[PATCH 09/10] ide: tx4938ide: Remove driver

Thomas Bogendoerfer
2021-01-05T14:05:43Z

CPU support for TX49xx is getting removed, so remove IDE support for it.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---
drivers/ide/Kconfig | 10 -
drivers/ide/Makefile | 3 -
drivers/ide/tx4938ide.c | 209 -------------
drivers/ide/tx4939ide.c | 628 ----------------------------------------
4 files changed, 850 deletions(-)
delete mode 100644 drivers/ide/tx4938ide.c
delete mode 100644 drivers/ide/tx4939ide.c

diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig
index 19abf11c84c8..03303af8c96f 100644
--- a/drivers/ide/Kconfig
+++ b/drivers/ide/Kconfig
@@ -662,16 +662,6 @@ config BLK_DEV_IDE_PMAC_ATA100FIRST
CD-ROM on hda. This option changes this to more natural hda for
hard disk and hdc for CD-ROM.

-config BLK_DEV_IDE_TX4938
- tristate "TX4938 internal IDE support"
- depends on SOC_TX4938
- select IDE_TIMINGS
-
-config BLK_DEV_IDE_TX4939
- tristate "TX4939 internal IDE support"
- depends on SOC_TX4939
- select BLK_DEV_IDEDMA_SFF
-
config BLK_DEV_IDE_ICSIDE
tristate "ICS IDE interface support"
depends on ARM && ARCH_ACORN
diff --git a/drivers/ide/Makefile b/drivers/ide/Makefile
index 2605b3cdaf47..4d6655160a4a 100644
--- a/drivers/ide/Makefile
+++ b/drivers/ide/Makefile
@@ -106,6 +106,3 @@ obj-$(CONFIG_BLK_DEV_PLATFORM) += ide_platform.o
obj-$(CONFIG_BLK_DEV_IDE_ICSIDE) += icside.o
obj-$(CONFIG_BLK_DEV_IDE_RAPIDE) += rapide.o
obj-$(CONFIG_BLK_DEV_PALMCHIP_BK3710) += palm_bk3710.o
-
-obj-$(CONFIG_BLK_DEV_IDE_TX4938) += tx4938ide.o
-obj-$(CONFIG_BLK_DEV_IDE_TX4939) += tx4939ide.o
diff --git a/drivers/ide/tx4938ide.c b/drivers/ide/tx4938ide.c
deleted file mode 100644
index 962eb92501b5..000000000000
--- a/drivers/ide/tx4938ide.c
+++ /dev/null
@@ -1,209 +0,0 @@
-/*
- * TX4938 internal IDE driver
- * Based on tx4939ide.c.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * (C) Copyright TOSHIBA CORPORATION 2005-2007
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/ide.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-
-#include <asm/ide.h>
-#include <asm/txx9/tx4938.h>
-
-static void tx4938ide_tune_ebusc(unsigned int ebus_ch,
- unsigned int gbus_clock,
- u8 pio)
-{
- struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
- u64 cr = __raw_readq(&tx4938_ebuscptr->cr[ebus_ch]);
- unsigned int sp = (cr >> 4) & 3;
- unsigned int clock = gbus_clock / (4 - sp);
- unsigned int cycle = 1000000000 / clock;
- unsigned int shwt;
- int wt;
-
- /* Minimum DIOx- active time */
- wt = DIV_ROUND_UP(t->act8b, cycle) - 2;
- /* IORDY setup time: 35ns */
- wt = max_t(int, wt, DIV_ROUND_UP(35, cycle));
- /* actual wait-cycle is max(wt & ~1, 1) */
- if (wt > 2 && (wt & 1))
- wt++;
- wt &= ~1;
- /* Address-valid to DIOR/DIOW setup */
- shwt = DIV_ROUND_UP(t->setup, cycle);
-
- /* -DIOx recovery time (SHWT * 4) and cycle time requirement */
- while ((shwt * 4 + wt + (wt ? 2 : 3)) * cycle < t->cycle)
- shwt++;
- if (shwt > 7) {
- pr_warn("tx4938ide: SHWT violation (%d)\n", shwt);
- shwt = 7;
- }
- pr_debug("tx4938ide: ebus %d, bus cycle %dns, WT %d, SHWT %d\n",
- ebus_ch, cycle, wt, shwt);
-
- __raw_writeq((cr & ~0x3f007ull) | (wt << 12) | shwt,
