| /* Low-level parallel-port routines for 8255-based PC-style hardware. |
| * |
| * Authors: Phil Blundell <philb@gnu.org> |
| * Tim Waugh <tim@cyberelk.demon.co.uk> |
| * Jose Renau <renau@acm.org> |
| * David Campbell |
| * Andrea Arcangeli |
| * |
| * based on work by Grant Guenther <grant@torque.net> and Phil Blundell. |
| * |
| * Cleaned up include files - Russell King <linux@arm.uk.linux.org> |
| * DMA support - Bert De Jonghe <bert@sophis.be> |
| * Many ECP bugs fixed. Fred Barnes & Jamie Lokier, 1999 |
| * More PCI support now conditional on CONFIG_PCI, 03/2001, Paul G. |
| * Various hacks, Fred Barnes, 04/2001 |
| * Updated probing logic - Adam Belay <ambx1@neo.rr.com> |
| */ |
| |
| /* This driver should work with any hardware that is broadly compatible |
| * with that in the IBM PC. This applies to the majority of integrated |
| * I/O chipsets that are commonly available. The expected register |
| * layout is: |
| * |
| * base+0 data |
| * base+1 status |
| * base+2 control |
| * |
| * In addition, there are some optional registers: |
| * |
| * base+3 EPP address |
| * base+4 EPP data |
| * base+0x400 ECP config A |
| * base+0x401 ECP config B |
| * base+0x402 ECP control |
| * |
| * All registers are 8 bits wide and read/write. If your hardware differs |
| * only in register addresses (eg because your registers are on 32-bit |
| * word boundaries) then you can alter the constants in parport_pc.h to |
| * accommodate this. |
| * |
| * Note that the ECP registers may not start at offset 0x400 for PCI cards, |
| * but rather will start at port->base_hi. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/sched/signal.h> |
| #include <linux/delay.h> |
| #include <linux/errno.h> |
| #include <linux/interrupt.h> |
| #include <linux/ioport.h> |
| #include <linux/kernel.h> |
| #include <linux/slab.h> |
| #include <linux/dma-mapping.h> |
| #include <linux/pci.h> |
| #include <linux/pnp.h> |
| #include <linux/platform_device.h> |
| #include <linux/sysctl.h> |
| #include <linux/io.h> |
| #include <linux/uaccess.h> |
| |
| #include <asm/dma.h> |
| |
| #include <linux/parport.h> |
| #include <linux/parport_pc.h> |
| #include <linux/via.h> |
| #include <asm/parport.h> |
| |
| #define PARPORT_PC_MAX_PORTS PARPORT_MAX |
| |
| #ifdef CONFIG_ISA_DMA_API |
| #define HAS_DMA |
| #endif |
| |
| /* ECR modes */ |
| #define ECR_SPP 00 |
| #define ECR_PS2 01 |
| #define ECR_PPF 02 |
| #define ECR_ECP 03 |
| #define ECR_EPP 04 |
| #define ECR_VND 05 |
| #define ECR_TST 06 |
| #define ECR_CNF 07 |
| #define ECR_MODE_MASK 0xe0 |
| #define ECR_WRITE(p, v) frob_econtrol((p), 0xff, (v)) |
| |
| #undef DEBUG |
| |
| #ifdef DEBUG |
| #define DPRINTK printk |
| #else |
| #define DPRINTK(stuff...) |
| #endif |
| |
| |
| #define NR_SUPERIOS 3 |
| static struct superio_struct { /* For Super-IO chips autodetection */ |
| int io; |
| int irq; |
| int dma; |
| } superios[NR_SUPERIOS] = { {0,},}; |
| |
| static int user_specified; |
| #if defined(CONFIG_PARPORT_PC_SUPERIO) || \ |
| (defined(CONFIG_PARPORT_1284) && defined(CONFIG_PARPORT_PC_FIFO)) |
| static int verbose_probing; |
| #endif |
| static int pci_registered_parport; |
| static int pnp_registered_parport; |
| |
| /* frob_control, but for ECR */ |
| static void frob_econtrol(struct parport *pb, unsigned char m, |
| unsigned char v) |
| { |
| unsigned char ectr = 0; |
| |
| if (m != 0xff) |
| ectr = inb(ECONTROL(pb)); |
| |
| DPRINTK(KERN_DEBUG "frob_econtrol(%02x,%02x): %02x -> %02x\n", |
| m, v, ectr, (ectr & ~m) ^ v); |
| |
| outb((ectr & ~m) ^ v, ECONTROL(pb)); |
| } |
| |
| static inline void frob_set_mode(struct parport *p, int mode) |
| { |
| frob_econtrol(p, ECR_MODE_MASK, mode << 5); |
| } |
| |
| #ifdef CONFIG_PARPORT_PC_FIFO |
| /* Safely change the mode bits in the ECR |
| Returns: |
| 0 : Success |
| -EBUSY: Could not drain FIFO in some finite amount of time, |
| mode not changed! |
| */ |
| static int change_mode(struct parport *p, int m) |
| { |
| const struct parport_pc_private *priv = p->physport->private_data; |
| unsigned char oecr; |
| int mode; |
| |
| DPRINTK(KERN_INFO "parport change_mode ECP-ISA to mode 0x%02x\n", m); |
| |
