^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Provides ACPI support for IDE drives.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2005 Intel Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) 2005 Randy Dunlap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2006 SUSE Linux Products GmbH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2006 Hannes Reinecke
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/ata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/ide.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/pci.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/dmi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define REGS_PER_GTF 7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct GTM_buffer {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) u32 PIO_speed0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) u32 DMA_speed0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) u32 PIO_speed1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) u32 DMA_speed1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) u32 GTM_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct ide_acpi_drive_link {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) acpi_handle obj_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) u8 idbuff[512];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) struct ide_acpi_hwif_link {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) ide_hwif_t *hwif;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) acpi_handle obj_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct GTM_buffer gtm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct ide_acpi_drive_link master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) struct ide_acpi_drive_link slave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #undef DEBUGGING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /* note: adds function name and KERN_DEBUG */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #ifdef DEBUGGING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define DEBPRINT(fmt, args...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) printk(KERN_DEBUG "%s: " fmt, __func__, ## args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define DEBPRINT(fmt, args...) do {} while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #endif /* DEBUGGING */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static bool ide_noacpi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) module_param_named(noacpi, ide_noacpi, bool, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) MODULE_PARM_DESC(noacpi, "disable IDE ACPI support");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static bool ide_acpigtf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) module_param_named(acpigtf, ide_acpigtf, bool, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) MODULE_PARM_DESC(acpigtf, "enable IDE ACPI _GTF support");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static bool ide_acpionboot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) module_param_named(acpionboot, ide_acpionboot, bool, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) MODULE_PARM_DESC(acpionboot, "call IDE ACPI methods on boot");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static bool ide_noacpi_psx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static int no_acpi_psx(const struct dmi_system_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) ide_noacpi_psx = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) printk(KERN_NOTICE"%s detected - disable ACPI _PSx.\n", id->ident);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static const struct dmi_system_id ide_acpi_dmi_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) /* Bug 9673. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /* We should check if this is because ACPI NVS isn't save/restored. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) .callback = no_acpi_psx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) .ident = "HP nx9005",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) .matches = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies Ltd."),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) DMI_MATCH(DMI_BIOS_VERSION, "KAM1.60")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) { } /* terminate list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) int ide_acpi_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) dmi_check_system(ide_acpi_dmi_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) bool ide_port_acpi(ide_hwif_t *hwif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return ide_noacpi == 0 && hwif->acpidata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) static acpi_handle acpi_get_child(acpi_handle handle, u64 addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) struct acpi_device *adev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (!handle || acpi_bus_get_device(handle, &adev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) adev = acpi_find_child_device(adev, addr, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) return adev ? adev->handle : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) * ide_get_dev_handle - finds acpi_handle and PCI device.function
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) * @dev: device to locate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) * @handle: returned acpi_handle for @dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * @pcidevfn: return PCI device.func for @dev
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * Returns the ACPI object handle to the corresponding PCI device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * Returns 0 on success, <0 on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) static int ide_get_dev_handle(struct device *dev, acpi_handle *handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) u64 *pcidevfn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) struct pci_dev *pdev = to_pci_dev(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) unsigned int bus, devnum, func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) u64 addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) acpi_handle dev_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) struct acpi_device_info *dinfo = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) int ret = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) bus = pdev->bus->number;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) devnum = PCI_SLOT(pdev->devfn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) func = PCI_FUNC(pdev->devfn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /* ACPI _ADR encoding for PCI bus: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) addr = (u64)(devnum << 16 | func);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) DEBPRINT("ENTER: pci %02x:%02x.%01x\n", bus, devnum, func);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) dev_handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (!dev_handle) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) DEBPRINT("no acpi handle for device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) status = acpi_get_object_info(dev_handle, &dinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) DEBPRINT("get_object_info for device failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (dinfo && (dinfo->valid & ACPI_VALID_ADR) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) dinfo->address == addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) *pcidevfn = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) *handle = dev_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) DEBPRINT("get_object_info for device has wrong "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) " address: %llu, should be %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) dinfo ? (unsigned long long)dinfo->address : -1ULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) (unsigned int)addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) DEBPRINT("for dev=0x%x.%x, addr=0x%llx, *handle=0x%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) devnum, func, (unsigned long long)addr, *handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) kfree(dinfo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) * ide_acpi_hwif_get_handle - Get ACPI object handle for a given hwif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * @hwif: device to locate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * Retrieves the object handle for a given hwif.