/* * pata-legacy.c - Legacy port PATA/SATA controller driver. * Copyright 2005/2006 Red Hat <alan@redhat.com>, all rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; see the file COPYING. If not, write to * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. * * An ATA driver for the legacy ATA ports. * * Data Sources: * Opti 82C465/82C611 support: Data sheets at opti-inc.com * HT6560 series: * Promise 20230/20620: * http://www.ryston.cz/petr/vlb/pdc20230b.html * http://www.ryston.cz/petr/vlb/pdc20230c.html * http://www.ryston.cz/petr/vlb/pdc20630.html * * Unsupported but docs exist: * Appian/Adaptec AIC25VL01/Cirrus Logic PD7220 * * This driver handles legacy (that is "ISA/VLB side") IDE ports found * on PC class systems. There are three hybrid devices that are exceptions * The Cyrix 5510/5520 where a pre SFF ATA device is on the bridge and * the MPIIX where the tuning is PCI side but the IDE is "ISA side". * * Specific support is included for the ht6560a/ht6560b/opti82c611a/ * opti82c465mv/promise 20230c/20630/winbond83759A * * Use the autospeed and pio_mask options with: * Appian ADI/2 aka CLPD7220 or AIC25VL01. * Use the jumpers, autospeed and set pio_mask to the mode on the jumpers with * Goldstar GM82C711, PIC-1288A-125, UMC 82C871F, Winbond W83759, * Winbond W83759A, Promise PDC20230-B * * For now use autospeed and pio_mask as above with the W83759A. This may * change. * */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <scsi/scsi_host.h> #include <linux/ata.h> #include <linux/libata.h> #include <linux/platform_device.h> #define DRV_NAME "pata_legacy" #define DRV_VERSION "0.6.5" #define NR_HOST 6 static int all; module_param(all, int, 0444); MODULE_PARM_DESC(all, "Grab all legacy port devices, even if PCI(0=off, 1=on)"); struct legacy_data { unsigned long timing; u8 clock[2]; u8 last; int fast; struct platform_device *platform_dev; }; enum controller { BIOS = 0, SNOOP = 1, PDC20230 = 2, HT6560A = 3, HT6560B = 4, OPTI611A = 5, OPTI46X = 6, QDI6500 = 7, QDI6580 = 8, QDI6580DP = 9, /* Dual channel mode is different */ W83759A = 10, UNKNOWN = -1 }; struct legacy_probe { unsigned char *name; unsigned long port; unsigned int irq; unsigned int slot; enum controller type; unsigned long private; }; struct legacy_controller { const char *name; struct ata_port_operations *ops; unsigned int pio_mask; unsigned int flags; int (*setup)(struct platform_device *, struct legacy_probe *probe, struct legacy_data *data); }; static int legacy_port[NR_HOST] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 }; static struct legacy_probe probe_list[NR_HOST]; static struct legacy_data legacy_data[NR_HOST]; static struct ata_host *legacy_host[NR_HOST]; static int nr_legacy_host; static int probe_all; /* Set to check all ISA port ranges */ static int ht6560a; /* HT 6560A on primary 1, second 2, both 3 */ static int ht6560b; /* HT 6560A on primary 1, second 2, both 3 */ static int opti82c611a; /* Opti82c611A on primary 1, sec 2, both 3 */ static int opti82c46x; /* Opti 82c465MV present(pri/sec autodetect) */ static int qdi; /* Set to probe QDI controllers */ static int winbond; /* Set to probe Winbond controllers, give I/O port if non standard */ static int autospeed; /* Chip present which snoops speed changes */ static int pio_mask = 0x1F; /* PIO range for autospeed devices */ static int iordy_mask = 0xFFFFFFFF; /* Use iordy if available */ /** * legacy_probe_add - Add interface to probe list * @port: Controller port * @irq: IRQ number * @type: Controller type * @private: Controller specific info * * Add an entry into the probe list for ATA controllers. This is used * to add the default ISA slots and then to build up the table * further according to other ISA/VLB/Weird device scans * * An I/O port list is used to keep ordering stable and sane, as we * don't have any good way to talk about ordering otherwise */ static int legacy_probe_add(unsigned long port, unsigned int irq, enum controller type, unsigned long private) { struct legacy_probe *lp = &probe_list[0]; int i; struct legacy_probe *free = NULL; for (i = 0; i < NR_HOST; i++) { if (lp->port == 0 && free == NULL) free = lp; /* Matching port, or the correct slot for ordering */ if (lp->port == port || legacy_port[i] == port) { free = lp; break; } lp++; } if (free == NULL) { printk(KERN_ERR "pata_legacy: Too many interfaces.