diff options
Diffstat (limited to 'drivers/ide/mips')
| -rw-r--r-- | drivers/ide/mips/Makefile | 3 | ||||
| -rw-r--r-- | drivers/ide/mips/au1xxx-ide.c | 642 |
2 files changed, 0 insertions, 645 deletions
diff --git a/drivers/ide/mips/Makefile b/drivers/ide/mips/Makefile deleted file mode 100644 index 5873fa0b876..00000000000 --- a/drivers/ide/mips/Makefile +++ /dev/null @@ -1,3 +0,0 @@ -obj-$(CONFIG_BLK_DEV_IDE_AU1XXX) += au1xxx-ide.o - -EXTRA_CFLAGS := -Idrivers/ide diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c deleted file mode 100644 index 0ec8fd1e4dc..00000000000 --- a/drivers/ide/mips/au1xxx-ide.c +++ /dev/null @@ -1,642 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * AMD Alchemy Au1xxx IDE interface routines over the Static Bus - * - * Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions - * - * 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. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND - * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE - * Interface and Linux Device Driver" Application Note. - */ -#include <linux/types.h> -#include <linux/module.h> -#include <linux/kernel.h> -#include <linux/delay.h> -#include <linux/platform_device.h> -#include <linux/init.h> -#include <linux/ide.h> -#include <linux/scatterlist.h> - -#include <asm/mach-au1x00/au1xxx.h> -#include <asm/mach-au1x00/au1xxx_dbdma.h> -#include <asm/mach-au1x00/au1xxx_ide.h> - -#define DRV_NAME "au1200-ide" -#define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>" - -/* enable the burstmode in the dbdma */ -#define IDE_AU1XXX_BURSTMODE 1 - -static _auide_hwif auide_hwif; - -#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) - -void auide_insw(unsigned long port, void *addr, u32 count) -{ - _auide_hwif *ahwif = &auide_hwif; - chan_tab_t *ctp; - au1x_ddma_desc_t *dp; - - if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, - DDMA_FLAGS_NOIE)) { - printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); - return; - } - ctp = *((chan_tab_t **)ahwif->rx_chan); - dp = ctp->cur_ptr; - while (dp->dscr_cmd0 & DSCR_CMD0_V) - ; - ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); -} - -void auide_outsw(unsigned long port, void *addr, u32 count) -{ - _auide_hwif *ahwif = &auide_hwif; - chan_tab_t *ctp; - au1x_ddma_desc_t *dp; - - if(!put_source_flags(ahwif->tx_chan, (void*)addr, - count << 1, DDMA_FLAGS_NOIE)) { - printk(KERN_ERR "%s failed %d\n", __func__, __LINE__); - return; - } - ctp = *((chan_tab_t **)ahwif->tx_chan); - dp = ctp->cur_ptr; - while (dp->dscr_cmd0 & DSCR_CMD0_V) - ; - ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); -} - -static void au1xxx_input_data(ide_drive_t *drive, struct request *rq, - void *buf, unsigned int len) -{ - auide_insw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2); -} - -static void au1xxx_output_data(ide_drive_t *drive, struct request *rq, - void *buf, unsigned int len) -{ - auide_outsw(drive->hwif->io_ports.data_addr, buf, (len + 1) / 2); -} -#endif - -static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio) -{ - int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); - - /* set pio mode! */ - switch(pio) { - case 0: - mem_sttime = SBC_IDE_TIMING(PIO0); - - /* set configuration for RCS2# */ - mem_stcfg |= TS_MASK; - mem_stcfg &= ~TCSOE_MASK; - mem_stcfg &= ~TOECS_MASK; - mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS; - break; - - case 1: - mem_sttime = SBC_IDE_TIMING(PIO1); - - /* set configuration for RCS2# */ - mem_stcfg |= TS_MASK; - mem_stcfg &= ~TCSOE_MASK; - mem_stcfg &= ~TOECS_MASK; - mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS; - break; - - case 2: - mem_sttime = SBC_IDE_TIMING(PIO2); - - /* set configuration for RCS2# */ - mem_stcfg &= ~TS_MASK; - mem_stcfg &= ~TCSOE_MASK; - mem_stcfg &= ~TOECS_MASK; - mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; - break; - - case 3: - mem_sttime = SBC_IDE_TIMING(PIO3); - - /* set