- &tx4938_ebuscptr->cr[ebus_ch]);
-}
-
-static void tx4938ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- struct tx4938ide_platform_info *pdata = dev_get_platdata(hwif->dev);
- u8 safe = drive->pio_mode - XFER_PIO_0;
- ide_drive_t *pair;
-
- pair = ide_get_pair_dev(drive);
- if (pair)
- safe = min_t(u8, safe, pair->pio_mode - XFER_PIO_0);
- tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, safe);
-}
-
-#ifdef __BIG_ENDIAN
-
-/* custom iops (independent from SWAP_IO_SPACE) */
-static void tx4938ide_input_data_swap(ide_drive_t *drive, struct ide_cmd *cmd,
- void *buf, unsigned int len)
-{
- unsigned long port = drive->hwif->io_ports.data_addr;
- unsigned short *ptr = buf;
- unsigned int count = (len + 1) / 2;
-
- while (count--)
- *ptr++ = cpu_to_le16(__raw_readw((void __iomem *)port));
- __ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
-}
-
-static void tx4938ide_output_data_swap(ide_drive_t *drive, struct ide_cmd *cmd,
- void *buf, unsigned int len)
-{
- unsigned long port = drive->hwif->io_ports.data_addr;
- unsigned short *ptr = buf;
- unsigned int count = (len + 1) / 2;
-
- while (count--) {
- __raw_writew(le16_to_cpu(*ptr), (void __iomem *)port);
- ptr++;
- }
- __ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
-}
-
-static const struct ide_tp_ops tx4938ide_tp_ops = {
- .exec_command = ide_exec_command,
- .read_status = ide_read_status,
- .read_altstatus = ide_read_altstatus,
- .write_devctl = ide_write_devctl,
-
- .dev_select = ide_dev_select,
- .tf_load = ide_tf_load,
- .tf_read = ide_tf_read,
-
- .input_data = tx4938ide_input_data_swap,
- .output_data = tx4938ide_output_data_swap,
-};
-
-#endif /* __BIG_ENDIAN */
-
-static const struct ide_port_ops tx4938ide_port_ops = {
- .set_pio_mode = tx4938ide_set_pio_mode,
-};
-
-static const struct ide_port_info tx4938ide_port_info __initconst = {
- .port_ops = &tx4938ide_port_ops,
-#ifdef __BIG_ENDIAN
- .tp_ops = &tx4938ide_tp_ops,
-#endif
- .host_flags = IDE_HFLAG_MMIO | IDE_HFLAG_NO_DMA,
- .pio_mask = ATA_PIO5,
- .chipset = ide_generic,
-};
-
-static int __init tx4938ide_probe(struct platform_device *pdev)
-{
- struct ide_hw hw, *hws[] = { &hw };
- struct ide_host *host;
- struct resource *res;
- struct tx4938ide_platform_info *pdata = dev_get_platdata(&pdev->dev);
- int irq, ret, i;
- unsigned long mapbase, mapctl;
- struct ide_port_info d = tx4938ide_port_info;
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return -ENODEV;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- if (!devm_request_mem_region(&pdev->dev, res->start,
- resource_size(res), "tx4938ide"))
- return -EBUSY;
- mapbase = (unsigned long)devm_ioremap(&pdev->dev, res->start,
- 8 << pdata->ioport_shift);
- mapctl = (unsigned long)devm_ioremap(&pdev->dev,
- res->start + 0x10000 +
- (6 << pdata->ioport_shift),
- 1 << pdata->ioport_shift);
- if (!mapbase || !mapctl)
- return -EBUSY;
-
- memset(&hw, 0, sizeof(hw));
- if (pdata->ioport_shift) {
- unsigned long port = mapbase;
- unsigned long ctl = mapctl;
-
- hw.io_ports_array[0] = port;
-#ifdef __BIG_ENDIAN
- port++;
- ctl++;
-#endif
- for (i = 1; i <= 7; i++)
- hw.io_ports_array[i] =