\n"); return -1; } /* Fill in the entry for later probing */ free->port = port; free->irq = irq; free->type = type; free->private = private; return 0; } /** * legacy_set_mode - mode setting * @link: IDE link * @unused: Device that failed when error is returned * * Use a non standard set_mode function. We don't want to be tuned. * * The BIOS configured everything. Our job is not to fiddle. Just use * whatever PIO the hardware is using and leave it at that. When we * get some kind of nice user driven API for control then we can * expand on this as per hdparm in the base kernel. */ static int legacy_set_mode(struct ata_link *link, struct ata_device **unused) { struct ata_device *dev; ata_link_for_each_dev(dev, link) { if (ata_dev_enabled(dev)) { ata_dev_printk(dev, KERN_INFO, "configured for PIO\n"); dev->pio_mode = XFER_PIO_0; dev->xfer_mode = XFER_PIO_0; dev->xfer_shift = ATA_SHIFT_PIO; dev->flags |= ATA_DFLAG_PIO; } } return 0; } static struct scsi_host_template legacy_sht = { ATA_PIO_SHT(DRV_NAME), }; static const struct ata_port_operations legacy_base_port_ops = { .inherits = &ata_sff_port_ops, .cable_detect = ata_cable_40wire, }; /* * These ops are used if the user indicates the hardware * snoops the commands to decide on the mode and handles the * mode selection "magically" itself. Several legacy controllers * do this. The mode range can be set if it is not 0x1F by setting * pio_mask as well. */ static struct ata_port_operations simple_port_ops = { .inherits = &legacy_base_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, }; static struct ata_port_operations legacy_port_ops = { .inherits = &legacy_base_port_ops, .sff_data_xfer = ata_sff_data_xfer_noirq, .set_mode = legacy_set_mode, }; /* * Promise 20230C and 20620 support * * This controller supports PIO0 to PIO2. We set PIO timings * conservatively to allow for 50MHz Vesa Local Bus. The 20620 DMA * support is weird being DMA to controller and PIO'd to the host * and not supported. */ static void pdc20230_set_piomode(struct ata_port *ap, struct ata_device *adev) { int tries = 5; int pio = adev->pio_mode - XFER_PIO_0; u8 rt; unsigned long flags; /* Safe as UP only. Force I/Os to occur together */ local_irq_save(flags); /* Unlock the control interface */ do { inb(0x1F5); outb(inb(0x1F2) | 0x80, 0x1F2); inb(0x1F2); inb(0x3F6); inb(0x3F6); inb(0x1F2); inb(0x1F2); } while ((inb(0x1F2) & 0x80) && --tries); local_irq_restore(flags); outb(inb(0x1F4) & 0x07, 0x1F4); rt = inb(0x1F3); rt &= 0x07 << (3 * adev->devno); if (pio) rt |= (1 + 3 * pio) << (3 * adev->devno); udelay(100); outb(inb(0x1F2) | 0x01, 0x1F2); udelay(100); inb(0x1F5); } static unsigned int pdc_data_xfer_vlb(struct ata_device *dev, unsigned char *buf, unsigned int buflen, int rw) { if (ata_id_has_dword_io(dev->id)) { struct ata_port *ap = dev->link->ap; int slop = buflen & 3; unsigned long flags; local_irq_save(flags); /* Perform the 32bit I/O synchronization sequence */ ioread8(ap->ioaddr.nsect_addr); ioread8(ap->ioaddr.nsect_addr); ioread8(ap->ioaddr.nsect_addr); /* Now the data */ if (rw == READ) ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); else iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { u32 pad; if (rw == READ) { pad = cpu_to_le32(ioread32(ap->ioaddr.data_addr)); memcpy(buf + buflen - slop, &pad, slop); } else { memcpy(&pad, buf + buflen - slop, slop); iowrite32(le32_to_cpu(pad), ap->ioaddr.data_addr); } buflen += 4 - slop; } local_irq_restore(flags); } else buflen = ata_sff_data_xfer_noirq(dev, buf, buflen, rw); return buflen; } static struct