3428 lines
92 KiB
C
3428 lines
92 KiB
C
/* Low-level parallel-port routines for 8255-based PC-style hardware.
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*
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* Authors: Phil Blundell <philb@gnu.org>
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* Tim Waugh <tim@cyberelk.demon.co.uk>
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* Jose Renau <renau@acm.org>
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* David Campbell
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* Andrea Arcangeli
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*
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* based on work by Grant Guenther <grant@torque.net> and Phil Blundell.
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*
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* Cleaned up include files - Russell King <linux@arm.uk.linux.org>
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* DMA support - Bert De Jonghe <bert@sophis.be>
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* Many ECP bugs fixed. Fred Barnes & Jamie Lokier, 1999
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* More PCI support now conditional on CONFIG_PCI, 03/2001, Paul G.
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* Various hacks, Fred Barnes, 04/2001
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* Updated probing logic - Adam Belay <ambx1@neo.rr.com>
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*/
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/* This driver should work with any hardware that is broadly compatible
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* with that in the IBM PC. This applies to the majority of integrated
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* I/O chipsets that are commonly available. The expected register
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* layout is:
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*
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* base+0 data
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* base+1 status
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* base+2 control
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*
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* In addition, there are some optional registers:
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*
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* base+3 EPP address
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* base+4 EPP data
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* base+0x400 ECP config A
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* base+0x401 ECP config B
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* base+0x402 ECP control
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*
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* All registers are 8 bits wide and read/write. If your hardware differs
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* only in register addresses (eg because your registers are on 32-bit
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* word boundaries) then you can alter the constants in parport_pc.h to
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* accommodate this.
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*
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* Note that the ECP registers may not start at offset 0x400 for PCI cards,
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* but rather will start at port->base_hi.
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/pci.h>
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#include <linux/pnp.h>
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#include <linux/sysctl.h>
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#include <asm/io.h>
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#include <asm/dma.h>
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#include <asm/uaccess.h>
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#include <linux/parport.h>
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#include <linux/parport_pc.h>
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#include <linux/via.h>
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#include <asm/parport.h>
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#define PARPORT_PC_MAX_PORTS PARPORT_MAX
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#ifdef CONFIG_ISA_DMA_API
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#define HAS_DMA
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#endif
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/* ECR modes */
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#define ECR_SPP 00
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#define ECR_PS2 01
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#define ECR_PPF 02
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#define ECR_ECP 03
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#define ECR_EPP 04
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#define ECR_VND 05
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#define ECR_TST 06
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#define ECR_CNF 07
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#define ECR_MODE_MASK 0xe0
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#define ECR_WRITE(p,v) frob_econtrol((p),0xff,(v))
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#undef DEBUG
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#ifdef DEBUG
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#define DPRINTK printk
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#else
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#define DPRINTK(stuff...)
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#endif
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#define NR_SUPERIOS 3
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static struct superio_struct { /* For Super-IO chips autodetection */
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int io;
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int irq;
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int dma;
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} superios[NR_SUPERIOS] = { {0,},};
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static int user_specified;
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#if defined(CONFIG_PARPORT_PC_SUPERIO) || \
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(defined(CONFIG_PARPORT_1284) && defined(CONFIG_PARPORT_PC_FIFO))
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static int verbose_probing;
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#endif
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static int pci_registered_parport;
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static int pnp_registered_parport;
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/* frob_control, but for ECR */
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static void frob_econtrol (struct parport *pb, unsigned char m,
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unsigned char v)
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{
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unsigned char ectr = 0;
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if (m != 0xff)
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ectr = inb (ECONTROL (pb));
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DPRINTK (KERN_DEBUG "frob_econtrol(%02x,%02x): %02x -> %02x\n",
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m, v, ectr, (ectr & ~m) ^ v);
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outb ((ectr & ~m) ^ v, ECONTROL (pb));
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}
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static __inline__ void frob_set_mode (struct parport *p, int mode)
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{
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frob_econtrol (p, ECR_MODE_MASK, mode << 5);
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}
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#ifdef CONFIG_PARPORT_PC_FIFO
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/* Safely change the mode bits in the ECR
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Returns:
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0 : Success
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-EBUSY: Could not drain FIFO in some finite amount of time,
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mode not changed!
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*/
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static int change_mode(struct parport *p, int m)
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{
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const struct parport_pc_private *priv = p->physport->private_data;
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unsigned char oecr;
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int mode;
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DPRINTK(KERN_INFO "parport change_mode ECP-ISA to mode 0x%02x\n",m);
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if (!priv->ecr) {
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printk (KERN_DEBUG "change_mode: but there's no ECR!\n");
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return 0;
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}
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/* Bits <7:5> contain the mode. */
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oecr = inb (ECONTROL (p));
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mode = (oecr >> 5) & 0x7;
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if (mode == m) return 0;
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if (mode >= 2 && !(priv->ctr & 0x20)) {
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/* This mode resets the FIFO, so we may
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* have to wait for it to drain first. */
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unsigned long expire = jiffies + p->physport->cad->timeout;
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int counter;
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switch (mode) {
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case ECR_PPF: /* Parallel Port FIFO mode */
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case ECR_ECP: /* ECP Parallel Port mode */
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/* Busy wait for 200us */
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for (counter = 0; counter < 40; counter++) {
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if (inb (ECONTROL (p)) & 0x01)
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break;
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if (signal_pending (current)) break;
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udelay (5);
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}
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/* Poll slowly. */
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while (!(inb (ECONTROL (p)) & 0x01)) {
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if (time_after_eq (jiffies, expire))
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/* The FIFO is stuck. */
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return -EBUSY;
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schedule_timeout_interruptible(msecs_to_jiffies(10));
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if (signal_pending (current))
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break;
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}
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}
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}
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if (mode >= 2 && m >= 2) {
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/* We have to go through mode 001 */
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oecr &= ~(7 << 5);
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oecr |= ECR_PS2 << 5;
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ECR_WRITE (p, oecr);
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}
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/* Set the mode. */
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oecr &= ~(7 << 5);
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oecr |= m << 5;
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ECR_WRITE (p, oecr);
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return 0;
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}
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#ifdef CONFIG_PARPORT_1284
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/* Find FIFO lossage; FIFO is reset */
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#if 0
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static int get_fifo_residue (struct parport *p)
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{
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int residue;
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int cnfga;
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const struct parport_pc_private *priv = p->physport->private_data;
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/* Adjust for the contents of the FIFO. */
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for (residue = priv->fifo_depth; ; residue--) {
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if (inb (ECONTROL (p)) & 0x2)
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/* Full up. */
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break;
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outb (0, FIFO (p));
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}
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printk (KERN_DEBUG "%s: %d PWords were left in FIFO\n", p->name,
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residue);
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/* Reset the FIFO. */
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frob_set_mode (p, ECR_PS2);
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/* Now change to config mode and clean up. FIXME */
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frob_set_mode (p, ECR_CNF);
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cnfga = inb (CONFIGA (p));
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printk (KERN_DEBUG "%s: cnfgA contains 0x%02x\n", p->name, cnfga);
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if (!(cnfga & (1<<2))) {
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printk (KERN_DEBUG "%s: Accounting for extra byte\n", p->name);
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residue++;
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}
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/* Don't care about partial PWords until support is added for
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* PWord != 1 byte. */
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/* Back to PS2 mode. */
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frob_set_mode (p, ECR_PS2);
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DPRINTK (KERN_DEBUG "*** get_fifo_residue: done residue collecting (ecr = 0x%2.2x)\n", inb (ECONTROL (p)));
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return residue;
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}
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#endif /* 0 */
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#endif /* IEEE 1284 support */
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#endif /* FIFO support */
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/*
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* Clear TIMEOUT BIT in EPP MODE
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*
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* This is also used in SPP detection.
