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-rw-r--r--drivers/ide/pdc202xx_new.c561
1 files changed, 561 insertions, 0 deletions
diff --git a/drivers/ide/pdc202xx_new.c b/drivers/ide/pdc202xx_new.c
new file mode 100644
index 000000000..b33646be6
--- /dev/null
+++ b/drivers/ide/pdc202xx_new.c
@@ -0,0 +1,561 @@
+/*
+ * Promise TX2/TX4/TX2000/133 IDE driver
+ *
+ * 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 of the License, or (at your option) any later version.
+ *
+ * Split from:
+ * linux/drivers/ide/pdc202xx.c Version 0.35 Mar. 30, 2002
+ * Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>
+ * Copyright (C) 2005-2007 MontaVista Software, Inc.
+ * Portions Copyright (C) 1999 Promise Technology, Inc.
+ * Author: Frank Tiernan (frankt@promise.com)
+ * Released under terms of General Public License
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/ide.h>
+#include <linux/ktime.h>
+
+#include <asm/io.h>
+
+#ifdef CONFIG_PPC_PMAC
+#include <asm/prom.h>
+#endif
+
+#define DRV_NAME "pdc202xx_new"
+
+#undef DEBUG
+
+#ifdef DEBUG
+#define DBG(fmt, args...) printk("%s: " fmt, __func__, ## args)
+#else
+#define DBG(fmt, args...)
+#endif
+
+static u8 max_dma_rate(struct pci_dev *pdev)
+{
+ u8 mode;
+
+ switch(pdev->device) {
+ case PCI_DEVICE_ID_PROMISE_20277:
+ case PCI_DEVICE_ID_PROMISE_20276:
+ case PCI_DEVICE_ID_PROMISE_20275:
+ case PCI_DEVICE_ID_PROMISE_20271:
+ case PCI_DEVICE_ID_PROMISE_20269:
+ mode = 4;
+ break;
+ case PCI_DEVICE_ID_PROMISE_20270:
+ case PCI_DEVICE_ID_PROMISE_20268:
+ mode = 3;
+ break;
+ default:
+ return 0;
+ }
+
+ return mode;
+}
+
+/**
+ * get_indexed_reg - Get indexed register
+ * @hwif: for the port address
+ * @index: index of the indexed register
+ */
+static u8 get_indexed_reg(ide_hwif_t *hwif, u8 index)
+{
+ u8 value;
+
+ outb(index, hwif->dma_base + 1);
+ value = inb(hwif->dma_base + 3);
+
+ DBG("index[%02X] value[%02X]\n", index, value);
+ return value;
+}
+
+/**
+ * set_indexed_reg - Set indexed register
+ * @hwif: for the port address
+ * @index: index of the indexed register
+ */
+static void set_indexed_reg(ide_hwif_t *hwif, u8 index, u8 value)
+{
+ outb(index, hwif->dma_base + 1);
+ outb(value, hwif->dma_base + 3);
+ DBG("index[%02X] value[%02X]\n", index, value);
+}
+
+/*
+ * ATA Timing Tables based on 133 MHz PLL output clock.
+ *
+ * If the PLL outputs 100 MHz clock, the ASIC hardware will set
+ * the timing registers automatically when "set features" command is
+ * issued to the device. However, if the PLL output clock is 133 MHz,
+ * the following tables must be used.
