diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0109-libahci-Allow-drivers-to-override-start_engine.patch')
-rw-r--r-- | target/linux/ipq806x/patches/0109-libahci-Allow-drivers-to-override-start_engine.patch | 212 |
1 files changed, 0 insertions, 212 deletions
diff --git a/target/linux/ipq806x/patches/0109-libahci-Allow-drivers-to-override-start_engine.patch b/target/linux/ipq806x/patches/0109-libahci-Allow-drivers-to-override-start_engine.patch deleted file mode 100644 index aa2fee6..0000000 --- a/target/linux/ipq806x/patches/0109-libahci-Allow-drivers-to-override-start_engine.patch +++ /dev/null @@ -1,212 +0,0 @@ -From 10f3c772363e549c3dbd3cc3755d270c5656d5b8 Mon Sep 17 00:00:00 2001 -From: Hans de Goede <hdegoede@redhat.com> -Date: Sat, 22 Feb 2014 16:53:30 +0100 -Subject: [PATCH 109/182] libahci: Allow drivers to override start_engine - -Allwinner A10 and A20 ARM SoCs have an AHCI sata controller which needs a -special register to be poked before starting the DMA engine. - -This register gets reset on an ahci_stop_engine call, so there is no other -place then ahci_start_engine where this poking can be done. - -This commit allows drivers to override ahci_start_engine behavior for use by -the Allwinner AHCI driver (and potentially other drivers in the future). - -Signed-off-by: Hans de Goede <hdegoede@redhat.com> -Signed-off-by: Tejun Heo <tj@kernel.org> ---- - drivers/ata/ahci.c | 6 ++++-- - drivers/ata/ahci.h | 6 ++++++ - drivers/ata/libahci.c | 26 +++++++++++++++++++------- - drivers/ata/sata_highbank.c | 3 ++- - 4 files changed, 31 insertions(+), 10 deletions(-) - ---- a/drivers/ata/ahci.c -+++ b/drivers/ata/ahci.c -@@ -606,6 +606,7 @@ static int ahci_vt8251_hardreset(struct - unsigned long deadline) - { - struct ata_port *ap = link->ap; -+ struct ahci_host_priv *hpriv = ap->host->private_data; - bool online; - int rc; - -@@ -616,7 +617,7 @@ static int ahci_vt8251_hardreset(struct - rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context), - deadline, &online, NULL); - -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - - DPRINTK("EXIT, rc=%d, class=%u\n", rc, *class); - -@@ -631,6 +632,7 @@ static int ahci_p5wdh_hardreset(struct a - { - struct ata_port *ap = link->ap; - struct ahci_port_priv *pp = ap->private_data; -+ struct ahci_host_priv *hpriv = ap->host->private_data; - u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; - struct ata_taskfile tf; - bool online; -@@ -646,7 +648,7 @@ static int ahci_p5wdh_hardreset(struct a - rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context), - deadline, &online, NULL); - -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - - /* The pseudo configuration device on SIMG4726 attached to - * ASUS P5W-DH Deluxe doesn't send signature FIS after ---- a/drivers/ata/ahci.h -+++ b/drivers/ata/ahci.h -@@ -324,6 +324,12 @@ struct ahci_host_priv { - u32 em_msg_type; /* EM message type */ - struct clk *clk; /* Only for platforms supporting clk */ - void *plat_data; /* Other platform data */ -+ /* -+ * Optional ahci_start_engine override, if not set this gets set to the -+ * default ahci_start_engine during ahci_save_initial_config, this can -+ * be overridden anytime before the host is activated. -+ */ -+ void (*start_engine)(struct ata_port *ap); - }; - - extern int ahci_ignore_sss; ---- a/drivers/ata/libahci.c -+++ b/drivers/ata/libahci.c -@@ -394,6 +394,9 @@ static ssize_t ahci_show_em_supported(st - * - * If inconsistent, config values are fixed up by this function. - * -+ * If it is not set already this function sets hpriv->start_engine to -+ * ahci_start_engine. -+ * - * LOCKING: - * None. - */ -@@ -500,6 +503,9 @@ void ahci_save_initial_config(struct dev - hpriv->cap = cap; - hpriv->cap2 = cap2; - hpriv->port_map = port_map; -+ -+ if (!hpriv->start_engine) -+ hpriv->start_engine = ahci_start_engine; - } - EXPORT_SYMBOL_GPL(ahci_save_initial_config); - -@@ -766,7 +772,7 @@ static void ahci_start_port(struct ata_p - - /* enable DMA */ - if (!