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Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrNKsWRmVeSWpSXmKPExsWy7djPc7rzlGJiDP6vt7ZYfbefzWLjjPWs Fs9u7WWymP1e2eLYjkdMFpd3zWGzWP5kLbPF3Nbp7A4cHjtn3WX3uHy21OPQ4Q5Gj5Ot31g8 Dp47x+jRt2UVo8fnTXIB7FFcNimpOZllqUX6dglcGcce9bMVnHGvWNAp28DYbdnFyMkhIWAi caztCVsXIxeHkMAKRonj3+5BOV8YJT5Ou8oC4XxmlGiZ+o0RpuVmSytU1XJGiXNPTrJCOO8Z JfZO+McMUiUioCDR83slWBWzwHImiT8nesESbAJWEhPbV4GNEgayp978zwJi8wrYSXx42s4G YrMIqEjcOrqMvYuRg0NUIEKi/4w6RImgxMmZT8DKmQXkJba/ncMMMl9CYB67xOPrS6DOc5G4 9L2BBcIWlnh1fAs7hC0j8X/nfCaIhumMEm9+LWWBcNYzSqw5c4wJospa4vDxi6wgm5kFNCXW 79IHMSUEHCXO3vGFMPkkbrwVhLiBT2LStunMEGFeiY42IYgZahIblm1gg9natXMlM4TtIXHl zz2wuJBArMTRLw9ZJjAqzELy2Swkn81COGEBI/MqRvHU0uLc9NRi47zUcr3ixNzi0rx0veT8 3E2MwCR0+t/xrzsY9/1JOsQowMGoxMMbcCsqRog1say4MvcQowQHs5IIr5hcTIwQb0piZVVq UX58UWlOavEhRmkOFiVx3mqGB9FCAumJJanZqakFqUUwWSYOTqkGRsaDZwwLT13Z67vX8UKb Z/3eQy/eWMoVJu//N+FLUFKPjEDeuuybp56feHBz1cem8oebWuPsBZ+/4d49xXAjh0TiFxOz MA2ZHhOJ3bmm6gf/WBc5zWP/KOCwIGBZmu8laVlfZoZ7LI+3hK8R0ZqzN0KvaYqIQirr23/u zE5b3s96WlHDfuJVshJLcUaioRZzUXEiAIK9tjI+AwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBIsWRmVeSWpSXmKPExsVy+t/xe7rzlGJiDNraeSxW3+1ns9g4Yz2r xbNbe5ksZr9Xtji24xGTxeVdc9gslj9Zy2wxt3U6uwOHx85Zd9k9Lp8t9Th0uIPR42TrNxaP g+fOMXr0bVnF6PF5k1wAe5SeTVF+aUmqQkZ+cYmtUrShhZGeoaWFnpGJpZ6hsXmslZGpkr6d TUpqTmZZapG+XYJexrFH/WwFZ9wrFnTKNjB2W3YxcnJICJhI3GxpZeti5OIQEljKKPFrXhdz FyMHUEJG4vj6MogaYYk/17rYQGwhgbeMEs+XZYDYIgIKEj2/V4L1MgusZJKYePMyWBGbgJXE xPZVjCC2MJA99eZ/FhCbV8BO4sPTdrAaFgEViVtHl7GD2KICERK3HnZA1QhKnJz5BMxmFlCX +DPvEjOELS+x/e0c5gmM/LOQlM1CUjYLSdkCRuZVjCKppcW56bnFhnrFibnFpXnpesn5uZsY gbGy7djPzTsYL20MPsQowMGoxMMbcCsqRog1say4MvcQowQHs5IIr5hcTIwQb0piZVVqUX58 UWlOavEhRlOgwycyS4km5wPjOK8k3tDU0NzC0tDc2NzYzEJJnPe8QWWUkEB6YklqdmpqQWoR TB8TB6dUA2NmxazDfxbXaHwKXav2ZAn3JF35qucrD5y4ETHh7rvAlpN1F5dedm2JeSb10nHb vZ0ynpOTPq87ZR1226JKqFH9/MVZksxatoH1S81SlslObfApPSwVfZaJ9wTvhINreZlcis/L rOy/a+999+GLo2t/rqvNN9FdmPhGnLHuj2ZLderDlZusFtkpsRRnJBpqMRcVJwIAxjzzLasC AAA= X-CMS-MailID: 20190207122046eucas1p12d098289e0370252d341ccfed66b8295 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20190207122046eucas1p12d098289e0370252d341ccfed66b8295 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20190207122046eucas1p12d098289e0370252d341ccfed66b8295 References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add Buddha PATA controller driver. It enables libata support for the Buddha, Catweasel and X-Surf expansion boards on the Zorro expansion bus. Module removal is currently unsupported (the old IDE's buddha driver also doesn't support it). Tested-by: John Paul Adrian Glaubitz Cc: Michael Schmitz Cc: Geert Uytterhoeven Signed-off-by: Bartlomiej Zolnierkiewicz --- v2: - added Tested-by from John - enhanced patch description Jens, please consider merging for v5.1. drivers/ata/Kconfig | 12 +++ drivers/ata/Makefile | 1 + drivers/ata/pata_buddha.c | 257 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 270 insertions(+) create mode 100644 drivers/ata/pata_buddha.c diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index 4ca7a6b..4535a08 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -963,6 +963,18 @@ config PATA_GAYLE If