diff options
author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-10 14:50:16 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-10 14:50:16 -0700 |
commit | 64b853aa328f34dd58e4e617cded91e2ddbcac13 (patch) | |
tree | 34b201d952bc93ead6ca91ed18dab5fb87dacf03 /drivers/ata/libata-acpi.c | |
parent | 0f166396e7e8931bb4acfd1a6ea1bd4f0b43f1dd (diff) | |
parent | c1e4fe711a410a139095e6b3e3ce3f07f466063c (diff) |
Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev: (32 commits)
[libata] sata_mv: print out additional chip info during probe
[libata] Use ATA_UDMAx standard masks when filling driver's udma_mask info
[libata] AHCI: Add support for Marvell AHCI-like chips (initially 6145)
[libata] Clean up driver udma_mask initializers
libata: Support chips with 64K PRD quirk
Add a PCI ID for santa rosa's PATA controller.
sata_sil24: sil24_interrupt() micro-optimisation
Add irq_flags to struct pata_platform_info
sata_promise: cleanups
[libata] pata_ixp4xx: kill unused var
ata_piix: fix pio/mwdma programming
[libata] ahci: minor internal cleanups
[ATA] Add named constant for ATAPI command DEVICE RESET
[libata] sata_sx4, sata_via: minor documentation updates
[libata] ahci: minor internal cleanups
[libata] ahci: Factor out SATA port init into a separate function
[libata] pata_sil680: minor cleanups from benh
[libata] sata_sx4: named constant cleanup
[libata] pata_ixp4xx: convert to new EH
[libata] pdc_adma: Reorder initializers with a couple structs
...
Diffstat (limited to 'drivers/ata/libata-acpi.c')
-rw-r--r-- | drivers/ata/libata-acpi.c | 914 |
1 files changed, 401 insertions, 513 deletions
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index 02236739b40f..c059f78ad944 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -24,15 +24,13 @@ #include <acpi/acmacros.h> #include <acpi/actypes.h> -#define SATA_ROOT_PORT(x) (((x) >> 16) & 0xffff) -#define SATA_PORT_NUMBER(x) ((x) & 0xffff) /* or NO_PORT_MULT */ #define NO_PORT_MULT 0xffff -#define SATA_ADR_RSVD 0xffffffff +#define SATA_ADR(root,pmp) (((root) << 16) | (pmp)) #define REGS_PER_GTF 7 -struct taskfile_array { - u8 tfa[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */ -}; +struct ata_acpi_gtf { + u8 tf[REGS_PER_GTF]; /* regs. 0x1f1 - 0x1f7 */ +} __packed; /* * Helper - belongs in the PCI layer somewhere eventually @@ -42,237 +40,173 @@ static int is_pci_dev(struct device *dev) return (dev->bus == &pci_bus_type); } +static void ata_acpi_associate_sata_port(struct ata_port *ap) +{ + acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT); + + ap->device->acpi_handle = acpi_get_child(ap->host->acpi_handle, adr); +} + +static void ata_acpi_associate_ide_port(struct ata_port *ap) +{ + int max_devices, i; + + ap->acpi_handle = acpi_get_child(ap->host->acpi_handle, ap->port_no); + if (!ap->acpi_handle) + return; + + max_devices = 1; + if (ap->flags & ATA_FLAG_SLAVE_POSS) + max_devices++; + + for (i = 0; i < max_devices; i++) { + struct ata_device *dev = &ap->device[i]; + + dev->acpi_handle = acpi_get_child(ap->acpi_handle, i); + } +} + /** - * sata_get_dev_handle - finds acpi_handle and PCI device.function - * @dev: device to locate - * @handle: returned acpi_handle for @dev - * @pcidevfn: return PCI device.func for @dev + * ata_acpi_associate - associate ATA host with ACPI objects + * @host: target ATA host + * + * Look up ACPI objects associated with @host and initialize + * acpi_handle fields of @host, its ports and devices accordingly. * - * This function is somewhat SATA-specific. Or at least the - * PATA & SATA versions of this function are different, - * so it's not entirely generic code. + * LOCKING: + * EH context. * - * Returns 0 on success, <0 on error. + * RETURNS: + * 0 on success, -errno on failure. */ -static int sata_get_dev_handle(struct device *dev, acpi_handle *handle, - acpi_integer *pcidevfn) +void ata_acpi_associate(struct ata_host *host) { - struct pci_dev *pci_dev; - acpi_integer addr; - - if (!is_pci_dev(dev)) - return -ENODEV; - - pci_dev = to_pci_dev(dev); /* NOTE: PCI-specific */ - /* Please refer to the ACPI spec for the syntax of _ADR. */ - addr = (PCI_SLOT(pci_dev->devfn) << 16) | PCI_FUNC(pci_dev->devfn); - *pcidevfn = addr; - *handle = acpi_get_child(DEVICE_ACPI_HANDLE(dev->parent), addr); - if (!