[net-next-2.6.git] / drivers / scsi / sata_uli.c

/*
 *  sata_uli.c - ULi Electronics SATA
 *
 *
 *  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, or (at your option)
 *  any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *
 *  libata documentation is available via 'make {ps|pdf}docs',
 *  as Documentation/DocBook/libata.*
 *
 *  Hardware documentation available under NDA.
 *
 */

#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include <linux/libata.h>

#define DRV_NAME	"sata_uli"
#define DRV_VERSION	"0.5"

enum {
	uli_5289		= 0,
	uli_5287		= 1,
	uli_5281		= 2,

	/* PCI configuration registers */
	ULI5287_BASE		= 0x90, /* sata0 phy SCR registers */
	ULI5287_OFFS		= 0x10, /* offset from sata0->sata1 phy regs */
	ULI5281_BASE		= 0x60, /* sata0 phy SCR  registers */
	ULI5281_OFFS		= 0x60, /* offset from sata0->sata1 phy regs */
};

static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);

static struct pci_device_id uli_pci_tbl[] = {
	{ PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 },
	{ PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 },
	{ PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5281 },
	{ }	/* terminate list */
};


static struct pci_driver uli_pci_driver = {
	.name			= DRV_NAME,
	.id_table		= uli_pci_tbl,
	.probe			= uli_init_one,
	.remove			= ata_pci_remove_one,
};

static Scsi_Host_Template uli_sht = {
	.module			= THIS_MODULE,
	.name			= DRV_NAME,
	.ioctl			= ata_scsi_ioctl,
	.queuecommand		= ata_scsi_queuecmd,
	.eh_strategy_handler	= ata_scsi_error,
	.can_queue		= ATA_DEF_QUEUE,
	.this_id		= ATA_SHT_THIS_ID,
	.sg_tablesize		= LIBATA_MAX_PRD,
	.max_sectors		= ATA_MAX_SECTORS,
	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
	.emulated		= ATA_SHT_EMULATED,
	.use_clustering		= ATA_SHT_USE_CLUSTERING,
	.proc_name		= DRV_NAME,
	.dma_boundary		= ATA_DMA_BOUNDARY,
	.slave_configure	= ata_scsi_slave_config,
	.bios_param		= ata_std_bios_param,
	.ordered_flush		= 1,
};

static struct ata_port_operations uli_ops = {
	.port_disable		= ata_port_disable,

	.tf_load		= ata_tf_load,
	.tf_read		= ata_tf_read,
	.check_status		= ata_check_status,
	.exec_command		= ata_exec_command,
	.dev_select		= ata_std_dev_select,

	.phy_reset		= sata_phy_reset,

	.bmdma_setup            = ata_bmdma_setup,
	.bmdma_start            = ata_bmdma_start,
	.bmdma_stop		= ata_bmdma_stop,
	.bmdma_status		= ata_bmdma_status,
	.qc_prep		= ata_qc_prep,
	.qc_issue		= ata_qc_issue_prot,

	.eng_timeout		= ata_eng_timeout,

	.irq_handler		= ata_interrupt,
	.irq_clear		= ata_bmdma_irq_clear,

	.scr_read		= uli_scr_read,
	.scr_write		= uli_scr_write,

	.port_start		= ata_port_start,
	.port_stop		= ata_port_stop,
	.host_stop		= ata_host_stop,
};

static struct ata_port_info uli_port_info = {
	.sht            = &uli_sht,
	.host_flags     = ATA_FLAG_SATA | ATA_FLAG_SATA_RESET |
			  ATA_FLAG_NO_LEGACY,
	.pio_mask       = 0x1f,		/* pio0-4 */
	.udma_mask      = 0x7f,		/* udma0-6 */
	.port_ops       = &uli_ops,
};


MODULE_AUTHOR("Peer Chen");
MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
MODULE_VERSION(DRV_VERSION);

static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
{
	return ap->ioaddr.scr_addr + (4 * sc_reg);
}

static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
{
	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
	unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
	u32 val;

	pci_read_config_dword(pdev, cfg_addr, &val);
	return val;
}

static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
{
	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
	unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);

	pci_write_config_dword(pdev, cfg_addr, val);
}

static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
{
	if (sc_reg > SCR_CONTROL)
		return 0xffffffffU;

	return uli_scr_cfg_read(ap, sc_reg);
}

static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
{
	if (sc_reg > SCR_CONTROL)	//SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
		return;

	uli_scr_cfg_write(ap, sc_reg, val);
}

/* move to PCI layer, integrate w/ MSI stuff */
static void pci_enable_intx(struct pci_dev *pdev)
{
	u16 pci_command;

	pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
	if (pci_command & PCI_COMMAND_INTX_DISABLE) {
		pci_command &= ~PCI_COMMAND_INTX_DISABLE;
		pci_write_config_word(pdev, PCI_COMMAND, pci_command);
	}
}

static int uli_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct ata_probe_ent *probe_ent;
	struct ata_port_info *ppi;
	int rc;
	unsigned int board_idx = (unsigned int) ent->driver_data;
	int pci_dev_busy = 0;

	rc = pci_enable_device(pdev);
	if (rc)
		return rc;

	rc = pci_request_regions(pdev, DRV_NAME);
	if (rc) {
		pci_dev_busy = 1;
		goto err_out;
	}

	rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
	if (rc)
		goto err_out_regions;
	rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
	if (rc)
		goto err_out_regions;

	ppi = &uli_port_info;
	probe_ent = ata_pci_init_native_mode(pdev, &ppi);
	if (!probe_ent) {
		rc = -ENOMEM;
		goto err_out_regions;
	}

	switch (board_idx) {
	case uli_5287:
		probe_ent->port[0].scr_addr = ULI5287_BASE;
		probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
       		probe_ent->n_ports = 4;

       		probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
		probe_ent->port[2].altstatus_addr =
		probe_ent->port[2].ctl_addr =
			(pci_resource_start(pdev, 1) | ATA_PCI_CTL_OFS) + 4;
		probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
		probe_ent->port[2].scr_addr = ULI5287_BASE + ULI5287_OFFS*4;

		probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
		probe_ent->port[3].altstatus_addr =
		probe_ent->port[3].ctl_addr =
			(pci_resource_start(pdev, 3) | ATA_PCI_CTL_OFS) + 4;
		probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
		probe_ent->port[3].scr_addr = ULI5287_BASE + ULI5287_OFFS*5;

		ata_std_ports(&probe_ent->port[2]);
		ata_std_ports(&probe_ent->port[3]);
		break;

	case uli_5289:
		probe_ent->port[0].scr_addr = ULI5287_BASE;
		probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
		break;

	case uli_5281:
		probe_ent->port[0].scr_addr = ULI5281_BASE;
		probe_ent->port[1].scr_addr = ULI5281_BASE + ULI5281_OFFS;
		break;

	default:
		BUG();
		break;
	}

	pci_set_master(pdev);
	pci_enable_intx(pdev);

	/* FIXME: check ata_device_add return value */
	ata_device_add(probe_ent);
	kfree(probe_ent);

	return 0;

err_out_regions:
	pci_release_regions(pdev);

err_out:
	if (!pci_dev_busy)
		pci_disable_device(pdev);
	return rc;