ata_port_operations pdc20230_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = pdc20230_set_piomode, .sff_data_xfer = pdc_data_xfer_vlb, }; /* * Holtek 6560A support * * This controller supports PIO0 to PIO2 (no IORDY even though higher * timings can be loaded). */ static void ht6560a_set_piomode(struct ata_port *ap, struct ata_device *adev) { u8 active, recover; struct ata_timing t; /* Get the timing data in cycles. For now play safe at 50Mhz */ ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000); active = clamp_val(t.active, 2, 15); recover = clamp_val(t.recover, 4, 15); inb(0x3E6); inb(0x3E6); inb(0x3E6); inb(0x3E6); iowrite8(recover << 4 | active, ap->ioaddr.device_addr); ioread8(ap->ioaddr.status_addr); } static struct ata_port_operations ht6560a_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = ht6560a_set_piomode, }; /* * Holtek 6560B support * * This controller supports PIO0 to PIO4. We honour the BIOS/jumper FIFO * setting unless we see an ATAPI device in which case we force it off. * * FIXME: need to implement 2nd channel support. */ static void ht6560b_set_piomode(struct ata_port *ap, struct ata_device *adev) { u8 active, recover; struct ata_timing t; /* Get the timing data in cycles. For now play safe at 50Mhz */ ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000); active = clamp_val(t.active, 2, 15); recover = clamp_val(t.recover, 2, 16); recover &= 0x15; inb(0x3E6); inb(0x3E6); inb(0x3E6); inb(0x3E6); iowrite8(recover << 4 | active, ap->ioaddr.device_addr); if (adev->class != ATA_DEV_ATA) { u8 rconf = inb(0x3E6); if (rconf & 0x24) { rconf &= ~0x24; outb(rconf, 0x3E6); } } ioread8(ap->ioaddr.status_addr); } static struct ata_port_operations ht6560b_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = ht6560b_set_piomode, }; /* * Opti core chipset helpers */ /** * opti_syscfg - read OPTI chipset configuration * @reg: Configuration register to read * * Returns the value of an OPTI system board configuration register. */ static u8 opti_syscfg(u8 reg) { unsigned long flags; u8 r; /* Uniprocessor chipset and must force cycles adjancent */ local_irq_save(flags); outb(reg, 0x22); r = inb(0x24); local_irq_restore(flags); return r; } /* * Opti 82C611A * * This controller supports PIO0 to PIO3. */ static void opti82c611a_set_piomode(struct ata_port *ap, struct ata_device *adev) { u8 active, recover, setup; struct ata_timing t; struct ata_device *pair = ata_dev_pair(adev); int clock; int khz[4] = { 50000, 40000, 33000, 25000 }; u8 rc; /* Enter configuration mode */ ioread16(ap->ioaddr.error_addr); ioread16(ap->ioaddr.error_addr); iowrite8(3, ap->ioaddr.nsect_addr); /* Read VLB clock strapping */ clock = 1000000000 / khz[ioread8(ap->ioaddr.lbah_addr) & 0x03]; /* Get the timing data in cycles */ ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000); /* Setup timing is shared */ if (pair) { struct ata_timing tp; ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000); ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP); } active = clamp_val(t.active, 2, 17) - 2; recover = clamp_val(t.recover, 1, 16) - 1; setup = clamp_val(t.setup, 1, 4) - 1; /* Select the right timing bank for write timing */ rc = ioread8(ap->ioaddr.lbal_addr); rc &= 0x7F; rc |= (adev->devno << 7); iowrite8(rc, ap->ioaddr.lbal_addr); /* Write the timings */ iowrite8(active << 4 | recover, ap->ioaddr.error_addr); /* Select the right bank for read timings, also load the shared timings for address */ rc = ioread8(ap->ioaddr.device_addr); rc &= 0xC0; rc |= adev->devno; /* Index select */ rc |= (setup << 4) | 0x04; iowrite8(rc, ap->ioaddr.device_addr); /* Load the read timings */ iowrite8(active << 4 | recover, ap->ioaddr.data_addr); /* Ensure the timing register mode is right */ rc = ioread8(ap->ioaddr.lbal_addr); rc &= 0x73; rc |= 0x84; iowrite8(rc, ap->ioaddr.lbal_addr); /* Exit command mode */ iowrite8(0x83, ap->ioaddr.nsect_addr); } static struct ata_port_operations