(hpriv->flags & AHCI_HFLAG_DELAY_ENGINE)) -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - - /* turn on LEDs */ - if (ap->flags & ATA_FLAG_EM) { -@@ -1234,7 +1240,7 @@ int ahci_kick_engine(struct ata_port *ap - - /* restart engine */ - out_restart: -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - return rc; - } - EXPORT_SYMBOL_GPL(ahci_kick_engine); -@@ -1426,6 +1432,7 @@ static int ahci_hardreset(struct ata_lin - const unsigned long *timing = sata_ehc_deb_timing(&link->eh_context); - struct ata_port *ap = link->ap; - struct ahci_port_priv *pp = ap->private_data; -+ struct ahci_host_priv *hpriv = ap->host->private_data; - u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; - struct ata_taskfile tf; - bool online; -@@ -1443,7 +1450,7 @@ static int ahci_hardreset(struct ata_lin - rc = sata_link_hardreset(link, timing, deadline, &online, - ahci_check_ready); - -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - - if (online) - *class = ahci_dev_classify(ap); -@@ -2007,10 +2014,12 @@ static void ahci_thaw(struct ata_port *a - - void ahci_error_handler(struct ata_port *ap) - { -+ struct ahci_host_priv *hpriv = ap->host->private_data; -+ - if (!(ap->pflags & ATA_PFLAG_FROZEN)) { - /* restart engine */ - ahci_stop_engine(ap); -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - } - - sata_pmp_error_handler(ap); -@@ -2031,6 +2040,7 @@ static void ahci_post_internal_cmd(struc - - static void ahci_set_aggressive_devslp(struct ata_port *ap, bool sleep) - { -+ struct ahci_host_priv *hpriv = ap->host->private_data; - void __iomem *port_mmio = ahci_port_base(ap); - struct ata_device *dev = ap->link.device; - u32 devslp, dm, dito, mdat, deto; -@@ -2094,7 +2104,7 @@ static void ahci_set_aggressive_devslp(s - PORT_DEVSLP_ADSE); - writel(devslp, port_mmio + PORT_DEVSLP); - -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - - /* enable device sleep feature for the drive */ - err_mask = ata_dev_set_feature(dev, -@@ -2106,6 +2116,7 @@ static void ahci_set_aggressive_devslp(s - - static void ahci_enable_fbs(struct ata_port *ap) - { -+ struct ahci_host_priv *hpriv = ap->host->private_data; - struct ahci_port_priv *pp = ap->private_data; - void __iomem *port_mmio = ahci_port_base(ap); - u32 fbs; -@@ -2134,11 +2145,12 @@ static void ahci_enable_fbs(struct ata_p - } else - dev_err(ap->host->dev, "Failed to enable FBS\n"); - -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - } - - static void ahci_disable_fbs(struct ata_port *ap) - { -+ struct ahci_host_priv *hpriv = ap->host->private_data; - struct ahci_port_priv *pp = ap->private_data; - void __iomem *port_mmio = ahci_port_base(ap); - u32 fbs; -@@ -2166,7 +2178,7 @@ static void ahci_disable_fbs(struct ata_ - pp->fbs_enabled = false; - } - -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - } - - static void ahci_pmp_attach(struct ata_port *ap) ---- a/drivers/ata/sata_highbank.c -+++ b/drivers/ata/sata_highbank.c -@@ -403,6 +403,7 @@ static int ahci_highbank_hardreset(struc - static const unsigned long timing[] = { 5, 100, 500}; - struct ata_port *ap = link->ap; - struct ahci_port_priv *pp = ap->private_data; -+ struct ahci_host_priv *hpriv = ap->host->private_data; - u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG; - struct ata_taskfile tf; - bool online; -@@ -431,7 +432,7 @@ static int ahci_highbank_hardreset(struc - break; - } while (!online && retry--); - -- ahci_start_engine(ap); -+ hpriv->start_engine(ap); - - if (online) - *class = ahci_dev_classify(ap); |