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Diffstat (limited to 'drivers/ide/palm_bk3710.c')
-rw-r--r--drivers/ide/palm_bk3710.c387
1 files changed, 0 insertions, 387 deletions
diff --git a/drivers/ide/palm_bk3710.c b/drivers/ide/palm_bk3710.c
deleted file mode 100644
index d1fe4c13e35c..000000000000
--- a/drivers/ide/palm_bk3710.c
+++ /dev/null
@@ -1,387 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Palmchip bk3710 IDE controller
- *
- * Copyright (C) 2006 Texas Instruments.
- * Copyright (C) 2007 MontaVista Software, Inc., <source@mvista.com>
- *
- * ----------------------------------------------------------------------------
- *
- * ----------------------------------------------------------------------------
- */
-
-#include <linux/types.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/ide.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/clk.h>
-#include <linux/platform_device.h>
-
-/* Offset of the primary interface registers */
-#define IDE_PALM_ATA_PRI_REG_OFFSET 0x1F0
-
-/* Primary Control Offset */
-#define IDE_PALM_ATA_PRI_CTL_OFFSET 0x3F6
-
-#define BK3710_BMICP 0x00
-#define BK3710_BMISP 0x02
-#define BK3710_BMIDTP 0x04
-#define BK3710_IDETIMP 0x40
-#define BK3710_IDESTATUS 0x47
-#define BK3710_UDMACTL 0x48
-#define BK3710_MISCCTL 0x50
-#define BK3710_REGSTB 0x54
-#define BK3710_REGRCVR 0x58
-#define BK3710_DATSTB 0x5C
-#define BK3710_DATRCVR 0x60
-#define BK3710_DMASTB 0x64
-#define BK3710_DMARCVR 0x68
-#define BK3710_UDMASTB 0x6C
-#define BK3710_UDMATRP 0x70
-#define BK3710_UDMAENV 0x74
-#define BK3710_IORDYTMP 0x78
-
-static unsigned ideclk_period; /* in nanoseconds */
-
-struct palm_bk3710_udmatiming {
- unsigned int rptime; /* tRP -- Ready to pause time (nsec) */
- unsigned int cycletime; /* tCYCTYP2/2 -- avg Cycle Time (nsec) */
- /* tENV is always a minimum of 20 nsec */
-};
-
-static const struct palm_bk3710_udmatiming palm_bk3710_udmatimings[6] = {
- { 160, 240 / 2 }, /* UDMA Mode 0 */
- { 125, 160 / 2 }, /* UDMA Mode 1 */
- { 100, 120 / 2 }, /* UDMA Mode 2 */
- { 100, 90 / 2 }, /* UDMA Mode 3 */
- { 100, 60 / 2 }, /* UDMA Mode 4 */
- { 85, 40 / 2 }, /* UDMA Mode 5 */
-};
-
-static void palm_bk3710_setudmamode(void __iomem *base, unsigned int dev,
- unsigned int mode)
-{
- u8 tenv, trp, t0;
- u32 val32;
- u16 val16;
-
- /* DMA Data Setup */
- t0 = DIV_ROUND_UP(palm_bk3710_udmatimings[mode].cycletime,
- ideclk_period) - 1;
- tenv = DIV_ROUND_UP(20, ideclk_period) - 1;
- trp = DIV_ROUND_UP(palm_bk3710_udmatimings[mode].rptime,
- ideclk_period) - 1;
-
- /* udmastb Ultra DMA Access Strobe Width */
- val32 = readl(base + BK3710_UDMASTB) & (0xFF << (dev ? 0 : 8));
- val32 |= (t0 << (dev ? 8 : 0));
- writel(val32, base + BK3710_UDMASTB);
-
- /* udmatrp Ultra DMA Ready to Pause Time */
- val32 = readl(base + BK3710_UDMATRP) & (0xFF << (dev ? 0 : 8));
- val32 |= (trp << (dev ? 8 : 0));
- writel(val32, base + BK3710_UDMATRP);
-
- /* udmaenv Ultra DMA envelop Time */
- val32 = readl(base + BK3710_UDMAENV) & (0xFF << (dev ? 0 : 8));
- val32 |= (tenv << (dev ? 8 : 0));
- writel(val32, base + BK3710_UDMAENV);
-
- /* Enable UDMA for Device */
- val16 = readw(base + BK3710_UDMACTL) | (1 << dev);
- writew(val16, base + BK3710_UDMACTL);
-}
-
-static void palm_bk3710_setdmamode(void __iomem *base, unsigned int dev,
- unsigned short min_cycle,
- unsigned int mode)
-{
- u8 td, tkw, t0;
- u32 val32;
- u16 val16;
- struct ide_timing *t;
