1 /* Low-level parallel-port routines for 8255-based PC-style hardware.
3 * Authors: Phil Blundell <philb@gnu.org>
4 * Tim Waugh <tim@cyberelk.demon.co.uk>
5 * Jose Renau <renau@acm.org>
6 * David Campbell <campbell@torque.net>
9 * based on work by Grant Guenther <grant@torque.net> and Phil Blundell.
11 * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
12 * DMA support - Bert De Jonghe <bert@sophis.be>
13 * Many ECP bugs fixed. Fred Barnes & Jamie Lokier, 1999
14 * More PCI support now conditional on CONFIG_PCI, 03/2001, Paul G.
15 * Various hacks, Fred Barnes, 04/2001
16 * Updated probing logic - Adam Belay <ambx1@neo.rr.com>
19 /* This driver should work with any hardware that is broadly compatible
20 * with that in the IBM PC. This applies to the majority of integrated
21 * I/O chipsets that are commonly available. The expected register
28 * In addition, there are some optional registers:
32 * base+0x400 ECP config A
33 * base+0x401 ECP config B
34 * base+0x402 ECP control
36 * All registers are 8 bits wide and read/write. If your hardware differs
37 * only in register addresses (eg because your registers are on 32-bit
38 * word boundaries) then you can alter the constants in parport_pc.h to
41 * Note that the ECP registers may not start at offset 0x400 for PCI cards,
42 * but rather will start at port->base_hi.
45 #include <linux/config.h>
46 #include <linux/module.h>
47 #include <linux/init.h>
48 #include <linux/sched.h>
49 #include <linux/delay.h>
50 #include <linux/errno.h>
51 #include <linux/interrupt.h>
52 #include <linux/ioport.h>
53 #include <linux/kernel.h>
54 #include <linux/slab.h>
55 #include <linux/pci.h>
56 #include <linux/pnp.h>
57 #include <linux/sysctl.h>
61 #include <asm/uaccess.h>
63 #include <linux/parport.h>
64 #include <linux/parport_pc.h>
65 #include <linux/via.h>
66 #include <asm/parport.h>
68 #define PARPORT_PC_MAX_PORTS PARPORT_MAX
70 #ifdef CONFIG_ISA_DMA_API
83 #define ECR_MODE_MASK 0xe0
84 #define ECR_WRITE(p,v) frob_econtrol((p),0xff,(v))
89 #define DPRINTK printk
91 #define DPRINTK(stuff...)
96 static struct superio_struct { /* For Super-IO chips autodetection */
100 } superios[NR_SUPERIOS] __devinitdata = { {0,},};
102 static int user_specified;
103 #if defined(CONFIG_PARPORT_PC_SUPERIO) || \
104 (defined(CONFIG_PARPORT_1284) && defined(CONFIG_PARPORT_PC_FIFO))
105 static int verbose_probing;
107 static int pci_registered_parport;
108 static int pnp_registered_parport;
110 /* frob_control, but for ECR */
111 static void frob_econtrol (struct parport *pb, unsigned char m,
114 unsigned char ectr = 0;
117 ectr = inb (ECONTROL (pb));
119 DPRINTK (KERN_DEBUG "frob_econtrol(%02x,%02x): %02x -> %02x\n",
120 m, v, ectr, (ectr & ~m) ^ v);
122 outb ((ectr & ~m) ^ v, ECONTROL (pb));
125 static __inline__ void frob_set_mode (struct parport *p, int mode)
127 frob_econtrol (p, ECR_MODE_MASK, mode << 5);
130 #ifdef CONFIG_PARPORT_PC_FIFO
131 /* Safely change the mode bits in the ECR
134 -EBUSY: Could not drain FIFO in some finite amount of time,
137 static int change_mode(struct parport *p, int m)
139 const struct parport_pc_private *priv = p->physport->private_data;
143 DPRINTK(KERN_INFO "parport change_mode ECP-ISA to mode 0x%02x\n",m);
146 printk (KERN_DEBUG "change_mode: but there's no ECR!\n");
150 /* Bits <7:5> contain the mode. */
151 oecr = inb (ECONTROL (p));
152 mode = (oecr >> 5) & 0x7;
153 if (mode == m) return 0;
155 if (mode >= 2 && !(priv->ctr & 0x20)) {
156 /* This mode resets the FIFO, so we may
157 * have to wait for it to drain first. */
158 unsigned long expire = jiffies + p->physport->cad->timeout;
161 case ECR_PPF: /* Parallel Port FIFO mode */
162 case ECR_ECP: /* ECP Parallel Port mode */
163 /* Busy wait for 200us */
164 for (counter = 0; counter < 40; counter++) {
165 if (inb (ECONTROL (p)) & 0x01)
167 if (signal_pending (current)) break;
172 while (!(inb (ECONTROL (p)) & 0x01)) {
173 if (time_after_eq (jiffies, expire))
174 /* The FIFO is stuck. */
176 schedule_timeout_interruptible(msecs_to_jiffies(10));
177 if (signal_pending (current))
183 if (mode >= 2 && m >= 2) {
184 /* We have to go through mode 001 */
186 oecr |= ECR_PS2 << 5;
197 #ifdef CONFIG_PARPORT_1284
198 /* Find FIFO lossage; FIFO is reset */
200 static int get_fifo_residue (struct parport *p)
204 const struct parport_pc_private *priv = p->physport->private_data;
206 /* Adjust for the contents of the FIFO. */
207 for (residue = priv->fifo_depth; ; residue--) {
208 if (inb (ECONTROL (p)) & 0x2)
215 printk (KERN_DEBUG "%s: %d PWords were left in FIFO\n", p->name,
218 /* Reset the FIFO. */
219 frob_set_mode (p, ECR_PS2);
221 /* Now change to config mode and clean up. FIXME */
222 frob_set_mode (p, ECR_CNF);
223 cnfga = inb (CONFIGA (p));
224 printk (KERN_DEBUG "%s: cnfgA contains 0x%02x\n", p->name, cnfga);
226 if (!(cnfga & (1<<2))) {
227 printk (KERN_DEBUG "%s: Accounting for extra byte\n", p->name);
231 /* Don't care about partial PWords until support is added for
232 * PWord != 1 byte. */
234 /* Back to PS2 mode. */
235 frob_set_mode (p, ECR_PS2);
237 DPRINTK (KERN_DEBUG "*** get_fifo_residue: done residue collecting (ecr = 0x%2.2x)\n", inb (ECONTROL (p)));
241 #endif /* IEEE 1284 support */
242 #endif /* FIFO support */
245 * Clear TIMEOUT BIT in EPP MODE
247 * This is also used in SPP detection.
249 static int clear_epp_timeout(struct parport *pb)
253 if (!(parport_pc_read_status(pb) & 0x01))
256 /* To clear timeout some chips require double read */
257 parport_pc_read_status(pb);
258 r = parport_pc_read_status(pb);
259 outb (r | 0x01, STATUS (pb)); /* Some reset by writing 1 */
260 outb (r & 0xfe, STATUS (pb)); /* Others by writing 0 */
261 r = parport_pc_read_status(pb);
269 * Most of these aren't static because they may be used by the
270 * parport_xxx_yyy macros. extern __inline__ versions of several
271 * of these are in parport_pc.h.
274 static irqreturn_t parport_pc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
276 parport_generic_irq(irq, (struct parport *) dev_id, regs);
277 /* FIXME! Was it really ours? */
281 static void parport_pc_init_state(struct pardevice *dev, struct parport_state *s)
285 dev->port->irq != PARPORT_IRQ_NONE)
289 s->u.pc.ecr = 0x34; /* NetMos chip can cause problems 0x24;
293 static void parport_pc_save_state(struct parport *p, struct parport_state *s)
295 const struct parport_pc_private *priv = p->physport->private_data;
296 s->u.pc.ctr = priv->ctr;
298 s->u.pc.ecr = inb (ECONTROL (p));
301 static void parport_pc_restore_state(struct parport *p, struct parport_state *s)
303 struct parport_pc_private *priv = p->physport->private_data;
304 register unsigned char c = s->u.pc.ctr & priv->ctr_writable;
305 outb (c, CONTROL (p));
308 ECR_WRITE (p, s->u.pc.ecr);
311 #ifdef CONFIG_PARPORT_1284
312 static size_t parport_pc_epp_read_data (struct parport *port, void *buf,
313 size_t length, int flags)
317 if (flags & PARPORT_W91284PIC) {
318 unsigned char status;
319 size_t left = length;
321 /* use knowledge about data lines..:
322 * nFault is 0 if there is at least 1 byte in the Warp's FIFO
323 * pError is 1 if there are 16 bytes in the Warp's FIFO
325 status = inb (STATUS (port));
327 while (!(status & 0x08) && (got < length)) {
328 if ((left >= 16) && (status & 0x20) && !(status & 0x08)) {
329 /* can grab 16 bytes from warp fifo */
330 if (!((long)buf & 0x03)) {
331 insl (EPPDATA (port), buf, 4);
333 insb (EPPDATA (port), buf, 16);
339 /* grab single byte from the warp fifo */
340 *((char *)buf) = inb (EPPDATA (port));
345 status = inb (STATUS (port));
347 /* EPP timeout should never occur... */
348 printk (KERN_DEBUG "%s: EPP timeout occurred while talking to "
349 "w91284pic (should not have done)\n", port->name);
350 clear_epp_timeout (port);
355 if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
356 if (!(((long)buf | length) & 0x03)) {
357 insl (EPPDATA (port), buf, (length >> 2));
359 insb (EPPDATA (port), buf, length);
361 if (inb (STATUS (port)) & 0x01) {
362 clear_epp_timeout (port);
367 for (; got < length; got++) {
368 *((char*)buf) = inb (EPPDATA(port));
370 if (inb (STATUS (port)) & 0x01) {
372 clear_epp_timeout (port);
380 static size_t parport_pc_epp_write_data (struct parport *port, const void *buf,
381 size_t length, int flags)
385 if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
386 if (!(((long)buf | length) & 0x03)) {
387 outsl (EPPDATA (port), buf, (length >> 2));
389 outsb (EPPDATA (port), buf, length);
391 if (inb (STATUS (port)) & 0x01) {
392 clear_epp_timeout (port);
397 for (; written < length; written++) {
398 outb (*((char*)buf), EPPDATA(port));
400 if (inb (STATUS(port)) & 0x01) {
401 clear_epp_timeout (port);
409 static size_t parport_pc_epp_read_addr (struct parport *port, void *buf,
410 size_t length, int flags)
414 if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
415 insb (EPPADDR (port), buf, length);
416 if (inb (STATUS (port)) & 0x01) {
417 clear_epp_timeout (port);
422 for (; got < length; got++) {
423 *((char*)buf) = inb (EPPADDR (port));
425 if (inb (STATUS (port)) & 0x01) {
426 clear_epp_timeout (port);
434 static size_t parport_pc_epp_write_addr (struct parport *port,
435 const void *buf, size_t length,
440 if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
441 outsb (EPPADDR (port), buf, length);
442 if (inb (STATUS (port)) & 0x01) {
443 clear_epp_timeout (port);
448 for (; written < length; written++) {
449 outb (*((char*)buf), EPPADDR (port));
451 if (inb (STATUS (port)) & 0x01) {
452 clear_epp_timeout (port);
460 static size_t parport_pc_ecpepp_read_data (struct parport *port, void *buf,
461 size_t length, int flags)
465 frob_set_mode (port, ECR_EPP);
466 parport_pc_data_reverse (port);
467 parport_pc_write_control (port, 0x4);
468 got = parport_pc_epp_read_data (port, buf, length, flags);
469 frob_set_mode (port, ECR_PS2);
474 static size_t parport_pc_ecpepp_write_data (struct parport *port,
475 const void *buf, size_t length,
480 frob_set_mode (port, ECR_EPP);
481 parport_pc_write_control (port, 0x4);
482 parport_pc_data_forward (port);
483 written = parport_pc_epp_write_data (port, buf, length, flags);
484 frob_set_mode (port, ECR_PS2);
489 static size_t parport_pc_ecpepp_read_addr (struct parport *port, void *buf,
490 size_t length, int flags)
494 frob_set_mode (port, ECR_EPP);
495 parport_pc_data_reverse (port);
496 parport_pc_write_control (port, 0x4);
497 got = parport_pc_epp_read_addr (port, buf, length, flags);
498 frob_set_mode (port, ECR_PS2);
503 static size_t parport_pc_ecpepp_write_addr (struct parport *port,
504 const void *buf, size_t length,