| if (!priv->ecr) { |
| printk(KERN_DEBUG "change_mode: but there's no ECR!\n"); |
| return 0; |
| } |
| |
| /* Bits <7:5> contain the mode. */ |
| oecr = inb(ECONTROL(p)); |
| mode = (oecr >> 5) & 0x7; |
| if (mode == m) |
| return 0; |
| |
| if (mode >= 2 && !(priv->ctr & 0x20)) { |
| /* This mode resets the FIFO, so we may |
| * have to wait for it to drain first. */ |
| unsigned long expire = jiffies + p->physport->cad->timeout; |
| int counter; |
| switch (mode) { |
| case ECR_PPF: /* Parallel Port FIFO mode */ |
| case ECR_ECP: /* ECP Parallel Port mode */ |
| /* Busy wait for 200us */ |
| for (counter = 0; counter < 40; counter++) { |
| if (inb(ECONTROL(p)) & 0x01) |
| break; |
| if (signal_pending(current)) |
| break; |
| udelay(5); |
| } |
| |
| /* Poll slowly. */ |
| while (!(inb(ECONTROL(p)) & 0x01)) { |
| if (time_after_eq(jiffies, expire)) |
| /* The FIFO is stuck. */ |
| return -EBUSY; |
| schedule_timeout_interruptible( |
| msecs_to_jiffies(10)); |
| if (signal_pending(current)) |
| break; |
| } |
| } |
| } |
| |
| if (mode >= 2 && m >= 2) { |
| /* We have to go through mode 001 */ |
| oecr &= ~(7 << 5); |
| oecr |= ECR_PS2 << 5; |
| ECR_WRITE(p, oecr); |
| } |
| |
| /* Set the mode. */ |
| oecr &= ~(7 << 5); |
| oecr |= m << 5; |
| ECR_WRITE(p, oecr); |
| return 0; |
| } |
| #endif /* FIFO support */ |
| |
| /* |
| * Clear TIMEOUT BIT in EPP MODE |
| * |
| * This is also used in SPP detection. |
| */ |
| static int clear_epp_timeout(struct parport *pb) |
| { |
| unsigned char r; |
| |
| if (!(parport_pc_read_status(pb) & 0x01)) |
| return 1; |
| |
| /* To clear timeout some chips require double read */ |
| parport_pc_read_status(pb); |
| r = parport_pc_read_status(pb); |
| outb(r | 0x01, STATUS(pb)); /* Some reset by writing 1 */ |
| outb(r & 0xfe, STATUS(pb)); /* Others by writing 0 */ |
| r = parport_pc_read_status(pb); |
| |
| return !(r & 0x01); |
| } |
| |
| /* |
| * Access functions. |
| * |
| * Most of these aren't static because they may be used by the |
| * parport_xxx_yyy macros. extern __inline__ versions of several |
| * of these are in parport_pc.h. |
| */ |
| |
| static void parport_pc_init_state(struct pardevice *dev, |
| struct parport_state *s) |
| { |
| s->u.pc.ctr = 0xc; |
| if (dev->irq_func && |
| dev->port->irq != PARPORT_IRQ_NONE) |
| /* Set ackIntEn */ |
| s->u.pc.ctr |= 0x10; |
| |
| s->u.pc.ecr = 0x34; /* NetMos chip can cause problems 0x24; |
| * D.Gruszka VScom */ |
| } |
| |
| static void parport_pc_save_state(struct parport *p, struct parport_state *s) |
| { |
| const struct parport_pc_private *priv = p->physport->private_data; |
| s->u.pc.ctr = priv->ctr; |
| if (priv->ecr) |
| s->u.pc.ecr = inb(ECONTROL(p)); |
| } |
| |
| static void parport_pc_restore_state(struct parport *p, |
| struct parport_state *s) |
| { |
| struct parport_pc_private *priv = p->physport->private_data; |
| register unsigned char c = s->u.pc.ctr & priv->ctr_writable; |
| outb(c, CONTROL(p)); |
| priv->ctr = c; |
| if (priv->ecr) |
| ECR_WRITE(p, s->u.pc.ecr); |
| } |
| |
| #ifdef CONFIG_PARPORT_1284 |
| static size_t parport_pc_epp_read_data(struct parport *port, void *buf, |
| size_t length, int flags) |
| { |
| size_t got = 0; |
| |
| if (flags & PARPORT_W91284PIC) { |
| unsigned char status; |
| size_t left = length; |
| |
| /* use knowledge about data lines..: |
| * nFault is 0 if there is at least 1 byte in the Warp's FIFO |
| * pError is 1 if there are 16 bytes in the Warp's FIFO |
| */ |
| status = inb(STATUS(port)); |
| |
| while (!(status & 0x08) && got < length) { |
| if (left >= 16 && (status & 0x20) && !(status & 0x08)) { |
| /* can grab 16 bytes from warp fifo */ |
| if (!((long)buf & 0x03)) |
| insl(EPPDATA(port), buf, 4); |
| else |
| insb(EPPDATA(port), buf, 16); |
| buf += 16; |
| got += 16; |
| left -= 16; |
| } else { |
| /* grab single byte from the warp fifo */ |
| *((char *)buf) = inb(EPPDATA(port)); |
| buf++; |
| got++; |
| left--; |
| } |
| status = inb(STATUS(port)); |
| if (status & 0x01) { |
| /* EPP timeout should never occur... */ |
| printk(KERN_DEBUG |
| "%s: EPP timeout occurred while talking to w91284pic (should not have done)\n", port->name); |
