parport_pc.c
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上传日期:2013-02-24
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文件大小:84k
- /* Low-level parallel-port routines for 8255-based PC-style hardware.
- *
- * Authors: Phil Blundell <Philip.Blundell@pobox.com>
- * Tim Waugh <tim@cyberelk.demon.co.uk>
- * Jose Renau <renau@acm.org>
- * David Campbell <campbell@torque.net>
- * Andrea Arcangeli
- *
- * based on work by Grant Guenther <grant@torque.net> and Phil Blundell.
- *
- * Cleaned up include files - Russell King <linux@arm.uk.linux.org>
- * DMA support - Bert De Jonghe <bert@sophis.be>
- * Many ECP bugs fixed. Fred Barnes & Jamie Lokier, 1999
- * More PCI support now conditional on CONFIG_PCI, 03/2001, Paul G.
- * Various hacks, Fred Barnes, 04/2001
- */
- /* This driver should work with any hardware that is broadly compatible
- * with that in the IBM PC. This applies to the majority of integrated
- * I/O chipsets that are commonly available. The expected register
- * layout is:
- *
- * base+0 data
- * base+1 status
- * base+2 control
- *
- * In addition, there are some optional registers:
- *
- * base+3 EPP address
- * base+4 EPP data
- * base+0x400 ECP config A
- * base+0x401 ECP config B
- * base+0x402 ECP control
- *
- * All registers are 8 bits wide and read/write. If your hardware differs
- * only in register addresses (eg because your registers are on 32-bit
- * word boundaries) then you can alter the constants in parport_pc.h to
- * accomodate this.
- *
- * Note that the ECP registers may not start at offset 0x400 for PCI cards,
- * but rather will start at port->base_hi.
- */
- #include <linux/config.h>
- #include <linux/module.h>
- #include <linux/init.h>
- #include <linux/sched.h>
- #include <linux/delay.h>
- #include <linux/errno.h>
- #include <linux/interrupt.h>
- #include <linux/ioport.h>
- #include <linux/kernel.h>
- #include <linux/slab.h>
- #include <linux/pci.h>
- #include <linux/sysctl.h>
- #include <asm/io.h>
- #include <asm/dma.h>
- #include <asm/uaccess.h>
- #include <linux/parport.h>
- #include <linux/parport_pc.h>
- #include <asm/parport.h>
- #define PARPORT_PC_MAX_PORTS PARPORT_MAX
- /* ECR modes */
- #define ECR_SPP 00
- #define ECR_PS2 01
- #define ECR_PPF 02
- #define ECR_ECP 03
- #define ECR_EPP 04
- #define ECR_VND 05
- #define ECR_TST 06
- #define ECR_CNF 07
- #define ECR_MODE_MASK 0xe0
- #define ECR_WRITE(p,v) frob_econtrol((p),0xff,(v))
- #undef DEBUG
- #ifdef DEBUG
- #define DPRINTK printk
- #else
- #define DPRINTK(stuff...)
- #endif
- #define NR_SUPERIOS 3
- static struct superio_struct { /* For Super-IO chips autodetection */
- int io;
- int irq;
- int dma;
- } superios[NR_SUPERIOS] __devinitdata = { {0,},};
- static int user_specified __devinitdata = 0;
- #if defined(CONFIG_PARPORT_PC_FIFO) || defined(CONFIG_PARPORT_PC_SUPERIO)
- static int verbose_probing;
- #endif
- static int registered_parport;
- /* frob_control, but for ECR */
- static void frob_econtrol (struct parport *pb, unsigned char m,
- unsigned char v)
- {
- unsigned char ectr = 0;
- if (m != 0xff)
- ectr = inb (ECONTROL (pb));
- DPRINTK (KERN_DEBUG "frob_econtrol(%02x,%02x): %02x -> %02xn",
- m, v, ectr, (ectr & ~m) ^ v);
- outb ((ectr & ~m) ^ v, ECONTROL (pb));
- }
- static void __inline__ frob_set_mode (struct parport *p, int mode)
- {
- frob_econtrol (p, ECR_MODE_MASK, mode << 5);
- }
- #ifdef CONFIG_PARPORT_PC_FIFO
- /* Safely change the mode bits in the ECR
- Returns:
- 0 : Success
- -EBUSY: Could not drain FIFO in some finite amount of time,
- mode not changed!
- */
- static int change_mode(struct parport *p, int m)
- {
- const struct parport_pc_private *priv = p->physport->private_data;
- unsigned char oecr;
- int mode;
- DPRINTK(KERN_INFO "parport change_mode ECP-ISA to mode 0x%02xn",m);
- if (!priv->ecr) {
- printk (KERN_DEBUG "change_mode: but there's no ECR!n");
- return 0;
- }
- /* Bits <7:5> contain the mode. */
- oecr = inb (ECONTROL (p));
- mode = (oecr >> 5) & 0x7;
- if (mode == m) return 0;
- if (mode >= 2 && !(priv->ctr & 0x20)) {
- /* This mode resets the FIFO, so we may
- * have to wait for it to drain first. */
- long expire = jiffies + p->physport->cad->timeout;
- int counter;
- switch (mode) {
- case ECR_PPF: /* Parallel Port FIFO mode */
- case ECR_ECP: /* ECP Parallel Port mode */
- /* Busy wait for 200us */
- for (counter = 0; counter < 40; counter++) {
- if (inb (ECONTROL (p)) & 0x01)
- break;
- if (signal_pending (current)) break;
- udelay (5);
- }
- /* Poll slowly. */
- while (!(inb (ECONTROL (p)) & 0x01)) {
- if (time_after_eq (jiffies, expire))
- /* The FIFO is stuck. */
- return -EBUSY;
- __set_current_state (TASK_INTERRUPTIBLE);
- schedule_timeout ((HZ + 99) / 100);
- if (signal_pending (current))
- break;
- }
- }
- }
- if (mode >= 2 && m >= 2) {
- /* We have to go through mode 001 */
- oecr &= ~(7 << 5);
- oecr |= ECR_PS2 << 5;
- ECR_WRITE (p, oecr);
- }
- /* Set the mode. */
- oecr &= ~(7 << 5);
- oecr |= m << 5;
- ECR_WRITE (p, oecr);
- return 0;
- }
- #ifdef CONFIG_PARPORT_1284
- /* Find FIFO lossage; FIFO is reset */
- static int get_fifo_residue (struct parport *p)
- {
- int residue;
- int cnfga;
- const struct parport_pc_private *priv = p->physport->private_data;
- /* Adjust for the contents of the FIFO. */
- for (residue = priv->fifo_depth; ; residue--) {
- if (inb (ECONTROL (p)) & 0x2)
- /* Full up. */
- break;
- outb (0, FIFO (p));
- }
- printk (KERN_DEBUG "%s: %d PWords were left in FIFOn", p->name,
- residue);
- /* Reset the FIFO. */
- frob_set_mode (p, ECR_PS2);
- /* Now change to config mode and clean up. FIXME */
- frob_set_mode (p, ECR_CNF);
- cnfga = inb (CONFIGA (p));
- printk (KERN_DEBUG "%s: cnfgA contains 0x%02xn", p->name, cnfga);
- if (!(cnfga & (1<<2))) {
- printk (KERN_DEBUG "%s: Accounting for extra byten", p->name);
- residue++;
- }
- /* Don't care about partial PWords until support is added for
- * PWord != 1 byte. */
- /* Back to PS2 mode. */
- frob_set_mode (p, ECR_PS2);
- DPRINTK (KERN_DEBUG "*** get_fifo_residue: done residue collecting (ecr = 0x%2.2x)n", inb (ECONTROL (p)));
- return residue;
- }
- #endif /* IEEE 1284 support */
- #endif /* FIFO support */
- /*
- * Clear TIMEOUT BIT in EPP MODE
- *
- * This is also used in SPP detection.
- */
- static int clear_epp_timeout(struct parport *pb)
- {
- unsigned char r;
- if (!(parport_pc_read_status(pb) & 0x01))
- return 1;
- /* To clear timeout some chips require double read */
- parport_pc_read_status(pb);
- r = parport_pc_read_status(pb);
- outb (r | 0x01, STATUS (pb)); /* Some reset by writing 1 */
- outb (r & 0xfe, STATUS (pb)); /* Others by writing 0 */
- r = parport_pc_read_status(pb);
- return !(r & 0x01);
- }
- /*
- * Access functions.
- *
- * Most of these aren't static because they may be used by the
- * parport_xxx_yyy macros. extern __inline__ versions of several
- * of these are in parport_pc.h.
- */
- static void parport_pc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
- {
- parport_generic_irq(irq, (struct parport *) dev_id, regs);
- }
- void parport_pc_write_data(struct parport *p, unsigned char d)
- {
- outb (d, DATA (p));
- }
- unsigned char parport_pc_read_data(struct parport *p)
- {
- return inb (DATA (p));
- }
- void parport_pc_write_control(struct parport *p, unsigned char d)
- {
- const unsigned char wm = (PARPORT_CONTROL_STROBE |
- PARPORT_CONTROL_AUTOFD |
- PARPORT_CONTROL_INIT |
- PARPORT_CONTROL_SELECT);
- /* Take this out when drivers have adapted to the newer interface. */
- if (d & 0x20) {
- printk (KERN_DEBUG "%s (%s): use data_reverse for this!n",
- p->name, p->cad->name);
- parport_pc_data_reverse (p);
- }
- __parport_pc_frob_control (p, wm, d & wm);
- }
- unsigned char parport_pc_read_control(struct parport *p)
- {
- const unsigned char wm = (PARPORT_CONTROL_STROBE |
- PARPORT_CONTROL_AUTOFD |
- PARPORT_CONTROL_INIT |
- PARPORT_CONTROL_SELECT);
- const struct parport_pc_private *priv = p->physport->private_data;
- return priv->ctr & wm; /* Use soft copy */
- }
- unsigned char parport_pc_frob_control (struct parport *p, unsigned char mask,
- unsigned char val)
- {
- const unsigned char wm = (PARPORT_CONTROL_STROBE |
- PARPORT_CONTROL_AUTOFD |
- PARPORT_CONTROL_INIT |
- PARPORT_CONTROL_SELECT);
- /* Take this out when drivers have adapted to the newer interface. */
- if (mask & 0x20) {
- printk (KERN_DEBUG "%s (%s): use data_%s for this!n",
- p->name, p->cad->name,
- (val & 0x20) ? "reverse" : "forward");
- if (val & 0x20)
- parport_pc_data_reverse (p);
- else
- parport_pc_data_forward (p);
- }
- /* Restrict mask and val to control lines. */
- mask &= wm;
- val &= wm;
- return __parport_pc_frob_control (p, mask, val);
- }
- unsigned char parport_pc_read_status(struct parport *p)
- {
- return inb (STATUS (p));
- }
- void parport_pc_disable_irq(struct parport *p)
- {
- __parport_pc_frob_control (p, 0x10, 0);
- }
- void parport_pc_enable_irq(struct parport *p)
- {
- if (p->irq != PARPORT_IRQ_NONE)
- __parport_pc_frob_control (p, 0x10, 0x10);
- }
- void parport_pc_data_forward (struct parport *p)
- {
- __parport_pc_frob_control (p, 0x20, 0);
- }
- void parport_pc_data_reverse (struct parport *p)
- {
- __parport_pc_frob_control (p, 0x20, 0x20);
- }
- void parport_pc_init_state(struct pardevice *dev, struct parport_state *s)
- {
- s->u.pc.ctr = 0xc;
- if (dev->irq_func &&
- dev->port->irq != PARPORT_IRQ_NONE)
- /* Set ackIntEn */
- s->u.pc.ctr |= 0x10;
- s->u.pc.ecr = 0x34; /* NetMos chip can cause problems 0x24;
- * D.Gruszka VScom */
- }
- void parport_pc_save_state(struct parport *p, struct parport_state *s)
- {
- const struct parport_pc_private *priv = p->physport->private_data;
- s->u.pc.ctr = priv->ctr;
- if (priv->ecr)
- s->u.pc.ecr = inb (ECONTROL (p));
- }
- void parport_pc_restore_state(struct parport *p, struct parport_state *s)
- {
- struct parport_pc_private *priv = p->physport->private_data;
- register unsigned char c = s->u.pc.ctr & priv->ctr_writable;
- outb (c, CONTROL (p));
- priv->ctr = c;
- if (priv->ecr)
- ECR_WRITE (p, s->u.pc.ecr);
- }
- #ifdef CONFIG_PARPORT_1284
- static size_t parport_pc_epp_read_data (struct parport *port, void *buf,
- size_t length, int flags)
- {
- size_t got = 0;
- if (flags & PARPORT_W91284PIC) {
- unsigned char status;
- size_t left = length;
- /* use knowledge about data lines..:
- * nFault is 0 if there is at least 1 byte in the Warp's FIFO
- * pError is 1 if there are 16 bytes in the Warp's FIFO
- */
- status = inb (STATUS (port));
- while (!(status & 0x08) && (got < length)) {
- if ((left >= 16) && (status & 0x20) && !(status & 0x08)) {
- /* can grab 16 bytes from warp fifo */
- if (!((long)buf & 0x03)) {
- insl (EPPDATA (port), buf, 4);
- } else {