configuration for RCS2# */ - mem_stcfg &= ~TS_MASK; - mem_stcfg &= ~TCSOE_MASK; - mem_stcfg &= ~TOECS_MASK; - mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; - - break; - - case 4: - mem_sttime = SBC_IDE_TIMING(PIO4); - - /* set configuration for RCS2# */ - mem_stcfg &= ~TS_MASK; - mem_stcfg &= ~TCSOE_MASK; - mem_stcfg &= ~TOECS_MASK; - mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; - break; - } - - au_writel(mem_sttime,MEM_STTIME2); - au_writel(mem_stcfg,MEM_STCFG2); -} - -static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed) -{ - int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); - - switch(speed) { -#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA - case XFER_MW_DMA_2: - mem_sttime = SBC_IDE_TIMING(MDMA2); - - /* set configuration for RCS2# */ - mem_stcfg &= ~TS_MASK; - mem_stcfg &= ~TCSOE_MASK; - mem_stcfg &= ~TOECS_MASK; - mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; - - break; - case XFER_MW_DMA_1: - mem_sttime = SBC_IDE_TIMING(MDMA1); - - /* set configuration for RCS2# */ - mem_stcfg &= ~TS_MASK; - mem_stcfg &= ~TCSOE_MASK; - mem_stcfg &= ~TOECS_MASK; - mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; - - break; - case XFER_MW_DMA_0: - mem_sttime = SBC_IDE_TIMING(MDMA0); - - /* set configuration for RCS2# */ - mem_stcfg |= TS_MASK; - mem_stcfg &= ~TCSOE_MASK; - mem_stcfg &= ~TOECS_MASK; - mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; - - break; -#endif - } - - au_writel(mem_sttime,MEM_STTIME2); - au_writel(mem_stcfg,MEM_STCFG2); -} - -/* - * Multi-Word DMA + DbDMA functions - */ - -#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA -static int auide_build_dmatable(ide_drive_t *drive) -{ - int i, iswrite, count = 0; - ide_hwif_t *hwif = HWIF(drive); - struct request *rq = HWGROUP(drive)->rq; - _auide_hwif *ahwif = &auide_hwif; - struct scatterlist *sg; - - iswrite = (rq_data_dir(rq) == WRITE); - /* Save for interrupt context */ - ahwif->drive = drive; - - hwif->sg_nents = i = ide_build_sglist(drive, rq); - - if (!i) - return 0; - - /* fill the descriptors */ - sg = hwif->sg_table; - while (i && sg_dma_len(sg)) { - u32 cur_addr; - u32 cur_len; - - cur_addr = sg_dma_address(sg); - cur_len = sg_dma_len(sg); - - while (cur_len) { - u32 flags = DDMA_FLAGS_NOIE; - unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; - - if (++count >= PRD_ENTRIES) { - printk(KERN_WARNING "%s: DMA table too small\n", - drive->name); - goto use_pio_instead; - } - - /* Lets enable intr for the last descriptor only */ - if (1==i) - flags = DDMA_FLAGS_IE; - else - flags = DDMA_FLAGS_NOIE; - - if (iswrite) { - if(!put_source_flags(ahwif->tx_chan, - (void*) sg_virt(sg), - tc, flags)) { - printk(KERN_ERR "%s failed %d\n", - __func__, __LINE__); - } - } else - { - if(!put_dest_flags(ahwif->rx_chan, - (void*) sg_virt(sg), - tc, flags)) { - printk(KERN_ERR "%s failed %d\n", - __func__, __LINE__); - } - } - - cur_addr += tc; - cur_len -= tc; - } - sg = sg_next(sg); - i--; - } - - if (count) - return 1; - - use_pio_instead: - ide_destroy_dmatable(drive); - - return 0; /* revert to PIO for this request */ -} - -static int auide_dma_end(ide_drive_t *drive) -{ - ide_hwif_t *hwif = HWIF(drive); - - if (hwif->sg_nents) { - ide_destroy_dmatable(drive); - hwif->sg_nents = 0; - } - - return 0; -} - -static void auide_dma_start(ide_drive_t *drive ) -{ -} - - -static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) -{ - /* issue cmd to drive */ - ide_execute_command(drive, command, &ide_dma_intr, - (2*WAIT_CMD), NULL); -} - -static int auide_dma_setup(ide_drive_t *drive) -{ - struct request *rq = HWGROUP(drive)->rq; - - if (!auide_build_dmatable(drive)) { - ide_map_sg(drive, rq); - return 1; - } - - drive->waiting_for_dma = 1; - return 0; -} - -static int auide_dma_test_irq(ide_drive_t *drive) -{ - /* If dbdma didn't execute the STOP command yet, the - * active bit is still set - */ - drive->waiting_for_dma++; - if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { - printk(KERN_WARNING "%s: timeout waiting for ddma to \ - complete\n", drive->name); - return 1; - } - udelay(10); - return 0; -} - -static void auide_dma_host_set(ide_drive_t *drive, int on) -{ -} - -static void auide_ddma_tx_callback(int irq, void *param) -{ - _auide_hwif *ahwif = (_auide_hwif*)param; - ahwif->drive->waiting_for_dma = 0; -} - -static void auide_ddma_rx_callback(int irq, void *param) -{ - _auide_hwif *ahwif = (_auide_hwif*)param; - ahwif->drive->waiting_for_dma = 0; -} - -#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ - -static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags) -{ - dev->dev_id = dev_id; - dev->dev_physaddr = (u32)IDE_PHYS_ADDR; - dev->dev_intlevel = 0; - dev->dev_intpolarity = 0; - dev->dev_tsize = tsize; - dev->dev_devwidth = devwidth; - dev->dev_flags = flags; -} - -#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA -static const struct ide_dma_ops au1xxx_dma_ops = { - .dma_host_set = auide_dma_host_set, - .dma_setup = auide_dma_setup, - .dma_exec_cmd = auide_dma_exec_cmd, - .dma_start = auide_dma_start, - .dma_end = auide_dma_end, - .dma_test_irq = auide_dma_test_irq, - .dma_lost_irq = ide_dma_lost_irq, - .dma_timeout = ide_dma_timeout, -}; - -static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d) -{ - _auide_hwif *auide = &auide_hwif; - dbdev_tab_t source_dev_tab, target_dev_tab; - u32 dev_id, tsize, devwidth, flags; - - dev_id = IDE_DDMA_REQ; - - tsize = 8; /* 1 */ - devwidth = 32; /* 16 */ - -#ifdef IDE_AU1XXX_BURSTMODE - flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; -#else - flags = DEV_FLAGS_SYNC; -#endif - - /* setup dev_tab for tx channel */ - auide_init_dbdma_dev( &source_dev_tab, - dev_id, - tsize, devwidth, DEV_FLAGS_OUT | flags); - auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); - - auide_init_dbdma_dev( &source_dev_tab, - dev_id, - tsize, devwidth, DEV_FLAGS_IN | flags); - auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); - - /* We also need to add a target device for the DMA */ - auide_init_dbdma_dev( &target_dev_tab, - (u32)DSCR_CMD0_ALWAYS, - tsize, devwidth, DEV_FLAGS_ANYUSE); - auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); - - /* Get a channel for TX */ - auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, - auide->tx_dev_id, - auide_ddma_tx_callback, - (void*)auide); - - /* Get a channel for RX */ - auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, - auide->target_dev_id, - auide_ddma_rx_callback, - (void*)auide); - - auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, - NUM_DESCRIPTORS); - auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, - NUM_DESCRIPTORS); - - /* FIXME: check return value */ - (void)ide_allocate_dma_engine(hwif); - - au1xxx_dbdma_start( auide->tx_chan ); - au1xxx_dbdma_start( auide->rx_chan ); - - return 0; -} -#else -static int auide_ddma_init(ide_hwif_t *hwif, const struct ide_port_info *d) -{ - _auide_hwif *auide = &auide_hwif; - dbdev_tab_t source_dev_tab; - int flags; - -#ifdef IDE_AU1XXX_BURSTMODE - flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; -#else - flags = DEV_FLAGS_SYNC; -#endif - - /* setup dev_tab for tx channel */ - auide_init_dbdma_dev( &source_dev_tab, - (u32)DSCR_CMD0_ALWAYS, - 8, 32, DEV_FLAGS_OUT | flags); - auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); - - auide_init_dbdma_dev( &source_dev_tab, - (u32)DSCR_CMD0_ALWAYS, - 8, 32, DEV_FLAGS_IN | flags); - auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); - - /* Get a channel for TX */ - auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, - auide->tx_dev_id, - NULL, - (void*)auide); - - /* Get a channel for RX */ - auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, - DSCR_CMD0_ALWAYS, - NULL, - (void*)auide); - - auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, - NUM_DESCRIPTORS); - auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, - NUM_DESCRIPTORS); - - au1xxx_dbdma_start( auide->tx_chan ); - au1xxx_dbdma_start( auide->rx_chan ); - - return 0; -} -#endif - -static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) -{ - int i; - unsigned long *ata_regs = hw->io_ports_array; - - /* FIXME? */ - for (i = 0; i < 8; i++) - *ata_regs++ = ahwif->regbase + (i << IDE_REG_SHIFT); - - /* set the Alternative Status register */ - *ata_regs = ahwif->regbase + (14 << IDE_REG_SHIFT); -} - -#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA -static const struct ide_tp_ops au1xxx_tp_ops = { - .exec_command = ide_exec_command, - .read_status = ide_read_status, - .read_altstatus = ide_read_altstatus, - .read_sff_dma_status = ide_read_sff_dma_status, - - .set_irq = ide_set_irq, - - .tf_load = ide_tf_load, - .tf_read = ide_tf_read, - - .input_data = au1xxx_input_data, - .output_data = au1xxx_output_data, -}; -#endif - -static const struct ide_port_ops au1xxx_port_ops = { - .set_pio_mode = au1xxx_set_pio_mode, - .set_dma_mode = auide_set_dma_mode, -}; - -static const struct ide_port_info au1xxx_port_info = { - .init_dma = auide_ddma_init, -#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA - .tp_ops = &au1xxx_tp_ops, -#endif - .port_ops = &au1xxx_port_ops, -#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA - .dma_ops = &au1xxx_dma_ops, -#endif - .host_flags = IDE_HFLAG_POST_SET_MODE | - IDE_HFLAG_NO_IO_32BIT | - IDE_HFLAG_UNMASK_IRQS, - .pio_mask = ATA_PIO4, -#ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA - .mwdma_mask = ATA_MWDMA2, -#endif -}; - -static int au_ide_probe(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - _auide_hwif *ahwif = &auide_hwif; - struct resource *res; - struct ide_host *host; - int ret = 0; - hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL }; - -#if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) - char *mode = "MWDMA2"; -#elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) - char *mode = "PIO+DDMA(offload)"; -#endif - - memset(&auide_hwif, 0, sizeof(_auide_hwif)); - ahwif->irq = platform_get_irq(pdev, 0); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - if (res == NULL) { - pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); - ret = -ENODEV; - goto out; - } - if (ahwif->irq < 0) { - pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id); - ret = -ENODEV; - goto out; - } - - if (!request_mem_region(res->start, res->end - res->start + 1, - pdev->name)) { - pr_debug("%s: request_mem_region failed\n", DRV_NAME); - ret = -EBUSY; - goto out; - } - - ahwif->regbase = (u32)ioremap(res->start, res->end - res->start + 1); - if (ahwif->regbase == 0) { - ret = -ENOMEM; - goto out; - } - - memset(&hw, 0, sizeof(hw)); - auide_setup_ports(&hw, ahwif); - hw.irq = ahwif->irq; - hw.dev = dev; - hw.chipset = ide_au1xxx; - - ret = ide_host_add(&au1xxx_port_info, hws, &host); - if (ret) - goto out; - - auide_hwif.hwif = host->ports[0]; - - dev_set_drvdata(dev, host); - - printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); - - out: - return ret; -} - -static int au_ide_remove(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct resource *res; - struct ide_host *host = dev_get_drvdata(dev); - _auide_hwif *ahwif = &auide_hwif; - - ide_host_remove(host); - - iounmap((void *)ahwif->regbase); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, res->end - res->start + 1); - - return 0; -} - -static struct device_driver au1200_ide_driver = { - .name = "au1200-ide", - .bus = &platform_bus_type, - .probe = au_ide_probe, - .remove = au_ide_remove, -}; - -static int __init au_ide_init(void) -{ - return driver_register(&au1200_ide_driver); -} - -static void __exit au_ide_exit(void) -{ - driver_unregister(&au1200_ide_driver); -} - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("AU1200 IDE driver"); - -module_init(au_ide_init); -module_exit(au_ide_exit); |