- int cycletime;
-
- t = ide_timing_find_mode(mode);
- cycletime = max_t(int, t->cycle, min_cycle);
-
- /* DMA Data Setup */
- t0 = DIV_ROUND_UP(cycletime, ideclk_period);
- td = DIV_ROUND_UP(t->active, ideclk_period);
- tkw = t0 - td - 1;
- td -= 1;
-
- val32 = readl(base + BK3710_DMASTB) & (0xFF << (dev ? 0 : 8));
- val32 |= (td << (dev ? 8 : 0));
- writel(val32, base + BK3710_DMASTB);
-
- val32 = readl(base + BK3710_DMARCVR) & (0xFF << (dev ? 0 : 8));
- val32 |= (tkw << (dev ? 8 : 0));
- writel(val32, base + BK3710_DMARCVR);
-
- /* Disable UDMA for Device */
- val16 = readw(base + BK3710_UDMACTL) & ~(1 << dev);
- writew(val16, base + BK3710_UDMACTL);
-}
-
-static void palm_bk3710_setpiomode(void __iomem *base, ide_drive_t *mate,
- unsigned int dev, unsigned int cycletime,
- unsigned int mode)
-{
- u8 t2, t2i, t0;
- u32 val32;
- struct ide_timing *t;
-
- t = ide_timing_find_mode(XFER_PIO_0 + mode);
-
- /* PIO Data Setup */
- t0 = DIV_ROUND_UP(cycletime, ideclk_period);
- t2 = DIV_ROUND_UP(t->active, ideclk_period);
-
- t2i = t0 - t2 - 1;
- t2 -= 1;
-
- val32 = readl(base + BK3710_DATSTB) & (0xFF << (dev ? 0 : 8));
- val32 |= (t2 << (dev ? 8 : 0));
- writel(val32, base + BK3710_DATSTB);
-
- val32 = readl(base + BK3710_DATRCVR) & (0xFF << (dev ? 0 : 8));
- val32 |= (t2i << (dev ? 8 : 0));
- writel(val32, base + BK3710_DATRCVR);
-
- if (mate) {
- u8 mode2 = mate->pio_mode - XFER_PIO_0;
-
- if (mode2 < mode)
- mode = mode2;
- }
-
- /* TASKFILE Setup */
- t0 = DIV_ROUND_UP(t->cyc8b, ideclk_period);
- t2 = DIV_ROUND_UP(t->act8b, ideclk_period);
-
- t2i = t0 - t2 - 1;
- t2 -= 1;
-
- val32 = readl(base + BK3710_REGSTB) & (0xFF << (dev ? 0 : 8));
- val32 |= (t2 << (dev ? 8 : 0));
- writel(val32, base + BK3710_REGSTB);
-
- val32 = readl(base + BK3710_REGRCVR) & (0xFF << (dev ? 0 : 8));
- val32 |= (t2i << (dev ? 8 : 0));
- writel(val32, base + BK3710_REGRCVR);
-}
-
-static void palm_bk3710_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- int is_slave = drive->dn & 1;
- void __iomem *base = (void __iomem *)hwif->dma_base;
- const u8 xferspeed = drive->dma_mode;
-
- if (xferspeed >= XFER_UDMA_0) {
- palm_bk3710_setudmamode(base, is_slave,
- xferspeed - XFER_UDMA_0);
- } else {
- palm_bk3710_setdmamode(base, is_slave,
- drive->id[ATA_ID_EIDE_DMA_MIN],
- xferspeed);
- }
-}
-
-static void palm_bk3710_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- unsigned int cycle_time;
- int is_slave = drive->dn & 1;
- ide_drive_t *mate;
- void __iomem *base = (void __iomem *)hwif->dma_base;
- const u8 pio = drive->pio_mode - XFER_PIO_0;
-
- /*
- * Obtain the drive PIO data for tuning the Palm Chip registers
- */
- cycle_time = ide_pio_cycle_time(drive, pio);
- mate = ide_get_pair_dev(drive);
- palm_bk3710_setpiomode(base, mate, is_slave, cycle_time, pio);
-}
-
-static void palm_bk3710_chipinit(void __iomem *base)
-{
- /*
- * REVISIT: the ATA reset signal needs to be managed through a
- * GPIO, which means it should come from platform_data. Until
- * we get and use such information, we have to trust that things
- * have been reset before we get here.
- */
-
- /*
- * Program the IDETIMP Register Value based on the following assumptions
- *
- * (ATA_IDETIMP_IDEEN , ENABLE ) |
- * (ATA_IDETIMP_PREPOST1 , DISABLE) |
- * (ATA_IDETIMP_PREPOST0 , DISABLE) |
- *
- * DM6446 silicon rev 2.1 and earlier have no observed net benefit
- * from enabling prefetch/postwrite.
