INFO, &dev->dev, "CardBus bridge found [%04x:%04x]\n",
1215           dev->subsystem_vendor, dev->subsystem_device);
1216
1217    yenta_config_init(socket);
1218
1219    /* Disable all events */
1220    cb_writel(socket, CB_SOCKET_MASK, 0x0);
1221
1222    /* Set up the bridge regions.. */
1223    yenta_allocate_resources(socket);
1224
1225    socket->cb_irq = dev->irq;
1226
1227    /* Do we have special options for the device? */
1228    if (id->driver_data != CARDBUS_TYPE_DEFAULT &&
1229        id->driver_data < ARRAY_SIZE(cardbus_type)) {
1230        socket->type = &cardbus_type[id->driver_data];
1231
1232        ret = socket->type->override(socket);
1233        if (ret < 0)
1234            goto unmap;
1235    }
1236
1237    /* We must finish initialization here */
1238
1239    if (!socket->cb_irq || request_irq(socket->cb_irq, yenta_interrupt, IRQF_SHARED, "yenta", socket)) {
1240        /* No IRQ or request_irq failed. Poll */
1241        socket->cb_irq = 0; /* But zero is a valid IRQ number. */
1242        init_timer(&socket->poll_timer);
1243        socket->poll_timer.function = yenta_interrupt_wrapper;
1244        socket->poll_timer.data = (unsigned long)socket;
1245        socket->poll_timer.expires = jiffies + HZ;
1246        add_timer(&socket->poll_timer);
1247        dev_printk(KERN_INFO, &dev->dev,
1248               "no PCI IRQ, CardBus support disabled for this "
1249               "socket.\n");
1250        dev_printk(KERN_INFO, &dev->dev,
1251               "check your BIOS CardBus, BIOS IRQ or ACPI "
1252               "settings.\n");
1253    } else {
1254        socket->socket.features |= SS_CAP_CARDBUS;
1255    }
1256
1257    /* Figure out what the dang thing can do for the PCMCIA layer... */
1258    yenta_interrogate(socket);
1259    yenta_get_socket_capabilities(socket, isa_interrupts);
1260    dev_printk(KERN_INFO, &dev->dev,
1261           "Socket status: %08x\n", cb_readl(socket, CB_SOCKET_STATE));
1262
1263    yenta_fixup_parent_bridge(dev->subordinate);
1264
1265    /* Register it with the pcmcia layer.. */
1266    ret = pcmcia_register_socket(&socket->socket);
1267    if (ret == 0) {
1268        /* Add the yenta register attributes */
1269        ret = device_create_file(&dev->dev, &dev_attr_yenta_registers);
1270        if (ret == 0)
1271            goto out;
1272
1273        /* error path... */
1274        pcmcia_unregister_socket(&socket->socket);
1275    }
1276
1277 unmap:
1278    iounmap(socket->base);
1279 release:
1280    pci_release_regions(dev);
1281 disable:
1282    pci_disable_device(dev);
1283 free:
1284    kfree(socket);
1285 out:
1286    return ret;
1287}
1288
1289#ifdef CONFIG_PM
1290static int yenta_dev_suspend_noirq(struct device *dev)
1291{
1292    struct pci_dev *pdev = to_pci_dev(dev);
1293    struct yenta_socket *socket = pci_get_drvdata(pdev);
1294
1295    if (!socket)
1296        return 0;
1297
1298    if (socket->type && socket->type->save_state)
1299        socket->type->save_state(socket);
1300
1301    pci_save_state(pdev);
1302    pci_read_config_dword(pdev, 16*4, &socket->saved_state[0]);
1303    pci_read_config_dword(pdev, 17*4, &socket->saved_state[1]);
1304    pci_disable_device(pdev);
1305
1306    /*
1307     * Some laptops (IBM T22) do not like us putting the Cardbus
1308     * bridge into D3. At a guess, some other laptop will
1309     * probably require this, so leave it commented out for now.
