pcmcia: convert pcmcia_request_configuration to pcmcia_enable_device
[linux-2.6.git] / drivers / pcmcia / i82092.c
1 /* 
2  * Driver for Intel I82092AA PCI-PCMCIA bridge.
3  *
4  * (C) 2001 Red Hat, Inc.
5  *
6  * Author: Arjan Van De Ven <arjanv@redhat.com>
7  * Loosly based on i82365.c from the pcmcia-cs package
8  */
9
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/pci.h>
13 #include <linux/init.h>
14 #include <linux/workqueue.h>
15 #include <linux/interrupt.h>
16 #include <linux/device.h>
17
18 #include <pcmcia/ss.h>
19
20 #include <asm/system.h>
21 #include <asm/io.h>
22
23 #include "i82092aa.h"
24 #include "i82365.h"
25
26 MODULE_LICENSE("GPL");
27
28 /* PCI core routines */
29 static struct pci_device_id i82092aa_pci_ids[] = {
30         {
31               .vendor = PCI_VENDOR_ID_INTEL,
32               .device = PCI_DEVICE_ID_INTEL_82092AA_0,
33               .subvendor = PCI_ANY_ID,
34               .subdevice = PCI_ANY_ID,
35          },
36          {} 
37 };
38 MODULE_DEVICE_TABLE(pci, i82092aa_pci_ids);
39
40 static struct pci_driver i82092aa_pci_driver = {
41         .name           = "i82092aa",
42         .id_table       = i82092aa_pci_ids,
43         .probe          = i82092aa_pci_probe,
44         .remove         = __devexit_p(i82092aa_pci_remove),
45 };
46
47
48 /* the pccard structure and its functions */
49 static struct pccard_operations i82092aa_operations = {
50         .init                   = i82092aa_init,
51         .get_status             = i82092aa_get_status,
52         .set_socket             = i82092aa_set_socket,
53         .set_io_map             = i82092aa_set_io_map,
54         .set_mem_map            = i82092aa_set_mem_map,
55 };
56
57 /* The card can do upto 4 sockets, allocate a structure for each of them */
58
59 struct socket_info {
60         int     number;
61         int     card_state;     /*  0 = no socket,
62                                     1 = empty socket, 
63                                     2 = card but not initialized,
64                                     3 = operational card */
65         unsigned int io_base;   /* base io address of the socket */
66         
67         struct pcmcia_socket socket;
68         struct pci_dev *dev;    /* The PCI device for the socket */
69 };
70
71 #define MAX_SOCKETS 4
72 static struct socket_info sockets[MAX_SOCKETS];
73 static int socket_count;  /* shortcut */                                                                                
74
75
76 static int __devinit i82092aa_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
77 {
78         unsigned char configbyte;
79         int i, ret;
80         
81         enter("i82092aa_pci_probe");
82         
83         if ((ret = pci_enable_device(dev)))
84                 return ret;
85                 
86         pci_read_config_byte(dev, 0x40, &configbyte);  /* PCI Configuration Control */
87         switch(configbyte&6) {
88                 case 0:
89                         socket_count = 2;
90                         break;
91                 case 2:
92                         socket_count = 1;
93                         break;
94                 case 4:
95                 case 6:
96                         socket_count = 4;
97                         break;
98                         
99                 default:
100                         printk(KERN_ERR "i82092aa: Oops, you did something we didn't think of.\n");
101                         ret = -EIO;
102                         goto err_out_disable;
103         }
104         printk(KERN_INFO "i82092aa: configured as a %d socket device.\n", socket_count);
105
106         if (!request_region(pci_resource_start(dev, 0), 2, "i82092aa")) {
107                 ret = -EBUSY;
108                 goto err_out_disable;
109         }
110         
111         for (i = 0;i<socket_count;i++) {
112                 sockets[i].card_state = 1; /* 1 = present but empty */
113                 sockets[i].io_base = pci_resource_start(dev, 0);
114                 sockets[i].socket.features |= SS_CAP_PCCARD;
115                 sockets[i].socket.map_size = 0x1000;
116                 sockets[i].socket.irq_mask = 0;
117                 sockets[i].socket.pci_irq  = dev->irq;
118                 sockets[i].socket.cb_dev  = dev;
119                 sockets[i].socket.owner = THIS_MODULE;
120
121                 sockets[i].number = i;
122                 