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*/
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static int clear_epp_timeout(struct parport *pb)
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{
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unsigned char r;
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if (!(parport_pc_read_status(pb) & 0x01))
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return 1;
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/* To clear timeout some chips require double read */
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parport_pc_read_status(pb);
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r = parport_pc_read_status(pb);
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outb (r | 0x01, STATUS (pb)); /* Some reset by writing 1 */
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outb (r & 0xfe, STATUS (pb)); /* Others by writing 0 */
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r = parport_pc_read_status(pb);
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return !(r & 0x01);
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}
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/*
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* Access functions.
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*
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* Most of these aren't static because they may be used by the
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* parport_xxx_yyy macros. extern __inline__ versions of several
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* of these are in parport_pc.h.
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*/
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static irqreturn_t parport_pc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
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{
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parport_generic_irq(irq, (struct parport *) dev_id, regs);
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/* FIXME! Was it really ours? */
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return IRQ_HANDLED;
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}
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static void parport_pc_init_state(struct pardevice *dev, struct parport_state *s)
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{
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s->u.pc.ctr = 0xc;
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if (dev->irq_func &&
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dev->port->irq != PARPORT_IRQ_NONE)
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/* Set ackIntEn */
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s->u.pc.ctr |= 0x10;
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s->u.pc.ecr = 0x34; /* NetMos chip can cause problems 0x24;
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* D.Gruszka VScom */
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}
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static void parport_pc_save_state(struct parport *p, struct parport_state *s)
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{
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const struct parport_pc_private *priv = p->physport->private_data;
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s->u.pc.ctr = priv->ctr;
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if (priv->ecr)
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s->u.pc.ecr = inb (ECONTROL (p));
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}
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static void parport_pc_restore_state(struct parport *p, struct parport_state *s)
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{
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struct parport_pc_private *priv = p->physport->private_data;
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register unsigned char c = s->u.pc.ctr & priv->ctr_writable;
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outb (c, CONTROL (p));
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priv->ctr = c;
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if (priv->ecr)
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ECR_WRITE (p, s->u.pc.ecr);
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}
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#ifdef CONFIG_PARPORT_1284
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static size_t parport_pc_epp_read_data (struct parport *port, void *buf,
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size_t length, int flags)
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{
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size_t got = 0;
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if (flags & PARPORT_W91284PIC) {
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unsigned char status;
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size_t left = length;
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/* use knowledge about data lines..:
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* nFault is 0 if there is at least 1 byte in the Warp's FIFO
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* pError is 1 if there are 16 bytes in the Warp's FIFO
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*/
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status = inb (STATUS (port));
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while (!(status & 0x08) && (got < length)) {
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if ((left >= 16) && (status & 0x20) && !(status & 0x08)) {
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/* can grab 16 bytes from warp fifo */
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if (!((long)buf & 0x03)) {
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insl (EPPDATA (port), buf, 4);
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} else {
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insb (EPPDATA (port), buf, 16);
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}
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buf += 16;
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got += 16;
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left -= 16;
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} else {
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/* grab single byte from the warp fifo */
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*((char *)buf) = inb (EPPDATA (port));
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buf++;
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got++;
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left--;
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}
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status = inb (STATUS (port));
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if (status & 0x01) {
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/* EPP timeout should never occur... */
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printk (KERN_DEBUG "%s: EPP timeout occurred while talking to "
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"w91284pic (should not have done)\n", port->name);
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clear_epp_timeout (port);
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}
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}
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return got;
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}
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if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
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if (!(((long)buf | length) & 0x03)) {
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insl (EPPDATA (port), buf, (length >> 2));
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} else {
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insb (EPPDATA (port), buf, length);
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}
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if (inb (STATUS (port)) & 0x01) {
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clear_epp_timeout (port);
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return -EIO;
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}
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return length;
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}
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for (; got < length; got++) {
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*((char*)buf) = inb (EPPDATA(port));
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buf++;
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if (inb (STATUS (port)) & 0x01) {
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/* EPP timeout */
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clear_epp_timeout (port);
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break;
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}
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}
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return got;
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}
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static size_t parport_pc_epp_write_data (struct parport *port, const void *buf,
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size_t length, int flags)
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{
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size_t written = 0;
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if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
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if (!(((long)buf | length) & 0x03)) {
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outsl (EPPDATA (port), buf, (length >> 2));
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} else {
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outsb (EPPDATA (port), buf, length);
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}
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if (inb (STATUS (port)) & 0x01) {
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clear_epp_timeout (port);
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return -EIO;
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}
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return length;
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}
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for (; written < length; written++) {
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outb (*((char*)buf), EPPDATA(port));
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buf++;
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if (inb (STATUS(port)) & 0x01) {
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clear_epp_timeout (port);
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break;
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}
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}
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return written;
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}
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static size_t parport_pc_epp_read_addr (struct parport *port, void *buf,
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size_t length, int flags)
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{
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size_t got = 0;
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if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
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insb (EPPADDR (port), buf, length);
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if (inb (STATUS (port)) & 0x01) {
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clear_epp_timeout (port);
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return -EIO;
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}
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return length;
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}
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for (; got < length; got++) {
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*((char*)buf) = inb (EPPADDR (port));
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buf++;
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if (inb (STATUS (port)) & 0x01) {
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clear_epp_timeout (port);
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break;
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}
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}
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return got;
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}
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static size_t parport_pc_epp_write_addr (struct parport *port,
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const void *buf, size_t length,
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int flags)
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{
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size_t written = 0;
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if ((flags & PARPORT_EPP_FAST) && (length > 1)) {
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outsb (EPPADDR (port), buf, length);
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if (inb (STATUS (port)) & 0x01) {
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clear_epp_timeout (port);
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return -EIO;
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}
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return length;
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}
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for (; written < length; written++) {
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outb (*((char*)buf), EPPADDR (port));
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buf++;
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if (inb (STATUS (port)) & 0x01) {
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clear_epp_timeout (port);
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break;
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}
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}
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return written;
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}
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static size_t parport_pc_ecpepp_read_data (struct parport *port, void *buf,
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size_t length, int flags)
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{
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size_t got;
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frob_set_mode (port, ECR_EPP);
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parport_pc_data_reverse (port);
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parport_pc_write_control (port, 0x4);
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got = parport_pc_epp_read_data (port, buf, length, flags);
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frob_set_mode (port, ECR_PS2);
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return got;
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}
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static size_t parport_pc_ecpepp_write_data (struct parport *port,
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const void *buf, size_t length,
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int flags)
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{
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size_t written;
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frob_set_mode (port, ECR_EPP);
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parport_pc_write_control (port, 0x4);
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parport_pc_data_forward (port);
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written = parport_pc_epp_write_data (port, buf, length, flags);
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frob_set_mode (port, ECR_PS2);
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return written;
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}
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static size_t parport_pc_ecpepp_read_addr (struct parport *port, void *buf,
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size_t length, int flags)
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{
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size_t got;
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frob_set_mode (port, ECR_EPP);
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parport_pc_data_reverse (port);
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parport_pc_write_control (port, 0x4);
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got = parport_pc_epp_read_addr (port, buf, length, flags);
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frob_set_mode (port, ECR_PS2);
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return got;
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}
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|
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static size_t parport_pc_ecpepp_write_addr (struct parport *port,
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const void *buf, size_t length,
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int flags)
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{
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size_t written;
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|
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frob_set_mode (port, ECR_EPP);
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parport_pc_write_control (port, 0x4);
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parport_pc_data_forward (port);
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written = parport_pc_epp_write_addr (port, buf, length, flags);
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frob_set_mode (port, ECR_PS2);
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|
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return written;
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}
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#endif /* IEEE 1284 support */
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|
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#ifdef CONFIG_PARPORT_PC_FIFO
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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;
|
|
unsigned 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 (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 port\n");
|
|
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 out\n");
|
|
break;
|
|
}
|
|
ecrval = inb (ECONTROL (port));
|
|
if (!(ecrval & (1<<2))) {
|
|
if (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;
|
|
}
|
|
|
|
#ifdef HAS_DMA
|
|
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) {
|
|
unsigned 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 out\n");
|
|
break;
|
|
}
|
|
/* Is serviceIntr set? */
|
|
if (!(inb (ECONTROL (port)) & (1<<2))) {
|
|
cond_resched();
|
|
|
|
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);
|
|
|
|
cond_resched(); /* Can't yield the port. */
|
|
|
|
/* Anyone else waiting for the port? */
|
|
if (port->waithead) {
|
|
printk (KERN_DEBUG "Somebody wants the port\n");
|
|
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;
|
|
}
|
|
#endif
|
|
|
|
static inline size_t parport_pc_fifo_write_block(struct parport *port,
|
|
const void *buf, size_t length)
|
|
{
|
|
#ifdef HAS_DMA
|
|
if (port->dma != PARPORT_DMA_NONE)
|
|
return parport_pc_fifo_write_block_dma (port, buf, length);
|
|
#endif
|
|
return parport_pc_fifo_write_block_pio (port, buf, length);
|
|
}
|
|
|
|
/* Parallel Port FIFO mode (ECP chipsets) */
|
|
static size_t parport_pc_compat_write_block_pio (struct parport *port,
|
|
const void *buf, size_t length,
|
|
int flags)
|
|
{
|
|
size_t written;
|
|
int r;
|
|
unsigned long expire;
|
|
const struct parport_pc_private *priv = port->physport->private_data;
|
|
|
|
/* Special case: a timeout of zero means we cannot call schedule().