- port + (i << pdata->ioport_shift);
- hw.io_ports.ctl_addr = ctl;
- } else
- ide_std_init_ports(&hw, mapbase, mapctl);
- hw.irq = irq;
- hw.dev = &pdev->dev;
-
- pr_info("TX4938 IDE interface (base %#lx, ctl %#lx, irq %d)\n",
- mapbase, mapctl, hw.irq);
- if (pdata->gbus_clock)
- tx4938ide_tune_ebusc(pdata->ebus_ch, pdata->gbus_clock, 0);
- else
- d.port_ops = NULL;
- ret = ide_host_add(&d, hws, 1, &host);
- if (!ret)
- platform_set_drvdata(pdev, host);
- return ret;
-}
-
-static int __exit tx4938ide_remove(struct platform_device *pdev)
-{
- struct ide_host *host = platform_get_drvdata(pdev);
-
- ide_host_remove(host);
- return 0;
-}
-
-static struct platform_driver tx4938ide_driver = {
- .driver = {
- .name = "tx4938ide",
- },
- .remove = __exit_p(tx4938ide_remove),
-};
-
-module_platform_driver_probe(tx4938ide_driver, tx4938ide_probe);
-
-MODULE_DESCRIPTION("TX4938 internal IDE driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:tx4938ide");
diff --git a/drivers/ide/tx4939ide.c b/drivers/ide/tx4939ide.c
deleted file mode 100644
index b1bbf807bb3d..000000000000
--- a/drivers/ide/tx4939ide.c
+++ /dev/null
@@ -1,628 +0,0 @@
-/*
- * TX4939 internal IDE driver
- * Based on RBTX49xx patch from CELF patch archive.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * (C) Copyright TOSHIBA CORPORATION 2005-2007
- */
-
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/ide.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-#include <linux/scatterlist.h>
-
-#include <asm/ide.h>
-
-#define MODNAME "tx4939ide"
-
-/* ATA Shadow Registers (8-bit except for Data which is 16-bit) */
-#define TX4939IDE_Data 0x000
-#define TX4939IDE_Error_Feature 0x001
-#define TX4939IDE_Sec 0x002
-#define TX4939IDE_LBA0 0x003
-#define TX4939IDE_LBA1 0x004
-#define TX4939IDE_LBA2 0x005
-#define TX4939IDE_DevHead 0x006
-#define TX4939IDE_Stat_Cmd 0x007
-#define TX4939IDE_AltStat_DevCtl 0x402
-/* H/W DMA Registers */
-#define TX4939IDE_DMA_Cmd 0x800 /* 8-bit */
-#define TX4939IDE_DMA_Stat 0x802 /* 8-bit */
-#define TX4939IDE_PRD_Ptr 0x804 /* 32-bit */
-/* ATA100 CORE Registers (16-bit) */
-#define TX4939IDE_Sys_Ctl 0xc00
-#define TX4939IDE_Xfer_Cnt_1 0xc08
-#define TX4939IDE_Xfer_Cnt_2 0xc0a
-#define TX4939IDE_Sec_Cnt 0xc10
-#define TX4939IDE_Start_Lo_Addr 0xc18
-#define TX4939IDE_Start_Up_Addr 0xc20
-#define TX4939IDE_Add_Ctl 0xc28
-#define TX4939IDE_Lo_Burst_Cnt 0xc30
-#define TX4939IDE_Up_Burst_Cnt 0xc38
-#define TX4939IDE_PIO_Addr 0xc88
-#define TX4939IDE_H_Rst_Tim 0xc90
-#define TX4939IDE_Int_Ctl 0xc98
-#define TX4939IDE_Pkt_Cmd 0xcb8
-#define TX4939IDE_Bxfer_Cnt_Hi 0xcc0
-#define TX4939IDE_Bxfer_Cnt_Lo 0xcc8
-#define TX4939IDE_Dev_TErr 0xcd0
-#define TX4939IDE_Pkt_Xfer_Ctl 0xcd8
-#define TX4939IDE_Start_TAddr 0xce0
-
-/* bits for Int_Ctl */
-#define TX4939IDE_INT_ADDRERR 0x80
-#define TX4939IDE_INT_REACHMUL 0x40
-#define TX4939IDE_INT_DEVTIMING 0x20
-#define TX4939IDE_INT_UDMATERM 0x10
-#define TX4939IDE_INT_TIMER 0x08
-#define TX4939IDE_INT_BUSERR 0x04
-#define TX4939IDE_INT_XFEREND 0x02
-#define TX4939IDE_INT_HOST 0x01
-
-#define TX4939IDE_IGNORE_INTS \
- (TX4939IDE_INT_ADDRERR | TX4939IDE_INT_REACHMUL | \
- TX4939IDE_INT_DEVTIMING | TX4939IDE_INT_UDMATERM | \
