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,__le16 * id)23 static 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
34 static const struct scsi_host_template netcell_sht = {
35 ATA_BMDMA_SHT(DRV_NAME),
36 };
37
38 static 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
netcell_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)59 static 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
86 static const struct pci_device_id netcell_pci_tbl[] = {
87 { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
88
89 { } /* terminate list */
90 };
91
92 static 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
103 module_pci_driver(netcell_pci_driver);
104
105 MODULE_AUTHOR("Alan Cox");
106 MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
107 MODULE_LICENSE("GPL");
108 MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
109 MODULE_VERSION(DRV_VERSION);
110