123                 if (card_present(i)) {
124                         sockets[i].card_state = 3;
125                         dprintk(KERN_DEBUG "i82092aa: slot %i is occupied\n",i);
126                 } else {
127                         dprintk(KERN_DEBUG "i82092aa: slot %i is vacant\n",i);
128                 }
129         }
130                 
131         /* Now, specifiy that all interrupts are to be done as PCI interrupts */
132         configbyte = 0xFF; /* bitmask, one bit per event, 1 = PCI interrupt, 0 = ISA interrupt */
133         pci_write_config_byte(dev, 0x50, configbyte); /* PCI Interrupt Routing Register */
134
135         /* Register the interrupt handler */
136         dprintk(KERN_DEBUG "Requesting interrupt %i \n",dev->irq);
137         if ((ret = request_irq(dev->irq, i82092aa_interrupt, IRQF_SHARED, "i82092aa", i82092aa_interrupt))) {
138                 printk(KERN_ERR "i82092aa: Failed to register IRQ %d, aborting\n", dev->irq);
139                 goto err_out_free_res;
140         }
141
142         pci_set_drvdata(dev, &sockets[i].socket);
143
144         for (i = 0; i<socket_count; i++) {
145                 sockets[i].socket.dev.parent = &dev->dev;
146                 sockets[i].socket.ops = &i82092aa_operations;
147                 sockets[i].socket.resource_ops = &pccard_nonstatic_ops;
148                 ret = pcmcia_register_socket(&sockets[i].socket);
149                 if (ret) {
150                         goto err_out_free_sockets;
151                 }
152         }
153
154         leave("i82092aa_pci_probe");
155         return 0;
156
157 err_out_free_sockets:
158         if (i) {
159                 for (i--;i>=0;i--) {
160                         pcmcia_unregister_socket(&sockets[i].socket);
161                 }
162         }
163         free_irq(dev->irq, i82092aa_interrupt);
164 err_out_free_res:
165         release_region(pci_resource_start(dev, 0), 2);
166 err_out_disable:
167         pci_disable_device(dev);
168         return ret;                     
169 }
170
171 static void __devexit i82092aa_pci_remove(struct pci_dev *dev)
172 {
173         struct pcmcia_socket *socket = pci_get_drvdata(dev);
174
175         enter("i82092aa_pci_remove");
176         
177         free_irq(dev->irq, i82092aa_interrupt);
178
179         if (socket)
180                 pcmcia_unregister_socket(socket);
181
182         leave("i82092aa_pci_remove");
183 }
184
185 static DEFINE_SPINLOCK(port_lock);
186
187 /* basic value read/write functions */
188
189 static unsigned char indirect_read(int socket, unsigned short reg)
190 {
191         unsigned short int port;
192         unsigned char val;
193         unsigned long flags;
194         spin_lock_irqsave(&port_lock,flags);
195         reg += socket * 0x40;
196         port = sockets[socket].io_base;
197         outb(reg,port);
198         val = inb(port+1);
199         spin_unlock_irqrestore(&port_lock,flags);
200         return val;
201 }
202
203 #if 0
204 static unsigned short indirect_read16(int socket, unsigned short reg)
205 {
206         unsigned short int port;
207         unsigned short tmp;
208         unsigned long flags;
209         spin_lock_irqsave(&port_lock,flags);
210         reg  = reg + socket * 0x40;
211         port = sockets[socket].io_base;
212         outb(reg,port);
213         tmp = inb(port+1);
214         reg++;
215         outb(reg,port);
216         tmp = tmp | (inb(port+1)<<8);
217         spin_unlock_irqrestore(&port_lock,flags);
218         return tmp;
219 }
220 #endif
221
222 static void indirect_write(int socket, unsigned short reg, unsigned char value)
223 {
224         unsigned short int port;
225         unsigned long flags;
226         spin_lock_irqsave(&port_lock,flags);
227         reg = reg + socket * 0x40;
228         port = sockets[socket].io_base; 
229         outb(reg,port);
230         outb(value,port+1);
231         spin_unlock_irqrestore(&port_lock,flags);
232 }
233
234 static void indirect_setbit(int socket, unsigned short reg, unsigned char mask)
235 {
236         unsigned short int port;
237         unsigned char val;
238         unsigned long flags;
239         spin_lock_irqsave(&port_lock,flags);
240         reg = reg + socket * 0x40;
241         port = sockets[socket].io_base; 
242         outb(reg,port);
243         val = inb(port+1);
244         val |= mask;
245         outb(reg,port);
246         outb(val,port+1);
