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 | |
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(dev: 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 | |
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, ppi: port_info, sht: &netcell_sht, NULL, hflags: 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 | |