- insb (EPPDATA (port), buf, 16);
- }
- buf += 16;
- got += 16;
- left -= 16;
- } else {
- /* grab single byte from the warp fifo */
- *((char *)buf)++ = inb (EPPDATA (port));
- got++;
- left--;
- }
- status = inb (STATUS (port));
- if (status & 0x01) {
- /* EPP timeout should never occur... */
- printk (KERN_DEBUG "%s: EPP timeout occured while talking to "
- "w91284pic (should not have done)n", port->name);
- clear_epp_timeout (port);
- }
- }
- return got;
- }
- if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
- if (!(((long)buf | length) & 0x03)) {
- insl (EPPDATA (port), buf, (length >> 2));
- } else {
- insb (EPPDATA (port), buf, length);
- }
- if (inb (STATUS (port)) & 0x01) {
- clear_epp_timeout (port);
- return -EIO;
- }
- return length;
- }
- for (; got < length; got++) {
- *((char*)buf)++ = inb (EPPDATA(port));
- if (inb (STATUS (port)) & 0x01) {
- /* EPP timeout */
- clear_epp_timeout (port);
- break;
- }
- }
- return got;
- }
- static size_t parport_pc_epp_write_data (struct parport *port, const void *buf,
- size_t length, int flags)
- {
- size_t written = 0;
- if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
- if (!(((long)buf | length) & 0x03)) {
- outsl (EPPDATA (port), buf, (length >> 2));
- } else {
- outsb (EPPDATA (port), buf, length);
- }
- if (inb (STATUS (port)) & 0x01) {
- clear_epp_timeout (port);
- return -EIO;
- }
- return length;
- }
- for (; written < length; written++) {
- outb (*((char*)buf)++, EPPDATA(port));
- if (inb (STATUS(port)) & 0x01) {
- clear_epp_timeout (port);
- break;
- }
- }
- return written;
- }
- static size_t parport_pc_epp_read_addr (struct parport *port, void *buf,
- size_t length, int flags)
- {
- size_t got = 0;
- if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
- insb (EPPADDR (port), buf, length);
- if (inb (STATUS (port)) & 0x01) {
- clear_epp_timeout (port);
- return -EIO;
- }
- return length;
- }
- for (; got < length; got++) {
- *((char*)buf)++ = inb (EPPADDR (port));
- if (inb (STATUS (port)) & 0x01) {
- clear_epp_timeout (port);
- break;
- }
- }
- return got;
- }
- static size_t parport_pc_epp_write_addr (struct parport *port,
- const void *buf, size_t length,
- int flags)
- {
- size_t written = 0;
- if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
- outsb (EPPADDR (port), buf, length);
- if (inb (STATUS (port)) & 0x01) {
- clear_epp_timeout (port);
- return -EIO;
- }
- return length;
- }
- for (; written < length; written++) {
- outb (*((char*)buf)++, EPPADDR (port));
- if (inb (STATUS (port)) & 0x01) {
- clear_epp_timeout (port);
- break;
- }
- }
- return written;
- }
- static size_t parport_pc_ecpepp_read_data (struct parport *port, void *buf,
- size_t length, int flags)
- {
- size_t got;
- frob_set_mode (port, ECR_EPP);
- parport_pc_data_reverse (port);
- parport_pc_write_control (port, 0x4);
- got = parport_pc_epp_read_data (port, buf, length, flags);
- frob_set_mode (port, ECR_PS2);
- return got;
- }
- static size_t parport_pc_ecpepp_write_data (struct parport *port,
- const void *buf, size_t length,
- int flags)
- {
- size_t written;
- frob_set_mode (port, ECR_EPP);
- parport_pc_write_control (port, 0x4);
- parport_pc_data_forward (port);
- written = parport_pc_epp_write_data (port, buf, length, flags);
- frob_set_mode (port, ECR_PS2);
- return written;
- }
- static size_t parport_pc_ecpepp_read_addr (struct parport *port, void *buf,
- size_t length, int flags)
- {
- size_t got;
- frob_set_mode (port, ECR_EPP);
- parport_pc_data_reverse (port);
- parport_pc_write_control (port, 0x4);
- got = parport_pc_epp_read_addr (port, buf, length, flags);
- frob_set_mode (port, ECR_PS2);
- return got;
- }
- static size_t parport_pc_ecpepp_write_addr (struct parport *port,
- const void *buf, size_t length,
- int flags)
- {
- size_t written;
- frob_set_mode (port, ECR_EPP);
- parport_pc_write_control (port, 0x4);
- parport_pc_data_forward (port);
- written = parport_pc_epp_write_addr (port, buf, length, flags);
- frob_set_mode (port, ECR_PS2);
- return written;
- }
- #endif /* IEEE 1284 support */
- #ifdef CONFIG_PARPORT_PC_FIFO
- static size_t parport_pc_fifo_write_block_pio (struct parport *port,
- const void *buf, size_t length)
- {
- int ret = 0;
- const unsigned char *bufp = buf;
- size_t left = length;
- long expire = jiffies + port->physport->cad->timeout;
- const int fifo = FIFO (port);
- int poll_for = 8; /* 80 usecs */
- const struct parport_pc_private *priv = port->physport->private_data;
- const int fifo_depth = priv->fifo_depth;
- port = port->physport;
- /* We don't want to be interrupted every character. */
- parport_pc_disable_irq (port);
- /* set nErrIntrEn and serviceIntr */
- frob_econtrol (port, (1<<4) | (1<<2), (1<<4) | (1<<2));
- /* Forward mode. */
- parport_pc_data_forward (port); /* Must be in PS2 mode */
- while (left) {
- unsigned char byte;
- unsigned char ecrval = inb (ECONTROL (port));
- int i = 0;
- if (current->need_resched && time_before (jiffies, expire))
- /* Can't yield the port. */
- schedule ();
- /* Anyone else waiting for the port? */
- if (port->waithead) {
- printk (KERN_DEBUG "Somebody wants the portn");
- break;
- }
- if (ecrval & 0x02) {
- /* FIFO is full. Wait for interrupt. */
- /* Clear serviceIntr */
- ECR_WRITE (port, ecrval & ~(1<<2));
- false_alarm:
- ret = parport_wait_event (port, HZ);
- if (ret < 0) break;
- ret = 0;
- if (!time_before (jiffies, expire)) {
- /* Timed out. */
- printk (KERN_DEBUG "FIFO write timed outn");
- break;
- }
- ecrval = inb (ECONTROL (port));
- if (!(ecrval & (1<<2))) {
- if (current->need_resched &&
- time_before (jiffies, expire))
- schedule ();
- goto false_alarm;
- }
- continue;
- }
- /* Can't fail now. */
- expire = jiffies + port->cad->timeout;
- poll:
- if (signal_pending (current))
- break;
- if (ecrval & 0x01) {
- /* FIFO is empty. Blast it full. */
- const int n = left < fifo_depth ? left : fifo_depth;
- outsb (fifo, bufp, n);
- bufp += n;
- left -= n;
- /* Adjust the poll time. */
- if (i < (poll_for - 2)) poll_for--;
- continue;
- } else if (i++ < poll_for) {
- udelay (10);
- ecrval = inb (ECONTROL (port));
- goto poll;
- }
- /* Half-full (call me an optimist) */
- byte = *bufp++;
- outb (byte, fifo);
- left--;
- }
- dump_parport_state ("leave fifo_write_block_pio", port);
- return length - left;
- }
- static size_t parport_pc_fifo_write_block_dma (struct parport *port,
- const void *buf, size_t length)
- {
- int ret = 0;
- unsigned long dmaflag;
- size_t left = length;
- const struct parport_pc_private *priv = port->physport->private_data;
- dma_addr_t dma_addr, dma_handle;
- size_t maxlen = 0x10000; /* max 64k per DMA transfer */
- unsigned long start = (unsigned long) buf;
- unsigned long end = (unsigned long) buf + length - 1;
- dump_parport_state ("enter fifo_write_block_dma", port);
- if (end < MAX_DMA_ADDRESS) {
- /* If it would cross a 64k boundary, cap it at the end. */
- if ((start ^ end) & ~0xffffUL)
- maxlen = 0x10000 - (start & 0xffff);
- dma_addr = dma_handle = pci_map_single(priv->dev, (void *)buf, length,
- PCI_DMA_TODEVICE);
- } else {
- /* above 16 MB we use a bounce buffer as ISA-DMA is not possible */
- maxlen = PAGE_SIZE; /* sizeof(priv->dma_buf) */
- dma_addr = priv->dma_handle;
- dma_handle = 0;
- }
- port = port->physport;
- /* We don't want to be interrupted every character. */
- parport_pc_disable_irq (port);
- /* set nErrIntrEn and serviceIntr */
- frob_econtrol (port, (1<<4) | (1<<2), (1<<4) | (1<<2));
- /* Forward mode. */
- parport_pc_data_forward (port); /* Must be in PS2 mode */
- while (left) {
- long expire = jiffies + port->physport->cad->timeout;
- size_t count = left;
- if (count > maxlen)
- count = maxlen;
- if (!dma_handle) /* bounce buffer ! */
- memcpy(priv->dma_buf, buf, count);
- dmaflag = claim_dma_lock();
- disable_dma(port->dma);
- clear_dma_ff(port->dma);
- set_dma_mode(port->dma, DMA_MODE_WRITE);
- set_dma_addr(port->dma, dma_addr);
- set_dma_count(port->dma, count);
- /* Set DMA mode */
- frob_econtrol (port, 1<<3, 1<<3);
- /* Clear serviceIntr */
- frob_econtrol (port, 1<<2, 0);
- enable_dma(port->dma);
- release_dma_lock(dmaflag);
- /* assume DMA will be successful */
- left -= count;
- buf += count;
- if (dma_handle) dma_addr += count;
- /* Wait for interrupt. */
- false_alarm:
- ret = parport_wait_event (port, HZ);
- if (ret < 0) break;
- ret = 0;
- if (!time_before (jiffies, expire)) {
- /* Timed out. */
- printk (KERN_DEBUG "DMA write timed outn");
- break;
- }
- /* Is serviceIntr set? */
- if (!(inb (ECONTROL (port)) & (1<<2))) {
- if (current->need_resched)
- schedule ();
- goto false_alarm;
- }
- dmaflag = claim_dma_lock();
- disable_dma(port->dma);
- clear_dma_ff(port->dma);
- count = get_dma_residue(port->dma);
- release_dma_lock(dmaflag);
- if (current->need_resched)
- /* Can't yield the port. */
- schedule ();
- /* Anyone else waiting for the port? */
- if (port->waithead) {
- printk (KERN_DEBUG "Somebody wants the portn");
- break;
- }
- /* update for possible DMA residue ! */
- buf -= count;
- left += count;
- if (dma_handle) dma_addr -= count;
- }
- /* Maybe got here through break, so adjust for DMA residue! */
- dmaflag = claim_dma_lock();
- disable_dma(port->dma);
- clear_dma_ff(port->dma);
- left += get_dma_residue(port->dma);
- release_dma_lock(dmaflag);
- /* Turn off DMA mode */
- frob_econtrol (port, 1<<3, 0);
-
- if (dma_handle)
- pci_unmap_single(priv->dev, dma_handle, length, PCI_DMA_TODEVICE);
- dump_parport_state ("leave fifo_write_block_dma", port);
- return length - left;
- }
- /* Parallel Port FIFO mode (ECP chipsets) */
- size_t parport_pc_compat_write_block_pio (struct parport *port,
- const void *buf, size_t length,
- int flags)
- {
- size_t written;
- int r;
- long int expire;
- const struct parport_pc_private *priv = port->physport->private_data;
- /* Special case: a timeout of zero means we cannot call schedule(). */
- if (!port->physport->cad->timeout)
- return parport_ieee1284_write_compat (port, buf,
- length, flags);
- /* Set up parallel port FIFO mode.*/
- parport_pc_data_forward (port); /* Must be in PS2 mode */
- parport_pc_frob_control (port, PARPORT_CONTROL_STROBE, 0);
- r = change_mode (port, ECR_PPF); /* Parallel port FIFO */
- if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_PPF failedn", port->name);
- port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
- /* Write the data to the FIFO. */
- if (port->dma != PARPORT_DMA_NONE)
- written = parport_pc_fifo_write_block_dma (port, buf, length);
- else
- written = parport_pc_fifo_write_block_pio (port, buf, length);
- /* Finish up. */
- /* For some hardware we don't want to touch the mode until
- * the FIFO is empty, so allow 4 seconds for each position
- * in the fifo.