247         spin_unlock_irqrestore(&port_lock,flags);
248 }
249
250
251 static void indirect_resetbit(int socket, unsigned short reg, unsigned char mask)
252 {
253         unsigned short int port;
254         unsigned char val;
255         unsigned long flags;
256         spin_lock_irqsave(&port_lock,flags);
257         reg = reg + socket * 0x40;
258         port = sockets[socket].io_base; 
259         outb(reg,port);
260         val = inb(port+1);
261         val &= ~mask;
262         outb(reg,port);
263         outb(val,port+1);
264         spin_unlock_irqrestore(&port_lock,flags);
265 }
266
267 static void indirect_write16(int socket, unsigned short reg, unsigned short value)
268 {
269         unsigned short int port;
270         unsigned char val;
271         unsigned long flags;
272         spin_lock_irqsave(&port_lock,flags);
273         reg = reg + socket * 0x40;
274         port = sockets[socket].io_base; 
275         
276         outb(reg,port);
277         val = value & 255;
278         outb(val,port+1);
279         
280         reg++;
281         
282         outb(reg,port);
283         val = value>>8;
284         outb(val,port+1);
285         spin_unlock_irqrestore(&port_lock,flags);
286 }
287
288 /* simple helper functions */
289 /* External clock time, in nanoseconds.  120 ns = 8.33 MHz */
290 static int cycle_time = 120;
291
292 static int to_cycles(int ns)
293 {
294         if (cycle_time!=0)
295                 return ns/cycle_time;
296         else
297                 return 0;
298 }
299     
300
301 /* Interrupt handler functionality */
302
303 static irqreturn_t i82092aa_interrupt(int irq, void *dev)
304 {
305         int i;
306         int loopcount = 0;
307         int handled = 0;
308
309         unsigned int events, active=0;
310         
311 /*      enter("i82092aa_interrupt");*/
312         
313         while (1) {
314                 loopcount++;
315                 if (loopcount>20) {
316                         printk(KERN_ERR "i82092aa: infinite eventloop in interrupt \n");
317                         break;
318                 }
319                 
320                 active = 0;
321                 
322                 for (i=0;i<socket_count;i++) {
323                         int csc;
324                         if (sockets[i].card_state==0) /* Inactive socket, should not happen */
325                                 continue;
326                         
327                         csc = indirect_read(i,I365_CSC); /* card status change register */
328                         
329                         if (csc==0)  /* no events on this socket */
330                                 continue;
331                         handled = 1;
332                         events = 0;
333                          
334                         if (csc & I365_CSC_DETECT) {
335                                 events |= SS_DETECT;
336                                 printk("Card detected in socket %i!\n",i);
337                          }
338                         
339                         if (indirect_read(i,I365_INTCTL) & I365_PC_IOCARD) { 
340                                 /* For IO/CARDS, bit 0 means "read the card" */
341                                 events |= (csc & I365_CSC_STSCHG) ? SS_STSCHG : 0; 
342                         } else {
343                                 /* Check for battery/ready events */
344                                 events |= (csc & I365_CSC_BVD1) ? SS_BATDEAD : 0;
345                                 events |= (csc & I365_CSC_BVD2) ? SS_BATWARN : 0;
346                                 events |= (csc & I365_CSC_READY) ? SS_READY : 0;
347                         }
348                         
349                         if (events) {
350                                 pcmcia_parse_events(&sockets[i].socket, events);
351                         }
352                         active |= events;
353                 }
354                                 
355                 if (active==0) /* no more events to handle */
356                         break;                          
357                 
358         }
359         return IRQ_RETVAL(handled);
360 /*      leave("i82092aa_interrupt");*/
361 }
362
363
364
365 /* socket functions */
366
367 static int card_present(int socketno)
368 {       
369         unsigned int val;
370         enter("card_present");
371         
372         if ((socketno<0) || (socketno >= MAX_SOCKETS))
