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-rw-r--r--drivers/usb/host/Kconfig11
-rw-r--r--drivers/usb/host/Makefile6
-rw-r--r--drivers/usb/host/ehci-atmel.c2
-rw-r--r--drivers/usb/host/ehci-au1xxx.c6
-rw-r--r--drivers/usb/host/ehci-fsl.c97
-rw-r--r--drivers/usb/host/ehci-hcd.c2
-rw-r--r--drivers/usb/host/ehci-mxc.c23
-rw-r--r--drivers/usb/host/ehci-omap.c47
-rw-r--r--drivers/usb/host/ehci-orion.c8
-rw-r--r--drivers/usb/host/ehci-ppc-of.c14
-rw-r--r--drivers/usb/host/ehci-sched.c40
-rw-r--r--drivers/usb/host/ehci-xilinx-of.c8
-rw-r--r--drivers/usb/host/ehci.h5
-rw-r--r--drivers/usb/host/fhci-hcd.c4
-rw-r--r--drivers/usb/host/imx21-dbg.c527
-rw-r--r--drivers/usb/host/imx21-hcd.c1789
-rw-r--r--drivers/usb/host/imx21-hcd.h436
-rw-r--r--drivers/usb/host/isp1362-hcd.c15
-rw-r--r--drivers/usb/host/isp1760-hcd.c10
-rw-r--r--drivers/usb/host/isp1760-if.c2
-rw-r--r--drivers/usb/host/ohci-da8xx.c456
-rw-r--r--drivers/usb/host/ohci-dbg.c4
-rw-r--r--drivers/usb/host/ohci-hcd.c5
-rw-r--r--drivers/usb/host/ohci-lh7a404.c11
-rw-r--r--drivers/usb/host/ohci-pnx4008.c6
-rw-r--r--drivers/usb/host/ohci-ppc-of.c10
-rw-r--r--drivers/usb/host/ohci-ppc-soc.c8
-rw-r--r--drivers/usb/host/ohci-sa1111.c8
-rw-r--r--drivers/usb/host/r8a66597-hcd.c16
-rw-r--r--drivers/usb/host/sl811-hcd.c5
-rw-r--r--drivers/usb/host/uhci-hcd.c1
-rw-r--r--drivers/usb/host/xhci-dbg.c19
-rw-r--r--drivers/usb/host/xhci-ext-caps.h7
-rw-r--r--drivers/usb/host/xhci-hub.c65
-rw-r--r--drivers/usb/host/xhci-mem.c56
-rw-r--r--drivers/usb/host/xhci-pci.c1
-rw-r--r--drivers/usb/host/xhci-ring.c41
-rw-r--r--drivers/usb/host/xhci.c (renamed from drivers/usb/host/xhci-hcd.c)151
-rw-r--r--drivers/usb/host/xhci.h11
39 files changed, 3768 insertions, 165 deletions
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 2678a1624fcc..8d3df0397de3 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -399,3 +399,14 @@ config USB_HWA_HCD
To compile this driver a module, choose M here: the module
will be called "hwa-hc".
+
+config USB_IMX21_HCD
+ tristate "iMX21 HCD support"
+ depends on USB && ARM && MACH_MX21
+ help
+ This driver enables support for the on-chip USB host in the
+ iMX21 processor.
+
+ To compile this driver as a module, choose M here: the
+ module will be called "imx21-hcd".
+
diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
index f58b2494c44a..b6315aa47f7a 100644
--- a/drivers/usb/host/Makefile
+++ b/drivers/usb/host/Makefile
@@ -12,7 +12,7 @@ fhci-objs := fhci-hcd.o fhci-hub.o fhci-q.o fhci-mem.o \
ifeq ($(CONFIG_FHCI_DEBUG),y)
fhci-objs += fhci-dbg.o
endif
-xhci-objs := xhci-hcd.o xhci-mem.o xhci-pci.o xhci-ring.o xhci-hub.o xhci-dbg.o
+xhci-hcd-objs := xhci.o xhci-mem.o xhci-pci.o xhci-ring.o xhci-hub.o xhci-dbg.o
obj-$(CONFIG_USB_WHCI_HCD) += whci/
@@ -25,10 +25,12 @@ obj-$(CONFIG_USB_ISP1362_HCD) += isp1362-hcd.o
obj-$(CONFIG_USB_OHCI_HCD) += ohci-hcd.o
obj-$(CONFIG_USB_UHCI_HCD) += uhci-hcd.o
obj-$(CONFIG_USB_FHCI_HCD) += fhci.o
-obj-$(CONFIG_USB_XHCI_HCD) += xhci.o
+obj-$(CONFIG_USB_XHCI_HCD) += xhci-hcd.o
obj-$(CONFIG_USB_SL811_HCD) += sl811-hcd.o
obj-$(CONFIG_USB_SL811_CS) += sl811_cs.o
obj-$(CONFIG_USB_U132_HCD) += u132-hcd.o
obj-$(CONFIG_USB_R8A66597_HCD) += r8a66597-hcd.o
obj-$(CONFIG_USB_ISP1760_HCD) += isp1760.o
obj-$(CONFIG_USB_HWA_HCD) += hwa-hc.o
+obj-$(CONFIG_USB_IMX21_HCD) += imx21-hcd.o
+
diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c
index 87c1b7c34c0e..51bd0edf544f 100644
--- a/drivers/usb/host/ehci-atmel.c
+++ b/drivers/usb/host/ehci-atmel.c
@@ -149,7 +149,7 @@ static int __init ehci_atmel_drv_probe(struct platform_device *pdev)
goto fail_request_resource;
}
hcd->rsrc_start = res->start;
- hcd->rsrc_len = res->end - res->start + 1;
+ hcd->rsrc_len = resource_size(res);
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
driver->description)) {
diff --git a/drivers/usb/host/ehci-au1xxx.c b/drivers/usb/host/ehci-au1xxx.c
index dbfb482a94e3..e3a74e75e822 100644
--- a/drivers/usb/host/ehci-au1xxx.c
+++ b/drivers/usb/host/ehci-au1xxx.c
@@ -121,6 +121,7 @@ static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
{
struct usb_hcd *hcd;
struct ehci_hcd *ehci;
+ struct resource *res;
int ret;
if (usb_disabled())
@@ -144,8 +145,9 @@ static int ehci_hcd_au1xxx_drv_probe(struct platform_device *pdev)
if (!hcd)
return -ENOMEM;
- hcd->rsrc_start = pdev->resource[0].start;
- hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
pr_debug("request_mem_region failed");
diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
index 991174937db3..0e26aa13f158 100644
--- a/drivers/usb/host/ehci-fsl.c
+++ b/drivers/usb/host/ehci-fsl.c
@@ -1,5 +1,6 @@
/*
- * Copyright (c) 2005 MontaVista Software
+ * Copyright 2005-2009 MontaVista Software, Inc.
+ * Copyright 2008 Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -17,17 +18,20 @@
*
* Ported to 834x by Randy Vinson <rvinson@mvista.com> using code provided
* by Hunter Wu.
+ * Power Management support by Dave Liu <daveliu@freescale.com>,
+ * Jerry Huang <Chang-Ming.Huang@freescale.com> and
+ * Anton Vorontsov <avorontsov@ru.mvista.com>.
*/
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
#include <linux/platform_device.h>
#include <linux/fsl_devices.h>
#include "ehci-fsl.h"
-/* FIXME: Power Management is un-ported so temporarily disable it */
-#undef CONFIG_PM
-
-
/* configure so an HC device and id are always provided */
/* always called with process context; sleeping is OK */
@@ -40,8 +44,8 @@
* Allocates basic resources for this USB host controller.
*
*/
-int usb_hcd_fsl_probe(const struct hc_driver *driver,
- struct platform_device *pdev)
+static int usb_hcd_fsl_probe(const struct hc_driver *driver,
+ struct platform_device *pdev)
{
struct fsl_usb2_platform_data *pdata;
struct usb_hcd *hcd;
@@ -147,7 +151,8 @@ int usb_hcd_fsl_probe(const struct hc_driver *driver,
* Reverses the effect of usb_hcd_fsl_probe().
*
*/
-void usb_hcd_fsl_remove(struct usb_hcd *hcd, struct platform_device *pdev)
+static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
+ struct platform_device *pdev)
{
usb_remove_hcd(hcd);
iounmap(hcd->regs);
@@ -284,10 +289,81 @@ static int ehci_fsl_setup(struct usb_hcd *hcd)
return retval;
}
+struct ehci_fsl {
+ struct ehci_hcd ehci;
+
+#ifdef CONFIG_PM
+ /* Saved USB PHY settings, need to restore after deep sleep. */
+ u32 usb_ctrl;
+#endif
+};
+
+#ifdef CONFIG_PM
+
+static struct ehci_fsl *hcd_to_ehci_fsl(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+
+ return container_of(ehci, struct ehci_fsl, ehci);
+}
+
+static int ehci_fsl_drv_suspend(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+ void __iomem *non_ehci = hcd->regs;
+
+ if (!fsl_deep_sleep())
+ return 0;
+
+ ehci_fsl->usb_ctrl = in_be32(non_ehci + FSL_SOC_USB_CTRL);
+ return 0;
+}
+
+static int ehci_fsl_drv_resume(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+ struct ehci_fsl *ehci_fsl = hcd_to_ehci_fsl(hcd);
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ void __iomem *non_ehci = hcd->regs;
+
+ if (!fsl_deep_sleep())
+ return 0;
+
+ usb_root_hub_lost_power(hcd->self.root_hub);
+
+ /* Restore USB PHY settings and enable the controller. */
+ out_be32(non_ehci + FSL_SOC_USB_CTRL, ehci_fsl->usb_ctrl);
+
+ ehci_reset(ehci);
+ ehci_fsl_reinit(ehci);
+
+ return 0;
+}
+
+static int ehci_fsl_drv_restore(struct device *dev)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+ usb_root_hub_lost_power(hcd->self.root_hub);
+ return 0;
+}
+
+static struct dev_pm_ops ehci_fsl_pm_ops = {
+ .suspend = ehci_fsl_drv_suspend,
+ .resume = ehci_fsl_drv_resume,
+ .restore = ehci_fsl_drv_restore,
+};
+
+#define EHCI_FSL_PM_OPS (&ehci_fsl_pm_ops)
+#else
+#define EHCI_FSL_PM_OPS NULL
+#endif /* CONFIG_PM */
+
static const struct hc_driver ehci_fsl_hc_driver = {
.description = hcd_name,
.product_desc = "Freescale On-Chip EHCI Host Controller",
- .hcd_priv_size = sizeof(struct ehci_hcd),
+ .hcd_priv_size = sizeof(struct ehci_fsl),
/*
* generic hardware linkage
@@ -354,6 +430,7 @@ static struct platform_driver ehci_fsl_driver = {
.remove = ehci_fsl_drv_remove,
.shutdown = usb_hcd_platform_shutdown,
.driver = {
- .name = "fsl-ehci",
+ .name = "fsl-ehci",
+ .pm = EHCI_FSL_PM_OPS,
},
};
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index d8d6d3461d32..dc55a62859c6 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -995,7 +995,7 @@ rescan:
/* endpoints can be iso streams. for now, we don't
* accelerate iso completions ... so spin a while.
*/
- if (qh->hw->hw_info1 == 0) {
+ if (qh->hw == NULL) {
ehci_vdbg (ehci, "iso delay\n");
goto idle_timeout;
}
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c
index 35c56f40bdbb..23cd917088b4 100644
--- a/drivers/usb/host/ehci-mxc.c
+++ b/drivers/usb/host/ehci-mxc.c
@@ -162,6 +162,17 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
goto err_ioremap;
}
+ /* call platform specific init function */
+ if (pdata->init) {
+ ret = pdata->init(pdev);
+ if (ret) {
+ dev_err(dev, "platform init failed\n");
+ goto err_init;
+ }
+ /* platforms need some time to settle changed IO settings */
+ mdelay(10);
+ }
+
/* enable clocks */
priv->usbclk = clk_get(dev, "usb");
if (IS_ERR(priv->usbclk)) {
@@ -192,18 +203,6 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev)
if (ret < 0)
goto err_init;
- /* call platform specific init function */
- if (pdata->init) {
- ret = pdata->init(pdev);
- if (ret) {
- dev_err(dev, "platform init failed\n");
- goto err_init;
- }
- }
-
- /* most platforms need some time to settle changed IO settings */
- mdelay(10);
-
/* Initialize the transceiver */
if (pdata->otg) {
pdata->otg->io_priv = hcd->regs + ULPI_VIEWPORT_OFFSET;
diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
index 74d07f4e8b7d..f0282d6bb7aa 100644
--- a/drivers/usb/host/ehci-omap.c
+++ b/drivers/usb/host/ehci-omap.c
@@ -26,10 +26,9 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
- * TODO (last updated Feb 23rd, 2009):
+ * TODO (last updated Feb 12, 2010):
* - add kernel-doc
* - enable AUTOIDLE
- * - move DPLL5 programming to clock fw
* - add suspend/resume
* - move workarounds to board-files
*/
@@ -37,6 +36,7 @@
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/gpio.h>
+#include <linux/regulator/consumer.h>
#include <plat/usb.h>
/*
@@ -178,6 +178,11 @@ struct ehci_hcd_omap {
void __iomem *uhh_base;
void __iomem *tll_base;
void __iomem *ehci_base;
+
+ /* Regulators for USB PHYs.
+ * Each PHY can have a seperate regulator.
+ */
+ struct regulator *regulator[OMAP3_HS_USB_PORTS];
};
/*-------------------------------------------------------------------------*/
@@ -546,6 +551,8 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
int irq = platform_get_irq(pdev, 0);
int ret = -ENODEV;
+ int i;
+ char supply[7];
if (!pdata) {
dev_dbg(&pdev->dev, "missing platform_data\n");
@@ -613,6 +620,21 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
goto err_tll_ioremap;
}
+ /* get ehci regulator and enable */
+ for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+ if (omap->port_mode[i] != EHCI_HCD_OMAP_MODE_PHY) {
+ omap->regulator[i] = NULL;
+ continue;
+ }
+ snprintf(supply, sizeof(supply), "hsusb%d", i);
+ omap->regulator[i] = regulator_get(omap->dev, supply);
+ if (IS_ERR(omap->regulator[i]))
+ dev_dbg(&pdev->dev,
+ "failed to get ehci port%d regulator\n", i);
+ else
+ regulator_enable(omap->regulator[i]);
+ }
+
ret = omap_start_ehc(omap, hcd);
if (ret) {
dev_dbg(&pdev->dev, "failed to start ehci\n");
@@ -622,13 +644,12 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
omap->ehci->regs = hcd->regs
+ HC_LENGTH(readl(&omap->ehci->caps->hc_capbase));
+ dbg_hcs_params(omap->ehci, "reset");
+ dbg_hcc_params(omap->ehci, "reset");
+
/* cache this readonly data; minimize chip reads */
omap->ehci->hcs_params = readl(&omap->ehci->caps->hcs_params);
- /* SET 1 micro-frame Interrupt interval */
- writel(readl(&omap->ehci->regs->command) | (1 << 16),
- &omap->ehci->regs->command);
-
ret = usb_add_hcd(hcd, irq, IRQF_DISABLED | IRQF_SHARED);
if (ret) {
dev_dbg(&pdev->dev, "failed to add hcd with err %d\n", ret);
@@ -641,6 +662,12 @@ err_add_hcd:
omap_stop_ehc(omap, hcd);
err_start:
+ for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+ if (omap->regulator[i]) {
+ regulator_disable(omap->regulator[i]);
+ regulator_put(omap->regulator[i]);
+ }
+ }
iounmap(omap->tll_base);
err_tll_ioremap:
@@ -674,13 +701,21 @@ static int ehci_hcd_omap_remove(struct platform_device *pdev)
{
struct ehci_hcd_omap *omap = platform_get_drvdata(pdev);
struct usb_hcd *hcd = ehci_to_hcd(omap->ehci);
+ int i;
usb_remove_hcd(hcd);
omap_stop_ehc(omap, hcd);
iounmap(hcd->regs);
+ for (i = 0 ; i < OMAP3_HS_USB_PORTS ; i++) {
+ if (omap->regulator[i]) {
+ regulator_disable(omap->regulator[i]);
+ regulator_put(omap->regulator[i]);
+ }
+ }
iounmap(omap->tll_base);
iounmap(omap->uhh_base);
usb_put_hcd(hcd);
+ kfree(omap);
return 0;
}
diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c
index 1d283e1b2b8d..0f87dc72820a 100644
--- a/drivers/usb/host/ehci-orion.c
+++ b/drivers/usb/host/ehci-orion.c
@@ -222,14 +222,14 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev)
goto err1;
}
- if (!request_mem_region(res->start, res->end - res->start + 1,
+ if (!request_mem_region(res->start, resource_size(res),
ehci_orion_hc_driver.description)) {
dev_dbg(&pdev->dev, "controller already in use\n");
err = -EBUSY;
goto err1;
}
- regs = ioremap(res->start, res->end - res->start + 1);
+ regs = ioremap(res->start, resource_size(res));
if (regs == NULL) {
dev_dbg(&pdev->dev, "error mapping memory\n");
err = -EFAULT;
@@ -244,7 +244,7 @@ static int __devinit ehci_orion_drv_probe(struct platform_device *pdev)
}
hcd->rsrc_start = res->start;
- hcd->rsrc_len = res->end - res->start + 1;
+ hcd->rsrc_len = resource_size(res);
hcd->regs = regs;
ehci = hcd_to_ehci(hcd);
@@ -287,7 +287,7 @@ err4:
err3:
iounmap(regs);
err2:
- release_mem_region(res->start, res->end - res->start + 1);
+ release_mem_region(res->start, resource_size(res));
err1:
dev_err(&pdev->dev, "init %s fail, %d\n",
dev_name(&pdev->dev), err);
diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index 36f96da129f5..8df33b8a634c 100644
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -134,21 +134,21 @@ ehci_hcd_ppc_of_probe(struct of_device *op, const struct of_device_id *match)
hcd->rsrc_len = res.end - res.start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
- printk(KERN_ERR __FILE__ ": request_mem_region failed\n");
+ printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__);
rv = -EBUSY;
goto err_rmr;
}
irq = irq_of_parse_and_map(dn, 0);
if (irq == NO_IRQ) {
- printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n");
+ printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
rv = -EBUSY;
goto err_irq;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
- printk(KERN_ERR __FILE__ ": ioremap failed\n");
+ printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
rv = -ENOMEM;
goto err_ioremap;
}
@@ -161,9 +161,9 @@ ehci_hcd_ppc_of_probe(struct of_device *op, const struct of_device_id *match)
ehci->ohci_hcctrl_reg = ioremap(res.start +
OHCI_HCCTRL_OFFSET, OHCI_HCCTRL_LEN);
else
- pr_debug(__FILE__ ": no ohci offset in fdt\n");
+ pr_debug("%s: no ohci offset in fdt\n", __FILE__);
if (!ehci->ohci_hcctrl_reg) {
- pr_debug(__FILE__ ": ioremap for ohci hcctrl failed\n");
+ pr_debug("%s: ioremap for ohci hcctrl failed\n", __FILE__);
} else {
ehci->has_amcc_usb23 = 1;
}
@@ -241,7 +241,7 @@ static int ehci_hcd_ppc_of_remove(struct of_device *op)
else
release_mem_region(res.start, 0x4);
else
- pr_debug(__FILE__ ": no ohci offset in fdt\n");
+ pr_debug("%s: no ohci offset in fdt\n", __FILE__);
of_node_put(np);
}
@@ -264,7 +264,7 @@ static int ehci_hcd_ppc_of_shutdown(struct of_device *op)
}
-static struct of_device_id ehci_hcd_ppc_of_match[] = {
+static const struct of_device_id ehci_hcd_ppc_of_match[] = {
{
.compatible = "usb-ehci",
},
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index 1e391e624c8a..a0aaaaff2560 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -510,6 +510,8 @@ static int disable_periodic (struct ehci_hcd *ehci)
ehci_writel(ehci, cmd, &ehci->regs->command);
/* posted write ... */
+ free_cached_itd_list(ehci);
+
ehci->next_uframe = -1;
return 0;
}
@@ -1121,8 +1123,8 @@ iso_stream_find (struct ehci_hcd *ehci, struct urb *urb)
urb->interval);
}
- /* if dev->ep [epnum] is a QH, info1.maxpacket is nonzero */
- } else if (unlikely (stream->hw_info1 != 0)) {
+ /* if dev->ep [epnum] is a QH, hw is set */
+ } else if (unlikely (stream->hw != NULL)) {
ehci_dbg (ehci, "dev %s ep%d%s, not iso??\n",
urb->dev->devpath, epnum,
usb_pipein(urb->pipe) ? "in" : "out");
@@ -1563,13 +1565,27 @@ itd_patch(
static inline void
itd_link (struct ehci_hcd *ehci, unsigned frame, struct ehci_itd *itd)
{
- /* always prepend ITD/SITD ... only QH tree is order-sensitive */
- itd->itd_next = ehci->pshadow [frame];
- itd->hw_next = ehci->periodic [frame];
- ehci->pshadow [frame].itd = itd;
+ union ehci_shadow *prev = &ehci->pshadow[frame];
+ __hc32 *hw_p = &ehci->periodic[frame];
+ union ehci_shadow here = *prev;
+ __hc32 type = 0;
+
+ /* skip any iso nodes which might belong to previous microframes */
+ while (here.ptr) {
+ type = Q_NEXT_TYPE(ehci, *hw_p);
+ if (type == cpu_to_hc32(ehci, Q_TYPE_QH))
+ break;
+ prev = periodic_next_shadow(ehci, prev, type);
+ hw_p = shadow_next_periodic(ehci, &here, type);
+ here = *prev;
+ }
+
+ itd->itd_next = here;
+ itd->hw_next = *hw_p;
+ prev->itd = itd;
itd->frame = frame;
wmb ();
- ehci->periodic[frame] = cpu_to_hc32(ehci, itd->itd_dma | Q_TYPE_ITD);
+ *hw_p = cpu_to_hc32(ehci, itd->itd_dma | Q_TYPE_ITD);
}
/* fit urb's itds into the selected schedule slot; activate as needed */
@@ -2322,9 +2338,13 @@ restart:
* No need to check for activity unless the
* frame is current.