+ */
+static struct pio_timing {
+ u8 reg0c, reg0d, reg13;
+} pio_timings [] = {
+ { 0xfb, 0x2b, 0xac }, /* PIO mode 0, IORDY off, Prefetch off */
+ { 0x46, 0x29, 0xa4 }, /* PIO mode 1, IORDY off, Prefetch off */
+ { 0x23, 0x26, 0x64 }, /* PIO mode 2, IORDY off, Prefetch off */
+ { 0x27, 0x0d, 0x35 }, /* PIO mode 3, IORDY on, Prefetch off */
+ { 0x23, 0x09, 0x25 }, /* PIO mode 4, IORDY on, Prefetch off */
+};
+
+static struct mwdma_timing {
+ u8 reg0e, reg0f;
+} mwdma_timings [] = {
+ { 0xdf, 0x5f }, /* MWDMA mode 0 */
+ { 0x6b, 0x27 }, /* MWDMA mode 1 */
+ { 0x69, 0x25 }, /* MWDMA mode 2 */
+};
+
+static struct udma_timing {
+ u8 reg10, reg11, reg12;
+} udma_timings [] = {
+ { 0x4a, 0x0f, 0xd5 }, /* UDMA mode 0 */
+ { 0x3a, 0x0a, 0xd0 }, /* UDMA mode 1 */
+ { 0x2a, 0x07, 0xcd }, /* UDMA mode 2 */
+ { 0x1a, 0x05, 0xcd }, /* UDMA mode 3 */
+ { 0x1a, 0x03, 0xcd }, /* UDMA mode 4 */
+ { 0x1a, 0x02, 0xcb }, /* UDMA mode 5 */
+ { 0x1a, 0x01, 0xcb }, /* UDMA mode 6 */
+};
+
+static void pdcnew_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
+{
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
+ u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
+ const u8 speed = drive->dma_mode;
+
+ /*
+ * IDE core issues SETFEATURES_XFER to the drive first (thanks to
+ * IDE_HFLAG_POST_SET_MODE in ->host_flags). PDC202xx hardware will
+ * automatically set the timing registers based on 100 MHz PLL output.
+ *
+ * As we set up the PLL to output 133 MHz for UltraDMA/133 capable
+ * chips, we must override the default register settings...
+ */
+ if (max_dma_rate(dev) == 4) {
+ u8 mode = speed & 0x07;
+
+ if (speed >= XFER_UDMA_0) {
+ set_indexed_reg(hwif, 0x10 + adj,
+ udma_timings[mode].reg10);
+ set_indexed_reg(hwif, 0x11 + adj,
+ udma_timings[mode].reg11);
+ set_indexed_reg(hwif, 0x12 + adj,
+ udma_timings[mode].reg12);
+ } else {
+ set_indexed_reg(hwif, 0x0e + adj,
+ mwdma_timings[mode].reg0e);
+ set_indexed_reg(hwif, 0x0f + adj,
+ mwdma_timings[mode].reg0f);
+ }
+ } else if (speed == XFER_UDMA_2) {
+ /* Set tHOLD bit to 0 if using UDMA mode 2 */
+ u8 tmp = get_indexed_reg(hwif, 0x10 + adj);
+
+ set_indexed_reg(hwif, 0x10 + adj, tmp & 0x7f);
+ }
+}
+
+static void pdcnew_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
+{
+ struct pci_dev *dev = to_pci_dev(hwif->dev);
+ u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
+ const u8 pio = drive->pio_mode - XFER_PIO_0;
+
+ if (max_dma_rate(dev) == 4) {
+ set_indexed_reg(hwif, 0x0c + adj, pio_timings[pio].reg0c);
+ set_indexed_reg(hwif, 0x0d + adj, pio_timings[pio].reg0d);
+ set_indexed_reg(hwif, 0x13 + adj, pio_timings[pio].reg13);
+ }
+}
+
+static u8 pdcnew_cable_detect(ide_hwif_t *hwif)
+{
+ if (get_indexed_reg(hwif, 0x0b) & 0x04)
+ return ATA_CBL_PATA40;
+ else
+ return ATA_CBL_PATA80;
+}
+
+static void pdcnew_reset(ide_drive_t *drive)
+{
+ /*
+ * Deleted this because it is redundant from the caller.
+ */
+ printk(KERN_WARNING "pdc202xx_new: %s channel reset.\n",
+ drive->hwif->channel ? "Secondary" : "Primary");
+}
+
+/**
+ * read_counter - Read the byte count registers
+ * @dma_base: for the port address
+ */
+static long read_counter(u32 dma_base)
+{
+ u32 pri_dma_base = dma_base, sec_dma_base = dma_base + 0x08;
+ u8 cnt0, cnt1, cnt2, cnt3;
+ long count = 0, last;
+ int retry = 3;
+
+ do {
+ last = count;
+
+ /* Read the current count */
+ outb(0x20, pri_dma_base + 0x01);
+ cnt0 = inb(pri_dma_base + 0x03);
+ outb(0x21, pri_dma_base + 0x01);
+ cnt1 = inb(pri_dma_base + 0x03);
+ outb(0x20, sec_dma_base + 0x01);
+ cnt2 = inb(sec_dma_base + 0x03);
+ outb(0x21, sec_dma_base + 0x01);
+ cnt3 = inb(sec_dma_base + 0x03);
+
+ count = (cnt3 << 23) | (cnt2 << 15) | (cnt1 << 8) | cnt0;
+
+ /*
+ * The 30-bit decrementing counter is read in 4 pieces.