*handle) - return -ENODEV; - return 0; + int i; + + if (!is_pci_dev(host->dev) || libata_noacpi) + return; + + host->acpi_handle = DEVICE_ACPI_HANDLE(host->dev); + if (!host->acpi_handle) + return; + + for (i = 0; i < host->n_ports; i++) { + struct ata_port *ap = host->ports[i]; + + if (host->ports[0]->flags & ATA_FLAG_ACPI_SATA) + ata_acpi_associate_sata_port(ap); + else + ata_acpi_associate_ide_port(ap); + } } /** - * pata_get_dev_handle - finds acpi_handle and PCI device.function - * @dev: device to locate - * @handle: returned acpi_handle for @dev - * @pcidevfn: return PCI device.func for @dev + * ata_acpi_gtm - execute _GTM + * @ap: target ATA port + * @gtm: out parameter for _GTM result + * + * Evaluate _GTM and store the result in @gtm. * - * The PATA and SATA versions of this function are different. + * LOCKING: + * EH context. * - * Returns 0 on success, <0 on error. + * RETURNS: + * 0 on success, -ENOENT if _GTM doesn't exist, -errno on failure. */ -static int pata_get_dev_handle(struct device *dev, acpi_handle *handle, - acpi_integer *pcidevfn) +static int ata_acpi_gtm(const struct ata_port *ap, struct ata_acpi_gtm *gtm) { - unsigned int bus, devnum, func; - acpi_integer addr; - acpi_handle dev_handle, parent_handle; - struct acpi_buffer buffer = {.length = ACPI_ALLOCATE_BUFFER, - .pointer = NULL}; + struct acpi_buffer output = { .length = ACPI_ALLOCATE_BUFFER }; + union acpi_object *out_obj; acpi_status status; - struct acpi_device_info *dinfo = NULL; - int ret = -ENODEV; - struct pci_dev *pdev; - - if (!is_pci_dev(dev)) - return -ENODEV; - - pdev = to_pci_dev(dev); - - bus = pdev->bus->number; - devnum = PCI_SLOT(pdev->devfn); - func = PCI_FUNC(pdev->devfn); - - dev_handle = DEVICE_ACPI_HANDLE(dev); - parent_handle = DEVICE_ACPI_HANDLE(dev->parent); - - status = acpi_get_object_info(parent_handle, &buffer); - if (ACPI_FAILURE(status)) - goto err; - - dinfo = buffer.pointer; - if (dinfo && (dinfo->valid & ACPI_VALID_ADR) && - dinfo->address == bus) { - /* ACPI spec for _ADR for PCI bus: */ - addr = (acpi_integer)(devnum << 16 | func); - *pcidevfn = addr; - *handle = dev_handle; - } else { - goto err; + int rc = 0; + + status = acpi_evaluate_object(ap->acpi_handle, "_GTM", NULL, &output); + + rc = -ENOENT; + if (status == AE_NOT_FOUND) + goto out_free; + + rc = -EINVAL; + if (ACPI_FAILURE(status)) { + ata_port_printk(ap, KERN_ERR, + "ACPI get timing mode failed (AE 0x%x)\n", + status); + goto out_free; } - if (!*handle) - goto err; - ret = 0; -err: - kfree(dinfo); - return ret; -} + out_obj = output.pointer; + if (out_obj->type != ACPI_TYPE_BUFFER) { + ata_port_printk(ap, KERN_WARNING, + "_GTM returned unexpected object type 0x%x\n", + out_obj->type); -struct walk_info { /* can be trimmed some */ - struct device *dev; - struct acpi_device *adev; - acpi_handle handle; - acpi_integer pcidevfn; - unsigned int drivenum; - acpi_handle obj_handle; - struct ata_port *ataport; - struct ata_device *atadev; - u32 sata_adr; - int status; - char basepath[ACPI_PATHNAME_MAX]; - int basepath_len; -}; - -static acpi_status get_devices(acpi_handle handle, - u32 level, void *context, void **return_value) -{ - acpi_status status; - struct walk_info *winfo = context; - struct acpi_buffer namebuf = {ACPI_ALLOCATE_BUFFER, NULL}; - char *pathname; - struct acpi_buffer buffer; - struct acpi_device_info *dinfo; - - status = acpi_get_name(handle, ACPI_FULL_PATHNAME, &namebuf); - if (status) - goto ret; - pathname = namebuf.pointer; - - buffer.length = ACPI_ALLOCATE_BUFFER; - buffer.pointer = NULL; - status = acpi_get_object_info(handle, &buffer); - if (ACPI_FAILURE(status)) - goto out2; - - dinfo = buffer.pointer; - - /* find full device path name for pcidevfn */ - if (dinfo && (dinfo->valid & ACPI_VALID_ADR) && - dinfo->address == winfo->pcidevfn) { - if (ata_msg_probe(winfo->ataport)) - ata_dev_printk(winfo->atadev, KERN_DEBUG, - ":%s: matches pcidevfn (0x%llx)\n", - pathname, winfo->pcidevfn); - strlcpy(winfo->basepath, pathname, - sizeof(winfo->basepath)); - winfo->basepath_len = strlen(pathname); - goto out; + goto out_free; } - /* if basepath is not yet known, ignore this object */ - if (!winfo->basepath_len) - goto out; - - /* if this object is in scope of basepath, maybe use it */ - if (strncmp(pathname, winfo->basepath, - winfo->basepath_len) == 0) { - if (!(dinfo->valid & ACPI_VALID_ADR)) - goto out; - if (ata_msg_probe(winfo->ataport)) - ata_dev_printk(winfo->atadev, KERN_DEBUG, - "GOT ONE: (%s) root_port = 0x%llx," - " port_num = 0x%llx\n", pathname, - SATA_ROOT_PORT(dinfo->address), - SATA_PORT_NUMBER(dinfo->address)); - /* heuristics: */ - if (SATA_PORT_NUMBER(dinfo->address) != NO_PORT_MULT) - if (ata_msg_probe(winfo->ataport)) - ata_dev_printk(winfo->atadev, - KERN_DEBUG, "warning: don't" - " know how to handle SATA port" - " multiplier\n"); - if (SATA_ROOT_PORT(dinfo->address) == - winfo->ataport->port_no && - SATA_PORT_NUMBER(dinfo->address) == NO_PORT_MULT) { - if (ata_msg_probe(winfo->ataport)) - ata_dev_printk(winfo->atadev, - KERN_DEBUG, - "THIS ^^^^^ is the requested" - " SATA drive (handle = 0x%p)\n", - handle); - winfo->sata_adr = dinfo->address; - winfo->obj_handle = handle; - } + if (out_obj->buffer.length != sizeof(struct ata_acpi_gtm)) { + ata_port_printk(ap, KERN_ERR, + "_GTM returned invalid length %d\n", + out_obj->buffer.length); + goto out_free; } -out: - kfree(dinfo); -out2: - kfree(pathname); -ret: - return status; + memcpy(gtm, out_obj->buffer.pointer, sizeof(struct ata_acpi_gtm)); + rc = 0; + out_free: + kfree(output.pointer); + return rc; } -/* Get the SATA drive _ADR object. */ -static int get_sata_adr(struct device *dev, acpi_handle handle, - acpi_integer pcidevfn, unsigned int drive, - struct ata_port *ap, - struct ata_device *atadev, u32 *dev_adr) +/** + * ata_acpi_stm - execute _STM + * @ap: target ATA port + * @stm: timing parameter to _STM + * + * Evaluate _STM with timing parameter @stm. + * + * LOCKING: + * EH context. + * + * RETURNS: + * 0 on success, -ENOENT if _STM doesn't exist, -errno on failure. + */ +static int ata_acpi_stm(const struct ata_port *ap, struct ata_acpi_gtm *stm) { - acpi_status status; - struct walk_info *winfo; - int err = -ENOMEM; - - winfo = kzalloc(sizeof(struct walk_info), GFP_KERNEL); - if (!winfo) - goto out; - - winfo->dev = dev; - winfo->atadev = atadev; - winfo->ataport = ap; - if (acpi_bus_get_device(handle, &winfo->adev) < 0) - if (ata_msg_probe(ap)) - ata_dev_printk(winfo->atadev, KERN_DEBUG, - "acpi_bus_get_device failed\n"); - winfo->handle = handle; - winfo->pcidevfn = pcidevfn; - winfo->drivenum = drive; + acpi_status status; + struct acpi_object_list input; + union acpi_object in_params[3]; - status = acpi_get_devices(NULL, get_devices, winfo, NULL); + in_params[0].type = ACPI_TYPE_BUFFER; + in_params[0].buffer.length = sizeof(struct ata_acpi_gtm); + in_params[0].buffer.pointer = (u8 *)stm; + /* Buffers for id may need byteswapping ? */ + in_params[1].type = ACPI_TYPE_BUFFER; + in_params[1].buffer.length = 512; + in_params[1].buffer.pointer = (u8 *)ap->device[0].id; + in_params[2].type = ACPI_TYPE_BUFFER; + in_params[2].buffer.length = 512; + in_params[2].buffer.pointer = (u8 *)ap->device[1].id; + + input.count = 3; + input.pointer = in_params; + + status = acpi_evaluate_object(ap->acpi_handle, "_STM", &input, NULL); + + if (status == AE_NOT_FOUND) + return -ENOENT; if (ACPI_FAILURE(status)) { - if (ata_msg_probe(ap)) - ata_dev_printk(winfo->atadev, KERN_DEBUG, - "%s: acpi_get_devices failed\n", - __FUNCTION__); - err = -ENODEV; - } else { - *dev_adr = winfo->sata_adr; - atadev->obj_handle = winfo->obj_handle; - err = 0; + ata_port_printk(ap, KERN_ERR, + "ACPI set timing mode failed (status=0x%x)\n", status); + return -EINVAL; } - kfree(winfo); -out: - return err; + return 0; } /** - * do_drive_get_GTF - get the drive bootup default taskfile settings + * ata_dev_get_GTF - get the drive bootup default taskfile settings * @dev: target ATA device - * @gtf_length: number of bytes of _GTF data returned at @gtf_address - * @gtf_address: buffer containing _GTF taskfile arrays + * @gtf: output parameter for buffer containing _GTF taskfile arrays + * @ptr_to_free: pointer which should be freed * * This applies to both PATA and SATA drives. * @@ -282,121 +216,41 @@ out: * The <variable number> is not known in advance, so have ACPI-CA * allocate the buffer as needed and return it, then free it later. * - * The returned @gtf_length and @gtf_address are only valid if the - * function return value is 0. + * LOCKING: + * EH context. + * + * RETURNS: + * Number of taskfiles on success, 0 if _GTF doesn't exist or doesn't + * contain valid data. -errno on other errors. */ -static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length, - unsigned long *gtf_address, unsigned long *obj_loc) +static int ata_dev_get_GTF(struct ata_device *dev, struct ata_acpi_gtf **gtf, + void **ptr_to_free) { struct ata_port *ap = dev->ap; acpi_status status; - acpi_handle dev_handle = NULL; - acpi_handle chan_handle, drive_handle; - acpi_integer pcidevfn = 0; - u32 dev_adr; struct acpi_buffer output; union acpi_object *out_obj; - struct device *gdev = ap->host->dev; - int err = -ENODEV; + int rc = 0; - *gtf_length = 0; - *gtf_address = 0UL; - *obj_loc = 0UL; - - if (libata_noacpi) - return 0; + /* set up output buffer */ + output.length = ACPI_ALLOCATE_BUFFER; + output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ if (ata_msg_probe(ap)) ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n", __FUNCTION__, ap->port_no); - if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED)) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, "%s: ERR: " - "ata_dev_present: %d, PORT_DISABLED: %lu\n", - __FUNCTION__, ata_dev_enabled(dev), - ap->flags & ATA_FLAG_DISABLED); - goto out; - } - - /* Don't continue if device has no _ADR method. - * _GTF is intended for known motherboard devices. */ - if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { - err = pata_get_dev_handle(gdev, &dev_handle, &pcidevfn); - if (err < 0) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s: pata_get_dev_handle failed (%d)\n", - __FUNCTION__, err); - goto out; - } - } else { - err = sata_get_dev_handle(gdev, &dev_handle, &pcidevfn); - if (err < 0) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s: sata_get_dev_handle failed (%d\n", - __FUNCTION__, err); - goto out; - } - } - - /* Get this drive's _ADR info. if not already known. */ - if (!dev->obj_handle) { - if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { - /* get child objects of dev_handle == channel objects, - * + _their_ children == drive objects */ - /* channel is ap->port_no */ - chan_handle = acpi_get_child(dev_handle, - ap->port_no); - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s: chan adr=%d: chan_handle=0x%p\n", - __FUNCTION__, ap->port_no, - chan_handle); - if (!chan_handle) { - err = -ENODEV; - goto out; - } - /* TBD: could also check ACPI object VALID bits */ - drive_handle = acpi_get_child(chan_handle, dev->devno); - if (!drive_handle) { - err = -ENODEV; - goto out; - } - dev_adr = dev->devno; - dev->obj_handle = drive_handle; - } else { /* for SATA mode */ - dev_adr = SATA_ADR_RSVD; - err = get_sata_adr(gdev, dev_handle, pcidevfn, 0, - ap, dev, &dev_adr); - } - if (err < 0 || dev_adr == SATA_ADR_RSVD || - !dev->obj_handle) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s: get_sata/pata_adr failed: " - "err=%d, dev_adr=%u, obj_handle=0x%p\n", - __FUNCTION__, err, dev_adr, - dev->obj_handle); - goto out; - } - } - - /* Setting up output buffer */ - output.length = ACPI_ALLOCATE_BUFFER; - output.pointer = NULL; /* ACPI-CA sets this; save/free it later */ - /* _GTF has no input parameters */ - err = -EIO; - status = acpi_evaluate_object(dev->obj_handle, "_GTF", - NULL, &output); + status = acpi_evaluate_object(dev->acpi_handle, "_GTF", NULL, &output); + if (ACPI_FAILURE(status)) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s: Run _GTF error: status = 0x%x\n", - __FUNCTION__, status); - goto out; + if (status != AE_NOT_FOUND) { + ata_dev_printk(dev, KERN_WARNING, + "_GTF evaluation failed (AE 0x%x)\n", + status); + rc = -EIO; + } + goto out_free; } if (!output.length || !output.pointer) { @@ -406,43 +260,39 @@ static int do_drive_get_GTF(struct ata_device *dev, unsigned int *gtf_length, __FUNCTION__, (unsigned long long)output.length, output.pointer); - kfree(output.pointer); - goto out; + goto out_free; } out_obj = output.pointer; if (out_obj->type != ACPI_TYPE_BUFFER) { - kfree(output.pointer); - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, "%s: Run _GTF: " - "error: expected object type of " - " ACPI_TYPE_BUFFER, got 0x%x\n", - __FUNCTION__, out_obj->type); - err = -ENOENT; - goto out; + ata_dev_printk(dev, KERN_WARNING, + "_GTF unexpected object type 0x%x\n", + out_obj->type); + rc = -EINVAL; + goto out_free; } - if (!out_obj->buffer.length || !out_obj->buffer.pointer || - out_obj->buffer.length % REGS_PER_GTF) { - if (ata_msg_drv(ap)) - ata_dev_printk(dev, KERN_ERR, - "%s: unexpected GTF length (%d) or addr (0x%p)\n", - __FUNCTION__, out_obj->buffer.length, - out_obj->buffer.pointer); - err = -ENOENT; - goto out; + if (out_obj->buffer.length % REGS_PER_GTF) { + ata_dev_printk(dev, KERN_WARNING, + "unexpected _GTF length (%d)\n", + out_obj->buffer.length); + rc = -EINVAL; + goto out_free; } - *gtf_length = out_obj->buffer.length; - *gtf_address = (unsigned long)out_obj->buffer.pointer; - *obj_loc = (unsigned long)out_obj; + *ptr_to_free = out_obj; + *gtf = (void *)out_obj->buffer.pointer; + rc = out_obj->buffer.length / REGS_PER_GTF; + if (ata_msg_probe(ap)) ata_dev_printk(dev, KERN_DEBUG, "%s: returning " - "gtf_length=%d, gtf_address=0x%lx, obj_loc=0x%lx\n", - __FUNCTION__, *gtf_length, *gtf_address, *obj_loc); - err = 0; -out: - return err; + "gtf=%p, gtf_count=%d, ptr_to_free=%p\n", + __FUNCTION__, *gtf, rc, *ptr_to_free); + return rc; + + out_free: + kfree(output.pointer); + return rc; } /** @@ -461,154 +311,99 @@ out: * function also waits for idle after writing control and before * writing the remaining registers. * - * LOCKING: TBD: - * Inherited from caller. + * LOCKING: + * EH context. + * + * RETURNS: + * 0 on success, -errno on failure. */ -static void taskfile_load_raw(struct ata_device *dev, - const struct taskfile_array *gtf) +static int taskfile_load_raw(struct ata_device *dev, + const struct