509 frob_set_mode (port, ECR_EPP);
510 parport_pc_write_control (port, 0x4);
511 parport_pc_data_forward (port);
512 written = parport_pc_epp_write_addr (port, buf, length, flags);
513 frob_set_mode (port, ECR_PS2);
517 #endif /* IEEE 1284 support */
519 #ifdef CONFIG_PARPORT_PC_FIFO
520 static size_t parport_pc_fifo_write_block_pio (struct parport *port,
521 const void *buf, size_t length)
524 const unsigned char *bufp = buf;
525 size_t left = length;
526 unsigned long expire = jiffies + port->physport->cad->timeout;
527 const int fifo = FIFO (port);
528 int poll_for = 8; /* 80 usecs */
529 const struct parport_pc_private *priv = port->physport->private_data;
530 const int fifo_depth = priv->fifo_depth;
532 port = port->physport;
534 /* We don't want to be interrupted every character. */
535 parport_pc_disable_irq (port);
536 /* set nErrIntrEn and serviceIntr */
537 frob_econtrol (port, (1<<4) | (1<<2), (1<<4) | (1<<2));
540 parport_pc_data_forward (port); /* Must be in PS2 mode */
544 unsigned char ecrval = inb (ECONTROL (port));
547 if (need_resched() && time_before (jiffies, expire))
548 /* Can't yield the port. */
551 /* Anyone else waiting for the port? */
552 if (port->waithead) {
553 printk (KERN_DEBUG "Somebody wants the port\n");
558 /* FIFO is full. Wait for interrupt. */
560 /* Clear serviceIntr */
561 ECR_WRITE (port, ecrval & ~(1<<2));
563 ret = parport_wait_event (port, HZ);
566 if (!time_before (jiffies, expire)) {
568 printk (KERN_DEBUG "FIFO write timed out\n");
571 ecrval = inb (ECONTROL (port));
572 if (!(ecrval & (1<<2))) {
573 if (need_resched() &&
574 time_before (jiffies, expire))
583 /* Can't fail now. */
584 expire = jiffies + port->cad->timeout;
587 if (signal_pending (current))
591 /* FIFO is empty. Blast it full. */
592 const int n = left < fifo_depth ? left : fifo_depth;
593 outsb (fifo, bufp, n);
597 /* Adjust the poll time. */
598 if (i < (poll_for - 2)) poll_for--;
600 } else if (i++ < poll_for) {
602 ecrval = inb (ECONTROL (port));
606 /* Half-full (call me an optimist) */
612 dump_parport_state ("leave fifo_write_block_pio", port);
613 return length - left;
617 static size_t parport_pc_fifo_write_block_dma (struct parport *port,
618 const void *buf, size_t length)
621 unsigned long dmaflag;
622 size_t left = length;
623 const struct parport_pc_private *priv = port->physport->private_data;
624 dma_addr_t dma_addr, dma_handle;
625 size_t maxlen = 0x10000; /* max 64k per DMA transfer */
626 unsigned long start = (unsigned long) buf;
627 unsigned long end = (unsigned long) buf + length - 1;
629 dump_parport_state ("enter fifo_write_block_dma", port);
630 if (end < MAX_DMA_ADDRESS) {
631 /* If it would cross a 64k boundary, cap it at the end. */
632 if ((start ^ end) & ~0xffffUL)
633 maxlen = 0x10000 - (start & 0xffff);
635 dma_addr = dma_handle = pci_map_single(priv->dev, (void *)buf, length,
638 /* above 16 MB we use a bounce buffer as ISA-DMA is not possible */
639 maxlen = PAGE_SIZE; /* sizeof(priv->dma_buf) */
640 dma_addr = priv->dma_handle;
644 port = port->physport;
646 /* We don't want to be interrupted every character. */
647 parport_pc_disable_irq (port);
648 /* set nErrIntrEn and serviceIntr */
649 frob_econtrol (port, (1<<4) | (1<<2), (1<<4) | (1<<2));
652 parport_pc_data_forward (port); /* Must be in PS2 mode */
655 unsigned long expire = jiffies + port->physport->cad->timeout;
662 if (!dma_handle) /* bounce buffer ! */
663 memcpy(priv->dma_buf, buf, count);
665 dmaflag = claim_dma_lock();
666 disable_dma(port->dma);
667 clear_dma_ff(port->dma);
668 set_dma_mode(port->dma, DMA_MODE_WRITE);
669 set_dma_addr(port->dma, dma_addr);
670 set_dma_count(port->dma, count);
673 frob_econtrol (port, 1<<3, 1<<3);
675 /* Clear serviceIntr */
676 frob_econtrol (port, 1<<2, 0);
678 enable_dma(port->dma);
679 release_dma_lock(dmaflag);
681 /* assume DMA will be successful */
684 if (dma_handle) dma_addr += count;
686 /* Wait for interrupt. */
688 ret = parport_wait_event (port, HZ);
691 if (!time_before (jiffies, expire)) {
693 printk (KERN_DEBUG "DMA write timed out\n");
696 /* Is serviceIntr set? */
697 if (!(inb (ECONTROL (port)) & (1<<2))) {
703 dmaflag = claim_dma_lock();
704 disable_dma(port->dma);
705 clear_dma_ff(port->dma);
706 count = get_dma_residue(port->dma);
707 release_dma_lock(dmaflag);
709 cond_resched(); /* Can't yield the port. */
711 /* Anyone else waiting for the port? */
712 if (port->waithead) {
713 printk (KERN_DEBUG "Somebody wants the port\n");
717 /* update for possible DMA residue ! */
720 if (dma_handle) dma_addr -= count;
723 /* Maybe got here through break, so adjust for DMA residue! */
724 dmaflag = claim_dma_lock();
725 disable_dma(port->dma);
726 clear_dma_ff(port->dma);
727 left += get_dma_residue(port->dma);
728 release_dma_lock(dmaflag);
730 /* Turn off DMA mode */
731 frob_econtrol (port, 1<<3, 0);
734 pci_unmap_single(priv->dev, dma_handle, length, PCI_DMA_TODEVICE);
736 dump_parport_state ("leave fifo_write_block_dma", port);
737 return length - left;
741 static inline size_t parport_pc_fifo_write_block(struct parport *port,
742 const void *buf, size_t length)
745 if (port->dma != PARPORT_DMA_NONE)
746 return parport_pc_fifo_write_block_dma (port, buf, length);
748 return parport_pc_fifo_write_block_pio (port, buf, length);
751 /* Parallel Port FIFO mode (ECP chipsets) */
752 static size_t parport_pc_compat_write_block_pio (struct parport *port,
753 const void *buf, size_t length,
758 unsigned long expire;
759 const struct parport_pc_private *priv = port->physport->private_data;
761 /* Special case: a timeout of zero means we cannot call schedule().
762 * Also if O_NONBLOCK is set then use the default implementation. */
763 if (port->physport->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
764 return parport_ieee1284_write_compat (port, buf,
767 /* Set up parallel port FIFO mode.*/
768 parport_pc_data_forward (port); /* Must be in PS2 mode */
769 parport_pc_frob_control (port, PARPORT_CONTROL_STROBE, 0);
770 r = change_mode (port, ECR_PPF); /* Parallel port FIFO */
771 if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_PPF failed\n", port->name);
773 port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
775 /* Write the data to the FIFO. */
776 written = parport_pc_fifo_write_block(port, buf, length);
779 /* For some hardware we don't want to touch the mode until
780 * the FIFO is empty, so allow 4 seconds for each position
783 expire = jiffies + (priv->fifo_depth * HZ * 4);
785 /* Wait for the FIFO to empty */
786 r = change_mode (port, ECR_PS2);
790 } while (time_before (jiffies, expire));
793 printk (KERN_DEBUG "%s: FIFO is stuck\n", port->name);
795 /* Prevent further data transfer. */
796 frob_set_mode (port, ECR_TST);
798 /* Adjust for the contents of the FIFO. */
799 for (written -= priv->fifo_depth; ; written++) {
800 if (inb (ECONTROL (port)) & 0x2) {
804 outb (0, FIFO (port));
807 /* Reset the FIFO and return to PS2 mode. */
808 frob_set_mode (port, ECR_PS2);
811 r = parport_wait_peripheral (port,
813 PARPORT_STATUS_BUSY);
816 "%s: BUSY timeout (%d) in compat_write_block_pio\n",
819 port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
825 #ifdef CONFIG_PARPORT_1284
826 static size_t parport_pc_ecp_write_block_pio (struct parport *port,
827 const void *buf, size_t length,
832 unsigned long expire;
833 const struct parport_pc_private *priv = port->physport->private_data;
835 /* Special case: a timeout of zero means we cannot call schedule().
836 * Also if O_NONBLOCK is set then use the default implementation. */
837 if (port->physport->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
838 return parport_ieee1284_ecp_write_data (port, buf,
841 /* Switch to forward mode if necessary. */
842 if (port->physport->ieee1284.phase != IEEE1284_PH_FWD_IDLE) {
843 /* Event 47: Set nInit high. */
844 parport_frob_control (port,
846 | PARPORT_CONTROL_AUTOFD,
848 | PARPORT_CONTROL_AUTOFD);
850 /* Event 49: PError goes high. */
851 r = parport_wait_peripheral (port,
852 PARPORT_STATUS_PAPEROUT,
853 PARPORT_STATUS_PAPEROUT);
855 printk (KERN_DEBUG "%s: PError timeout (%d) "
856 "in ecp_write_block_pio\n", port->name, r);
860 /* Set up ECP parallel port mode.*/
861 parport_pc_data_forward (port); /* Must be in PS2 mode */
862 parport_pc_frob_control (port,
863 PARPORT_CONTROL_STROBE |
864 PARPORT_CONTROL_AUTOFD,
866 r = change_mode (port, ECR_ECP); /* ECP FIFO */
867 if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_ECP failed\n", port->name);
868 port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
870 /* Write the data to the FIFO. */
871 written = parport_pc_fifo_write_block(port, buf, length);
874 /* For some hardware we don't want to touch the mode until
875 * the FIFO is empty, so allow 4 seconds for each position
878 expire = jiffies + (priv->fifo_depth * (HZ * 4));
880 /* Wait for the FIFO to empty */
881 r = change_mode (port, ECR_PS2);
885 } while (time_before (jiffies, expire));
888 printk (KERN_DEBUG "%s: FIFO is stuck\n", port->name);
890 /* Prevent further data transfer. */
891 frob_set_mode (port, ECR_TST);
893 /* Adjust for the contents of the FIFO. */
894 for (written -= priv->fifo_depth; ; written++) {
895 if (inb (ECONTROL (port)) & 0x2) {
899 outb (0, FIFO (port));
902 /* Reset the FIFO and return to PS2 mode. */
903 frob_set_mode (port, ECR_PS2);
905 /* Host transfer recovery. */
906 parport_pc_data_reverse (port); /* Must be in PS2 mode */
908 parport_frob_control (port, PARPORT_CONTROL_INIT, 0);
909 r = parport_wait_peripheral (port, PARPORT_STATUS_PAPEROUT, 0);
911 printk (KERN_DEBUG "%s: PE,1 timeout (%d) "
912 "in ecp_write_block_pio\n", port->name, r);
914 parport_frob_control (port,
915 PARPORT_CONTROL_INIT,
916 PARPORT_CONTROL_INIT);
917 r = parport_wait_peripheral (port,
918 PARPORT_STATUS_PAPEROUT,
919 PARPORT_STATUS_PAPEROUT);
921 printk (KERN_DEBUG "%s: PE,2 timeout (%d) "
922 "in ecp_write_block_pio\n", port->name, r);
925 r = parport_wait_peripheral (port,
927 PARPORT_STATUS_BUSY);
930 "%s: BUSY timeout (%d) in ecp_write_block_pio\n",
933 port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
939 static size_t parport_pc_ecp_read_block_pio (struct parport *port,
940 void *buf, size_t length,
943 size_t left = length;
946 const int fifo = FIFO(port);
947 const struct parport_pc_private *priv = port->physport->private_data;
948 const int fifo_depth = priv->fifo_depth;
951 port = port->physport;
952 DPRINTK (KERN_DEBUG "parport_pc: parport_pc_ecp_read_block_pio\n");
953 dump_parport_state ("enter fcn", port);
955 /* Special case: a timeout of zero means we cannot call schedule().