- */
- expire = jiffies + (priv->fifo_depth * HZ * 4);
- do {
- /* Wait for the FIFO to empty */
- r = change_mode (port, ECR_PS2);
- if (r != -EBUSY) {
- break;
- }
- } while (time_before (jiffies, expire));
- if (r == -EBUSY) {
- printk (KERN_DEBUG "%s: FIFO is stuckn", port->name);
- /* Prevent further data transfer. */
- frob_set_mode (port, ECR_TST);
- /* Adjust for the contents of the FIFO. */
- for (written -= priv->fifo_depth; ; written++) {
- if (inb (ECONTROL (port)) & 0x2) {
- /* Full up. */
- break;
- }
- outb (0, FIFO (port));
- }
- /* Reset the FIFO and return to PS2 mode. */
- frob_set_mode (port, ECR_PS2);
- }
- r = parport_wait_peripheral (port,
- PARPORT_STATUS_BUSY,
- PARPORT_STATUS_BUSY);
- if (r)
- printk (KERN_DEBUG
- "%s: BUSY timeout (%d) in compat_write_block_pion",
- port->name, r);
- port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
- return written;
- }
- /* ECP */
- #ifdef CONFIG_PARPORT_1284
- size_t parport_pc_ecp_write_block_pio (struct parport *port,
- const void *buf, size_t length,
- int flags)
- {
- size_t written;
- int r;
- long int expire;
- const struct parport_pc_private *priv = port->physport->private_data;
- /* Special case: a timeout of zero means we cannot call schedule(). */
- if (!port->physport->cad->timeout)
- return parport_ieee1284_ecp_write_data (port, buf,
- length, flags);
- /* Switch to forward mode if necessary. */
- if (port->physport->ieee1284.phase != IEEE1284_PH_FWD_IDLE) {
- /* Event 47: Set nInit high. */
- parport_frob_control (port,
- PARPORT_CONTROL_INIT
- | PARPORT_CONTROL_AUTOFD,
- PARPORT_CONTROL_INIT
- | PARPORT_CONTROL_AUTOFD);
- /* Event 49: PError goes high. */
- r = parport_wait_peripheral (port,
- PARPORT_STATUS_PAPEROUT,
- PARPORT_STATUS_PAPEROUT);
- if (r) {
- printk (KERN_DEBUG "%s: PError timeout (%d) "
- "in ecp_write_block_pion", port->name, r);
- }
- }
- /* Set up ECP parallel port mode.*/
- parport_pc_data_forward (port); /* Must be in PS2 mode */
- parport_pc_frob_control (port,
- PARPORT_CONTROL_STROBE |
- PARPORT_CONTROL_AUTOFD,
- 0);
- r = change_mode (port, ECR_ECP); /* ECP FIFO */
- if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_ECP failedn", port->name);
- port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
- /* Write the data to the FIFO. */
- if (port->dma != PARPORT_DMA_NONE)
- written = parport_pc_fifo_write_block_dma (port, buf, length);
- else
- written = parport_pc_fifo_write_block_pio (port, buf, length);
- /* Finish up. */
- /* For some hardware we don't want to touch the mode until
- * the FIFO is empty, so allow 4 seconds for each position
- * in the fifo.
- */
- expire = jiffies + (priv->fifo_depth * (HZ * 4));
- do {
- /* Wait for the FIFO to empty */
- r = change_mode (port, ECR_PS2);
- if (r != -EBUSY) {
- break;
- }
- } while (time_before (jiffies, expire));
- if (r == -EBUSY) {
- printk (KERN_DEBUG "%s: FIFO is stuckn", port->name);
- /* Prevent further data transfer. */
- frob_set_mode (port, ECR_TST);
- /* Adjust for the contents of the FIFO. */
- for (written -= priv->fifo_depth; ; written++) {
- if (inb (ECONTROL (port)) & 0x2) {
- /* Full up. */
- break;
- }
- outb (0, FIFO (port));
- }
- /* Reset the FIFO and return to PS2 mode. */
- frob_set_mode (port, ECR_PS2);
- /* Host transfer recovery. */
- parport_pc_data_reverse (port); /* Must be in PS2 mode */
- udelay (5);
- parport_frob_control (port, PARPORT_CONTROL_INIT, 0);
- r = parport_wait_peripheral (port, PARPORT_STATUS_PAPEROUT, 0);
- if (r)
- printk (KERN_DEBUG "%s: PE,1 timeout (%d) "
- "in ecp_write_block_pion", port->name, r);
- parport_frob_control (port,
- PARPORT_CONTROL_INIT,
- PARPORT_CONTROL_INIT);
- r = parport_wait_peripheral (port,
- PARPORT_STATUS_PAPEROUT,
- PARPORT_STATUS_PAPEROUT);
- if (r)
- printk (KERN_DEBUG "%s: PE,2 timeout (%d) "
- "in ecp_write_block_pion", port->name, r);
- }
- r = parport_wait_peripheral (port,
- PARPORT_STATUS_BUSY,
- PARPORT_STATUS_BUSY);
- if(r)
- printk (KERN_DEBUG
- "%s: BUSY timeout (%d) in ecp_write_block_pion",
- port->name, r);
- port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
- return written;
- }
- size_t parport_pc_ecp_read_block_pio (struct parport *port,
- void *buf, size_t length, int flags)
- {
- size_t left = length;
- size_t fifofull;
- int r;
- const int fifo = FIFO(port);
- const struct parport_pc_private *priv = port->physport->private_data;
- const int fifo_depth = priv->fifo_depth;
- char *bufp = buf;
- port = port->physport;
- DPRINTK (KERN_DEBUG "parport_pc: parport_pc_ecp_read_block_pion");
- dump_parport_state ("enter fcn", port);
- /* Special case: a timeout of zero means we cannot call schedule(). */
- if (!port->cad->timeout)
- return parport_ieee1284_ecp_read_data (port, buf,
- length, flags);
- if (port->ieee1284.mode == IEEE1284_MODE_ECPRLE) {
- /* If the peripheral is allowed to send RLE compressed
- * data, it is possible for a byte to expand to 128
- * bytes in the FIFO. */
- fifofull = 128;
- } else {
- fifofull = fifo_depth;
- }
- /* If the caller wants less than a full FIFO's worth of data,
- * go through software emulation. Otherwise we may have to throw
- * away data. */
- if (length < fifofull)
- return parport_ieee1284_ecp_read_data (port, buf,
- length, flags);
- if (port->ieee1284.phase != IEEE1284_PH_REV_IDLE) {
- /* change to reverse-idle phase (must be in forward-idle) */
- /* Event 38: Set nAutoFd low (also make sure nStrobe is high) */
- parport_frob_control (port,
- PARPORT_CONTROL_AUTOFD
- | PARPORT_CONTROL_STROBE,
- PARPORT_CONTROL_AUTOFD);
- parport_pc_data_reverse (port); /* Must be in PS2 mode */
- udelay (5);
- /* Event 39: Set nInit low to initiate bus reversal */
- parport_frob_control (port,
- PARPORT_CONTROL_INIT,
- 0);
- /* Event 40: Wait for nAckReverse (PError) to go low */
- r = parport_wait_peripheral (port, PARPORT_STATUS_PAPEROUT, 0);
- if (r) {
- printk (KERN_DEBUG "%s: PE timeout Event 40 (%d) "
- "in ecp_read_block_pion", port->name, r);
- return 0;
- }
- }
- /* Set up ECP FIFO mode.*/
- /* parport_pc_frob_control (port,
- PARPORT_CONTROL_STROBE |
- PARPORT_CONTROL_AUTOFD,
- PARPORT_CONTROL_AUTOFD); */
- r = change_mode (port, ECR_ECP); /* ECP FIFO */
- if (r) printk (KERN_DEBUG "%s: Warning change_mode ECR_ECP failedn", port->name);
- port->ieee1284.phase = IEEE1284_PH_REV_DATA;
- /* the first byte must be collected manually */
- dump_parport_state ("pre 43", port);
- /* Event 43: Wait for nAck to go low */
- r = parport_wait_peripheral (port, PARPORT_STATUS_ACK, 0);
- if (r) {
- /* timed out while reading -- no data */
- printk (KERN_DEBUG "PIO read timed out (initial byte)n");
- goto out_no_data;
- }
- /* read byte */
- *bufp++ = inb (DATA (port));
- left--;
- dump_parport_state ("43-44", port);
- /* Event 44: nAutoFd (HostAck) goes high to acknowledge */
- parport_pc_frob_control (port,
- PARPORT_CONTROL_AUTOFD,
- 0);
- dump_parport_state ("pre 45", port);
- /* Event 45: Wait for nAck to go high */
- /* r = parport_wait_peripheral (port, PARPORT_STATUS_ACK, PARPORT_STATUS_ACK); */
- dump_parport_state ("post 45", port);
- r = 0;
- if (r) {
- /* timed out while waiting for peripheral to respond to ack */
- printk (KERN_DEBUG "ECP PIO read timed out (waiting for nAck)n");
- /* keep hold of the byte we've got already */
- goto out_no_data;
- }
- /* Event 46: nAutoFd (HostAck) goes low to accept more data */
- parport_pc_frob_control (port,
- PARPORT_CONTROL_AUTOFD,
- PARPORT_CONTROL_AUTOFD);
- dump_parport_state ("rev idle", port);
- /* Do the transfer. */
- while (left > fifofull) {
- int ret;
- long int expire = jiffies + port->cad->timeout;
- unsigned char ecrval = inb (ECONTROL (port));
- if (current->need_resched && time_before (jiffies, expire))
- /* Can't yield the port. */
- schedule ();
- /* At this point, the FIFO may already be full. In
- * that case ECP is already holding back the
- * peripheral (assuming proper design) with a delayed
- * handshake. Work fast to avoid a peripheral
- * timeout. */
- if (ecrval & 0x01) {
- /* FIFO is empty. Wait for interrupt. */
- dump_parport_state ("FIFO empty", port);
- /* Anyone else waiting for the port? */
- if (port->waithead) {
- printk (KERN_DEBUG "Somebody wants the portn");
- break;
- }
- /* Clear serviceIntr */
- ECR_WRITE (port, ecrval & ~(1<<2));
- false_alarm:
- dump_parport_state ("waiting", port);
- ret = parport_wait_event (port, HZ);
- DPRINTK (KERN_DEBUG "parport_wait_event returned %dn", ret);
- if (ret < 0)
- break;
- ret = 0;
- if (!time_before (jiffies, expire)) {
- /* Timed out. */
- dump_parport_state ("timeout", port);
- printk (KERN_DEBUG "PIO read timed outn");
- break;
- }
- ecrval = inb (ECONTROL (port));
- if (!(ecrval & (1<<2))) {
- if (current->need_resched &&
- time_before (jiffies, expire)) {
- schedule ();
- }
- goto false_alarm;
- }
- /* Depending on how the FIFO threshold was
- * set, how long interrupt service took, and
- * how fast the peripheral is, we might be
- * lucky and have a just filled FIFO. */
- continue;
- }
- if (ecrval & 0x02) {
- /* FIFO is full. */
- dump_parport_state ("FIFO full", port);
- insb (fifo, bufp, fifo_depth);
- bufp += fifo_depth;
- left -= fifo_depth;
- continue;
- }
- DPRINTK (KERN_DEBUG "*** ecp_read_block_pio: reading one byte from the FIFOn");
- /* FIFO not filled. We will cycle this loop for a while
- * and either the peripheral will fill it faster,
- * tripping a fast empty with insb, or we empty it. */
- *bufp++ = inb (fifo);
- left--;
- }
- /* scoop up anything left in the FIFO */
- while (left && !(inb (ECONTROL (port) & 0x01))) {
- *bufp++ = inb (fifo);
- left--;
- }
- port->ieee1284.phase = IEEE1284_PH_REV_IDLE;
- dump_parport_state ("rev idle2", port);
- out_no_data:
- /* Go to forward idle mode to shut the peripheral up (event 47). */
- parport_frob_control (port, PARPORT_CONTROL_INIT, PARPORT_CONTROL_INIT);
- /* event 49: PError goes high */
- r = parport_wait_peripheral (port,
- PARPORT_STATUS_PAPEROUT,
- PARPORT_STATUS_PAPEROUT);
- if (r) {
- printk (KERN_DEBUG
- "%s: PE timeout FWDIDLE (%d) in ecp_read_block_pion",
- port->name, r);
- }
- port->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
- /* Finish up. */
- {
- int lost = get_fifo_residue (port);
- if (lost)
- /* Shouldn't happen with compliant peripherals. */
- printk (KERN_DEBUG "%s: DATA LOSS (%d bytes)!n",
- port->name, lost);
- }
- dump_parport_state ("fwd idle", port);
- return length - left;
- }
- #endif /* IEEE 1284 support */
- #endif /* Allowed to use FIFO/DMA */
- /*
- * ******************************************
- * INITIALISATION AND MODULE STUFF BELOW HERE
- * ******************************************
- */
- void parport_pc_inc_use_count(void)
- {
- #ifdef MODULE