+ * Incorrect value may be read when the most significant bytes
+ * are changing...
+ */
+ } while (retry-- && (((last ^ count) & 0x3fff8000) || last < count));
+
+ DBG("cnt0[%02X] cnt1[%02X] cnt2[%02X] cnt3[%02X]\n",
+ cnt0, cnt1, cnt2, cnt3);
+
+ return count;
+}
+
+/**
+ * detect_pll_input_clock - Detect the PLL input clock in Hz.
+ * @dma_base: for the port address
+ * E.g. 16949000 on 33 MHz PCI bus, i.e. half of the PCI clock.
+ */
+static long detect_pll_input_clock(unsigned long dma_base)
+{
+ ktime_t start_time, end_time;
+ long start_count, end_count;
+ long pll_input, usec_elapsed;
+ u8 scr1;
+
+ start_count = read_counter(dma_base);
+ start_time = ktime_get();
+
+ /* Start the test mode */
+ outb(0x01, dma_base + 0x01);
+ scr1 = inb(dma_base + 0x03);
+ DBG("scr1[%02X]\n", scr1);
+ outb(scr1 | 0x40, dma_base + 0x03);
+
+ /* Let the counter run for 10 ms. */
+ mdelay(10);
+
+ end_count = read_counter(dma_base);
+ end_time = ktime_get();
+
+ /* Stop the test mode */
+ outb(0x01, dma_base + 0x01);
+ scr1 = inb(dma_base + 0x03);
+ DBG("scr1[%02X]\n", scr1);
+ outb(scr1 & ~0x40, dma_base + 0x03);
+
+ /*
+ * Calculate the input clock in Hz
+ * (the clock counter is 30 bit wide and counts down)
+ */
+ usec_elapsed = ktime_us_delta(end_time, start_time);
+ pll_input = ((start_count - end_count) & 0x3fffffff) / 10 *
+ (10000000 / usec_elapsed);
+
+ DBG("start[%ld] end[%ld]\n", start_count, end_count);
+
+ return pll_input;
+}
+
+#ifdef CONFIG_PPC_PMAC
+static void apple_kiwi_init(struct pci_dev *pdev)
+{
+ struct device_node *np = pci_device_to_OF_node(pdev);
+ u8 conf;
+
+ if (np == NULL || !of_device_is_compatible(np, "kiwi-root"))
+ return;
+
+ if (pdev->revision >= 0x03) {
+ /* Setup chip magic config stuff (from darwin) */
+ pci_read_config_byte (pdev, 0x40, &conf);
+ pci_write_config_byte(pdev, 0x40, (conf | 0x01));
+ }
+}
+#endif /* CONFIG_PPC_PMAC */
+
+static int init_chipset_pdcnew(struct pci_dev *dev)
+{
+ const char *name = DRV_NAME;
+ unsigned long dma_base = pci_resource_start(dev, 4);
+ unsigned long sec_dma_base = dma_base + 0x08;
+ long pll_input, pll_output, ratio;
+ int f, r;
+ u8 pll_ctl0, pll_ctl1;
+
+ if (dma_base == 0)
+ return -EFAULT;
+
+#ifdef CONFIG_PPC_PMAC
+ apple_kiwi_init(dev);
+#endif
+
+ /* Calculate the required PLL output frequency */
+ switch(max_dma_rate(dev)) {
+ case 4: /* it's 133 MHz for Ultra133 chips */
+ pll_output = 133333333;
+ break;
+ case 3: /* and 100 MHz for Ultra100 chips */
+ default:
+ pll_output = 100000000;
+ break;
+ }
+
+ /*
+ * Detect PLL input clock.
+ * On some systems, where PCI bus is running at non-standard clock rate
+ * (e.g. 25 or 40 MHz), we have to adjust the cycle time.
+ * PDC20268 and newer chips employ PLL circuit to help correct timing
+ * registers setting.