*/
- if (frame == clock_frame && live &&
- (q.sitd->hw_results &
- SITD_ACTIVE(ehci))) {
+ if (((frame == clock_frame) ||
+ (((frame + 1) % ehci->periodic_size)
+ == clock_frame))
+ && live
+ && (q.sitd->hw_results &
+ SITD_ACTIVE(ehci))) {
+
incomplete = true;
q_p = &q.sitd->sitd_next;
hw_p = &q.sitd->hw_next;
diff --git a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c
index a5861531ad3e..f603bb2c0a8e 100644
--- a/drivers/usb/host/ehci-xilinx-of.c
+++ b/drivers/usb/host/ehci-xilinx-of.c
@@ -177,21 +177,21 @@ ehci_hcd_xilinx_of_probe(struct of_device *op, const struct of_device_id *match)
hcd->rsrc_len = res.end - res.start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
- printk(KERN_ERR __FILE__ ": request_mem_region failed\n");
+ printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__);
rv = -EBUSY;
goto err_rmr;
}
irq = irq_of_parse_and_map(dn, 0);
if (irq == NO_IRQ) {
- printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n");
+ printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
rv = -EBUSY;
goto err_irq;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
- printk(KERN_ERR __FILE__ ": ioremap failed\n");
+ printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
rv = -ENOMEM;
goto err_ioremap;
}
@@ -281,7 +281,7 @@ static int ehci_hcd_xilinx_of_shutdown(struct of_device *op)
}
-static struct of_device_id ehci_hcd_xilinx_of_match[] = {
+static const struct of_device_id ehci_hcd_xilinx_of_match[] = {
{.compatible = "xlnx,xps-usb-host-1.00.a",},
{},
};
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 2d85e21ff282..b1dce96dd621 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -394,9 +394,8 @@ struct ehci_iso_sched {
* acts like a qh would, if EHCI had them for ISO.
*/
struct ehci_iso_stream {
- /* first two fields match QH, but info1 == 0 */
- __hc32 hw_next;
- __hc32 hw_info1;
+ /* first field matches ehci_hq, but is NULL */
+ struct ehci_qh_hw *hw;
u32 refcount;
u8 bEndpointAddress;
diff --git a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
index 78e7c3cfcb72..5dcfb3de9945 100644
--- a/drivers/usb/host/fhci-hcd.c
+++ b/drivers/usb/host/fhci-hcd.c
@@ -433,7 +433,7 @@ static int fhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
return -ENOMEM;
/* allocate the private part of the URB */
- urb_priv->tds = kzalloc(size * sizeof(struct td), mem_flags);
+ urb_priv->tds = kcalloc(size, sizeof(*urb_priv->tds), mem_flags);
if (!urb_priv->tds) {
kfree(urb_priv);
return -ENOMEM;
@@ -805,7 +805,7 @@ static int __devexit of_fhci_remove(struct of_device *ofdev)
return fhci_remove(&ofdev->dev);
}
-static struct of_device_id of_fhci_match[] = {
+static const struct of_device_id of_fhci_match[] = {
{ .compatible = "fsl,mpc8323-qe-usb", },
{},
};
diff --git a/drivers/usb/host/imx21-dbg.c b/drivers/usb/host/imx21-dbg.c
new file mode 100644
index 000000000000..512f647448ca
--- /dev/null
+++ b/drivers/usb/host/imx21-dbg.c
@@ -0,0 +1,527 @@
+/*
+ * Copyright (c) 2009 by Martin Fuzzey
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/* this file is part of imx21-hcd.c */
+
+#ifndef DEBUG
+
+static inline void create_debug_files(struct imx21 *imx21) { }
+static inline void remove_debug_files(struct imx21 *imx21) { }
+static inline void debug_urb_submitted(struct imx21 *imx21, struct urb *urb) {}
+static inline void debug_urb_completed(struct imx21 *imx21, struct urb *urb,
+ int status) {}
+static inline void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb) {}
+static inline void debug_urb_queued_for_etd(struct imx21 *imx21,
+ struct urb *urb) {}
+static inline void debug_urb_queued_for_dmem(struct imx21 *imx21,
+ struct urb *urb) {}
+static inline void debug_etd_allocated(struct imx21 *imx21) {}
+static inline void debug_etd_freed(struct imx21 *imx21) {}
+static inline void debug_dmem_allocated(struct imx21 *imx21, int size) {}
+static inline void debug_dmem_freed(struct imx21 *imx21, int size) {}
+static inline void debug_isoc_submitted(struct imx21 *imx21,
+ int frame, struct td *td) {}
+static inline void debug_isoc_completed(struct imx21 *imx21,
+ int frame, struct td *td, int cc, int len) {}
+
+#else
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+static const char *dir_labels[] = {
+ "TD 0",
+ "OUT",
+ "IN",
+ "TD 1"
+};
+
+static const char *speed_labels[] = {
+ "Full",
+ "Low"
+};
+
+static const char *format_labels[] = {
+ "Control",
+ "ISO",
+ "Bulk",
+ "Interrupt"
+};
+
+static inline struct debug_stats *stats_for_urb(struct imx21 *imx21,
+ struct urb *urb)
+{
+ return usb_pipeisoc(urb->pipe) ?
+ &imx21->isoc_stats : &imx21->nonisoc_stats;
+}
+
+static void debug_urb_submitted(struct imx21 *imx21, struct urb *urb)
+{
+ stats_for_urb(imx21, urb)->submitted++;
+}
+
+static void debug_urb_completed(struct imx21 *imx21, struct urb *urb, int st)
+{
+ if (st)
+ stats_for_urb(imx21, urb)->completed_failed++;
+ else
+ stats_for_urb(imx21, urb)->completed_ok++;
+}
+
+static void debug_urb_unlinked(struct imx21 *imx21, struct urb *urb)
+{
+ stats_for_urb(imx21, urb)->unlinked++;
+}
+
+static void debug_urb_queued_for_etd(struct imx21 *imx21, struct urb *urb)
+{
+ stats_for_urb(imx21, urb)->queue_etd++;
+}
+
+static void debug_urb_queued_for_dmem(struct imx21 *imx21, struct urb *urb)
+{
+ stats_for_urb(imx21, urb)->queue_dmem++;
+}
+
+static inline void debug_etd_allocated(struct imx21 *imx21)
+{
+ imx21->etd_usage.maximum = max(
+ ++(imx21->etd_usage.value),
+ imx21->etd_usage.maximum);
+}
+
+static inline void debug_etd_freed(struct imx21 *imx21)
+{
+ imx21->etd_usage.value--;
+}
+
+static inline void debug_dmem_allocated(struct imx21 *imx21, int size)
+{
+ imx21->dmem_usage.value += size;
+ imx21->dmem_usage.maximum = max(
+ imx21->dmem_usage.value,
+ imx21->dmem_usage.maximum);
+}
+
+static inline void debug_dmem_freed(struct imx21 *imx21, int size)
+{
+ imx21->dmem_usage.value -= size;
+}
+
+
+static void debug_isoc_submitted(struct imx21 *imx21,
+ int frame, struct td *td)
+{
+ struct debug_isoc_trace *trace = &imx21->isoc_trace[
+ imx21->isoc_trace_index++];
+
+ imx21->isoc_trace_index %= ARRAY_SIZE(imx21->isoc_trace);
+ trace->schedule_frame = td->frame;
+ trace->submit_frame = frame;
+ trace->request_len = td->len;
+ trace->td = td;
+}
+
+static inline void debug_isoc_completed(struct imx21 *imx21,
+ int frame, struct td *td, int cc, int len)
+{
+ struct debug_isoc_trace *trace, *trace_failed;
+ int i;
+ int found = 0;
+
+ trace = imx21->isoc_trace;
+ for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++) {
+ if (trace->td == td) {
+ trace->done_frame = frame;
+ trace->done_len = len;
+ trace->cc = cc;
+ trace->td = NULL;
+ found = 1;
+ break;
+ }
+ }
+
+ if (found && cc) {
+ trace_failed = &imx21->isoc_trace_failed[
+ imx21->isoc_trace_index_failed++];
+
+ imx21->isoc_trace_index_failed %= ARRAY_SIZE(
+ imx21->isoc_trace_failed);
+ *trace_failed = *trace;
+ }
+}
+
+
+static char *format_ep(struct usb_host_endpoint *ep, char *buf, int bufsize)
+{
+ if (ep)
+ snprintf(buf, bufsize, "ep_%02x (type:%02X kaddr:%p)",
+ ep->desc.bEndpointAddress,
+ usb_endpoint_type(&ep->desc),
+ ep);
+ else
+ snprintf(buf, bufsize, "none");
+ return buf;
+}
+
+static char *format_etd_dword0(u32 value, char *buf, int bufsize)
+{
+ snprintf(buf, bufsize,
+ "addr=%d ep=%d dir=%s speed=%s format=%s halted=%d",
+ value & 0x7F,
+ (value >> DW0_ENDPNT) & 0x0F,
+ dir_labels[(value >> DW0_DIRECT) & 0x03],
+ speed_labels[(value >> DW0_SPEED) & 0x01],
+ format_labels[(value >> DW0_FORMAT) & 0x03],
+ (value >> DW0_HALTED) & 0x01);
+ return buf;
+}
+
+static int debug_status_show(struct seq_file *s, void *v)
+{
+ struct imx21 *imx21 = s->private;
+ int etds_allocated = 0;
+ int etds_sw_busy = 0;
+ int etds_hw_busy = 0;
+ int dmem_blocks = 0;
+ int queued_for_etd = 0;
+ int queued_for_dmem = 0;
+ unsigned int dmem_bytes = 0;
+ int i;
+ struct etd_priv *etd;
+ u32 etd_enable_mask;
+ unsigned long flags;
+ struct imx21_dmem_area *dmem;
+ struct ep_priv *ep_priv;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ etd_enable_mask = readl(imx21->regs + USBH_ETDENSET);
+ for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
+ if (etd->alloc)
+ etds_allocated++;
+ if (etd->urb)
+ etds_sw_busy++;
+ if (etd_enable_mask & (1<<i))
+ etds_hw_busy++;
+ }
+
+ list_for_each_entry(dmem, &imx21->dmem_list, list) {
+ dmem_bytes += dmem->size;
+ dmem_blocks++;
+ }
+
+ list_for_each_entry(ep_priv, &imx21->queue_for_etd, queue)
+ queued_for_etd++;
+
+ list_for_each_entry(etd, &imx21->queue_for_dmem, queue)
+ queued_for_dmem++;
+
+ spin_unlock_irqrestore(&imx21->lock, flags);
+
+ seq_printf(s,
+ "Frame: %d\n"
+ "ETDs allocated: %d/%d (max=%d)\n"
+ "ETDs in use sw: %d\n"
+ "ETDs in use hw: %d\n"
+ "DMEM alocated: %d/%d (max=%d)\n"
+ "DMEM blocks: %d\n"
+ "Queued waiting for ETD: %d\n"
+ "Queued waiting for DMEM: %d\n",
+ readl(imx21->regs + USBH_FRMNUB) & 0xFFFF,
+ etds_allocated, USB_NUM_ETD, imx21->etd_usage.maximum,
+ etds_sw_busy,
+ etds_hw_busy,
+ dmem_bytes, DMEM_SIZE, imx21->dmem_usage.maximum,
+ dmem_blocks,
+ queued_for_etd,
+ queued_for_dmem);
+
+ return 0;
+}
+
+static int debug_dmem_show(struct seq_file *s, void *v)
+{
+ struct imx21 *imx21 = s->private;
+ struct imx21_dmem_area *dmem;
+ unsigned long flags;
+ char ep_text[40];
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ list_for_each_entry(dmem, &imx21->dmem_list, list)
+ seq_printf(s,
+ "%04X: size=0x%X "
+ "ep=%s\n",
+ dmem->offset, dmem->size,
+ format_ep(dmem->ep, ep_text, sizeof(ep_text)));
+
+ spin_unlock_irqrestore(&imx21->lock, flags);
+
+ return 0;
+}
+
+static int debug_etd_show(struct seq_file *s, void *v)
+{
+ struct imx21 *imx21 = s->private;
+ struct etd_priv *etd;
+ char buf[60];
+ u32 dword;
+ int i, j;
+ unsigned long flags;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ for (i = 0, etd = imx21->etd; i < USB_NUM_ETD; i++, etd++) {
+ int state = -1;
+ struct urb_priv *urb_priv;
+ if (etd->urb) {
+ urb_priv = etd->urb->hcpriv;
+ if (urb_priv)
+ state = urb_priv->state;
+ }
+
+ seq_printf(s,
+ "etd_num: %d\n"
+ "ep: %s\n"
+ "alloc: %d\n"
+ "len: %d\n"
+ "busy sw: %d\n"
+ "busy hw: %d\n"
+ "urb state: %d\n"
+ "current urb: %p\n",
+
+ i,
+ format_ep(etd->ep, buf, sizeof(buf)),
+ etd->alloc,
+ etd->len,
+ etd->urb != NULL,
+ (readl(imx21->regs + USBH_ETDENSET) & (1 << i)) > 0,
+ state,
+ etd->urb);
+
+ for (j = 0; j < 4; j++) {
+ dword = etd_readl(imx21, i, j);
+ switch (j) {
+ case 0:
+ format_etd_dword0(dword, buf, sizeof(buf));
+ break;
+ case 2:
+ snprintf(buf, sizeof(buf),
+ "cc=0X%02X", dword >> DW2_COMPCODE);
+ break;
+ default:
+ *buf = 0;
+ break;
+ }
+ seq_printf(s,
+ "dword %d: submitted=%08X cur=%08X [%s]\n",
+ j,
+ etd->submitted_dwords[j],
+ dword,
+ buf);
+ }
+ seq_printf(s, "\n");
+ }
+
+ spin_unlock_irqrestore(&imx21->lock, flags);
+
+ return 0;
+}
+
+static void debug_statistics_show_one(struct seq_file *s,
+ const char *name, struct debug_stats *stats)
+{
+ seq_printf(s, "%s:\n"
+ "submitted URBs: %lu\n"
+ "completed OK: %lu\n"
+ "completed failed: %lu\n"
+ "unlinked: %lu\n"
+ "queued for ETD: %lu\n"
+ "queued for DMEM: %lu\n\n",
+ name,
+ stats->submitted,
+ stats->completed_ok,
+ stats->completed_failed,
+ stats->unlinked,
+ stats->queue_etd,
+ stats->queue_dmem);
+}
+
+static int debug_statistics_show(struct seq_file *s, void *v)
+{
+ struct imx21 *imx21 = s->private;
+ unsigned long flags;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ debug_statistics_show_one(s, "nonisoc", &imx21->nonisoc_stats);
+ debug_statistics_show_one(s, "isoc", &imx21->isoc_stats);
+ seq_printf(s, "unblock kludge triggers: %lu\n", imx21->debug_unblocks);
+ spin_unlock_irqrestore(&imx21->lock, flags);
+
+ return 0;
+}
+
+static void debug_isoc_show_one(struct seq_file *s,
+ const char *name, int index, struct debug_isoc_trace *trace)
+{
+ seq_printf(s, "%s %d:\n"
+ "cc=0X%02X\n"
+ "scheduled frame %d (%d)\n"
+ "submittted frame %d (%d)\n"
+ "completed frame %d (%d)\n"
+ "requested length=%d\n"
+ "completed length=%d\n\n",
+ name, index,
+ trace->cc,
+ trace->schedule_frame, trace->schedule_frame & 0xFFFF,
+ trace->submit_frame, trace->submit_frame & 0xFFFF,
+ trace->done_frame, trace->done_frame & 0xFFFF,
+ trace->request_len,
+ trace->done_len);
+}
+
+static int debug_isoc_show(struct seq_file *s, void *v)
+{
+ struct imx21 *imx21 = s->private;
+ struct debug_isoc_trace *trace;
+ unsigned long flags;
+ int i;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ trace = imx21->isoc_trace_failed;
+ for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace_failed); i++, trace++)
+ debug_isoc_show_one(s, "isoc failed", i, trace);
+
+ trace = imx21->isoc_trace;
+ for (i = 0; i < ARRAY_SIZE(imx21->isoc_trace); i++, trace++)
+ debug_isoc_show_one(s, "isoc", i, trace);
+
+ spin_unlock_irqrestore(&imx21->lock, flags);
+
+ return 0;
+}
+
+static int debug_status_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debug_status_show, inode->i_private);
+}
+
+static int debug_dmem_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debug_dmem_show, inode->i_private);
+}
+
+static int debug_etd_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debug_etd_show, inode->i_private);
+}
+
+static int debug_statistics_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debug_statistics_show, inode->i_private);
+}
+
+static int debug_isoc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, debug_isoc_show, inode->i_private);
+}
+
+static const struct file_operations debug_status_fops = {
+ .open = debug_status_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations debug_dmem_fops = {
+ .open = debug_dmem_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations debug_etd_fops = {
+ .open = debug_etd_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations debug_statistics_fops = {
+ .open = debug_statistics_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static const struct file_operations debug_isoc_fops = {
+ .open = debug_isoc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static void create_debug_files(struct imx21 *imx21)
+{
+ imx21->debug_root = debugfs_create_dir(dev_name(imx21->dev), NULL);
+ if (!imx21->debug_root)
+ goto failed_create_rootdir;
+
+ if (!debugfs_create_file("status", S_IRUGO,
+ imx21->debug_root, imx21, &debug_status_fops))
+ goto failed_create;
+
+ if (!debugfs_create_file("dmem", S_IRUGO,
+ imx21->debug_root, imx21, &debug_dmem_fops))
+ goto failed_create;
+
+ if (!debugfs_create_file("etd", S_IRUGO,
+ imx21->debug_root, imx21, &debug_etd_fops))
+ goto failed_create;
+
+ if (!debugfs_create_file("statistics", S_IRUGO,
+ imx21->debug_root, imx21, &debug_statistics_fops))
+ goto failed_create;
+
+ if (!debugfs_create_file("isoc", S_IRUGO,
+ imx21->debug_root, imx21, &debug_isoc_fops))
+ goto failed_create;
+
+ return;
+
+failed_create:
+ debugfs_remove_recursive(imx21->debug_root);
+
+failed_create_rootdir:
+ imx21->debug_root = NULL;
+}
+
+
+static void remove_debug_files(struct imx21 *imx21)
+{
+ if (imx21->debug_root) {
+ debugfs_remove_recursive(imx21->debug_root);
+ imx21->debug_root = NULL;
+ }
+}
+
+#endif
+
diff --git a/drivers/usb/host/imx21-hcd.c b/drivers/usb/host/imx21-hcd.c
new file mode 100644
index 000000000000..213e270e1c29
--- /dev/null
+++ b/drivers/usb/host/imx21-hcd.c
@@ -0,0 +1,1789 @@
+/*
+ * USB Host Controller Driver for IMX21
+ *
+ * Copyright (C) 2006 Loping Dog Embedded Systems
+ * Copyright (C) 2009 Martin Fuzzey
+ * Originally written by Jay Monkman <jtm@lopingdog.com>
+ * Ported to 2.6.30, debugged and enhanced by Martin Fuzzey
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+ /*
+ * The i.MX21 USB hardware contains
+ * * 32 transfer descriptors (called ETDs)
+ * * 4Kb of Data memory
+ *
+ * The data memory is shared between the host and fuction controlers
+ * (but this driver only supports the host controler)
+ *
+ * So setting up a transfer involves:
+ * * Allocating a ETD
+ * * Fill in ETD with appropriate information
+ * * Allocating data memory (and putting the offset in the ETD)
+ * * Activate the ETD
+ * * Get interrupt when done.
