diff options
| author | Tejun Heo <htejun@gmail.com> | 2007-09-23 06:19:54 +0200 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-10-12 20:55:44 +0200 |
| commit | d0df8b5d0fb547a3351c2a4b1ded7f7cde5d713a (patch) | |
| tree | a2005ec3be6e493844b092edeca9306fbc70f4b8 /drivers | |
| parent | libata-pmp: hook PMP support and enable it (diff) | |
| download | linux-d0df8b5d0fb547a3351c2a4b1ded7f7cde5d713a.tar.xz linux-d0df8b5d0fb547a3351c2a4b1ded7f7cde5d713a.zip | |
libata-pmp: extend ACPI support to cover PMP
Extend ata_acpi_associate_sata_port() such that it can handle PMP and
call it when PMP is attached and detached.
Build breakage when !CONFIG_ATA_ACPI was spotted and fixed by Petr
Vandrovec.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/libata-acpi.c | 36 | ||||
| -rw-r--r-- | drivers/ata/libata-pmp.c | 4 | ||||
| -rw-r--r-- | drivers/ata/libata.h | 2 |
3 files changed, 38 insertions, 4 deletions
diff --git a/drivers/ata/libata-acpi.c b/drivers/ata/libata-acpi.c index dc9842ec6f06..a276c06dda95 100644 --- a/drivers/ata/libata-acpi.c +++ b/drivers/ata/libata-acpi.c @@ -40,12 +40,40 @@ 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) +/** + * ata_acpi_associate_sata_port - associate SATA port with ACPI objects + * @ap: target SATA port + * + * Look up ACPI objects associated with @ap and initialize acpi_handle + * fields of @ap, the port and devices accordingly. + * + * LOCKING: + * EH context. + * + * RETURNS: + * 0 on success, -errno on failure. + */ +void ata_acpi_associate_sata_port(struct ata_port *ap) { - acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT); + WARN_ON(!(ap->flags & ATA_FLAG_ACPI_SATA)); + + if (!ap->nr_pmp_links) { + acpi_integer adr = SATA_ADR(ap->port_no, NO_PORT_MULT); + + ap->link.device->acpi_handle = + acpi_get_child(ap->host->acpi_handle, adr); + } else { + struct ata_link *link; + + ap->link.device->acpi_handle = NULL; - ap->link.device->acpi_handle = - acpi_get_child(ap->host->acpi_handle, adr); + ata_port_for_each_link(link, ap) { + acpi_integer adr = SATA_ADR(ap->port_no, link->pmp); + + link->device->acpi_handle = + acpi_get_child(ap->host->acpi_handle, adr); + } + } } static void ata_acpi_associate_ide_port(struct ata_port *ap) diff --git a/drivers/ata/libata-pmp.c b/drivers/ata/libata-pmp.c index 671d171055a3..eeffce636d0c 100644 --- a/drivers/ata/libata-pmp.c +++ b/drivers/ata/libata-pmp.c @@ -607,6 +607,8 @@ int sata_pmp_attach(struct ata_device *dev) ata_port_for_each_link(tlink, ap) sata_link_init_spd(tlink); + ata_acpi_associate_sata_port(ap); + return 0; fail: @@ -646,6 +648,8 @@ static void sata_pmp_detach(struct ata_device *dev) ap->nr_pmp_links = 0; link->pmp = 0; spin_unlock_irqrestore(ap->lock, flags); + + ata_acpi_associate_sata_port(ap); } /** diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index a44172fd1f5c..f8bd955c5ba7 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -103,11 +103,13 @@ extern struct ata_port *ata_port_alloc(struct ata_host *host); /* libata-acpi.c */ #ifdef CONFIG_ATA_ACPI +extern void ata_acpi_associate_sata_port(struct ata_port *ap); extern void ata_acpi_associate(struct ata_host *host); extern int ata_acpi_on_suspend(struct ata_port *ap); extern void ata_acpi_on_resume(struct ata_port *ap); extern int ata_acpi_on_devcfg(struct ata_device *adev); #else +static inline void ata_acpi_associate_sata_port(struct ata_port *ap) { } static inline void ata_acpi_associate(struct ata_host *host) { } static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; } static inline void ata_acpi_on_resume(struct ata_port *ap) { } |