956 * Also if O_NONBLOCK is set then use the default implementation. */
957 if (port->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
958 return parport_ieee1284_ecp_read_data (port, buf,
961 if (port->ieee1284.mode == IEEE1284_MODE_ECPRLE) {
962 /* If the peripheral is allowed to send RLE compressed
963 * data, it is possible for a byte to expand to 128
964 * bytes in the FIFO. */
967 fifofull = fifo_depth;
970 /* If the caller wants less than a full FIFO's worth of data,
971 * go through software emulation. Otherwise we may have to throw
973 if (length < fifofull)
974 return parport_ieee1284_ecp_read_data (port, buf,
977 if (port->ieee1284.phase != IEEE1284_PH_REV_IDLE) {
978 /* change to reverse-idle phase (must be in forward-idle) */
980 /* Event 38: Set nAutoFd low (also make sure nStrobe is high) */
981 parport_frob_control (port,
982 PARPORT_CONTROL_AUTOFD
983 | PARPORT_CONTROL_STROBE,
984 PARPORT_CONTROL_AUTOFD);
985 parport_pc_data_reverse (port); /* Must be in PS2 mode */
987 /* Event 39: Set nInit low to initiate bus reversal */
988 parport_frob_control (port,
989 PARPORT_CONTROL_INIT,
991 /* Event 40: Wait for nAckReverse (PError) to go low */
992 r = parport_wait_peripheral (port, PARPORT_STATUS_PAPEROUT, 0);
994 printk (KERN_DEBUG "%s: PE timeout Event 40 (%d) "
995 "in ecp_read_block_pio\n", port->name, r);
1000 /* Set up ECP FIFO mode.*/
1001 /* parport_pc_frob_control (port,
1002 PARPORT_CONTROL_STROBE |
1003 PARPORT_CONTROL_AUTOFD,
1004 PARPORT_CONTROL_AUTOFD); */
1005 r = change_mode (port, ECR_ECP); /* ECP FIFO */
1006 if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_ECP failed\n", port->name);
1008 port->ieee1284.phase = IEEE1284_PH_REV_DATA;
1010 /* the first byte must be collected manually */
1011 dump_parport_state ("pre 43", port);
1012 /* Event 43: Wait for nAck to go low */
1013 r = parport_wait_peripheral (port, PARPORT_STATUS_ACK, 0);
1015 /* timed out while reading -- no data */
1016 printk (KERN_DEBUG "PIO read timed out (initial byte)\n");
1020 *bufp++ = inb (DATA (port));
1022 dump_parport_state ("43-44", port);
1023 /* Event 44: nAutoFd (HostAck) goes high to acknowledge */
1024 parport_pc_frob_control (port,
1025 PARPORT_CONTROL_AUTOFD,
1027 dump_parport_state ("pre 45", port);
1028 /* Event 45: Wait for nAck to go high */
1029 /* r = parport_wait_peripheral (port, PARPORT_STATUS_ACK, PARPORT_STATUS_ACK); */
1030 dump_parport_state ("post 45", port);
1033 /* timed out while waiting for peripheral to respond to ack */
1034 printk (KERN_DEBUG "ECP PIO read timed out (waiting for nAck)\n");
1036 /* keep hold of the byte we've got already */
1039 /* Event 46: nAutoFd (HostAck) goes low to accept more data */
1040 parport_pc_frob_control (port,
1041 PARPORT_CONTROL_AUTOFD,
1042 PARPORT_CONTROL_AUTOFD);
1045 dump_parport_state ("rev idle", port);
1046 /* Do the transfer. */
1047 while (left > fifofull) {
1049 unsigned long expire = jiffies + port->cad->timeout;
1050 unsigned char ecrval = inb (ECONTROL (port));
1052 if (need_resched() && time_before (jiffies, expire))
1053 /* Can't yield the port. */
1056 /* At this point, the FIFO may already be full. In
1057 * that case ECP is already holding back the
1058 * peripheral (assuming proper design) with a delayed
1059 * handshake. Work fast to avoid a peripheral
1062 if (ecrval & 0x01) {
1063 /* FIFO is empty. Wait for interrupt. */
1064 dump_parport_state ("FIFO empty", port);
1066 /* Anyone else waiting for the port? */
1067 if (port->waithead) {
1068 printk (KERN_DEBUG "Somebody wants the port\n");
1072 /* Clear serviceIntr */
1073 ECR_WRITE (port, ecrval & ~(1<<2));
1075 dump_parport_state ("waiting", port);
1076 ret = parport_wait_event (port, HZ);
1077 DPRINTK (KERN_DEBUG "parport_wait_event returned %d\n", ret);
1081 if (!time_before (jiffies, expire)) {
1083 dump_parport_state ("timeout", port);
1084 printk (KERN_DEBUG "PIO read timed out\n");
1087 ecrval = inb (ECONTROL (port));
1088 if (!(ecrval & (1<<2))) {
1089 if (need_resched() &&
1090 time_before (jiffies, expire)) {
1096 /* Depending on how the FIFO threshold was
1097 * set, how long interrupt service took, and
1098 * how fast the peripheral is, we might be
1099 * lucky and have a just filled FIFO. */
1103 if (ecrval & 0x02) {
1105 dump_parport_state ("FIFO full", port);
1106 insb (fifo, bufp, fifo_depth);
1112 DPRINTK (KERN_DEBUG "*** ecp_read_block_pio: reading one byte from the FIFO\n");
1114 /* FIFO not filled. We will cycle this loop for a while
1115 * and either the peripheral will fill it faster,
1116 * tripping a fast empty with insb, or we empty it. */
1117 *bufp++ = inb (fifo);
1121 /* scoop up anything left in the FIFO */
1122 while (left && !(inb (ECONTROL (port) & 0x01))) {
1123 *bufp++ = inb (fifo);
1127 port->ieee1284.phase = IEEE1284_PH_REV_IDLE;
1128 dump_parport_state ("rev idle2", port);
1132 /* Go to forward idle mode to shut the peripheral up (event 47). */
1133 parport_frob_control (port, PARPORT_CONTROL_INIT, PARPORT_CONTROL_INIT);
1135 /* event 49: PError goes high */
1136 r = parport_wait_peripheral (port,
1137 PARPORT_STATUS_PAPEROUT,
1138 PARPORT_STATUS_PAPEROUT);
1141 "%s: PE timeout FWDIDLE (%d) in ecp_read_block_pio\n",
1145 port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
1149 int lost = get_fifo_residue (port);
1151 /* Shouldn't happen with compliant peripherals. */
1152 printk (KERN_DEBUG "%s: DATA LOSS (%d bytes)!\n",
1156 dump_parport_state ("fwd idle", port);
1157 return length - left;
1160 #endif /* IEEE 1284 support */
1161 #endif /* Allowed to use FIFO/DMA */
1165 * ******************************************
1166 * INITIALISATION AND MODULE STUFF BELOW HERE
1167 * ******************************************
1170 /* GCC is not inlining extern inline function later overwriten to non-inline,
1171 so we use outlined_ variants here. */
1172 static struct parport_operations parport_pc_ops =
1174 .write_data = parport_pc_write_data,
1175 .read_data = parport_pc_read_data,
1177 .write_control = parport_pc_write_control,
1178 .read_control = parport_pc_read_control,
1179 .frob_control = parport_pc_frob_control,
1181 .read_status = parport_pc_read_status,
1183 .enable_irq = parport_pc_enable_irq,
1184 .disable_irq = parport_pc_disable_irq,
1186 .data_forward = parport_pc_data_forward,
1187 .data_reverse = parport_pc_data_reverse,
1189 .init_state = parport_pc_init_state,
1190 .save_state = parport_pc_save_state,
1191 .restore_state = parport_pc_restore_state,
1193 .epp_write_data = parport_ieee1284_epp_write_data,
1194 .epp_read_data = parport_ieee1284_epp_read_data,
1195 .epp_write_addr = parport_ieee1284_epp_write_addr,
1196 .epp_read_addr = parport_ieee1284_epp_read_addr,
1198 .ecp_write_data = parport_ieee1284_ecp_write_data,
1199 .ecp_read_data = parport_ieee1284_ecp_read_data,
1200 .ecp_write_addr = parport_ieee1284_ecp_write_addr,
1202 .compat_write_data = parport_ieee1284_write_compat,
1203 .nibble_read_data = parport_ieee1284_read_nibble,
1204 .byte_read_data = parport_ieee1284_read_byte,
1206 .owner = THIS_MODULE,
1209 #ifdef CONFIG_PARPORT_PC_SUPERIO
1210 /* Super-IO chipset detection, Winbond, SMSC */
1211 static void __devinit show_parconfig_smsc37c669(int io, int key)
1213 int cr1,cr4,cra,cr23,cr26,cr27,i=0;
1214 static const char *modes[]={ "SPP and Bidirectional (PS/2)",
1235 if (verbose_probing) {
1236 printk (KERN_INFO "SMSC 37c669 LPT Config: cr_1=0x%02x, 4=0x%02x, "
1237 "A=0x%2x, 23=0x%02x, 26=0x%02x, 27=0x%02x\n",
1238 cr1,cr4,cra,cr23,cr26,cr27);
1240 /* The documentation calls DMA and IRQ-Lines by letters, so
1241 the board maker can/will wire them
1242 appropriately/randomly... G=reserved H=IDE-irq, */
1243 printk (KERN_INFO "SMSC LPT Config: io=0x%04x, irq=%c, dma=%c, "
1244 "fifo threshold=%d\n", cr23*4,
1245 (cr27 &0x0f) ? 'A'-1+(cr27 &0x0f): '-',
1246 (cr26 &0x0f) ? 'A'-1+(cr26 &0x0f): '-', cra & 0x0f);
1247 printk(KERN_INFO "SMSC LPT Config: enabled=%s power=%s\n",
1248 (cr23*4 >=0x100) ?"yes":"no", (cr1 & 4) ? "yes" : "no");
1249 printk(KERN_INFO "SMSC LPT Config: Port mode=%s, EPP version =%s\n",
1250 (cr1 & 0x08 ) ? "Standard mode only (SPP)" : modes[cr4 & 0x03],
1251 (cr4 & 0x40) ? "1.7" : "1.9");
1254 /* Heuristics ! BIOS setup for this mainboard device limits
1255 the choices to standard settings, i.e. io-address and IRQ
1256 are related, however DMA can be 1 or 3, assume DMA_A=DMA1,
1257 DMA_C=DMA3 (this is true e.g. for TYAN 1564D Tomcat IV) */
1258 if(cr23*4 >=0x100) { /* if active */
1259 while((superios[i].io!= 0) && (i<NR_SUPERIOS))
1262 printk(KERN_INFO "Super-IO: too many chips!\n");
1267 superios[i].io = 0x3bc;
1268 superios[i].irq = 7;
1271 superios[i].io = 0x378;
1272 superios[i].irq = 7;
1275 superios[i].io = 0x278;
1276 superios[i].irq = 5;
1279 if((d==1) || (d==3))
1282 superios[i].dma= PARPORT_DMA_NONE;
1288 static void __devinit show_parconfig_winbond(int io, int key)
1290 int cr30,cr60,cr61,cr70,cr74,crf0,i=0;
1291 static const char *modes[] = {
1292 "Standard (SPP) and Bidirectional(PS/2)", /* 0 */
1297 "EPP-1.7 and SPP", /* 5 */
1299 "ECP and EPP-1.7" };
1300 static char *irqtypes[] = { "pulsed low, high-Z", "follows nACK" };
1302 /* The registers are called compatible-PnP because the
1303 register layout is modelled after ISA-PnP, the access
1304 method is just another ... */
1307 outb(0x07,io); /* Register 7: Select Logical Device */
1308 outb(0x01,io+1); /* LD1 is Parallel Port */
1323 if (verbose_probing) {
1324 printk(KERN_INFO "Winbond LPT Config: cr_30=%02x 60,61=%02x%02x "
1325 "70=%02x 74=%02x, f0=%02x\n", cr30,cr60,cr61,cr70,cr74,crf0);
1326 printk(KERN_INFO "Winbond LPT Config: active=%s, io=0x%02x%02x irq=%d, ",
1327 (cr30 & 0x01) ? "yes":"no", cr60,cr61,cr70&0x0f );
1328 if ((cr74 & 0x07) > 3)
1329 printk("dma=none\n");
1331 printk("dma=%d\n",cr74 & 0x07);
1332 printk(KERN_INFO "Winbond LPT Config: irqtype=%s, ECP fifo threshold=%d\n",
1333 irqtypes[crf0>>7], (crf0>>3)&0x0f);
1334 printk(KERN_INFO "Winbond LPT Config: Port mode=%s\n", modes[crf0 & 0x07]);
1337 if(cr30 & 0x01) { /* the settings can be interrogated later ... */
1338 while((superios[i].io!= 0) && (i<NR_SUPERIOS))
1341 printk(KERN_INFO "Super-IO: too many chips!\n");
1343 superios[i].io = (cr60<<8)|cr61;
1344 superios[i].irq = cr70&0x0f;
1345 superios[i].dma = (((cr74 & 0x07) > 3) ?