| clear_epp_timeout(port); |
| } |
| } |
| return got; |
| } |
| if ((flags & PARPORT_EPP_FAST) && (length > 1)) { |
| if (!(((long)buf | length) & 0x03)) |
| insl(EPPDATA(port), buf, (length >> 2)); |
| else |
| insb(EPPDATA(port), buf, length); |
| if (inb(STATUS(port)) & 0x01) { |
| clear_epp_timeout(port); |
| return -EIO; |
| } |
| return length; |
| } |
| for (; got < length; got++) { |
| *((char *)buf) = inb(EPPDATA(port)); |
| buf++; |
| if (inb(STATUS(port)) & 0x01) { |
| /* EPP timeout */ |
| clear_epp_timeout(port); |
| break; |
| } |
| } |
| |
| return got; |
| } |
| |
| static size_t parport_pc_epp_write_data(struct parport *port, const void *buf, |
| size_t length, int flags) |
| { |
| size_t written = 0; |
| |
| if ((flags & PARPORT_EPP_FAST) && (length > 1)) { |
| if (!(((long)buf | length) & 0x03)) |
| outsl(EPPDATA(port), buf, (length >> 2)); |
| else |
| outsb(EPPDATA(port), buf, length); |
| if (inb(STATUS(port)) & 0x01) { |
| clear_epp_timeout(port); |
| return -EIO; |
| } |
| return length; |
| } |
| for (; written < length; written++) { |
| outb(*((char *)buf), EPPDATA(port)); |
| buf++; |
| if (inb(STATUS(port)) & 0x01) { |
| clear_epp_timeout(port); |
| break; |
| } |
| } |
| |
| return written; |
| } |
| |
| static size_t parport_pc_epp_read_addr(struct parport *port, void *buf, |
| size_t length, int flags) |
| { |
| size_t got = 0; |
| |
| if ((flags & PARPORT_EPP_FAST) && (length > 1)) { |
| insb(EPPADDR(port), buf, length); |
| if (inb(STATUS(port)) & 0x01) { |
| clear_epp_timeout(port); |
| return -EIO; |
| } |
| return length; |
| } |
| for (; got < length; got++) { |
| *((char *)buf) = inb(EPPADDR(port)); |
| buf++; |
| if (inb(STATUS(port)) & 0x01) { |
| clear_epp_timeout(port); |
| break; |
| } |
| } |
| |
| return got; |
| } |
| |
| static size_t parport_pc_epp_write_addr(struct parport *port, |
| const void *buf, size_t length, |
| int flags) |
| { |
| size_t written = 0; |
| |
| if ((flags & PARPORT_EPP_FAST) && (length > 1)) { |
| outsb(EPPADDR(port), buf, length); |
| if (inb(STATUS(port)) & 0x01) { |
| clear_epp_timeout(port); |
| return -EIO; |
| } |
| return length; |
| } |
| for (; written < length; written++) { |
| outb(*((char *)buf), EPPADDR(port)); |
| buf++; |
| if (inb(STATUS(port)) & 0x01) { |
| clear_epp_timeout(port); |
| break; |
| } |
| } |
| |
| return written; |
| } |
| |
| static size_t parport_pc_ecpepp_read_data(struct parport *port, void *buf, |
| size_t length, int flags) |
| { |
| size_t got; |
| |
| frob_set_mode(port, ECR_EPP); |
| parport_pc_data_reverse(port); |
| parport_pc_write_control(port, 0x4); |
| got = parport_pc_epp_read_data(port, buf, length, flags); |
| frob_set_mode(port, ECR_PS2); |
| |
| return got; |
| } |
| |
| static size_t parport_pc_ecpepp_write_data(struct parport *port, |
| const void *buf, size_t length, |
| int flags) |
| { |
| size_t written; |
| |
| frob_set_mode(port, ECR_EPP); |
| parport_pc_write_control(port, 0x4); |
| parport_pc_data_forward(port); |
| written = parport_pc_epp_write_data(port, buf, length, flags); |
| frob_set_mode(port, ECR_PS2); |
| |
| return written; |
| } |
| |
| static size_t parport_pc_ecpepp_read_addr(struct parport *port, void *buf, |
| size_t length, int flags) |
| { |
| size_t got; |
| |
| frob_set_mode(port, ECR_EPP); |
| parport_pc_data_reverse(port); |
| parport_pc_write_control(port, 0x4); |
| got = parport_pc_epp_read_addr(port, buf, length, flags); |
| frob_set_mode(port, ECR_PS2); |
| |
| return got; |
| } |
| |
| static size_t parport_pc_ecpepp_write_addr(struct parport *port, |
| const void *buf, size_t length, |
| int flags) |
| { |
| size_t written; |
| |
| frob_set_mode(port, ECR_EPP); |
| parport_pc_write_control(port, 0x4); |
| parport_pc_data_forward(port); |
| written = parport_pc_epp_write_addr(port, buf, length, flags); |
| frob_set_mode(port, ECR_PS2); |
| |
| return written; |
| } |
| #endif /* IEEE 1284 support */ |
| |
| #ifdef CONFIG_PARPORT_PC_FIFO |
| static size_t parport_pc_fifo_write_block_pio(struct parport *port, |
| const void *buf, size_t length) |
| { |
| int ret = 0; |
| const unsigned char *bufp = buf; |