- TX4939IDE_INT_TIMER | TX4939IDE_INT_XFEREND)
-
-#ifdef __BIG_ENDIAN
-#define tx4939ide_swizzlel(a) ((a) ^ 4)
-#define tx4939ide_swizzlew(a) ((a) ^ 6)
-#define tx4939ide_swizzleb(a) ((a) ^ 7)
-#else
-#define tx4939ide_swizzlel(a) (a)
-#define tx4939ide_swizzlew(a) (a)
-#define tx4939ide_swizzleb(a) (a)
-#endif
-
-static u16 tx4939ide_readw(void __iomem *base, u32 reg)
-{
- return __raw_readw(base + tx4939ide_swizzlew(reg));
-}
-static u8 tx4939ide_readb(void __iomem *base, u32 reg)
-{
- return __raw_readb(base + tx4939ide_swizzleb(reg));
-}
-static void tx4939ide_writel(u32 val, void __iomem *base, u32 reg)
-{
- __raw_writel(val, base + tx4939ide_swizzlel(reg));
-}
-static void tx4939ide_writew(u16 val, void __iomem *base, u32 reg)
-{
- __raw_writew(val, base + tx4939ide_swizzlew(reg));
-}
-static void tx4939ide_writeb(u8 val, void __iomem *base, u32 reg)
-{
- __raw_writeb(val, base + tx4939ide_swizzleb(reg));
-}
-
-#define TX4939IDE_BASE(hwif) ((void __iomem *)(hwif)->extra_base)
-
-static void tx4939ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- int is_slave = drive->dn;
- u32 mask, val;
- const u8 pio = drive->pio_mode - XFER_PIO_0;
- u8 safe = pio;
- ide_drive_t *pair;
-
- pair = ide_get_pair_dev(drive);
- if (pair)
- safe = min_t(u8, safe, pair->pio_mode - XFER_PIO_0);
- /*
- * Update Command Transfer Mode for master/slave and Data
- * Transfer Mode for this drive.
- */
- mask = is_slave ? 0x07f00000 : 0x000007f0;
- val = ((safe << 8) | (pio << 4)) << (is_slave ? 16 : 0);
- hwif->select_data = (hwif->select_data & ~mask) | val;
- /* tx4939ide_tf_load_fixup() will set the Sys_Ctl register */
-}
-
-static void tx4939ide_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
-{
- u32 mask, val;
- const u8 mode = drive->dma_mode;
-
- /* Update Data Transfer Mode for this drive. */
- if (mode >= XFER_UDMA_0)
- val = mode - XFER_UDMA_0 + 8;
- else
- val = mode - XFER_MW_DMA_0 + 5;
- if (drive->dn) {
- mask = 0x00f00000;
- val <<= 20;
- } else {
- mask = 0x000000f0;
- val <<= 4;
- }
- hwif->select_data = (hwif->select_data & ~mask) | val;
- /* tx4939ide_tf_load_fixup() will set the Sys_Ctl register */
-}
-
-static u16 tx4939ide_check_error_ints(ide_hwif_t *hwif)
-{
- void __iomem *base = TX4939IDE_BASE(hwif);
- u16 ctl = tx4939ide_readw(base, TX4939IDE_Int_Ctl);
-
- if (ctl & TX4939IDE_INT_BUSERR) {
- /* reset FIFO */
- u16 sysctl = tx4939ide_readw(base, TX4939IDE_Sys_Ctl);
-
- tx4939ide_writew(sysctl | 0x4000, base, TX4939IDE_Sys_Ctl);
- /* wait 12GBUSCLK (typ. 60ns @ GBUS200MHz, max 270ns) */
- ndelay(270);
- tx4939ide_writew(sysctl, base, TX4939IDE_Sys_Ctl);
- }
- if (ctl & (TX4939IDE_INT_ADDRERR |
- TX4939IDE_INT_DEVTIMING | TX4939IDE_INT_BUSERR))
- pr_err("%s: Error interrupt %#x (%s%s%s )\n",
- hwif->name, ctl,
- ctl & TX4939IDE_INT_ADDRERR ? " Address-Error" : "",
- ctl & TX4939IDE_INT_DEVTIMING ? " DEV-Timing" : "",
- ctl & TX4939IDE_INT_BUSERR ? " Bus-Error" : "");
- return ctl;
-}
-
-static void tx4939ide_clear_irq(ide_drive_t *drive)
-{
- ide_hwif_t *hwif;
- void __iomem *base;
- u16 ctl;
-
- /*
- * tx4939ide_dma_test_irq() and tx4939ide_dma_end() do all job
- * for DMA case.