- MOD_INC_USE_COUNT;
- #endif
- }
- void parport_pc_dec_use_count(void)
- {
- #ifdef MODULE
- MOD_DEC_USE_COUNT;
- #endif
- }
- struct parport_operations parport_pc_ops =
- {
- parport_pc_write_data,
- parport_pc_read_data,
- parport_pc_write_control,
- parport_pc_read_control,
- parport_pc_frob_control,
- parport_pc_read_status,
- parport_pc_enable_irq,
- parport_pc_disable_irq,
- parport_pc_data_forward,
- parport_pc_data_reverse,
- parport_pc_init_state,
- parport_pc_save_state,
- parport_pc_restore_state,
- parport_pc_inc_use_count,
- parport_pc_dec_use_count,
- parport_ieee1284_epp_write_data,
- parport_ieee1284_epp_read_data,
- parport_ieee1284_epp_write_addr,
- parport_ieee1284_epp_read_addr,
- parport_ieee1284_ecp_write_data,
- parport_ieee1284_ecp_read_data,
- parport_ieee1284_ecp_write_addr,
- parport_ieee1284_write_compat,
- parport_ieee1284_read_nibble,
- parport_ieee1284_read_byte,
- };
- #ifdef CONFIG_PARPORT_PC_SUPERIO
- /* Super-IO chipset detection, Winbond, SMSC */
- static void __devinit show_parconfig_smsc37c669(int io, int key)
- {
- int cr1,cr4,cra,cr23,cr26,cr27,i=0;
- static const char *modes[]={ "SPP and Bidirectional (PS/2)",
- "EPP and SPP",
- "ECP",
- "ECP and EPP" };
- outb(key,io);
- outb(key,io);
- outb(1,io);
- cr1=inb(io+1);
- outb(4,io);
- cr4=inb(io+1);
- outb(0x0a,io);
- cra=inb(io+1);
- outb(0x23,io);
- cr23=inb(io+1);
- outb(0x26,io);
- cr26=inb(io+1);
- outb(0x27,io);
- cr27=inb(io+1);
- outb(0xaa,io);
- if (verbose_probing) {
- printk (KERN_INFO "SMSC 37c669 LPT Config: cr_1=0x%02x, 4=0x%02x, "
- "A=0x%2x, 23=0x%02x, 26=0x%02x, 27=0x%02xn",
- cr1,cr4,cra,cr23,cr26,cr27);
-
- /* The documentation calls DMA and IRQ-Lines by letters, so
- the board maker can/will wire them
- appropriately/randomly... G=reserved H=IDE-irq, */
- printk (KERN_INFO "SMSC LPT Config: io=0x%04x, irq=%c, dma=%c, "
- "fifo threshold=%dn", cr23*4,
- (cr27 &0x0f) ? 'A'-1+(cr27 &0x0f): '-',
- (cr26 &0x0f) ? 'A'-1+(cr26 &0x0f): '-', cra & 0x0f);
- printk(KERN_INFO "SMSC LPT Config: enabled=%s power=%sn",
- (cr23*4 >=0x100) ?"yes":"no", (cr1 & 4) ? "yes" : "no");
- printk(KERN_INFO "SMSC LPT Config: Port mode=%s, EPP version =%sn",
- (cr1 & 0x08 ) ? "Standard mode only (SPP)" : modes[cr4 & 0x03],
- (cr4 & 0x40) ? "1.7" : "1.9");
- }
-
- /* Heuristics ! BIOS setup for this mainboard device limits
- the choices to standard settings, i.e. io-address and IRQ
- are related, however DMA can be 1 or 3, assume DMA_A=DMA1,
- DMA_C=DMA3 (this is true e.g. for TYAN 1564D Tomcat IV) */
- if(cr23*4 >=0x100) { /* if active */
- while((superios[i].io!= 0) && (i<NR_SUPERIOS))
- i++;
- if(i==NR_SUPERIOS)
- printk(KERN_INFO "Super-IO: too many chips!n");
- else {
- int d;
- switch (cr23*4) {
- case 0x3bc:
- superios[i].io = 0x3bc;
- superios[i].irq = 7;
- break;
- case 0x378:
- superios[i].io = 0x378;
- superios[i].irq = 7;
- break;
- case 0x278:
- superios[i].io = 0x278;
- superios[i].irq = 5;
- }
- d=(cr26 &0x0f);
- if((d==1) || (d==3))
- superios[i].dma= d;
- else
- superios[i].dma= PARPORT_DMA_NONE;
- }
- }
- }
- static void __devinit show_parconfig_winbond(int io, int key)
- {
- int cr30,cr60,cr61,cr70,cr74,crf0,i=0;
- static const char *modes[] = {
- "Standard (SPP) and Bidirectional(PS/2)", /* 0 */
- "EPP-1.9 and SPP",
- "ECP",
- "ECP and EPP-1.9",
- "Standard (SPP)",
- "EPP-1.7 and SPP", /* 5 */
- "undefined!",
- "ECP and EPP-1.7" };
- static char *irqtypes[] = { "pulsed low, high-Z", "follows nACK" };
-
- /* The registers are called compatible-PnP because the
- register layout is modelled after ISA-PnP, the access
- method is just another ... */
- outb(key,io);
- outb(key,io);
- outb(0x07,io); /* Register 7: Select Logical Device */
- outb(0x01,io+1); /* LD1 is Parallel Port */
- outb(0x30,io);
- cr30=inb(io+1);
- outb(0x60,io);
- cr60=inb(io+1);
- outb(0x61,io);
- cr61=inb(io+1);
- outb(0x70,io);
- cr70=inb(io+1);
- outb(0x74,io);
- cr74=inb(io+1);
- outb(0xf0,io);
- crf0=inb(io+1);
- outb(0xaa,io);
- if (verbose_probing) {
- printk(KERN_INFO "Winbond LPT Config: cr_30=%02x 60,61=%02x%02x "
- "70=%02x 74=%02x, f0=%02xn", cr30,cr60,cr61,cr70,cr74,crf0);
- printk(KERN_INFO "Winbond LPT Config: active=%s, io=0x%02x%02x irq=%d, ",
- (cr30 & 0x01) ? "yes":"no", cr60,cr61,cr70&0x0f );
- if ((cr74 & 0x07) > 3)
- printk("dma=nonen");
- else
- printk("dma=%dn",cr74 & 0x07);
- printk(KERN_INFO "Winbond LPT Config: irqtype=%s, ECP fifo threshold=%dn",
- irqtypes[crf0>>7], (crf0>>3)&0x0f);
- printk(KERN_INFO "Winbond LPT Config: Port mode=%sn", modes[crf0 & 0x07]);
- }
- if(cr30 & 0x01) { /* the settings can be interrogated later ... */
- while((superios[i].io!= 0) && (i<NR_SUPERIOS))
- i++;
- if(i==NR_SUPERIOS)
- printk(KERN_INFO "Super-IO: too many chips!n");
- else {
- superios[i].io = (cr60<<8)|cr61;
- superios[i].irq = cr70&0x0f;
- superios[i].dma = (((cr74 & 0x07) > 3) ?
- PARPORT_DMA_NONE : (cr74 & 0x07));
- }
- }
- }
- static void __devinit decode_winbond(int efer, int key, int devid, int devrev, int oldid)
- {
- const char *type = "unknown";
- int id,progif=2;
- if (devid == devrev)
- /* simple heuristics, we happened to read some
- non-winbond register */
- return;
- id=(devid<<8) | devrev;
- /* Values are from public data sheets pdf files, I can just
- confirm 83977TF is correct :-) */
- if (id == 0x9771) type="83977F/AF";
- else if (id == 0x9773) type="83977TF / SMSC 97w33x/97w34x";
- else if (id == 0x9774) type="83977ATF";
- else if ((id & ~0x0f) == 0x5270) type="83977CTF / SMSC 97w36x";
- else if ((id & ~0x0f) == 0x52f0) type="83977EF / SMSC 97w35x";
- else if ((id & ~0x0f) == 0x5210) type="83627";
- else if ((id & ~0x0f) == 0x6010) type="83697HF";
- else if ((oldid &0x0f ) == 0x0a) { type="83877F"; progif=1;}
- else if ((oldid &0x0f ) == 0x0b) { type="83877AF"; progif=1;}
- else if ((oldid &0x0f ) == 0x0c) { type="83877TF"; progif=1;}
- else if ((oldid &0x0f ) == 0x0d) { type="83877ATF"; progif=1;}
- else progif=0;
- if (verbose_probing)
- printk(KERN_INFO "Winbond chip at EFER=0x%x key=0x%02x "
- "devid=%02x devrev=%02x oldid=%02x type=%sn",
- efer, key, devid, devrev, oldid, type);
- if (progif == 2)
- show_parconfig_winbond(efer,key);
- }
- static void __devinit decode_smsc(int efer, int key, int devid, int devrev)
- {
- const char *type = "unknown";
- void (*func)(int io, int key);
- int id;
- if (devid == devrev)
- /* simple heuristics, we happened to read some
- non-smsc register */
- return;
- func=NULL;
- id=(devid<<8) | devrev;
- if (id==0x0302) {type="37c669"; func=show_parconfig_smsc37c669;}
- else if (id==0x6582) type="37c665IR";
- else if (devid==0x65) type="37c665GT";
- else if (devid==0x66) type="37c666GT";
- if (verbose_probing)
- printk(KERN_INFO "SMSC chip at EFER=0x%x "
- "key=0x%02x devid=%02x devrev=%02x type=%sn",
- efer, key, devid, devrev, type);
- if (func)
- func(efer,key);
- }
- static void __devinit winbond_check(int io, int key)
- {
- int devid,devrev,oldid,x_devid,x_devrev,x_oldid;
- /* First probe without key */
- outb(0x20,io);
- x_devid=inb(io+1);
- outb(0x21,io);
- x_devrev=inb(io+1);
- outb(0x09,io);
- x_oldid=inb(io+1);
- outb(key,io);
- outb(key,io); /* Write Magic Sequence to EFER, extended
- funtion enable register */
- outb(0x20,io); /* Write EFIR, extended function index register */
- devid=inb(io+1); /* Read EFDR, extended function data register */
- outb(0x21,io);
- devrev=inb(io+1);
- outb(0x09,io);
- oldid=inb(io+1);
- outb(0xaa,io); /* Magic Seal */
- if ((x_devid == devid) && (x_devrev == devrev) && (x_oldid == oldid))
- return; /* protection against false positives */
- decode_winbond(io,key,devid,devrev,oldid);
- }
- static void __devinit winbond_check2(int io,int key)
- {
- int devid,devrev,oldid,x_devid,x_devrev,x_oldid;
- /* First probe without the key */
- outb(0x20,io+2);
- x_devid=inb(io+2);
- outb(0x21,io+1);
- x_devrev=inb(io+2);
- outb(0x09,io+1);
- x_oldid=inb(io+2);
- outb(key,io); /* Write Magic Byte to EFER, extended
- funtion enable register */
- outb(0x20,io+2); /* Write EFIR, extended function index register */
- devid=inb(io+2); /* Read EFDR, extended function data register */
- outb(0x21,io+1);
- devrev=inb(io+2);
- outb(0x09,io+1);
- oldid=inb(io+2);
- outb(0xaa,io); /* Magic Seal */
- if ((x_devid == devid) && (x_devrev == devrev) && (x_oldid == oldid))
- return; /* protection against false positives */
- decode_winbond(io,key,devid,devrev,oldid);
- }
- static void __devinit smsc_check(int io, int key)
- {
- int id,rev,oldid,oldrev,x_id,x_rev,x_oldid,x_oldrev;
- /* First probe without the key */
- outb(0x0d,io);
- x_oldid=inb(io+1);
- outb(0x0e,io);
- x_oldrev=inb(io+1);
- outb(0x20,io);
- x_id=inb(io+1);
- outb(0x21,io);
- x_rev=inb(io+1);
- outb(key,io);
- outb(key,io); /* Write Magic Sequence to EFER, extended
- funtion enable register */
- outb(0x0d,io); /* Write EFIR, extended function index register */
- oldid=inb(io+1); /* Read EFDR, extended function data register */
- outb(0x0e,io);
- oldrev=inb(io+1);
- outb(0x20,io);
- id=inb(io+1);
- outb(0x21,io);
- rev=inb(io+1);
- outb(0xaa,io); /* Magic Seal */
- if ((x_id == id) && (x_oldrev == oldrev) &&
- (x_oldid == oldid) && (x_rev == rev))
- return; /* protection against false positives */
- decode_smsc(io,key,oldid,oldrev);
- }
- static void __devinit detect_and_report_winbond (void)
- {
- if (verbose_probing)
- printk(KERN_DEBUG "Winbond Super-IO detection, now testing ports 3F0,370,250,4E,2E ...n");
- winbond_check(0x3f0,0x87);
- winbond_check(0x370,0x87);
- winbond_check(0x2e ,0x87);
- winbond_check(0x4e ,0x87);
- winbond_check(0x3f0,0x86);
- winbond_check2(0x250,0x88);
- winbond_check2(0x250,0x89);
- }
- static void __devinit detect_and_report_smsc (void)
- {
- if (verbose_probing)
- printk(KERN_DEBUG "SMSC Super-IO detection, now testing Ports 2F0, 370 ...n");
- smsc_check(0x3f0,0x55);
- smsc_check(0x370,0x55);
- smsc_check(0x3f0,0x44);
- smsc_check(0x370,0x44);
- }
- #endif /* CONFIG_PARPORT_PC_SUPERIO */
- static int __devinit get_superio_dma (struct parport *p)
- {
- int i=0;
- while( (superios[i].io != p->base) && (i<NR_SUPERIOS))
- i++;
- if (i!=NR_SUPERIOS)
- return superios[i].dma;
- return PARPORT_DMA_NONE;
- }
- static int __devinit get_superio_irq (struct parport *p)
- {
- int i=0;
- while( (superios[i].io != p->base) && (i<NR_SUPERIOS))
- i++;
- if (i!=NR_SUPERIOS)
- return superios[i].irq;
- return PARPORT_IRQ_NONE;
- }
-
- /* --- Mode detection ------------------------------------- */
- /*
- * Checks for port existence, all ports support SPP MODE
- * Returns:
- * 0 : No parallel port at this adress
- * PARPORT_MODE_PCSPP : SPP port detected
- * (if the user specified an ioport himself,
- * this shall always be the case!)