opti82c611a_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = opti82c611a_set_piomode, }; /* * Opti 82C465MV * * This controller supports PIO0 to PIO3. Unlike the 611A the MVB * version is dual channel but doesn't have a lot of unique registers. */ static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev) { u8 active, recover, setup; struct ata_timing t; struct ata_device *pair = ata_dev_pair(adev); int clock; int khz[4] = { 50000, 40000, 33000, 25000 }; u8 rc; u8 sysclk; /* Get the clock */ sysclk = opti_syscfg(0xAC) & 0xC0; /* BIOS set */ /* Enter configuration mode */ ioread16(ap->ioaddr.error_addr); ioread16(ap->ioaddr.error_addr); iowrite8(3, ap->ioaddr.nsect_addr); /* Read VLB clock strapping */ clock = 1000000000 / khz[sysclk]; /* Get the timing data in cycles */ ata_timing_compute(adev, adev->pio_mode, &t, clock, 1000); /* Setup timing is shared */ if (pair) { struct ata_timing tp; ata_timing_compute(pair, pair->pio_mode, &tp, clock, 1000); ata_timing_merge(&t, &tp, &t, ATA_TIMING_SETUP); } active = clamp_val(t.active, 2, 17) - 2; recover = clamp_val(t.recover, 1, 16) - 1; setup = clamp_val(t.setup, 1, 4) - 1; /* Select the right timing bank for write timing */ rc = ioread8(ap->ioaddr.lbal_addr); rc &= 0x7F; rc |= (adev->devno << 7); iowrite8(rc, ap->ioaddr.lbal_addr); /* Write the timings */ iowrite8(active << 4 | recover, ap->ioaddr.error_addr); /* Select the right bank for read timings, also load the shared timings for address */ rc = ioread8(ap->ioaddr.device_addr); rc &= 0xC0; rc |= adev->devno; /* Index select */ rc |= (setup << 4) | 0x04; iowrite8(rc, ap->ioaddr.device_addr); /* Load the read timings */ iowrite8(active << 4 | recover, ap->ioaddr.data_addr); /* Ensure the timing register mode is right */ rc = ioread8(ap->ioaddr.lbal_addr); rc &= 0x73; rc |= 0x84; iowrite8(rc, ap->ioaddr.lbal_addr); /* Exit command mode */ iowrite8(0x83, ap->ioaddr.nsect_addr); /* We need to know this for quad device on the MVB */ ap->host->private_data = ap; } /** * opt82c465mv_qc_issue - command issue * @qc: command pending * * Called when the libata layer is about to issue a command. We wrap * this interface so that we can load the correct ATA timings. The * MVB has a single set of timing registers and these are shared * across channels. As there are two registers we really ought to * track the last two used values as a sort of register window. For * now we just reload on a channel switch. On the single channel * setup this condition never fires so we do nothing extra. * * FIXME: dual channel needs ->serialize support */ static unsigned int opti82c46x_qc_issue(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct ata_device *adev = qc->dev; /* If timings are set and for the wrong channel (2nd test is due to a libata shortcoming and will eventually go I hope) */ if (ap->host->private_data != ap->host && ap->host->private_data != NULL) opti82c46x_set_piomode(ap, adev); return ata_sff_qc_issue(qc); } static struct ata_port_operations opti82c46x_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = opti82c46x_set_piomode, .qc_issue = opti82c46x_qc_issue, }; static void qdi6500_set_piomode(struct ata_port *ap, struct ata_device *adev) { struct ata_timing t; struct legacy_data *ld_qdi = ap->host->private_data; int active, recovery; u8 timing; /* Get the timing data in cycles */ ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); if (ld_qdi->fast) { active = 8 - clamp_val(t.active, 1, 8); recovery = 18 - clamp_val(t.recover, 3, 18); } else { active = 9 - clamp_val(t.active, 2, 9); recovery = 15 - clamp_val(t.recover, 0, 15); } timing = (recovery << 4) | active | 0x08; ld_qdi->clock[adev->devno] = timing; outb(timing, ld_qdi->timing); } /** * qdi6580dp_set_piomode - PIO setup for dual channel * @ap: Port * @adev: Device * @irq: interrupt line * * In dual channel mode the 6580 has one clock per channel and we have * to software clockswitch in qc_issue. */ static void qdi6580dp_set_piomode(struct