- */
- if (drive->waiting_for_dma)
- return;
- hwif = drive->hwif;
- base = TX4939IDE_BASE(hwif);
- ctl = tx4939ide_check_error_ints(hwif);
- tx4939ide_writew(ctl, base, TX4939IDE_Int_Ctl);
-}
-
-static u8 tx4939ide_cable_detect(ide_hwif_t *hwif)
-{
- void __iomem *base = TX4939IDE_BASE(hwif);
-
- return tx4939ide_readw(base, TX4939IDE_Sys_Ctl) & 0x2000 ?
- ATA_CBL_PATA40 : ATA_CBL_PATA80;
-}
-
-#ifdef __BIG_ENDIAN
-static void tx4939ide_dma_host_set(ide_drive_t *drive, int on)
-{
- ide_hwif_t *hwif = drive->hwif;
- u8 unit = drive->dn;
- void __iomem *base = TX4939IDE_BASE(hwif);
- u8 dma_stat = tx4939ide_readb(base, TX4939IDE_DMA_Stat);
-
- if (on)
- dma_stat |= (1 << (5 + unit));
- else
- dma_stat &= ~(1 << (5 + unit));
-
- tx4939ide_writeb(dma_stat, base, TX4939IDE_DMA_Stat);
-}
-#else
-#define tx4939ide_dma_host_set ide_dma_host_set
-#endif
-
-static u8 tx4939ide_clear_dma_status(void __iomem *base)
-{
- u8 dma_stat;
-
- /* read DMA status for INTR & ERROR flags */
- dma_stat = tx4939ide_readb(base, TX4939IDE_DMA_Stat);
- /* clear INTR & ERROR flags */
- tx4939ide_writeb(dma_stat | ATA_DMA_INTR | ATA_DMA_ERR, base,
- TX4939IDE_DMA_Stat);
- /* recover intmask cleared by writing to bit2 of DMA_Stat */
- tx4939ide_writew(TX4939IDE_IGNORE_INTS << 8, base, TX4939IDE_Int_Ctl);
- return dma_stat;
-}
-
-#ifdef __BIG_ENDIAN
-/* custom ide_build_dmatable to handle swapped layout */
-static int tx4939ide_build_dmatable(ide_drive_t *drive, struct ide_cmd *cmd)
-{
- ide_hwif_t *hwif = drive->hwif;
- u32 *table = (u32 *)hwif->dmatable_cpu;
- unsigned int count = 0;
- int i;
- struct scatterlist *sg;
-
- for_each_sg(hwif->sg_table, sg, cmd->sg_nents, i) {
- u32 cur_addr, cur_len, bcount;
-
- cur_addr = sg_dma_address(sg);
- cur_len = sg_dma_len(sg);
-
- /*
- * Fill in the DMA table, without crossing any 64kB boundaries.
- */
-
- while (cur_len) {
- if (count++ >= PRD_ENTRIES)
- goto use_pio_instead;
-
- bcount = 0x10000 - (cur_addr & 0xffff);
- if (bcount > cur_len)
- bcount = cur_len;
- /*
- * This workaround for zero count seems required.
- * (standard ide_build_dmatable does it too)
- */
- if (bcount == 0x10000)
- bcount = 0x8000;
- *table++ = bcount & 0xffff;
- *table++ = cur_addr;
- cur_addr += bcount;
- cur_len -= bcount;
- }
- }
-
- if (count) {
- *(table - 2) |= 0x80000000;
- return count;
- }
-
-use_pio_instead:
- printk(KERN_ERR "%s: %s\n", drive->name,
- count ? "DMA table too small" : "empty DMA table?");
-
- return 0; /* revert to PIO for this request */
-}
-#else
-#define tx4939ide_build_dmatable ide_build_dmatable
-#endif
-
-static int tx4939ide_dma_setup(ide_drive_t *drive, struct ide_cmd *cmd)
-{
- ide_hwif_t *hwif = drive->hwif;
- void __iomem *base = TX4939IDE_BASE(hwif);
- u8 rw = (cmd->tf_flags & IDE_TFLAG_WRITE) ? 0 : ATA_DMA_WR;
-
- /* fall back to PIO! */
- if (tx4939ide_build_dmatable(drive, cmd) == 0)
- return 1;
-
- /* PRD table */
- tx4939ide_writel(hwif->dmatable_dma, base, TX4939IDE_PRD_Ptr);
-
- /* specify r/w */
- tx4939ide_writeb(rw, base, TX4939IDE_DMA_Cmd);
-
- /* clear INTR & ERROR flags */
- tx4939ide_clear_dma_status(base);
-
- tx4939ide_writew(SECTOR_SIZE / 2, base, drive->dn ?