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * Returns handle on success, 0 on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static acpi_handle ide_acpi_hwif_get_handle(ide_hwif_t *hwif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) struct device *dev = hwif->gendev.parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) acpi_handle dev_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) u64 pcidevfn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) acpi_handle chan_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) DEBPRINT("ENTER: device %s\n", hwif->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (!dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) DEBPRINT("no PCI device for %s\n", hwif->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) err = ide_get_dev_handle(dev, &dev_handle, &pcidevfn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) DEBPRINT("ide_get_dev_handle failed (%d)\n", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /* get child objects of dev_handle == channel objects,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) * + _their_ children == drive objects */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /* channel is hwif->channel */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) chan_handle = acpi_get_child(dev_handle, hwif->channel);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) DEBPRINT("chan adr=%d: handle=0x%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) hwif->channel, chan_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return chan_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) * do_drive_get_GTF - get the drive bootup default taskfile settings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) * @drive: the drive for which the taskfile settings should be retrieved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) * @gtf_length: number of bytes of _GTF data returned at @gtf_address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) * @gtf_address: buffer containing _GTF taskfile arrays
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) * The _GTF method has no input parameters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) * It returns a variable number of register set values (registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) * hex 1F1..1F7, taskfiles).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) * The <variable number> is not known in advance, so have ACPI-CA
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) * allocate the buffer as needed and return it, then free it later.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) * The returned @gtf_length and @gtf_address are only valid if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) * function return value is 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) static int do_drive_get_GTF(ide_drive_t *drive,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) unsigned int *gtf_length, unsigned long *gtf_address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) unsigned long *obj_loc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) struct acpi_buffer output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) union acpi_object *out_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) int err = -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) *gtf_length = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) *gtf_address = 0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) *obj_loc = 0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) if (!drive->acpidata->obj_handle) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) DEBPRINT("No ACPI object found for %s\n", drive->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) /* Setting up output buffer */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) output.length = ACPI_ALLOCATE_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) output.pointer = NULL; /* ACPI-CA sets this; save/free it later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) /* _GTF has no input parameters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) err = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) status = acpi_evaluate_object(drive->acpidata->obj_handle, "_GTF",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) NULL, &output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) printk(KERN_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) "%s: Run _GTF error: status = 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) __func__, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) if (!output.length || !output.pointer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) DEBPRINT("Run _GTF: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) "length or ptr is NULL (0x%llx, 0x%p)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) (unsigned long long)output.length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) out_obj = output.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) if (out_obj->type != ACPI_TYPE_BUFFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) DEBPRINT("Run _GTF: error: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) "expected object type of ACPI_TYPE_BUFFER, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) "got 0x%x\n", out_obj->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) kfree(output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) if (!out_obj->buffer.length || !out_obj->buffer.pointer ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) out_obj->buffer.length % REGS_PER_GTF) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) printk(KERN_ERR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) "%s: unexpected GTF length (%d) or addr (0x%p)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) __func__, out_obj->buffer.length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) out_obj->buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) kfree(output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) *gtf_length = out_obj->buffer.length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) *gtf_address = (unsigned long)out_obj->buffer.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) *obj_loc = (unsigned long)out_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) DEBPRINT("returning gtf_length=%d, gtf_address=0x%lx, obj_loc=0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) *gtf_length, *gtf_address, *obj_loc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * do_drive_set_taskfiles - write the drive taskfile settings from _GTF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) * @drive: the drive to which the taskfile command should be sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) * @gtf_length: total number of bytes of _GTF taskfiles
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * @gtf_address: location of _GTF taskfile arrays