- */
- writew(BIT(15), base + BK3710_IDETIMP);
-
- /*
- * UDMACTL Ultra-ATA DMA Control
- * (ATA_UDMACTL_UDMAP1 , 0 ) |
- * (ATA_UDMACTL_UDMAP0 , 0 )
- *
- */
- writew(0, base + BK3710_UDMACTL);
-
- /*
- * MISCCTL Miscellaneous Conrol Register
- * (ATA_MISCCTL_HWNHLD1P , 1 cycle)
- * (ATA_MISCCTL_HWNHLD0P , 1 cycle)
- * (ATA_MISCCTL_TIMORIDE , 1)
- */
- writel(0x001, base + BK3710_MISCCTL);
-
- /*
- * IORDYTMP IORDY Timer for Primary Register
- * (ATA_IORDYTMP_IORDYTMP , 0xffff )
- */
- writel(0xFFFF, base + BK3710_IORDYTMP);
-
- /*
- * Configure BMISP Register
- * (ATA_BMISP_DMAEN1 , DISABLE ) |
- * (ATA_BMISP_DMAEN0 , DISABLE ) |
- * (ATA_BMISP_IORDYINT , CLEAR) |
- * (ATA_BMISP_INTRSTAT , CLEAR) |
- * (ATA_BMISP_DMAERROR , CLEAR)
- */
- writew(0, base + BK3710_BMISP);
-
- palm_bk3710_setpiomode(base, NULL, 0, 600, 0);
- palm_bk3710_setpiomode(base, NULL, 1, 600, 0);
-}
-
-static u8 palm_bk3710_cable_detect(ide_hwif_t *hwif)
-{
- return ATA_CBL_PATA80;
-}
-
-static int palm_bk3710_init_dma(ide_hwif_t *hwif, const struct ide_port_info *d)
-{
- printk(KERN_INFO " %s: MMIO-DMA\n", hwif->name);
-
- if (ide_allocate_dma_engine(hwif))
- return -1;
-
- hwif->dma_base = hwif->io_ports.data_addr - IDE_PALM_ATA_PRI_REG_OFFSET;
-
- return 0;
-}
-
-static const struct ide_port_ops palm_bk3710_ports_ops = {
- .set_pio_mode = palm_bk3710_set_pio_mode,
- .set_dma_mode = palm_bk3710_set_dma_mode,
- .cable_detect = palm_bk3710_cable_detect,
-};
-
-static struct ide_port_info palm_bk3710_port_info __initdata = {
- .init_dma = palm_bk3710_init_dma,
- .port_ops = &palm_bk3710_ports_ops,
- .dma_ops = &sff_dma_ops,
- .host_flags = IDE_HFLAG_MMIO,
- .pio_mask = ATA_PIO4,
- .mwdma_mask = ATA_MWDMA2,
- .chipset = ide_palm3710,
-};
-
-static int __init palm_bk3710_probe(struct platform_device *pdev)
-{
- struct clk *clk;
- struct resource *mem, *irq;
- void __iomem *base;
- unsigned long rate, mem_size;
- int i, rc;
- struct ide_hw hw, *hws[] = { &hw };
-
- clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(clk))
- return -ENODEV;
-
- clk_enable(clk);
- rate = clk_get_rate(clk);
- if (!rate)
- return -EINVAL;
-
- /* NOTE: round *down* to meet minimum timings; we count in clocks */
- ideclk_period = 1000000000UL / rate;
-
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (mem == NULL) {
- printk(KERN_ERR "failed to get memory region resource\n");
- return -ENODEV;
- }
-
- irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
- if (irq == NULL) {
- printk(KERN_ERR "failed to get IRQ resource\n");
- return -ENODEV;
- }
-
- mem_size = resource_size(mem);
- if (request_mem_region(mem->start, mem_size, "palm_bk3710") == NULL) {
- printk(KERN_ERR "failed to request memory region\n");
- return -EBUSY;
- }
-
- base = ioremap(mem->start, mem_size);
- if (!base) {
- printk(KERN_ERR "failed to map IO memory\n");
- release_mem_region(mem->start, mem_size);
- return -ENOMEM;
- }
-
- /* Configure the Palm Chip controller */
- palm_bk3710_chipinit(base);
-
- memset(&hw, 0, sizeof(hw));
- for (i = 0; i < IDE_NR_PORTS - 2; i++)
- hw.io_ports_array[i] = (unsigned long)
- (base + IDE_PALM_ATA_PRI_REG_OFFSET + i);
- hw.io_ports.ctl_addr = (unsigned long)
- (base + IDE_PALM_ATA_PRI_CTL_OFFSET);
- hw.irq = irq->start;
- hw.dev = &pdev->dev;
-
- palm_bk3710_port_info.udma_mask = rate < 100000000 ? ATA_UDMA4 :
- ATA_UDMA5;
-
- /* Register the IDE interface with Linux */
- rc = ide_host_add(&palm_bk3710_port_info, hws, 1, NULL);
- if (rc)
- goto out;
-
- return 0;
-out:
- printk(KERN_WARNING "Palm Chip BK3710 IDE Register Fail\n");
- return rc;
-}
-
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:palm_bk3710");
-
-static struct platform_driver platform_bk_driver = {
- .driver = {
- .name = "palm_bk3710",
- },
-};
-
-static int __init palm_bk3710_init(void)
-{
- return platform_driver_probe(&platform_bk_driver, palm_bk3710_probe);
-}
-
-module_init(palm_bk3710_init);
-MODULE_LICENSE("GPL");