+ */
+ pll_input = detect_pll_input_clock(dma_base);
+ printk(KERN_INFO "%s %s: PLL input clock is %ld kHz\n",
+ name, pci_name(dev), pll_input / 1000);
+
+ /* Sanity check */
+ if (unlikely(pll_input < 5000000L || pll_input > 70000000L)) {
+ printk(KERN_ERR "%s %s: Bad PLL input clock %ld Hz, giving up!"
+ "\n", name, pci_name(dev), pll_input);
+ goto out;
+ }
+
+#ifdef DEBUG
+ DBG("pll_output is %ld Hz\n", pll_output);
+
+ /* Show the current clock value of PLL control register
+ * (maybe already configured by the BIOS)
+ */
+ outb(0x02, sec_dma_base + 0x01);
+ pll_ctl0 = inb(sec_dma_base + 0x03);
+ outb(0x03, sec_dma_base + 0x01);
+ pll_ctl1 = inb(sec_dma_base + 0x03);
+
+ DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
+#endif
+
+ /*
+ * Calculate the ratio of F, R and NO
+ * POUT = (F + 2) / (( R + 2) * NO)
+ */
+ ratio = pll_output / (pll_input / 1000);
+ if (ratio < 8600L) { /* 8.6x */
+ /* Using NO = 0x01, R = 0x0d */
+ r = 0x0d;
+ } else if (ratio < 12900L) { /* 12.9x */
+ /* Using NO = 0x01, R = 0x08 */
+ r = 0x08;
+ } else if (ratio < 16100L) { /* 16.1x */
+ /* Using NO = 0x01, R = 0x06 */
+ r = 0x06;
+ } else if (ratio < 64000L) { /* 64x */
+ r = 0x00;
+ } else {
+ /* Invalid ratio */
+ printk(KERN_ERR "%s %s: Bad ratio %ld, giving up!\n",
+ name, pci_name(dev), ratio);
+ goto out;
+ }
+
+ f = (ratio * (r + 2)) / 1000 - 2;
+
+ DBG("F[%d] R[%d] ratio*1000[%ld]\n", f, r, ratio);
+
+ if (unlikely(f < 0 || f > 127)) {
+ /* Invalid F */
+ printk(KERN_ERR "%s %s: F[%d] invalid!\n",
+ name, pci_name(dev), f);
+ goto out;
+ }
+
+ pll_ctl0 = (u8) f;
+ pll_ctl1 = (u8) r;
+
+ DBG("Writing pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
+
+ outb(0x02, sec_dma_base + 0x01);
+ outb(pll_ctl0, sec_dma_base + 0x03);
+ outb(0x03, sec_dma_base + 0x01);
+ outb(pll_ctl1, sec_dma_base + 0x03);
+
+ /* Wait the PLL circuit to be stable */
+ mdelay(30);
+
+#ifdef DEBUG
+ /*
+ * Show the current clock value of PLL control register
+ */
+ outb(0x02, sec_dma_base + 0x01);
+ pll_ctl0 = inb(sec_dma_base + 0x03);
+ outb(0x03, sec_dma_base + 0x01);
+ pll_ctl1 = inb(sec_dma_base + 0x03);
+
+ DBG("pll_ctl[%02X][%02X]\n", pll_ctl0, pll_ctl1);
+#endif
+
+ out:
+ return 0;
+}
+
+static struct pci_dev *pdc20270_get_dev2(struct pci_dev *dev)
+{
+ struct pci_dev *dev2;
+
+ dev2 = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn) + 1,
+ PCI_FUNC(dev->devfn)));
+
+ if (dev2 &&
+ dev2->vendor == dev->vendor &&
+ dev2->device == dev->device) {
+
+ if (dev2->irq != dev->irq) {
+ dev2->irq = dev->irq;
+ printk(KERN_INFO DRV_NAME " %s: PCI config space "
+ "interrupt fixed\n", pci_name(dev));
+ }
+
+ return dev2;
+ }
+
+ return NULL;
+}
+
+static const struct ide_port_ops pdcnew_port_ops = {
+ .set_pio_mode = pdcnew_set_pio_mode,
+ .set_dma_mode = pdcnew_set_dma_mode,
+ .resetproc = pdcnew_reset,
+ .cable_detect = pdcnew_cable_detect,
+};
+
+#define DECLARE_PDCNEW_DEV(udma) \
+ { \
+ .name = DRV_NAME, \
+ .init_chipset = init_chipset_pdcnew, \
+ .port_ops = &pdcnew_port_ops, \
+ .host_flags = IDE_HFLAG_POST_SET_MODE | \
+ IDE_HFLAG_ERROR_STOPS_FIFO | \
+ IDE_HFLAG_OFF_BOARD, \
+ .pio_mask = ATA_PIO4, \
+ .mwdma_mask = ATA_MWDMA2, \
+ .udma_mask = udma, \
+ }
+
+static const struct ide_port_info pdcnew_chipsets[] = {
+ /* 0: PDC202{68,70} */ DECLARE_PDCNEW_DEV(ATA_UDMA5),
+ /* 1: PDC202{69,71,75,76,77} */ DECLARE_PDCNEW_DEV(ATA_UDMA6),
+};
+
+/**
+ * pdc202new_init_one - called when a pdc202xx is found
+ * @dev: the pdc202new device
+ * @id: the matching pci id
+ *
+ * Called when the PCI registration layer (or the IDE initialization)
+ * finds a device matching our IDE device tables.