|
|
* Also if O_NONBLOCK is set then use the default implementation. */
|
|
if (port->physport->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
|
|
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 failed\n", port->name);
|
|
|
|
port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
|
|
|
|
/* Write the data to the FIFO. */
|
|
written = parport_pc_fifo_write_block(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 stuck\n", 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_pio\n",
|
|
port->name, r);
|
|
|
|
port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
|
|
|
|
return written;
|
|
}
|
|
|
|
/* ECP */
|
|
#ifdef CONFIG_PARPORT_1284
|
|
static size_t parport_pc_ecp_write_block_pio (struct parport *port,
|
|
const void *buf, size_t length,
|
|
int flags)
|
|
{
|
|
size_t written;
|
|
int r;
|
|
unsigned long expire;
|
|
const struct parport_pc_private *priv = port->physport->private_data;
|
|
|
|
/* Special case: a timeout of zero means we cannot call schedule().
|
|
* Also if O_NONBLOCK is set then use the default implementation. */
|
|
if (port->physport->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
|
|
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_pio\n", 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 failed\n", port->name);
|
|
port->physport->ieee1284.phase = IEEE1284_PH_FWD_DATA;
|
|
|
|
/* Write the data to the FIFO. */
|
|
written = parport_pc_fifo_write_block(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 stuck\n", 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_pio\n", 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_pio\n", 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_pio\n",
|
|
port->name, r);
|
|
|
|
port->physport->ieee1284.phase = IEEE1284_PH_FWD_IDLE;
|
|
|
|
return written;
|
|
}
|
|
|
|
#if 0
|
|
static 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_pio\n");
|
|
dump_parport_state ("enter fcn", port);
|
|
|
|
/* Special case: a timeout of zero means we cannot call schedule().
|
|
* Also if O_NONBLOCK is set then use the default implementation. */
|
|
if (port->cad->timeout <= PARPORT_INACTIVITY_O_NONBLOCK)
|
|
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_pio\n", 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 failed\n", 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;
|
|
unsigned long expire = jiffies + port->cad->timeout;
|
|
unsigned char ecrval = inb (ECONTROL (port));
|
|
|
|
if (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 port\n");
|
|
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 %d\n", 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 out\n");
|
|
break;
|
|
}
|
|
ecrval = inb (ECONTROL (port));
|
|
if (!(ecrval & (1<<2))) {
|
|
if (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 FIFO\n");
|
|
|
|
/* 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_pio\n",
|
|
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 /* 0 */
|
|
#endif /* IEEE 1284 support */
|
|
#endif /* Allowed to use FIFO/DMA */
|
|
|
|
|
|
/*
|
|
* ******************************************
|
|
* INITIALISATION AND MODULE STUFF BELOW HERE
|
|
* ******************************************
|
|
*/
|
|
|
|
/* GCC is not inlining extern inline function later overwriten to non-inline,
|
|
so we use outlined_ variants here. */
|
|
static const struct parport_operations parport_pc_ops =
|
|
{
|
|
.write_data = parport_pc_write_data,
|
|
.read_data = parport_pc_read_data,
|
|
|
|
.write_control = parport_pc_write_control,
|
|
.read_control = parport_pc_read_control,
|
|
.frob_control = parport_pc_frob_control,
|
|
|
|
.read_status = parport_pc_read_status,
|
|
|
|
.enable_irq = parport_pc_enable_irq,
|
|
.disable_irq = parport_pc_disable_irq,
|
|
|
|
.data_forward = parport_pc_data_forward,
|
|
.data_reverse = parport_pc_data_reverse,
|
|
|
|
.init_state = parport_pc_init_state,
|
|
.save_state = parport_pc_save_state,
|
|
.restore_state = parport_pc_restore_state,
|
|
|
|
.epp_write_data = parport_ieee1284_epp_write_data,
|
|
.epp_read_data = parport_ieee1284_epp_read_data,
|
|
.epp_write_addr = parport_ieee1284_epp_write_addr,
|
|
.epp_read_addr = parport_ieee1284_epp_read_addr,
|
|
|
|
.ecp_write_data = parport_ieee1284_ecp_write_data,
|
|
.ecp_read_data = parport_ieee1284_ecp_read_data,
|
|
.ecp_write_addr = parport_ieee1284_ecp_write_addr,
|
|
|
|
.compat_write_data = parport_ieee1284_write_compat,
|
|
.nibble_read_data = parport_ieee1284_read_nibble,
|
|
.byte_read_data = parport_ieee1284_read_byte,
|
|
|
|
.owner = THIS_MODULE,
|
|
};
|
|
|
|
#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 *const 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%02x\n",
|
|
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=%d\n", 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=%s\n",
|
|
(cr23*4 >=0x100) ?"yes":"no", (cr1 & 4) ? "yes" : "no");
|
|
printk(KERN_INFO "SMSC LPT Config: Port mode=%s, EPP version =%s\n",
|
|
(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 *const 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 *const 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=%02x\n", 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=none\n");
|
|
else
|
|
printk("dma=%d\n",cr74 & 0x07);
|
|
printk(KERN_INFO "Winbond LPT Config: irqtype=%s, ECP fifo threshold=%d\n",
|
|
irqtypes[crf0>>7], (crf0>>3)&0x0f);
|
|
printk(KERN_INFO "Winbond LPT Config: Port mode=%s\n", 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=%s\n",
|
|
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=%s\n",
|
|
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;
|
|
|
|
if (!request_region(io, 3, __FUNCTION__))
|
|
return;
|
|
|
|
/* 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))
|
|
goto out; /* protection against false positives */
|
|
|
|
decode_winbond(io,key,devid,devrev,oldid);
|
|
out:
|
|
release_region(io, 3);
|
|
}
|
|
|
|
static void __devinit winbond_check2(int io,int key)
|
|
{
|
|
int devid,devrev,oldid,x_devid,x_devrev,x_oldid;
|
|
|
|
if (!request_region(io, 3, __FUNCTION__))
|
|
return;
|
|
|
|
/* 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))
|
|
goto out; /* protection against false positives */
|
|
|
|
decode_winbond(io,key,devid,devrev,oldid);
|
|
out:
|
|
release_region(io, 3);
|
|
}
|
|
|
|
static void __devinit smsc_check(int io, int key)
|
|
{
|
|
int id,rev,oldid,oldrev,x_id,x_rev,x_oldid,x_oldrev;
|
|
|
|
if (!request_region(io, 3, __FUNCTION__))
|
|
return;
|
|
|
|
/* 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))
|
|
goto out; /* protection against false positives */
|
|
|
|
decode_smsc(io,key,oldid,oldrev);
|
|
out:
|
|
release_region(io, 3);
|
|
}
|
|
|
|
|
|
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 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 address
|
|
* PARPORT_MODE_PCSPP : SPP port detected
|
|
* (if the user specified an ioport himself,
|
|
* this shall always be the case!)