unsure, say N. +config PATA_BUDDHA + tristate "Buddha/Catweasel/X-Surf PATA support" + depends on ZORRO + help + This option enables support for the IDE interfaces + on the Buddha, Catweasel and X-Surf expansion boards + on the Zorro expansion bus. It supports up to two + interfaces on the Buddha, three on the Catweasel and + two on the X-Surf. + + If unsure, say N. + config PATA_ISAPNP tristate "ISA Plug and Play PATA support" depends on ISAPNP diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile index d21cdd8..d8cc2e0 100644 --- a/drivers/ata/Makefile +++ b/drivers/ata/Makefile @@ -98,6 +98,7 @@ obj-$(CONFIG_PATA_WINBOND) += pata_sl82c105.o obj-$(CONFIG_PATA_CMD640_PCI) += pata_cmd640.o obj-$(CONFIG_PATA_FALCON) += pata_falcon.o obj-$(CONFIG_PATA_GAYLE) += pata_gayle.o +obj-$(CONFIG_PATA_BUDDHA) += pata_buddha.o obj-$(CONFIG_PATA_ISAPNP) += pata_isapnp.o obj-$(CONFIG_PATA_IXP4XX_CF) += pata_ixp4xx_cf.o obj-$(CONFIG_PATA_MPIIX) += pata_mpiix.o diff --git a/drivers/ata/pata_buddha.c b/drivers/ata/pata_buddha.c new file mode 100644 index 0000000..11a8044 --- /dev/null +++ b/drivers/ata/pata_buddha.c @@ -0,0 +1,257 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Buddha, Catweasel and X-Surf PATA controller driver + * + * Copyright (c) 2018 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * Based on buddha.c: + * + * Copyright (C) 1997, 2001 by Geert Uytterhoeven and others + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#define DRV_NAME "pata_buddha" +#define DRV_VERSION "0.1.0" + +#define BUDDHA_BASE1 0x800 +#define BUDDHA_BASE2 0xa00 +#define BUDDHA_BASE3 0xc00 +#define XSURF_BASE1 0xb000 /* 2.5" interface */ +#define XSURF_BASE2 0xd000 /* 3.5" interface */ +#define BUDDHA_CONTROL 0x11a +#define BUDDHA_IRQ 0xf00 +#define XSURF_IRQ 0x7e +#define BUDDHA_IRQ_MR 0xfc0 /* master interrupt enable */ + +enum { + BOARD_BUDDHA = 0, + BOARD_CATWEASEL, + BOARD_XSURF +}; + +static unsigned int buddha_bases[3] __initdata = { + BUDDHA_BASE1, BUDDHA_BASE2, BUDDHA_BASE3 +}; + +static unsigned int xsurf_bases[2] __initdata = { + XSURF_BASE1, XSURF_BASE2 +}; + +static struct scsi_host_template pata_buddha_sht = { + ATA_PIO_SHT(DRV_NAME), +}; + +/* FIXME: is this needed? */ +static unsigned int pata_buddha_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; + + /* Transfer multiple of 2 bytes */ + if (rw == READ) + raw_insw((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) { + raw_insw((u16 *)data_addr, (u16 *)pad, 1); + *buf = pad[0]; + } else { + pad[0] = *buf; + 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_buddha_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 bool pata_buddha_irq_check(struct ata_port *ap) +{ + u8 ch; + + ch = z_readb((unsigned long)ap->private_data); + + return !!