1310     */
1311    /* pci_set_power_state(dev, 3); */
1312
1313    return 0;
1314}
1315
1316static int yenta_dev_resume_noirq(struct device *dev)
1317{
1318    struct pci_dev *pdev = to_pci_dev(dev);
1319    struct yenta_socket *socket = pci_get_drvdata(pdev);
1320    int ret;
1321
1322    if (!socket)
1323        return 0;
1324
1325    pci_write_config_dword(pdev, 16*4, socket->saved_state[0]);
1326    pci_write_config_dword(pdev, 17*4, socket->saved_state[1]);
1327
1328    ret = pci_enable_device(pdev);
1329    if (ret)
1330        return ret;
1331
1332    pci_set_master(pdev);
1333
1334    if (socket->type && socket->type->restore_state)
1335        socket->type->restore_state(socket);
1336
1337    return 0;
1338}
1339
1340static const struct dev_pm_ops yenta_pm_ops = {
1341    .suspend_noirq = yenta_dev_suspend_noirq,
1342    .resume_noirq = yenta_dev_resume_noirq,
1343    .freeze_noirq = yenta_dev_suspend_noirq,
1344    .thaw_noirq = yenta_dev_resume_noirq,
1345    .poweroff_noirq = yenta_dev_suspend_noirq,
1346    .restore_noirq = yenta_dev_resume_noirq,
1347};
1348
1349#define YENTA_PM_OPS (&yenta_pm_ops)
1350#else
1351#define YENTA_PM_OPS NULL
1352#endif
1353
1354#define CB_ID(vend, dev, type) \
1355    { \
1356        .vendor = vend, \
1357        .device = dev, \
1358        .subvendor = PCI_ANY_ID, \
1359        .subdevice = PCI_ANY_ID, \
1360        .class = PCI_CLASS_BRIDGE_CARDBUS << 8, \
1361        .class_mask = ~0, \
1362        .driver_data = CARDBUS_TYPE_##type, \
1363    }
1364
1365static struct pci_device_id yenta_table[] = {
1366    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1031, TI),
1367
1368    /*
1369     * TBD: Check if these TI variants can use more
1370     * advanced overrides instead. (I can't get the
1371     * data sheets for these devices. --rmk)
1372     */
1373#ifdef CONFIG_YENTA_TI
1374    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1210, TI),
1375
1376    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1130, TI113X),
1377    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1131, TI113X),
1378
1379    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1211, TI12XX),
1380    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1220, TI12XX),
1381    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1221, TI12XX),
1382    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1225, TI12XX),
1383    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251A, TI12XX),
1384    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1251B, TI12XX),
1385    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1420, TI12XX),
1386    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1450, TI12XX),
1387    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1451A, TI12XX),
1388    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1510, TI12XX),
1389    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1520, TI12XX),
1390    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1620, TI12XX),
1391    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4410, TI12XX),
1392    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4450, TI12XX),
1393    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4451, TI12XX),
1394    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4510, TI12XX),
1395    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_4520, TI12XX),
1396
1397    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1250, TI1250),
1398    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_1410, TI1250),
1399
1400    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX21_XX11, TI12XX),
1401    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X515, TI12XX),
1402    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XX12, TI12XX),
1403    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X420, TI12XX),
1404    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_X620, TI12XX),
1405    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7410, TI12XX),
1406    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7510, TI12XX),
1407    CB_ID(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_7610, TI12XX),
1408
1409    CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_710, ENE),
1410    CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_712, ENE),
1411    CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_720, ENE),
1412    CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_722, ENE),
1413    CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1211, ENE),
1414    CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1225, ENE),
1415    CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1410, ENE),
1416    CB_ID(PCI_VENDOR_ID_ENE, PCI_DEVICE_ID_ENE_1420, ENE),
1417#endif /* CONFIG_YENTA_TI */
1418
1419#ifdef CONFIG_YENTA_RICOH
1420    CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C465, RICOH),
1421    CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C466, RICOH),
1422    CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C475, RICOH),
1423    CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, RICOH),
1424    CB_ID(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C478, RICOH),
1425#endif
1426
1427#ifdef CONFIG_YENTA_TOSHIBA
1428    CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC95, TOPIC95),
1429    CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC97, TOPIC97),
1430    CB_ID(PCI_VENDOR_ID_TOSHIBA, PCI_DEVICE_ID_TOSHIBA_TOPIC100, TOPIC97),
1431#endif
1432
1433#ifdef CONFIG_YENTA_O2
1434    CB_ID(PCI_VENDOR_ID_O2, PCI_ANY_ID, O2MICRO),
1435#endif
1436
1437    /* match any cardbus bridge */
1438    CB_ID(PCI_ANY_ID, PCI_ANY_ID, DEFAULT),
1439    { /* all zeroes */ }
1440};
1441MODULE_DEVICE_TABLE(pci, yenta_table);
1442
1443
1444static struct pci_driver yenta_cardbus_driver = {
1445    .name = "yenta_cardbus",
1446    .id_table = yenta_table,
1447    .probe = yenta_probe,
1448    .remove = __devexit_p(yenta_close),
1449    .driver.pm = YENTA_PM_OPS,
1450};
1451
1452
1453static int __init yenta_socket_init(void)
1454{
1455    return pci_register_driver(&yenta_cardbus_driver);
1456}
1457
1458
1459static void __exit yenta_socket_exit(void)
1460{
1461    pci_unregister_driver(&yenta_cardbus_driver);
1462}
1463
1464
1465module_init(yenta_socket_init);
1466module_exit(yenta_socket_exit);
1467
1468MODULE_LICENSE("GPL");
1469

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