1346 PARPORT_DMA_NONE : (cr74 & 0x07));
1351 static void __devinit decode_winbond(int efer, int key, int devid, int devrev, int oldid)
1353 const char *type = "unknown";
1356 if (devid == devrev)
1357 /* simple heuristics, we happened to read some
1358 non-winbond register */
1361 id=(devid<<8) | devrev;
1363 /* Values are from public data sheets pdf files, I can just
1364 confirm 83977TF is correct :-) */
1365 if (id == 0x9771) type="83977F/AF";
1366 else if (id == 0x9773) type="83977TF / SMSC 97w33x/97w34x";
1367 else if (id == 0x9774) type="83977ATF";
1368 else if ((id & ~0x0f) == 0x5270) type="83977CTF / SMSC 97w36x";
1369 else if ((id & ~0x0f) == 0x52f0) type="83977EF / SMSC 97w35x";
1370 else if ((id & ~0x0f) == 0x5210) type="83627";
1371 else if ((id & ~0x0f) == 0x6010) type="83697HF";
1372 else if ((oldid &0x0f ) == 0x0a) { type="83877F"; progif=1;}
1373 else if ((oldid &0x0f ) == 0x0b) { type="83877AF"; progif=1;}
1374 else if ((oldid &0x0f ) == 0x0c) { type="83877TF"; progif=1;}
1375 else if ((oldid &0x0f ) == 0x0d) { type="83877ATF"; progif=1;}
1378 if (verbose_probing)
1379 printk(KERN_INFO "Winbond chip at EFER=0x%x key=0x%02x "
1380 "devid=%02x devrev=%02x oldid=%02x type=%s\n",
1381 efer, key, devid, devrev, oldid, type);
1384 show_parconfig_winbond(efer,key);
1387 static void __devinit decode_smsc(int efer, int key, int devid, int devrev)
1389 const char *type = "unknown";
1390 void (*func)(int io, int key);
1393 if (devid == devrev)
1394 /* simple heuristics, we happened to read some
1395 non-smsc register */
1399 id=(devid<<8) | devrev;
1401 if (id==0x0302) {type="37c669"; func=show_parconfig_smsc37c669;}
1402 else if (id==0x6582) type="37c665IR";
1403 else if (devid==0x65) type="37c665GT";
1404 else if (devid==0x66) type="37c666GT";
1406 if (verbose_probing)
1407 printk(KERN_INFO "SMSC chip at EFER=0x%x "
1408 "key=0x%02x devid=%02x devrev=%02x type=%s\n",
1409 efer, key, devid, devrev, type);
1416 static void __devinit winbond_check(int io, int key)
1418 int devid,devrev,oldid,x_devid,x_devrev,x_oldid;
1420 if (!request_region(io, 3, __FUNCTION__))
1423 /* First probe without key */
1432 outb(key,io); /* Write Magic Sequence to EFER, extended
1433 funtion enable register */
1434 outb(0x20,io); /* Write EFIR, extended function index register */
1435 devid=inb(io+1); /* Read EFDR, extended function data register */
1440 outb(0xaa,io); /* Magic Seal */
1442 if ((x_devid == devid) && (x_devrev == devrev) && (x_oldid == oldid))
1443 goto out; /* protection against false positives */
1445 decode_winbond(io,key,devid,devrev,oldid);
1447 release_region(io, 3);
1450 static void __devinit winbond_check2(int io,int key)
1452 int devid,devrev,oldid,x_devid,x_devrev,x_oldid;
1454 if (!request_region(io, 3, __FUNCTION__))
1457 /* First probe without the key */
1465 outb(key,io); /* Write Magic Byte to EFER, extended
1466 funtion enable register */
1467 outb(0x20,io+2); /* Write EFIR, extended function index register */
1468 devid=inb(io+2); /* Read EFDR, extended function data register */
1473 outb(0xaa,io); /* Magic Seal */
1475 if ((x_devid == devid) && (x_devrev == devrev) && (x_oldid == oldid))
1476 goto out; /* protection against false positives */
1478 decode_winbond(io,key,devid,devrev,oldid);
1480 release_region(io, 3);
1483 static void __devinit smsc_check(int io, int key)
1485 int id,rev,oldid,oldrev,x_id,x_rev,x_oldid,x_oldrev;
1487 if (!request_region(io, 3, __FUNCTION__))
1490 /* First probe without the key */
1501 outb(key,io); /* Write Magic Sequence to EFER, extended
1502 funtion enable register */
1503 outb(0x0d,io); /* Write EFIR, extended function index register */
1504 oldid=inb(io+1); /* Read EFDR, extended function data register */
1511 outb(0xaa,io); /* Magic Seal */
1513 if ((x_id == id) && (x_oldrev == oldrev) &&
1514 (x_oldid == oldid) && (x_rev == rev))
1515 goto out; /* protection against false positives */
1517 decode_smsc(io,key,oldid,oldrev);
1519 release_region(io, 3);
1523 static void __devinit detect_and_report_winbond (void)
1525 if (verbose_probing)
1526 printk(KERN_DEBUG "Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ...\n");
1527 winbond_check(0x3f0,0x87);
1528 winbond_check(0x370,0x87);
1529 winbond_check(0x2e ,0x87);
1530 winbond_check(0x4e ,0x87);
1531 winbond_check(0x3f0,0x86);
1532 winbond_check2(0x250,0x88);
1533 winbond_check2(0x250,0x89);
1536 static void __devinit detect_and_report_smsc (void)
1538 if (verbose_probing)
1539 printk(KERN_DEBUG "SMSC Super-IO detection, now testing Ports 2F0, 370 ...\n");
1540 smsc_check(0x3f0,0x55);
1541 smsc_check(0x370,0x55);
1542 smsc_check(0x3f0,0x44);
1543 smsc_check(0x370,0x44);
1545 #endif /* CONFIG_PARPORT_PC_SUPERIO */
1547 static int __devinit get_superio_dma (struct parport *p)
1550 while( (superios[i].io != p->base) && (i<NR_SUPERIOS))
1553 return superios[i].dma;
1554 return PARPORT_DMA_NONE;
1557 static int __devinit get_superio_irq (struct parport *p)
1560 while( (superios[i].io != p->base) && (i<NR_SUPERIOS))
1563 return superios[i].irq;
1564 return PARPORT_IRQ_NONE;
1568 /* --- Mode detection ------------------------------------- */
1571 * Checks for port existence, all ports support SPP MODE
1573 * 0 : No parallel port at this address
1574 * PARPORT_MODE_PCSPP : SPP port detected
1575 * (if the user specified an ioport himself,
1576 * this shall always be the case!)
1579 static int __devinit parport_SPP_supported(struct parport *pb)
1584 * first clear an eventually pending EPP timeout
1585 * I (sailer@ife.ee.ethz.ch) have an SMSC chipset
1586 * that does not even respond to SPP cycles if an EPP
1587 * timeout is pending
1589 clear_epp_timeout(pb);
1591 /* Do a simple read-write test to make sure the port exists. */
1593 outb (w, CONTROL (pb));
1595 /* Is there a control register that we can read from? Some
1596 * ports don't allow reads, so read_control just returns a
1597 * software copy. Some ports _do_ allow reads, so bypass the
1598 * software copy here. In addition, some bits aren't
1600 r = inb (CONTROL (pb));
1601 if ((r & 0xf) == w) {
1603 outb (w, CONTROL (pb));
1604 r = inb (CONTROL (pb));
1605 outb (0xc, CONTROL (pb));
1607 return PARPORT_MODE_PCSPP;
1611 /* That didn't work, but the user thinks there's a
1613 printk (KERN_INFO "parport 0x%lx (WARNING): CTR: "
1614 "wrote 0x%02x, read 0x%02x\n", pb->base, w, r);
1616 /* Try the data register. The data lines aren't tri-stated at
1617 * this stage, so we expect back what we wrote. */
1619 parport_pc_write_data (pb, w);
1620 r = parport_pc_read_data (pb);
1623 parport_pc_write_data (pb, w);
1624 r = parport_pc_read_data (pb);
1626 return PARPORT_MODE_PCSPP;
1629 if (user_specified) {
1630 /* Didn't work, but the user is convinced this is the
1632 printk (KERN_INFO "parport 0x%lx (WARNING): DATA: "
1633 "wrote 0x%02x, read 0x%02x\n", pb->base, w, r);
1634 printk (KERN_INFO "parport 0x%lx: You gave this address, "
1635 "but there is probably no parallel port there!\n",
1639 /* It's possible that we can't read the control register or
1640 * the data register. In that case just believe the user. */
1642 return PARPORT_MODE_PCSPP;
1649 * Old style XT ports alias io ports every 0x400, hence accessing ECR
1650 * on these cards actually accesses the CTR.
1652 * Modern cards don't do this but reading from ECR will return 0xff
1653 * regardless of what is written here if the card does NOT support
1656 * We first check to see if ECR is the same as CTR. If not, the low
1657 * two bits of ECR aren't writable, so we check by writing ECR and
1658 * reading it back to see if it's what we expect.
1660 static int __devinit parport_ECR_present(struct parport *pb)
1662 struct parport_pc_private *priv = pb->private_data;
1663 unsigned char r = 0xc;
1665 outb (r, CONTROL (pb));
1666 if ((inb (ECONTROL (pb)) & 0x3) == (r & 0x3)) {
1667 outb (r ^ 0x2, CONTROL (pb)); /* Toggle bit 1 */
1669 r = inb (CONTROL (pb));
1670 if ((inb (ECONTROL (pb)) & 0x2) == (r & 0x2))
1671 goto no_reg; /* Sure that no ECR register exists */
1674 if ((inb (ECONTROL (pb)) & 0x3 ) != 0x1)
1677 ECR_WRITE (pb, 0x34);
1678 if (inb (ECONTROL (pb)) != 0x35)
1682 outb (0xc, CONTROL (pb));
1684 /* Go to mode 000 */
1685 frob_set_mode (pb, ECR_SPP);
1690 outb (0xc, CONTROL (pb));
1694 #ifdef CONFIG_PARPORT_1284
1695 /* Detect PS/2 support.
1697 * Bit 5 (0x20) sets the PS/2 data direction; setting this high
1698 * allows us to read data from the data lines. In theory we would get back
1699 * 0xff but any peripheral attached to the port may drag some or all of the
1700 * lines down to zero. So if we get back anything that isn't the contents
1701 * of the data register we deem PS/2 support to be present.
1703 * Some SPP ports have "half PS/2" ability - you can't turn off the line
1704 * drivers, but an external peripheral with sufficiently beefy drivers of
1705 * its own can overpower them and assert its own levels onto the bus, from
1706 * where they can then be read back as normal. Ports with this property
1707 * and the right type of device attached are likely to fail the SPP test,
1708 * (as they will appear to have stuck bits) and so the fact that they might
1709 * be misdetected here is rather academic.
1712 static int __devinit parport_PS2_supported(struct parport *pb)
1716 clear_epp_timeout(pb);
1718 /* try to tri-state the buffer */
1719 parport_pc_data_reverse (pb);
1721 parport_pc_write_data(pb, 0x55);
1722 if (parport_pc_read_data(pb) != 0x55) ok++;
1724 parport_pc_write_data(pb, 0xaa);
1725 if (parport_pc_read_data(pb) != 0xaa) ok++;
1727 /* cancel input mode */
1728 parport_pc_data_forward (pb);
1731 pb->modes |= PARPORT_MODE_TRISTATE;
1733 struct parport_pc_private *priv = pb->private_data;
1734 priv->ctr_writable &= ~0x20;
1740 #ifdef CONFIG_PARPORT_PC_FIFO
1741 static int __devinit parport_ECP_supported(struct parport *pb)
1744 int config, configb;
1746 struct parport_pc_private *priv = pb->private_data;
1747 /* Translate ECP intrLine to ISA irq value */
1748 static const int intrline[]= { 0, 7, 9, 10, 11, 14, 15, 5 };
1750 /* If there is no ECR, we have no hope of supporting ECP. */
1754 /* Find out FIFO depth */
1755 ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
1756 ECR_WRITE (pb, ECR_TST << 5); /* TEST FIFO */
1757 for (i=0; i < 1024 && !(inb (ECONTROL (pb)) & 0x02); i++)
1758 outb (0xaa, FIFO (pb));
1761 * Using LGS chipset it uses ECR register, but
1762 * it doesn't support ECP or FIFO MODE
1765 ECR_WRITE (pb, ECR_SPP << 5);
1769 priv->fifo_depth = i;
1770 if (verbose_probing)
1771 printk (KERN_DEBUG "0x%lx: FIFO is %d bytes\n", pb->base, i);
1773 /* Find out writeIntrThreshold */
1774 frob_econtrol (pb, 1<<2, 1<<2);
1775 frob_econtrol (pb, 1<<2, 0);
1776 for (i = 1; i <= priv->fifo_depth; i++) {
1779 if (inb (ECONTROL (pb)) & (1<<2))
1783 if (i <= priv->fifo_depth) {
1784 if (verbose_probing)
1785 printk (KERN_DEBUG "0x%lx: writeIntrThreshold is %d\n",
1788 /* Number of bytes we know we can write if we get an
1792 priv->writeIntrThreshold = i;
1794 /* Find out readIntrThreshold */
1795 frob_set_mode (pb, ECR_PS2); /* Reset FIFO and enable PS2 */
1796 parport_pc_data_reverse (pb); /* Must be in PS2 mode */
1797 frob_set_mode (pb, ECR_TST); /* Test FIFO */
1798 frob_econtrol (pb, 1<<2, 1<<2);
1799 frob_econtrol (pb, 1<<2, 0);
1800 for (i = 1; i <= priv->fifo_depth; i++) {
1801 outb (0xaa, FIFO (pb));
1802 if (inb (ECONTROL (pb)) & (1<<2))
1806 if (i <= priv->fifo_depth) {
1807 if (verbose_probing)
1808 printk (KERN_INFO "0x%lx: readIntrThreshold is %d\n",
1811 /* Number of bytes we can read if we get an interrupt. */
1814 priv->readIntrThreshold = i;
1816 ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
1817 ECR_WRITE (pb, 0xf4); /* Configuration mode */
1818 config = inb (CONFIGA (pb));
1819 pword = (config >> 4) & 0x7;
1823 printk (KERN_WARNING "0x%lx: Unsupported pword size!\n",
1828 printk (KERN_WARNING "0x%lx: Unsupported pword size!\n",
1832 printk (KERN_WARNING "0x%lx: Unknown implementation ID\n",
1838 priv->pword = pword;
1840 if (verbose_probing) {
1841 printk (KERN_DEBUG "0x%lx: PWord is %d bits\n", pb->base, 8 * pword);
1843 printk (KERN_DEBUG "0x%lx: Interrupts are ISA-%s\n", pb->base,
1844 config & 0x80 ? "Level" : "Pulses");
1846 configb = inb (CONFIGB (pb));
1847 printk (KERN_DEBUG "0x%lx: ECP port cfgA=0x%02x cfgB=0x%02x\n",
1848 pb->base, config, configb);
1849 printk (KERN_DEBUG "0x%lx: ECP settings irq=", pb->base);
1850 if ((configb >>3) & 0x07)
1851 printk("%d",intrline[(configb >>3) & 0x07]);
1853 printk("<none or set by other means>");
1855 if( (configb & 0x03 ) == 0x00)
1856 printk("<none or set by other means>\n");
1858 printk("%d\n",configb & 0x07);
1861 /* Go back to mode 000 */
1862 frob_set_mode (pb, ECR_SPP);
1868 static int __devinit parport_ECPPS2_supported(struct parport *pb)
1870 const struct parport_pc_private *priv = pb->private_data;
1877 oecr = inb (ECONTROL (pb));
1878 ECR_WRITE (pb, ECR_PS2 << 5);
1879 result = parport_PS2_supported(pb);
1880 ECR_WRITE (pb, oecr);
1884 /* EPP mode detection */
1886 static int __devinit parport_EPP_supported(struct parport *pb)
1888 const struct parport_pc_private *priv = pb->private_data;
1892 * Bit 0 of STR is the EPP timeout bit, this bit is 0
1893 * when EPP is possible and is set high when an EPP timeout
1894 * occurs (EPP uses the HALT line to stop the CPU while it does
1895 * the byte transfer, an EPP timeout occurs if the attached
1896 * device fails to respond after 10 micro seconds).