373                 return 0;
374         if (sockets[socketno].io_base == 0)
375                 return 0;
376
377                 
378         val = indirect_read(socketno, 1); /* Interface status register */
379         if ((val&12)==12) {
380                 leave("card_present 1");
381                 return 1;
382         }
383                 
384         leave("card_present 0");
385         return 0;
386 }
387
388 static void set_bridge_state(int sock)
389 {
390         enter("set_bridge_state");
391         indirect_write(sock, I365_GBLCTL,0x00);
392         indirect_write(sock, I365_GENCTL,0x00);
393         
394         indirect_setbit(sock, I365_INTCTL,0x08);
395         leave("set_bridge_state");
396 }
397
398
399
400
401
402       
403 static int i82092aa_init(struct pcmcia_socket *sock)
404 {
405         int i;
406         struct resource res = { .start = 0, .end = 0x0fff };
407         pccard_io_map io = { 0, 0, 0, 0, 1 };
408         pccard_mem_map mem = { .res = &res, };
409         
410         enter("i82092aa_init");
411                         
412         for (i = 0; i < 2; i++) {
413                 io.map = i;
414                 i82092aa_set_io_map(sock, &io);
415         }
416         for (i = 0; i < 5; i++) {
417                 mem.map = i;
418                 i82092aa_set_mem_map(sock, &mem);
419         }
420         
421         leave("i82092aa_init");
422         return 0;
423 }
424                                                                                                                                                                                                                                               
425 static int i82092aa_get_status(struct pcmcia_socket *socket, u_int *value)
426 {
427         unsigned int sock = container_of(socket, struct socket_info, socket)->number;
428         unsigned int status;
429         
430         enter("i82092aa_get_status");
431         
432         status = indirect_read(sock,I365_STATUS); /* Interface Status Register */
433         *value = 0;
434         
435         if ((status & I365_CS_DETECT) == I365_CS_DETECT) {
436                 *value |= SS_DETECT;
437         }
438                 
439         /* IO cards have a different meaning of bits 0,1 */
440         /* Also notice the inverse-logic on the bits */
441          if (indirect_read(sock, I365_INTCTL) & I365_PC_IOCARD) {
442                 /* IO card */
443                 if (!(status & I365_CS_STSCHG))
444                         *value |= SS_STSCHG;
445          } else { /* non I/O card */
446                 if (!(status & I365_CS_BVD1))
447                         *value |= SS_BATDEAD;
448                 if (!(status & I365_CS_BVD2))
449                         *value |= SS_BATWARN;
450                         
451          }
452          
453          if (status & I365_CS_WRPROT)
454                 (*value) |= SS_WRPROT;  /* card is write protected */
455          
456          if (status & I365_CS_READY)
457                 (*value) |= SS_READY;    /* card is not busy */
458                 
459          if (status & I365_CS_POWERON)
460                 (*value) |= SS_POWERON;  /* power is applied to the card */
461
462
463         leave("i82092aa_get_status");
464         return 0;
465 }
466
467
468 static int i82092aa_set_socket(struct pcmcia_socket *socket, socket_state_t *state) 
469 {
470         unsigned int sock = container_of(socket, struct socket_info, socket)->number;
471         unsigned char reg;
472         
473         enter("i82092aa_set_socket");
474         
475         /* First, set the global controller options */
476         
477         set_bridge_state(sock);
478         
479         /* Values for the IGENC register */
480         
481         reg = 0;
482         if (!(state->flags & SS_RESET))         /* The reset bit has "inverse" logic */
483                 reg = reg | I365_PC_RESET;  
484         if (state->flags & SS_IOCARD) 
485                 reg = reg | I365_PC_IOCARD;
486                 
487         indirect_write(sock,I365_INTCTL,reg); /* IGENC, Interrupt and General Control Register */
488         
489         /* Power registers */
490         
491         reg = I365_PWR_NORESET; /* default: disable resetdrv on resume */
492         
493         if (state->flags & SS_PWR_AUTO) {
494                 printk("Auto power\n");