- TX4939IDE_Xfer_Cnt_2 : TX4939IDE_Xfer_Cnt_1);
-
- tx4939ide_writew(blk_rq_sectors(cmd->rq), base, TX4939IDE_Sec_Cnt);
-
- return 0;
-}
-
-static int tx4939ide_dma_end(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = drive->hwif;
- u8 dma_stat, dma_cmd;
- void __iomem *base = TX4939IDE_BASE(hwif);
- u16 ctl = tx4939ide_readw(base, TX4939IDE_Int_Ctl);
-
- /* get DMA command mode */
- dma_cmd = tx4939ide_readb(base, TX4939IDE_DMA_Cmd);
- /* stop DMA */
- tx4939ide_writeb(dma_cmd & ~ATA_DMA_START, base, TX4939IDE_DMA_Cmd);
-
- /* read and clear the INTR & ERROR bits */
- dma_stat = tx4939ide_clear_dma_status(base);
-
-#define CHECK_DMA_MASK (ATA_DMA_ACTIVE | ATA_DMA_ERR | ATA_DMA_INTR)
-
- /* verify good DMA status */
- if ((dma_stat & CHECK_DMA_MASK) == 0 &&
- (ctl & (TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST)) ==
- (TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST))
- /* INT_IDE lost... bug? */
- return 0;
- return ((dma_stat & CHECK_DMA_MASK) !=
- ATA_DMA_INTR) ? 0x10 | dma_stat : 0;
-}
-
-/* returns 1 if DMA IRQ issued, 0 otherwise */
-static int tx4939ide_dma_test_irq(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = drive->hwif;
- void __iomem *base = TX4939IDE_BASE(hwif);
- u16 ctl, ide_int;
- u8 dma_stat, stat;
- int found = 0;
-
- ctl = tx4939ide_check_error_ints(hwif);
- ide_int = ctl & (TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST);
- switch (ide_int) {
- case TX4939IDE_INT_HOST:
- /* On error, XFEREND might not be asserted. */
- stat = tx4939ide_readb(base, TX4939IDE_AltStat_DevCtl);
- if ((stat & (ATA_BUSY | ATA_DRQ | ATA_ERR)) == ATA_ERR)
- found = 1;
- else
- /* Wait for XFEREND (Mask HOST and unmask XFEREND) */
- ctl &= ~TX4939IDE_INT_XFEREND << 8;
- ctl |= ide_int << 8;
- break;
- case TX4939IDE_INT_HOST | TX4939IDE_INT_XFEREND:
- dma_stat = tx4939ide_readb(base, TX4939IDE_DMA_Stat);
- if (!(dma_stat & ATA_DMA_INTR))
- pr_warn("%s: weird interrupt status. "
- "DMA_Stat %#02x int_ctl %#04x\n",
- hwif->name, dma_stat, ctl);
- found = 1;
- break;
- }
- /*
- * Do not clear XFEREND, HOST now. They will be cleared by
- * clearing bit2 of DMA_Stat.