1898 * This bit is cleared by either reading it (National Semi)
1899 * or writing a 1 to the bit (SMC, UMC, WinBond), others ???
1900 * This bit is always high in non EPP modes.
1903 /* If EPP timeout bit clear then EPP available */
1904 if (!clear_epp_timeout(pb)) {
1905 return 0; /* No way to clear timeout */
1908 /* Check for Intel bug. */
1911 for (i = 0x00; i < 0x80; i += 0x20) {
1913 if (clear_epp_timeout (pb)) {
1914 /* Phony EPP in ECP. */
1920 pb->modes |= PARPORT_MODE_EPP;
1922 /* Set up access functions to use EPP hardware. */
1923 pb->ops->epp_read_data = parport_pc_epp_read_data;
1924 pb->ops->epp_write_data = parport_pc_epp_write_data;
1925 pb->ops->epp_read_addr = parport_pc_epp_read_addr;
1926 pb->ops->epp_write_addr = parport_pc_epp_write_addr;
1931 static int __devinit parport_ECPEPP_supported(struct parport *pb)
1933 struct parport_pc_private *priv = pb->private_data;
1941 oecr = inb (ECONTROL (pb));
1942 /* Search for SMC style EPP+ECP mode */
1943 ECR_WRITE (pb, 0x80);
1944 outb (0x04, CONTROL (pb));
1945 result = parport_EPP_supported(pb);
1947 ECR_WRITE (pb, oecr);
1950 /* Set up access functions to use ECP+EPP hardware. */
1951 pb->ops->epp_read_data = parport_pc_ecpepp_read_data;
1952 pb->ops->epp_write_data = parport_pc_ecpepp_write_data;
1953 pb->ops->epp_read_addr = parport_pc_ecpepp_read_addr;
1954 pb->ops->epp_write_addr = parport_pc_ecpepp_write_addr;
1960 #else /* No IEEE 1284 support */
1962 /* Don't bother probing for modes we know we won't use. */
1963 static int __devinit parport_PS2_supported(struct parport *pb) { return 0; }
1964 #ifdef CONFIG_PARPORT_PC_FIFO
1965 static int __devinit parport_ECP_supported(struct parport *pb) { return 0; }
1967 static int __devinit parport_EPP_supported(struct parport *pb) { return 0; }
1968 static int __devinit parport_ECPEPP_supported(struct parport *pb){return 0;}
1969 static int __devinit parport_ECPPS2_supported(struct parport *pb){return 0;}
1971 #endif /* No IEEE 1284 support */
1973 /* --- IRQ detection -------------------------------------- */
1975 /* Only if supports ECP mode */
1976 static int __devinit programmable_irq_support(struct parport *pb)
1979 unsigned char oecr = inb (ECONTROL (pb));
1980 static const int lookup[8] = {
1981 PARPORT_IRQ_NONE, 7, 9, 10, 11, 14, 15, 5
1984 ECR_WRITE (pb, ECR_CNF << 5); /* Configuration MODE */
1986 intrLine = (inb (CONFIGB (pb)) >> 3) & 0x07;
1987 irq = lookup[intrLine];
1989 ECR_WRITE (pb, oecr);
1993 static int __devinit irq_probe_ECP(struct parport *pb)
1998 irqs = probe_irq_on();
2000 ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
2001 ECR_WRITE (pb, (ECR_TST << 5) | 0x04);
2002 ECR_WRITE (pb, ECR_TST << 5);
2004 /* If Full FIFO sure that writeIntrThreshold is generated */
2005 for (i=0; i < 1024 && !(inb (ECONTROL (pb)) & 0x02) ; i++)
2006 outb (0xaa, FIFO (pb));
2008 pb->irq = probe_irq_off(irqs);
2009 ECR_WRITE (pb, ECR_SPP << 5);
2012 pb->irq = PARPORT_IRQ_NONE;
2018 * This detection seems that only works in National Semiconductors
2019 * This doesn't work in SMC, LGS, and Winbond
2021 static int __devinit irq_probe_EPP(struct parport *pb)
2023 #ifndef ADVANCED_DETECT
2024 return PARPORT_IRQ_NONE;
2029 if (pb->modes & PARPORT_MODE_PCECR)
2030 oecr = inb (ECONTROL (pb));
2032 irqs = probe_irq_on();
2034 if (pb->modes & PARPORT_MODE_PCECR)
2035 frob_econtrol (pb, 0x10, 0x10);
2037 clear_epp_timeout(pb);
2038 parport_pc_frob_control (pb, 0x20, 0x20);
2039 parport_pc_frob_control (pb, 0x10, 0x10);
2040 clear_epp_timeout(pb);
2042 /* Device isn't expecting an EPP read
2043 * and generates an IRQ.
2045 parport_pc_read_epp(pb);
2048 pb->irq = probe_irq_off (irqs);
2049 if (pb->modes & PARPORT_MODE_PCECR)
2050 ECR_WRITE (pb, oecr);
2051 parport_pc_write_control(pb, 0xc);
2054 pb->irq = PARPORT_IRQ_NONE;
2057 #endif /* Advanced detection */
2060 static int __devinit irq_probe_SPP(struct parport *pb)
2062 /* Don't even try to do this. */
2063 return PARPORT_IRQ_NONE;
2066 /* We will attempt to share interrupt requests since other devices
2067 * such as sound cards and network cards seem to like using the
2070 * When ECP is available we can autoprobe for IRQs.
2071 * NOTE: If we can autoprobe it, we can register the IRQ.
2073 static int __devinit parport_irq_probe(struct parport *pb)
2075 struct parport_pc_private *priv = pb->private_data;
2078 pb->irq = programmable_irq_support(pb);
2080 if (pb->irq == PARPORT_IRQ_NONE)
2081 pb->irq = irq_probe_ECP(pb);
2084 if ((pb->irq == PARPORT_IRQ_NONE) && priv->ecr &&
2085 (pb->modes & PARPORT_MODE_EPP))
2086 pb->irq = irq_probe_EPP(pb);
2088 clear_epp_timeout(pb);
2090 if (pb->irq == PARPORT_IRQ_NONE && (pb->modes & PARPORT_MODE_EPP))
2091 pb->irq = irq_probe_EPP(pb);
2093 clear_epp_timeout(pb);
2095 if (pb->irq == PARPORT_IRQ_NONE)
2096 pb->irq = irq_probe_SPP(pb);
2098 if (pb->irq == PARPORT_IRQ_NONE)
2099 pb->irq = get_superio_irq(pb);
2104 /* --- DMA detection -------------------------------------- */
2106 /* Only if chipset conforms to ECP ISA Interface Standard */
2107 static int __devinit programmable_dma_support (struct parport *p)
2109 unsigned char oecr = inb (ECONTROL (p));
2112 frob_set_mode (p, ECR_CNF);
2114 dma = inb (CONFIGB(p)) & 0x07;
2115 /* 000: Indicates jumpered 8-bit DMA if read-only.
2116 100: Indicates jumpered 16-bit DMA if read-only. */
2117 if ((dma & 0x03) == 0)
2118 dma = PARPORT_DMA_NONE;
2120 ECR_WRITE (p, oecr);
2124 static int __devinit parport_dma_probe (struct parport *p)
2126 const struct parport_pc_private *priv = p->private_data;
2128 p->dma = programmable_dma_support(p); /* ask ECP chipset first */
2129 if (p->dma == PARPORT_DMA_NONE) {
2130 /* ask known Super-IO chips proper, although these
2131 claim ECP compatible, some don't report their DMA
2132 conforming to ECP standards */
2133 p->dma = get_superio_dma(p);
2139 /* --- Initialisation code -------------------------------- */
2141 static LIST_HEAD(ports_list);
2142 static DEFINE_SPINLOCK(ports_lock);
2144 struct parport *parport_pc_probe_port (unsigned long int base,
2145 unsigned long int base_hi,
2147 struct pci_dev *dev)
2149 struct parport_pc_private *priv;
2150 struct parport_operations *ops;
2152 int probedirq = PARPORT_IRQ_NONE;
2153 struct resource *base_res;
2154 struct resource *ECR_res = NULL;
2155 struct resource *EPP_res = NULL;
2157 ops = kmalloc(sizeof (struct parport_operations), GFP_KERNEL);
2161 priv = kmalloc (sizeof (struct parport_pc_private), GFP_KERNEL);
2165 /* a misnomer, actually - it's allocate and reserve parport number */
2166 p = parport_register_port(base, irq, dma, ops);
2170 base_res = request_region(base, 3, p->name);
2174 memcpy(ops, &parport_pc_ops, sizeof (struct parport_operations));
2176 priv->ctr_writable = ~0x10;
2178 priv->fifo_depth = 0;
2179 priv->dma_buf = NULL;
2180 priv->dma_handle = 0;
2182 INIT_LIST_HEAD(&priv->list);
2184 p->base_hi = base_hi;
2185 p->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_SAFEININT;
2186 p->private_data = priv;
2189 ECR_res = request_region(base_hi, 3, p->name);
2191 parport_ECR_present(p);
2194 if (base != 0x3bc) {
2195 EPP_res = request_region(base+0x3, 5, p->name);
2197 if (!parport_EPP_supported(p))
2198 parport_ECPEPP_supported(p);
2200 if (!parport_SPP_supported (p))
2204 parport_ECPPS2_supported(p);
2206 parport_PS2_supported(p);
2208 p->size = (p->modes & PARPORT_MODE_EPP)?8:3;
2210 printk(KERN_INFO "%s: PC-style at 0x%lx", p->name, p->base);
2211 if (p->base_hi && priv->ecr)
2212 printk(" (0x%lx)", p->base_hi);
2213 if (p->irq == PARPORT_IRQ_AUTO) {
2214 p->irq = PARPORT_IRQ_NONE;
2215 parport_irq_probe(p);
2216 } else if (p->irq == PARPORT_IRQ_PROBEONLY) {
2217 p->irq = PARPORT_IRQ_NONE;
2218 parport_irq_probe(p);
2220 p->irq = PARPORT_IRQ_NONE;
2222 if (p->irq != PARPORT_IRQ_NONE) {
2223 printk(", irq %d", p->irq);
2224 priv->ctr_writable |= 0x10;
2226 if (p->dma == PARPORT_DMA_AUTO) {
2227 p->dma = PARPORT_DMA_NONE;
2228 parport_dma_probe(p);
2231 if (p->dma == PARPORT_DMA_AUTO) /* To use DMA, giving the irq
2232 is mandatory (see above) */
2233 p->dma = PARPORT_DMA_NONE;
2235 #ifdef CONFIG_PARPORT_PC_FIFO
2236 if (parport_ECP_supported(p) &&
2237 p->dma != PARPORT_DMA_NOFIFO &&
2238 priv->fifo_depth > 0 && p->irq != PARPORT_IRQ_NONE) {
2239 p->modes |= PARPORT_MODE_ECP | PARPORT_MODE_COMPAT;
2240 p->ops->compat_write_data = parport_pc_compat_write_block_pio;
2241 #ifdef CONFIG_PARPORT_1284
2242 p->ops->ecp_write_data = parport_pc_ecp_write_block_pio;
2243 /* currently broken, but working on it.. (FB) */
2244 /* p->ops->ecp_read_data = parport_pc_ecp_read_block_pio; */
2245 #endif /* IEEE 1284 support */
2246 if (p->dma != PARPORT_DMA_NONE) {
2247 printk(", dma %d", p->dma);
2248 p->modes |= PARPORT_MODE_DMA;
2250 else printk(", using FIFO");
2253 /* We can't use the DMA channel after all. */
2254 p->dma = PARPORT_DMA_NONE;
2255 #endif /* Allowed to use FIFO/DMA */
2258 #define printmode(x) {if(p->modes&PARPORT_MODE_##x){printk("%s%s",f?",":"",#x);f++;}}
2262 printmode(TRISTATE);
2269 #ifndef CONFIG_PARPORT_1284
2271 #endif /* CONFIG_PARPORT_1284 */
2273 if (probedirq != PARPORT_IRQ_NONE)
2274 printk(KERN_INFO "%s: irq %d detected\n", p->name, probedirq);
2276 /* If No ECP release the ports grabbed above. */
2277 if (ECR_res && (p->modes & PARPORT_MODE_ECP) == 0) {
2278 release_region(base_hi, 3);
2281 /* Likewise for EEP ports */
2282 if (EPP_res && (p->modes & PARPORT_MODE_EPP) == 0) {
2283 release_region(base+3, 5);
2286 if (p->irq != PARPORT_IRQ_NONE) {
2287 if (request_irq (p->irq, parport_pc_interrupt,
2289 printk (KERN_WARNING "%s: irq %d in use, "
2290 "resorting to polled operation\n",
2292 p->irq = PARPORT_IRQ_NONE;
2293 p->dma = PARPORT_DMA_NONE;
2296 #ifdef CONFIG_PARPORT_PC_FIFO
2298 if (p->dma != PARPORT_DMA_NONE) {
2299 if (request_dma (p->dma, p->name)) {
2300 printk (KERN_WARNING "%s: dma %d in use, "
2301 "resorting to PIO operation\n",
2303 p->dma = PARPORT_DMA_NONE;
2306 pci_alloc_consistent(priv->dev,
2309 if (! priv->dma_buf) {
2310 printk (KERN_WARNING "%s: "
2311 "cannot get buffer for DMA, "
2312 "resorting to PIO operation\n",
2315 p->dma = PARPORT_DMA_NONE;
2323 /* Done probing. Now put the port into a sensible start-up state. */
2326 * Put the ECP detected port in PS2 mode.