| size_t left = length; |
| 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; |
| struct device *dev = port->physport->dev; |
| 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 = dma_map_single(dev, (void *)buf, length, |
| DMA_TO_DEVICE); |
| } 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) |
| dma_unmap_single(dev, dma_handle, length, DMA_TO_DEVICE); |
| |
| 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; |
| } |
| #endif /* IEEE 1284 support */ |
| #endif /* Allowed to use FIFO/DMA */ |
| |
| |
| /* |
| * ****************************************** |
| * INITIALISATION AND MODULE STUFF BELOW HERE |
| * ****************************************** |
| */ |
| |
| /* GCC is not inlining extern inline function later overwritten 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 |
| |
| static struct superio_struct *find_free_superio(void) |
| { |
| int i; |
| for (i = 0; i < NR_SUPERIOS; i++) |
| if (superios[i].io == 0) |
| return &superios[i]; |
| return NULL; |
| } |
| |
| |
| /* Super-IO chipset detection, Winbond, SMSC */ |
| static void show_parconfig_smsc37c669(int io, int key) |
| { |
| int cr1, cr4, cra, cr23, cr26, cr27; |
| struct superio_struct *s; |
| |
| 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 */ |
| s = find_free_superio(); |
| if (s == NULL) |
| printk(KERN_INFO "Super-IO: too many chips!\n"); |
| else { |
| int d; |
| switch (cr23 * 4) { |
| case 0x3bc: |
| s->io = 0x3bc; |
| s->irq = 7; |
| break; |
| case 0x378: |
| s->io = 0x378; |
| s->irq = 7; |
| break; |
| case 0x278: |
| s->io = 0x278; |
| s->irq = 5; |
| } |
| d = (cr26 & 0x0f); |
| if (d == 1 || d == 3) |
| s->dma = d; |
| else |
| s->dma = PARPORT_DMA_NONE; |
| } |
| } |
| } |
| |
| |
| static void show_parconfig_winbond(int io, int key) |
| { |
| int cr30, cr60, cr61, cr70, cr74, crf0; |
| struct superio_struct *s; |
| 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) |
| pr_cont("dma=none\n"); |
| else |
| pr_cont("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 ... */ |
| s = find_free_superio(); |
| if (s == NULL) |
| printk(KERN_INFO "Super-IO: too many chips!\n"); |
| else { |
| s->io = (cr60 << 8) | cr61; |
| s->irq = cr70 & 0x0f; |
| s->dma = (((cr74 & 0x07) > 3) ? |
| PARPORT_DMA_NONE : (cr74 & 0x07)); |
| } |
| } |
| } |
| |
| static void 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 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 winbond_check(int io, int key) |
| { |
| int origval, devid, devrev, oldid, x_devid, x_devrev, x_oldid; |
| |
| if (!request_region(io, 3, __func__)) |
| return; |
| |
| origval = inb(io); /* Save original value */ |
| |
| /* 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 |
| function 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 */ |
| |
| outb(origval, io); /* in case we poked some entirely different hardware */ |
| |
| 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 winbond_check2(int io, int key) |
| { |
| int origval[3], devid, devrev, oldid, x_devid, x_devrev, x_oldid; |
| |
| if (!request_region(io, 3, __func__)) |
| return; |
| |
| origval[0] = inb(io); /* Save original values */ |
| origval[1] = inb(io + 1); |
| origval[2] = inb(io + 2); |
| |
| /* 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 |
| function 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 */ |
| |
| outb(origval[0], io); /* in case we poked some entirely different hardware */ |
| outb(origval[1], io + 1); |
| outb(origval[2], io + 2); |
| |
| 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 smsc_check(int io, int key) |
| { |
| int origval, id, rev, oldid, oldrev, x_id, x_rev, x_oldid, x_oldrev; |
| |
| if (!request_region(io, 3, __func__)) |
| return; |
| |
| origval = inb(io); /* Save original value */ |
| |
| /* 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 |
| function 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 */ |
| |
| outb(origval, io); /* in case we poked some entirely different hardware */ |
| |
| 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 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 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); |