- */
- ctl &= ~ide_int;
- tx4939ide_writew(ctl, base, TX4939IDE_Int_Ctl);
- return found;
-}
-
-#ifdef __BIG_ENDIAN
-static u8 tx4939ide_dma_sff_read_status(ide_hwif_t *hwif)
-{
- void __iomem *base = TX4939IDE_BASE(hwif);
-
- return tx4939ide_readb(base, TX4939IDE_DMA_Stat);
-}
-#else
-#define tx4939ide_dma_sff_read_status ide_dma_sff_read_status
-#endif
-
-static void tx4939ide_init_hwif(ide_hwif_t *hwif)
-{
- void __iomem *base = TX4939IDE_BASE(hwif);
-
- /* Soft Reset */
- tx4939ide_writew(0x8000, base, TX4939IDE_Sys_Ctl);
- /* at least 20 GBUSCLK (typ. 100ns @ GBUS200MHz, max 450ns) */
- ndelay(450);
- tx4939ide_writew(0x0000, base, TX4939IDE_Sys_Ctl);
- /* mask some interrupts and clear all interrupts */
- tx4939ide_writew((TX4939IDE_IGNORE_INTS << 8) | 0xff, base,
- TX4939IDE_Int_Ctl);
-
- tx4939ide_writew(0x0008, base, TX4939IDE_Lo_Burst_Cnt);
- tx4939ide_writew(0, base, TX4939IDE_Up_Burst_Cnt);
-}
-
-static int tx4939ide_init_dma(ide_hwif_t *hwif, const struct ide_port_info *d)
-{
- hwif->dma_base =
- hwif->extra_base + tx4939ide_swizzleb(TX4939IDE_DMA_Cmd);
- /*
- * Note that we cannot use ATA_DMA_TABLE_OFS, ATA_DMA_STATUS
- * for big endian.
- */
- return ide_allocate_dma_engine(hwif);
-}
-
-static void tx4939ide_tf_load_fixup(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = drive->hwif;
- void __iomem *base = TX4939IDE_BASE(hwif);
- u16 sysctl = hwif->select_data >> (drive->dn ? 16 : 0);
-
- /*
- * Fix ATA100 CORE System Control Register. (The write to the
- * Device/Head register may write wrong data to the System
- * Control Register)
- * While Sys_Ctl is written here, dev_select() is not needed.
- */
- tx4939ide_writew(sysctl, base, TX4939IDE_Sys_Ctl);
-}
-
-static void tx4939ide_tf_load(ide_drive_t *drive, struct ide_taskfile *tf,
- u8 valid)
-{
- ide_tf_load(drive, tf, valid);
-
- if (valid & IDE_VALID_DEVICE)
- tx4939ide_tf_load_fixup(drive);
-}
-
-#ifdef __BIG_ENDIAN
-
-/* custom iops (independent from SWAP_IO_SPACE) */
-static void tx4939ide_input_data_swap(ide_drive_t *drive, struct ide_cmd *cmd,
- void *buf, unsigned int len)
-{
- unsigned long port = drive->hwif->io_ports.data_addr;
- unsigned short *ptr = buf;
- unsigned int count = (len + 1) / 2;
-
- while (count--)
- *ptr++ = cpu_to_le16(__raw_readw((void __iomem *)port));
- __ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
-}
-
-static void tx4939ide_output_data_swap(ide_drive_t *drive, struct ide_cmd *cmd,
- void *buf, unsigned int len)
-{
- unsigned long port = drive->hwif->io_ports.data_addr;
- unsigned short *ptr = buf;
- unsigned int count = (len + 1) / 2;
-
- while (count--) {
- __raw_writew(le16_to_cpu(*ptr), (void __iomem *)port);
- ptr++;
- }
- __ide_flush_dcache_range((unsigned long)buf, roundup(len, 2));
-}
-
-static const struct ide_tp_ops tx4939ide_tp_ops = {
- .exec_command = ide_exec_command,
- .read_status = ide_read_status,
- .read_altstatus = ide_read_altstatus,
- .write_devctl = ide_write_devctl,
-
- .dev_select = ide_dev_select,
- .tf_load = tx4939ide_tf_load,
- .tf_read = ide_tf_read,
-
- .input_data = tx4939ide_input_data_swap,
- .output_data = tx4939ide_output_data_swap,
-};
-
-#else /* __LITTLE_ENDIAN */
-
-static const struct ide_tp_ops tx4939ide_tp_ops = {
- .exec_command = ide_exec_command,
- .read_status = ide_read_status,
- .read_altstatus = ide_read_altstatus,
- .write_devctl = ide_write_devctl,
-
- .dev_select = ide_dev_select,
- .tf_load = tx4939ide_tf_load,
- .tf_read = ide_tf_read,
-
- .input_data = ide_input_data,
- .output_data = ide_output_data,
-};
-