|
|
*
|
|
*/
|
|
static int 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%02x\n", 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%02x\n", 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 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 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 bytes\n", 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 %d\n",
|
|
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 %d\n",
|
|
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 ID\n",
|
|
pb->base);
|
|
/* Assume 1 */
|
|
case 1:
|
|
pword = 1;
|
|
}
|
|
priv->pword = pword;
|
|
|
|
if (verbose_probing) {
|
|
printk (KERN_DEBUG "0x%lx: PWord is %d bits\n", pb->base, 8 * pword);
|
|
|
|
printk (KERN_DEBUG "0x%lx: Interrupts are ISA-%s\n", pb->base,
|
|
config & 0x80 ? "Level" : "Pulses");
|
|
|
|
configb = inb (CONFIGB (pb));
|
|
printk (KERN_DEBUG "0x%lx: ECP port cfgA=0x%02x cfgB=0x%02x\n",
|
|
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("%d\n",configb & 0x07);
|
|
}
|
|
|
|
/* Go back to mode 000 */
|
|
frob_set_mode (pb, ECR_SPP);
|
|
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
static int 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 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 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;
|
|
|
|
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));
|
|
|
|
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 parport_irq_probe(struct parport *pb)
|
|
{
|
|
struct parport_pc_private *priv = pb->private_data;
|
|
|
|
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);
|
|
|
|
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 -------------------------------- */
|
|
|
|
static LIST_HEAD(ports_list);
|
|
static DEFINE_SPINLOCK(ports_lock);
|
|
|
|
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 *p;
|
|
int probedirq = PARPORT_IRQ_NONE;
|
|
struct resource *base_res;
|
|
struct resource *ECR_res = NULL;
|
|
struct resource *EPP_res = NULL;
|
|
|
|
ops = kmalloc(sizeof (struct parport_operations), GFP_KERNEL);
|
|
if (!ops)
|
|
goto out1;
|
|
|
|
priv = kmalloc (sizeof (struct parport_pc_private), GFP_KERNEL);
|
|
if (!priv)
|
|
goto out2;
|
|
|
|
/* a misnomer, actually - it's allocate and reserve parport number */
|
|
p = parport_register_port(base, irq, dma, ops);
|
|
if (!p)
|
|
goto out3;
|
|
|
|
base_res = request_region(base, 3, p->name);
|
|
if (!base_res)
|
|
goto out4;
|
|
|
|
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 = NULL;
|
|
priv->dma_handle = 0;
|
|
priv->dev = dev;
|
|
INIT_LIST_HEAD(&priv->list);
|
|
priv->port = p;
|
|
p->base_hi = base_hi;
|
|
p->modes = PARPORT_MODE_PCSPP | PARPORT_MODE_SAFEININT;
|
|
p->private_data = priv;
|
|
|
|
if (base_hi) {
|
|
ECR_res = request_region(base_hi, 3, p->name);
|
|
if (ECR_res)
|
|
parport_ECR_present(p);
|
|
}
|
|
|
|
if (base != 0x3bc) {
|
|
EPP_res = request_region(base+0x3, 5, p->name);
|
|
if (EPP_res)
|
|
if (!parport_EPP_supported(p))
|
|
parport_ECPEPP_supported(p);
|
|
}
|
|
if (!parport_SPP_supported (p))
|
|
/* No port. */
|
|
goto out5;
|
|
if (priv->ecr)
|
|
parport_ECPPS2_supported(p);
|
|
else
|
|
parport_PS2_supported(p);
|
|
|
|
p->size = (p->modes & PARPORT_MODE_EPP)?8:3;
|
|
|
|
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);
|
|
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);
|
|
priv->ctr_writable |= 0x10;
|
|
|
|
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 detected\n", p->name, probedirq);
|
|
|
|
/* If No ECP release the ports grabbed above. */
|
|
if (ECR_res && (p->modes & PARPORT_MODE_ECP) == 0) {
|
|
release_region(base_hi, 3);
|
|
ECR_res = NULL;
|
|
}
|
|
/* Likewise for EEP ports */
|
|
if (EPP_res && (p->modes & PARPORT_MODE_EPP) == 0) {
|
|
release_region(base+3, 5);
|
|
EPP_res = NULL;
|
|
}
|
|
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 operation\n",
|
|
p->name, p->irq);
|
|
p->irq = PARPORT_IRQ_NONE;
|
|
p->dma = PARPORT_DMA_NONE;
|
|
}
|
|
|
|
#ifdef CONFIG_PARPORT_PC_FIFO
|
|
#ifdef HAS_DMA
|
|
if (p->dma != PARPORT_DMA_NONE) {
|
|
if (request_dma (p->dma, p->name)) {
|
|
printk (KERN_WARNING "%s: dma %d in use, "
|
|
"resorting to PIO operation\n",
|
|
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 operation\n",
|
|
p->name);
|
|
free_dma(p->dma);
|
|
p->dma = PARPORT_DMA_NONE;
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
/* 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. */
|
|
spin_lock(&ports_lock);
|
|
list_add(&priv->list, &ports_list);
|
|
spin_unlock(&ports_lock);
|
|
parport_announce_port (p);
|
|
|
|
return p;
|
|
|
|
out5:
|
|
if (ECR_res)
|
|
release_region(base_hi, 3);
|
|
if (EPP_res)
|
|
release_region(base+0x3, 5);
|
|
release_region(base, 3);
|
|
out4:
|
|
parport_put_port(p);
|
|
out3:
|
|
kfree (priv);
|
|
out2:
|
|
kfree (ops);
|
|
out1:
|
|
return NULL;
|
|
}
|
|
|
|
EXPORT_SYMBOL (parport_pc_probe_port);
|
|
|
|
void parport_pc_unregister_port (struct parport *p)
|
|
{
|
|
struct parport_pc_private *priv = p->private_data;
|
|
struct parport_operations *ops = p->ops;
|
|
|
|
parport_remove_port(p);
|
|
spin_lock(&ports_lock);
|
|
list_del_init(&priv->list);
|
|
spin_unlock(&ports_lock);
|
|
#if defined(CONFIG_PARPORT_PC_FIFO) && defined(HAS_DMA)
|
|
if (p->dma != PARPORT_DMA_NONE)
|
|
free_dma(p->dma);
|
|
#endif
|
|
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);
|
|
#if defined(CONFIG_PARPORT_PC_FIFO) && defined(HAS_DMA)
|
|
if (priv->dma_buf)
|
|
pci_free_consistent(priv->dev, PAGE_SIZE,
|
|
priv->dma_buf,
|
|
priv->dma_handle);
|
|
#endif
|
|
kfree (p->private_data);
|
|
parport_put_port(p);
|
|
kfree (ops); /* hope no-one cached it */
|
|
}
|
|
|
|
EXPORT_SYMBOL (parport_pc_unregister_port);
|
|
|
|
#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,
|
|
const struct parport_pc_via_data *via)
|
|
{
|
|
short inta_addr[6] = { 0x2A0, 0x2C0, 0x220, 0x240, 0x1E0 };
|
|
struct resource *base_res;
|
|
u32 ite8872set;
|
|
u32 ite8872_lpt, ite8872_lpthi;
|
|
u8 ite8872_irq, type;
|
|
char *fake_name = "parport probe";
|
|
int irq;
|
|
int i;
|
|
|
|
DPRINTK (KERN_DEBUG "sio_ite_8872_probe()\n");
|
|
|
|
// make sure which one chip
|
|
for(i = 0; i < 5; i++) {
|
|
base_res = request_region(inta_addr[i], 0x8, fake_name);
|
|
if (base_res) {
|
|
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;
|
|
release_region(inta_addr[i], 0x8);
|
|
}
|
|
}
|
|
if(i >= 5) {
|
|
printk (KERN_INFO "parport_pc: cannot find ITE8872 INTA\n");
|
|
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 ITE887x\n");
|
|
printk (KERN_INFO "parport_pc: please mail 'lspci -nvv' "
|
|
"output to Rich.Liu@ite.com.tw\n");
|
|
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;
|
|
|
|
/*
|
|
* Release the resource so that parport_pc_probe_port can get it.