2327 * Do this also for ports that have ECR but don't do ECP.
2329 ECR_WRITE (p, 0x34);
2331 parport_pc_write_data(p, 0);
2332 parport_pc_data_forward (p);
2334 /* Now that we've told the sharing engine about the port, and
2335 found out its characteristics, let the high-level drivers
2337 spin_lock(&ports_lock);
2338 list_add(&priv->list, &ports_list);
2339 spin_unlock(&ports_lock);
2340 parport_announce_port (p);
2346 release_region(base_hi, 3);
2348 release_region(base+0x3, 5);
2349 release_region(base, 3);
2351 parport_put_port(p);
2360 EXPORT_SYMBOL (parport_pc_probe_port);
2362 void parport_pc_unregister_port (struct parport *p)
2364 struct parport_pc_private *priv = p->private_data;
2365 struct parport_operations *ops = p->ops;
2367 parport_remove_port(p);
2368 spin_lock(&ports_lock);
2369 list_del_init(&priv->list);
2370 spin_unlock(&ports_lock);
2371 if (p->dma != PARPORT_DMA_NONE)
2373 if (p->irq != PARPORT_IRQ_NONE)
2374 free_irq(p->irq, p);
2375 release_region(p->base, 3);
2377 release_region(p->base + 3, p->size - 3);
2378 if (p->modes & PARPORT_MODE_ECP)
2379 release_region(p->base_hi, 3);
2380 #ifdef CONFIG_PARPORT_PC_FIFO
2383 pci_free_consistent(priv->dev, PAGE_SIZE,
2388 kfree (p->private_data);
2389 parport_put_port(p);
2390 kfree (ops); /* hope no-one cached it */
2393 EXPORT_SYMBOL (parport_pc_unregister_port);
2397 /* ITE support maintained by Rich Liu <richliu@poorman.org> */
2398 static int __devinit sio_ite_8872_probe (struct pci_dev *pdev, int autoirq,
2399 int autodma, struct parport_pc_via_data *via)
2401 short inta_addr[6] = { 0x2A0, 0x2C0, 0x220, 0x240, 0x1E0 };
2402 struct resource *base_res;
2404 u32 ite8872_lpt, ite8872_lpthi;
2405 u8 ite8872_irq, type;
2406 char *fake_name = "parport probe";
2410 DPRINTK (KERN_DEBUG "sio_ite_8872_probe()\n");
2412 // make sure which one chip
2413 for(i = 0; i < 5; i++) {
2414 base_res = request_region(inta_addr[i], 0x8, fake_name);
2417 pci_write_config_dword (pdev, 0x60,
2418 0xe7000000 | inta_addr[i]);
2419 pci_write_config_dword (pdev, 0x78,
2420 0x00000000 | inta_addr[i]);
2421 test = inb (inta_addr[i]);
2422 if (test != 0xff) break;
2423 release_region(inta_addr[i], 0x8);
2427 printk (KERN_INFO "parport_pc: cannot find ITE8872 INTA\n");
2431 type = inb (inta_addr[i] + 0x18);
2436 printk (KERN_INFO "parport_pc: ITE8871 found (1P)\n");
2437 ite8872set = 0x64200000;
2440 printk (KERN_INFO "parport_pc: ITE8875 found (1P)\n");
2441 ite8872set = 0x64200000;
2444 printk (KERN_INFO "parport_pc: ITE8872 found (2S1P)\n");
2445 ite8872set = 0x64e00000;
2448 printk (KERN_INFO "parport_pc: ITE8873 found (1S)\n");
2451 DPRINTK (KERN_DEBUG "parport_pc: ITE8874 found (2S)\n");
2454 printk (KERN_INFO "parport_pc: unknown ITE887x\n");
2455 printk (KERN_INFO "parport_pc: please mail 'lspci -nvv' "
2456 "output to Rich.Liu@ite.com.tw\n");
2460 pci_read_config_byte (pdev, 0x3c, &ite8872_irq);
2461 pci_read_config_dword (pdev, 0x1c, &ite8872_lpt);
2462 ite8872_lpt &= 0x0000ff00;
2463 pci_read_config_dword (pdev, 0x20, &ite8872_lpthi);
2464 ite8872_lpthi &= 0x0000ff00;
2465 pci_write_config_dword (pdev, 0x6c, 0xe3000000 | ite8872_lpt);
2466 pci_write_config_dword (pdev, 0x70, 0xe3000000 | ite8872_lpthi);
2467 pci_write_config_dword (pdev, 0x80, (ite8872_lpthi<<16) | ite8872_lpt);
2468 // SET SPP&EPP , Parallel Port NO DMA , Enable All Function
2470 pci_write_config_dword (pdev, 0x9c,
2471 ite8872set | (ite8872_irq * 0x11111));
2473 DPRINTK (KERN_DEBUG "ITE887x: The IRQ is %d.\n", ite8872_irq);
2474 DPRINTK (KERN_DEBUG "ITE887x: The PARALLEL I/O port is 0x%x.\n",
2476 DPRINTK (KERN_DEBUG "ITE887x: The PARALLEL I/O porthi is 0x%x.\n",
2479 /* Let the user (or defaults) steer us away from interrupts */
2481 if (autoirq != PARPORT_IRQ_AUTO)
2482 irq = PARPORT_IRQ_NONE;
2485 * Release the resource so that parport_pc_probe_port can get it.
2487 release_resource(base_res);
2488 if (parport_pc_probe_port (ite8872_lpt, ite8872_lpthi,
2489 irq, PARPORT_DMA_NONE, NULL)) {
2491 "parport_pc: ITE 8872 parallel port: io=0x%X",
2493 if (irq != PARPORT_IRQ_NONE)
2494 printk (", irq=%d", irq);
2502 /* VIA 8231 support by Pavel Fedin <sonic_amiga@rambler.ru>
2503 based on VIA 686a support code by Jeff Garzik <jgarzik@pobox.com> */
2504 static int __devinitdata parport_init_mode = 0;
2506 /* Data for two known VIA chips */
2507 static struct parport_pc_via_data via_686a_data __devinitdata = {
2516 static struct parport_pc_via_data via_8231_data __devinitdata = {
2526 static int __devinit sio_via_probe (struct pci_dev *pdev, int autoirq,
2527 int autodma, struct parport_pc_via_data *via)
2529 u8 tmp, tmp2, siofunc;
2532 unsigned port1, port2;
2533 unsigned have_epp = 0;
2535 printk(KERN_DEBUG "parport_pc: VIA 686A/8231 detected\n");
2537 switch(parport_init_mode)
2540 printk(KERN_DEBUG "parport_pc: setting SPP mode\n");
2541 siofunc = VIA_FUNCTION_PARPORT_SPP;
2544 printk(KERN_DEBUG "parport_pc: setting PS/2 mode\n");
2545 siofunc = VIA_FUNCTION_PARPORT_SPP;
2546 ppcontrol = VIA_PARPORT_BIDIR;
2549 printk(KERN_DEBUG "parport_pc: setting EPP mode\n");
2550 siofunc = VIA_FUNCTION_PARPORT_EPP;
2551 ppcontrol = VIA_PARPORT_BIDIR;
2555 printk(KERN_DEBUG "parport_pc: setting ECP mode\n");
2556 siofunc = VIA_FUNCTION_PARPORT_ECP;
2557 ppcontrol = VIA_PARPORT_BIDIR;
2560 printk(KERN_DEBUG "parport_pc: setting EPP+ECP mode\n");
2561 siofunc = VIA_FUNCTION_PARPORT_ECP;
2562 ppcontrol = VIA_PARPORT_BIDIR|VIA_PARPORT_ECPEPP;
2566 printk(KERN_DEBUG "parport_pc: probing current configuration\n");
2567 siofunc = VIA_FUNCTION_PROBE;
2571 * unlock super i/o configuration
2573 pci_read_config_byte(pdev, via->via_pci_superio_config_reg, &tmp);
2574 tmp |= via->via_pci_superio_config_data;
2575 pci_write_config_byte(pdev, via->via_pci_superio_config_reg, tmp);
2577 /* Bits 1-0: Parallel Port Mode / Enable */
2578 outb(via->viacfg_function, VIA_CONFIG_INDEX);
2579 tmp = inb (VIA_CONFIG_DATA);
2580 /* Bit 5: EPP+ECP enable; bit 7: PS/2 bidirectional port enable */
2581 outb(via->viacfg_parport_control, VIA_CONFIG_INDEX);
2582 tmp2 = inb (VIA_CONFIG_DATA);
2583 if (siofunc == VIA_FUNCTION_PROBE)
2585 siofunc = tmp & VIA_FUNCTION_PARPORT_DISABLE;
2590 tmp &= ~VIA_FUNCTION_PARPORT_DISABLE;
2592 outb(via->viacfg_function, VIA_CONFIG_INDEX);
2593 outb(tmp, VIA_CONFIG_DATA);
2594 tmp2 &= ~(VIA_PARPORT_BIDIR|VIA_PARPORT_ECPEPP);
2596 outb(via->viacfg_parport_control, VIA_CONFIG_INDEX);
2597 outb(tmp2, VIA_CONFIG_DATA);
2600 /* Parallel Port I/O Base Address, bits 9-2 */
2601 outb(via->viacfg_parport_base, VIA_CONFIG_INDEX);
2602 port1 = inb(VIA_CONFIG_DATA) << 2;
2604 printk (KERN_DEBUG "parport_pc: Current parallel port base: 0x%X\n",port1);
2605 if ((port1 == 0x3BC) && have_epp)
2607 outb(via->viacfg_parport_base, VIA_CONFIG_INDEX);
2608 outb((0x378 >> 2), VIA_CONFIG_DATA);
2609 printk(KERN_DEBUG "parport_pc: Parallel port base changed to 0x378\n");
2614 * lock super i/o configuration
2616 pci_read_config_byte(pdev, via->via_pci_superio_config_reg, &tmp);
2617 tmp &= ~via->via_pci_superio_config_data;
2618 pci_write_config_byte(pdev, via->via_pci_superio_config_reg, tmp);
2620 if (siofunc == VIA_FUNCTION_PARPORT_DISABLE) {
2621 printk(KERN_INFO "parport_pc: VIA parallel port disabled in BIOS\n");
2625 /* Bits 7-4: PnP Routing for Parallel Port IRQ */
2626 pci_read_config_byte(pdev, via->via_pci_parport_irq_reg, &tmp);
2627 irq = ((tmp & VIA_IRQCONTROL_PARALLEL) >> 4);
2629 if (siofunc == VIA_FUNCTION_PARPORT_ECP)
2631 /* Bits 3-2: PnP Routing for Parallel Port DMA */
2632 pci_read_config_byte(pdev, via->via_pci_parport_dma_reg, &tmp);
2633 dma = ((tmp & VIA_DMACONTROL_PARALLEL) >> 2);
2636 /* if ECP not enabled, DMA is not enabled, assumed bogus 'dma' value */
2637 dma = PARPORT_DMA_NONE;
2639 /* Let the user (or defaults) steer us away from interrupts and DMA */
2640 if (autoirq == PARPORT_IRQ_NONE) {
2641 irq = PARPORT_IRQ_NONE;
2642 dma = PARPORT_DMA_NONE;
2644 if (autodma == PARPORT_DMA_NONE)
2645 dma = PARPORT_DMA_NONE;
2648 case 0x3bc: port2 = 0x7bc; break;
2649 case 0x378: port2 = 0x778; break;
2650 case 0x278: port2 = 0x678; break;
2652 printk(KERN_INFO "parport_pc: Weird VIA parport base 0x%X, ignoring\n",
2657 /* filter bogus IRQs */
2663 irq = PARPORT_IRQ_NONE;
2666 default: /* do nothing */
2670 /* finally, do the probe with values obtained */
2671 if (parport_pc_probe_port (port1, port2, irq, dma, NULL)) {
2673 "parport_pc: VIA parallel port: io=0x%X", port1);
2674 if (irq != PARPORT_IRQ_NONE)
2675 printk (", irq=%d", irq);
2676 if (dma != PARPORT_DMA_NONE)
2677 printk (", dma=%d", dma);
2682 printk(KERN_WARNING "parport_pc: Strange, can't probe VIA parallel port: io=0x%X, irq=%d, dma=%d\n",
2688 enum parport_pc_sio_types {
2689 sio_via_686a = 0, /* Via VT82C686A motherboard Super I/O */
2690 sio_via_8231, /* Via VT8231 south bridge integrated Super IO */
2695 /* each element directly indexed from enum list, above */
2696 static struct parport_pc_superio {
2697 int (*probe) (struct pci_dev *pdev, int autoirq, int autodma, struct parport_pc_via_data *via);
2698 struct parport_pc_via_data *via;
2699 } parport_pc_superio_info[] __devinitdata = {
2700 { sio_via_probe, &via_686a_data, },
2701 { sio_via_probe, &via_8231_data, },
2702 { sio_ite_8872_probe, NULL, },
2705 enum parport_pc_pci_cards {
2706 siig_1p_10x = last_sio,
2711 lava_parallel_dual_a,
2712 lava_parallel_dual_b,
2757 /* each element directly indexed from enum list, above
2758 * (but offset by last_sio) */
2759 static struct parport_pc_pci {
2761 struct { /* BAR (base address registers) numbers in the config
2764 int hi; /* -1 if not there, >6 for offset-method (max
2768 /* If set, this is called immediately after pci_enable_device.