495                 reg |= I365_PWR_AUTO;   /* automatic power mngmnt */
496         }
497         if (state->flags & SS_OUTPUT_ENA) {
498                 printk("Power Enabled \n");
499                 reg |= I365_PWR_OUT;    /* enable power */
500         }
501         
502         switch (state->Vcc) {
503                 case 0: 
504                         break;
505                 case 50: 
506                         printk("setting voltage to Vcc to 5V on socket %i\n",sock);
507                         reg |= I365_VCC_5V;
508                         break;
509                 default:
510                         printk("i82092aa: i82092aa_set_socket called with invalid VCC power value: %i ", state->Vcc);
511                         leave("i82092aa_set_socket");
512                         return -EINVAL;
513         }
514         
515         
516         switch (state->Vpp) {
517                 case 0: 
518                         printk("not setting Vpp on socket %i\n",sock);
519                         break;
520                 case 50: 
521                         printk("setting Vpp to 5.0 for socket %i\n",sock);
522                         reg |= I365_VPP1_5V | I365_VPP2_5V;
523                         break;
524                 case 120: 
525                         printk("setting Vpp to 12.0\n");
526                         reg |= I365_VPP1_12V | I365_VPP2_12V;
527                         break;
528                 default:
529                         printk("i82092aa: i82092aa_set_socket called with invalid VPP power value: %i ", state->Vcc);
530                         leave("i82092aa_set_socket");
531                         return -EINVAL;
532         }
533         
534         if (reg != indirect_read(sock,I365_POWER)) /* only write if changed */
535                 indirect_write(sock,I365_POWER,reg);
536                 
537         /* Enable specific interrupt events */
538         
539         reg = 0x00;
540         if (state->csc_mask & SS_DETECT) {
541                 reg |= I365_CSC_DETECT;
542         }
543         if (state->flags & SS_IOCARD) {
544                 if (state->csc_mask & SS_STSCHG)
545                         reg |= I365_CSC_STSCHG;
546         } else {
547                 if (state->csc_mask & SS_BATDEAD) 
548                         reg |= I365_CSC_BVD1;
549                 if (state->csc_mask & SS_BATWARN) 
550                         reg |= I365_CSC_BVD2;
551                 if (state->csc_mask & SS_READY) 
552                         reg |= I365_CSC_READY; 
553                                         
554         }
555         
556         /* now write the value and clear the (probably bogus) pending stuff by doing a dummy read*/
557         
558         indirect_write(sock,I365_CSCINT,reg);
559         (void)indirect_read(sock,I365_CSC);
560
561         leave("i82092aa_set_socket");
562         return 0;
563 }
564
565 static int i82092aa_set_io_map(struct pcmcia_socket *socket, struct pccard_io_map *io)
566 {
567         unsigned int sock = container_of(socket, struct socket_info, socket)->number;
568         unsigned char map, ioctl;
569         
570         enter("i82092aa_set_io_map");
571         
572         map = io->map;
573         
574         /* Check error conditions */    
575         if (map > 1) {
576                 leave("i82092aa_set_io_map with invalid map");
577                 return -EINVAL;
578         }
579         if ((io->start > 0xffff) || (io->stop > 0xffff) || (io->stop < io->start)){
580                 leave("i82092aa_set_io_map with invalid io");
581                 return -EINVAL;
582         }
583
584         /* Turn off the window before changing anything */ 
585         if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_IO(map))
586                 indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_IO(map));
587
588 /*      printk("set_io_map: Setting range to %x - %x \n",io->start,io->stop);  */
589         
590         /* write the new values */
591         indirect_write16(sock,I365_IO(map)+I365_W_START,io->start);             
592         indirect_write16(sock,I365_IO(map)+I365_W_STOP,io->stop);               
593                         
594         ioctl = indirect_read(sock,I365_IOCTL) & ~I365_IOCTL_MASK(map);
595         
596         if (io->flags & (MAP_16BIT|MAP_AUTOSZ))
597                 ioctl |= I365_IOCTL_16BIT(map);
598                 