| } |
| |
| static void detect_and_report_it87(void) |
| { |
| u16 dev; |
| u8 origval, r; |
| if (verbose_probing) |
| printk(KERN_DEBUG "IT8705 Super-IO detection, now testing port 2E ...\n"); |
| if (!request_muxed_region(0x2e, 2, __func__)) |
| return; |
| origval = inb(0x2e); /* Save original value */ |
| outb(0x87, 0x2e); |
| outb(0x01, 0x2e); |
| outb(0x55, 0x2e); |
| outb(0x55, 0x2e); |
| outb(0x20, 0x2e); |
| dev = inb(0x2f) << 8; |
| outb(0x21, 0x2e); |
| dev |= inb(0x2f); |
| if (dev == 0x8712 || dev == 0x8705 || dev == 0x8715 || |
| dev == 0x8716 || dev == 0x8718 || dev == 0x8726) { |
| printk(KERN_INFO "IT%04X SuperIO detected.\n", dev); |
| outb(0x07, 0x2E); /* Parallel Port */ |
| outb(0x03, 0x2F); |
| outb(0xF0, 0x2E); /* BOOT 0x80 off */ |
| r = inb(0x2f); |
| outb(0xF0, 0x2E); |
| outb(r | 8, 0x2F); |
| outb(0x02, 0x2E); /* Lock */ |
| outb(0x02, 0x2F); |
| } else { |
| outb(origval, 0x2e); /* Oops, sorry to disturb */ |
| } |
| release_region(0x2e, 2); |
| } |
| #endif /* CONFIG_PARPORT_PC_SUPERIO */ |
| |
| static struct superio_struct *find_superio(struct parport *p) |
| { |
| int i; |
| for (i = 0; i < NR_SUPERIOS; i++) |
| if (superios[i].io == p->base) |
| return &superios[i]; |
| return NULL; |
| } |
| |
| static int get_superio_dma(struct parport *p) |
| { |
| struct superio_struct *s = find_superio(p); |
| if (s) |
| return s->dma; |
| return PARPORT_DMA_NONE; |
| } |
| |
| static int get_superio_irq(struct parport *p) |
| { |
| struct superio_struct *s = find_superio(p); |
| if (s) |
| return s->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 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) |
| pr_cont("%d", intrline[(configb >> 3) & 0x07]); |
| else |
| pr_cont("<none or set by other means>"); |
| pr_cont(" dma="); |
| if ((configb & 0x03) == 0x00) |
| pr_cont("<none or set by other means>\n"); |
| else |
| pr_cont("%d\n", configb & 0x07); |
| } |
| |
| /* Go back to mode 000 */ |
| frob_set_mode(pb, ECR_SPP); |
| |
| return 1; |
| } |
| #endif |
| |
| #ifdef CONFIG_X86_32 |
| static int intel_bug_present_check_epp(struct parport *pb) |
| { |
| const struct parport_pc_private *priv = pb->private_data; |
| int bug_present = 0; |
| |
| if (priv->ecr) { |
| /* store value of ECR */ |
| unsigned char ecr = inb(ECONTROL(pb)); |
| unsigned char i; |
| for (i = 0x00; i < 0x80; i += 0x20) { |
| ECR_WRITE(pb, i); |
| if (clear_epp_timeout(pb)) { |
| /* Phony EPP in ECP. */ |
| bug_present = 1; |
| break; |
| } |
| } |
| /* return ECR into the inital state */ |
| ECR_WRITE(pb, ecr); |
| } |
| |
| return bug_present; |
| } |
| static int intel_bug_present(struct parport *pb) |
| { |
| /* Check whether the device is legacy, not PCI or PCMCIA. Only legacy is known to be affected. */ |
| if (pb->dev != NULL) { |
| return 0; |
| } |
| |
| return intel_bug_present_check_epp(pb); |
| } |
| #else |
| static int intel_bug_present(struct parport *pb) |
| { |
| return 0; |
| } |
| #endif /* CONFIG_X86_32 */ |
| |
| 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) |
| { |
| /* |
| * 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 (intel_bug_present(pb)) |
| 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 parport_PS2_supported(struct parport *pb) { return 0; } |
| #ifdef CONFIG_PARPORT_PC_FIFO |
| static int parport_ECP_supported(struct parport *pb) |
| { |
| return 0; |
| } |
| #endif |
| static int parport_EPP_supported(struct parport *pb) |
| { |
| return 0; |
| } |
| |
| static int parport_ECPEPP_supported(struct parport *pb) |
| { |
| return 0; |
| } |
| |
| static int parport_ECPPS2_supported(struct parport *pb) |
| { |
| return 0; |
| } |
| |
| #endif /* No IEEE 1284 support */ |
| |
| /* --- IRQ detection -------------------------------------- */ |
| |
| /* Only if supports ECP mode */ |
| static int 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 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 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 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 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 parport_dma_probe(struct parport *p) |
| { |