+ *
+ * An ETD is assigned to each active endpoint.
+ *
+ * Low resource (ETD and Data memory) situations are handled differently for
+ * isochronous and non insosynchronous transactions :
+ *
+ * Non ISOC transfers are queued if either ETDs or Data memory are unavailable
+ *
+ * ISOC transfers use 2 ETDs per endpoint to achieve double buffering.
+ * They allocate both ETDs and Data memory during URB submission
+ * (and fail if unavailable).
+ */
+
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/platform_device.h>
+#include <linux/usb.h>
+
+#include "../core/hcd.h"
+#include "imx21-hcd.h"
+
+#ifdef DEBUG
+#define DEBUG_LOG_FRAME(imx21, etd, event) \
+ (etd)->event##_frame = readl((imx21)->regs + USBH_FRMNUB)
+#else
+#define DEBUG_LOG_FRAME(imx21, etd, event) do { } while (0)
+#endif
+
+static const char hcd_name[] = "imx21-hcd";
+
+static inline struct imx21 *hcd_to_imx21(struct usb_hcd *hcd)
+{
+ return (struct imx21 *)hcd->hcd_priv;
+}
+
+
+/* =========================================== */
+/* Hardware access helpers */
+/* =========================================== */
+
+static inline void set_register_bits(struct imx21 *imx21, u32 offset, u32 mask)
+{
+ void __iomem *reg = imx21->regs + offset;
+ writel(readl(reg) | mask, reg);
+}
+
+static inline void clear_register_bits(struct imx21 *imx21,
+ u32 offset, u32 mask)
+{
+ void __iomem *reg = imx21->regs + offset;
+ writel(readl(reg) & ~mask, reg);
+}
+
+static inline void clear_toggle_bit(struct imx21 *imx21, u32 offset, u32 mask)
+{
+ void __iomem *reg = imx21->regs + offset;
+
+ if (readl(reg) & mask)
+ writel(mask, reg);
+}
+
+static inline void set_toggle_bit(struct imx21 *imx21, u32 offset, u32 mask)
+{
+ void __iomem *reg = imx21->regs + offset;
+
+ if (!(readl(reg) & mask))
+ writel(mask, reg);
+}
+
+static void etd_writel(struct imx21 *imx21, int etd_num, int dword, u32 value)
+{
+ writel(value, imx21->regs + USB_ETD_DWORD(etd_num, dword));
+}
+
+static u32 etd_readl(struct imx21 *imx21, int etd_num, int dword)
+{
+ return readl(imx21->regs + USB_ETD_DWORD(etd_num, dword));
+}
+
+static inline int wrap_frame(int counter)
+{
+ return counter & 0xFFFF;
+}
+
+static inline int frame_after(int frame, int after)
+{
+ /* handle wrapping like jiffies time_afer */
+ return (s16)((s16)after - (s16)frame) < 0;
+}
+
+static int imx21_hc_get_frame(struct usb_hcd *hcd)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+
+ return wrap_frame(readl(imx21->regs + USBH_FRMNUB));
+}
+
+
+#include "imx21-dbg.c"
+
+/* =========================================== */
+/* ETD management */
+/* =========================================== */
+
+static int alloc_etd(struct imx21 *imx21)
+{
+ int i;
+ struct etd_priv *etd = imx21->etd;
+
+ for (i = 0; i < USB_NUM_ETD; i++, etd++) {
+ if (etd->alloc == 0) {
+ memset(etd, 0, sizeof(imx21->etd[0]));
+ etd->alloc = 1;
+ debug_etd_allocated(imx21);
+ return i;
+ }
+ }
+ return -1;
+}
+
+static void disactivate_etd(struct imx21 *imx21, int num)
+{
+ int etd_mask = (1 << num);
+ struct etd_priv *etd = &imx21->etd[num];
+
+ writel(etd_mask, imx21->regs + USBH_ETDENCLR);
+ clear_register_bits(imx21, USBH_ETDDONEEN, etd_mask);
+ writel(etd_mask, imx21->regs + USB_ETDDMACHANLCLR);
+ clear_toggle_bit(imx21, USBH_ETDDONESTAT, etd_mask);
+
+ etd->active_count = 0;
+
+ DEBUG_LOG_FRAME(imx21, etd, disactivated);
+}
+
+static void reset_etd(struct imx21 *imx21, int num)
+{
+ struct etd_priv *etd = imx21->etd + num;
+ int i;
+
+ disactivate_etd(imx21, num);
+
+ for (i = 0; i < 4; i++)
+ etd_writel(imx21, num, i, 0);
+ etd->urb = NULL;
+ etd->ep = NULL;
+ etd->td = NULL;;
+}
+
+static void free_etd(struct imx21 *imx21, int num)
+{
+ if (num < 0)
+ return;
+
+ if (num >= USB_NUM_ETD) {
+ dev_err(imx21->dev, "BAD etd=%d!\n", num);
+ return;
+ }
+ if (imx21->etd[num].alloc == 0) {
+ dev_err(imx21->dev, "ETD %d already free!\n", num);
+ return;
+ }
+
+ debug_etd_freed(imx21);
+ reset_etd(imx21, num);
+ memset(&imx21->etd[num], 0, sizeof(imx21->etd[0]));
+}
+
+
+static void setup_etd_dword0(struct imx21 *imx21,
+ int etd_num, struct urb *urb, u8 dir, u16 maxpacket)
+{
+ etd_writel(imx21, etd_num, 0,
+ ((u32) usb_pipedevice(urb->pipe)) << DW0_ADDRESS |
+ ((u32) usb_pipeendpoint(urb->pipe) << DW0_ENDPNT) |
+ ((u32) dir << DW0_DIRECT) |
+ ((u32) ((urb->dev->speed == USB_SPEED_LOW) ?
+ 1 : 0) << DW0_SPEED) |
+ ((u32) fmt_urb_to_etd[usb_pipetype(urb->pipe)] << DW0_FORMAT) |
+ ((u32) maxpacket << DW0_MAXPKTSIZ));
+}
+
+static void activate_etd(struct imx21 *imx21,
+ int etd_num, dma_addr_t dma, u8 dir)
+{
+ u32 etd_mask = 1 << etd_num;
+ struct etd_priv *etd = &imx21->etd[etd_num];
+
+ clear_toggle_bit(imx21, USBH_ETDDONESTAT, etd_mask);
+ set_register_bits(imx21, USBH_ETDDONEEN, etd_mask);
+ clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
+ clear_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
+
+ if (dma) {
+ set_register_bits(imx21, USB_ETDDMACHANLCLR, etd_mask);
+ clear_toggle_bit(imx21, USBH_XBUFSTAT, etd_mask);
+ clear_toggle_bit(imx21, USBH_YBUFSTAT, etd_mask);
+ writel(dma, imx21->regs + USB_ETDSMSA(etd_num));
+ set_register_bits(imx21, USB_ETDDMAEN, etd_mask);
+ } else {
+ if (dir != TD_DIR_IN) {
+ /* need to set for ZLP */
+ set_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
+ set_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
+ }
+ }
+
+ DEBUG_LOG_FRAME(imx21, etd, activated);
+
+#ifdef DEBUG
+ if (!etd->active_count) {
+ int i;
+ etd->activated_frame = readl(imx21->regs + USBH_FRMNUB);
+ etd->disactivated_frame = -1;
+ etd->last_int_frame = -1;
+ etd->last_req_frame = -1;
+
+ for (i = 0; i < 4; i++)
+ etd->submitted_dwords[i] = etd_readl(imx21, etd_num, i);
+ }
+#endif
+
+ etd->active_count = 1;
+ writel(etd_mask, imx21->regs + USBH_ETDENSET);
+}
+
+/* =========================================== */
+/* Data memory management */
+/* =========================================== */
+
+static int alloc_dmem(struct imx21 *imx21, unsigned int size,
+ struct usb_host_endpoint *ep)
+{
+ unsigned int offset = 0;
+ struct imx21_dmem_area *area;
+ struct imx21_dmem_area *tmp;
+
+ size += (~size + 1) & 0x3; /* Round to 4 byte multiple */
+
+ if (size > DMEM_SIZE) {
+ dev_err(imx21->dev, "size=%d > DMEM_SIZE(%d)\n",
+ size, DMEM_SIZE);
+ return -EINVAL;
+ }
+
+ list_for_each_entry(tmp, &imx21->dmem_list, list) {
+ if ((size + offset) < offset)
+ goto fail;
+ if ((size + offset) <= tmp->offset)
+ break;
+ offset = tmp->size + tmp->offset;
+ if ((offset + size) > DMEM_SIZE)
+ goto fail;
+ }
+
+ area = kmalloc(sizeof(struct imx21_dmem_area), GFP_ATOMIC);
+ if (area == NULL)
+ return -ENOMEM;
+
+ area->ep = ep;
+ area->offset = offset;
+ area->size = size;
+ list_add_tail(&area->list, &tmp->list);
+ debug_dmem_allocated(imx21, size);
+ return offset;
+
+fail:
+ return -ENOMEM;
+}
+
+/* Memory now available for a queued ETD - activate it */
+static void activate_queued_etd(struct imx21 *imx21,
+ struct etd_priv *etd, u32 dmem_offset)
+{
+ struct urb_priv *urb_priv = etd->urb->hcpriv;
+ int etd_num = etd - &imx21->etd[0];
+ u32 maxpacket = etd_readl(imx21, etd_num, 1) >> DW1_YBUFSRTAD;
+ u8 dir = (etd_readl(imx21, etd_num, 2) >> DW2_DIRPID) & 0x03;
+
+ dev_dbg(imx21->dev, "activating queued ETD %d now DMEM available\n",
+ etd_num);
+ etd_writel(imx21, etd_num, 1,
+ ((dmem_offset + maxpacket) << DW1_YBUFSRTAD) | dmem_offset);
+
+ urb_priv->active = 1;
+ activate_etd(imx21, etd_num, etd->dma_handle, dir);
+}
+
+static void free_dmem(struct imx21 *imx21, int offset)
+{
+ struct imx21_dmem_area *area;
+ struct etd_priv *etd, *tmp;
+ int found = 0;
+
+ list_for_each_entry(area, &imx21->dmem_list, list) {
+ if (area->offset == offset) {
+ debug_dmem_freed(imx21, area->size);
+ list_del(&area->list);
+ kfree(area);
+ found = 1;
+ break;
+ }
+ }
+
+ if (!found) {
+ dev_err(imx21->dev,
+ "Trying to free unallocated DMEM %d\n", offset);
+ return;
+ }
+
+ /* Try again to allocate memory for anything we've queued */
+ list_for_each_entry_safe(etd, tmp, &imx21->queue_for_dmem, queue) {
+ offset = alloc_dmem(imx21, etd->dmem_size, etd->ep);
+ if (offset >= 0) {
+ list_del(&etd->queue);
+ activate_queued_etd(imx21, etd, (u32)offset);
+ }
+ }
+}
+
+static void free_epdmem(struct imx21 *imx21, struct usb_host_endpoint *ep)
+{
+ struct imx21_dmem_area *area, *tmp;
+
+ list_for_each_entry_safe(area, tmp, &imx21->dmem_list, list) {
+ if (area->ep == ep) {
+ dev_err(imx21->dev,
+ "Active DMEM %d for disabled ep=%p\n",
+ area->offset, ep);
+ list_del(&area->list);
+ kfree(area);
+ }
+ }
+}
+
+
+/* =========================================== */
+/* End handling */
+/* =========================================== */
+static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb);
+
+/* Endpoint now idle - release it's ETD(s) or asssign to queued request */
+static void ep_idle(struct imx21 *imx21, struct ep_priv *ep_priv)
+{
+ int etd_num;
+ int i;
+
+ for (i = 0; i < NUM_ISO_ETDS; i++) {
+ etd_num = ep_priv->etd[i];
+ if (etd_num < 0)
+ continue;
+
+ ep_priv->etd[i] = -1;
+ if (list_empty(&imx21->queue_for_etd)) {
+ free_etd(imx21, etd_num);
+ continue;
+ }
+
+ dev_dbg(imx21->dev,
+ "assigning idle etd %d for queued request\n", etd_num);
+ ep_priv = list_first_entry(&imx21->queue_for_etd,
+ struct ep_priv, queue);
+ list_del(&ep_priv->queue);
+ reset_etd(imx21, etd_num);
+ ep_priv->waiting_etd = 0;
+ ep_priv->etd[i] = etd_num;
+
+ if (list_empty(&ep_priv->ep->urb_list)) {
+ dev_err(imx21->dev, "No urb for queued ep!\n");
+ continue;
+ }
+ schedule_nonisoc_etd(imx21, list_first_entry(
+ &ep_priv->ep->urb_list, struct urb, urb_list));
+ }
+}
+
+static void urb_done(struct usb_hcd *hcd, struct urb *urb, int status)
+__releases(imx21->lock)
+__acquires(imx21->lock)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ struct ep_priv *ep_priv = urb->ep->hcpriv;
+ struct urb_priv *urb_priv = urb->hcpriv;
+
+ debug_urb_completed(imx21, urb, status);
+ dev_vdbg(imx21->dev, "urb %p done %d\n", urb, status);
+
+ kfree(urb_priv->isoc_td);
+ kfree(urb->hcpriv);
+ urb->hcpriv = NULL;
+ usb_hcd_unlink_urb_from_ep(hcd, urb);
+ spin_unlock(&imx21->lock);
+ usb_hcd_giveback_urb(hcd, urb, status);
+ spin_lock(&imx21->lock);
+ if (list_empty(&ep_priv->ep->urb_list))
+ ep_idle(imx21, ep_priv);
+}
+
+/* =========================================== */
+/* ISOC Handling ... */
+/* =========================================== */
+
+static void schedule_isoc_etds(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ struct ep_priv *ep_priv = ep->hcpriv;
+ struct etd_priv *etd;
+ struct urb_priv *urb_priv;
+ struct td *td;
+ int etd_num;
+ int i;
+ int cur_frame;
+ u8 dir;
+
+ for (i = 0; i < NUM_ISO_ETDS; i++) {
+too_late:
+ if (list_empty(&ep_priv->td_list))
+ break;
+
+ etd_num = ep_priv->etd[i];
+ if (etd_num < 0)
+ break;
+
+ etd = &imx21->etd[etd_num];
+ if (etd->urb)
+ continue;
+
+ td = list_entry(ep_priv->td_list.next, struct td, list);
+ list_del(&td->list);
+ urb_priv = td->urb->hcpriv;
+
+ cur_frame = imx21_hc_get_frame(hcd);
+ if (frame_after(cur_frame, td->frame)) {
+ dev_dbg(imx21->dev, "isoc too late frame %d > %d\n",
+ cur_frame, td->frame);
+ urb_priv->isoc_status = -EXDEV;
+ td->urb->iso_frame_desc[
+ td->isoc_index].actual_length = 0;
+ td->urb->iso_frame_desc[td->isoc_index].status = -EXDEV;
+ if (--urb_priv->isoc_remaining == 0)
+ urb_done(hcd, td->urb, urb_priv->isoc_status);
+ goto too_late;
+ }
+
+ urb_priv->active = 1;
+ etd->td = td;
+ etd->ep = td->ep;
+ etd->urb = td->urb;
+ etd->len = td->len;
+
+ debug_isoc_submitted(imx21, cur_frame, td);
+
+ dir = usb_pipeout(td->urb->pipe) ? TD_DIR_OUT : TD_DIR_IN;
+ setup_etd_dword0(imx21, etd_num, td->urb, dir, etd->dmem_size);
+ etd_writel(imx21, etd_num, 1, etd->dmem_offset);
+ etd_writel(imx21, etd_num, 2,
+ (TD_NOTACCESSED << DW2_COMPCODE) |
+ ((td->frame & 0xFFFF) << DW2_STARTFRM));
+ etd_writel(imx21, etd_num, 3,
+ (TD_NOTACCESSED << DW3_COMPCODE0) |
+ (td->len << DW3_PKTLEN0));
+
+ activate_etd(imx21, etd_num, td->data, dir);
+ }
+}
+
+static void isoc_etd_done(struct usb_hcd *hcd, struct urb *urb, int etd_num)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ int etd_mask = 1 << etd_num;
+ struct urb_priv *urb_priv = urb->hcpriv;
+ struct etd_priv *etd = imx21->etd + etd_num;
+ struct td *td = etd->td;
+ struct usb_host_endpoint *ep = etd->ep;
+ int isoc_index = td->isoc_index;
+ unsigned int pipe = urb->pipe;
+ int dir_in = usb_pipein(pipe);
+ int cc;
+ int bytes_xfrd;
+
+ disactivate_etd(imx21, etd_num);
+
+ cc = (etd_readl(imx21, etd_num, 3) >> DW3_COMPCODE0) & 0xf;
+ bytes_xfrd = etd_readl(imx21, etd_num, 3) & 0x3ff;
+
+ /* Input doesn't always fill the buffer, don't generate an error
+ * when this happens.
