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, __le16 *id)
25{
26	unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);
27
28	/* Firmware forgets to mark words 85-87 valid */
29	if (err_mask == 0)
30		id[ATA_ID_CSF_DEFAULT] |= cpu_to_le16(0x4000);
31	return err_mask;
32}
33
34static const struct scsi_host_template netcell_sht = {
35	ATA_BMDMA_SHT(DRV_NAME),
36};
37
38static struct ata_port_operations netcell_ops = {
39	.inherits	= &ata_bmdma_port_ops,
40	.cable_detect	= ata_cable_80wire,
41	.read_id	= netcell_read_id,
42};
43
44
45/**
46 *	netcell_init_one - Register Netcell ATA PCI device with kernel services
47 *	@pdev: PCI device to register
48 *	@ent: Entry in netcell_pci_tbl matching with @pdev
49 *
50 *	Called from kernel PCI layer.
51 *
52 *	LOCKING:
53 *	Inherited from PCI layer (may sleep).
54 *
55 *	RETURNS:
56 *	Zero on success, or -ERRNO value.
57 */
58
59static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
60{
61	static const struct ata_port_info info = {
62		.flags		= ATA_FLAG_SLAVE_POSS,
63		/* Actually we don't really care about these as the
64		   firmware deals with it */
65		.pio_mask	= ATA_PIO4,
66		.mwdma_mask	= ATA_MWDMA2,
67		.udma_mask 	= ATA_UDMA5, /* UDMA 133 */
68		.port_ops	= &netcell_ops,
69	};
70	const struct ata_port_info *port_info[] = { &info, NULL };
71	int rc;
72
73	ata_print_version_once(&pdev->dev, DRV_VERSION);
74
75	rc = pcim_enable_device(pdev);
76	if (rc)
77		return rc;
78
79	/* Any chip specific setup/optimisation/messages here */
80	ata_pci_bmdma_clear_simplex(pdev);
81
82	/* And let the library code do the work */
83	return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
84}
85
86static const struct pci_device_id netcell_pci_tbl[] = {
87	{ PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
88
89	{ }	/* terminate list */
90};
91
92static struct pci_driver netcell_pci_driver = {
93	.name			= DRV_NAME,
94	.id_table		= netcell_pci_tbl,
95	.probe			= netcell_init_one,
96	.remove			= ata_pci_remove_one,
97#ifdef CONFIG_PM_SLEEP
98	.suspend		= ata_pci_device_suspend,
99	.resume			= ata_pci_device_resume,
100#endif
101};
102
103module_pci_driver(netcell_pci_driver);
104
105MODULE_AUTHOR("Alan Cox");
106MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
107MODULE_LICENSE("GPL");
108MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
109MODULE_VERSION(DRV_VERSION);
110