ata_acpi_gtf *gtf) { struct ata_port *ap = dev->ap; - struct ata_taskfile tf; - unsigned int err; + struct ata_taskfile tf, rtf; + unsigned int err_mask; - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, "%s: (0x1f1-1f7): hex: " - "%02x %02x %02x %02x %02x %02x %02x\n", - __FUNCTION__, - gtf->tfa[0], gtf->tfa[1], gtf->tfa[2], - gtf->tfa[3], gtf->tfa[4], gtf->tfa[5], gtf->tfa[6]); - - if ((gtf->tfa[0] == 0) && (gtf->tfa[1] == 0) && (gtf->tfa[2] == 0) - && (gtf->tfa[3] == 0) && (gtf->tfa[4] == 0) && (gtf->tfa[5] == 0) - && (gtf->tfa[6] == 0)) - return; + if ((gtf->tf[0] == 0) && (gtf->tf[1] == 0) && (gtf->tf[2] == 0) + && (gtf->tf[3] == 0) && (gtf->tf[4] == 0) && (gtf->tf[5] == 0) + && (gtf->tf[6] == 0)) + return 0; ata_tf_init(dev, &tf); /* convert gtf to tf */ tf.flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; /* TBD */ tf.protocol = ATA_PROT_NODATA; - tf.feature = gtf->tfa[0]; /* 0x1f1 */ - tf.nsect = gtf->tfa[1]; /* 0x1f2 */ - tf.lbal = gtf->tfa[2]; /* 0x1f3 */ - tf.lbam = gtf->tfa[3]; /* 0x1f4 */ - tf.lbah = gtf->tfa[4]; /* 0x1f5 */ - tf.device = gtf->tfa[5]; /* 0x1f6 */ - tf.command = gtf->tfa[6]; /* 0x1f7 */ - - err = ata_exec_internal(dev, &tf, NULL, DMA_NONE, NULL, 0); - if (err && ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_ERR, - "%s: ata_exec_internal failed: %u\n", - __FUNCTION__, err); -} - -/** - * do_drive_set_taskfiles - write the drive taskfile settings from _GTF - * @dev: target ATA device - * @gtf_length: total number of bytes of _GTF taskfiles - * @gtf_address: location of _GTF taskfile arrays - * - * This applies to both PATA and SATA drives. - * - * Write {gtf_address, length gtf_length} in groups of - * REGS_PER_GTF bytes. - */ -static int do_drive_set_taskfiles(struct ata_device *dev, - unsigned int gtf_length, - unsigned long gtf_address) -{ - struct ata_port *ap = dev->ap; - int err = -ENODEV; - int gtf_count = gtf_length / REGS_PER_GTF; - int ix; - struct taskfile_array *gtf; + tf.feature = gtf->tf[0]; /* 0x1f1 */ + tf.nsect = gtf->tf[1]; /* 0x1f2 */ + tf.lbal = gtf->tf[2]; /* 0x1f3 */ + tf.lbam = gtf->tf[3]; /* 0x1f4 */ + tf.lbah = gtf->tf[4]; /* 0x1f5 */ + tf.device = gtf->tf[5]; /* 0x1f6 */ + tf.command = gtf->tf[6]; /* 0x1f7 */ if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, "%s: ENTER: port#: %d\n", - __FUNCTION__, ap->port_no); - - if (libata_noacpi || !(ap->flags & ATA_FLAG_ACPI_SATA)) - return 0; - - if (!ata_dev_enabled(dev) || (ap->flags & ATA_FLAG_DISABLED)) - goto out; - if (!gtf_count) /* shouldn't be here */ - goto out; - - if (gtf_length % REGS_PER_GTF) { - if (ata_msg_drv(ap)) - ata_dev_printk(dev, KERN_ERR, - "%s: unexpected GTF length (%d)\n", - __FUNCTION__, gtf_length); - goto out; - } - - for (ix = 0; ix < gtf_count; ix++) { - gtf = (struct taskfile_array *) - (gtf_address + ix * REGS_PER_GTF); - - /* send all TaskFile registers (0x1f1-0x1f7) *in*that*order* */ - taskfile_load_raw(dev, gtf); + ata_dev_printk(dev, KERN_DEBUG, "executing ACPI cmd " + "%02x/%02x:%02x:%02x:%02x:%02x:%02x\n", + tf.command, tf.feature, tf.nsect, + tf.lbal, tf.lbam, tf.lbah, tf.device); + + rtf = tf; + err_mask = ata_exec_internal(dev, &rtf, NULL, DMA_NONE, NULL, 0); + if (err_mask) { + ata_dev_printk(dev, KERN_ERR, + "ACPI cmd %02x/%02x:%02x:%02x:%02x:%02x:%02x failed " + "(Emask=0x%x Stat=0x%02x Err=0x%02x)\n", + tf.command, tf.feature, tf.nsect, tf.lbal, tf.lbam, + tf.lbah, tf.device, err_mask, rtf.command, rtf.feature); + return -EIO; } - err = 0; -out: - return err; + return 0; } /** * ata_acpi_exec_tfs - get then write drive taskfile settings - * @ap: the ata_port for the drive + * @dev: target ATA device * - * This applies to both PATA and SATA drives. + * Evaluate _GTF and excute returned