|
|
*/
|
|
release_resource(base_res);
|
|
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 8231 support by Pavel Fedin <sonic_amiga@rambler.ru>
|
|
based on VIA 686a support code by Jeff Garzik <jgarzik@pobox.com> */
|
|
static int __devinitdata parport_init_mode = 0;
|
|
|
|
/* Data for two known VIA chips */
|
|
static struct parport_pc_via_data via_686a_data __devinitdata = {
|
|
0x51,
|
|
0x50,
|
|
0x85,
|
|
0x02,
|
|
0xE2,
|
|
0xF0,
|
|
0xE6
|
|
};
|
|
static struct parport_pc_via_data via_8231_data __devinitdata = {
|
|
0x45,
|
|
0x44,
|
|
0x50,
|
|
0x04,
|
|
0xF2,
|
|
0xFA,
|
|
0xF6
|
|
};
|
|
|
|
static int __devinit sio_via_probe (struct pci_dev *pdev, int autoirq,
|
|
int autodma,
|
|
const struct parport_pc_via_data *via)
|
|
{
|
|
u8 tmp, tmp2, siofunc;
|
|
u8 ppcontrol = 0;
|
|
int dma, irq;
|
|
unsigned port1, port2;
|
|
unsigned have_epp = 0;
|
|
|
|
printk(KERN_DEBUG "parport_pc: VIA 686A/8231 detected\n");
|
|
|
|
switch(parport_init_mode)
|
|
{
|
|
case 1:
|
|
printk(KERN_DEBUG "parport_pc: setting SPP mode\n");
|
|
siofunc = VIA_FUNCTION_PARPORT_SPP;
|
|
break;
|
|
case 2:
|
|
printk(KERN_DEBUG "parport_pc: setting PS/2 mode\n");
|
|
siofunc = VIA_FUNCTION_PARPORT_SPP;
|
|
ppcontrol = VIA_PARPORT_BIDIR;
|
|
break;
|
|
case 3:
|
|
printk(KERN_DEBUG "parport_pc: setting EPP mode\n");
|
|
siofunc = VIA_FUNCTION_PARPORT_EPP;
|
|
ppcontrol = VIA_PARPORT_BIDIR;
|
|
have_epp = 1;
|
|
break;
|
|
case 4:
|
|
printk(KERN_DEBUG "parport_pc: setting ECP mode\n");
|
|
siofunc = VIA_FUNCTION_PARPORT_ECP;
|
|
ppcontrol = VIA_PARPORT_BIDIR;
|
|
break;
|
|
case 5:
|
|
printk(KERN_DEBUG "parport_pc: setting EPP+ECP mode\n");
|
|
siofunc = VIA_FUNCTION_PARPORT_ECP;
|
|
ppcontrol = VIA_PARPORT_BIDIR|VIA_PARPORT_ECPEPP;
|
|
have_epp = 1;
|
|
break;
|
|
default:
|
|
printk(KERN_DEBUG "parport_pc: probing current configuration\n");
|
|
siofunc = VIA_FUNCTION_PROBE;
|
|
break;
|
|
}
|
|
/*
|
|
* unlock super i/o configuration
|
|
*/
|
|
pci_read_config_byte(pdev, via->via_pci_superio_config_reg, &tmp);
|
|
tmp |= via->via_pci_superio_config_data;
|
|
pci_write_config_byte(pdev, via->via_pci_superio_config_reg, tmp);
|
|
|
|
/* Bits 1-0: Parallel Port Mode / Enable */
|
|
outb(via->viacfg_function, VIA_CONFIG_INDEX);
|
|
tmp = inb (VIA_CONFIG_DATA);
|
|
/* Bit 5: EPP+ECP enable; bit 7: PS/2 bidirectional port enable */
|
|
outb(via->viacfg_parport_control, VIA_CONFIG_INDEX);
|
|
tmp2 = inb (VIA_CONFIG_DATA);
|
|
if (siofunc == VIA_FUNCTION_PROBE)
|
|
{
|
|
siofunc = tmp & VIA_FUNCTION_PARPORT_DISABLE;
|
|
ppcontrol = tmp2;
|
|
}
|
|
else
|
|
{
|
|
tmp &= ~VIA_FUNCTION_PARPORT_DISABLE;
|
|
tmp |= siofunc;
|
|
outb(via->viacfg_function, VIA_CONFIG_INDEX);
|
|
outb(tmp, VIA_CONFIG_DATA);
|
|
tmp2 &= ~(VIA_PARPORT_BIDIR|VIA_PARPORT_ECPEPP);
|
|
tmp2 |= ppcontrol;
|
|
outb(via->viacfg_parport_control, VIA_CONFIG_INDEX);
|
|
outb(tmp2, VIA_CONFIG_DATA);
|
|
}
|
|
|
|
/* Parallel Port I/O Base Address, bits 9-2 */
|
|
outb(via->viacfg_parport_base, VIA_CONFIG_INDEX);
|
|
port1 = inb(VIA_CONFIG_DATA) << 2;
|
|
|
|
printk (KERN_DEBUG "parport_pc: Current parallel port base: 0x%X\n",port1);
|
|
if ((port1 == 0x3BC) && have_epp)
|
|
{
|
|
outb(via->viacfg_parport_base, VIA_CONFIG_INDEX);
|
|
outb((0x378 >> 2), VIA_CONFIG_DATA);
|
|
printk(KERN_DEBUG "parport_pc: Parallel port base changed to 0x378\n");
|
|
port1 = 0x378;
|
|
}
|
|
|
|
/*
|
|
* lock super i/o configuration
|
|
*/
|
|
pci_read_config_byte(pdev, via->via_pci_superio_config_reg, &tmp);
|
|
tmp &= ~via->via_pci_superio_config_data;
|
|
pci_write_config_byte(pdev, via->via_pci_superio_config_reg, tmp);
|
|
|
|
if (siofunc == VIA_FUNCTION_PARPORT_DISABLE) {
|
|
printk(KERN_INFO "parport_pc: VIA parallel port disabled in BIOS\n");
|
|
return 0;
|
|
}
|
|
|
|
/* Bits 7-4: PnP Routing for Parallel Port IRQ */
|
|
pci_read_config_byte(pdev, via->via_pci_parport_irq_reg, &tmp);
|
|
irq = ((tmp & VIA_IRQCONTROL_PARALLEL) >> 4);
|
|
|
|
if (siofunc == VIA_FUNCTION_PARPORT_ECP)
|
|
{
|
|
/* Bits 3-2: PnP Routing for Parallel Port DMA */
|
|
pci_read_config_byte(pdev, via->via_pci_parport_dma_reg, &tmp);
|
|
dma = ((tmp & VIA_DMACONTROL_PARALLEL) >> 2);
|
|
}
|
|
else
|
|
/* if ECP not enabled, DMA is not enabled, assumed bogus 'dma' value */
|
|
dma = PARPORT_DMA_NONE;
|
|
|
|
/* Let the user (or defaults) steer us away from interrupts and DMA */
|
|
if (autoirq == PARPORT_IRQ_NONE) {
|
|
irq = PARPORT_IRQ_NONE;
|
|
dma = PARPORT_DMA_NONE;
|
|
}
|
|
if (autodma == PARPORT_DMA_NONE)
|
|
dma = PARPORT_DMA_NONE;
|
|
|
|
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 parport base 0x%X, ignoring\n",
|
|
port1);
|
|
return 0;
|
|
}
|
|
|
|
/* filter bogus IRQs */
|
|
switch (irq) {
|
|
case 0:
|
|
case 2:
|
|
case 8:
|
|
case 13:
|
|
irq = PARPORT_IRQ_NONE;
|
|
break;
|
|
|
|
default: /* do nothing */
|
|
break;
|
|
}
|
|
|
|
/* finally, do the probe with values obtained */
|
|
if (parport_pc_probe_port (port1, port2, irq, dma, NULL)) {
|
|
printk (KERN_INFO
|
|