2769 * If it returns non-zero, no probing will take place and the
2770 * ports will not be used. */
2771 int (*preinit_hook) (struct pci_dev *pdev, int autoirq, int autodma);
2773 /* If set, this is called after probing for ports. If 'failed'
2774 * is non-zero we couldn't use any of the ports. */
2775 void (*postinit_hook) (struct pci_dev *pdev, int failed);
2776 } cards[] __devinitdata = {
2777 /* siig_1p_10x */ { 1, { { 2, 3 }, } },
2778 /* siig_2p_10x */ { 2, { { 2, 3 }, { 4, 5 }, } },
2779 /* siig_1p_20x */ { 1, { { 0, 1 }, } },
2780 /* siig_2p_20x */ { 2, { { 0, 1 }, { 2, 3 }, } },
2781 /* lava_parallel */ { 1, { { 0, -1 }, } },
2782 /* lava_parallel_dual_a */ { 1, { { 0, -1 }, } },
2783 /* lava_parallel_dual_b */ { 1, { { 0, -1 }, } },
2784 /* boca_ioppar */ { 1, { { 0, -1 }, } },
2785 /* plx_9050 */ { 2, { { 4, -1 }, { 5, -1 }, } },
2786 /* timedia_4078a */ { 1, { { 2, -1 }, } },
2787 /* timedia_4079h */ { 1, { { 2, 3 }, } },
2788 /* timedia_4085h */ { 2, { { 2, -1 }, { 4, -1 }, } },
2789 /* timedia_4088a */ { 2, { { 2, 3 }, { 4, 5 }, } },
2790 /* timedia_4089a */ { 2, { { 2, 3 }, { 4, 5 }, } },
2791 /* timedia_4095a */ { 2, { { 2, 3 }, { 4, 5 }, } },
2792 /* timedia_4096a */ { 2, { { 2, 3 }, { 4, 5 }, } },
2793 /* timedia_4078u */ { 1, { { 2, -1 }, } },
2794 /* timedia_4079a */ { 1, { { 2, 3 }, } },
2795 /* timedia_4085u */ { 2, { { 2, -1 }, { 4, -1 }, } },
2796 /* timedia_4079r */ { 1, { { 2, 3 }, } },
2797 /* timedia_4079s */ { 1, { { 2, 3 }, } },
2798 /* timedia_4079d */ { 1, { { 2, 3 }, } },
2799 /* timedia_4079e */ { 1, { { 2, 3 }, } },
2800 /* timedia_4079f */ { 1, { { 2, 3 }, } },
2801 /* timedia_9079a */ { 1, { { 2, 3 }, } },
2802 /* timedia_9079b */ { 1, { { 2, 3 }, } },
2803 /* timedia_9079c */ { 1, { { 2, 3 }, } },
2804 /* timedia_4006a */ { 1, { { 0, -1 }, } },
2805 /* timedia_4014 */ { 2, { { 0, -1 }, { 2, -1 }, } },
2806 /* timedia_4008a */ { 1, { { 0, 1 }, } },
2807 /* timedia_4018 */ { 2, { { 0, 1 }, { 2, 3 }, } },
2808 /* timedia_9018a */ { 2, { { 0, 1 }, { 2, 3 }, } },
2809 /* SYBA uses fixed offsets in
2811 /* syba_2p_epp AP138B */ { 2, { { 0, 0x078 }, { 0, 0x178 }, } },
2812 /* syba_1p_ecp W83787 */ { 1, { { 0, 0x078 }, } },
2813 /* titan_010l */ { 1, { { 3, -1 }, } },
2814 /* titan_1284p1 */ { 1, { { 0, 1 }, } },
2815 /* titan_1284p2 */ { 2, { { 0, 1 }, { 2, 3 }, } },
2816 /* avlab_1p */ { 1, { { 0, 1}, } },
2817 /* avlab_2p */ { 2, { { 0, 1}, { 2, 3 },} },
2818 /* The Oxford Semi cards are unusual: 954 doesn't support ECP,
2819 * and 840 locks up if you write 1 to bit 2! */
2820 /* oxsemi_954 */ { 1, { { 0, -1 }, } },
2821 /* oxsemi_840 */ { 1, { { 0, -1 }, } },
2822 /* aks_0100 */ { 1, { { 0, -1 }, } },
2823 /* mobility_pp */ { 1, { { 0, 1 }, } },
2824 /* netmos_9705 */ { 1, { { 0, -1 }, } }, /* untested */
2825 /* netmos_9715 */ { 2, { { 0, 1 }, { 2, 3 },} }, /* untested */
2826 /* netmos_9755 */ { 2, { { 0, 1 }, { 2, 3 },} }, /* untested */
2827 /* netmos_9805 */ { 1, { { 0, -1 }, } }, /* untested */
2828 /* netmos_9815 */ { 2, { { 0, -1 }, { 2, -1 }, } }, /* untested */
2831 static struct pci_device_id parport_pc_pci_tbl[] = {
2832 /* Super-IO onboard chips */
2833 { 0x1106, 0x0686, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_via_686a },
2834 { 0x1106, 0x8231, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_via_8231 },
2835 { PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8872,
2836 PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_ite_8872 },
2839 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1P_10x,
2840 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1p_10x },
2841 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P_10x,
2842 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p_10x },
2843 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1P_20x,
2844 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1p_20x },
2845 { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P_20x,
2846 PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p_20x },
2847 { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_PARALLEL,
2848 PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel },
2849 { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_DUAL_PAR_A,
2850 PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel_dual_a },
2851 { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_DUAL_PAR_B,
2852 PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel_dual_b },
2853 { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_BOCA_IOPPAR,
2854 PCI_ANY_ID, PCI_ANY_ID, 0, 0, boca_ioppar },
2855 { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
2856 PCI_SUBVENDOR_ID_EXSYS, PCI_SUBDEVICE_ID_EXSYS_4014, 0,0, plx_9050 },
2857 /* PCI_VENDOR_ID_TIMEDIA/SUNIX has many differing cards ...*/
2858 { 0x1409, 0x7168, 0x1409, 0x4078, 0, 0, timedia_4078a },
2859 { 0x1409, 0x7168, 0x1409, 0x4079, 0, 0, timedia_4079h },
2860 { 0x1409, 0x7168, 0x1409, 0x4085, 0, 0, timedia_4085h },
2861 { 0x1409, 0x7168, 0x1409, 0x4088, 0, 0, timedia_4088a },
2862 { 0x1409, 0x7168, 0x1409, 0x4089, 0, 0, timedia_4089a },
2863 { 0x1409, 0x7168, 0x1409, 0x4095, 0, 0, timedia_4095a },
2864 { 0x1409, 0x7168, 0x1409, 0x4096, 0, 0, timedia_4096a },
2865 { 0x1409, 0x7168, 0x1409, 0x5078, 0, 0, timedia_4078u },
2866 { 0x1409, 0x7168, 0x1409, 0x5079, 0, 0, timedia_4079a },
2867 { 0x1409, 0x7168, 0x1409, 0x5085, 0, 0, timedia_4085u },
2868 { 0x1409, 0x7168, 0x1409, 0x6079, 0, 0, timedia_4079r },
2869 { 0x1409, 0x7168, 0x1409, 0x7079, 0, 0, timedia_4079s },
2870 { 0x1409, 0x7168, 0x1409, 0x8079, 0, 0, timedia_4079d },
2871 { 0x1409, 0x7168, 0x1409, 0x9079, 0, 0, timedia_4079e },
2872 { 0x1409, 0x7168, 0x1409, 0xa079, 0, 0, timedia_4079f },
2873 { 0x1409, 0x7168, 0x1409, 0xb079, 0, 0, timedia_9079a },
2874 { 0x1409, 0x7168, 0x1409, 0xc079, 0, 0, timedia_9079b },
2875 { 0x1409, 0x7168, 0x1409, 0xd079, 0, 0, timedia_9079c },
2876 { 0x1409, 0x7268, 0x1409, 0x0101, 0, 0, timedia_4006a },
2877 { 0x1409, 0x7268, 0x1409, 0x0102, 0, 0, timedia_4014 },
2878 { 0x1409, 0x7268, 0x1409, 0x0103, 0, 0, timedia_4008a },
2879 { 0x1409, 0x7268, 0x1409, 0x0104, 0, 0, timedia_4018 },
2880 { 0x1409, 0x7268, 0x1409, 0x9018, 0, 0, timedia_9018a },
2881 { 0x14f2, 0x0121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, mobility_pp },
2882 { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_2P_EPP,
2883 PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_2p_epp },
2884 { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_1P_ECP,
2885 PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_1p_ecp },
2886 { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_010L,
2887 PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_010l },
2888 { 0x9710, 0x9805, 0x1000, 0x0010, 0, 0, titan_1284p1 },
2889 { 0x9710, 0x9815, 0x1000, 0x0020, 0, 0, titan_1284p2 },
2890 /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
2891 { 0x14db, 0x2120, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1p}, /* AFAVLAB_TK9902 */
2892 { 0x14db, 0x2121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2p},
2893 { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954PP,
2894 PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_954 },
2895 { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_12PCI840,
2896 PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_840 },
2897 { PCI_VENDOR_ID_AKS, PCI_DEVICE_ID_AKS_ALADDINCARD,
2898 PCI_ANY_ID, PCI_ANY_ID, 0, 0, aks_0100 },
2899 /* NetMos communication controllers */
2900 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9705,
2901 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9705 },
2902 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9715,
2903 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9715 },
2904 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9755,
2905 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9755 },
2906 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9805,
2907 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9805 },
2908 { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9815,
2909 PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9815 },
2910 { 0, } /* terminate list */
2912 MODULE_DEVICE_TABLE(pci,parport_pc_pci_tbl);
2914 struct pci_parport_data {
2916 struct parport *ports[2];
2919 static int parport_pc_pci_probe (struct pci_dev *dev,
2920 const struct pci_device_id *id)
2922 int err, count, n, i = id->driver_data;
2923 struct pci_parport_data *data;
2926 /* This is an onboard Super-IO and has already been probed */
2929 /* This is a PCI card */
2932 if ((err = pci_enable_device (dev)) != 0)
2935 data = kmalloc(sizeof(struct pci_parport_data), GFP_KERNEL);
2939 if (cards[i].preinit_hook &&
2940 cards[i].preinit_hook (dev, PARPORT_IRQ_NONE, PARPORT_DMA_NONE)) {
2945 for (n = 0; n < cards[i].numports; n++) {
2946 int lo = cards[i].addr[n].lo;
2947 int hi = cards[i].addr[n].hi;
2948 unsigned long io_lo, io_hi;
2949 io_lo = pci_resource_start (dev, lo);
2951 if ((hi >= 0) && (hi <= 6))
2952 io_hi = pci_resource_start (dev, hi);
2954 io_lo += hi; /* Reinterpret the meaning of
2955 "hi" as an offset (see SYBA
2957 /* TODO: test if sharing interrupts works */
2958 printk (KERN_DEBUG "PCI parallel port detected: %04x:%04x, "
2959 "I/O at %#lx(%#lx)\n",
2960 parport_pc_pci_tbl[i + last_sio].vendor,
2961 parport_pc_pci_tbl[i + last_sio].device, io_lo, io_hi);
2962 data->ports[count] =
2963 parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
2964 PARPORT_DMA_NONE, dev);
2965 if (data->ports[count])
2971 if (cards[i].postinit_hook)
2972 cards[i].postinit_hook (dev, count == 0);
2975 pci_set_drvdata(dev, data);
2984 static void __devexit parport_pc_pci_remove(struct pci_dev *dev)
2986 struct pci_parport_data *data = pci_get_drvdata(dev);
2989 pci_set_drvdata(dev, NULL);
2992 for (i = data->num - 1; i >= 0; i--)
2993 parport_pc_unregister_port(data->ports[i]);
2999 static struct pci_driver parport_pc_pci_driver = {