+ */
+ if (dir_in && (cc == TD_DATAUNDERRUN))
+ cc = TD_CC_NOERROR;
+
+ if (cc == TD_NOTACCESSED)
+ bytes_xfrd = 0;
+
+ debug_isoc_completed(imx21,
+ imx21_hc_get_frame(hcd), td, cc, bytes_xfrd);
+ if (cc) {
+ urb_priv->isoc_status = -EXDEV;
+ dev_dbg(imx21->dev,
+ "bad iso cc=0x%X frame=%d sched frame=%d "
+ "cnt=%d len=%d urb=%p etd=%d index=%d\n",
+ cc, imx21_hc_get_frame(hcd), td->frame,
+ bytes_xfrd, td->len, urb, etd_num, isoc_index);
+ }
+
+ if (dir_in)
+ clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
+
+ urb->actual_length += bytes_xfrd;
+ urb->iso_frame_desc[isoc_index].actual_length = bytes_xfrd;
+ urb->iso_frame_desc[isoc_index].status = cc_to_error[cc];
+
+ etd->td = NULL;
+ etd->urb = NULL;
+ etd->ep = NULL;
+
+ if (--urb_priv->isoc_remaining == 0)
+ urb_done(hcd, urb, urb_priv->isoc_status);
+
+ schedule_isoc_etds(hcd, ep);
+}
+
+static struct ep_priv *alloc_isoc_ep(
+ struct imx21 *imx21, struct usb_host_endpoint *ep)
+{
+ struct ep_priv *ep_priv;
+ int i;
+
+ ep_priv = kzalloc(sizeof(struct ep_priv), GFP_ATOMIC);
+ if (ep_priv == NULL)
+ return NULL;
+
+ /* Allocate the ETDs */
+ for (i = 0; i < NUM_ISO_ETDS; i++) {
+ ep_priv->etd[i] = alloc_etd(imx21);
+ if (ep_priv->etd[i] < 0) {
+ int j;
+ dev_err(imx21->dev, "isoc: Couldn't allocate etd\n");
+ for (j = 0; j < i; j++)
+ free_etd(imx21, ep_priv->etd[j]);
+ goto alloc_etd_failed;
+ }
+ imx21->etd[ep_priv->etd[i]].ep = ep;
+ }
+
+ INIT_LIST_HEAD(&ep_priv->td_list);
+ ep_priv->ep = ep;
+ ep->hcpriv = ep_priv;
+ return ep_priv;
+
+alloc_etd_failed:
+ kfree(ep_priv);
+ return NULL;
+}
+
+static int imx21_hc_urb_enqueue_isoc(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep,
+ struct urb *urb, gfp_t mem_flags)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ struct urb_priv *urb_priv;
+ unsigned long flags;
+ struct ep_priv *ep_priv;
+ struct td *td = NULL;
+ int i;
+ int ret;
+ int cur_frame;
+ u16 maxpacket;
+
+ urb_priv = kzalloc(sizeof(struct urb_priv), mem_flags);
+ if (urb_priv == NULL)
+ return -ENOMEM;
+
+ urb_priv->isoc_td = kzalloc(
+ sizeof(struct td) * urb->number_of_packets, mem_flags);
+ if (urb_priv->isoc_td == NULL) {
+ ret = -ENOMEM;
+ goto alloc_td_failed;
+ }
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ if (ep->hcpriv == NULL) {
+ ep_priv = alloc_isoc_ep(imx21, ep);
+ if (ep_priv == NULL) {
+ ret = -ENOMEM;
+ goto alloc_ep_failed;
+ }
+ } else {
+ ep_priv = ep->hcpriv;
+ }
+
+ ret = usb_hcd_link_urb_to_ep(hcd, urb);
+ if (ret)
+ goto link_failed;
+
+ urb->status = -EINPROGRESS;
+ urb->actual_length = 0;
+ urb->error_count = 0;
+ urb->hcpriv = urb_priv;
+ urb_priv->ep = ep;
+
+ /* allocate data memory for largest packets if not already done */
+ maxpacket = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
+ for (i = 0; i < NUM_ISO_ETDS; i++) {
+ struct etd_priv *etd = &imx21->etd[ep_priv->etd[i]];
+
+ if (etd->dmem_size > 0 && etd->dmem_size < maxpacket) {
+ /* not sure if this can really occur.... */
+ dev_err(imx21->dev, "increasing isoc buffer %d->%d\n",
+ etd->dmem_size, maxpacket);
+ ret = -EMSGSIZE;
+ goto alloc_dmem_failed;
+ }
+
+ if (etd->dmem_size == 0) {
+ etd->dmem_offset = alloc_dmem(imx21, maxpacket, ep);
+ if (etd->dmem_offset < 0) {
+ dev_dbg(imx21->dev, "failed alloc isoc dmem\n");
+ ret = -EAGAIN;
+ goto alloc_dmem_failed;
+ }
+ etd->dmem_size = maxpacket;
+ }
+ }
+
+ /* calculate frame */
+ cur_frame = imx21_hc_get_frame(hcd);
+ if (urb->transfer_flags & URB_ISO_ASAP) {
+ if (list_empty(&ep_priv->td_list))
+ urb->start_frame = cur_frame + 5;
+ else
+ urb->start_frame = list_entry(
+ ep_priv->td_list.prev,
+ struct td, list)->frame + urb->interval;
+ }
+ urb->start_frame = wrap_frame(urb->start_frame);
+ if (frame_after(cur_frame, urb->start_frame)) {
+ dev_dbg(imx21->dev,
+ "enqueue: adjusting iso start %d (cur=%d) asap=%d\n",
+ urb->start_frame, cur_frame,
+ (urb->transfer_flags & URB_ISO_ASAP) != 0);
+ urb->start_frame = wrap_frame(cur_frame + 1);
+ }
+
+ /* set up transfers */
+ td = urb_priv->isoc_td;
+ for (i = 0; i < urb->number_of_packets; i++, td++) {
+ td->ep = ep;
+ td->urb = urb;
+ td->len = urb->iso_frame_desc[i].length;
+ td->isoc_index = i;
+ td->frame = wrap_frame(urb->start_frame + urb->interval * i);
+ td->data = urb->transfer_dma + urb->iso_frame_desc[i].offset;
+ list_add_tail(&td->list, &ep_priv->td_list);
+ }
+
+ urb_priv->isoc_remaining = urb->number_of_packets;
+ dev_vdbg(imx21->dev, "setup %d packets for iso frame %d->%d\n",
+ urb->number_of_packets, urb->start_frame, td->frame);
+
+ debug_urb_submitted(imx21, urb);
+ schedule_isoc_etds(hcd, ep);
+
+ spin_unlock_irqrestore(&imx21->lock, flags);
+ return 0;
+
+alloc_dmem_failed:
+ usb_hcd_unlink_urb_from_ep(hcd, urb);
+
+link_failed:
+alloc_ep_failed:
+ spin_unlock_irqrestore(&imx21->lock, flags);
+ kfree(urb_priv->isoc_td);
+
+alloc_td_failed:
+ kfree(urb_priv);
+ return ret;
+}
+
+static void dequeue_isoc_urb(struct imx21 *imx21,
+ struct urb *urb, struct ep_priv *ep_priv)
+{
+ struct urb_priv *urb_priv = urb->hcpriv;
+ struct td *td, *tmp;
+ int i;
+
+ if (urb_priv->active) {
+ for (i = 0; i < NUM_ISO_ETDS; i++) {
+ int etd_num = ep_priv->etd[i];
+ if (etd_num != -1 && imx21->etd[etd_num].urb == urb) {
+ struct etd_priv *etd = imx21->etd + etd_num;
+
+ reset_etd(imx21, etd_num);
+ if (etd->dmem_size)
+ free_dmem(imx21, etd->dmem_offset);
+ etd->dmem_size = 0;
+ }
+ }
+ }
+
+ list_for_each_entry_safe(td, tmp, &ep_priv->td_list, list) {
+ if (td->urb == urb) {
+ dev_vdbg(imx21->dev, "removing td %p\n", td);
+ list_del(&td->list);
+ }
+ }
+}
+
+/* =========================================== */
+/* NON ISOC Handling ... */
+/* =========================================== */
+
+static void schedule_nonisoc_etd(struct imx21 *imx21, struct urb *urb)
+{
+ unsigned int pipe = urb->pipe;
+ struct urb_priv *urb_priv = urb->hcpriv;
+ struct ep_priv *ep_priv = urb_priv->ep->hcpriv;
+ int state = urb_priv->state;
+ int etd_num = ep_priv->etd[0];
+ struct etd_priv *etd;
+ int dmem_offset;
+ u32 count;
+ u16 etd_buf_size;
+ u16 maxpacket;
+ u8 dir;
+ u8 bufround;
+ u8 datatoggle;
+ u8 interval = 0;
+ u8 relpolpos = 0;
+
+ if (etd_num < 0) {
+ dev_err(imx21->dev, "No valid ETD\n");
+ return;
+ }
+ if (readl(imx21->regs + USBH_ETDENSET) & (1 << etd_num))
+ dev_err(imx21->dev, "submitting to active ETD %d\n", etd_num);
+
+ etd = &imx21->etd[etd_num];
+ maxpacket = usb_maxpacket(urb->dev, pipe, usb_pipeout(pipe));
+ if (!maxpacket)
+ maxpacket = 8;
+
+ if (usb_pipecontrol(pipe) && (state != US_CTRL_DATA)) {
+ if (state == US_CTRL_SETUP) {
+ dir = TD_DIR_SETUP;
+ etd->dma_handle = urb->setup_dma;
+ bufround = 0;
+ count = 8;
+ datatoggle = TD_TOGGLE_DATA0;
+ } else { /* US_CTRL_ACK */
+ dir = usb_pipeout(pipe) ? TD_DIR_IN : TD_DIR_OUT;
+ etd->dma_handle = urb->transfer_dma;
+ bufround = 0;
+ count = 0;
+ datatoggle = TD_TOGGLE_DATA1;
+ }
+ } else {
+ dir = usb_pipeout(pipe) ? TD_DIR_OUT : TD_DIR_IN;
+ bufround = (dir == TD_DIR_IN) ? 1 : 0;
+ etd->dma_handle = urb->transfer_dma;
+ if (usb_pipebulk(pipe) && (state == US_BULK0))
+ count = 0;
+ else
+ count = urb->transfer_buffer_length;
+
+ if (usb_pipecontrol(pipe)) {
+ datatoggle = TD_TOGGLE_DATA1;
+ } else {
+ if (usb_gettoggle(
+ urb->dev,
+ usb_pipeendpoint(urb->pipe),
+ usb_pipeout(urb->pipe)))
+ datatoggle = TD_TOGGLE_DATA1;
+ else
+ datatoggle = TD_TOGGLE_DATA0;
+ }
+ }
+
+ etd->urb = urb;
+ etd->ep = urb_priv->ep;
+ etd->len = count;
+
+ if (usb_pipeint(pipe)) {
+ interval = urb->interval;
+ relpolpos = (readl(imx21->regs + USBH_FRMNUB) + 1) & 0xff;
+ }
+
+ /* Write ETD to device memory */
+ setup_etd_dword0(imx21, etd_num, urb, dir, maxpacket);
+
+ etd_writel(imx21, etd_num, 2,
+ (u32) interval << DW2_POLINTERV |
+ ((u32) relpolpos << DW2_RELPOLPOS) |
+ ((u32) dir << DW2_DIRPID) |
+ ((u32) bufround << DW2_BUFROUND) |
+ ((u32) datatoggle << DW2_DATATOG) |
+ ((u32) TD_NOTACCESSED << DW2_COMPCODE));
+
+ /* DMA will always transfer buffer size even if TOBYCNT in DWORD3
+ is smaller. Make sure we don't overrun the buffer!
+ */
+ if (count && count < maxpacket)
+ etd_buf_size = count;
+ else
+ etd_buf_size = maxpacket;
+
+ etd_writel(imx21, etd_num, 3,
+ ((u32) (etd_buf_size - 1) << DW3_BUFSIZE) | (u32) count);
+
+ if (!count)
+ etd->dma_handle = 0;
+
+ /* allocate x and y buffer space at once */
+ etd->dmem_size = (count > maxpacket) ? maxpacket * 2 : maxpacket;
+ dmem_offset = alloc_dmem(imx21, etd->dmem_size, urb_priv->ep);
+ if (dmem_offset < 0) {
+ /* Setup everything we can in HW and update when we get DMEM */
+ etd_writel(imx21, etd_num, 1, (u32)maxpacket << 16);
+
+ dev_dbg(imx21->dev, "Queuing etd %d for DMEM\n", etd_num);
+ debug_urb_queued_for_dmem(imx21, urb);
+ list_add_tail(&etd->queue, &imx21->queue_for_dmem);
+ return;
+ }
+
+ etd_writel(imx21, etd_num, 1,
+ (((u32) dmem_offset + (u32) maxpacket) << DW1_YBUFSRTAD) |
+ (u32) dmem_offset);
+
+ urb_priv->active = 1;
+
+ /* enable the ETD to kick off transfer */
+ dev_vdbg(imx21->dev, "Activating etd %d for %d bytes %s\n",
+ etd_num, count, dir != TD_DIR_IN ? "out" : "in");
+ activate_etd(imx21, etd_num, etd->dma_handle, dir);
+
+}
+
+static void nonisoc_etd_done(struct usb_hcd *hcd, struct urb *urb, int etd_num)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ struct etd_priv *etd = &imx21->etd[etd_num];
+ u32 etd_mask = 1 << etd_num;
+ struct urb_priv *urb_priv = urb->hcpriv;
+ int dir;
+ u16 xbufaddr;
+ int cc;
+ u32 bytes_xfrd;
+ int etd_done;
+
+ disactivate_etd(imx21, etd_num);
+
+ dir = (etd_readl(imx21, etd_num, 0) >> DW0_DIRECT) & 0x3;
+ xbufaddr = etd_readl(imx21, etd_num, 1) & 0xffff;
+ cc = (etd_readl(imx21, etd_num, 2) >> DW2_COMPCODE) & 0xf;
+ bytes_xfrd = etd->len - (etd_readl(imx21, etd_num, 3) & 0x1fffff);
+
+ /* save toggle carry */
+ usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
+ usb_pipeout(urb->pipe),
+ (etd_readl(imx21, etd_num, 0) >> DW0_TOGCRY) & 0x1);
+
+ if (dir == TD_DIR_IN) {
+ clear_toggle_bit(imx21, USBH_XFILLSTAT, etd_mask);
+ clear_toggle_bit(imx21, USBH_YFILLSTAT, etd_mask);
+ }
+ free_dmem(imx21, xbufaddr);
+
+ urb->error_count = 0;
+ if (!(urb->transfer_flags & URB_SHORT_NOT_OK)
+ && (cc == TD_DATAUNDERRUN))
+ cc = TD_CC_NOERROR;
+
+ if (cc != 0)
+ dev_vdbg(imx21->dev, "cc is 0x%x\n", cc);
+
+ etd_done = (cc_to_error[cc] != 0); /* stop if error */
+
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_CONTROL:
+ switch (urb_priv->state) {
+ case US_CTRL_SETUP:
+ if (urb->transfer_buffer_length > 0)
+ urb_priv->state = US_CTRL_DATA;
+ else
+ urb_priv->state = US_CTRL_ACK;
+ break;
+ case US_CTRL_DATA:
+ urb->actual_length += bytes_xfrd;
+ urb_priv->state = US_CTRL_ACK;
+ break;
+ case US_CTRL_ACK:
+ etd_done = 1;
+ break;
+ default:
+ dev_err(imx21->dev,
+ "Invalid pipe state %d\n", urb_priv->state);
+ etd_done = 1;
+ break;
+ }
+ break;
+
+ case PIPE_BULK:
+ urb->actual_length += bytes_xfrd;
+ if ((urb_priv->state == US_BULK)
+ && (urb->transfer_flags & URB_ZERO_PACKET)
+ && urb->transfer_buffer_length > 0
+ && ((urb->transfer_buffer_length %
+ usb_maxpacket(urb->dev, urb->pipe,
+ usb_pipeout(urb->pipe))) == 0)) {
+ /* need a 0-packet */
+ urb_priv->state = US_BULK0;
+ } else {
+ etd_done = 1;
+ }
+ break;
+
+ case PIPE_INTERRUPT:
+ urb->actual_length += bytes_xfrd;
+ etd_done = 1;
+ break;
+ }
+
+ if (!etd_done) {
+ dev_vdbg(imx21->dev, "next state=%d\n", urb_priv->state);
+ schedule_nonisoc_etd(imx21, urb);
+ } else {
+ struct usb_host_endpoint *ep = urb->ep;
+
+ urb_done(hcd, urb, cc_to_error[cc]);
+ etd->urb = NULL;
+
+ if (!list_empty(&ep->urb_list)) {
+ urb = list_first_entry(&ep->urb_list,
+ struct urb, urb_list);
+ dev_vdbg(imx21->dev, "next URB %p\n", urb);
+ schedule_nonisoc_etd(imx21, urb);
+ }
+ }
+}
+
+static struct ep_priv *alloc_ep(void)
+{
+ int i;
+ struct ep_priv *ep_priv;
+
+ ep_priv = kzalloc(sizeof(struct ep_priv), GFP_ATOMIC);
+ if (!ep_priv)
+ return NULL;
+
+ for (i = 0; i < NUM_ISO_ETDS; ++i)
+ ep_priv->etd[i] = -1;
+
+ return ep_priv;
+}
+
+static int imx21_hc_urb_enqueue(struct usb_hcd *hcd,
+ struct urb *urb, gfp_t mem_flags)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ struct usb_host_endpoint *ep = urb->ep;
+ struct urb_priv *urb_priv;
+ struct ep_priv *ep_priv;
+ struct etd_priv *etd;
+ int ret;
+ unsigned long flags;
+ int new_ep = 0;
+
+ dev_vdbg(imx21->dev,
+ "enqueue urb=%p ep=%p len=%d "
+ "buffer=%p dma=%08X setupBuf=%p setupDma=%08X\n",
+ urb, ep,
+ urb->transfer_buffer_length,
+ urb->transfer_buffer, urb->transfer_dma,
+ urb->setup_packet, urb->setup_dma);
+
+ if (usb_pipeisoc(urb->pipe))
+ return imx21_hc_urb_enqueue_isoc(hcd, ep, urb, mem_flags);
+
+ urb_priv = kzalloc(sizeof(struct urb_priv), mem_flags);
+ if (!urb_priv)
+ return -ENOMEM;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ ep_priv = ep->hcpriv;
+ if (ep_priv == NULL) {
+ ep_priv = alloc_ep();
+ if (!ep_priv) {
+ ret = -ENOMEM;
+ goto failed_alloc_ep;
+ }
+ ep->hcpriv = ep_priv;
+ ep_priv->ep = ep;
+ new_ep = 1;
+ }
+
+ ret = usb_hcd_link_urb_to_ep(hcd, urb);
+ if (ret)
+ goto failed_link;
+
+ urb->status = -EINPROGRESS;
+ urb->actual_length = 0;
+ urb->error_count = 0;
+ urb->hcpriv = urb_priv;
+ urb_priv->ep = ep;
+
+ switch (usb_pipetype(urb->pipe)) {
+ case PIPE_CONTROL:
+ urb_priv->state = US_CTRL_SETUP;
+ break;
+ case PIPE_BULK:
+ urb_priv->state = US_BULK;
+ break;
+ }
+
+ debug_urb_submitted(imx21, urb);
+ if (ep_priv->etd[0] < 0) {
+ if (ep_priv->waiting_etd) {
+ dev_dbg(imx21->dev,
+ "no ETD available already queued %p\n",
+ ep_priv);
+ debug_urb_queued_for_etd(imx21, urb);
+ goto out;
+ }
+ ep_priv->etd[0] = alloc_etd(imx21);
+ if (ep_priv->etd[0] < 0) {
+ dev_dbg(imx21->dev,
+ "no ETD available queueing %p\n", ep_priv);
+ debug_urb_queued_for_etd(imx21, urb);
+ list_add_tail(&ep_priv->queue, &imx21->queue_for_etd);
+ ep_priv->waiting_etd = 1;
+ goto out;
+ }
+ }
+
+ /* Schedule if no URB already active for this endpoint */
+ etd = &imx21->etd[ep_priv->etd[0]];
+ if (etd->urb == NULL) {
+ DEBUG_LOG_FRAME(imx21, etd, last_req);
+ schedule_nonisoc_etd(imx21, urb);
+ }
+
+out:
+ spin_unlock_irqrestore(&imx21->lock, flags);
+ return 0;
+
+failed_link:
+failed_alloc_ep:
+ spin_unlock_irqrestore(&imx21->lock, flags);
+ kfree(urb_priv);
+ return ret;
+}
+
+static int imx21_hc_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
+ int status)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ unsigned long flags;
+ struct usb_host_endpoint *ep;
+ struct ep_priv *ep_priv;
+ struct urb_priv *urb_priv = urb->hcpriv;
+ int ret = -EINVAL;
+
+ dev_vdbg(imx21->dev, "dequeue urb=%p iso=%d status=%d\n",
+ urb, usb_pipeisoc(urb->pipe), status);
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ ret = usb_hcd_check_unlink_urb(hcd, urb, status);
+ if (ret)
+ goto fail;
+ ep = urb_priv->ep;
+ ep_priv = ep->hcpriv;
+
+ debug_urb_unlinked(imx21, urb);
+
+ if (usb_pipeisoc(urb->pipe)) {
+ dequeue_isoc_urb(imx21, urb, ep_priv);
+ schedule_isoc_etds(hcd, ep);
+ } else if (urb_priv->active) {
+ int etd_num = ep_priv->etd[0];
+ if (etd_num != -1) {
+ disactivate_etd(imx21, etd_num);
+ free_dmem(imx21, etd_readl(imx21, etd_num, 1) & 0xffff);
+ imx21->etd[etd_num].urb = NULL;
+ }
+ }
+
+ urb_done(hcd, urb, status);
+
+ spin_unlock_irqrestore(&imx21->lock, flags);
+ return 0;
+
+fail:
+ spin_unlock_irqrestore(&imx21->lock, flags);
+ return ret;
+}
+
+/* =========================================== */
+/* Interrupt dispatch */
+/* =========================================== */
+
+static void process_etds(struct usb_hcd *hcd, struct imx21 *imx21, int sof)
+{
+ int etd_num;
+ int enable_sof_int = 0;
+ unsigned long flags;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ for (etd_num = 0; etd_num < USB_NUM_ETD; etd_num++) {
+ u32 etd_mask = 1 << etd_num;
+ u32 enabled = readl(imx21->regs + USBH_ETDENSET) & etd_mask;
+ u32 done = readl(imx21->regs + USBH_ETDDONESTAT) & etd_mask;
+ struct etd_priv *etd = &imx21->etd[etd_num];
+
+
+ if (done) {
+ DEBUG_LOG_FRAME(imx21, etd, last_int);
+ } else {
+/*
+ * Kludge warning!
