cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pata_netcell.c (2717B)

      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 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);