599         indirect_write(sock,I365_IOCTL,ioctl);
600         
601         /* Turn the window back on if needed */
602         if (io->flags & MAP_ACTIVE)
603                 indirect_setbit(sock,I365_ADDRWIN,I365_ENA_IO(map));
604                         
605         leave("i82092aa_set_io_map");   
606         return 0;
607 }
608
609 static int i82092aa_set_mem_map(struct pcmcia_socket *socket, struct pccard_mem_map *mem)
610 {
611         struct socket_info *sock_info = container_of(socket, struct socket_info, socket);
612         unsigned int sock = sock_info->number;
613         struct pci_bus_region region;
614         unsigned short base, i;
615         unsigned char map;
616         
617         enter("i82092aa_set_mem_map");
618
619         pcibios_resource_to_bus(sock_info->dev, &region, mem->res);
620         
621         map = mem->map;
622         if (map > 4) {
623                 leave("i82092aa_set_mem_map: invalid map");
624                 return -EINVAL;
625         }
626         
627         
628         if ( (mem->card_start > 0x3ffffff) || (region.start > region.end) ||
629              (mem->speed > 1000) ) {
630                 leave("i82092aa_set_mem_map: invalid address / speed");
631                 printk("invalid mem map for socket %i: %llx to %llx with a "
632                         "start of %x\n",
633                         sock,
634                         (unsigned long long)region.start,
635                         (unsigned long long)region.end,
636                         mem->card_start);
637                 return -EINVAL;
638         }
639         
640         /* Turn off the window before changing anything */
641         if (indirect_read(sock, I365_ADDRWIN) & I365_ENA_MEM(map))
642                       indirect_resetbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
643                          
644                          
645 /*      printk("set_mem_map: Setting map %i range to %x - %x on socket %i, speed is %i, active = %i \n",map, region.start,region.end,sock,mem->speed,mem->flags & MAP_ACTIVE);  */
646
647         /* write the start address */
648         base = I365_MEM(map);
649         i = (region.start >> 12) & 0x0fff;
650         if (mem->flags & MAP_16BIT) 
651                 i |= I365_MEM_16BIT;
652         if (mem->flags & MAP_0WS)
653                 i |= I365_MEM_0WS;      
654         indirect_write16(sock,base+I365_W_START,i);
655                                
656         /* write the stop address */
657         
658         i= (region.end >> 12) & 0x0fff;
659         switch (to_cycles(mem->speed)) {
660                 case 0:
661                         break;
662                 case 1:
663                         i |= I365_MEM_WS0;
664                         break;
665                 case 2:
666                         i |= I365_MEM_WS1;
667                         break;
668                 default:
669                         i |= I365_MEM_WS1 | I365_MEM_WS0;
670                         break;
671         }
672         
673         indirect_write16(sock,base+I365_W_STOP,i);
674         
675         /* card start */
676         
677         i = ((mem->card_start - region.start) >> 12) & 0x3fff;
678         if (mem->flags & MAP_WRPROT)
679                 i |= I365_MEM_WRPROT;
680         if (mem->flags & MAP_ATTRIB) {
681 /*              printk("requesting attribute memory for socket %i\n",sock);*/
682                 i |= I365_MEM_REG;
683         } else {
684 /*              printk("requesting normal memory for socket %i\n",sock);*/
685         }
686         indirect_write16(sock,base+I365_W_OFF,i);
687         
688         /* Enable the window if necessary */
689         if (mem->flags & MAP_ACTIVE)
690                 indirect_setbit(sock, I365_ADDRWIN, I365_ENA_MEM(map));
691                     
692         leave("i82092aa_set_mem_map");
693         return 0;
694 }
695
696 static int i82092aa_module_init(void)
697 {
698         return pci_register_driver(&i82092aa_pci_driver);
699 }
700
701 static void i82092aa_module_exit(void)
702 {
703         enter("i82092aa_module_exit");
704         pci_unregister_driver(&i82092aa_pci_driver);
705         if (sockets[0].io_base>0)
706                          release_region(sockets[0].io_base, 2);
707         leave("i82092aa_module_exit");
708 }
709
710 module_init(i82092aa_module_init);
711 module_exit(i82092aa_module_exit);
712