+ *
+ * When multiple transfers are using the bus we sometimes get into a state
+ * where the transfer has completed (the CC field of the ETD is != 0x0F),
+ * the ETD has self disabled but the ETDDONESTAT flag is not set
+ * (and hence no interrupt occurs).
+ * This causes the transfer in question to hang.
+ * The kludge below checks for this condition at each SOF and processes any
+ * blocked ETDs (after an arbitary 10 frame wait)
+ *
+ * With a single active transfer the usbtest test suite will run for days
+ * without the kludge.
+ * With other bus activity (eg mass storage) even just test1 will hang without
+ * the kludge.
+ */
+ u32 dword0;
+ int cc;
+
+ if (etd->active_count && !enabled) /* suspicious... */
+ enable_sof_int = 1;
+
+ if (!sof || enabled || !etd->active_count)
+ continue;
+
+ cc = etd_readl(imx21, etd_num, 2) >> DW2_COMPCODE;
+ if (cc == TD_NOTACCESSED)
+ continue;
+
+ if (++etd->active_count < 10)
+ continue;
+
+ dword0 = etd_readl(imx21, etd_num, 0);
+ dev_dbg(imx21->dev,
+ "unblock ETD %d dev=0x%X ep=0x%X cc=0x%02X!\n",
+ etd_num, dword0 & 0x7F,
+ (dword0 >> DW0_ENDPNT) & 0x0F,
+ cc);
+
+#ifdef DEBUG
+ dev_dbg(imx21->dev,
+ "frame: act=%d disact=%d"
+ " int=%d req=%d cur=%d\n",
+ etd->activated_frame,
+ etd->disactivated_frame,
+ etd->last_int_frame,
+ etd->last_req_frame,
+ readl(imx21->regs + USBH_FRMNUB));
+ imx21->debug_unblocks++;
+#endif
+ etd->active_count = 0;
+/* End of kludge */
+ }
+
+ if (etd->ep == NULL || etd->urb == NULL) {
+ dev_dbg(imx21->dev,
+ "Interrupt for unexpected etd %d"
+ " ep=%p urb=%p\n",
+ etd_num, etd->ep, etd->urb);
+ disactivate_etd(imx21, etd_num);
+ continue;
+ }
+
+ if (usb_pipeisoc(etd->urb->pipe))
+ isoc_etd_done(hcd, etd->urb, etd_num);
+ else
+ nonisoc_etd_done(hcd, etd->urb, etd_num);
+ }
+
+ /* only enable SOF interrupt if it may be needed for the kludge */
+ if (enable_sof_int)
+ set_register_bits(imx21, USBH_SYSIEN, USBH_SYSIEN_SOFINT);
+ else
+ clear_register_bits(imx21, USBH_SYSIEN, USBH_SYSIEN_SOFINT);
+
+
+ spin_unlock_irqrestore(&imx21->lock, flags);
+}
+
+static irqreturn_t imx21_irq(struct usb_hcd *hcd)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ u32 ints = readl(imx21->regs + USBH_SYSISR);
+
+ if (ints & USBH_SYSIEN_HERRINT)
+ dev_dbg(imx21->dev, "Scheduling error\n");
+
+ if (ints & USBH_SYSIEN_SORINT)
+ dev_dbg(imx21->dev, "Scheduling overrun\n");
+
+ if (ints & (USBH_SYSISR_DONEINT | USBH_SYSISR_SOFINT))
+ process_etds(hcd, imx21, ints & USBH_SYSISR_SOFINT);
+
+ writel(ints, imx21->regs + USBH_SYSISR);
+ return IRQ_HANDLED;
+}
+
+static void imx21_hc_endpoint_disable(struct usb_hcd *hcd,
+ struct usb_host_endpoint *ep)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ unsigned long flags;
+ struct ep_priv *ep_priv;
+ int i;
+
+ if (ep == NULL)
+ return;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+ ep_priv = ep->hcpriv;
+ dev_vdbg(imx21->dev, "disable ep=%p, ep->hcpriv=%p\n", ep, ep_priv);
+
+ if (!list_empty(&ep->urb_list))
+ dev_dbg(imx21->dev, "ep's URB list is not empty\n");
+
+ if (ep_priv != NULL) {
+ for (i = 0; i < NUM_ISO_ETDS; i++) {
+ if (ep_priv->etd[i] > -1)
+ dev_dbg(imx21->dev, "free etd %d for disable\n",
+ ep_priv->etd[i]);
+
+ free_etd(imx21, ep_priv->etd[i]);
+ }
+ kfree(ep_priv);
+ ep->hcpriv = NULL;
+ }
+
+ for (i = 0; i < USB_NUM_ETD; i++) {
+ if (imx21->etd[i].alloc && imx21->etd[i].ep == ep) {
+ dev_err(imx21->dev,
+ "Active etd %d for disabled ep=%p!\n", i, ep);
+ free_etd(imx21, i);
+ }
+ }
+ free_epdmem(imx21, ep);
+ spin_unlock_irqrestore(&imx21->lock, flags);
+}
+
+/* =========================================== */
+/* Hub handling */
+/* =========================================== */
+
+static int get_hub_descriptor(struct usb_hcd *hcd,
+ struct usb_hub_descriptor *desc)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ desc->bDescriptorType = 0x29; /* HUB descriptor */
+ desc->bHubContrCurrent = 0;
+
+ desc->bNbrPorts = readl(imx21->regs + USBH_ROOTHUBA)
+ & USBH_ROOTHUBA_NDNSTMPRT_MASK;
+ desc->bDescLength = 9;
+ desc->bPwrOn2PwrGood = 0;
+ desc->wHubCharacteristics = (__force __u16) cpu_to_le16(
+ 0x0002 | /* No power switching */
+ 0x0010 | /* No over current protection */
+ 0);
+
+ desc->bitmap[0] = 1 << 1;
+ desc->bitmap[1] = ~0;
+ return 0;
+}
+
+static int imx21_hc_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ int ports;
+ int changed = 0;
+ int i;
+ unsigned long flags;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+ ports = readl(imx21->regs + USBH_ROOTHUBA)
+ & USBH_ROOTHUBA_NDNSTMPRT_MASK;
+ if (ports > 7) {
+ ports = 7;
+ dev_err(imx21->dev, "ports %d > 7\n", ports);
+ }
+ for (i = 0; i < ports; i++) {
+ if (readl(imx21->regs + USBH_PORTSTAT(i)) &
+ (USBH_PORTSTAT_CONNECTSC |
+ USBH_PORTSTAT_PRTENBLSC |
+ USBH_PORTSTAT_PRTSTATSC |
+ USBH_PORTSTAT_OVRCURIC |
+ USBH_PORTSTAT_PRTRSTSC)) {
+
+ changed = 1;
+ buf[0] |= 1 << (i + 1);
+ }
+ }
+ spin_unlock_irqrestore(&imx21->lock, flags);
+
+ if (changed)
+ dev_info(imx21->dev, "Hub status changed\n");
+ return changed;
+}
+
+static int imx21_hc_hub_control(struct usb_hcd *hcd,
+ u16 typeReq,
+ u16 wValue, u16 wIndex, char *buf, u16 wLength)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ int rc = 0;
+ u32 status_write = 0;
+
+ switch (typeReq) {
+ case ClearHubFeature:
+ dev_dbg(imx21->dev, "ClearHubFeature\n");
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+ dev_dbg(imx21->dev, " OVER_CURRENT\n");
+ break;
+ case C_HUB_LOCAL_POWER:
+ dev_dbg(imx21->dev, " LOCAL_POWER\n");
+ break;
+ default:
+ dev_dbg(imx21->dev, " unknown\n");
+ rc = -EINVAL;
+ break;
+ }
+ break;
+
+ case ClearPortFeature:
+ dev_dbg(imx21->dev, "ClearPortFeature\n");
+ switch (wValue) {
+ case USB_PORT_FEAT_ENABLE:
+ dev_dbg(imx21->dev, " ENABLE\n");
+ status_write = USBH_PORTSTAT_CURCONST;
+ break;
+ case USB_PORT_FEAT_SUSPEND:
+ dev_dbg(imx21->dev, " SUSPEND\n");
+ status_write = USBH_PORTSTAT_PRTOVRCURI;
+ break;
+ case USB_PORT_FEAT_POWER:
+ dev_dbg(imx21->dev, " POWER\n");
+ status_write = USBH_PORTSTAT_LSDEVCON;
+ break;
+ case USB_PORT_FEAT_C_ENABLE:
+ dev_dbg(imx21->dev, " C_ENABLE\n");
+ status_write = USBH_PORTSTAT_PRTENBLSC;
+ break;
+ case USB_PORT_FEAT_C_SUSPEND:
+ dev_dbg(imx21->dev, " C_SUSPEND\n");
+ status_write = USBH_PORTSTAT_PRTSTATSC;
+ break;
+ case USB_PORT_FEAT_C_CONNECTION:
+ dev_dbg(imx21->dev, " C_CONNECTION\n");
+ status_write = USBH_PORTSTAT_CONNECTSC;
+ break;
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ dev_dbg(imx21->dev, " C_OVER_CURRENT\n");
+ status_write = USBH_PORTSTAT_OVRCURIC;
+ break;
+ case USB_PORT_FEAT_C_RESET:
+ dev_dbg(imx21->dev, " C_RESET\n");
+ status_write = USBH_PORTSTAT_PRTRSTSC;
+ break;
+ default:
+ dev_dbg(imx21->dev, " unknown\n");
+ rc = -EINVAL;
+ break;
+ }
+
+ break;
+
+ case GetHubDescriptor:
+ dev_dbg(imx21->dev, "GetHubDescriptor\n");
+ rc = get_hub_descriptor(hcd, (void *)buf);
+ break;
+
+ case GetHubStatus:
+ dev_dbg(imx21->dev, " GetHubStatus\n");
+ *(__le32 *) buf = 0;
+ break;
+
+ case GetPortStatus:
+ dev_dbg(imx21->dev, "GetPortStatus: port: %d, 0x%x\n",
+ wIndex, USBH_PORTSTAT(wIndex - 1));
+ *(__le32 *) buf = readl(imx21->regs +
+ USBH_PORTSTAT(wIndex - 1));
+ break;
+
+ case SetHubFeature:
+ dev_dbg(imx21->dev, "SetHubFeature\n");
+ switch (wValue) {
+ case C_HUB_OVER_CURRENT:
+ dev_dbg(imx21->dev, " OVER_CURRENT\n");
+ break;
+
+ case C_HUB_LOCAL_POWER:
+ dev_dbg(imx21->dev, " LOCAL_POWER\n");
+ break;
+ default:
+ dev_dbg(imx21->dev, " unknown\n");
+ rc = -EINVAL;
+ break;
+ }
+
+ break;
+
+ case SetPortFeature:
+ dev_dbg(imx21->dev, "SetPortFeature\n");
+ switch (wValue) {
+ case USB_PORT_FEAT_SUSPEND:
+ dev_dbg(imx21->dev, " SUSPEND\n");
+ status_write = USBH_PORTSTAT_PRTSUSPST;
+ break;
+ case USB_PORT_FEAT_POWER:
+ dev_dbg(imx21->dev, " POWER\n");
+ status_write = USBH_PORTSTAT_PRTPWRST;
+ break;
+ case USB_PORT_FEAT_RESET:
+ dev_dbg(imx21->dev, " RESET\n");
+ status_write = USBH_PORTSTAT_PRTRSTST;
+ break;
+ default:
+ dev_dbg(imx21->dev, " unknown\n");
+ rc = -EINVAL;
+ break;
+ }
+ break;
+
+ default:
+ dev_dbg(imx21->dev, " unknown\n");
+ rc = -EINVAL;
+ break;
+ }
+
+ if (status_write)
+ writel(status_write, imx21->regs + USBH_PORTSTAT(wIndex - 1));
+ return rc;
+}
+
+/* =========================================== */
+/* Host controller management */
+/* =========================================== */
+
+static int imx21_hc_reset(struct usb_hcd *hcd)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ unsigned long timeout;
+ unsigned long flags;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ /* Reset the Host controler modules */
+ writel(USBOTG_RST_RSTCTRL | USBOTG_RST_RSTRH |
+ USBOTG_RST_RSTHSIE | USBOTG_RST_RSTHC,
+ imx21->regs + USBOTG_RST_CTRL);
+
+ /* Wait for reset to finish */
+ timeout = jiffies + HZ;
+ while (readl(imx21->regs + USBOTG_RST_CTRL) != 0) {
+ if (time_after(jiffies, timeout)) {
+ spin_unlock_irqrestore(&imx21->lock, flags);
+ dev_err(imx21->dev, "timeout waiting for reset\n");
+ return -ETIMEDOUT;
+ }
+ spin_unlock_irq(&imx21->lock);
+ schedule_timeout(1);
+ spin_lock_irq(&imx21->lock);
+ }
+ spin_unlock_irqrestore(&imx21->lock, flags);
+ return 0;
+}
+
+static int __devinit imx21_hc_start(struct usb_hcd *hcd)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ unsigned long flags;
+ int i, j;
+ u32 hw_mode = USBOTG_HWMODE_CRECFG_HOST;
+ u32 usb_control = 0;
+
+ hw_mode |= ((imx21->pdata->host_xcvr << USBOTG_HWMODE_HOSTXCVR_SHIFT) &
+ USBOTG_HWMODE_HOSTXCVR_MASK);
+ hw_mode |= ((imx21->pdata->otg_xcvr << USBOTG_HWMODE_OTGXCVR_SHIFT) &
+ USBOTG_HWMODE_OTGXCVR_MASK);
+
+ if (imx21->pdata->host1_txenoe)
+ usb_control |= USBCTRL_HOST1_TXEN_OE;
+
+ if (!imx21->pdata->host1_xcverless)
+ usb_control |= USBCTRL_HOST1_BYP_TLL;
+
+ if (imx21->pdata->otg_ext_xcvr)
+ usb_control |= USBCTRL_OTC_RCV_RXDP;
+
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ writel((USBOTG_CLK_CTRL_HST | USBOTG_CLK_CTRL_MAIN),
+ imx21->regs + USBOTG_CLK_CTRL);
+ writel(hw_mode, imx21->regs + USBOTG_HWMODE);
+ writel(usb_control, imx21->regs + USBCTRL);
+ writel(USB_MISCCONTROL_SKPRTRY | USB_MISCCONTROL_ARBMODE,
+ imx21->regs + USB_MISCCONTROL);
+
+ /* Clear the ETDs */
+ for (i = 0; i < USB_NUM_ETD; i++)
+ for (j = 0; j < 4; j++)
+ etd_writel(imx21, i, j, 0);
+
+ /* Take the HC out of reset */
+ writel(USBH_HOST_CTRL_HCUSBSTE_OPERATIONAL | USBH_HOST_CTRL_CTLBLKSR_1,
+ imx21->regs + USBH_HOST_CTRL);
+
+ /* Enable ports */
+ if (imx21->pdata->enable_otg_host)
+ writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
+ imx21->regs + USBH_PORTSTAT(0));
+
+ if (imx21->pdata->enable_host1)
+ writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
+ imx21->regs + USBH_PORTSTAT(1));
+
+ if (imx21->pdata->enable_host2)
+ writel(USBH_PORTSTAT_PRTPWRST | USBH_PORTSTAT_PRTENABST,
+ imx21->regs + USBH_PORTSTAT(2));
+
+
+ hcd->state = HC_STATE_RUNNING;
+
+ /* Enable host controller interrupts */
+ set_register_bits(imx21, USBH_SYSIEN,
+ USBH_SYSIEN_HERRINT |
+ USBH_SYSIEN_DONEINT | USBH_SYSIEN_SORINT);
+ set_register_bits(imx21, USBOTG_CINT_STEN, USBOTG_HCINT);
+
+ spin_unlock_irqrestore(&imx21->lock, flags);
+
+ return 0;
+}
+
+static void imx21_hc_stop(struct usb_hcd *hcd)
+{
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ unsigned long flags;
+
+ spin_lock_irqsave(&imx21->lock, flags);
+
+ writel(0, imx21->regs + USBH_SYSIEN);
+ clear_register_bits(imx21, USBOTG_CINT_STEN, USBOTG_HCINT);
+ clear_register_bits(imx21, USBOTG_CLK_CTRL_HST | USBOTG_CLK_CTRL_MAIN,
+ USBOTG_CLK_CTRL);
+ spin_unlock_irqrestore(&imx21->lock, flags);
+}
+
+/* =========================================== */
+/* Driver glue */
+/* =========================================== */
+
+static struct hc_driver imx21_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "IMX21 USB Host Controller",
+ .hcd_priv_size = sizeof(struct imx21),
+
+ .flags = HCD_USB11,
+ .irq = imx21_irq,
+
+ .reset = imx21_hc_reset,
+ .start = imx21_hc_start,
+ .stop = imx21_hc_stop,
+
+ /* I/O requests */
+ .urb_enqueue = imx21_hc_urb_enqueue,
+ .urb_dequeue = imx21_hc_urb_dequeue,
+ .endpoint_disable = imx21_hc_endpoint_disable,
+
+ /* scheduling support */
+ .get_frame_number = imx21_hc_get_frame,
+
+ /* Root hub support */
+ .hub_status_data = imx21_hc_hub_status_data,
+ .hub_control = imx21_hc_hub_control,
+
+};
+
+static struct mx21_usbh_platform_data default_pdata = {
+ .host_xcvr = MX21_USBXCVR_TXDIF_RXDIF,
+ .otg_xcvr = MX21_USBXCVR_TXDIF_RXDIF,
+ .enable_host1 = 1,
+ .enable_host2 = 1,
+ .enable_otg_host = 1,
+
+};
+
+static int imx21_remove(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(pdev);
+ struct imx21 *imx21 = hcd_to_imx21(hcd);
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ remove_debug_files(imx21);
+ usb_remove_hcd(hcd);
+
+ if (res != NULL) {
+ clk_disable(imx21->clk);
+ clk_put(imx21->clk);
+ iounmap(imx21->regs);
+ release_mem_region(res->start, resource_size(res));
+ }
+
+ kfree(hcd);
+ return 0;
+}
+
+
+static int imx21_probe(struct platform_device *pdev)
+{
+ struct usb_hcd *hcd;
+ struct imx21 *imx21;
+ struct resource *res;
+ int ret;
+ int irq;
+
+ printk(KERN_INFO "%s\n", imx21_hc_driver.product_desc);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res)
+ return -ENODEV;
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0)
+ return -ENXIO;
+
+ hcd = usb_create_hcd(&imx21_hc_driver,
+ &pdev->dev, dev_name(&pdev->dev));
+ if (hcd == NULL) {
+ dev_err(&pdev->dev, "Cannot create hcd (%s)\n",
+ dev_name(&pdev->dev));
+ return -ENOMEM;
+ }
+
+ imx21 = hcd_to_imx21(hcd);
+ imx21->dev = &pdev->dev;
+ imx21->pdata = pdev->dev.platform_data;
+ if (!imx21->pdata)
+ imx21->pdata = &default_pdata;
+
+ spin_lock_init(&imx21->lock);
+ INIT_LIST_HEAD(&imx21->dmem_list);
+ INIT_LIST_HEAD(&imx21->queue_for_etd);
+ INIT_LIST_HEAD(&imx21->queue_for_dmem);
+ create_debug_files(imx21);
+
+ res = request_mem_region(res->start, resource_size(res), hcd_name);
+ if (!res) {
+ ret = -EBUSY;
+ goto failed_request_mem;
+ }
+
+ imx21->regs = ioremap(res->start, resource_size(res));
+ if (imx21->regs == NULL) {
+ dev_err(imx21->dev, "Cannot map registers\n");
+ ret = -ENOMEM;
+ goto failed_ioremap;
+ }
+
+ /* Enable clocks source */
+ imx21->clk = clk_get(imx21->dev, NULL);
+ if (IS_ERR(imx21->clk)) {
+ dev_err(imx21->dev, "no clock found\n");
+ ret = PTR_ERR(imx21->clk);
+ goto failed_clock_get;
+ }
+
+ ret = clk_set_rate(imx21->clk, clk_round_rate(imx21->clk, 48000000));
+ if (ret)
+ goto failed_clock_set;
+ ret = clk_enable(imx21->clk);
+ if (ret)
+ goto failed_clock_enable;
+
+ dev_info(imx21->dev, "Hardware HC revision: 0x%02X\n",
+ (readl(imx21->regs + USBOTG_HWMODE) >> 16) & 0xFF);
+
+ ret = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+ if (ret != 0) {
+ dev_err(imx21->dev, "usb_add_hcd() returned %d\n", ret);
+ goto failed_add_hcd;
+ }
+
+ return 0;
+
+failed_add_hcd:
+ clk_disable(imx21->clk);
+failed_clock_enable:
+failed_clock_set:
+ clk_put(imx21->clk);
+failed_clock_get:
+ iounmap(imx21->regs);
+failed_ioremap:
+ release_mem_region(res->start, res->end - res->start);
+failed_request_mem:
+ remove_debug_files(imx21);
+ usb_put_hcd(hcd);
+ return ret;
