From: Linus Torvalds Date: Wed, 22 Feb 2017 01:21:32 +0000 (-0800) Subject: Merge branch 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=79f4d1d5c0d7d115b5a693a5bb369e69efb7e7a5;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git Merge branch 'for-4.11' of git://git./linux/kernel/git/tj/libata Pull libata updates from Tejun Heo: - Bartlomiej added pata_falcon - Christoph is trying to remove use of static 4k buf. It's still WIP - config cleanup around HAS_DMA - other fixes and driver-specific changes * 'for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (29 commits) ata: pata_of_platform: using of_property_read_u32() helper pata_atiixp: Don't use unconnected secondary port on SB600/SB700 libata-sff: Don't scan disabled ports when checking for legacy mode. pata_octeon_cf: remove unused local variables from octeon_cf_set_piomode() ahci: qoriq: added ls2088a platforms support ahci: qoriq: report error when ecc register address is missing in dts ahci: qoriq: added a condition to enable dma coherence Revert "libata: switch to dynamic allocation instead of ata_scsi_rbuf" ahci: imx: fix building without hwmon or thermal ata: add Atari Falcon PATA controller driver ata: pass queued command to ->sff_data_xfer method ata: allow subsystem to be used on m68k arch libata: switch to dynamic allocation instead of ata_scsi_rbuf libata: don't call ata_scsi_rbuf_fill for command without a response buffer libata: call ->scsi_done from ata_scsi_simulate libata: remove the done callback from ata_scsi_args libata: move struct ata_scsi_args to libata-scsi.c libata: avoid global response buffer in atapi_qc_complete libata-eh: Use switch() instead of sparse array for protocol strings ata: sata_mv: Convert to devm_ioremap_resource() ... --- 79f4d1d5c0d7d115b5a693a5bb369e69efb7e7a5 diff --cc drivers/ata/pata_falcon.c index 000000000000,78264082a4cf..5b0c57d1c59f mode 000000,100644..100644 --- a/drivers/ata/pata_falcon.c +++ b/drivers/ata/pata_falcon.c @@@ -1,0 -1,184 +1,184 @@@ + /* + * Atari Falcon PATA controller driver + * + * Copyright (c) 2016 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Based on falconide.c: + * + * Created 12 Jul 1997 by Geert Uytterhoeven + * + * 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. + */ + + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + #include + + #include + #include + #include + #include + #include + + #define DRV_NAME "pata_falcon" + #define DRV_VERSION "0.1.0" + + #define ATA_HD_BASE 0xfff00000 + #define ATA_HD_CONTROL 0x39 + + static struct scsi_host_template pata_falcon_sht = { + ATA_PIO_SHT(DRV_NAME), + }; + + static unsigned int pata_falcon_data_xfer(struct ata_queued_cmd *qc, + unsigned char *buf, + unsigned int buflen, int rw) + { + struct ata_device *dev = qc->dev; + struct ata_port *ap = dev->link->ap; + void __iomem *data_addr = ap->ioaddr.data_addr; + unsigned int words = buflen >> 1; + struct scsi_cmnd *cmd = qc->scsicmd; + bool swap = 1; + + if (dev->class == ATA_DEV_ATA && cmd && cmd->request && - cmd->request->cmd_type == REQ_TYPE_FS) ++ !blk_rq_is_passthrough(cmd->request)) + swap = 0; + + /* Transfer multiple of 2 bytes */ + if (rw == READ) { + if (swap) + raw_insw_swapw((u16 *)data_addr, (u16 *)buf, words); + else + raw_insw((u16 *)data_addr, (u16 *)buf, words); + } else { + if (swap) + raw_outsw_swapw((u16 *)data_addr, (u16 *)buf, words); + else + raw_outsw((u16 *)data_addr, (u16 *)buf, words); + } + + /* Transfer trailing byte, if any. */ + if (unlikely(buflen & 0x01)) { + unsigned char pad[2] = { }; + + /* Point buf to the tail of buffer */ + buf += buflen - 1; + + if (rw == READ) { + if (swap) + raw_insw_swapw((u16 *)data_addr, (u16 *)pad, 1); + else + raw_insw((u16 *)data_addr, (u16 *)pad, 1); + *buf = pad[0]; + } else { + pad[0] = *buf; + if (swap) + raw_outsw_swapw((u16 *)data_addr, (u16 *)pad, 1); + else + raw_outsw((u16 *)data_addr, (u16 *)pad, 1); + } + words++; + } + + return words << 1; + } + + /* + * Provide our own set_mode() as we don't want to change anything that has + * already been configured.. + */ + static int pata_falcon_set_mode(struct ata_link *link, + struct ata_device **unused) + { + struct ata_device *dev; + + ata_for_each_dev(dev, link, ENABLED) { + /* We don't really care */ + dev->pio_mode = dev->xfer_mode = XFER_PIO_0; + dev->xfer_shift = ATA_SHIFT_PIO; + dev->flags |= ATA_DFLAG_PIO; + ata_dev_info(dev, "configured for PIO\n"); + } + return 0; + } + + static struct ata_port_operations pata_falcon_ops = { + .inherits = &ata_sff_port_ops, + .sff_data_xfer = pata_falcon_data_xfer, + .cable_detect = ata_cable_unknown, + .set_mode = pata_falcon_set_mode, + }; + + static int pata_falcon_init_one(void) + { + struct ata_host *host; + struct ata_port *ap; + struct platform_device *pdev; + void __iomem *base; + + if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE)) + return -ENODEV; + + pr_info(DRV_NAME ": Atari Falcon PATA controller\n"); + + pdev = platform_device_register_simple(DRV_NAME, 0, NULL, 0); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); + + if (!devm_request_mem_region(&pdev->dev, ATA_HD_BASE, 0x40, DRV_NAME)) { + pr_err(DRV_NAME ": resources busy\n"); + return -EBUSY; + } + + /* allocate host */ + host = ata_host_alloc(&pdev->dev, 1); + if (!host) + return -ENOMEM; + ap = host->ports[0]; + + ap->ops = &pata_falcon_ops; + ap->pio_mask = ATA_PIO4; + ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY; + ap->flags |= ATA_FLAG_PIO_POLLING; + + base = (void __iomem *)ATA_HD_BASE; + ap->ioaddr.data_addr = base; + ap->ioaddr.error_addr = base + 1 + 1 * 4; + ap->ioaddr.feature_addr = base + 1 + 1 * 4; + ap->ioaddr.nsect_addr = base + 1 + 2 * 4; + ap->ioaddr.lbal_addr = base + 1 + 3 * 4; + ap->ioaddr.lbam_addr = base + 1 + 4 * 4; + ap->ioaddr.lbah_addr = base + 1 + 5 * 4; + ap->ioaddr.device_addr = base + 1 + 6 * 4; + ap->ioaddr.status_addr = base + 1 + 7 * 4; + ap->ioaddr.command_addr = base + 1 + 7 * 4; + + ap->ioaddr.altstatus_addr = base + ATA_HD_CONTROL; + ap->ioaddr.ctl_addr = base + ATA_HD_CONTROL; + + ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", (unsigned long)base, + (unsigned long)base + ATA_HD_CONTROL); + + /* activate */ + return ata_host_activate(host, 0, NULL, 0, &pata_falcon_sht); + } + + module_init(pata_falcon_init_one); + + MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); + MODULE_DESCRIPTION("low-level driver for Atari Falcon PATA"); + MODULE_LICENSE("GPL"); + MODULE_VERSION(DRV_VERSION);