| const struct parport_pc_private *priv = p->private_data; |
| if (priv->ecr) /* ask ECP chipset first */ |
| p->dma = programmable_dma_support(p); |
| 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 device *dev, |
| int irqflags) |
| { |
| 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; |
| struct platform_device *pdev = NULL; |
| int ret; |
| |
| if (!dev) { |
| /* We need a physical device to attach to, but none was |
| * provided. Create our own. */ |
| pdev = platform_device_register_simple("parport_pc", |
| base, NULL, 0); |
| if (IS_ERR(pdev)) |
| return NULL; |
| dev = &pdev->dev; |
| |
| ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(24)); |
| if (ret) { |
| dev_err(dev, "Unable to set coherent dma mask: disabling DMA\n"); |
| dma = PARPORT_DMA_NONE; |
| } |
| } |
| |
| 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; |
| INIT_LIST_HEAD(&priv->list); |
| priv->port = p; |
| |
| p->dev = dev; |
| 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(KERN_CONT " (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(KERN_CONT ", 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(KERN_CONT ", dma %d", p->dma); |
| p->modes |= PARPORT_MODE_DMA; |
| } else |
| printk(KERN_CONT ", using FIFO"); |
| } else |
| /* We can't use the DMA channel after all. */ |
| p->dma = PARPORT_DMA_NONE; |
| #endif /* Allowed to use FIFO/DMA */ |
| |
| printk(KERN_CONT " ["); |
| |
| #define printmode(x) \ |
| {\ |
| if (p->modes & PARPORT_MODE_##x) {\ |
| printk(KERN_CONT "%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(KERN_CONT "(,...)"); |
| #endif /* CONFIG_PARPORT_1284 */ |
| printk(KERN_CONT "]\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_irq_handler, |
| irqflags, 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 = |
| dma_alloc_coherent(dev, |
| PAGE_SIZE, |
| &priv->dma_handle, |
| GFP_KERNEL); |
| 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_del_port(p); |
| out3: |
| kfree(priv); |
| out2: |
| kfree(ops); |
| out1: |
| if (pdev) |
| platform_device_unregister(pdev); |
| 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) |
| dma_free_coherent(p->physport->dev, PAGE_SIZE, |
| priv->dma_buf, |
| priv->dma_handle); |
| #endif |
| kfree(p->private_data); |
| parport_del_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 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 }; |
| u32 ite8872set; |
| u32 ite8872_lpt, ite8872_lpthi; |
| u8 ite8872_irq, type; |
| int irq; |
| int i; |
| |
| DPRINTK(KERN_DEBUG "sio_ite_8872_probe()\n"); |
| |
| /* make sure which one chip */ |
| for (i = 0; i < 5; i++) { |
| if (request_region(inta_addr[i], 32, "it887x")) { |
| int test; |
| pci_write_config_dword(pdev, 0x60, |
| 0xe5000000 | 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], 32); |
| } |
| } |
| 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"); |
| release_region(inta_addr[i], 32); |
| return 0; |
| case 0x8: |
| printk(KERN_INFO "parport_pc: ITE8874 found (2S)\n"); |
| release_region(inta_addr[i], 32); |
| 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"); |
| release_region(inta_addr[i], 32); |
| 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_region(inta_addr[i], 32); |
| if (parport_pc_probe_port(ite8872_lpt, ite8872_lpthi, |
| irq, PARPORT_DMA_NONE, &pdev->dev, 0)) { |
| printk(KERN_INFO |
| "parport_pc: ITE 8872 parallel port: io=0x%X", |
| ite8872_lpt); |
| if (irq != PARPORT_IRQ_NONE) |
| pr_cont(", irq=%d", irq); |
| pr_cont("\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 parport_init_mode; |
| |
| /* Data for two known VIA chips */ |
| static struct parport_pc_via_data via_686a_data = { |
| 0x51, |
| 0x50, |
| 0x85, |
| 0x02, |
| 0xE2, |
| 0xF0, |
| 0xE6 |
| }; |
| static struct parport_pc_via_data via_8231_data = { |
| 0x45, |
| 0x44, |
| 0x50, |
| 0x04, |
| 0xF2, |
| 0xFA, |
| 0xF6 |
| }; |
| |
| static int 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, &pdev->dev, 0)) { |
| printk(KERN_INFO |
| "parport_pc: VIA parallel port: io=0x%X", port1); |
| if (irq != PARPORT_IRQ_NONE) |
| pr_cont(", irq=%d", irq); |
| if (dma != PARPORT_DMA_NONE) |
| pr_cont(", dma=%d", dma); |