+}
+
+static struct platform_driver imx21_hcd_driver = {
+ .driver = {
+ .name = (char *)hcd_name,
+ },
+ .probe = imx21_probe,
+ .remove = imx21_remove,
+ .suspend = NULL,
+ .resume = NULL,
+};
+
+static int __init imx21_hcd_init(void)
+{
+ return platform_driver_register(&imx21_hcd_driver);
+}
+
+static void __exit imx21_hcd_cleanup(void)
+{
+ platform_driver_unregister(&imx21_hcd_driver);
+}
+
+module_init(imx21_hcd_init);
+module_exit(imx21_hcd_cleanup);
+
+MODULE_DESCRIPTION("i.MX21 USB Host controller");
+MODULE_AUTHOR("Martin Fuzzey");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:imx21-hcd");
diff --git a/drivers/usb/host/imx21-hcd.h b/drivers/usb/host/imx21-hcd.h
new file mode 100644
index 000000000000..1b0d913780a5
--- /dev/null
+++ b/drivers/usb/host/imx21-hcd.h
@@ -0,0 +1,436 @@
+/*
+ * Macros and prototypes for i.MX21
+ *
+ * Copyright (C) 2006 Loping Dog Embedded Systems
+ * Copyright (C) 2009 Martin Fuzzey
+ * Originally written by Jay Monkman <jtm@lopingdog.com>
+ * Ported to 2.6.30, debugged and enhanced by Martin Fuzzey
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __LINUX_IMX21_HCD_H__
+#define __LINUX_IMX21_HCD_H__
+
+#include <mach/mx21-usbhost.h>
+
+#define NUM_ISO_ETDS 2
+#define USB_NUM_ETD 32
+#define DMEM_SIZE 4096
+
+/* Register definitions */
+#define USBOTG_HWMODE 0x00
+#define USBOTG_HWMODE_ANASDBEN (1 << 14)
+#define USBOTG_HWMODE_OTGXCVR_SHIFT 6
+#define USBOTG_HWMODE_OTGXCVR_MASK (3 << 6)
+#define USBOTG_HWMODE_OTGXCVR_TD_RD (0 << 6)
+#define USBOTG_HWMODE_OTGXCVR_TS_RD (2 << 6)
+#define USBOTG_HWMODE_OTGXCVR_TD_RS (1 << 6)
+#define USBOTG_HWMODE_OTGXCVR_TS_RS (3 << 6)
+#define USBOTG_HWMODE_HOSTXCVR_SHIFT 4
+#define USBOTG_HWMODE_HOSTXCVR_MASK (3 << 4)
+#define USBOTG_HWMODE_HOSTXCVR_TD_RD (0 << 4)
+#define USBOTG_HWMODE_HOSTXCVR_TS_RD (2 << 4)
+#define USBOTG_HWMODE_HOSTXCVR_TD_RS (1 << 4)
+#define USBOTG_HWMODE_HOSTXCVR_TS_RS (3 << 4)
+#define USBOTG_HWMODE_CRECFG_MASK (3 << 0)
+#define USBOTG_HWMODE_CRECFG_HOST (1 << 0)
+#define USBOTG_HWMODE_CRECFG_FUNC (2 << 0)
+#define USBOTG_HWMODE_CRECFG_HNP (3 << 0)
+
+#define USBOTG_CINT_STAT 0x04
+#define USBOTG_CINT_STEN 0x08
+#define USBOTG_ASHNPINT (1 << 5)
+#define USBOTG_ASFCINT (1 << 4)
+#define USBOTG_ASHCINT (1 << 3)
+#define USBOTG_SHNPINT (1 << 2)
+#define USBOTG_FCINT (1 << 1)
+#define USBOTG_HCINT (1 << 0)
+
+#define USBOTG_CLK_CTRL 0x0c
+#define USBOTG_CLK_CTRL_FUNC (1 << 2)
+#define USBOTG_CLK_CTRL_HST (1 << 1)
+#define USBOTG_CLK_CTRL_MAIN (1 << 0)
+
+#define USBOTG_RST_CTRL 0x10
+#define USBOTG_RST_RSTI2C (1 << 15)
+#define USBOTG_RST_RSTCTRL (1 << 5)
+#define USBOTG_RST_RSTFC (1 << 4)
+#define USBOTG_RST_RSTFSKE (1 << 3)
+#define USBOTG_RST_RSTRH (1 << 2)
+#define USBOTG_RST_RSTHSIE (1 << 1)
+#define USBOTG_RST_RSTHC (1 << 0)
+
+#define USBOTG_FRM_INTVL 0x14
+#define USBOTG_FRM_REMAIN 0x18
+#define USBOTG_HNP_CSR 0x1c
+#define USBOTG_HNP_ISR 0x2c
+#define USBOTG_HNP_IEN 0x30
+
+#define USBOTG_I2C_TXCVR_REG(x) (0x100 + (x))
+#define USBOTG_I2C_XCVR_DEVAD 0x118
+#define USBOTG_I2C_SEQ_OP_REG 0x119
+#define USBOTG_I2C_SEQ_RD_STARTAD 0x11a
+#define USBOTG_I2C_OP_CTRL_REG 0x11b
+#define USBOTG_I2C_SCLK_TO_SCK_HPER 0x11e
+#define USBOTG_I2C_MASTER_INT_REG 0x11f
+
+#define USBH_HOST_CTRL 0x80
+#define USBH_HOST_CTRL_HCRESET (1 << 31)
+#define USBH_HOST_CTRL_SCHDOVR(x) ((x) << 16)
+#define USBH_HOST_CTRL_RMTWUEN (1 << 4)
+#define USBH_HOST_CTRL_HCUSBSTE_RESET (0 << 2)
+#define USBH_HOST_CTRL_HCUSBSTE_RESUME (1 << 2)
+#define USBH_HOST_CTRL_HCUSBSTE_OPERATIONAL (2 << 2)
+#define USBH_HOST_CTRL_HCUSBSTE_SUSPEND (3 << 2)
+#define USBH_HOST_CTRL_CTLBLKSR_1 (0 << 0)
+#define USBH_HOST_CTRL_CTLBLKSR_2 (1 << 0)
+#define USBH_HOST_CTRL_CTLBLKSR_3 (2 << 0)
+#define USBH_HOST_CTRL_CTLBLKSR_4 (3 << 0)
+
+#define USBH_SYSISR 0x88
+#define USBH_SYSISR_PSCINT (1 << 6)
+#define USBH_SYSISR_FMOFINT (1 << 5)
+#define USBH_SYSISR_HERRINT (1 << 4)
+#define USBH_SYSISR_RESDETINT (1 << 3)
+#define USBH_SYSISR_SOFINT (1 << 2)
+#define USBH_SYSISR_DONEINT (1 << 1)
+#define USBH_SYSISR_SORINT (1 << 0)
+
+#define USBH_SYSIEN 0x8c
+#define USBH_SYSIEN_PSCINT (1 << 6)
+#define USBH_SYSIEN_FMOFINT (1 << 5)
+#define USBH_SYSIEN_HERRINT (1 << 4)
+#define USBH_SYSIEN_RESDETINT (1 << 3)
+#define USBH_SYSIEN_SOFINT (1 << 2)
+#define USBH_SYSIEN_DONEINT (1 << 1)
+#define USBH_SYSIEN_SORINT (1 << 0)
+
+#define USBH_XBUFSTAT 0x98
+#define USBH_YBUFSTAT 0x9c
+#define USBH_XYINTEN 0xa0
+#define USBH_XFILLSTAT 0xa8
+#define USBH_YFILLSTAT 0xac
+#define USBH_ETDENSET 0xc0
+#define USBH_ETDENCLR 0xc4
+#define USBH_IMMEDINT 0xcc
+#define USBH_ETDDONESTAT 0xd0
+#define USBH_ETDDONEEN 0xd4
+#define USBH_FRMNUB 0xe0
+#define USBH_LSTHRESH 0xe4
+
+#define USBH_ROOTHUBA 0xe8
+#define USBH_ROOTHUBA_PWRTOGOOD_MASK (0xff)
+#define USBH_ROOTHUBA_PWRTOGOOD_SHIFT (24)
+#define USBH_ROOTHUBA_NOOVRCURP (1 << 12)
+#define USBH_ROOTHUBA_OVRCURPM (1 << 11)
+#define USBH_ROOTHUBA_DEVTYPE (1 << 10)
+#define USBH_ROOTHUBA_PWRSWTMD (1 << 9)
+#define USBH_ROOTHUBA_NOPWRSWT (1 << 8)
+#define USBH_ROOTHUBA_NDNSTMPRT_MASK (0xff)
+
+#define USBH_ROOTHUBB 0xec
+#define USBH_ROOTHUBB_PRTPWRCM(x) (1 << ((x) + 16))
+#define USBH_ROOTHUBB_DEVREMOVE(x) (1 << (x))
+
+#define USBH_ROOTSTAT 0xf0
+#define USBH_ROOTSTAT_CLRRMTWUE (1 << 31)
+#define USBH_ROOTSTAT_OVRCURCHG (1 << 17)
+#define USBH_ROOTSTAT_DEVCONWUE (1 << 15)
+#define USBH_ROOTSTAT_OVRCURI (1 << 1)
+#define USBH_ROOTSTAT_LOCPWRS (1 << 0)
+
+#define USBH_PORTSTAT(x) (0xf4 + ((x) * 4))
+#define USBH_PORTSTAT_PRTRSTSC (1 << 20)
+#define USBH_PORTSTAT_OVRCURIC (1 << 19)
+#define USBH_PORTSTAT_PRTSTATSC (1 << 18)
+#define USBH_PORTSTAT_PRTENBLSC (1 << 17)
+#define USBH_PORTSTAT_CONNECTSC (1 << 16)
+#define USBH_PORTSTAT_LSDEVCON (1 << 9)
+#define USBH_PORTSTAT_PRTPWRST (1 << 8)
+#define USBH_PORTSTAT_PRTRSTST (1 << 4)
+#define USBH_PORTSTAT_PRTOVRCURI (1 << 3)
+#define USBH_PORTSTAT_PRTSUSPST (1 << 2)
+#define USBH_PORTSTAT_PRTENABST (1 << 1)
+#define USBH_PORTSTAT_CURCONST (1 << 0)
+
+#define USB_DMAREV 0x800
+#define USB_DMAINTSTAT 0x804
+#define USB_DMAINTSTAT_EPERR (1 << 1)
+#define USB_DMAINTSTAT_ETDERR (1 << 0)
+
+#define USB_DMAINTEN 0x808
+#define USB_DMAINTEN_EPERRINTEN (1 << 1)
+#define USB_DMAINTEN_ETDERRINTEN (1 << 0)
+
+#define USB_ETDDMAERSTAT 0x80c
+#define USB_EPDMAERSTAT 0x810
+#define USB_ETDDMAEN 0x820
+#define USB_EPDMAEN 0x824
+#define USB_ETDDMAXTEN 0x828
+#define USB_EPDMAXTEN 0x82c
+#define USB_ETDDMAENXYT 0x830
+#define USB_EPDMAENXYT 0x834
+#define USB_ETDDMABST4EN 0x838
+#define USB_EPDMABST4EN 0x83c
+
+#define USB_MISCCONTROL 0x840
+#define USB_MISCCONTROL_ISOPREVFRM (1 << 3)
+#define USB_MISCCONTROL_SKPRTRY (1 << 2)
+#define USB_MISCCONTROL_ARBMODE (1 << 1)
+#define USB_MISCCONTROL_FILTCC (1 << 0)
+
+#define USB_ETDDMACHANLCLR 0x848
+#define USB_EPDMACHANLCLR 0x84c
+#define USB_ETDSMSA(x) (0x900 + ((x) * 4))
+#define USB_EPSMSA(x) (0x980 + ((x) * 4))
+#define USB_ETDDMABUFPTR(x) (0xa00 + ((x) * 4))
+#define USB_EPDMABUFPTR(x) (0xa80 + ((x) * 4))
+
+#define USB_ETD_DWORD(x, w) (0x200 + ((x) * 16) + ((w) * 4))
+#define DW0_ADDRESS 0
+#define DW0_ENDPNT 7
+#define DW0_DIRECT 11
+#define DW0_SPEED 13
+#define DW0_FORMAT 14
+#define DW0_MAXPKTSIZ 16
+#define DW0_HALTED 27
+#define DW0_TOGCRY 28
+#define DW0_SNDNAK 30
+
+#define DW1_XBUFSRTAD 0
+#define DW1_YBUFSRTAD 16
+
+#define DW2_RTRYDELAY 0
+#define DW2_POLINTERV 0
+#define DW2_STARTFRM 0
+#define DW2_RELPOLPOS 8
+#define DW2_DIRPID 16
+#define DW2_BUFROUND 18
+#define DW2_DELAYINT 19
+#define DW2_DATATOG 22
+#define DW2_ERRORCNT 24
+#define DW2_COMPCODE 28
+
+#define DW3_TOTBYECNT 0
+#define DW3_PKTLEN0 0
+#define DW3_COMPCODE0 12
+#define DW3_PKTLEN1 16
+#define DW3_BUFSIZE 21
+#define DW3_COMPCODE1 28
+
+#define USBCTRL 0x600
+#define USBCTRL_I2C_WU_INT_STAT (1 << 27)
+#define USBCTRL_OTG_WU_INT_STAT (1 << 26)
+#define USBCTRL_HOST_WU_INT_STAT (1 << 25)
+#define USBCTRL_FNT_WU_INT_STAT (1 << 24)
+#define USBCTRL_I2C_WU_INT_EN (1 << 19)
+#define USBCTRL_OTG_WU_INT_EN (1 << 18)
+#define USBCTRL_HOST_WU_INT_EN (1 << 17)
+#define USBCTRL_FNT_WU_INT_EN (1 << 16)
+#define USBCTRL_OTC_RCV_RXDP (1 << 13)
+#define USBCTRL_HOST1_BYP_TLL (1 << 12)
+#define USBCTRL_OTG_BYP_VAL(x) ((x) << 10)
+#define USBCTRL_HOST1_BYP_VAL(x) ((x) << 8)
+#define USBCTRL_OTG_PWR_MASK (1 << 6)
+#define USBCTRL_HOST1_PWR_MASK (1 << 5)
+#define USBCTRL_HOST2_PWR_MASK (1 << 4)
+#define USBCTRL_USB_BYP (1 << 2)
+#define USBCTRL_HOST1_TXEN_OE (1 << 1)
+
+
+/* Values in TD blocks */
+#define TD_DIR_SETUP 0
+#define TD_DIR_OUT 1
+#define TD_DIR_IN 2
+#define TD_FORMAT_CONTROL 0
+#define TD_FORMAT_ISO 1
+#define TD_FORMAT_BULK 2
+#define TD_FORMAT_INT 3
+#define TD_TOGGLE_CARRY 0
+#define TD_TOGGLE_DATA0 2
+#define TD_TOGGLE_DATA1 3
+
+/* control transfer states */
+#define US_CTRL_SETUP 2
+#define US_CTRL_DATA 1
+#define US_CTRL_ACK 0
+
+/* bulk transfer main state and 0-length packet */
+#define US_BULK 1
+#define US_BULK0 0
+
+/*ETD format description*/
+#define IMX_FMT_CTRL 0x0
+#define IMX_FMT_ISO 0x1
+#define IMX_FMT_BULK 0x2
+#define IMX_FMT_INT 0x3
+
+static char fmt_urb_to_etd[4] = {
+/*PIPE_ISOCHRONOUS*/ IMX_FMT_ISO,
+/*PIPE_INTERRUPT*/ IMX_FMT_INT,
+/*PIPE_CONTROL*/ IMX_FMT_CTRL,
+/*PIPE_BULK*/ IMX_FMT_BULK
+};
+
+/* condition (error) CC codes and mapping (OHCI like) */
+
+#define TD_CC_NOERROR 0x00
+#define TD_CC_CRC 0x01
+#define TD_CC_BITSTUFFING 0x02
+#define TD_CC_DATATOGGLEM 0x03
+#define TD_CC_STALL 0x04
+#define TD_DEVNOTRESP 0x05
+#define TD_PIDCHECKFAIL 0x06
+/*#define TD_UNEXPECTEDPID 0x07 - reserved, not active on MX2*/
+#define TD_DATAOVERRUN 0x08
+#define TD_DATAUNDERRUN 0x09
+#define TD_BUFFEROVERRUN 0x0C
+#define TD_BUFFERUNDERRUN 0x0D
+#define TD_SCHEDULEOVERRUN 0x0E
+#define TD_NOTACCESSED 0x0F
+
+static const int cc_to_error[16] = {
+ /* No Error */ 0,
+ /* CRC Error */ -EILSEQ,
+ /* Bit Stuff */ -EPROTO,
+ /* Data Togg */ -EILSEQ,
+ /* Stall */ -EPIPE,
+ /* DevNotResp */ -ETIMEDOUT,
+ /* PIDCheck */ -EPROTO,
+ /* UnExpPID */ -EPROTO,
+ /* DataOver */ -EOVERFLOW,
+ /* DataUnder */ -EREMOTEIO,
+ /* (for hw) */ -EIO,
+ /* (for hw) */ -EIO,
+ /* BufferOver */ -ECOMM,
+ /* BuffUnder */ -ENOSR,
+ /* (for HCD) */ -ENOSPC,
+ /* (for HCD) */ -EALREADY
+};
+
+/* HCD data associated with a usb core URB */
+struct urb_priv {
+ struct urb *urb;
+ struct usb_host_endpoint *ep;
+ int active;
+ int state;
+ struct td *isoc_td;
+ int isoc_remaining;
+ int isoc_status;
+};
+
+/* HCD data associated with a usb core endpoint */
+struct ep_priv {
+ struct usb_host_endpoint *ep;
+ struct list_head td_list;
+ struct list_head queue;
+ int etd[NUM_ISO_ETDS];
+ int waiting_etd;
+};
+
+/* isoc packet */
+struct td {
+ struct list_head list;
+ struct urb *urb;
+ struct usb_host_endpoint *ep;
+ dma_addr_t data;
+ unsigned long buf_addr;
+ int len;
+ int frame;
+ int isoc_index;
+};
+
+/* HCD data associated with a hardware ETD */
+struct etd_priv {
+ struct usb_host_endpoint *ep;
+ struct urb *urb;
+ struct td *td;
+ struct list_head queue;
+ dma_addr_t dma_handle;
+ int alloc;
+ int len;
+ int dmem_size;
+ int dmem_offset;
+ int active_count;
+#ifdef DEBUG
+ int activated_frame;
+ int disactivated_frame;
+ int last_int_frame;
+ int last_req_frame;
+ u32 submitted_dwords[4];
+#endif
+};
+
+/* Hardware data memory info */
+struct imx21_dmem_area {
+ struct usb_host_endpoint *ep;
+ unsigned int offset;
+ unsigned int size;
+ struct list_head list;
+};
+
+#ifdef DEBUG
+struct debug_usage_stats {
+ unsigned int value;
+ unsigned int maximum;
+};
+
+struct debug_stats {
+ unsigned long submitted;
+ unsigned long completed_ok;
+ unsigned long completed_failed;
+ unsigned long unlinked;
+ unsigned long queue_etd;
+ unsigned long queue_dmem;
+};
+
+struct debug_isoc_trace {
+ int schedule_frame;
+ int submit_frame;
+ int request_len;
+ int done_frame;
+ int done_len;
+ int cc;
+ struct td *td;
+};
+#endif
+
+/* HCD data structure */
+struct imx21 {
+ spinlock_t lock;
+ struct device *dev;
+ struct mx21_usbh_platform_data *pdata;
+ struct list_head dmem_list;
+ struct list_head queue_for_etd; /* eps queued due to etd shortage */
+ struct list_head queue_for_dmem; /* etds queued due to dmem shortage */
+ struct etd_priv etd[USB_NUM_ETD];
+ struct clk *clk;
+ void __iomem *regs;
+#ifdef DEBUG
+ struct dentry *debug_root;
+ struct debug_stats nonisoc_stats;
+ struct debug_stats isoc_stats;
+ struct debug_usage_stats etd_usage;
+ struct debug_usage_stats dmem_usage;
+ struct debug_isoc_trace isoc_trace[20];
+ struct debug_isoc_trace isoc_trace_failed[20];
+ unsigned long debug_unblocks;
+ int isoc_trace_index;
+ int isoc_trace_index_failed;
+#endif
+};
+
+#endif
diff --git a/drivers/usb/host/isp1362-hcd.c b/drivers/usb/host/isp1362-hcd.c
index 42971657fde2..217fb5170200 100644
--- a/drivers/usb/host/isp1362-hcd.c
+++ b/drivers/usb/host/isp1362-hcd.c
@@ -1257,7 +1257,7 @@ static int isp1362_urb_enqueue(struct usb_hcd *hcd,
/* avoid all allocations within spinlocks: request or endpoint */
if (!hep->hcpriv) {
- ep = kcalloc(1, sizeof *ep, mem_flags);
+ ep = kzalloc(sizeof *ep, mem_flags);
if (!ep)
return -ENOMEM;
}
@@ -2719,24 +2719,11 @@ static int __init isp1362_probe(struct platform_device *pdev)
}
irq = irq_res->start;
-#ifdef CONFIG_USB_HCD_DMA
- if (pdev->dev.dma_mask) {
- struct resource *dma_res = platform_get_resource(pdev, IORESOURCE_MEM, 2);
-
- if (!dma_res) {
- retval = -ENODEV;
- goto err1;
- }
- isp1362_hcd->data_dma = dma_res->start;
- isp1362_hcd->max_dma_size = resource_len(dma_res);
- }
-#else
if (pdev->dev.dma_mask) {
DBG(1, "won't do DMA");
retval = -ENODEV;
goto err1;
}
-#endif
if (!request_mem_region(addr->start, resource_len(addr), hcd_name)) {
retval = -EBUSY;
diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index 27b8f7cb4471..9f01293600b0 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -17,7 +17,9 @@
#include <linux/debugfs.h>
#include <linux/uaccess.h>
#include <linux/io.h>
+#include <linux/mm.h>
#include <asm/unaligned.h>
+#include <asm/cacheflush.h>
#include "../core/hcd.h"
#include "isp1760-hcd.h"
@@ -904,6 +906,14 @@ __acquires(priv->lock)
status = 0;
}
+ if (usb_pipein(urb->pipe) && usb_pipetype(urb->pipe) != PIPE_CONTROL) {
+ void *ptr;
+ for (ptr = urb->transfer_buffer;
+ ptr < urb->transfer_buffer + urb->transfer_buffer_length;
+ ptr += PAGE_SIZE)
+ flush_dcache_page(virt_to_page(ptr));
+ }
+
/* complete() can reenter this HCD */
usb_hcd_unlink_urb_from_ep(priv_to_hcd(priv), urb);
spin_unlock(&priv->lock);
diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c
index 1c9f977a5c9c..4293cfd28d61 100644
--- a/drivers/usb/host/isp1760-if.c
+++ b/drivers/usb/host/isp1760-if.c
@@ -109,7 +109,7 @@ static int of_isp1760_remove(struct of_device *dev)
return 0;
}
-static struct of_device_id of_isp1760_match[] = {
+static const struct of_device_id of_isp1760_match[] = {
{
.compatible = "nxp,usb-isp1760",
},
diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
new file mode 100644
index 000000000000..4aa08d36d077
--- /dev/null
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -0,0 +1,456 @@
+/*
+ * OHCI HCD (Host Controller Driver) for USB.