taskfiles. + * + * LOCKING: + * EH context. + * + * RETURNS: + * Number of executed taskfiles on success, 0 if _GTF doesn't exist or + * doesn't contain valid data. -errno on other errors. */ -int ata_acpi_exec_tfs(struct ata_port *ap) +static int ata_acpi_exec_tfs(struct ata_device *dev) { - int ix; - int ret = 0; - unsigned int gtf_length; - unsigned long gtf_address; - unsigned long obj_loc; - - if (libata_noacpi) - return 0; - /* - * TBD - implement PATA support. For now, - * we should not run GTF on PATA devices since some - * PATA require execution of GTM/STM before GTF. - */ - if (!(ap->flags & ATA_FLAG_ACPI_SATA)) - return 0; - - for (ix = 0; ix < ATA_MAX_DEVICES; ix++) { - struct ata_device *dev = &ap->device[ix]; - - if (!ata_dev_enabled(dev)) - continue; - - ret = do_drive_get_GTF(dev, >f_length, >f_address, - &obj_loc); - if (ret < 0) { - if (ata_msg_probe(ap)) - ata_port_printk(ap, KERN_DEBUG, - "%s: get_GTF error (%d)\n", - __FUNCTION__, ret); - break; - } - - ret = do_drive_set_taskfiles(dev, gtf_length, gtf_address); - kfree((void *)obj_loc); - if (ret < 0) { - if (ata_msg_probe(ap)) - ata_port_printk(ap, KERN_DEBUG, - "%s: set_taskfiles error (%d)\n", - __FUNCTION__, ret); - break; - } + struct ata_acpi_gtf *gtf = NULL; + void *ptr_to_free = NULL; + int gtf_count, i, rc; + + /* get taskfiles */ + rc = ata_dev_get_GTF(dev, >f, &ptr_to_free); + if (rc < 0) + return rc; + gtf_count = rc; + + /* execute them */ + for (i = 0, rc = 0; i < gtf_count; i++) { + int tmp; + + /* ACPI errors are eventually ignored. Run till the + * end even after errors. + */ + tmp = taskfile_load_raw(dev, gtf++); + if (!rc) + rc = tmp; } - return ret; + kfree(ptr_to_free); + + if (rc == 0) + return gtf_count; + return rc; } /** @@ -620,62 +415,25 @@ int ata_acpi_exec_tfs(struct ata_port *ap) * ATM this function never returns a failure. It is an optional * method and if it fails for whatever reason, we should still * just keep going. + * + * LOCKING: + * EH context. + * + * RETURNS: + * 0 on success, -errno on failure. */ -int ata_acpi_push_id(struct ata_device *dev) +static int ata_acpi_push_id(struct ata_device *dev) { struct ata_port *ap = dev->ap; - acpi_handle handle; - acpi_integer pcidevfn; int err; - struct device *gdev = ap->host->dev; - u32 dev_adr; acpi_status status; struct acpi_object_list input; union acpi_object in_params[1]; - if (libata_noacpi) - return 0; - if (ata_msg_probe(ap)) ata_dev_printk(dev, KERN_DEBUG, "%s: ix = %d, port#: %d\n", __FUNCTION__, dev->devno, ap->port_no); - /* Don't continue if not a SATA device. */ - if (!(ap->flags & ATA_FLAG_ACPI_SATA)) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s: Not a SATA device\n", __FUNCTION__); - goto out; - } - - /* Don't continue if device has no _ADR method. - * _SDD is intended for known motherboard devices. */ - err = sata_get_dev_handle(gdev, &handle, &pcidevfn); - if (err < 0) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s: sata_get_dev_handle failed (%d\n", - __FUNCTION__, err); - goto out; - } - - /* Get this drive's _ADR info, if not already known */ - if (!dev->obj_handle) { - dev_adr = SATA_ADR_RSVD; - err = get_sata_adr(gdev, handle, pcidevfn, dev->devno, ap, dev, - &dev_adr); - if (err < 0 || dev_adr == SATA_ADR_RSVD || - !dev->obj_handle) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s: get_sata_adr failed: " - "err=%d, dev_adr=%u, obj_handle=0x%p\n", - __FUNCTION__, err, dev_adr, - dev->obj_handle); - goto out; - } - } - /* Give the drive Identify data to the drive via the _SDD method */ /* _SDD: set up input parameters */ input.count = 1; @@ -687,20 +445,150 @@ int ata_acpi_push_id(struct ata_device *dev) /* It's OK for _SDD to be missing too. */ swap_buf_le16(dev->id, ATA_ID_WORDS); - status = acpi_evaluate_object(dev->obj_handle, "_SDD", &input, NULL); + status = acpi_evaluate_object(dev->acpi_handle, "_SDD", &input, NULL); swap_buf_le16(dev->id, ATA_ID_WORDS); err = ACPI_FAILURE(status) ? -EIO : 0; - if (err < 0) { - if (ata_msg_probe(ap)) - ata_dev_printk(dev, KERN_DEBUG, - "%s _SDD error: status = 0x%x\n", - __FUNCTION__, status); + if (err < 0) + ata_dev_printk(dev, KERN_WARNING, + "ACPI _SDD failed (AE 0x%x)\n", status); + + return err; +} + +/** + * ata_acpi_on_suspend - ATA ACPI hook called on suspend + * @ap: target ATA port + * + * This function is called when @ap is about to be suspended. All + * devices are already put to sleep but the port_suspend() callback + * hasn't been executed yet. Error return from this function aborts + * suspend. + * + * LOCKING: + * EH context. + * + * RETURNS: + * 0 on success, -errno on failure. + */ +int ata_acpi_on_suspend(struct ata_port *ap) +{ + unsigned long flags; + int rc; + + /* proceed iff per-port acpi_handle is valid */ + if (!ap->acpi_handle) + return 0; + BUG_ON(ap->flags & ATA_FLAG_ACPI_SATA); + + /* store timing parameters */ + rc = ata_acpi_gtm(ap, &ap->acpi_gtm); + + spin_lock_irqsave(ap->lock, flags); + if (rc == 0) + ap->pflags |= ATA_PFLAG_GTM_VALID; + else + ap->pflags &= ~ATA_PFLAG_GTM_VALID; + spin_unlock_irqrestore(ap->lock, flags); + + if (rc == -ENOENT) + rc = 0; + return rc; +} + +/** + * ata_acpi_on_resume - ATA ACPI hook called on resume + * @ap: target ATA port + * + * This function is called when @ap is resumed - right after port + * itself is resumed but before any EH action is taken. + * + * LOCKING: + * EH context. + */ +void ata_acpi_on_resume(struct ata_port *ap) +{ + int i; + + if (ap->acpi_handle && (ap->pflags & ATA_PFLAG_GTM_VALID)) { + BUG_ON(ap->flags & ATA_FLAG_ACPI_SATA); + + /* restore timing parameters */ + ata_acpi_stm(ap, &ap->acpi_gtm); } - /* always return success */ -out: - return 0; + /* schedule _GTF */ + for (i = 0; i < ATA_MAX_DEVICES; i++) + ap->device[i].flags |= ATA_DFLAG_ACPI_PENDING; } +/** + * ata_acpi_on_devcfg - ATA ACPI hook called on device donfiguration + * @dev: target ATA device + * + * This function is called when @dev is about to be configured. + * IDENTIFY data might have been modified after this hook is run. + * + * LOCKING: + * EH context. + * + * RETURNS: + * Positive number if IDENTIFY data needs to be refreshed, 0 if not, + * -errno on failure. + */ +int ata_acpi_on_devcfg(struct ata_device *dev) +{ + struct ata_port *ap = dev->ap; + struct ata_eh_context *ehc = &ap->eh_context; + int acpi_sata = ap->flags & ATA_FLAG_ACPI_SATA; + int rc; + + if (!dev->acpi_handle) + return 0; + + /* do we need to do _GTF? */ + if (!(dev->flags & ATA_DFLAG_ACPI_PENDING) && + !(acpi_sata && (ehc->i.flags & ATA_EHI_DID_HARDRESET))) + return 0; + + /* do _SDD if SATA */ + if (acpi_sata) { + rc = ata_acpi_push_id(dev); + if (rc) + goto acpi_err; + } + + /* do _GTF */ + rc = ata_acpi_exec_tfs(dev); + if (rc < 0) + goto acpi_err; + + dev->flags &= ~ATA_DFLAG_ACPI_PENDING; + + /* refresh IDENTIFY page if any _GTF command has been executed */ + if (rc > 0) { + rc = ata_dev_reread_id(dev, 0); + if (rc < 0) { + ata_dev_printk(dev, KERN_ERR, "failed to IDENTIFY " + "after ACPI commands\n"); + return rc; + } + } + return 0; + + acpi_err: + /* let EH retry on the first failure, disable ACPI on the second */ + if (dev->flags & ATA_DFLAG_ACPI_FAILED) { + ata_dev_printk(dev, KERN_WARNING, "ACPI on devcfg failed the " + "second time, disabling (errno=%d)\n", rc); + + dev->acpi_handle = NULL; + + /* if port is working, request IDENTIFY reload and continue */ + if (!(ap->pflags & ATA_PFLAG_FROZEN)) + rc = 1; + } + dev->flags |= ATA_DFLAG_ACPI_FAILED; + return rc; +} |