Driver for the on-board IDE interface on CS-Lab Warp Expansion Card (NOTE that idemode=native has to be set in Warp Configuration) Signed-off-by: Paolo Pisati <p.pisati@xxxxxxxxx> --- drivers/ata/Kconfig | 11 +++ drivers/ata/Makefile | 1 + drivers/ata/pata_cswarp.c | 186 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 198 insertions(+) create mode 100644 drivers/ata/pata_cswarp.c diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig index e00536b49552..a278386f0fa2 100644 --- a/drivers/ata/Kconfig +++ b/drivers/ata/Kconfig @@ -1025,6 +1025,17 @@ config PATA_GAYLE If unsure, say N. +config PATA_CSWARP + tristate "Amiga CS Warp PATA support" + depends on M68K && AMIGA + help + This option enables support for the on-board IDE interface on + CS-Lab Warp Expansion Card (NOTE that idemode=native has to be + set in Warp Configuration) + + If unsure, say N. + + config PATA_BUDDHA tristate "Buddha/Catweasel/X-Surf PATA support" depends on ZORRO diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile index 20e6645ab737..7b9b87ebacea 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-$(CONFIG_PATA_CSWARP) += pata_cswarp.o obj-$(CONFIG_PATA_BUDDHA) += pata_buddha.o obj-$(CONFIG_PATA_ISAPNP) += pata_isapnp.o obj-$(CONFIG_PATA_IXP4XX_CF) += pata_ixp4xx_cf.o diff --git a/drivers/ata/pata_cswarp.c b/drivers/ata/pata_cswarp.c new file mode 100644 index 000000000000..fd135fe3bde7 --- /dev/null +++ b/drivers/ata/pata_cswarp.c @@ -0,0 +1,186 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * Amiga CS Warp PATA controller driver + * + * Copyright (c) 2024 CS-Lab s.c. + * http://www.cs-lab.eu + * + * Based on pata_gayle.c, pata_buddha.c and warpATA.device: + * + * Created 2 Jun 2024 by Andrzej Rogozynski + */ + +#include <linux/ata.h> +#include <linux/blkdev.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/libata.h> +#include <linux/mm.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/zorro.h> +#include <scsi/scsi_cmnd.h> +#include <scsi/scsi_host.h> + +#include <asm/amigahw.h> +#include <asm/amigaints.h> +#include <asm/amigayle.h> +#include <asm/setup.h> + +#define DRV_NAME "pata_cswarp" + +#define WARP_OFFSET_ATA 0x6000 + +static const struct scsi_host_template pata_cswarp_sht = { + ATA_PIO_SHT(DRV_NAME), +}; + +static unsigned int pata_cswarp_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_cswarp_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_cswarp_ops = { + .inherits = &ata_sff_port_ops, + .sff_data_xfer = pata_cswarp_data_xfer, + .cable_detect = ata_cable_unknown, + .set_mode = pata_cswarp_set_mode, +}; + +static int pata_cswarp_probe(struct zorro_dev *z, + const struct zorro_device_id *ent) +{ + static const char board_name[] = "csWarp"; + struct ata_host *host; + struct ata_port *ap; + void __iomem *cswarp_ctrl_board, *base; + unsigned long board = z->resource.start; + + dev_info(&z->dev, "%s IDE controller (board: 0x%lx)\n", board_name, + board); + + if (!devm_request_mem_region(&z->dev, board + WARP_OFFSET_ATA, 0x1800, + DRV_NAME)) + return -ENXIO; + + host = ata_host_alloc(&z->dev, 1); + if (!host) + return -ENXIO; + + cswarp_ctrl_board = (void *)board; + + ap = host->ports[0]; + base = cswarp_ctrl_board + WARP_OFFSET_ATA; + + ap->ops = &pata_cswarp_ops; + + ap->pio_mask = ATA_PIO4; + ap->flags |= ATA_FLAG_SLAVE_POSS | ATA_FLAG_NO_IORDY | + ATA_FLAG_PIO_POLLING; + + ap->ioaddr.data_addr = base; + ap->ioaddr.error_addr = base + 1 * 4; + ap->ioaddr.feature_addr = base + 1 * 4; + ap->ioaddr.nsect_addr = base + 2 * 4; + ap->ioaddr.lbal_addr = base + 3 * 4; + ap->ioaddr.lbam_addr = base + 4 * 4; + ap->ioaddr.lbah_addr = base + 5 * 4; + ap->ioaddr.device_addr = base + 6 * 4; + ap->ioaddr.status_addr = base + 7 * 4; + ap->ioaddr.command_addr = base + 7 * 4; + + ap->ioaddr.altstatus_addr = base + (0x1000 | (6UL << 2)); + ap->ioaddr.ctl_addr = base + (0x1000 | (6UL << 2)); + + ata_port_desc(ap, " cmd 0x%lx ctl 0x%lx", (unsigned long)base, + (unsigned long)ap->ioaddr.ctl_addr); + + return ata_host_activate(host, 0, NULL, + IRQF_SHARED, &pata_cswarp_sht); +} + +static void pata_cswarp_remove(struct zorro_dev *z) +{ + struct ata_host *host = dev_get_drvdata(&z->dev); + + ata_host_detach(host); +} + +static const struct zorro_device_id pata_cswarp_zorro_tbl[] = { + { ZORRO_PROD_CSLAB_WARP_1260, 0}, + { 0 } +}; +MODULE_DEVICE_TABLE(zorro, pata_cswarp_zorro_tbl); + +static struct zorro_driver pata_cswarp_driver = { + .name = "pata_cswarp", + .id_table = pata_cswarp_zorro_tbl, + .probe = pata_cswarp_probe, + .remove = pata_cswarp_remove, +}; + +static int __init pata_cswarp_init(void) { + return zorro_register_driver(&pata_cswarp_driver); +} + +static void __exit pata_cswarp_unregister(void) { + zorro_unregister_driver(&pata_cswarp_driver); +} + +module_init(pata_cswarp_init); +module_exit(pata_cswarp_unregister); + +MODULE_AUTHOR("Andrzej Rogozynski"); +MODULE_DESCRIPTION("low-level driver for CSWarp PATA"); +MODULE_LICENSE("GPL"); -- 2.34.1