ata_port *ap, struct ata_device *adev) { struct ata_timing t; struct legacy_data *ld_qdi = ap->host->private_data; int active, recovery; u8 timing; /* Get the timing data in cycles */ ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); if (ld_qdi->fast) { active = 8 - clamp_val(t.active, 1, 8); recovery = 18 - clamp_val(t.recover, 3, 18); } else { active = 9 - clamp_val(t.active, 2, 9); recovery = 15 - clamp_val(t.recover, 0, 15); } timing = (recovery << 4) | active | 0x08; ld_qdi->clock[adev->devno] = timing; outb(timing, ld_qdi->timing + 2 * ap->port_no); /* Clear the FIFO */ if (adev->class != ATA_DEV_ATA) outb(0x5F, ld_qdi->timing + 3); } /** * qdi6580_set_piomode - PIO setup for single channel * @ap: Port * @adev: Device * * In single channel mode the 6580 has one clock per device and we can * avoid the requirement to clock switch. We also have to load the timing * into the right clock according to whether we are master or slave. */ static void qdi6580_set_piomode(struct ata_port *ap, struct ata_device *adev) { struct ata_timing t; struct legacy_data *ld_qdi = ap->host->private_data; int active, recovery; u8 timing; /* Get the timing data in cycles */ ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); if (ld_qdi->fast) { active = 8 - clamp_val(t.active, 1, 8); recovery = 18 - clamp_val(t.recover, 3, 18); } else { active = 9 - clamp_val(t.active, 2, 9); recovery = 15 - clamp_val(t.recover, 0, 15); } timing = (recovery << 4) | active | 0x08; ld_qdi->clock[adev->devno] = timing; outb(timing, ld_qdi->timing + 2 * adev->devno); /* Clear the FIFO */ if (adev->class != ATA_DEV_ATA) outb(0x5F, ld_qdi->timing + 3); } /** * qdi_qc_issue - command issue * @qc: command pending * * Called when the libata layer is about to issue a command. We wrap * this interface so that we can load the correct ATA timings. */ static unsigned int qdi_qc_issue(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct ata_device *adev = qc->dev; struct legacy_data *ld_qdi = ap->host->private_data; if (ld_qdi->clock[adev->devno] != ld_qdi->last) { if (adev->pio_mode) { ld_qdi->last = ld_qdi->clock[adev->devno]; outb(ld_qdi->clock[adev->devno], ld_qdi->timing + 2 * ap->port_no); } } return ata_sff_qc_issue(qc); } static unsigned int vlb32_data_xfer(struct ata_device *adev, unsigned char *buf, unsigned int buflen, int rw) { struct ata_port *ap = adev->link->ap; int slop = buflen & 3; if (ata_id_has_dword_io(adev->id)) { if (rw == WRITE) iowrite32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); else ioread32_rep(ap->ioaddr.data_addr, buf, buflen >> 2); if (unlikely(slop)) { u32 pad; if (rw == WRITE) { memcpy(&pad, buf + buflen - slop, slop); pad = le32_to_cpu(pad); iowrite32(pad, ap->ioaddr.data_addr); } else { pad = ioread32(ap->ioaddr.data_addr); pad = cpu_to_le32(pad); memcpy(buf + buflen - slop, &pad, slop); } } return (buflen + 3) & ~3; } else return ata_sff_data_xfer(adev, buf, buflen, rw); } static int qdi_port(struct platform_device *dev, struct legacy_probe *lp, struct legacy_data *ld) { if (devm_request_region(&dev->dev, lp->private, 4, "qdi") == NULL) return -EBUSY; ld->timing = lp->private; return 0; } static struct ata_port_operations qdi6500_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = qdi6500_set_piomode, .qc_issue = qdi_qc_issue, .sff_data_xfer = vlb32_data_xfer, }; static struct ata_port_operations qdi6580_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = qdi6580_set_piomode, .sff_data_xfer = vlb32_data_xfer, }; static struct ata_port_operations qdi6580dp_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = qdi6580dp_set_piomode, .sff_data_xfer = vlb32_data_xfer, }; static DEFINE_SPINLOCK(winbond_lock); static void winbond_writecfg(unsigned long port, u8 reg, u8 val) { unsigned long flags; spin_lock_irqsave(&winbond_lock, flags); outb(reg, port + 0x01); outb(val, port + 0x02); spin_unlock_irqrestore(&winbond_lock, flags); } static u8 winbond_readcfg(unsigned