"parport_pc: VIA 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 parallel port: io=0x%X, irq=%d, dma=%d\n",
|
|
port1, irq, dma);
|
|
return 0;
|
|
}
|
|
|
|
|
|
enum parport_pc_sio_types {
|
|
sio_via_686a = 0, /* Via VT82C686A motherboard Super I/O */
|
|
sio_via_8231, /* Via VT8231 south bridge integrated Super IO */
|
|
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,
|
|
const struct parport_pc_via_data *via);
|
|
const struct parport_pc_via_data *via;
|
|
} parport_pc_superio_info[] __devinitdata = {
|
|
{ sio_via_probe, &via_686a_data, },
|
|
{ sio_via_probe, &via_8231_data, },
|
|
{ sio_ite_8872_probe, NULL, },
|
|
};
|
|
|
|
enum parport_pc_pci_cards {
|
|
siig_1p_10x = last_sio,
|
|
siig_2p_10x,
|
|
siig_1p_20x,
|
|
siig_2p_20x,
|
|
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_1284p1,
|
|
titan_1284p2,
|
|
avlab_1p,
|
|
avlab_2p,
|
|
oxsemi_954,
|
|
oxsemi_840,
|
|
aks_0100,
|
|
mobility_pp,
|
|
netmos_9705,
|
|
netmos_9715,
|
|
netmos_9755,
|
|
netmos_9805,
|
|
netmos_9815,
|
|
};
|
|
|
|
|
|
/* 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];
|
|
|
|
/* If set, this is called immediately after pci_enable_device.
|
|
* If it returns non-zero, no probing will take place and the
|
|
* ports will not be used. */
|
|
int (*preinit_hook) (struct pci_dev *pdev, int autoirq, int autodma);
|
|
|
|
/* If set, this is called after probing for ports. If 'failed'
|
|
* is non-zero we couldn't use any of the ports. */
|
|
void (*postinit_hook) (struct pci_dev *pdev, int failed);
|
|
} cards[] = {
|
|
/* siig_1p_10x */ { 1, { { 2, 3 }, } },
|
|
/* siig_2p_10x */ { 2, { { 2, 3 }, { 4, 5 }, } },
|
|
/* siig_1p_20x */ { 1, { { 0, 1 }, } },
|
|
/* siig_2p_20x */ { 2, { { 0, 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_1284p1 */ { 1, { { 0, 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 }, } },
|
|
/* mobility_pp */ { 1, { { 0, 1 }, } },
|
|
/* netmos_9705 */ { 1, { { 0, -1 }, } }, /* untested */
|
|
/* netmos_9715 */ { 2, { { 0, 1 }, { 2, 3 },} }, /* untested */
|
|
/* netmos_9755 */ { 2, { { 0, 1 }, { 2, 3 },} }, /* untested */
|
|
/* netmos_9805 */ { 1, { { 0, -1 }, } }, /* untested */
|
|
/* netmos_9815 */ { 2, { { 0, -1 }, { 2, -1 }, } }, /* untested */
|
|
};
|
|
|
|
static const struct pci_device_id parport_pc_pci_tbl[] = {
|
|
/* Super-IO onboard chips */
|
|
{ 0x1106, 0x0686, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_via_686a },
|
|
{ 0x1106, 0x8231, PCI_ANY_ID, PCI_ANY_ID, 0, 0, sio_via_8231 },
|
|
{ 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_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_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_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 },
|
|
{ 0x14f2, 0x0121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, mobility_pp },
|
|
{ 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, 0x9805, 0x1000, 0x0010, 0, 0, titan_1284p1 },
|
|
{ 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 },
|
|
/* NetMos communication controllers */
|
|
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9705,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9705 },
|
|
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9715,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9715 },
|
|
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9755,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9755 },
|
|
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9805,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9805 },
|
|
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9815,
|
|
PCI_ANY_ID, PCI_ANY_ID, 0, 0, netmos_9815 },
|
|
{ 0, } /* terminate list */
|
|
};
|
|
MODULE_DEVICE_TABLE(pci,parport_pc_pci_tbl);
|
|
|
|
struct pci_parport_data {
|
|
int num;
|
|
struct parport *ports[2];
|
|
};
|
|
|
|
static int parport_pc_pci_probe (struct pci_dev *dev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
int err, count, n, i = id->driver_data;
|
|
struct pci_parport_data *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;
|
|
|
|
data = kmalloc(sizeof(struct pci_parport_data), GFP_KERNEL);
|
|
if (!data)
|
|
return -ENOMEM;
|
|
|
|
if (cards[i].preinit_hook &&
|
|
cards[i].preinit_hook (dev, PARPORT_IRQ_NONE, PARPORT_DMA_NONE)) {
|
|
kfree(data);
|
|
return -ENODEV;
|
|
}
|
|
|
|
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);
|
|
data->ports[count] =
|
|
parport_pc_probe_port (io_lo, io_hi, PARPORT_IRQ_NONE,
|
|
PARPORT_DMA_NONE, dev);
|
|
if (data->ports[count])
|
|
count++;
|
|
}
|
|
|
|
data->num = count;
|
|
|
|
if (cards[i].postinit_hook)
|
|
cards[i].postinit_hook (dev, count == 0);
|
|
|
|
if (count) {
|
|
pci_set_drvdata(dev, data);
|
|
return 0;
|
|
}
|
|
|
|
kfree(data);
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void __devexit parport_pc_pci_remove(struct pci_dev *dev)
|
|
{
|
|
struct pci_parport_data *data = pci_get_drvdata(dev);
|
|
int i;
|
|
|
|
pci_set_drvdata(dev, NULL);
|
|
|
|
if (data) {
|
|
for (i = data->num - 1; i >= 0; i--)
|
|
parport_pc_unregister_port(data->ports[i]);
|
|
|
|
kfree(data);
|
|
}
|
|
}
|
|
|
|