}

static int __init uli_init(void)
{
	return pci_module_init(&uli_pci_driver);
}

static void __exit uli_exit(void)
{
	pci_unregister_driver(&uli_pci_driver);
}


module_init(uli_init);
module_exit(uli_exit);
Commit	Line	Data
1da177e4 LT	1	/*
	2	* sata_uli.c - ULi Electronics SATA
	3	*
af36d7f0 JG	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2, or (at your option)
	8	* any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; see the file COPYING. If not, write to
	17	* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
	18	*
	19	*
	20	* libata documentation is available via 'make {ps\|pdf}docs',
	21	* as Documentation/DocBook/libata.*
	22	*
	23	* Hardware documentation available under NDA.
1da177e4 LT	24	*
	25	*/
	26
	27	#include <linux/config.h>
	28	#include <linux/kernel.h>
	29	#include <linux/module.h>
	30	#include <linux/pci.h>
	31	#include <linux/init.h>
	32	#include <linux/blkdev.h>
	33	#include <linux/delay.h>
	34	#include <linux/interrupt.h>
	35	#include "scsi.h"
	36	#include <scsi/scsi_host.h>
	37	#include <linux/libata.h>
	38
	39	#define DRV_NAME "sata_uli"
	40	#define DRV_VERSION "0.5"
	41
	42	enum {
	43	uli_5289 = 0,
	44	uli_5287 = 1,
	45	uli_5281 = 2,
	46
	47	/* PCI configuration registers */
	48	ULI5287_BASE = 0x90, /* sata0 phy SCR registers */
	49	ULI5287_OFFS = 0x10, /* offset from sata0->sata1 phy regs */
	50	ULI5281_BASE = 0x60, /* sata0 phy SCR registers */
	51	ULI5281_OFFS = 0x60, /* offset from sata0->sata1 phy regs */
	52	};
	53
	54	static int uli_init_one (struct pci_dev pdev, const struct pci_device_id ent);
	55	static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg);
	56	static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val);
	57
	58	static struct pci_device_id uli_pci_tbl[] = {
	59	{ PCI_VENDOR_ID_AL, 0x5289, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5289 },
	60	{ PCI_VENDOR_ID_AL, 0x5287, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5287 },
	61	{ PCI_VENDOR_ID_AL, 0x5281, PCI_ANY_ID, PCI_ANY_ID, 0, 0, uli_5281 },
	62	{ } /* terminate list */
	63	};
	64
	65
	66	static struct pci_driver uli_pci_driver = {
	67	.name = DRV_NAME,
	68	.id_table = uli_pci_tbl,
	69	.probe = uli_init_one,
	70	.remove = ata_pci_remove_one,
	71	};
	72
	73	static Scsi_Host_Template uli_sht = {
	74	.module = THIS_MODULE,
	75	.name = DRV_NAME,
	76	.ioctl = ata_scsi_ioctl,
	77	.queuecommand = ata_scsi_queuecmd,
	78	.eh_strategy_handler = ata_scsi_error,
	79	.can_queue = ATA_DEF_QUEUE,
	80	.this_id = ATA_SHT_THIS_ID,
	81	.sg_tablesize = LIBATA_MAX_PRD,
	82	.max_sectors = ATA_MAX_SECTORS,
	83	.cmd_per_lun = ATA_SHT_CMD_PER_LUN,
	84	.emulated = ATA_SHT_EMULATED,
	85	.use_clustering = ATA_SHT_USE_CLUSTERING,
	86	.proc_name = DRV_NAME,
	87	.dma_boundary = ATA_DMA_BOUNDARY,
88	.slave_configure = ata_scsi_slave_config,
89	.bios_param = ata_std_bios_param,
90	.ordered_flush = 1,
91	};
92
93	static struct ata_port_operations uli_ops = {
94	.port_disable = ata_port_disable,
95
96	.tf_load = ata_tf_load,
97	.tf_read = ata_tf_read,
98	.check_status = ata_check_status,
99	.exec_command = ata_exec_command,
100	.dev_select = ata_std_dev_select,
101
102	.phy_reset = sata_phy_reset,
103
104	.bmdma_setup = ata_bmdma_setup,
105	.bmdma_start = ata_bmdma_start,
106	.bmdma_stop = ata_bmdma_stop,
107	.bmdma_status = ata_bmdma_status,
108	.qc_prep = ata_qc_prep,
109	.qc_issue = ata_qc_issue_prot,
110
111	.eng_timeout = ata_eng_timeout,
112
113	.irq_handler = ata_interrupt,
114	.irq_clear = ata_bmdma_irq_clear,
115
116	.scr_read = uli_scr_read,
117	.scr_write = uli_scr_write,
118
119	.port_start = ata_port_start,
120	.port_stop = ata_port_stop,
aa8f0dc6	121	.host_stop = ata_host_stop,
1da177e4 LT	122	};
	123
	124	static struct ata_port_info uli_port_info = {
	125	.sht = &uli_sht,
	126	.host_flags = ATA_FLAG_SATA \| ATA_FLAG_SATA_RESET \|
	127	ATA_FLAG_NO_LEGACY,
7da79312 BR	128	.pio_mask = 0x1f, /* pio0-4 */
7da79312 BR	129	.udma_mask = 0x7f, /* udma0-6 */
1da177e4 LT	130	.port_ops = &uli_ops,
	131	};
	132
	133
	134	MODULE_AUTHOR("Peer Chen");
	135	MODULE_DESCRIPTION("low-level driver for ULi Electronics SATA controller");
	136	MODULE_LICENSE("GPL");
	137	MODULE_DEVICE_TABLE(pci, uli_pci_tbl);
	138	MODULE_VERSION(DRV_VERSION);
	139