long port, u8 reg) { u8 val; unsigned long flags; spin_lock_irqsave(&winbond_lock, flags); outb(reg, port + 0x01); val = inb(port + 0x02); spin_unlock_irqrestore(&winbond_lock, flags); return val; } static void winbond_set_piomode(struct ata_port *ap, struct ata_device *adev) { struct ata_timing t; struct legacy_data *ld_winbond = ap->host->private_data; int active, recovery; u8 reg; int timing = 0x88 + (ap->port_no * 4) + (adev->devno * 2); reg = winbond_readcfg(ld_winbond->timing, 0x81); /* Get the timing data in cycles */ if (reg & 0x40) /* Fast VLB bus, assume 50MHz */ ata_timing_compute(adev, adev->pio_mode, &t, 20000, 1000); else ata_timing_compute(adev, adev->pio_mode, &t, 30303, 1000); active = (clamp_val(t.active, 3, 17) - 1) & 0x0F; recovery = (clamp_val(t.recover, 1, 15) + 1) & 0x0F; timing = (active << 4) | recovery; winbond_writecfg(ld_winbond->timing, timing, reg); /* Load the setup timing */ reg = 0x35; if (adev->class != ATA_DEV_ATA) reg |= 0x08; /* FIFO off */ if (!ata_pio_need_iordy(adev)) reg |= 0x02; /* IORDY off */ reg |= (clamp_val(t.setup, 0, 3) << 6); winbond_writecfg(ld_winbond->timing, timing + 1, reg); } static int winbond_port(struct platform_device *dev, struct legacy_probe *lp, struct legacy_data *ld) { if (devm_request_region(&dev->dev, lp->private, 4, "winbond") == NULL) return -EBUSY; ld->timing = lp->private; return 0; } static struct ata_port_operations winbond_port_ops = { .inherits = &legacy_base_port_ops, .set_piomode = winbond_set_piomode, .sff_data_xfer = vlb32_data_xfer, }; static struct legacy_controller controllers[] = { {"BIOS", &legacy_port_ops, 0x1F, ATA_FLAG_NO_IORDY, NULL }, {"Snooping", &simple_port_ops, 0x1F, 0 , NULL }, {"PDC20230", &pdc20230_port_ops, 0x7, ATA_FLAG_NO_IORDY, NULL }, {"HT6560A", &ht6560a_port_ops, 0x07, ATA_FLAG_NO_IORDY, NULL }, {"HT6560B", &ht6560b_port_ops, 0x1F, ATA_FLAG_NO_IORDY, NULL }, {"OPTI82C611A", &opti82c611a_port_ops, 0x0F, 0 , NULL }, {"OPTI82C46X", &opti82c46x_port_ops, 0x0F, 0 , NULL }, {"QDI6500", &qdi6500_port_ops, 0x07, ATA_FLAG_NO_IORDY, qdi_port }, {"QDI6580", &qdi6580_port_ops, 0x1F, 0 , qdi_port }, {"QDI6580DP", &qdi6580dp_port_ops, 0x1F, 0 , qdi_port }, {"W83759A", &winbond_port_ops, 0x1F, 0 , winbond_port } }; /** * probe_chip_type - Discover controller * @probe: Probe entry to check * * Probe an ATA port and identify the type of controller. We don't * check if the controller appears to be driveless at this point. */ static __init int probe_chip_type(struct legacy_probe *probe) { int mask = 1 << probe->slot; if (winbond && (probe->port == 0x1F0 || probe->port == 0x170)) { u8 reg = winbond_readcfg(winbond, 0x81); reg |= 0x80; /* jumpered mode off */ winbond_writecfg(winbond, 0x81, reg); reg = winbond_readcfg(winbond, 0x83); reg |= 0xF0; /* local control */ winbond_writecfg(winbond, 0x83, reg); reg = winbond_readcfg(winbond, 0x85); reg |= 0xF0; /* programmable timing */ winbond_writecfg(winbond, 0x85, reg); reg = winbond_readcfg(winbond, 0x81); if (reg & mask) return W83759A; } if (probe->port == 0x1F0) { unsigned long flags; local_irq_save(flags); /* Probes */ outb(inb(0x1F2) | 0x80, 0x1F2); inb(0x1F5); inb(0x1F2); inb(0x3F6); inb(0x3F6); inb(0x1F2); inb(0x1F2); if ((inb(0x1F2) & 0x80) == 0) { /* PDC20230c or 20630 ? */ printk(KERN_INFO "PDC20230-C/20630 VLB ATA controller" " detected.\n"); udelay(100); inb(0x1F5); local_irq_restore(flags); return PDC20230; } else { outb(0x55, 0x1F2); inb(0x1F2); inb(0x1F2); if (inb(0x1F2) == 0x00) printk(KERN_INFO "PDC20230-B VLB ATA " "controller detected.