static struct pci_driver parport_pc_pci_driver = {
|
|
.name = "parport_pc",
|
|
.id_table = parport_pc_pci_tbl,
|
|
.probe = parport_pc_pci_probe,
|
|
.remove = __devexit_p(parport_pc_pci_remove),
|
|
};
|
|
|
|
static int __init parport_pc_init_superio (int autoirq, int autodma)
|
|
{
|
|
const struct pci_device_id *id;
|
|
struct pci_dev *pdev = NULL;
|
|
int ret = 0;
|
|
|
|
for_each_pci_dev(pdev) {
|
|
id = pci_match_id(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,parport_pc_superio_info[id->driver_data].via)) {
|
|
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 */
|
|
|
|
|
|
static const struct pnp_device_id parport_pc_pnp_tbl[] = {
|
|
/* Standard LPT Printer Port */
|
|
{.id = "PNP0400", .driver_data = 0},
|
|
/* ECP Printer Port */
|
|
{.id = "PNP0401", .driver_data = 0},
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pnp,parport_pc_pnp_tbl);
|
|
|
|
static int parport_pc_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *id)
|
|
{
|
|
struct parport *pdata;
|
|
unsigned long io_lo, io_hi;
|
|
int dma, irq;
|
|
|
|
if (pnp_port_valid(dev,0) &&
|
|
!(pnp_port_flags(dev,0) & IORESOURCE_DISABLED)) {
|
|
io_lo = pnp_port_start(dev,0);
|
|
} else
|
|
return -EINVAL;
|
|
|
|
if (pnp_port_valid(dev,1) &&
|
|
!(pnp_port_flags(dev,1) & IORESOURCE_DISABLED)) {
|
|
io_hi = pnp_port_start(dev,1);
|
|
} else
|
|
io_hi = 0;
|
|
|
|
if (pnp_irq_valid(dev,0) &&
|
|
!(pnp_irq_flags(dev,0) & IORESOURCE_DISABLED)) {
|
|
irq = pnp_irq(dev,0);
|
|
} else
|
|
irq = PARPORT_IRQ_NONE;
|
|
|
|
if (pnp_dma_valid(dev,0) &&
|
|
!(pnp_dma_flags(dev,0) & IORESOURCE_DISABLED)) {
|
|
dma = pnp_dma(dev,0);
|
|
} else
|
|
dma = PARPORT_DMA_NONE;
|
|
|
|
printk(KERN_INFO "parport: PnPBIOS parport detected.\n");
|
|
if (!(pdata = parport_pc_probe_port (io_lo, io_hi, irq, dma, NULL)))
|
|
return -ENODEV;
|
|
|
|
pnp_set_drvdata(dev,pdata);
|
|
return 0;
|
|
}
|
|
|
|
static void parport_pc_pnp_remove(struct pnp_dev *dev)
|
|
{
|
|
struct parport *pdata = (struct parport *)pnp_get_drvdata(dev);
|
|
if (!pdata)
|
|
return;
|
|
|
|
parport_pc_unregister_port(pdata);
|
|
}
|
|
|
|
/* we only need the pnp layer to activate the device, at least for now */
|
|
static struct pnp_driver parport_pc_pnp_driver = {
|
|
.name = "parport_pc",
|
|
.id_table = parport_pc_pnp_tbl,
|
|
.probe = parport_pc_pnp_probe,
|
|
.remove = parport_pc_pnp_remove,
|
|
};
|
|
|
|
|
|
/* This is called by parport_pc_find_nonpci_ports (in asm/parport.h) */
|
|
static int __devinit __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 void __init parport_pc_find_ports (int autoirq, int autodma)
|
|
{
|
|
int count = 0, err;
|
|
|
|
#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);
|
|
|
|
/* PnP ports, skip detection if SuperIO already found them */
|
|
if (!count) {
|
|
err = pnp_register_driver (&parport_pc_pnp_driver);
|
|
if (!err)
|
|
pnp_registered_parport = 1;
|
|
}
|
|
|
|
/* ISA ports and whatever (see asm/parport.h). */
|
|
parport_pc_find_nonpci_ports (autoirq, autodma);
|
|
|
|
err = pci_register_driver (&parport_pc_pci_driver);
|
|
if (!err)
|
|
pci_registered_parport = 1;
|
|
}
|
|
|
|
/*
|
|
* Piles of crap below pretend to be a parser for module and kernel
|
|
* parameters. Say "thank you" to whoever had come up with that
|
|
* syntax and keep in mind that code below is a cleaned up version.
|
|
*/
|
|
|
|
static int __initdata io[PARPORT_PC_MAX_PORTS+1] = { [0 ... PARPORT_PC_MAX_PORTS] = 0 };
|
|
static int __initdata io_hi[PARPORT_PC_MAX_PORTS+1] =
|
|
{ [0 ... PARPORT_PC_MAX_PORTS] = PARPORT_IOHI_AUTO };
|
|
static int __initdata dmaval[PARPORT_PC_MAX_PORTS] = { [0 ... PARPORT_PC_MAX_PORTS-1] = PARPORT_DMA_NONE };
|
|
static int __initdata irqval[PARPORT_PC_MAX_PORTS] = { [0 ... PARPORT_PC_MAX_PORTS-1] = PARPORT_IRQ_PROBEONLY };
|
|
|
|
static int __init parport_parse_param(const char *s, int *val,
|
|
int automatic, int none, int nofifo)
|
|
{
|
|
if (!s)
|
|
return 0;
|
|
if (!strncmp(s, "auto", 4))
|
|
*val = automatic;
|
|
else if (!strncmp(s, "none", 4))
|
|
*val = none;
|
|
else if (nofifo && !strncmp(s, "nofifo", 4))
|
|
*val = nofifo;
|
|
else {
|
|
char *ep;
|
|
unsigned long r = simple_strtoul(s, &ep, 0);
|
|
if (ep != s)
|
|
*val = r;
|
|
else {
|
|
printk(KERN_ERR "parport: bad specifier `%s'\n", s);
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int __init parport_parse_irq(const char *irqstr, int *val)
|
|
{
|
|
return parport_parse_param(irqstr, val, PARPORT_IRQ_AUTO,
|
|
PARPORT_IRQ_NONE, 0);
|
|
}
|
|
|
|
static int __init parport_parse_dma(const char *dmastr, int *val)
|
|
{
|
|
return parport_parse_param(dmastr, val, PARPORT_DMA_AUTO,
|
|
PARPORT_DMA_NONE, PARPORT_DMA_NOFIFO);
|
|
}
|
|
|
|
#ifdef CONFIG_PCI
|
|
static int __init parport_init_mode_setup(char *str)
|
|
{
|
|
printk(KERN_DEBUG "parport_pc.c: Specified parameter parport_init_mode=%s\n", str);
|
|
|
|
if (!strcmp (str, "spp"))
|
|
parport_init_mode=1;
|
|
if (!strcmp (str, "ps2"))
|
|
parport_init_mode=2;
|
|
if (!strcmp (str, "epp"))
|
|
parport_init_mode=3;
|
|
if (!strcmp (str, "ecp"))