3000 .name = "parport_pc",
3001 .id_table = parport_pc_pci_tbl,
3002 .probe = parport_pc_pci_probe,
3003 .remove = __devexit_p(parport_pc_pci_remove),
3006 static int __init parport_pc_init_superio (int autoirq, int autodma)
3008 const struct pci_device_id *id;
3009 struct pci_dev *pdev = NULL;
3012 for_each_pci_dev(pdev) {
3013 id = pci_match_id(parport_pc_pci_tbl, pdev);
3014 if (id == NULL || id->driver_data >= last_sio)
3017 if (parport_pc_superio_info[id->driver_data].probe
3018 (pdev, autoirq, autodma,parport_pc_superio_info[id->driver_data].via)) {
3023 return ret; /* number of devices found */
3026 static struct pci_driver parport_pc_pci_driver;
3027 static int __init parport_pc_init_superio(int autoirq, int autodma) {return 0;}
3028 #endif /* CONFIG_PCI */
3031 static const struct pnp_device_id parport_pc_pnp_tbl[] = {
3032 /* Standard LPT Printer Port */
3033 {.id = "PNP0400", .driver_data = 0},
3034 /* ECP Printer Port */
3035 {.id = "PNP0401", .driver_data = 0},
3039 MODULE_DEVICE_TABLE(pnp,parport_pc_pnp_tbl);
3041 static int parport_pc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id)
3043 struct parport *pdata;
3044 unsigned long io_lo, io_hi;
3047 if (pnp_port_valid(dev,0) &&
3048 !(pnp_port_flags(dev,0) & IORESOURCE_DISABLED)) {
3049 io_lo = pnp_port_start(dev,0);
3053 if (pnp_port_valid(dev,1) &&
3054 !(pnp_port_flags(dev,1) & IORESOURCE_DISABLED)) {
3055 io_hi = pnp_port_start(dev,1);
3059 if (pnp_irq_valid(dev,0) &&
3060 !(pnp_irq_flags(dev,0) & IORESOURCE_DISABLED)) {
3061 irq = pnp_irq(dev,0);
3063 irq = PARPORT_IRQ_NONE;
3065 if (pnp_dma_valid(dev,0) &&
3066 !(pnp_dma_flags(dev,0) & IORESOURCE_DISABLED)) {
3067 dma = pnp_dma(dev,0);
3069 dma = PARPORT_DMA_NONE;
3071 printk(KERN_INFO "parport: PnPBIOS parport detected.\n");
3072 if (!(pdata = parport_pc_probe_port (io_lo, io_hi, irq, dma, NULL)))
3075 pnp_set_drvdata(dev,pdata);
3079 static void parport_pc_pnp_remove(struct pnp_dev *dev)
3081 struct parport *pdata = (struct parport *)pnp_get_drvdata(dev);
3085 parport_pc_unregister_port(pdata);
3088 /* we only need the pnp layer to activate the device, at least for now */
3089 static struct pnp_driver parport_pc_pnp_driver = {
3090 .name = "parport_pc",
3091 .id_table = parport_pc_pnp_tbl,
3092 .probe = parport_pc_pnp_probe,
3093 .remove = parport_pc_pnp_remove,
3097 /* This is called by parport_pc_find_nonpci_ports (in asm/parport.h) */
3098 static int __devinit __attribute__((unused))
3099 parport_pc_find_isa_ports (int autoirq, int autodma)
3103 if (parport_pc_probe_port(0x3bc, 0x7bc, autoirq, autodma, NULL))
3105 if (parport_pc_probe_port(0x378, 0x778, autoirq, autodma, NULL))
3107 if (parport_pc_probe_port(0x278, 0x678, autoirq, autodma, NULL))
3113 /* This function is called by parport_pc_init if the user didn't
3114 * specify any ports to probe. Its job is to find some ports. Order
3115 * is important here -- we want ISA ports to be registered first,
3116 * followed by PCI cards (for least surprise), but before that we want
3117 * to do chipset-specific tests for some onboard ports that we know
3120 * autoirq is PARPORT_IRQ_NONE, PARPORT_IRQ_AUTO, or PARPORT_IRQ_PROBEONLY
3121 * autodma is PARPORT_DMA_NONE or PARPORT_DMA_AUTO
3123 static int __init parport_pc_find_ports (int autoirq, int autodma)
3127 #ifdef CONFIG_PARPORT_PC_SUPERIO
3128 detect_and_report_winbond ();
3129 detect_and_report_smsc ();
3132 /* Onboard SuperIO chipsets that show themselves on the PCI bus. */
3133 count += parport_pc_init_superio (autoirq, autodma);
3135 /* PnP ports, skip detection if SuperIO already found them */
3137 r = pnp_register_driver (&parport_pc_pnp_driver);
3139 pnp_registered_parport = 1;
3144 /* ISA ports and whatever (see asm/parport.h). */
3145 count += parport_pc_find_nonpci_ports (autoirq, autodma);
3147 r = pci_register_driver (&parport_pc_pci_driver);
3150 pci_registered_parport = 1;
3157 * Piles of crap below pretend to be a parser for module and kernel
3158 * parameters. Say "thank you" to whoever had come up with that
3159 * syntax and keep in mind that code below is a cleaned up version.
3162 static int __initdata io[PARPORT_PC_MAX_PORTS+1] = { [0 ... PARPORT_PC_MAX_PORTS] = 0 };
3163 static int __initdata io_hi[PARPORT_PC_MAX_PORTS+1] =
3164 { [0 ... PARPORT_PC_MAX_PORTS] = PARPORT_IOHI_AUTO };
3165 static int __initdata dmaval[PARPORT_PC_MAX_PORTS] = { [0 ... PARPORT_PC_MAX_PORTS-1] = PARPORT_DMA_NONE };
3166 static int __initdata irqval[PARPORT_PC_MAX_PORTS] = { [0 ... PARPORT_PC_MAX_PORTS-1] = PARPORT_IRQ_PROBEONLY };
3168 static int __init parport_parse_param(const char *s, int *val,
3169 int automatic, int none, int nofifo)
3173 if (!strncmp(s, "auto", 4))
3175 else if (!strncmp(s, "none", 4))
3177 else if (nofifo && !strncmp(s, "nofifo", 4))
3181 unsigned long r = simple_strtoul(s, &ep, 0);
3185 printk(KERN_ERR "parport: bad specifier `%s'\n", s);
3192 static int __init parport_parse_irq(const char *irqstr, int *val)
3194 return parport_parse_param(irqstr, val, PARPORT_IRQ_AUTO,
3195 PARPORT_IRQ_NONE, 0);
3198 static int __init parport_parse_dma(const char *dmastr, int *val)
3200 return parport_parse_param(dmastr, val, PARPORT_DMA_AUTO,
3201 PARPORT_DMA_NONE, PARPORT_DMA_NOFIFO);
3205 static int __init parport_init_mode_setup(char *str)
3207 printk(KERN_DEBUG "parport_pc.c: Specified parameter parport_init_mode=%s\n", str);
3209 if (!strcmp (str, "spp"))
3210 parport_init_mode=1;
3211 if (!strcmp (str, "ps2"))
3212 parport_init_mode=2;
3213 if (!strcmp (str, "epp"))
3214 parport_init_mode=3;
3215 if (!strcmp (str, "ecp"))
3216 parport_init_mode=4;
3217 if (!strcmp (str, "ecpepp"))
3218 parport_init_mode=5;
3224 static const char *irq[PARPORT_PC_MAX_PORTS];
3225 static const char *dma[PARPORT_PC_MAX_PORTS];
3227 MODULE_PARM_DESC(io, "Base I/O address (SPP regs)");
3228 module_param_array(io, int, NULL, 0);
3229 MODULE_PARM_DESC(io_hi, "Base I/O address (ECR)");
3230 module_param_array(io_hi, int, NULL, 0);
3231 MODULE_PARM_DESC(irq, "IRQ line");
3232 module_param_array(irq, charp, NULL, 0);
3233 MODULE_PARM_DESC(dma, "DMA channel");
3234 module_param_array(dma, charp, NULL, 0);
3235 #if defined(CONFIG_PARPORT_PC_SUPERIO) || \
3236 (defined(CONFIG_PARPORT_1284) && defined(CONFIG_PARPORT_PC_FIFO))
3237 MODULE_PARM_DESC(verbose_probing, "Log chit-chat during initialisation");
3238 module_param(verbose_probing, int, 0644);
3241 static char *init_mode;
3242 MODULE_PARM_DESC(init_mode, "Initialise mode for VIA VT8231 port (spp, ps2, epp, ecp or ecpepp)");
3243 module_param(init_mode, charp, 0);
3246 static int __init parse_parport_params(void)
3253 parport_init_mode_setup(init_mode);
3256 for (i = 0; i < PARPORT_PC_MAX_PORTS && io[i]; i++) {
3257 if (parport_parse_irq(irq[i], &val))
3260 if (parport_parse_dma(dma[i], &val))
3265 /* The user can make us use any IRQs or DMAs we find. */
3266 if (irq[0] && !parport_parse_irq(irq[0], &val))
3268 case PARPORT_IRQ_NONE:
3269 case PARPORT_IRQ_AUTO:
3273 printk (KERN_WARNING
3274 "parport_pc: irq specified "
3275 "without base address. Use 'io=' "
3276 "to specify one\n");
3279 if (dma[0] && !parport_parse_dma(dma[0], &val))
3281 case PARPORT_DMA_NONE:
3282 case PARPORT_DMA_AUTO:
3286 printk (KERN_WARNING
3287 "parport_pc: dma specified "
3288 "without base address. Use 'io=' "
3289 "to specify one\n");
3297 static int parport_setup_ptr __initdata = 0;
3300 * Acceptable parameters:
3304 * parport=0xBASE[,IRQ[,DMA]]
3306 * IRQ/DMA may be numeric or 'auto' or 'none'
3308 static int __init parport_setup (char *str)
3314 if (!str || !*str || (*str == '0' && !*(str+1))) {
3315 /* Disable parport if "parport=0" in cmdline */
3316 io[0] = PARPORT_DISABLE;
3320 if (!strncmp (str, "auto", 4)) {
3321 irqval[0] = PARPORT_IRQ_AUTO;
3322 dmaval[0] = PARPORT_DMA_AUTO;
3326 val = simple_strtoul (str, &endptr, 0);
3327 if (endptr == str) {
3328 printk (KERN_WARNING "parport=%s not understood\n", str);
3332 if (parport_setup_ptr == PARPORT_PC_MAX_PORTS) {
3333 printk(KERN_ERR "parport=%s ignored, too many ports\n", str);
3337 io[parport_setup_ptr] = val;
3338 irqval[parport_setup_ptr] = PARPORT_IRQ_NONE;
3339 dmaval[parport_setup_ptr] = PARPORT_DMA_NONE;
3341 sep = strchr(str, ',');
3343 if (parport_parse_irq(sep, &val))
3345 irqval[parport_setup_ptr] = val;
3346 sep = strchr(sep, ',');
3348 if (parport_parse_dma(sep, &val))
3350 dmaval[parport_setup_ptr] = val;
3353 parport_setup_ptr++;
3357 static int __init parse_parport_params(void)
3359 return io[0] == PARPORT_DISABLE;
3362 __setup ("parport=", parport_setup);
3365 * Acceptable parameters:
3367 * parport_init_mode=[spp|ps2|epp|ecp|ecpepp]
3370 __setup("parport_init_mode=",parport_init_mode_setup);
3374 /* "Parser" ends here */
3376 static int __init parport_pc_init(void)
3380 if (parse_parport_params())
3385 /* Only probe the ports we were given. */
3387 for (i = 0; i < PARPORT_PC_MAX_PORTS; i++) {
3390 if ((io_hi[i]) == PARPORT_IOHI_AUTO)
3391 io_hi[i] = 0x400 + io[i];
3392 if (parport_pc_probe_port(io[i], io_hi[i],
3393 irqval[i], dmaval[i], NULL))
3397 count += parport_pc_find_ports (irqval[0], dmaval[0]);
3402 static void __exit parport_pc_exit(void)
3404 if (pci_registered_parport)
3405 pci_unregister_driver (&parport_pc_pci_driver);
3406 if (pnp_registered_parport)
3407 pnp_unregister_driver (&parport_pc_pnp_driver);
3409 spin_lock(&ports_lock);
3410 while (!list_empty(&ports_list)) {
3411 struct parport_pc_private *priv;
3412 struct parport *port;
3413 priv = list_entry(ports_list.next,
3414 struct parport_pc_private, list);
3416 spin_unlock(&ports_lock);
3417 parport_pc_unregister_port(port);
3418 spin_lock(&ports_lock);
3420 spin_unlock(&ports_lock);
3423 MODULE_AUTHOR("Phil Blundell, Tim Waugh, others");
3424 MODULE_DESCRIPTION("PC-style parallel port driver");
3425 MODULE_LICENSE("GPL");
3426 module_init(parport_pc_init)
3427 module_exit(parport_pc_exit)