- *
- */
- static int __devinit parport_SPP_supported(struct parport *pb)
- {
- unsigned char r, w;
- /*
- * first clear an eventually pending EPP timeout
- * I (sailer@ife.ee.ethz.ch) have an SMSC chipset
- * that does not even respond to SPP cycles if an EPP
- * timeout is pending
- */
- clear_epp_timeout(pb);
- /* Do a simple read-write test to make sure the port exists. */
- w = 0xc;
- outb (w, CONTROL (pb));
- /* Is there a control register that we can read from? Some
- * ports don't allow reads, so read_control just returns a
- * software copy. Some ports _do_ allow reads, so bypass the
- * software copy here. In addition, some bits aren't
- * writable. */
- r = inb (CONTROL (pb));
- if ((r & 0xf) == w) {
- w = 0xe;
- outb (w, CONTROL (pb));
- r = inb (CONTROL (pb));
- outb (0xc, CONTROL (pb));
- if ((r & 0xf) == w)
- return PARPORT_MODE_PCSPP;
- }
- if (user_specified)
- /* That didn't work, but the user thinks there's a
- * port here. */
- printk (KERN_INFO "parport 0x%lx (WARNING): CTR: "
- "wrote 0x%02x, read 0x%02xn", pb->base, w, r);
- /* Try the data register. The data lines aren't tri-stated at
- * this stage, so we expect back what we wrote. */
- w = 0xaa;
- parport_pc_write_data (pb, w);
- r = parport_pc_read_data (pb);
- if (r == w) {
- w = 0x55;
- parport_pc_write_data (pb, w);
- r = parport_pc_read_data (pb);
- if (r == w)
- return PARPORT_MODE_PCSPP;
- }
- if (user_specified) {
- /* Didn't work, but the user is convinced this is the
- * place. */
- printk (KERN_INFO "parport 0x%lx (WARNING): DATA: "
- "wrote 0x%02x, read 0x%02xn", pb->base, w, r);
- printk (KERN_INFO "parport 0x%lx: You gave this address, "
- "but there is probably no parallel port there!n",
- pb->base);
- }
- /* It's possible that we can't read the control register or
- * the data register. In that case just believe the user. */
- if (user_specified)
- return PARPORT_MODE_PCSPP;
- return 0;
- }
- /* Check for ECR
- *
- * Old style XT ports alias io ports every 0x400, hence accessing ECR
- * on these cards actually accesses the CTR.
- *
- * Modern cards don't do this but reading from ECR will return 0xff
- * regardless of what is written here if the card does NOT support
- * ECP.
- *
- * We first check to see if ECR is the same as CTR. If not, the low
- * two bits of ECR aren't writable, so we check by writing ECR and
- * reading it back to see if it's what we expect.
- */
- static int __devinit parport_ECR_present(struct parport *pb)
- {
- struct parport_pc_private *priv = pb->private_data;
- unsigned char r = 0xc;
- outb (r, CONTROL (pb));
- if ((inb (ECONTROL (pb)) & 0x3) == (r & 0x3)) {
- outb (r ^ 0x2, CONTROL (pb)); /* Toggle bit 1 */
- r = inb (CONTROL (pb));
- if ((inb (ECONTROL (pb)) & 0x2) == (r & 0x2))
- goto no_reg; /* Sure that no ECR register exists */
- }
-
- if ((inb (ECONTROL (pb)) & 0x3 ) != 0x1)
- goto no_reg;
- ECR_WRITE (pb, 0x34);
- if (inb (ECONTROL (pb)) != 0x35)
- goto no_reg;
- priv->ecr = 1;
- outb (0xc, CONTROL (pb));
-
- /* Go to mode 000 */
- frob_set_mode (pb, ECR_SPP);
- return 1;
- no_reg:
- outb (0xc, CONTROL (pb));
- return 0;
- }
- #ifdef CONFIG_PARPORT_1284
- /* Detect PS/2 support.
- *
- * Bit 5 (0x20) sets the PS/2 data direction; setting this high
- * allows us to read data from the data lines. In theory we would get back
- * 0xff but any peripheral attached to the port may drag some or all of the
- * lines down to zero. So if we get back anything that isn't the contents
- * of the data register we deem PS/2 support to be present.
- *
- * Some SPP ports have "half PS/2" ability - you can't turn off the line
- * drivers, but an external peripheral with sufficiently beefy drivers of
- * its own can overpower them and assert its own levels onto the bus, from
- * where they can then be read back as normal. Ports with this property
- * and the right type of device attached are likely to fail the SPP test,
- * (as they will appear to have stuck bits) and so the fact that they might
- * be misdetected here is rather academic.
- */
- static int __devinit parport_PS2_supported(struct parport *pb)
- {
- int ok = 0;
-
- clear_epp_timeout(pb);
- /* try to tri-state the buffer */
- parport_pc_data_reverse (pb);
-
- parport_pc_write_data(pb, 0x55);
- if (parport_pc_read_data(pb) != 0x55) ok++;
- parport_pc_write_data(pb, 0xaa);
- if (parport_pc_read_data(pb) != 0xaa) ok++;
- /* cancel input mode */
- parport_pc_data_forward (pb);
- if (ok) {
- pb->modes |= PARPORT_MODE_TRISTATE;
- } else {
- struct parport_pc_private *priv = pb->private_data;
- priv->ctr_writable &= ~0x20;
- }
- return ok;
- }
- #ifdef CONFIG_PARPORT_PC_FIFO
- static int __devinit parport_ECP_supported(struct parport *pb)
- {
- int i;
- int config, configb;
- int pword;
- struct parport_pc_private *priv = pb->private_data;
- /* Translate ECP intrLine to ISA irq value */
- static const int intrline[]= { 0, 7, 9, 10, 11, 14, 15, 5 };
- /* If there is no ECR, we have no hope of supporting ECP. */
- if (!priv->ecr)
- return 0;
- /* Find out FIFO depth */
- ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
- ECR_WRITE (pb, ECR_TST << 5); /* TEST FIFO */
- for (i=0; i < 1024 && !(inb (ECONTROL (pb)) & 0x02); i++)
- outb (0xaa, FIFO (pb));
- /*
- * Using LGS chipset it uses ECR register, but
- * it doesn't support ECP or FIFO MODE
- */
- if (i == 1024) {
- ECR_WRITE (pb, ECR_SPP << 5);
- return 0;
- }
- priv->fifo_depth = i;
- if (verbose_probing)
- printk (KERN_DEBUG "0x%lx: FIFO is %d bytesn", pb->base, i);
- /* Find out writeIntrThreshold */
- frob_econtrol (pb, 1<<2, 1<<2);
- frob_econtrol (pb, 1<<2, 0);
- for (i = 1; i <= priv->fifo_depth; i++) {
- inb (FIFO (pb));
- udelay (50);
- if (inb (ECONTROL (pb)) & (1<<2))
- break;
- }
- if (i <= priv->fifo_depth) {
- if (verbose_probing)
- printk (KERN_DEBUG "0x%lx: writeIntrThreshold is %dn",
- pb->base, i);
- } else
- /* Number of bytes we know we can write if we get an
- interrupt. */
- i = 0;
- priv->writeIntrThreshold = i;
- /* Find out readIntrThreshold */
- frob_set_mode (pb, ECR_PS2); /* Reset FIFO and enable PS2 */
- parport_pc_data_reverse (pb); /* Must be in PS2 mode */
- frob_set_mode (pb, ECR_TST); /* Test FIFO */
- frob_econtrol (pb, 1<<2, 1<<2);
- frob_econtrol (pb, 1<<2, 0);
- for (i = 1; i <= priv->fifo_depth; i++) {
- outb (0xaa, FIFO (pb));
- if (inb (ECONTROL (pb)) & (1<<2))
- break;
- }
- if (i <= priv->fifo_depth) {
- if (verbose_probing)
- printk (KERN_INFO "0x%lx: readIntrThreshold is %dn",
- pb->base, i);
- } else
- /* Number of bytes we can read if we get an interrupt. */
- i = 0;
- priv->readIntrThreshold = i;
- ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
- ECR_WRITE (pb, 0xf4); /* Configuration mode */
- config = inb (CONFIGA (pb));
- pword = (config >> 4) & 0x7;
- switch (pword) {
- case 0:
- pword = 2;
- printk (KERN_WARNING "0x%lx: Unsupported pword size!n",
- pb->base);
- break;
- case 2:
- pword = 4;
- printk (KERN_WARNING "0x%lx: Unsupported pword size!n",
- pb->base);
- break;
- default:
- printk (KERN_WARNING "0x%lx: Unknown implementation IDn",
- pb->base);
- /* Assume 1 */
- case 1:
- pword = 1;
- }
- priv->pword = pword;
- if (verbose_probing) {
- printk (KERN_DEBUG "0x%lx: PWord is %d bitsn", pb->base, 8 * pword);
-
- printk (KERN_DEBUG "0x%lx: Interrupts are ISA-%sn", pb->base,
- config & 0x80 ? "Level" : "Pulses");
- configb = inb (CONFIGB (pb));
- printk (KERN_DEBUG "0x%lx: ECP port cfgA=0x%02x cfgB=0x%02xn",
- pb->base, config, configb);
- printk (KERN_DEBUG "0x%lx: ECP settings irq=", pb->base);
- if ((configb >>3) & 0x07)
- printk("%d",intrline[(configb >>3) & 0x07]);
- else
- printk("<none or set by other means>");
- printk (" dma=");
- if( (configb & 0x03 ) == 0x00)
- printk("<none or set by other means>n");
- else
- printk("%dn",configb & 0x07);
- }
- /* Go back to mode 000 */
- frob_set_mode (pb, ECR_SPP);
- return 1;
- }
- #endif
- static int __devinit parport_ECPPS2_supported(struct parport *pb)
- {
- const struct parport_pc_private *priv = pb->private_data;
- int result;
- unsigned char oecr;
- if (!priv->ecr)
- return 0;
- oecr = inb (ECONTROL (pb));
- ECR_WRITE (pb, ECR_PS2 << 5);
- result = parport_PS2_supported(pb);
- ECR_WRITE (pb, oecr);
- return result;
- }
- /* EPP mode detection */
- static int __devinit parport_EPP_supported(struct parport *pb)
- {
- const struct parport_pc_private *priv = pb->private_data;
- /*
- * Theory:
- * Bit 0 of STR is the EPP timeout bit, this bit is 0
- * when EPP is possible and is set high when an EPP timeout
- * occurs (EPP uses the HALT line to stop the CPU while it does
- * the byte transfer, an EPP timeout occurs if the attached
- * device fails to respond after 10 micro seconds).
- *
- * This bit is cleared by either reading it (National Semi)
- * or writing a 1 to the bit (SMC, UMC, WinBond), others ???
- * This bit is always high in non EPP modes.
- */
- /* If EPP timeout bit clear then EPP available */
- if (!clear_epp_timeout(pb)) {
- return 0; /* No way to clear timeout */
- }
- /* Check for Intel bug. */
- if (priv->ecr) {
- unsigned char i;
- for (i = 0x00; i < 0x80; i += 0x20) {
- ECR_WRITE (pb, i);
- if (clear_epp_timeout (pb)) {
- /* Phony EPP in ECP. */
- return 0;
- }
- }
- }
- pb->modes |= PARPORT_MODE_EPP;
- /* Set up access functions to use EPP hardware. */
- pb->ops->epp_read_data = parport_pc_epp_read_data;
- pb->ops->epp_write_data = parport_pc_epp_write_data;
- pb->ops->epp_read_addr = parport_pc_epp_read_addr;
- pb->ops->epp_write_addr = parport_pc_epp_write_addr;
- return 1;
- }
- static int __devinit parport_ECPEPP_supported(struct parport *pb)
- {
- struct parport_pc_private *priv = pb->private_data;
- int result;
- unsigned char oecr;
- if (!priv->ecr) {
- return 0;
- }
- oecr = inb (ECONTROL (pb));
- /* Search for SMC style EPP+ECP mode */
- ECR_WRITE (pb, 0x80);
- outb (0x04, CONTROL (pb));
- result = parport_EPP_supported(pb);
- ECR_WRITE (pb, oecr);
- if (result) {
- /* Set up access functions to use ECP+EPP hardware. */
- pb->ops->epp_read_data = parport_pc_ecpepp_read_data;
- pb->ops->epp_write_data = parport_pc_ecpepp_write_data;
- pb->ops->epp_read_addr = parport_pc_ecpepp_read_addr;
- pb->ops->epp_write_addr = parport_pc_ecpepp_write_addr;
- }
- return result;
- }
- #else /* No IEEE 1284 support */
- /* Don't bother probing for modes we know we won't use. */
- static int __devinit parport_PS2_supported(struct parport *pb) { return 0; }
- #ifdef CONFIG_PARPORT_PC_FIFO
- static int __devinit parport_ECP_supported(struct parport *pb) { return 0; }
- #endif
- static int __devinit parport_EPP_supported(struct parport *pb) { return 0; }
- static int __devinit parport_ECPEPP_supported(struct parport *pb){return 0;}
- static int __devinit parport_ECPPS2_supported(struct parport *pb){return 0;}
- #endif /* No IEEE 1284 support */
- /* --- IRQ detection -------------------------------------- */
- /* Only if supports ECP mode */
- static int __devinit programmable_irq_support(struct parport *pb)
- {
- int irq, intrLine;
- unsigned char oecr = inb (ECONTROL (pb));
- static const int lookup[8] = {
- PARPORT_IRQ_NONE, 7, 9, 10, 11, 14, 15, 5
- };
- ECR_WRITE (pb, ECR_CNF << 5); /* Configuration MODE */
- intrLine = (inb (CONFIGB (pb)) >> 3) & 0x07;
- irq = lookup[intrLine];
- ECR_WRITE (pb, oecr);
- return irq;
- }
- static int __devinit irq_probe_ECP(struct parport *pb)
- {
- int i;
- unsigned long irqs;
- sti();
- irqs = probe_irq_on();
-
- ECR_WRITE (pb, ECR_SPP << 5); /* Reset FIFO */
- ECR_WRITE (pb, (ECR_TST << 5) | 0x04);
- ECR_WRITE (pb, ECR_TST << 5);
- /* If Full FIFO sure that writeIntrThreshold is generated */
- for (i=0; i < 1024 && !(inb (ECONTROL (pb)) & 0x02) ; i++)
- outb (0xaa, FIFO (pb));
-
- pb->irq = probe_irq_off(irqs);
- ECR_WRITE (pb, ECR_SPP << 5);
- if (pb->irq <= 0)
- pb->irq = PARPORT_IRQ_NONE;
- return pb->irq;
- }
- /*
- * This detection seems that only works in National Semiconductors
- * This doesn't work in SMC, LGS, and Winbond
- */
- static int __devinit irq_probe_EPP(struct parport *pb)
- {
- #ifndef ADVANCED_DETECT
- return PARPORT_IRQ_NONE;
- #else
- int irqs;
- unsigned char oecr;
- if (pb->modes & PARPORT_MODE_PCECR)
- oecr = inb (ECONTROL (pb));
- sti();
- irqs = probe_irq_on();
- if (pb->modes & PARPORT_MODE_PCECR)
- frob_econtrol (pb, 0x10, 0x10);
-
- clear_epp_timeout(pb);
- parport_pc_frob_control (pb, 0x20, 0x20);
- parport_pc_frob_control (pb, 0x10, 0x10);
- clear_epp_timeout(pb);
- /* Device isn't expecting an EPP read
- * and generates an IRQ.