+ *
+ * TI DA8xx (OMAP-L1x) Bus Glue
+ *
+ * Derived from: ohci-omap.c and ohci-s3c2410.c
+ * Copyright (C) 2008-2009 MontaVista Software, Inc. <source@mvista.com>
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/jiffies.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+
+#include <mach/da8xx.h>
+#include <mach/usb.h>
+
+#ifndef CONFIG_ARCH_DAVINCI_DA8XX
+#error "This file is DA8xx bus glue. Define CONFIG_ARCH_DAVINCI_DA8XX."
+#endif
+
+#define CFGCHIP2 DA8XX_SYSCFG_VIRT(DA8XX_CFGCHIP2_REG)
+
+static struct clk *usb11_clk;
+static struct clk *usb20_clk;
+
+/* Over-current indicator change bitmask */
+static volatile u16 ocic_mask;
+
+static void ohci_da8xx_clock(int on)
+{
+ u32 cfgchip2;
+
+ cfgchip2 = __raw_readl(CFGCHIP2);
+ if (on) {
+ clk_enable(usb11_clk);
+
+ /*
+ * If USB 1.1 reference clock is sourced from USB 2.0 PHY, we
+ * need to enable the USB 2.0 module clocking, start its PHY,
+ * and not allow it to stop the clock during USB 2.0 suspend.
+ */
+ if (!(cfgchip2 & CFGCHIP2_USB1PHYCLKMUX)) {
+ clk_enable(usb20_clk);
+
+ cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN);
+ cfgchip2 |= CFGCHIP2_PHY_PLLON;
+ __raw_writel(cfgchip2, CFGCHIP2);
+
+ pr_info("Waiting for USB PHY clock good...\n");
+ while (!(__raw_readl(CFGCHIP2) & CFGCHIP2_PHYCLKGD))
+ cpu_relax();
+ }
+
+ /* Enable USB 1.1 PHY */
+ cfgchip2 |= CFGCHIP2_USB1SUSPENDM;
+ } else {
+ clk_disable(usb11_clk);
+ if (!(cfgchip2 & CFGCHIP2_USB1PHYCLKMUX))
+ clk_disable(usb20_clk);
+
+ /* Disable USB 1.1 PHY */
+ cfgchip2 &= ~CFGCHIP2_USB1SUSPENDM;
+ }
+ __raw_writel(cfgchip2, CFGCHIP2);
+}
+
+/*
+ * Handle the port over-current indicator change.
+ */
+static void ohci_da8xx_ocic_handler(struct da8xx_ohci_root_hub *hub,
+ unsigned port)
+{
+ ocic_mask |= 1 << port;
+
+ /* Once over-current is detected, the port needs to be powered down */
+ if (hub->get_oci(port) > 0)
+ hub->set_power(port, 0);
+}
+
+static int ohci_da8xx_init(struct usb_hcd *hcd)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev->platform_data;
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int result;
+ u32 rh_a;
+
+ dev_dbg(dev, "starting USB controller\n");
+
+ ohci_da8xx_clock(1);
+
+ /*
+ * DA8xx only have 1 port connected to the pins but the HC root hub
+ * register A reports 2 ports, thus we'll have to override it...
+ */
+ ohci->num_ports = 1;
+
+ result = ohci_init(ohci);
+ if (result < 0)
+ return result;
+
+ /*
+ * Since we're providing a board-specific root hub port power control
+ * and over-current reporting, we have to override the HC root hub A
+ * register's default value, so that ohci_hub_control() could return
+ * the correct hub descriptor...
+ */
+ rh_a = ohci_readl(ohci, &ohci->regs->roothub.a);
+ if (hub->set_power) {
+ rh_a &= ~RH_A_NPS;
+ rh_a |= RH_A_PSM;
+ }
+ if (hub->get_oci) {
+ rh_a &= ~RH_A_NOCP;
+ rh_a |= RH_A_OCPM;
+ }
+ rh_a &= ~RH_A_POTPGT;
+ rh_a |= hub->potpgt << 24;
+ ohci_writel(ohci, rh_a, &ohci->regs->roothub.a);
+
+ return result;
+}
+
+static void ohci_da8xx_stop(struct usb_hcd *hcd)
+{
+ ohci_stop(hcd);
+ ohci_da8xx_clock(0);
+}
+
+static int ohci_da8xx_start(struct usb_hcd *hcd)
+{
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+ int result;
+
+ result = ohci_run(ohci);
+ if (result < 0)
+ ohci_da8xx_stop(hcd);
+
+ return result;
+}
+
+/*
+ * Update the status data from the hub with the over-current indicator change.
+ */
+static int ohci_da8xx_hub_status_data(struct usb_hcd *hcd, char *buf)
+{
+ int length = ohci_hub_status_data(hcd, buf);
+
+ /* See if we have OCIC bit set on port 1 */
+ if (ocic_mask & (1 << 1)) {
+ dev_dbg(hcd->self.controller, "over-current indicator change "
+ "on port 1\n");
+
+ if (!length)
+ length = 1;
+
+ buf[0] |= 1 << 1;
+ }
+ return length;
+}
+
+/*
+ * Look at the control requests to the root hub and see if we need to override.
+ */
+static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ u16 wIndex, char *buf, u16 wLength)
+{
+ struct device *dev = hcd->self.controller;
+ struct da8xx_ohci_root_hub *hub = dev->platform_data;
+ int temp;
+
+ switch (typeReq) {
+ case GetPortStatus:
+ /* Check the port number */
+ if (wIndex != 1)
+ break;
+
+ dev_dbg(dev, "GetPortStatus(%u)\n", wIndex);
+
+ temp = roothub_portstatus(hcd_to_ohci(hcd), wIndex - 1);
+
+ /* The port power status (PPS) bit defaults to 1 */
+ if (hub->get_power && hub->get_power(wIndex) == 0)
+ temp &= ~RH_PS_PPS;
+
+ /* The port over-current indicator (POCI) bit is always 0 */
+ if (hub->get_oci && hub->get_oci(wIndex) > 0)
+ temp |= RH_PS_POCI;
+
+ /* The over-current indicator change (OCIC) bit is 0 too */
+ if (ocic_mask & (1 << wIndex))
+ temp |= RH_PS_OCIC;
+
+ put_unaligned(cpu_to_le32(temp), (__le32 *)buf);
+ return 0;
+ case SetPortFeature:
+ temp = 1;
+ goto check_port;
+ case ClearPortFeature:
+ temp = 0;
+
+check_port:
+ /* Check the port number */
+ if (wIndex != 1)
+ break;
+
+ switch (wValue) {
+ case USB_PORT_FEAT_POWER:
+ dev_dbg(dev, "%sPortFeature(%u): %s\n",
+ temp ? "Set" : "Clear", wIndex, "POWER");
+
+ if (!hub->set_power)
+ return -EPIPE;
+
+ return hub->set_power(wIndex, temp) ? -EPIPE : 0;
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ dev_dbg(dev, "%sPortFeature(%u): %s\n",
+ temp ? "Set" : "Clear", wIndex,
+ "C_OVER_CURRENT");
+
+ if (temp)
+ ocic_mask |= 1 << wIndex;
+ else
+ ocic_mask &= ~(1 << wIndex);
+ return 0;
+ }
+ }
+
+ return ohci_hub_control(hcd, typeReq, wValue, wIndex, buf, wLength);
+}
+
+static const struct hc_driver ohci_da8xx_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "DA8xx OHCI",
+ .hcd_priv_size = sizeof(struct ohci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ohci_irq,
+ .flags = HCD_USB11 | HCD_MEMORY,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ohci_da8xx_init,
+ .start = ohci_da8xx_start,
+ .stop = ohci_da8xx_stop,
+ .shutdown = ohci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ohci_urb_enqueue,
+ .urb_dequeue = ohci_urb_dequeue,
+ .endpoint_disable = ohci_endpoint_disable,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ohci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ohci_da8xx_hub_status_data,
+ .hub_control = ohci_da8xx_hub_control,
+
+#ifdef CONFIG_PM
+ .bus_suspend = ohci_bus_suspend,
+ .bus_resume = ohci_bus_resume,
+#endif
+ .start_port_reset = ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+
+
+/**
+ * usb_hcd_da8xx_probe - initialize DA8xx-based HCDs
+ * Context: !in_interrupt()
+ *
+ * Allocates basic resources for this USB host controller, and
+ * then invokes the start() method for the HCD associated with it
+ * through the hotplug entry's driver_data.
+ */
+static int usb_hcd_da8xx_probe(const struct hc_driver *driver,
+ struct platform_device *pdev)
+{
+ struct da8xx_ohci_root_hub *hub = pdev->dev.platform_data;
+ struct usb_hcd *hcd;
+ struct resource *mem;
+ int error, irq;
+
+ if (hub == NULL)
+ return -ENODEV;
+
+ usb11_clk = clk_get(&pdev->dev, "usb11");
+ if (IS_ERR(usb11_clk))
+ return PTR_ERR(usb11_clk);
+
+ usb20_clk = clk_get(&pdev->dev, "usb20");
+ if (IS_ERR(usb20_clk)) {
+ error = PTR_ERR(usb20_clk);
+ goto err0;
+ }
+
+ hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+ if (!hcd) {
+ error = -ENOMEM;
+ goto err1;
+ }
+
+ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!mem) {
+ error = -ENODEV;
+ goto err2;
+ }
+ hcd->rsrc_start = mem->start;
+ hcd->rsrc_len = mem->end - mem->start + 1;
+
+ if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ dev_dbg(&pdev->dev, "request_mem_region failed\n");
+ error = -EBUSY;
+ goto err2;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ error = -ENOMEM;
+ goto err3;
+ }
+
+ ohci_hcd_init(hcd_to_ohci(hcd));
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ error = -ENODEV;
+ goto err4;
+ }
+ error = usb_add_hcd(hcd, irq, IRQF_DISABLED);
+ if (error)
+ goto err4;
+
+ if (hub->ocic_notify) {
+ error = hub->ocic_notify(ohci_da8xx_ocic_handler);
+ if (!error)
+ return 0;
+ }
+
+ usb_remove_hcd(hcd);
+err4:
+ iounmap(hcd->regs);
+err3:
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+err2:
+ usb_put_hcd(hcd);
+err1:
+ clk_put(usb20_clk);
+err0:
+ clk_put(usb11_clk);
+ return error;
+}
+
+/**
+ * usb_hcd_da8xx_remove - shutdown processing for DA8xx-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_da8xx_probe(), first invoking
+ * the HCD's stop() method. It is always called from a thread
+ * context, normally "rmmod", "apmd", or something similar.
+ */
+static inline void
+usb_hcd_da8xx_remove(struct usb_hcd *hcd, struct platform_device *pdev)
+{
+ struct da8xx_ohci_root_hub *hub = pdev->dev.platform_data;
+
+ hub->ocic_notify(NULL);
+ usb_remove_hcd(hcd);
+ iounmap(hcd->regs);
+ release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
+ usb_put_hcd(hcd);
+ clk_put(usb20_clk);
+ clk_put(usb11_clk);
+}
+
+static int ohci_hcd_da8xx_drv_probe(struct platform_device *dev)
+{
+ return usb_hcd_da8xx_probe(&ohci_da8xx_hc_driver, dev);
+}
+
+static int ohci_hcd_da8xx_drv_remove(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+
+ usb_hcd_da8xx_remove(hcd, dev);
+ platform_set_drvdata(dev, NULL);
+
+ return 0;
+}
+
+#ifdef CONFIG_PM
+static int ohci_da8xx_suspend(struct platform_device *dev, pm_message_t message)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
+
+ ohci_da8xx_clock(0);
+ hcd->state = HC_STATE_SUSPENDED;
+ dev->dev.power.power_state = PMSG_SUSPEND;
+ return 0;
+}
+
+static int ohci_da8xx_resume(struct platform_device *dev)
+{
+ struct usb_hcd *hcd = platform_get_drvdata(dev);
+ struct ohci_hcd *ohci = hcd_to_ohci(hcd);
+
+ if (time_before(jiffies, ohci->next_statechange))
+ msleep(5);
+ ohci->next_statechange = jiffies;
+
+ ohci_da8xx_clock(1);
+ dev->dev.power.power_state = PMSG_ON;
+ usb_hcd_resume_root_hub(hcd);
+ return 0;
+}
+#endif
+
+/*
+ * Driver definition to register with platform structure.
+ */
+static struct platform_driver ohci_hcd_da8xx_driver = {
+ .probe = ohci_hcd_da8xx_drv_probe,
+ .remove = ohci_hcd_da8xx_drv_remove,
+ .shutdown = usb_hcd_platform_shutdown,
+#ifdef CONFIG_PM
+ .suspend = ohci_da8xx_suspend,
+ .resume = ohci_da8xx_resume,
+#endif
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "ohci",
+ },
+};
diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c
index 811f5dfdc582..8ad2441b0284 100644
--- a/drivers/usb/host/ohci-dbg.c
+++ b/drivers/usb/host/ohci-dbg.c
@@ -53,13 +53,13 @@ urb_print(struct urb * urb, char * str, int small, int status)
int i, len;
if (usb_pipecontrol (pipe)) {
- printk (KERN_DEBUG __FILE__ ": setup(8):");
+ printk (KERN_DEBUG "%s: setup(8):", __FILE__);
for (i = 0; i < 8 ; i++)
printk (" %02x", ((__u8 *) urb->setup_packet) [i]);
printk ("\n");
}
if (urb->transfer_buffer_length > 0 && urb->transfer_buffer) {
- printk (KERN_DEBUG __FILE__ ": data(%d/%d):",
+ printk (KERN_DEBUG "%s: data(%d/%d):", __FILE__,
urb->actual_length,
urb->transfer_buffer_length);
len = usb_pipeout (pipe)?