+ */
+
+static int pdc202new_init_one(struct pci_dev *dev, const struct pci_device_id *id)
+{
+ const struct ide_port_info *d = &pdcnew_chipsets[id->driver_data];
+ struct pci_dev *bridge = dev->bus->self;
+
+ if (dev->device == PCI_DEVICE_ID_PROMISE_20270 && bridge &&
+ bridge->vendor == PCI_VENDOR_ID_DEC &&
+ bridge->device == PCI_DEVICE_ID_DEC_21150) {
+ struct pci_dev *dev2;
+
+ if (PCI_SLOT(dev->devfn) & 2)
+ return -ENODEV;
+
+ dev2 = pdc20270_get_dev2(dev);
+
+ if (dev2) {
+ int ret = ide_pci_init_two(dev, dev2, d, NULL);
+ if (ret < 0)
+ pci_dev_put(dev2);
+ return ret;
+ }
+ }
+
+ if (dev->device == PCI_DEVICE_ID_PROMISE_20276 && bridge &&
+ bridge->vendor == PCI_VENDOR_ID_INTEL &&
+ (bridge->device == PCI_DEVICE_ID_INTEL_I960 ||
+ bridge->device == PCI_DEVICE_ID_INTEL_I960RM)) {
+ printk(KERN_INFO DRV_NAME " %s: attached to I2O RAID controller,"
+ " skipping\n", pci_name(dev));
+ return -ENODEV;
+ }
+
+ return ide_pci_init_one(dev, d, NULL);
+}
+
+static void pdc202new_remove(struct pci_dev *dev)
+{
+ struct ide_host *host = pci_get_drvdata(dev);
+ struct pci_dev *dev2 = host->dev[1] ? to_pci_dev(host->dev[1]) : NULL;
+
+ ide_pci_remove(dev);
+ pci_dev_put(dev2);
+}
+
+static const struct pci_device_id pdc202new_pci_tbl[] = {
+ { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20268), 0 },
+ { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20269), 1 },
+ { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20270), 0 },
+ { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20271), 1 },
+ { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20275), 1 },
+ { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20276), 1 },
+ { PCI_VDEVICE(PROMISE, PCI_DEVICE_ID_PROMISE_20277), 1 },
+ { 0, },
+};
+MODULE_DEVICE_TABLE(pci, pdc202new_pci_tbl);
+
+static struct pci_driver pdc202new_pci_driver = {
+ .name = "Promise_IDE",
+ .id_table = pdc202new_pci_tbl,
+ .probe = pdc202new_init_one,
+ .remove = pdc202new_remove,
+ .suspend = ide_pci_suspend,
+ .resume = ide_pci_resume,
+};
+
+static int __init pdc202new_ide_init(void)
+{
+ return ide_pci_register_driver(&pdc202new_pci_driver);
+}
+
+static void __exit pdc202new_ide_exit(void)
+{
+ pci_unregister_driver(&pdc202new_pci_driver);
+}
+
+module_init(pdc202new_ide_init);
+module_exit(pdc202new_ide_exit);
+
+MODULE_AUTHOR("Andre Hedrick, Frank Tiernan");
+MODULE_DESCRIPTION("PCI driver module for Promise PDC20268 and higher");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-24 17:42:53 +0000