- */
- parport_pc_read_epp(pb);
- udelay(20);
- pb->irq = probe_irq_off (irqs);
- if (pb->modes & PARPORT_MODE_PCECR)
- ECR_WRITE (pb, oecr);
- parport_pc_write_control(pb, 0xc);
- if (pb->irq <= 0)
- pb->irq = PARPORT_IRQ_NONE;
- return pb->irq;
- #endif /* Advanced detection */
- }
- static int __devinit irq_probe_SPP(struct parport *pb)
- {
- /* Don't even try to do this. */
- return PARPORT_IRQ_NONE;
- }
- /* We will attempt to share interrupt requests since other devices
- * such as sound cards and network cards seem to like using the
- * printer IRQs.
- *
- * When ECP is available we can autoprobe for IRQs.
- * NOTE: If we can autoprobe it, we can register the IRQ.
- */
- static int __devinit parport_irq_probe(struct parport *pb)
- {
- struct parport_pc_private *priv = pb->private_data;
- priv->ctr_writable |= 0x10;
- if (priv->ecr) {
- pb->irq = programmable_irq_support(pb);
- if (pb->irq == PARPORT_IRQ_NONE)
- pb->irq = irq_probe_ECP(pb);
- }
- if ((pb->irq == PARPORT_IRQ_NONE) && priv->ecr &&
- (pb->modes & PARPORT_MODE_EPP))
- pb->irq = irq_probe_EPP(pb);
- clear_epp_timeout(pb);
- if (pb->irq == PARPORT_IRQ_NONE && (pb->modes & PARPORT_MODE_EPP))
- pb->irq = irq_probe_EPP(pb);
- clear_epp_timeout(pb);
- if (pb->irq == PARPORT_IRQ_NONE)
- pb->irq = irq_probe_SPP(pb);
- if (pb->irq == PARPORT_IRQ_NONE)
- pb->irq = get_superio_irq(pb);
- if (pb->irq == PARPORT_IRQ_NONE)
- priv->ctr_writable &= ~0x10;
- return pb->irq;
- }
- /* --- DMA detection -------------------------------------- */
- /* Only if chipset conforms to ECP ISA Interface Standard */
- static int __devinit programmable_dma_support (struct parport *p)
- {
- unsigned char oecr = inb (ECONTROL (p));
- int dma;
- frob_set_mode (p, ECR_CNF);
-
- dma = inb (CONFIGB(p)) & 0x07;
- /* 000: Indicates jumpered 8-bit DMA if read-only.
- 100: Indicates jumpered 16-bit DMA if read-only. */
- if ((dma & 0x03) == 0)
- dma = PARPORT_DMA_NONE;
- ECR_WRITE (p, oecr);
- return dma;
- }
- static int __devinit parport_dma_probe (struct parport *p)
- {
- const struct parport_pc_private *priv = p->private_data;
- if (priv->ecr)
- p->dma = programmable_dma_support(p); /* ask ECP chipset first */
- if (p->dma == PARPORT_DMA_NONE) {
- /* ask known Super-IO chips proper, although these
- claim ECP compatible, some don't report their DMA
- conforming to ECP standards */
- p->dma = get_superio_dma(p);
- }
- return p->dma;
- }
- /* --- Initialisation code -------------------------------- */
- struct parport *parport_pc_probe_port (unsigned long int base,
- unsigned long int base_hi,
- int irq, int dma,
- struct pci_dev *dev)
- {
- struct parport_pc_private *priv;
- struct parport_operations *ops;
- struct parport tmp;
- struct parport *p = &tmp;
- int probedirq = PARPORT_IRQ_NONE;
- if (check_region(base, 3)) return NULL;
- priv = kmalloc (sizeof (struct parport_pc_private), GFP_KERNEL);
- if (!priv) {
- printk (KERN_DEBUG "parport (0x%lx): no memory!n", base);
- return NULL;
- }
- ops = kmalloc (sizeof (struct parport_operations), GFP_KERNEL);
- if (!ops) {
- printk (KERN_DEBUG "parport (0x%lx): no memory for ops!n",
- base);
- kfree (priv);
- return NULL;
- }
- memcpy (ops, &parport_pc_ops, sizeof (struct parport_operations));
- priv->ctr = 0xc;
- priv->ctr_writable = ~0x10;
- priv->ecr = 0;
- priv->fifo_depth = 0;
- priv->dma_buf = 0;
- priv->dma_handle = 0;
- priv->dev = dev;
- p->base = base;
- p->base_hi = base_hi;
- p->irq = irq;
- p->dma = dma;
- p->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_SAFEININT;
- p->ops = ops;
- p->private_data = priv;
- p->physport = p;
- if (base_hi && !check_region(base_hi,3))
- parport_ECR_present(p);
- if (base != 0x3bc) {
- if (!check_region(base+0x3, 5)) {
- if (!parport_EPP_supported(p))
- parport_ECPEPP_supported(p);
- }
- }
- if (!parport_SPP_supported (p)) {
- /* No port. */
- kfree (priv);
- kfree (ops);
- return NULL;
- }
- if (priv->ecr)
- parport_ECPPS2_supported(p);
- else
- parport_PS2_supported (p);
- if (!(p = parport_register_port(base, PARPORT_IRQ_NONE,
- PARPORT_DMA_NONE, ops))) {
- kfree (priv);
- kfree (ops);
- return NULL;
- }
- p->base_hi = base_hi;
- p->modes = tmp.modes;
- p->size = (p->modes & PARPORT_MODE_EPP)?8:3;
- p->private_data = priv;
- printk(KERN_INFO "%s: PC-style at 0x%lx", p->name, p->base);
- if (p->base_hi && priv->ecr)
- printk(" (0x%lx)", p->base_hi);
- p->irq = irq;
- p->dma = dma;
- if (p->irq == PARPORT_IRQ_AUTO) {
- p->irq = PARPORT_IRQ_NONE;
- parport_irq_probe(p);
- } else if (p->irq == PARPORT_IRQ_PROBEONLY) {
- p->irq = PARPORT_IRQ_NONE;
- parport_irq_probe(p);
- probedirq = p->irq;
- p->irq = PARPORT_IRQ_NONE;
- }
- if (p->irq != PARPORT_IRQ_NONE) {
- printk(", irq %d", p->irq);
- if (p->dma == PARPORT_DMA_AUTO) {
- p->dma = PARPORT_DMA_NONE;
- parport_dma_probe(p);
- }
- }
- if (p->dma == PARPORT_DMA_AUTO) /* To use DMA, giving the irq
- is mandatory (see above) */
- p->dma = PARPORT_DMA_NONE;
- #ifdef CONFIG_PARPORT_PC_FIFO
- if (parport_ECP_supported(p) &&
- p->dma != PARPORT_DMA_NOFIFO &&
- priv->fifo_depth > 0 && p->irq != PARPORT_IRQ_NONE) {
- p->modes |= PARPORT_MODE_ECP | PARPORT_MODE_COMPAT;
- p->ops->compat_write_data = parport_pc_compat_write_block_pio;
- #ifdef CONFIG_PARPORT_1284
- p->ops->ecp_write_data = parport_pc_ecp_write_block_pio;
- /* currently broken, but working on it.. (FB) */
- /* p->ops->ecp_read_data = parport_pc_ecp_read_block_pio; */
- #endif /* IEEE 1284 support */
- if (p->dma != PARPORT_DMA_NONE) {
- printk(", dma %d", p->dma);
- p->modes |= PARPORT_MODE_DMA;
- }
- else printk(", using FIFO");
- }
- else
- /* We can't use the DMA channel after all. */
- p->dma = PARPORT_DMA_NONE;
- #endif /* Allowed to use FIFO/DMA */
- printk(" [");
- #define printmode(x) {if(p->modes&PARPORT_MODE_##x){printk("%s%s",f?",":"",#x);f++;}}
- {
- int f = 0;
- printmode(PCSPP);
- printmode(TRISTATE);
- printmode(COMPAT)
- printmode(EPP);
- printmode(ECP);
- printmode(DMA);
- }
- #undef printmode
- #ifndef CONFIG_PARPORT_1284
- printk ("(,...)");
- #endif /* CONFIG_PARPORT_1284 */
- printk("]n");
- if (probedirq != PARPORT_IRQ_NONE)
- printk(KERN_INFO "%s: irq %d detectedn", p->name, probedirq);
- parport_proc_register(p);
- request_region (p->base, 3, p->name);
- if (p->size > 3)
- request_region (p->base + 3, p->size - 3, p->name);
- if (p->modes & PARPORT_MODE_ECP)
- request_region (p->base_hi, 3, p->name);
- if (p->irq != PARPORT_IRQ_NONE) {
- if (request_irq (p->irq, parport_pc_interrupt,
- 0, p->name, p)) {
- printk (KERN_WARNING "%s: irq %d in use, "
- "resorting to polled operationn",
- p->name, p->irq);
- p->irq = PARPORT_IRQ_NONE;
- p->dma = PARPORT_DMA_NONE;
- }
- #ifdef CONFIG_PARPORT_PC_FIFO
- if (p->dma != PARPORT_DMA_NONE) {
- if (request_dma (p->dma, p->name)) {
- printk (KERN_WARNING "%s: dma %d in use, "
- "resorting to PIO operationn",
- p->name, p->dma);
- p->dma = PARPORT_DMA_NONE;
- } else {
- priv->dma_buf =
- pci_alloc_consistent(priv->dev,
- PAGE_SIZE,
- &priv->dma_handle);
- if (! priv->dma_buf) {
- printk (KERN_WARNING "%s: "
- "cannot get buffer for DMA, "
- "resorting to PIO operationn",
- p->name);
- free_dma(p->dma);
- p->dma = PARPORT_DMA_NONE;
- }
- }
- }
- #endif /* CONFIG_PARPORT_PC_FIFO */
- }
- /* Done probing. Now put the port into a sensible start-up state. */
- if (priv->ecr)
- /*
- * Put the ECP detected port in PS2 mode.
- * Do this also for ports that have ECR but don't do ECP.