	140	static unsigned int get_scr_cfg_addr(struct ata_port *ap, unsigned int sc_reg)
	141	{
	142	return ap->ioaddr.scr_addr + (4 * sc_reg);
	143	}
	144
	145	static u32 uli_scr_cfg_read (struct ata_port *ap, unsigned int sc_reg)
	146	{
	147	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
	148	unsigned int cfg_addr = get_scr_cfg_addr(ap, sc_reg);
	149	u32 val;
	150
	151	pci_read_config_dword(pdev, cfg_addr, &val);
	152	return val;
	153	}
	154
	155	static void uli_scr_cfg_write (struct ata_port *ap, unsigned int scr, u32 val)
	156	{
	157	struct pci_dev *pdev = to_pci_dev(ap->host_set->dev);
	158	unsigned int cfg_addr = get_scr_cfg_addr(ap, scr);
	159
	160	pci_write_config_dword(pdev, cfg_addr, val);
	161	}
	162
	163	static u32 uli_scr_read (struct ata_port *ap, unsigned int sc_reg)
	164	{
	165	if (sc_reg > SCR_CONTROL)
	166	return 0xffffffffU;
	167
	168	return uli_scr_cfg_read(ap, sc_reg);
	169	}
	170
	171	static void uli_scr_write (struct ata_port *ap, unsigned int sc_reg, u32 val)
	172	{
	173	if (sc_reg > SCR_CONTROL) //SCR_CONTROL=2, SCR_ERROR=1, SCR_STATUS=0
	174	return;
	175
	176	uli_scr_cfg_write(ap, sc_reg, val);
	177	}
	178
	179	/* move to PCI layer, integrate w/ MSI stuff */
	180	static void pci_enable_intx(struct pci_dev *pdev)
	181	{
	182	u16 pci_command;
	183
	184	pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
	185	if (pci_command & PCI_COMMAND_INTX_DISABLE) {
	186	pci_command &= ~PCI_COMMAND_INTX_DISABLE;
	187	pci_write_config_word(pdev, PCI_COMMAND, pci_command);
	188	}
	189	}
	190
	191	static int uli_init_one (struct pci_dev pdev, const struct pci_device_id ent)
	192	{
	193	struct ata_probe_ent *probe_ent;
194	struct ata_port_info *ppi;
195	int rc;
196	unsigned int board_idx = (unsigned int) ent->driver_data;
197	int pci_dev_busy = 0;
198
199	rc = pci_enable_device(pdev);
200	if (rc)
201	return rc;
202
203	rc = pci_request_regions(pdev, DRV_NAME);
204	if (rc) {
205	pci_dev_busy = 1;
206	goto err_out;
207	}
208
209	rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
210	if (rc)
211	goto err_out_regions;
212	rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
213	if (rc)
214	goto err_out_regions;
215
216	ppi = &uli_port_info;
217	probe_ent = ata_pci_init_native_mode(pdev, &ppi);
218	if (!probe_ent) {
219	rc = -ENOMEM;
220	goto err_out_regions;
221	}
8a60a071	222
1da177e4 LT	223	switch (board_idx) {
	224	case uli_5287:
	225	probe_ent->port[0].scr_addr = ULI5287_BASE;
	226	probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
	227	probe_ent->n_ports = 4;
	228
	229	probe_ent->port[2].cmd_addr = pci_resource_start(pdev, 0) + 8;
	230	probe_ent->port[2].altstatus_addr =
	231	probe_ent->port[2].ctl_addr =
	232	(pci_resource_start(pdev, 1) \| ATA_PCI_CTL_OFS) + 4;
	233	probe_ent->port[2].bmdma_addr = pci_resource_start(pdev, 4) + 16;
	234	probe_ent->port[2].scr_addr = ULI5287_BASE + ULI5287_OFFS*4;
	235
	236	probe_ent->port[3].cmd_addr = pci_resource_start(pdev, 2) + 8;
	237	probe_ent->port[3].altstatus_addr =
	238	probe_ent->port[3].ctl_addr =
	239	(pci_resource_start(pdev, 3) \| ATA_PCI_CTL_OFS) + 4;
	240	probe_ent->port[3].bmdma_addr = pci_resource_start(pdev, 4) + 24;
	241	probe_ent->port[3].scr_addr = ULI5287_BASE + ULI5287_OFFS*5;
	242
	243	ata_std_ports(&probe_ent->port[2]);
	244	ata_std_ports(&probe_ent->port[3]);
	245	break;
	246
	247	case uli_5289:
	248	probe_ent->port[0].scr_addr = ULI5287_BASE;
	249	probe_ent->port[1].scr_addr = ULI5287_BASE + ULI5287_OFFS;
	250	break;
	251
	252	case uli_5281:
	253	probe_ent->port[0].scr_addr = ULI5281_BASE;
	254	probe_ent->port[1].scr_addr = ULI5281_BASE + ULI5281_OFFS;
	255	break;
	256
	257	default:
	258	BUG();
	259	break;
	260	}
	261
	262	pci_set_master(pdev);
	263	pci_enable_intx(pdev);
	264
	265	/* FIXME: check ata_device_add return value */
	266	ata_device_add(probe_ent);
	267	kfree(probe_ent);
	268
	269	return 0;
	270
	271	err_out_regions:
	272	pci_release_regions(pdev);
	273
	274	err_out:
	275	if (!pci_dev_busy)
	276	pci_disable_device(pdev);
	277	return rc;
	278
	279	}
	280
	281	static int __init uli_init(void)
	282	{
	283	return pci_module_init(&uli_pci_driver);
	284	}
	285
	286	static void __exit uli_exit(void)
287	{
288	pci_unregister_driver(&uli_pci_driver);
289	}
290
291
292	module_init(uli_init);
293	module_exit(uli_exit);