(ch & 0x80); +} + +static void pata_xsurf_irq_clear(struct ata_port *ap) +{ + z_writeb(0, (unsigned long)ap->private_data); +} + +static struct ata_port_operations pata_buddha_ops = { + .inherits = &ata_sff_port_ops, + .sff_data_xfer = pata_buddha_data_xfer, + .sff_irq_check = pata_buddha_irq_check, + .cable_detect = ata_cable_unknown, + .set_mode = pata_buddha_set_mode, +}; + +static struct ata_port_operations pata_xsurf_ops = { + .inherits = &ata_sff_port_ops, + .sff_data_xfer = pata_buddha_data_xfer, + .sff_irq_check = pata_buddha_irq_check, + .sff_irq_clear = pata_xsurf_irq_clear, + .cable_detect = ata_cable_unknown, + .set_mode = pata_buddha_set_mode, +}; + +static int __init pata_buddha_init_one(void) +{ + struct zorro_dev *z = NULL; + + while ((z = zorro_find_device(ZORRO_WILDCARD, z))) { + static const char *board_name[] + = { "Buddha", "Catweasel", "X-Surf" }; + struct ata_host *host; + void __iomem *buddha_board; + unsigned long board; + unsigned int type, nr_ports = 2; + int i; + + if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA) { + type = BOARD_BUDDHA; + } else if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_CATWEASEL) { + type = BOARD_CATWEASEL; + nr_ports++; + } else if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_X_SURF) { + type = BOARD_XSURF; + } else + continue; + + dev_info(&z->dev, "%s IDE controller\n", board_name[type]); + + board = z->resource.start; + + if (type != BOARD_XSURF) { + if (!devm_request_mem_region(&z->dev, + board + BUDDHA_BASE1, + 0x800, DRV_NAME)) + continue; + } else { + if (!devm_request_mem_region(&z->dev, + board + XSURF_BASE1, + 0x1000, DRV_NAME)) + continue; + if (!devm_request_mem_region(&z->dev, + board + XSURF_BASE2, + 0x1000, DRV_NAME)) + continue; + } + + /* allocate host */ + host = ata_host_alloc(&z->dev, nr_ports); + if (!host) + continue; + + buddha_board = ZTWO_VADDR(board); + + /* enable the board IRQ on Buddha/Catweasel */ + if (type != BOARD_XSURF) + z_writeb(0, buddha_board + BUDDHA_IRQ_MR); + + for (i = 0; i < nr_ports; i++) { + struct ata_port *ap = host->ports[i]; + void __iomem *base, *irqport; + unsigned long ctl = 0; + + if (type != BOARD_XSURF) { + ap->ops = &pata_buddha_ops; + base = buddha_board + buddha_bases[i]; + ctl = BUDDHA_CONTROL; + irqport = buddha_board + BUDDHA_IRQ + i * 0x40; + } else { + ap->ops = &pata_xsurf_ops; + base = buddha_board + xsurf_bases[i]; + /* X-Surf has no CS1* (Control/AltStat) */ + irqport = buddha_board + XSURF_IRQ; + } + + ap->pio_mask = ATA_PIO4; + ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY; + + ap->ioaddr.data_addr = base; + ap->ioaddr.error_addr = base + 2 + 1 * 4; + ap->ioaddr.feature_addr = base + 2 + 1 * 4; + ap->ioaddr.nsect_addr = base + 2 + 2 * 4; + ap->ioaddr.lbal_addr = base + 2 + 3 * 4; + ap->ioaddr.lbam_addr = base + 2 + 4 * 4; + ap->ioaddr.lbah_addr = base + 2 + 5 * 4; + ap->ioaddr.device_addr = base + 2 + 6 * 4; + ap->ioaddr.status_addr = base + 2 + 7 * 4; + ap->ioaddr.command_addr = base + 2 + 7 * 4; + + if (ctl) { + ap->ioaddr.altstatus_addr = base + ctl; + ap->ioaddr.ctl_addr = base + ctl; + } + + ap->private_data = (void *)irqport; + + ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx", board, + ctl ? board + buddha_bases[i] + ctl : 0); + } + + ata_host_activate(host, IRQ_AMIGA_PORTS, ata_sff_interrupt, + IRQF_SHARED, &pata_buddha_sht); + + } + + return 0; +} + +module_init(pata_buddha_init_one); + +MODULE_AUTHOR("Bartlomiej Zolnierkiewicz"); +MODULE_DESCRIPTION("low-level driver for Buddha/Catweasel/X-Surf PATA"); +MODULE_LICENSE("GPL v2"); +MODULE_VERSION(DRV_VERSION); -- 1.9.1