- */
- ECR_WRITE (p, 0x34);
- parport_pc_write_data(p, 0);
- parport_pc_data_forward (p);
- /* Now that we've told the sharing engine about the port, and
- found out its characteristics, let the high-level drivers
- know about it. */
- parport_announce_port (p);
- return p;
- }
- void parport_pc_unregister_port (struct parport *p)
- {
- struct parport_pc_private *priv = p->private_data;
- struct parport_operations *ops = p->ops;
- if (p->dma != PARPORT_DMA_NONE)
- free_dma(p->dma);
- if (p->irq != PARPORT_IRQ_NONE)
- free_irq(p->irq, p);
- release_region(p->base, 3);
- if (p->size > 3)
- release_region(p->base + 3, p->size - 3);
- if (p->modes & PARPORT_MODE_ECP)
- release_region(p->base_hi, 3);
- parport_proc_unregister(p);
- if (priv->dma_buf)
- pci_free_consistent(priv->dev, PAGE_SIZE,
- priv->dma_buf,
- priv->dma_handle);
- kfree (p->private_data);
- parport_unregister_port(p);
- kfree (ops); /* hope no-one cached it */
- }
- #ifdef CONFIG_PCI
- /* ITE support maintained by Rich Liu <richliu@poorman.org> */
- static int __devinit sio_ite_8872_probe (struct pci_dev *pdev, int autoirq,
- int autodma)
- {
- short inta_addr[6] = { 0x2A0, 0x2C0, 0x220, 0x240, 0x1E0 };
- u32 ite8872set;
- u32 ite8872_lpt, ite8872_lpthi;
- u8 ite8872_irq, type;
- int irq;
- int i;
- DPRINTK (KERN_DEBUG "sio_ite_8872_probe()n");
-
- // make sure which one chip
- for(i = 0; i < 5; i++) {
- if (check_region (inta_addr[i], 0x8) >= 0) {
- int test;
- pci_write_config_dword (pdev, 0x60,
- 0xe7000000 | inta_addr[i]);
- pci_write_config_dword (pdev, 0x78,
- 0x00000000 | inta_addr[i]);
- test = inb (inta_addr[i]);
- if (test != 0xff) break;
- }
- }
- if(i >= 5) {
- printk (KERN_INFO "parport_pc: cannot find ITE8872 INTAn");
- return 0;
- }
- type = inb (inta_addr[i] + 0x18);
- type &= 0x0f;
- switch (type) {
- case 0x2:
- printk (KERN_INFO "parport_pc: ITE8871 found (1P)n");
- ite8872set = 0x64200000;
- break;
- case 0xa:
- printk (KERN_INFO "parport_pc: ITE8875 found (1P)n");
- ite8872set = 0x64200000;
- break;
- case 0xe:
- printk (KERN_INFO "parport_pc: ITE8872 found (2S1P)n");
- ite8872set = 0x64e00000;
- break;
- case 0x6:
- printk (KERN_INFO "parport_pc: ITE8873 found (1S)n");
- return 0;
- case 0x8:
- DPRINTK (KERN_DEBUG "parport_pc: ITE8874 found (2S)n");
- return 0;
- default:
- printk (KERN_INFO "parport_pc: unknown ITE887xn");
- printk (KERN_INFO "parport_pc: please mail 'lspci -nvv' "
- "output to Rich.Liu@ite.com.twn");
- return 0;
- }
- pci_read_config_byte (pdev, 0x3c, &ite8872_irq);
- pci_read_config_dword (pdev, 0x1c, &ite8872_lpt);
- ite8872_lpt &= 0x0000ff00;
- pci_read_config_dword (pdev, 0x20, &ite8872_lpthi);
- ite8872_lpthi &= 0x0000ff00;
- pci_write_config_dword (pdev, 0x6c, 0xe3000000 | ite8872_lpt);
- pci_write_config_dword (pdev, 0x70, 0xe3000000 | ite8872_lpthi);
- pci_write_config_dword (pdev, 0x80, (ite8872_lpthi<<16) | ite8872_lpt);
- // SET SPP&EPP , Parallel Port NO DMA , Enable All Function
- // SET Parallel IRQ
- pci_write_config_dword (pdev, 0x9c,
- ite8872set | (ite8872_irq * 0x11111));
- DPRINTK (KERN_DEBUG "ITE887x: The IRQ is %d.n", ite8872_irq);
- DPRINTK (KERN_DEBUG "ITE887x: The PARALLEL I/O port is 0x%x.n",
- ite8872_lpt);
- DPRINTK (KERN_DEBUG "ITE887x: The PARALLEL I/O porthi is 0x%x.n",
- ite8872_lpthi);
- /* Let the user (or defaults) steer us away from interrupts */
- irq = ite8872_irq;
- if (autoirq != PARPORT_IRQ_AUTO)
- irq = PARPORT_IRQ_NONE;
- if (parport_pc_probe_port (ite8872_lpt, ite8872_lpthi,
- irq, PARPORT_DMA_NONE, NULL)) {
- printk (KERN_INFO
- "parport_pc: ITE 8872 parallel port: io=0x%X",
- ite8872_lpt);
- if (irq != PARPORT_IRQ_NONE)
- printk (", irq=%d", irq);
- printk ("n");
- return 1;
- }
- return 0;
- }
- /* Via support maintained by Jeff Garzik <jgarzik@mandrakesoft.com> */
- static int __devinit sio_via_686a_probe (struct pci_dev *pdev, int autoirq,
- int autodma)
- {
- u8 tmp;
- int dma, irq;
- unsigned port1, port2, have_eppecp;
- /*
- * unlock super i/o configuration, set 0x85_1
- */
- pci_read_config_byte (pdev, 0x85, &tmp);
- tmp |= (1 << 1);
- pci_write_config_byte (pdev, 0x85, tmp);
-
- /*
- * Super I/O configuration, index port == 3f0h, data port == 3f1h
- */
-
- /* 0xE2_1-0: Parallel Port Mode / Enable */
- outb (0xE2, 0x3F0);
- tmp = inb (0x3F1);
-
- if ((tmp & 0x03) == 0x03) {
- printk (KERN_INFO "parport_pc: Via 686A parallel port disabled in BIOSn");
- return 0;
- }
-
- /* 0xE6: Parallel Port I/O Base Address, bits 9-2 */
- outb (0xE6, 0x3F0);
- port1 = inb (0x3F1) << 2;
-
- switch (port1) {
- case 0x3bc: port2 = 0x7bc; break;
- case 0x378: port2 = 0x778; break;
- case 0x278: port2 = 0x678; break;
- default:
- printk (KERN_INFO "parport_pc: Weird Via 686A parport base 0x%X, ignoringn",
- port1);
- return 0;
- }
- /* 0xF0_5: EPP+ECP enable */
- outb (0xF0, 0x3F0);
- have_eppecp = (inb (0x3F1) & (1 << 5));
-
- /*
- * lock super i/o configuration, clear 0x85_1
- */
- pci_read_config_byte (pdev, 0x85, &tmp);
- tmp &= ~(1 << 1);
- pci_write_config_byte (pdev, 0x85, tmp);
- /*
- * Get DMA and IRQ from PCI->ISA bridge PCI config registers
- */
- /* 0x50_3-2: PnP Routing for Parallel Port DRQ */
- pci_read_config_byte (pdev, 0x50, &tmp);
- dma = ((tmp >> 2) & 0x03);
-
- /* 0x51_7-4: PnP Routing for Parallel Port IRQ */
- pci_read_config_byte (pdev, 0x51, &tmp);
- irq = ((tmp >> 4) & 0x0F);
- /* filter bogus IRQs */
- switch (irq) {
- case 0:
- case 2:
- case 8:
- case 13:
- irq = PARPORT_IRQ_NONE;
- break;
- default: /* do nothing */
- break;
- }
- /* if ECP not enabled, DMA is not enabled, assumed bogus 'dma' value */
- if (!have_eppecp)
- dma = PARPORT_DMA_NONE;
- /* Let the user (or defaults) steer us away from interrupts and DMA */
- if (autoirq != PARPORT_IRQ_AUTO) {
- irq = PARPORT_IRQ_NONE;
- dma = PARPORT_DMA_NONE;
- }
- if (autodma != PARPORT_DMA_AUTO)
- dma = PARPORT_DMA_NONE;
- /* finally, do the probe with values obtained */
- if (parport_pc_probe_port (port1, port2, irq, dma, NULL)) {
- printk (KERN_INFO
- "parport_pc: Via 686A parallel port: io=0x%X", port1);
- if (irq != PARPORT_IRQ_NONE)
- printk (", irq=%d", irq);
- if (dma != PARPORT_DMA_NONE)
- printk (", dma=%d", dma);
- printk ("n");
- return 1;
- }
-
- printk (KERN_WARNING "parport_pc: Strange, can't probe Via 686A parallel port: io=0x%X, irq=%d, dma=%dn",
- port1, irq, dma);
- return 0;
- }
- enum parport_pc_sio_types {
- sio_via_686a = 0, /* Via VT82C686A motherboard Super I/O */
- sio_ite_8872,
- last_sio
- };
- /* each element directly indexed from enum list, above */
- static struct parport_pc_superio {
- int (*probe) (struct pci_dev *pdev, int autoirq, int autodma);
- } parport_pc_superio_info[] __devinitdata = {
- { sio_via_686a_probe, },
- { sio_ite_8872_probe, },
- };
- enum parport_pc_pci_cards {
- siig_1s1p_10x_550 = last_sio,
- siig_1s1p_10x_650,
- siig_1s1p_10x_850,
- siig_1p_10x,
- siig_2p_10x,
- siig_2s1p_10x_550,
- siig_2s1p_10x_650,
- siig_2s1p_10x_850,
- siig_1p_20x,
- siig_2p_20x,
- siig_2p1s_20x_550,
- siig_2p1s_20x_650,
- siig_2p1s_20x_850,
- siig_1s1p_20x_550,
- siig_1s1p_20x_650,
- siig_1s1p_20x_850,
- siig_2s1p_20x_550,
- siig_2s1p_20x_650,
- siig_2s1p_20x_850,
- lava_parallel,
- lava_parallel_dual_a,
- lava_parallel_dual_b,
- boca_ioppar,
- plx_9050,
- timedia_4078a,
- timedia_4079h,
- timedia_4085h,
- timedia_4088a,
- timedia_4089a,
- timedia_4095a,
- timedia_4096a,
- timedia_4078u,
- timedia_4079a,
- timedia_4085u,
- timedia_4079r,
- timedia_4079s,
- timedia_4079d,
- timedia_4079e,
- timedia_4079f,
- timedia_9079a,
- timedia_9079b,
- timedia_9079c,
- timedia_4006a,
- timedia_4014,
- timedia_4008a,
- timedia_4018,
- timedia_9018a,
- syba_2p_epp,
- syba_1p_ecp,
- titan_010l,
- titan_1284p2,
- avlab_1p,
- avlab_2p,
- oxsemi_954,
- oxsemi_840,
- aks_0100,
- };
- /* each element directly indexed from enum list, above
- * (but offset by last_sio) */
- static struct parport_pc_pci {
- int numports;
- struct { /* BAR (base address registers) numbers in the config
- space header */
- int lo;
- int hi; /* -1 if not there, >6 for offset-method (max
- BAR is 6) */
- } addr[4];
- } cards[] __devinitdata = {
- /* siig_1s1p_10x_550 */ { 1, { { 3, 4 }, } },
- /* siig_1s1p_10x_650 */ { 1, { { 3, 4 }, } },
- /* siig_1s1p_10x_850 */ { 1, { { 3, 4 }, } },
- /* siig_1p_10x */ { 1, { { 2, 3 }, } },
- /* siig_2p_10x */ { 2, { { 2, 3 }, { 4, 5 }, } },
- /* siig_2s1p_10x_550 */ { 1, { { 4, 5 }, } },
- /* siig_2s1p_10x_650 */ { 1, { { 4, 5 }, } },
- /* siig_2s1p_10x_850 */ { 1, { { 4, 5 }, } },
- /* siig_1p_20x */ { 1, { { 0, 1 }, } },
- /* siig_2p_20x */ { 2, { { 0, 1 }, { 2, 3 }, } },
- /* siig_2p1s_20x_550 */ { 2, { { 1, 2 }, { 3, 4 }, } },
- /* siig_2p1s_20x_650 */ { 2, { { 1, 2 }, { 3, 4 }, } },
- /* siig_2p1s_20x_850 */ { 2, { { 1, 2 }, { 3, 4 }, } },
- /* siig_1s1p_20x_550 */ { 1, { { 1, 2 }, } },
- /* siig_1s1p_20x_650 */ { 1, { { 1, 2 }, } },
- /* siig_1s1p_20x_850 */ { 1, { { 1, 2 }, } },
- /* siig_2s1p_20x_550 */ { 1, { { 2, 3 }, } },
- /* siig_2s1p_20x_650 */ { 1, { { 2, 3 }, } },
- /* siig_2s1p_20x_850 */ { 1, { { 2, 3 }, } },
- /* lava_parallel */ { 1, { { 0, -1 }, } },
- /* lava_parallel_dual_a */ { 1, { { 0, -1 }, } },
- /* lava_parallel_dual_b */ { 1, { { 0, -1 }, } },
- /* boca_ioppar */ { 1, { { 0, -1 }, } },
- /* plx_9050 */ { 2, { { 4, -1 }, { 5, -1 }, } },
- /* timedia_4078a */ { 1, { { 2, -1 }, } },
- /* timedia_4079h */ { 1, { { 2, 3 }, } },
- /* timedia_4085h */ { 2, { { 2, -1 }, { 4, -1 }, } },
- /* timedia_4088a */ { 2, { { 2, 3 }, { 4, 5 }, } },
- /* timedia_4089a */ { 2, { { 2, 3 }, { 4, 5 }, } },
- /* timedia_4095a */ { 2, { { 2, 3 }, { 4, 5 }, } },
- /* timedia_4096a */ { 2, { { 2, 3 }, { 4, 5 }, } },
- /* timedia_4078u */ { 1, { { 2, -1 }, } },
- /* timedia_4079a */ { 1, { { 2, 3 }, } },
- /* timedia_4085u */ { 2, { { 2, -1 }, { 4, -1 }, } },
- /* timedia_4079r */ { 1, { { 2, 3 }, } },
- /* timedia_4079s */ { 1, { { 2, 3 }, } },
- /* timedia_4079d */ { 1, { { 2, 3 }, } },
- /* timedia_4079e */ { 1, { { 2, 3 }, } },
- /* timedia_4079f */ { 1, { { 2, 3 }, } },
- /* timedia_9079a */ { 1, { { 2, 3 }, } },
- /* timedia_9079b */ { 1, { { 2, 3 }, } },
- /* timedia_9079c */ { 1, { { 2, 3 }, } },
- /* timedia_4006a */ { 1, { { 0, -1 }, } },
- /* timedia_4014 */ { 2, { { 0, -1 }, { 2, -1 }, } },
- /* timedia_4008a */ { 1, { { 0, 1 }, } },
- /* timedia_4018 */ { 2, { { 0, 1 }, { 2, 3 }, } },
- /* timedia_9018a */ { 2, { { 0, 1 }, { 2, 3 }, } },
- /* SYBA uses fixed offsets in
- a 1K io window */
- /* syba_2p_epp AP138B */ { 2, { { 0, 0x078 }, { 0, 0x178 }, } },
- /* syba_1p_ecp W83787 */ { 1, { { 0, 0x078 }, } },
- /* titan_010l */ { 1, { { 3, -1 }, } },
- /* titan_1284p2 */ { 2, { { 0, 1 }, { 2, 3 }, } },
- /* avlab_1p */ { 1, { { 0, 1}, } },
- /* avlab_2p */ { 2, { { 0, 1}, { 2, 3 },} },
- /* The Oxford Semi cards are unusual: 954 doesn't support ECP,
- * and 840 locks up if you write 1 to bit 2! */
- /* oxsemi_954 */ { 1, { { 0, -1 }, } },
- /* oxsemi_840 */ { 1, { { 0, -1 }, } },
- /* aks_0100 */ { 1, { { 0, 1 }, } },
- };
- static struct pci_device_id parport_pc_pci_tbl[] __devinitdata = {
- /* Super-IO onboard chips */
- { 0x1106, 0x0686, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_via_686a },
- { PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_8872,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_ite_8872 },
- /* PCI cards */