|
|
parport_init_mode=4;
|
|
if (!strcmp (str, "ecpepp"))
|
|
parport_init_mode=5;
|
|
return 1;
|
|
}
|
|
#endif
|
|
|
|
#ifdef MODULE
|
|
static const char *irq[PARPORT_PC_MAX_PORTS];
|
|
static const char *dma[PARPORT_PC_MAX_PORTS];
|
|
|
|
MODULE_PARM_DESC(io, "Base I/O address (SPP regs)");
|
|
module_param_array(io, int, NULL, 0);
|
|
MODULE_PARM_DESC(io_hi, "Base I/O address (ECR)");
|
|
module_param_array(io_hi, int, NULL, 0);
|
|
MODULE_PARM_DESC(irq, "IRQ line");
|
|
module_param_array(irq, charp, NULL, 0);
|
|
MODULE_PARM_DESC(dma, "DMA channel");
|
|
module_param_array(dma, charp, NULL, 0);
|
|
#if defined(CONFIG_PARPORT_PC_SUPERIO) || \
|
|
(defined(CONFIG_PARPORT_1284) && defined(CONFIG_PARPORT_PC_FIFO))
|
|
MODULE_PARM_DESC(verbose_probing, "Log chit-chat during initialisation");
|
|
module_param(verbose_probing, int, 0644);
|
|
#endif
|
|
#ifdef CONFIG_PCI
|
|
static char *init_mode;
|
|
MODULE_PARM_DESC(init_mode, "Initialise mode for VIA VT8231 port (spp, ps2, epp, ecp or ecpepp)");
|
|
module_param(init_mode, charp, 0);
|
|
#endif
|
|
|
|
static int __init parse_parport_params(void)
|
|
{
|
|
unsigned int i;
|
|
int val;
|
|
|
|
#ifdef CONFIG_PCI
|
|
if (init_mode)
|
|
parport_init_mode_setup(init_mode);
|
|
#endif
|
|
|
|
for (i = 0; i < PARPORT_PC_MAX_PORTS && io[i]; i++) {
|
|
if (parport_parse_irq(irq[i], &val))
|
|
return 1;
|
|
irqval[i] = val;
|
|
if (parport_parse_dma(dma[i], &val))
|
|
return 1;
|
|
dmaval[i] = val;
|
|
}
|
|
if (!io[0]) {
|
|
/* The user can make us use any IRQs or DMAs we find. */
|
|
if (irq[0] && !parport_parse_irq(irq[0], &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 one\n");
|
|
}
|
|
|
|
if (dma[0] && !parport_parse_dma(dma[0], &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 one\n");
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
#else
|
|
|
|
static int parport_setup_ptr __initdata = 0;
|
|
|
|
/*
|
|
* Acceptable parameters:
|
|
*
|
|
* parport=0
|
|
* parport=auto
|
|
* parport=0xBASE[,IRQ[,DMA]]
|
|
*
|
|
* IRQ/DMA may be numeric or 'auto' or 'none'
|
|
*/
|
|
static int __init parport_setup (char *str)
|
|
{
|
|
char *endptr;
|
|
char *sep;
|
|
int val;
|
|
|
|
if (!str || !*str || (*str == '0' && !*(str+1))) {
|
|
/* Disable parport if "parport=0" in cmdline */
|
|
io[0] = PARPORT_DISABLE;
|
|
return 1;
|
|
}
|
|
|
|
if (!strncmp (str, "auto", 4)) {
|
|
irqval[0] = PARPORT_IRQ_AUTO;
|
|
dmaval[0] = PARPORT_DMA_AUTO;
|
|
return 1;
|
|
}
|
|
|
|
val = simple_strtoul (str, &endptr, 0);
|
|
if (endptr == str) {
|
|
printk (KERN_WARNING "parport=%s not understood\n", str);
|
|
return 1;
|
|
}
|
|
|
|
if (parport_setup_ptr == PARPORT_PC_MAX_PORTS) {
|
|
printk(KERN_ERR "parport=%s ignored, too many ports\n", str);
|
|
return 1;
|
|
}
|
|
|
|
io[parport_setup_ptr] = val;
|
|
irqval[parport_setup_ptr] = PARPORT_IRQ_NONE;
|
|
dmaval[parport_setup_ptr] = PARPORT_DMA_NONE;
|
|
|
|
sep = strchr(str, ',');
|
|
if (sep++) {
|
|
if (parport_parse_irq(sep, &val))
|
|
return 1;
|
|
irqval[parport_setup_ptr] = val;
|
|
sep = strchr(sep, ',');
|
|
if (sep++) {
|
|
if (parport_parse_dma(sep, &val))
|
|
return 1;
|
|
dmaval[parport_setup_ptr] = val;
|
|
}
|
|
}
|
|
parport_setup_ptr++;
|
|
return 1;
|
|
}
|
|
|
|
static int __init parse_parport_params(void)
|
|
{
|
|
return io[0] == PARPORT_DISABLE;
|
|
}
|
|
|
|
__setup ("parport=", parport_setup);
|
|
|
|
/*
|
|
* Acceptable parameters:
|
|
*
|
|
* parport_init_mode=[spp|ps2|epp|ecp|ecpepp]
|
|
*/
|
|
#ifdef CONFIG_PCI
|
|
__setup("parport_init_mode=",parport_init_mode_setup);
|
|
#endif
|
|
#endif
|
|
|
|
/* "Parser" ends here */
|
|
|
|
static int __init parport_pc_init(void)
|
|
{
|
|
#if defined(CONFIG_PPC_MERGE)
|
|
if (check_legacy_ioport(PARALLEL_BASE))
|
|
return -ENODEV;
|
|
#endif
|
|
if (parse_parport_params())
|
|
return -EINVAL;
|
|
|
|
if (io[0]) {
|
|
int i;
|
|
/* Only probe the ports we were given. */
|
|
user_specified = 1;
|
|
for (i = 0; i < PARPORT_PC_MAX_PORTS; i++) {
|
|
if (!io[i])
|
|
break;
|
|
if ((io_hi[i]) == PARPORT_IOHI_AUTO)
|
|
io_hi[i] = 0x400 + io[i];
|
|
parport_pc_probe_port(io[i], io_hi[i],
|
|
irqval[i], dmaval[i], NULL);
|
|
}
|
|
} else
|
|
parport_pc_find_ports (irqval[0], dmaval[0]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit parport_pc_exit(void)
|
|
{
|
|
if (pci_registered_parport)
|
|
pci_unregister_driver (&parport_pc_pci_driver);
|
|
if (pnp_registered_parport)
|
|
pnp_unregister_driver (&parport_pc_pnp_driver);
|
|
|
|
spin_lock(&ports_lock);
|
|
while (!list_empty(&ports_list)) {
|
|
struct parport_pc_private *priv;
|
|
struct parport *port;
|
|
priv = list_entry(ports_list.next,
|
|
struct parport_pc_private, list);
|
|
port = priv->port;
|
|
spin_unlock(&ports_lock);
|
|
parport_pc_unregister_port(port);
|
|
spin_lock(&ports_lock);
|
|
}
|
|
spin_unlock(&ports_lock);
|
|
}
|
|
|
|
MODULE_AUTHOR("Phil Blundell, Tim Waugh, others");
|
|
MODULE_DESCRIPTION("PC-style parallel port driver");
|
|
MODULE_LICENSE("GPL");
|
|
module_init(parport_pc_init)
|
|
module_exit(parport_pc_exit)
|