// SPDX-License-Identifier: GPL-2.0-or-later /* * sata_sil.c - Silicon Image SATA * * Maintained by: Tejun Heo <[email protected]> * Please ALWAYS copy [email protected] * on emails. * * Copyright 2003-2005 Red Hat, Inc. * Copyright 2003 Benjamin Herrenschmidt * * libata documentation is available via 'make {ps|pdf}docs', * as Documentation/driver-api/libata.rst * * Documentation for SiI 3112: * http://gkernel.sourceforge.net/specs/sii/3112A_SiI-DS-0095-B2.pdf.bz2 * * Other errata and documentation available under NDA. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/blkdev.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/device.h> #include <scsi/scsi_host.h> #include <linux/libata.h> #include <linux/dmi.h> #define DRV_NAME … #define DRV_VERSION … #define SIL_DMA_BOUNDARY … enum { … }; static int sil_init_one(struct pci_dev *pdev, const struct pci_device_id *ent); #ifdef CONFIG_PM_SLEEP static int sil_pci_device_resume(struct pci_dev *pdev); #endif static void sil_dev_config(struct ata_device *dev); static int sil_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val); static int sil_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val); static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed); static enum ata_completion_errors sil_qc_prep(struct ata_queued_cmd *qc); static void sil_bmdma_setup(struct ata_queued_cmd *qc); static void sil_bmdma_start(struct ata_queued_cmd *qc); static void sil_bmdma_stop(struct ata_queued_cmd *qc); static void sil_freeze(struct ata_port *ap); static void sil_thaw(struct ata_port *ap); static const struct pci_device_id sil_pci_tbl[] = …; /* TODO firmware versions should be added - eric */ static const struct sil_drivelist { … } sil_blacklist [] = …; static struct pci_driver sil_pci_driver = …; static const struct scsi_host_template sil_sht = …; static struct ata_port_operations sil_ops = …; static const struct ata_port_info sil_port_info[] = …; /* per-port register offsets */ /* TODO: we can probably calculate rather than use a table */ static const struct { … } sil_port[] = …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_DEVICE_TABLE(pci, sil_pci_tbl); MODULE_VERSION(…); static int slow_down; module_param(slow_down, int, 0444); MODULE_PARM_DESC(…) …; static void sil_bmdma_stop(struct ata_queued_cmd *qc) { … } static void sil_bmdma_setup(struct ata_queued_cmd *qc) { … } static void sil_bmdma_start(struct ata_queued_cmd *qc) { … } /* The way God intended PCI IDE scatter/gather lists to look and behave... */ static void sil_fill_sg(struct ata_queued_cmd *qc) { … } static enum ata_completion_errors sil_qc_prep(struct ata_queued_cmd *qc) { … } static unsigned char sil_get_device_cache_line(struct pci_dev *pdev) { … } /** * sil_set_mode - wrap set_mode functions * @link: link to set up * @r_failed: returned device when we fail * * Wrap the libata method for device setup as after the setup we need * to inspect the results and do some configuration work */ static int sil_set_mode(struct ata_link *link, struct ata_device **r_failed) { … } static inline void __iomem *sil_scr_addr(struct ata_port *ap, unsigned int sc_reg) { … } static int sil_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val) { … } static int sil_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val) { … } static void sil_host_intr(struct ata_port *ap, u32 bmdma2) { … } static irqreturn_t sil_interrupt(int irq, void *dev_instance) { … } static void sil_freeze(struct ata_port *ap) { … } static void sil_thaw(struct ata_port *ap) { … } /** * sil_dev_config - Apply device/host-specific errata fixups * @dev: Device to be examined * * After the IDENTIFY [PACKET] DEVICE step is complete, and a * device is known to be present, this function is called. * We apply two errata fixups which are specific to Silicon Image, * a Seagate and a Maxtor fixup. * * For certain Seagate devices, we must limit the maximum sectors * to under 8K. * * For certain Maxtor devices, we must not program the drive * beyond udma5. * * Both fixups are unfairly pessimistic. As soon as I get more * information on these errata, I will create a more exhaustive * list, and apply the fixups to only the specific * devices/hosts/firmwares that need it. * * 20040111 - Seagate drives affected by the Mod15Write bug are blacklisted * The Maxtor quirk is in the blacklist, but I'm keeping the original * pessimistic fix for the following reasons... * - There seems to be less info on it, only one device gleaned off the * Windows driver, maybe only one is affected. More info would be greatly * appreciated. * - But then again UDMA5 is hardly anything to complain about */ static void sil_dev_config(struct ata_device *dev) { … } static void sil_init_controller(struct ata_host *host) { … } static bool sil_broken_system_poweroff(struct pci_dev *pdev) { … } static int sil_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) { … } #ifdef CONFIG_PM_SLEEP static int sil_pci_device_resume(struct pci_dev *pdev) { … } #endif module_pci_driver(…) …;
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