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x_550 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x_650 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_10x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_10x_850 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1P_10x,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1p_10x },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P_10x,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p_10x },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x_550 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x_650 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_10x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_10x_850 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1P_20x,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1p_20x },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P_20x,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p_20x },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x_550 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x_650 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2P1S_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2p1s_20x_850 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x_550 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x_650 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_1S1P_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_1s1p_20x_850 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_550,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x_550 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_650,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x_650 },
- { PCI_VENDOR_ID_SIIG, PCI_DEVICE_ID_SIIG_2S1P_20x_850,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, siig_2s1p_20x_850 },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_PARALLEL,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_DUAL_PAR_A,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel_dual_a },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_DUAL_PAR_B,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, lava_parallel_dual_b },
- { PCI_VENDOR_ID_LAVA, PCI_DEVICE_ID_LAVA_BOCA_IOPPAR,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, boca_ioppar },
- { PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
- PCI_SUBVENDOR_ID_EXSYS, PCI_SUBDEVICE_ID_EXSYS_4014, 0,0, plx_9050 },
- /* PCI_VENDOR_ID_TIMEDIA/SUNIX has many differing cards ...*/
- { 0x1409, 0x7168, 0x1409, 0x4078, 0, 0, timedia_4078a },
- { 0x1409, 0x7168, 0x1409, 0x4079, 0, 0, timedia_4079h },
- { 0x1409, 0x7168, 0x1409, 0x4085, 0, 0, timedia_4085h },
- { 0x1409, 0x7168, 0x1409, 0x4088, 0, 0, timedia_4088a },
- { 0x1409, 0x7168, 0x1409, 0x4089, 0, 0, timedia_4089a },
- { 0x1409, 0x7168, 0x1409, 0x4095, 0, 0, timedia_4095a },
- { 0x1409, 0x7168, 0x1409, 0x4096, 0, 0, timedia_4096a },
- { 0x1409, 0x7168, 0x1409, 0x5078, 0, 0, timedia_4078u },
- { 0x1409, 0x7168, 0x1409, 0x5079, 0, 0, timedia_4079a },
- { 0x1409, 0x7168, 0x1409, 0x5085, 0, 0, timedia_4085u },
- { 0x1409, 0x7168, 0x1409, 0x6079, 0, 0, timedia_4079r },
- { 0x1409, 0x7168, 0x1409, 0x7079, 0, 0, timedia_4079s },
- { 0x1409, 0x7168, 0x1409, 0x8079, 0, 0, timedia_4079d },
- { 0x1409, 0x7168, 0x1409, 0x9079, 0, 0, timedia_4079e },
- { 0x1409, 0x7168, 0x1409, 0xa079, 0, 0, timedia_4079f },
- { 0x1409, 0x7168, 0x1409, 0xb079, 0, 0, timedia_9079a },
- { 0x1409, 0x7168, 0x1409, 0xc079, 0, 0, timedia_9079b },
- { 0x1409, 0x7168, 0x1409, 0xd079, 0, 0, timedia_9079c },
- { 0x1409, 0x7268, 0x1409, 0x0101, 0, 0, timedia_4006a },
- { 0x1409, 0x7268, 0x1409, 0x0102, 0, 0, timedia_4014 },
- { 0x1409, 0x7268, 0x1409, 0x0103, 0, 0, timedia_4008a },
- { 0x1409, 0x7268, 0x1409, 0x0104, 0, 0, timedia_4018 },
- { 0x1409, 0x7268, 0x1409, 0x9018, 0, 0, timedia_9018a },
- { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_2P_EPP,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_2p_epp },
- { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_1P_ECP,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_1p_ecp },
- { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_010L,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_010l },
- { 0x9710, 0x9815, 0x1000, 0x0020, 0, 0, titan_1284p2 },
- /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/
- { 0x14db, 0x2120, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1p}, /* AFAVLAB_TK9902 */
- { 0x14db, 0x2121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2p},
- { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI954PP,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_954 },
- { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_12PCI840,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_840 },
- { PCI_VENDOR_ID_AKS, PCI_DEVICE_ID_AKS_ALADDINCARD,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, aks_0100 },
- { 0, } /* terminate list */
- };
- MODULE_DEVICE_TABLE(pci,parport_pc_pci_tbl);
- static int __devinit parport_pc_pci_probe (struct pci_dev *dev,
- const struct pci_device_id *id)
- {
- int err, count, n, i = id->driver_data;
- if (i < last_sio)
- /* This is an onboard Super-IO and has already been probed */
- return 0;
- /* This is a PCI card */
- i -= last_sio;
- count = 0;
- if ((err = pci_enable_device (dev)) != 0)
- return err;
- for (n = 0; n < cards[i].numports; n++) {
- int lo = cards[i].addr[n].lo;
- int hi = cards[i].addr[n].hi;
- unsigned long io_lo, io_hi;
- io_lo = pci_resource_start (dev, lo);
- io_hi = 0;
- if ((hi >= 0) && (hi <= 6))
- io_hi = pci_resource_start (dev, hi);
- else if (hi > 6)
- io_lo += hi; /* Reinterpret the meaning of
- "hi" as an offset (see SYBA
- def.) */
- /* TODO: test if sharing interrupts works */
- printk (KERN_DEBUG "PCI parallel port detected: %04x:%04x, "
- "I/O at %#lx(%#lx)n",
- parport_pc_pci_tbl[i + last_sio].vendor,
- parport_pc_pci_tbl[i + last_sio].device, io_lo, io_hi);
- if (parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
- PARPORT_DMA_NONE, dev))
- count++;
- }
- return count == 0 ? -ENODEV : 0;
- }
- static struct pci_driver parport_pc_pci_driver = {
- name: "parport_pc",
- id_table: parport_pc_pci_tbl,
- probe: parport_pc_pci_probe,
- };
- static int __init parport_pc_init_superio (int autoirq, int autodma)
- {
- const struct pci_device_id *id;
- struct pci_dev *pdev;
- int ret = 0;
- pci_for_each_dev(pdev) {
- id = pci_match_device (parport_pc_pci_tbl, pdev);
- if (id == NULL || id->driver_data >= last_sio)
- continue;
- if (parport_pc_superio_info[id->driver_data].probe
- (pdev, autoirq, autodma)) {
- ret++;
- }
- }
- return ret; /* number of devices found */
- }
- #else
- static struct pci_driver parport_pc_pci_driver;
- static int __init parport_pc_init_superio(int autoirq, int autodma) {return 0;}
- #endif /* CONFIG_PCI */
- /* This is called by parport_pc_find_nonpci_ports (in asm/parport.h) */
- static int __init __attribute__((unused))
- parport_pc_find_isa_ports (int autoirq, int autodma)
- {
- int count = 0;
- if (parport_pc_probe_port(0x3bc, 0x7bc, autoirq, autodma, NULL))
- count++;
- if (parport_pc_probe_port(0x378, 0x778, autoirq, autodma, NULL))
- count++;
- if (parport_pc_probe_port(0x278, 0x678, autoirq, autodma, NULL))
- count++;
- return count;
- }
- /* This function is called by parport_pc_init if the user didn't
- * specify any ports to probe. Its job is to find some ports. Order
- * is important here -- we want ISA ports to be registered first,
- * followed by PCI cards (for least surprise), but before that we want
- * to do chipset-specific tests for some onboard ports that we know
- * about.
- *
- * autoirq is PARPORT_IRQ_NONE, PARPORT_IRQ_AUTO, or PARPORT_IRQ_PROBEONLY
- * autodma is PARPORT_DMA_NONE or PARPORT_DMA_AUTO
- */
- static int __init parport_pc_find_ports (int autoirq, int autodma)
- {
- int count = 0, r;
- #ifdef CONFIG_PARPORT_PC_SUPERIO
- detect_and_report_winbond ();
- detect_and_report_smsc ();
- #endif
- /* Onboard SuperIO chipsets that show themselves on the PCI bus. */
- count += parport_pc_init_superio (autoirq, autodma);
- /* ISA ports and whatever (see asm/parport.h). */
- count += parport_pc_find_nonpci_ports (autoirq, autodma);
- r = pci_register_driver (&parport_pc_pci_driver);
- if (r >= 0) {
- registered_parport = 1;
- count += r;
- }
- return count;
- }
- int __init parport_pc_init (int *io, int *io_hi, int *irq, int *dma)
- {
- int count = 0, i = 0;
- if (io && *io) {
- /* Only probe the ports we were given. */
- user_specified = 1;
- do {
- if ((*io_hi) == PARPORT_IOHI_AUTO)
- *io_hi = 0x400 + *io;
- if (parport_pc_probe_port(*(io++), *(io_hi++),
- *(irq++), *(dma++), NULL))
- count++;
- } while (*io && (++i < PARPORT_PC_MAX_PORTS));
- } else {
- count += parport_pc_find_ports (irq[0], dma[0]);
- }
- return count;
- }
- /* Exported symbols. */
- EXPORT_SYMBOL (parport_pc_probe_port);
- EXPORT_SYMBOL (parport_pc_unregister_port);
- #ifdef MODULE
- static int io[PARPORT_PC_MAX_PORTS+1] = { [0 ... PARPORT_PC_MAX_PORTS] = 0 };
- static int io_hi[PARPORT_PC_MAX_PORTS+1] =
- { [0 ... PARPORT_PC_MAX_PORTS] = PARPORT_IOHI_AUTO };
- static int dmaval[PARPORT_PC_MAX_PORTS] = { [0 ... PARPORT_PC_MAX_PORTS-1] = PARPORT_DMA_NONE };
- static int irqval[PARPORT_PC_MAX_PORTS] = { [0 ... PARPORT_PC_MAX_PORTS-1] = PARPORT_IRQ_PROBEONLY };
- static const char *irq[PARPORT_PC_MAX_PORTS] = { NULL, };
- static const char *dma[PARPORT_PC_MAX_PORTS] = { NULL, };
- MODULE_AUTHOR("Phil Blundell, Tim Waugh, others");
- MODULE_DESCRIPTION("PC-style parallel port driver");
- MODULE_LICENSE("GPL");
- MODULE_PARM_DESC(io, "Base I/O address (SPP regs)");
- MODULE_PARM(io, "1-" __MODULE_STRING(PARPORT_PC_MAX_PORTS) "i");
- MODULE_PARM_DESC(io_hi, "Base I/O address (ECR)");
- MODULE_PARM(io_hi, "1-" __MODULE_STRING(PARPORT_PC_MAX_PORTS) "i");
- MODULE_PARM_DESC(irq, "IRQ line");
- MODULE_PARM(irq, "1-" __MODULE_STRING(PARPORT_PC_MAX_PORTS) "s");
- MODULE_PARM_DESC(dma, "DMA channel");
- MODULE_PARM(dma, "1-" __MODULE_STRING(PARPORT_PC_MAX_PORTS) "s");
- #if defined(CONFIG_PARPORT_PC_FIFO) || defined(CONFIG_PARPORT_PC_SUPERIO)
- MODULE_PARM_DESC(verbose_probing, "Log chit-chat during initialisation");
- MODULE_PARM(verbose_probing, "i");
- #endif
- int init_module(void)
- {
- /* Work out how many ports we have, then get parport_share to parse
- the irq values. */
- unsigned int i;
- int ret;
- for (i = 0; i < PARPORT_PC_MAX_PORTS && io[i]; i++);
- if (i) {
- if (parport_parse_irqs(i, irq, irqval)) return 1;
- if (parport_parse_dmas(i, dma, dmaval)) return 1;
- }
- else {
- /* The user can make us use any IRQs or DMAs we find. */
- int val;
- if (irq[0] && !parport_parse_irqs (1, irq, &val))
- switch (val) {
- case PARPORT_IRQ_NONE:
- case PARPORT_IRQ_AUTO:
- irqval[0] = val;
- break;
- default:
- printk (KERN_WARNING
- "parport_pc: irq specified "
- "without base address. Use 'io=' "
- "to specify onen");
- }
- if (dma[0] && !parport_parse_dmas (1, dma, &val))
- switch (val) {
- case PARPORT_DMA_NONE:
- case PARPORT_DMA_AUTO:
- dmaval[0] = val;
- break;
- default:
- printk (KERN_WARNING
- "parport_pc: dma specified "
- "without base address. Use 'io=' "
- "to specify onen");
- }
- }
- ret = !parport_pc_init (io, io_hi, irqval, dmaval);
- if (ret && registered_parport)
- pci_unregister_driver (&parport_pc_pci_driver);
- return ret;
- }
- void cleanup_module(void)
- {
- /* We ought to keep track of which ports are actually ours. */
- struct parport *p = parport_enumerate(), *tmp;
- if (!user_specified)
- pci_unregister_driver (&parport_pc_pci_driver);
- while (p) {
- tmp = p->next;
- if (p->modes & PARPORT_MODE_PCSPP)
- parport_pc_unregister_port (p);
- p = tmp;
- }
- }
- #endif