| pr_cont("\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[] = { |
| { 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_4006a, |
| timedia_4014, |
| timedia_4008a, |
| timedia_4018, |
| timedia_9018a, |
| syba_2p_epp, |
| syba_1p_ecp, |
| titan_010l, |
| avlab_1p, |
| avlab_2p, |
| oxsemi_952, |
| oxsemi_954, |
| oxsemi_840, |
| oxsemi_pcie_pport, |
| aks_0100, |
| mobility_pp, |
| netmos_9705, |
| netmos_9715, |
| netmos_9755, |
| netmos_9805, |
| netmos_9815, |
| netmos_9901, |
| netmos_9865, |
| quatech_sppxp100, |
| wch_ch382l, |
| }; |
| |
| |
| /* 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_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 }, } }, |
| /* 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_952 */ { 1, { { 0, 1 }, } }, |
| /* oxsemi_954 */ { 1, { { 0, -1 }, } }, |
| /* oxsemi_840 */ { 1, { { 0, 1 }, } }, |
| /* oxsemi_pcie_pport */ { 1, { { 0, 1 }, } }, |
| /* aks_0100 */ { 1, { { 0, -1 }, } }, |
| /* mobility_pp */ { 1, { { 0, 1 }, } }, |
| |
| /* The netmos entries below are untested */ |
| /* netmos_9705 */ { 1, { { 0, -1 }, } }, |
| /* netmos_9715 */ { 2, { { 0, 1 }, { 2, 3 },} }, |
| /* netmos_9755 */ { 2, { { 0, 1 }, { 2, 3 },} }, |
| /* netmos_9805 */ { 1, { { 0, 1 }, } }, |
| /* netmos_9815 */ { 2, { { 0, 1 }, { 2, 3 }, } }, |
| /* netmos_9901 */ { 1, { { 0, -1 }, } }, |
| /* netmos_9865 */ { 1, { { 0, -1 }, } }, |
| /* quatech_sppxp100 */ { 1, { { 0, 1 }, } }, |
| /* wch_ch382l */ { 1, { { 2, -1 }, } }, |
| }; |
| |
| 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, 0x7268, 0x1409, 0x0101, 0, 0, timedia_4006a }, |
| { 0x1409, 0x7268, 0x1409, 0x0102, 0, 0, timedia_4014 }, |
| { 0x1409, 0x7268, 0x1409, 0x0103, 0, 0, timedia_4008a }, |
| { 0x1409, 0x7268, 0x1409, 0x0104, 0, 0, timedia_4018 }, |
| { 0x1409, 0x7268, 0x1409, 0x9018, 0, 0, timedia_9018a }, |
| { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_2P_EPP, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_2p_epp }, |
| { PCI_VENDOR_ID_SYBA, PCI_DEVICE_ID_SYBA_1P_ECP, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, syba_1p_ecp }, |
| { PCI_VENDOR_ID_TITAN, PCI_DEVICE_ID_TITAN_010L, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, titan_010l }, |
| /* PCI_VENDOR_ID_AVLAB/Intek21 has another bunch of cards ...*/ |
| /* AFAVLAB_TK9902 */ |
| { 0x14db, 0x2120, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_1p}, |
| { 0x14db, 0x2121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, avlab_2p}, |
| { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_16PCI952PP, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_952 }, |
| { 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_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe840, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport }, |
| { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe840_G, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport }, |
| { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_0, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport }, |
| { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_0_G, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport }, |
| { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport }, |
| { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_G, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport }, |
| { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_U, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport }, |
| { PCI_VENDOR_ID_OXSEMI, PCI_DEVICE_ID_OXSEMI_PCIe952_1_GU, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, oxsemi_pcie_pport }, |
| { PCI_VENDOR_ID_AKS, PCI_DEVICE_ID_AKS_ALADDINCARD, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, aks_0100 }, |
| { 0x14f2, 0x0121, PCI_ANY_ID, PCI_ANY_ID, 0, 0, mobility_pp }, |
| /* 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 }, |
| { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9901, |
| 0xA000, 0x2000, 0, 0, netmos_9901 }, |
| { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9865, |
| 0xA000, 0x1000, 0, 0, netmos_9865 }, |
| { PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9865, |
| 0xA000, 0x2000, 0, 0, netmos_9865 }, |