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * Write {gtf_address, length gtf_length} in groups of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * REGS_PER_GTF bytes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) static int do_drive_set_taskfiles(ide_drive_t *drive,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) unsigned int gtf_length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) unsigned long gtf_address)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) int rc = 0, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) int gtf_count = gtf_length / REGS_PER_GTF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) int ix;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) DEBPRINT("total GTF bytes=%u (0x%x), gtf_count=%d, addr=0x%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) gtf_length, gtf_length, gtf_count, gtf_address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) /* send all taskfile registers (0x1f1-0x1f7) *in*that*order* */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) for (ix = 0; ix < gtf_count; ix++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) u8 *gtf = (u8 *)(gtf_address + ix * REGS_PER_GTF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct ide_cmd cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) DEBPRINT("(0x1f1-1f7): "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) "hex: %02x %02x %02x %02x %02x %02x %02x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) gtf[0], gtf[1], gtf[2],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) gtf[3], gtf[4], gtf[5], gtf[6]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) if (!ide_acpigtf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) DEBPRINT("_GTF execution disabled\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) /* convert GTF to taskfile */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) memset(&cmd, 0, sizeof(cmd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) memcpy(&cmd.tf.feature, gtf, REGS_PER_GTF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) cmd.valid.in.tf = IDE_VALID_IN_TF | IDE_VALID_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) err = ide_no_data_taskfile(drive, &cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) printk(KERN_ERR "%s: ide_no_data_taskfile failed: %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) __func__, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) rc = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) * ide_acpi_exec_tfs - get then write drive taskfile settings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) * @drive: the drive for which the taskfile settings should be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) * written.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * According to the ACPI spec this should be called after _STM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) * has been evaluated for the interface. Some ACPI vendors interpret
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) * that as a hard requirement and modify the taskfile according
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * to the Identify Drive information passed down with _STM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) * So one should really make sure to call this only after _STM has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) * been executed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) int ide_acpi_exec_tfs(ide_drive_t *drive)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) unsigned int gtf_length;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) unsigned long gtf_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) unsigned long obj_loc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) DEBPRINT("call get_GTF, drive=%s port=%d\n", drive->name, drive->dn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) ret = do_drive_get_GTF(drive, >f_length, >f_address, &obj_loc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) DEBPRINT("get_GTF error (%d)\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) DEBPRINT("call set_taskfiles, drive=%s\n", drive->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) ret = do_drive_set_taskfiles(drive, gtf_length, gtf_address);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) kfree((void *)obj_loc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) DEBPRINT("set_taskfiles error (%d)\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) DEBPRINT("ret=%d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) * ide_acpi_get_timing - get the channel (controller) timings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * @hwif: target IDE interface (channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * This function executes the _GTM ACPI method for the target channel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) void ide_acpi_get_timing(ide_hwif_t *hwif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) struct acpi_buffer output;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) union acpi_object *out_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) /* Setting up output buffer for _GTM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) output.length = ACPI_ALLOCATE_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) output.pointer = NULL; /* ACPI-CA sets this; save/free it later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) /* _GTM has no input parameters */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) status = acpi_evaluate_object(hwif->acpidata->obj_handle, "_GTM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) NULL, &output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) DEBPRINT("_GTM status: %d, outptr: 0x%p, outlen: 0x%llx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) status, output.pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) (unsigned long long)output.length);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) DEBPRINT("Run _GTM error: status = 0x%x\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (!output.length || !output.pointer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) DEBPRINT("Run _GTM: length or ptr is NULL (0x%llx, 0x%p)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) (unsigned long long)output.length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) kfree(output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) out_obj = output.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) if (out_obj->type != ACPI_TYPE_BUFFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) DEBPRINT("Run _GTM: error: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) "expected object type of ACPI_TYPE_BUFFER, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) "got 0x%x\n", out_obj->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) kfree(output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (!out_obj->buffer.length || !out_obj->buffer.pointer ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) out_obj->buffer.length != sizeof(struct GTM_buffer)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) printk(KERN_ERR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) "%s: unexpected _GTM length (0x%x)[should be 0x%zx] or "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) "addr (0x%p)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) __func__, out_obj->buffer.length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) sizeof(struct GTM_buffer), out_obj->buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) kfree(output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) memcpy(&hwif->acpidata->gtm, out_obj->buffer.pointer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) sizeof(struct GTM_buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) DEBPRINT("_GTM info: ptr: 0x%p, len: 0x%x, exp.len: 0x%zx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) out_obj->buffer.pointer, out_obj->buffer.length,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) sizeof(struct GTM_buffer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) DEBPRINT("_GTM fields: 0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) hwif->acpidata->gtm.PIO_speed0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) hwif->acpidata->gtm.DMA_speed0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) hwif->acpidata->gtm.PIO_speed1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) hwif->acpidata->gtm.DMA_speed1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) hwif->acpidata->gtm.GTM_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) kfree(output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) * ide_acpi_push_timing - set the channel (controller) timings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) * @hwif: target IDE interface (channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) * This function executes the _STM ACPI method for the target channel.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) * _STM requires Identify Drive data, which has to passed as an argument.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * Unfortunately drive->id is a mangled version which we can't readily