\n"); local_irq_restore(flags); return BIOS; } local_irq_restore(flags); } if (ht6560a & mask) return HT6560A; if (ht6560b & mask) return HT6560B; if (opti82c611a & mask) return OPTI611A; if (opti82c46x & mask) return OPTI46X; if (autospeed & mask) return SNOOP; return BIOS; } /** * legacy_init_one - attach a legacy interface * @pl: probe record * * Register an ISA bus IDE interface. Such interfaces are PIO and we * assume do not support IRQ sharing. */ static __init int legacy_init_one(struct legacy_probe *probe) { struct legacy_controller *controller = &controllers[probe->type]; int pio_modes = controller->pio_mask; unsigned long io = probe->port; u32 mask = (1 << probe->slot); struct ata_port_operations *ops = controller->ops; struct legacy_data *ld = &legacy_data[probe->slot]; struct ata_host *host = NULL; struct ata_port *ap; struct platform_device *pdev; struct ata_device *dev; void __iomem *io_addr, *ctrl_addr; u32 iordy = (iordy_mask & mask) ? 0: ATA_FLAG_NO_IORDY; int ret; iordy |= controller->flags; pdev = platform_device_register_simple(DRV_NAME, probe->slot, NULL, 0); if (IS_ERR(pdev)) return PTR_ERR(pdev); ret = -EBUSY; if (devm_request_region(&pdev->dev, io, 8, "pata_legacy") == NULL || devm_request_region(&pdev->dev, io + 0x0206, 1, "pata_legacy") == NULL) goto fail; ret = -ENOMEM; io_addr = devm_ioport_map(&pdev->dev, io, 8); ctrl_addr = devm_ioport_map(&pdev->dev, io + 0x0206, 1); if (!io_addr || !ctrl_addr) goto fail; if (controller->setup) if (controller->setup(pdev, probe, ld) < 0) goto fail; host = ata_host_alloc(&pdev->dev, 1); if (!host) goto fail; ap = host->ports[0]; ap->ops = ops; ap->pio_mask = pio_modes; ap->flags |= ATA_FLAG_SLAVE_POSS | iordy; ap->ioaddr.cmd_addr = io_addr; ap->ioaddr.altstatus_addr = ctrl_addr; ap->ioaddr.ctl_addr = ctrl_addr; ata_sff_std_ports(&ap->ioaddr); ap->host->private_data = ld; ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", io, io + 0x0206); ret = ata_host_activate(host, probe->irq, ata_sff_interrupt, 0, &legacy_sht); if (ret) goto fail; ld->platform_dev = pdev; /* Nothing found means we drop the port as its probably not there */ ret = -ENODEV; ata_link_for_each_dev(dev, &ap->link) { if (!ata_dev_absent(dev)) { legacy_host[probe->slot] = host; ld->platform_dev = pdev; return 0; } } fail: platform_device_unregister(pdev); return ret; } /** * legacy_check_special_cases - ATA special cases * @p: PCI device to check * @master: set this if we find an ATA master * @master: set this if we find an ATA secondary * * A small number of vendors implemented early PCI ATA interfaces * on bridge logic without the ATA interface being PCI visible. * Where we have a matching PCI driver we must skip the relevant * device here. If we don't know about it then the legacy driver * is the right driver anyway. */ static void __init legacy_check_special_cases(struct pci_dev *p, int *primary, int *secondary) { /* Cyrix CS5510 pre SFF MWDMA ATA on the bridge */ if (p->vendor == 0x1078 && p->device == 0x0000) { *primary = *secondary = 1; return; } /* Cyrix CS5520 pre SFF MWDMA ATA on the bridge */ if (p->vendor == 0x1078 && p->device == 0x0002) { *primary = *secondary = 1; return; } /* Intel MPIIX - PIO ATA on non PCI side of bridge */ if (p->vendor == 0x8086 && p->device == 0x1234) { u16 r; pci_read_config_word(p, 0x6C, &r); if (r & 0x8000) { /* ATA port enabled */ if (r & 0x4000) *secondary = 1; else *primary = 1; } return; } } static __init void probe_opti_vlb(void) { /* If an OPTI 82C46X is present find out where the channels are */ static const char *optis[4] = { "3/463MV", "5MV", "5MVA", "5MVB" }; u8 chans = 1; u8 ctrl = (opti_syscfg(0x30) & 0xC0) >> 6; opti82c46x = 3; /* Assume master and slave first */ printk(KERN_INFO DRV_NAME ": Opti 82C46%s chipset support.\n", optis[ctrl]); if (ctrl == 3) chans = (opti_syscfg(0x3F) & 0x20) ? 