| /* Quatech SPPXP-100 Parallel port PCI ExpressCard */ |
| { PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_SPPXP_100, |
| PCI_ANY_ID, PCI_ANY_ID, 0, 0, quatech_sppxp100 }, |
| /* WCH CH382L PCI-E single parallel port card */ |
| { 0x1c00, 0x3050, 0x1c00, 0x3050, 0, 0, wch_ch382l }, |
| { 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; |
| err = pci_enable_device(dev); |
| if (err) |
| 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; |
| int irq; |
| 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 */ |
| irq = dev->irq; |
| if (irq == IRQ_NONE) { |
| printk(KERN_DEBUG |
| "PCI parallel port detected: %04x:%04x, I/O at %#lx(%#lx)\n", |
| id->vendor, id->device, io_lo, io_hi); |
| irq = PARPORT_IRQ_NONE; |
| } else { |
| printk(KERN_DEBUG |
| "PCI parallel port detected: %04x:%04x, I/O at %#lx(%#lx), IRQ %d\n", |
| id->vendor, id->device, io_lo, io_hi, irq); |
| } |
| data->ports[count] = |
| parport_pc_probe_port(io_lo, io_hi, irq, |
| PARPORT_DMA_NONE, &dev->dev, |
| IRQF_SHARED); |
| 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 parport_pc_pci_remove(struct pci_dev *dev) |
| { |
| struct pci_parport_data *data = pci_get_drvdata(dev); |
| int i; |
| |
| 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 = 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 */ |
| |
| #ifdef CONFIG_PNP |
| |
| 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; |
| |
| dev_info(&dev->dev, "reported by %s\n", dev->protocol->name); |
| pdata = parport_pc_probe_port(io_lo, io_hi, irq, dma, &dev->dev, 0); |
| if (pdata == 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, |
| }; |
| |
| #else |
| static struct pnp_driver parport_pc_pnp_driver; |
| #endif /* CONFIG_PNP */ |
| |
| static int parport_pc_platform_probe(struct platform_device *pdev) |
| { |
| /* Always succeed, the actual probing is done in |
| * parport_pc_probe_port(). */ |
| return 0; |
| } |
| |
| static struct platform_driver parport_pc_platform_driver = { |
| .driver = { |
| .name = "parport_pc", |
| }, |
| .probe = parport_pc_platform_probe, |
| }; |
| |
| /* This is called by parport_pc_find_nonpci_ports (in asm/parport.h) */ |
| static int __attribute__((unused)) |
| parport_pc_find_isa_ports(int autoirq, int autodma) |
| { |
| int count = 0; |
| |
| if (parport_pc_probe_port(0x3bc, 0x7bc, autoirq, autodma, NULL, 0)) |
| count++; |
| if (parport_pc_probe_port(0x378, 0x778, autoirq, autodma, NULL, 0)) |
| count++; |
| if (parport_pc_probe_port(0x278, 0x678, autoirq, autodma, NULL, 0)) |
| 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_it87(); |
| 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", 6)) |
| *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 char *irq[PARPORT_PC_MAX_PORTS]; |
| static char *dma[PARPORT_PC_MAX_PORTS]; |
| |
| MODULE_PARM_DESC(io, "Base I/O address (SPP regs)"); |
| module_param_hw_array(io, int, ioport, NULL, 0); |
| MODULE_PARM_DESC(io_hi, "Base I/O address (ECR)"); |
| module_param_hw_array(io_hi, int, ioport, NULL, 0); |
| MODULE_PARM_DESC(irq, "IRQ line"); |
| module_param_hw_array(irq, charp, irq, NULL, 0); |
| MODULE_PARM_DESC(dma, "DMA channel"); |
| module_param_hw_array(dma, charp, dma, 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; |
| |
| /* |
| * 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) |
| { |
| int err; |
| |
| if (parse_parport_params()) |
| return -EINVAL; |
| |
| err = platform_driver_register(&parport_pc_platform_driver); |
| if (err) |
| return err; |
| |
| 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, 0); |
| } |
| } 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); |
| platform_driver_unregister(&parport_pc_platform_driver); |
| |
| while (!list_empty(&ports_list)) { |
| struct parport_pc_private *priv; |
| struct parport *port; |
| struct device *dev; |
| priv = list_entry(ports_list.next, |
| struct parport_pc_private, list); |
| port = priv->port; |
| dev = port->dev; |
| parport_pc_unregister_port(port); |
| if (dev && dev->bus == &platform_bus_type) |
| platform_device_unregister(to_platform_device(dev)); |
| } |
| } |
| |
| 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) |