1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 *    pata_netcell.c - Netcell PATA driver
4 *
5 *	(c) 2006 Red Hat
6 */
7
8#include <linux/kernel.h>
9#include <linux/module.h>
10#include <linux/pci.h>
11#include <linux/blkdev.h>
12#include <linux/delay.h>
13#include <linux/device.h>
14#include <scsi/scsi_host.h>
15#include <linux/libata.h>
16#include <linux/ata.h>
17
18#define DRV_NAME	"pata_netcell"
19#define DRV_VERSION	"0.1.7"
20
21/* No PIO or DMA methods needed for this device */
22
23static unsigned int netcell_read_id(struct ata_device *adev,
24					struct ata_taskfile *tf, u16 *id)
25{
26	unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);
27	/* Firmware forgets to mark words 85-87 valid */
28	if (err_mask == 0)
29		id[ATA_ID_CSF_DEFAULT] |= 0x4000;
30	return err_mask;
31}
32
33static struct scsi_host_template netcell_sht = {
34	ATA_BMDMA_SHT(DRV_NAME),
35};
36
37static struct ata_port_operations netcell_ops = {
38	.inherits	= &ata_bmdma_port_ops,
39	.cable_detect	= ata_cable_80wire,
40	.read_id	= netcell_read_id,
41};
42
43
44/**
45 *	netcell_init_one - Register Netcell ATA PCI device with kernel services
46 *	@pdev: PCI device to register
47 *	@ent: Entry in netcell_pci_tbl matching with @pdev
48 *
49 *	Called from kernel PCI layer.
50 *
51 *	LOCKING:
52 *	Inherited from PCI layer (may sleep).
53 *
54 *	RETURNS:
55 *	Zero on success, or -ERRNO value.
56 */
57
58static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
59{
60	static const struct ata_port_info info = {
61		.flags		= ATA_FLAG_SLAVE_POSS,
62		/* Actually we don't really care about these as the
63		   firmware deals with it */
64		.pio_mask	= ATA_PIO4,
65		.mwdma_mask	= ATA_MWDMA2,
66		.udma_mask 	= ATA_UDMA5, /* UDMA 133 */
67		.port_ops	= &netcell_ops,
68	};
69	const struct ata_port_info *port_info[] = { &info, NULL };
70	int rc;
71
72	ata_print_version_once(&pdev->dev, DRV_VERSION);
73
74	rc = pcim_enable_device(pdev);
75	if (rc)
76		return rc;
77
78	/* Any chip specific setup/optimisation/messages here */
79	ata_pci_bmdma_clear_simplex(pdev);
80
81	/* And let the library code do the work */
82	return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
83}
84
85static const struct pci_device_id netcell_pci_tbl[] = {
86	{ PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
87
88	{ }	/* terminate list */
89};
90
91static struct pci_driver netcell_pci_driver = {
92	.name			= DRV_NAME,
93	.id_table		= netcell_pci_tbl,
94	.probe			= netcell_init_one,
95	.remove			= ata_pci_remove_one,
96#ifdef CONFIG_PM_SLEEP
97	.suspend		= ata_pci_device_suspend,
98	.resume			= ata_pci_device_resume,
99#endif
100};
101
102module_pci_driver(netcell_pci_driver);
103
104MODULE_AUTHOR("Alan Cox");
105MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
106MODULE_LICENSE("GPL");
107MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
108MODULE_VERSION(DRV_VERSION);
109