-#endif /* __LITTLE_ENDIAN */
-
-static const struct ide_port_ops tx4939ide_port_ops = {
- .set_pio_mode = tx4939ide_set_pio_mode,
- .set_dma_mode = tx4939ide_set_dma_mode,
- .clear_irq = tx4939ide_clear_irq,
- .cable_detect = tx4939ide_cable_detect,
-};
-
-static const struct ide_dma_ops tx4939ide_dma_ops = {
- .dma_host_set = tx4939ide_dma_host_set,
- .dma_setup = tx4939ide_dma_setup,
- .dma_start = ide_dma_start,
- .dma_end = tx4939ide_dma_end,
- .dma_test_irq = tx4939ide_dma_test_irq,
- .dma_lost_irq = ide_dma_lost_irq,
- .dma_timer_expiry = ide_dma_sff_timer_expiry,
- .dma_sff_read_status = tx4939ide_dma_sff_read_status,
-};
-
-static const struct ide_port_info tx4939ide_port_info __initconst = {
- .init_hwif = tx4939ide_init_hwif,
- .init_dma = tx4939ide_init_dma,
- .port_ops = &tx4939ide_port_ops,
- .dma_ops = &tx4939ide_dma_ops,
- .tp_ops = &tx4939ide_tp_ops,
- .host_flags = IDE_HFLAG_MMIO,
- .pio_mask = ATA_PIO4,
- .mwdma_mask = ATA_MWDMA2,
- .udma_mask = ATA_UDMA5,
- .chipset = ide_generic,
-};
-
-static int __init tx4939ide_probe(struct platform_device *pdev)
-{
- struct ide_hw hw, *hws[] = { &hw };
- struct ide_host *host;
- struct resource *res;
- int irq, ret;
- unsigned long mapbase;
-
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return -ENODEV;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- if (!devm_request_mem_region(&pdev->dev, res->start,
- resource_size(res), MODNAME))
- return -EBUSY;
- mapbase = (unsigned long)devm_ioremap(&pdev->dev, res->start,
- resource_size(res));
- if (!mapbase)
- return -EBUSY;
- memset(&hw, 0, sizeof(hw));
- hw.io_ports.data_addr =
- mapbase + tx4939ide_swizzlew(TX4939IDE_Data);
- hw.io_ports.error_addr =
- mapbase + tx4939ide_swizzleb(TX4939IDE_Error_Feature);
- hw.io_ports.nsect_addr =
- mapbase + tx4939ide_swizzleb(TX4939IDE_Sec);
- hw.io_ports.lbal_addr =
- mapbase + tx4939ide_swizzleb(TX4939IDE_LBA0);
- hw.io_ports.lbam_addr =
- mapbase + tx4939ide_swizzleb(TX4939IDE_LBA1);
- hw.io_ports.lbah_addr =
- mapbase + tx4939ide_swizzleb(TX4939IDE_LBA2);
- hw.io_ports.device_addr =
- mapbase + tx4939ide_swizzleb(TX4939IDE_DevHead);
- hw.io_ports.command_addr =
- mapbase + tx4939ide_swizzleb(TX4939IDE_Stat_Cmd);
- hw.io_ports.ctl_addr =
- mapbase + tx4939ide_swizzleb(TX4939IDE_AltStat_DevCtl);
- hw.irq = irq;
- hw.dev = &pdev->dev;
-
- pr_info("TX4939 IDE interface (base %#lx, irq %d)\n", mapbase, irq);
- host = ide_host_alloc(&tx4939ide_port_info, hws, 1);
- if (!host)
- return -ENOMEM;
- /* use extra_base for base address of the all registers */
- host->ports[0]->extra_base = mapbase;
- ret = ide_host_register(host, &tx4939ide_port_info, hws);
- if (ret) {
- ide_host_free(host);
- return ret;
- }
- platform_set_drvdata(pdev, host);
- return 0;
-}
-
-static int __exit tx4939ide_remove(struct platform_device *pdev)
-{
- struct ide_host *host = platform_get_drvdata(pdev);
-
- ide_host_remove(host);
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int tx4939ide_resume(struct platform_device *dev)
-{
- struct ide_host *host = platform_get_drvdata(dev);
- ide_hwif_t *hwif = host->ports[0];
-
- tx4939ide_init_hwif(hwif);
- return 0;
-}
-#else
-#define tx4939ide_resume NULL
-#endif
-
-static struct platform_driver tx4939ide_driver = {
- .driver = {
- .name = MODNAME,
- },
- .remove = __exit_p(tx4939ide_remove),
- .resume = tx4939ide_resume,
-};
-
-module_platform_driver_probe(tx4939ide_driver, tx4939ide_probe);
-
-MODULE_DESCRIPTION("TX4939 internal IDE driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:tx4939ide");
--
2.29.2