2 : 1; ctrl = opti_syscfg(0xAC); /* Check enabled and this port is the 465MV port. On the MVB we may have two channels */ if (ctrl & 8) { if (chans == 2) { legacy_probe_add(0x1F0, 14, OPTI46X, 0); legacy_probe_add(0x170, 15, OPTI46X, 0); } if (ctrl & 4) legacy_probe_add(0x170, 15, OPTI46X, 0); else legacy_probe_add(0x1F0, 14, OPTI46X, 0); } else legacy_probe_add(0x1F0, 14, OPTI46X, 0); } static __init void qdi65_identify_port(u8 r, u8 res, unsigned long port) { static const unsigned long ide_port[2] = { 0x170, 0x1F0 }; /* Check card type */ if ((r & 0xF0) == 0xC0) { /* QD6500: single channel */ if (r & 8) /* Disabled ? */ return; legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01), QDI6500, port); } if (((r & 0xF0) == 0xA0) || (r & 0xF0) == 0x50) { /* QD6580: dual channel */ if (!request_region(port + 2 , 2, "pata_qdi")) { release_region(port, 2); return; } res = inb(port + 3); /* Single channel mode ? */ if (res & 1) legacy_probe_add(ide_port[r & 0x01], 14 + (r & 0x01), QDI6580, port); else { /* Dual channel mode */ legacy_probe_add(0x1F0, 14, QDI6580DP, port); /* port + 0x02, r & 0x04 */ legacy_probe_add(0x170, 15, QDI6580DP, port + 2); } release_region(port + 2, 2); } } static __init void probe_qdi_vlb(void) { unsigned long flags; static const unsigned long qd_port[2] = { 0x30, 0xB0 }; int i; /* * Check each possible QD65xx base address */ for (i = 0; i < 2; i++) { unsigned long port = qd_port[i]; u8 r, res; if (request_region(port, 2, "pata_qdi")) { /* Check for a card */ local_irq_save(flags); /* I have no h/w that needs this delay but it is present in the historic code */ r = inb(port); udelay(1); outb(0x19, port); udelay(1); res = inb(port); udelay(1); outb(r, port); udelay(1); local_irq_restore(flags); /* Fail */ if (res == 0x19) { release_region(port, 2); continue; } /* Passes the presence test */ r = inb(port + 1); udelay(1); /* Check port agrees with port set */ if ((r & 2) >> 1 == i) qdi65_identify_port(r, res, port); release_region(port, 2); } } } /** * legacy_init - attach legacy interfaces * * Attach legacy IDE interfaces by scanning the usual IRQ/port suspects. * Right now we do not scan the ide0 and ide1 address but should do so * for non PCI systems or systems with no PCI IDE legacy mode devices. * If you fix that note there are special cases to consider like VLB * drivers and CS5510/20. */ static __init int legacy_init(void) { int i; int ct = 0; int primary = 0; int secondary = 0; int pci_present = 0; struct legacy_probe *pl = &probe_list[0]; int slot = 0; struct pci_dev *p = NULL; for_each_pci_dev(p) { int r; /* Check for any overlap of the system ATA mappings. Native mode controllers stuck on these addresses or some devices in 'raid' mode won't be found by the storage class test */ for (r = 0; r < 6; r++) { if (pci_resource_start(p, r) == 0x1f0) primary = 1; if (pci_resource_start(p, r) == 0x170) secondary = 1; } /* Check for special cases */ legacy_check_special_cases(p, &primary, &secondary); /* If PCI bus is present then don't probe for tertiary legacy ports */ pci_present = 1; } if (winbond == 1) winbond = 0x130; /* Default port, alt is 1B0 */ if (primary == 0 || all) legacy_probe_add(0x1F0, 14, UNKNOWN, 0); if (secondary == 0 || all) legacy_probe_add(0x170, 15, UNKNOWN, 0); if (probe_all || !pci_present) { /* ISA/VLB extra ports */ legacy_probe_add(0x1E8, 11, UNKNOWN, 0); legacy_probe_add(0x168, 10, UNKNOWN, 0); legacy_probe_add(0x1E0, 8, UNKNOWN, 0); legacy_probe_add(0x160, 12, UNKNOWN, 0); } if (opti82c46x) probe_opti_vlb(); if (qdi) probe_qdi_vlb(); for (i = 0; i < NR_HOST; i++, pl++) { if (pl->port == 0) continue; if (pl->type == UNKNOWN) pl->type = probe_chip_type(pl); pl->slot = slot++; if (legacy_init_one(pl) == 0) ct++; } if (ct != 0) return 0; return -ENODEV; } static __exit void legacy_exit(void) { int i; for (i = 0; i < nr_legacy_host; i++) { struct legacy_data *ld = &legacy_data[i]; ata_host_detach(legacy_host[i]); platform_device_unregister(ld->platform_dev); } } MODULE_AUTHOR("Alan Cox"); MODULE_DESCRIPTION("low-level driver for legacy ATA"); MODULE_LICENSE("GPL"); MODULE_VERSION(DRV_VERSION); module_param(probe_all, int, 0); module_param(autospeed, int, 0); module_param(ht6560a, int, 0); module_param(ht6560b, int, 0); module_param(opti82c611a, int, 0); module_param(opti82c46x, int, 0); module_param(qdi, int, 0); module_param(pio_mask, int, 0); module_param(iordy_mask, int, 0); module_init(legacy_init); module_exit(legacy_exit);