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
netcell_read_id(struct ata_device * adev,struct ata_taskfile * tf,u16 * id)23 static 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
33 static struct scsi_host_template netcell_sht = {
34 ATA_BMDMA_SHT(DRV_NAME),
35 };
36
37 static 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
netcell_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)58 static 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
85 static const struct pci_device_id netcell_pci_tbl[] = {
86 { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
87
88 { } /* terminate list */
89 };
90
91 static 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
102 module_pci_driver(netcell_pci_driver);
103
104 MODULE_AUTHOR("Alan Cox");
105 MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
106 MODULE_LICENSE("GPL");
107 MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
108 MODULE_VERSION(DRV_VERSION);
109