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * use; hence we'll get the information afresh.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) void ide_acpi_push_timing(ide_hwif_t *hwif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) struct acpi_object_list input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) union acpi_object in_params[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) struct ide_acpi_drive_link *master = &hwif->acpidata->master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) struct ide_acpi_drive_link *slave = &hwif->acpidata->slave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) /* Give the GTM buffer + drive Identify data to the channel via the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) * _STM method: */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) /* setup input parameters buffer for _STM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) input.count = 3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) input.pointer = in_params;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) in_params[0].type = ACPI_TYPE_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) in_params[0].buffer.length = sizeof(struct GTM_buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) in_params[0].buffer.pointer = (u8 *)&hwif->acpidata->gtm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) in_params[1].type = ACPI_TYPE_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) in_params[1].buffer.length = ATA_ID_WORDS * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) in_params[1].buffer.pointer = (u8 *)&master->idbuff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) in_params[2].type = ACPI_TYPE_BUFFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) in_params[2].buffer.length = ATA_ID_WORDS * 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) in_params[2].buffer.pointer = (u8 *)&slave->idbuff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) /* Output buffer: _STM has no output */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) status = acpi_evaluate_object(hwif->acpidata->obj_handle, "_STM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) &input, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) DEBPRINT("Run _STM error: status = 0x%x\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) DEBPRINT("_STM status: %d\n", status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) * ide_acpi_set_state - set the channel power state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) * @hwif: target IDE interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) * @on: state, on/off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) * This function executes the _PS0/_PS3 ACPI method to set the power state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) * ACPI spec requires _PS0 when IDE power on and _PS3 when power off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) void ide_acpi_set_state(ide_hwif_t *hwif, int on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) ide_drive_t *drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (ide_noacpi_psx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) DEBPRINT("ENTER:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) /* channel first and then drives for power on and verse versa for power off */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) if (on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) ide_port_for_each_present_dev(i, drive, hwif) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) if (drive->acpidata->obj_handle)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) acpi_bus_set_power(drive->acpidata->obj_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) on ? ACPI_STATE_D0 : ACPI_STATE_D3_COLD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (!on)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) acpi_bus_set_power(hwif->acpidata->obj_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) ACPI_STATE_D3_COLD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) * ide_acpi_init_port - initialize the ACPI link for an IDE interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) * @hwif: target IDE interface (channel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * The ACPI spec is not quite clear when the drive identify buffer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) * should be obtained. Calling IDENTIFY DEVICE during shutdown
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) * is not the best of ideas as the drive might already being put to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * sleep. And obviously we can't call it during resume.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * So we get the information during startup; but this means that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) * any changes during run-time will be lost after resume.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) void ide_acpi_init_port(ide_hwif_t *hwif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) hwif->acpidata = kzalloc(sizeof(struct ide_acpi_hwif_link), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if (!hwif->acpidata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) hwif->acpidata->obj_handle = ide_acpi_hwif_get_handle(hwif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) if (!hwif->acpidata->obj_handle) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) DEBPRINT("no ACPI object for %s found\n", hwif->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) kfree(hwif->acpidata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) hwif->acpidata = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) void ide_acpi_port_init_devices(ide_hwif_t *hwif)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) ide_drive_t *drive;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) int i, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) if (hwif->acpidata == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) * The ACPI spec mandates that we send information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) * for both drives, regardless whether they are connected
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) * or not.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) hwif->devices[0]->acpidata = &hwif->acpidata->master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) hwif->devices[1]->acpidata = &hwif->acpidata->slave;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) /* get _ADR info for each device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) ide_port_for_each_present_dev(i, drive, hwif) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) acpi_handle dev_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) DEBPRINT("ENTER: %s at channel#: %d port#: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) drive->name, hwif->channel, drive->dn & 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) /* TBD: could also check ACPI object VALID bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) dev_handle = acpi_get_child(hwif->acpidata->obj_handle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) drive->dn & 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) DEBPRINT("drive %s handle 0x%p\n", drive->name, dev_handle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) drive->acpidata->obj_handle = dev_handle;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) /* send IDENTIFY for each device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) ide_port_for_each_present_dev(i, drive, hwif) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) err = taskfile_lib_get_identify(drive, drive->acpidata->idbuff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) DEBPRINT("identify device %s failed (%d)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) drive->name, err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) if (ide_noacpi || ide_acpionboot == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) DEBPRINT("ACPI methods disabled on boot\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) /* ACPI _PS0 before _STM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) ide_acpi_set_state(hwif, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) * ACPI requires us to call _STM on startup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) ide_acpi_get_timing(hwif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) ide_acpi_push_timing(hwif);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) ide_port_for_each_present_dev(i, drive, hwif) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) ide_acpi_exec_tfs(drive);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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