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index 24eb74781919..afe59be23645 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -1051,6 +1051,11 @@ MODULE_LICENSE ("GPL");
#define PLATFORM_DRIVER usb_hcd_pnx4008_driver
#endif
+#ifdef CONFIG_ARCH_DAVINCI_DA8XX
+#include "ohci-da8xx.c"
+#define PLATFORM_DRIVER ohci_hcd_da8xx_driver
+#endif
+
#if defined(CONFIG_CPU_SUBTYPE_SH7720) || \
defined(CONFIG_CPU_SUBTYPE_SH7721) || \
defined(CONFIG_CPU_SUBTYPE_SH7763) || \
diff --git a/drivers/usb/host/ohci-lh7a404.c b/drivers/usb/host/ohci-lh7a404.c
index de42283149c7..18d39f0463ee 100644
--- a/drivers/usb/host/ohci-lh7a404.c
+++ b/drivers/usb/host/ohci-lh7a404.c
@@ -28,8 +28,8 @@ extern int usb_disabled(void);
static void lh7a404_start_hc(struct platform_device *dev)
{
- printk(KERN_DEBUG __FILE__
- ": starting LH7A404 OHCI USB Controller\n");
+ printk(KERN_DEBUG "%s: starting LH7A404 OHCI USB Controller\n",
+ __FILE__);
/*
* Now, carefully enable the USB clock, and take
@@ -39,14 +39,13 @@ static void lh7a404_start_hc(struct platform_device *dev)
udelay(1000);
USBH_CMDSTATUS = OHCI_HCR;
- printk(KERN_DEBUG __FILE__
- ": Clock to USB host has been enabled \n");
+ printk(KERN_DEBUG "%s: Clock to USB host has been enabled \n", __FILE__);
}
static void lh7a404_stop_hc(struct platform_device *dev)
{
- printk(KERN_DEBUG __FILE__
- ": stopping LH7A404 OHCI USB Controller\n");
+ printk(KERN_DEBUG "%s: stopping LH7A404 OHCI USB Controller\n",
+ __FILE__);
CSC_PWRCNT &= ~CSC_PWRCNT_USBH_EN; /* Disable clock */
}
diff --git a/drivers/usb/host/ohci-pnx4008.c b/drivers/usb/host/ohci-pnx4008.c
index 2769326da42e..cd74bbdd007c 100644
--- a/drivers/usb/host/ohci-pnx4008.c
+++ b/drivers/usb/host/ohci-pnx4008.c
@@ -327,7 +327,7 @@ static int __devinit usb_hcd_pnx4008_probe(struct platform_device *pdev)
}
i2c_adap = i2c_get_adapter(2);
memset(&i2c_info, 0, sizeof(struct i2c_board_info));
- strlcpy(i2c_info.name, "isp1301_pnx", I2C_NAME_SIZE);
+ strlcpy(i2c_info.type, "isp1301_pnx", I2C_NAME_SIZE);
isp1301_i2c_client = i2c_new_probed_device(i2c_adap, &i2c_info,
normal_i2c);
i2c_put_adapter(i2c_adap);
@@ -411,7 +411,7 @@ out3:
out2:
clk_put(usb_clk);
out1:
- i2c_unregister_client(isp1301_i2c_client);
+ i2c_unregister_device(isp1301_i2c_client);
isp1301_i2c_client = NULL;
out_i2c_driver:
i2c_del_driver(&isp1301_driver);
@@ -430,7 +430,7 @@ static int usb_hcd_pnx4008_remove(struct platform_device *pdev)
pnx4008_unset_usb_bits();
clk_disable(usb_clk);
clk_put(usb_clk);
- i2c_unregister_client(isp1301_i2c_client);
+ i2c_unregister_device(isp1301_i2c_client);
isp1301_i2c_client = NULL;
i2c_del_driver(&isp1301_driver);
diff --git a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
index 68a301710297..103263c230cf 100644
--- a/drivers/usb/host/ohci-ppc-of.c
+++ b/drivers/usb/host/ohci-ppc-of.c
@@ -114,21 +114,21 @@ ohci_hcd_ppc_of_probe(struct of_device *op, const struct of_device_id *match)
hcd->rsrc_len = res.end - res.start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
- printk(KERN_ERR __FILE__ ": request_mem_region failed\n");
+ printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__);
rv = -EBUSY;
goto err_rmr;
}
irq = irq_of_parse_and_map(dn, 0);
if (irq == NO_IRQ) {
- printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n");
+ printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
rv = -EBUSY;
goto err_irq;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
- printk(KERN_ERR __FILE__ ": ioremap failed\n");
+ printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
rv = -ENOMEM;
goto err_ioremap;
}
@@ -169,7 +169,7 @@ ohci_hcd_ppc_of_probe(struct of_device *op, const struct of_device_id *match)
} else
release_mem_region(res.start, 0x4);
} else
- pr_debug(__FILE__ ": cannot get ehci offset from fdt\n");
+ pr_debug("%s: cannot get ehci offset from fdt\n", __FILE__);
}
iounmap(hcd->regs);
@@ -212,7 +212,7 @@ static int ohci_hcd_ppc_of_shutdown(struct of_device *op)
}
-static struct of_device_id ohci_hcd_ppc_of_match[] = {
+static const struct of_device_id ohci_hcd_ppc_of_match[] = {
#ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE
{
.name = "usb",
diff --git a/drivers/usb/host/ohci-ppc-soc.c b/drivers/usb/host/ohci-ppc-soc.c
index cd3398b675b2..89e670e38c10 100644
--- a/drivers/usb/host/ohci-ppc-soc.c
+++ b/drivers/usb/host/ohci-ppc-soc.c
@@ -41,14 +41,14 @@ static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res) {
- pr_debug(__FILE__ ": no irq\n");
+ pr_debug("%s: no irq\n", __FILE__);
return -ENODEV;
}
irq = res->start;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
- pr_debug(__FILE__ ": no reg addr\n");
+ pr_debug("%s: no reg addr\n", __FILE__);
return -ENODEV;
}
@@ -59,14 +59,14 @@ static int usb_hcd_ppc_soc_probe(const struct hc_driver *driver,
hcd->rsrc_len = res->end - res->start + 1;
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
- pr_debug(__FILE__ ": request_mem_region failed\n");
+ pr_debug("%s: request_mem_region failed\n", __FILE__);
retval = -EBUSY;
goto err1;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
- pr_debug(__FILE__ ": ioremap failed\n");
+ pr_debug("%s: ioremap failed\n", __FILE__);
retval = -ENOMEM;
goto err2;
}
diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c
index e4bbe8e188e4..d8eb3bdafabb 100644
--- a/drivers/usb/host/ohci-sa1111.c
+++ b/drivers/usb/host/ohci-sa1111.c
@@ -31,8 +31,8 @@ static void sa1111_start_hc(struct sa1111_dev *dev)
{
unsigned int usb_rst = 0;
- printk(KERN_DEBUG __FILE__
- ": starting SA-1111 OHCI USB Controller\n");
+ printk(KERN_DEBUG "%s: starting SA-1111 OHCI USB Controller\n",
+ __FILE__);
#ifdef CONFIG_SA1100_BADGE4
if (machine_is_badge4()) {
@@ -65,8 +65,8 @@ static void sa1111_start_hc(struct sa1111_dev *dev)
static void sa1111_stop_hc(struct sa1111_dev *dev)
{
unsigned int usb_rst;
- printk(KERN_DEBUG __FILE__
- ": stopping SA-1111 OHCI USB Controller\n");
+ printk(KERN_DEBUG "%s: stopping SA-1111 OHCI USB Controller\n",
+ __FILE__);
/*
* Put the USB host controller into reset.
diff --git a/drivers/usb/host/r8a66597-hcd.c b/drivers/usb/host/r8a66597-hcd.c
index bee558aed427..f71a73a93d0c 100644
--- a/drivers/usb/host/r8a66597-hcd.c
+++ b/drivers/usb/host/r8a66597-hcd.c
@@ -418,7 +418,7 @@ static u8 alloc_usb_address(struct r8a66597 *r8a66597, struct urb *urb)
/* this function must be called with interrupt disabled */
static void free_usb_address(struct r8a66597 *r8a66597,
- struct r8a66597_device *dev)
+ struct r8a66597_device *dev, int reset)
{
int port;
@@ -430,7 +430,13 @@ static void free_usb_address(struct r8a66597 *r8a66597,
dev->state = USB_STATE_DEFAULT;
r8a66597->address_map &= ~(1 << dev->address);
dev->address = 0;
- dev_set_drvdata(&dev->udev->dev, NULL);
+ /*
+ * Only when resetting USB, it is necessary to erase drvdata. When
+ * a usb device with usb hub is disconnect, "dev->udev" is already
+ * freed on usb_desconnect(). So we cannot access the data.
+ */
+ if (reset)
+ dev_set_drvdata(&dev->udev->dev, NULL);
list_del(&dev->device_list);
kfree(dev);
@@ -1069,7 +1075,7 @@ static void r8a66597_usb_disconnect(struct r8a66597 *r8a66597, int port)
struct r8a66597_device *dev = r8a66597->root_hub[port].dev;
disable_r8a66597_pipe_all(r8a66597, dev);
- free_usb_address(r8a66597, dev);
+ free_usb_address(r8a66597, dev, 0);
start_root_hub_sampling(r8a66597, port, 0);
}
@@ -2085,7 +2091,7 @@ static void update_usb_address_map(struct r8a66597 *r8a66597,
spin_lock_irqsave(&r8a66597->lock, flags);
dev = get_r8a66597_device(r8a66597, addr);
disable_r8a66597_pipe_all(r8a66597, dev);
- free_usb_address(r8a66597, dev);
+ free_usb_address(r8a66597, dev, 0);
put_child_connect_map(r8a66597, addr);
spin_unlock_irqrestore(&r8a66597->lock, flags);
}
@@ -2228,7 +2234,7 @@ static int r8a66597_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
rh->port |= (1 << USB_PORT_FEAT_RESET);
disable_r8a66597_pipe_all(r8a66597, dev);
- free_usb_address(r8a66597, dev);
+ free_usb_address(r8a66597, dev, 1);
r8a66597_mdfy(r8a66597, USBRST, USBRST | UACT,
get_dvstctr_reg(port));
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index 5b22a4d1c9e4..e11cc3aa4b82 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -51,6 +51,7 @@
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/byteorder.h>
+#include <asm/unaligned.h>
#include "../core/hcd.h"
#include "sl811.h"
@@ -1272,12 +1273,12 @@ sl811h_hub_control(
sl811h_hub_descriptor(sl811, (struct usb_hub_descriptor *) buf);
break;
case GetHubStatus:
- *(__le32 *) buf = cpu_to_le32(0);
+ put_unaligned_le32(0, buf);
break;
case GetPortStatus:
if (wIndex != 1)
goto error;
- *(__le32 *) buf = cpu_to_le32(sl811->port1);
+ put_unaligned_le32(sl811->port1, buf);
#ifndef VERBOSE
if (*(u16*)(buf+2)) /* only if wPortChange is interesting */
diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c
index 99cd00fd3514..09197067fe6b 100644
--- a/drivers/usb/host/uhci-hcd.c
+++ b/drivers/usb/host/uhci-hcd.c
@@ -735,6 +735,7 @@ static void uhci_stop(struct usb_hcd *hcd)
uhci_hc_died(uhci);
uhci_scan_schedule(uhci);
spin_unlock_irq(&uhci->lock);
+ synchronize_irq(hcd->irq);
del_timer_sync(&uhci->fsbr_timer);
release_uhci(uhci);
diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c
index 33128d52f212..105fa8b025bb 100644
--- a/drivers/usb/host/xhci-dbg.c
+++ b/drivers/usb/host/xhci-dbg.c
@@ -406,6 +406,25 @@ static void dbg_rsvd64(struct xhci_hcd *xhci, u64 *ctx, dma_addr_t dma)
}
}
+char *xhci_get_slot_state(struct xhci_hcd *xhci,
+ struct xhci_container_ctx *ctx)
+{
+ struct xhci_slot_ctx *slot_ctx = xhci_get_slot_ctx(xhci, ctx);
+
+ switch (GET_SLOT_STATE(slot_ctx->dev_state)) {
+ case 0:
+ return "enabled/disabled";
+ case 1:
+ return "default";
+ case 2:
+ return "addressed";
+ case 3:
+ return "configured";
+ default:
+ return "reserved";
+ }
+}
+
void xhci_dbg_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx)
{
/* Fields are 32 bits wide, DMA addresses are in bytes */
diff --git a/drivers/usb/host/xhci-ext-caps.h b/drivers/usb/host/xhci-ext-caps.h
index ecc131c3fe33..78c4edac1db1 100644
--- a/drivers/usb/host/xhci-ext-caps.h
+++ b/drivers/usb/host/xhci-ext-caps.h
@@ -101,12 +101,15 @@ static inline int xhci_find_next_cap_offset(void __iomem *base, int ext_offset)
next = readl(base + ext_offset);
- if (ext_offset == XHCI_HCC_PARAMS_OFFSET)
+ if (ext_offset == XHCI_HCC_PARAMS_OFFSET) {
/* Find the first extended capability */
next = XHCI_HCC_EXT_CAPS(next);
- else
+ ext_offset = 0;
+ } else {
/* Find the next extended capability */
next = XHCI_EXT_CAPS_NEXT(next);
+ }
+
if (!next)
return 0;
/*
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index eac5b53aa9e7..208b805b80eb 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -129,6 +129,50 @@ static u32 xhci_port_state_to_neutral(u32 state)
return (state & XHCI_PORT_RO) | (state & XHCI_PORT_RWS);
}
+static void xhci_disable_port(struct xhci_hcd *xhci, u16 wIndex,
+ u32 __iomem *addr, u32 port_status)
+{
+ /* Write 1 to disable the port */
+ xhci_writel(xhci, port_status | PORT_PE, addr);
+ port_status = xhci_readl(xhci, addr);
+ xhci_dbg(xhci, "disable port, actual port %d status = 0x%x\n",
+ wIndex, port_status);
+}
+
+static void xhci_clear_port_change_bit(struct xhci_hcd *xhci, u16 wValue,
+ u16 wIndex, u32 __iomem *addr, u32 port_status)
+{
+ char *port_change_bit;
+ u32 status;
+
+ switch (wValue) {
+ case USB_PORT_FEAT_C_RESET:
+ status = PORT_RC;
+ port_change_bit = "reset";
+ break;
+ case USB_PORT_FEAT_C_CONNECTION:
+ status = PORT_CSC;
+ port_change_bit = "connect";
+ break;
+ case USB_PORT_FEAT_C_OVER_CURRENT:
+ status = PORT_OCC;
+ port_change_bit = "over-current";
+ break;
+ case USB_PORT_FEAT_C_ENABLE:
+ status = PORT_PEC;
+ port_change_bit = "enable/disable";
+ break;
+ default:
+ /* Should never happen */
+ return;
+ }
+ /* Change bits are all write 1 to clear */
+ xhci_writel(xhci, port_status | status, addr);
+ port_status = xhci_readl(xhci, addr);
+ xhci_dbg(xhci, "clear port %s change, actual port %d status = 0x%x\n",
+ port_change_bit, wIndex, port_status);
+}
+
int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u16 wIndex, char *buf, u16 wLength)
{
@@ -138,7 +182,6 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
u32 temp, status;
int retval = 0;
u32 __iomem *addr;
- char *port_change_bit;
ports = HCS_MAX_PORTS(xhci->hcs_params1);
@@ -229,26 +272,18 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
temp = xhci_port_state_to_neutral(temp);
switch (wValue) {
case USB_PORT_FEAT_C_RESET:
- status = PORT_RC;
- port_change_bit = "reset";
- break;
case USB_PORT_FEAT_C_CONNECTION:
- status = PORT_CSC;
- port_change_bit = "connect";
- break;
case USB_PORT_FEAT_C_OVER_CURRENT:
- status = PORT_OCC;
- port_change_bit = "over-current";
+ case USB_PORT_FEAT_C_ENABLE:
+ xhci_clear_port_change_bit(xhci, wValue, wIndex,
+ addr, temp);
+ break;
+ case USB_PORT_FEAT_ENABLE:
+ xhci_disable_port(xhci, wIndex, addr, temp);
break;
default:
goto error;
}
- /* Change bits are all write 1 to clear */
- xhci_writel(xhci, temp | status, addr);
- temp = xhci_readl(xhci, addr);
- xhci_dbg(xhci, "clear port %s change, actual port %d status = 0x%x\n",
- port_change_bit, wIndex, temp);
- temp = xhci_readl(xhci, addr); /* unblock any posted writes */
break;
default:
error:
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index bffcef7a5545..bba9b19ed1b9 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -198,6 +198,31 @@ fail:
return 0;
}
+void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci,
+ struct xhci_virt_device *virt_dev,
+ unsigned int ep_index)
+{
+ int rings_cached;
+
+ rings_cached = virt_dev->num_rings_cached;
+ if (rings_cached < XHCI_MAX_RINGS_CACHED) {
+ virt_dev->num_rings_cached++;
+ rings_cached = virt_dev->num_rings_cached;
+ virt_dev->ring_cache[rings_cached] =
+ virt_dev->eps[ep_index].ring;
+ xhci_dbg(xhci, "Cached old ring, "
+ "%d ring%s cached\n",
+ rings_cached,
+ (rings_cached > 1) ? "s" : "");
+ } else {
+ xhci_ring_free(xhci, virt_dev->eps[ep_index].ring);
+ xhci_dbg(xhci, "Ring cache full (%d rings), "
+ "freeing ring\n",
+ virt_dev->num_rings_cached);
+ }
+ virt_dev->eps[ep_index].ring = NULL;
+}
+
/* Zero an endpoint ring (except for link TRBs) and move the enqueue and dequeue
* pointers to the beginning of the ring.
*/
@@ -242,6 +267,8 @@ struct xhci_container_ctx *xhci_alloc_container_ctx(struct xhci_hcd *xhci,
void xhci_free_container_ctx(struct xhci_hcd *xhci,
struct xhci_container_ctx *ctx)
{
+ if (!ctx)
+ return;
dma_pool_free(xhci->device_pool, ctx->bytes, ctx->dma);
kfree(ctx);
}
@@ -427,7 +454,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
case USB_SPEED_LOW:
slot_ctx->dev_info |= (u32) SLOT_SPEED_LS;
break;
- case USB_SPEED_VARIABLE:
+ case USB_SPEED_WIRELESS:
xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
return -EINVAL;
break;
@@ -471,7 +498,7 @@ int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *ud
case USB_SPEED_LOW:
ep0_ctx->ep_info2 |= MAX_PACKET(8);
break;
- case USB_SPEED_VARIABLE:
+ case USB_SPEED_WIRELESS:
xhci_dbg(xhci, "FIXME xHCI doesn't support wireless speeds\n");
return -EINVAL;
break;
@@ -539,8 +566,13 @@ static inline unsigned int xhci_get_endpoint_interval(struct usb_device *udev,
if (interval < 3)
interval = 3;
if ((1 << interval) != 8*ep->desc.bInterval)
- dev_warn(&udev->dev, "ep %#x - rounding interval to %d microframes\n",
- ep->desc.bEndpointAddress, 1 << interval);
+ dev_warn(&udev->dev,
+ "ep %#x - rounding interval"
+ " to %d microframes, "
+ "ep desc says %d microframes\n",
+ ep->desc.bEndpointAddress,
+ 1 << interval,
+ 8*ep->desc.bInterval);
}
break;
default:
@@ -819,7 +851,8 @@ static void scratchpad_free(struct xhci_hcd *xhci)
}
struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
- bool allocate_completion, gfp_t mem_flags)
+ bool allocate_in_ctx, bool allocate_completion,
+ gfp_t mem_flags)
{
struct xhci_command *command;
@@ -827,11 +860,14 @@ struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
if (!command)
return NULL;
- command->in_ctx =
- xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT, mem_flags);
- if (!command->in_ctx) {
- kfree(command);
- return NULL;
+ if (allocate_in_ctx) {
+ command->in_ctx =
+ xhci_alloc_container_ctx(xhci, XHCI_CTX_TYPE_INPUT,
+ mem_flags);
+ if (!command->in_ctx) {
+ kfree(command);
+ return NULL;
+ }
}
if (allocate_completion) {
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index e097008d6fb1..417d37aff8d7 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -139,6 +139,7 @@ static const struct hc_driver xhci_pci_hc_driver = {
.reset_bandwidth = xhci_reset_bandwidth,
.address_device = xhci_address_device,
.update_hub_device = xhci_update_hub_device,
+ .reset_device = xhci_reset_device,
/*
* scheduling support
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index ee7bc7ecbc59..6ba841bca4a2 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -953,6 +953,17 @@ bandwidth_change:
case TRB_TYPE(TRB_RESET_EP):
handle_reset_ep_completion(xhci, event, xhci->cmd_ring->dequeue);
break;
+ case TRB_TYPE(TRB_RESET_DEV):
+ xhci_dbg(xhci, "Completed reset device command.\n");
+ slot_id = TRB_TO_SLOT_ID(
+ xhci->cmd_ring->dequeue->generic.field[3]);
+ virt_dev = xhci->devs[slot_id];
+ if (virt_dev)
+ handle_cmd_in_cmd_wait_list(xhci, virt_dev, event);
+ else
+ xhci_warn(xhci, "Reset device command completion "
+ "for disabled slot %u\n", slot_id);
+ break;
default:
/* Skip over unknown commands on the event ring */
xhci->error_bitmask |= 1 << 6;
@@ -1080,6 +1091,20 @@ static int xhci_requires_manual_halt_cleanup(struct xhci_hcd *xhci,
return 0;
}
+int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code)
+{
+ if (trb_comp_code >= 224 && trb_comp_code <= 255) {
+ /* Vendor defined "informational" completion code,
+ * treat as not-an-error.
+ */
+ xhci_dbg(xhci, "Vendor defined info completion code %u\n",
+ trb_comp_code);
+ xhci_dbg(xhci, "Treating code as success.\n");
+ return 1;
+ }
+ return 0;
+}
+
/*
* If this function returns an error condition, it means it got a Transfer
* event with a corrupted Slot ID, Endpoint ID, or TRB DMA address.
@@ -1196,13 +1221,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
status = -ENOSR;
break;
default:
- if (trb_comp_code >= 224 && trb_comp_code <= 255) {
- /* Vendor defined "informational" completion code,
- * treat as not-an-error.
- */
- xhci_dbg(xhci, "Vendor defined info completion code %u\n",
- trb_comp_code);
- xhci_dbg(xhci, "Treating code as success.\n");
+ if (xhci_is_vendor_info_code(xhci, trb_comp_code)) {
status = 0;
break;
}
@@ -2181,6 +2200,14 @@ int xhci_queue_address_device(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
false);
}
+/* Queue a reset device command TRB */
+int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id)
+{
+ return queue_command(xhci, 0, 0, 0,
+ TRB_TYPE(TRB_RESET_DEV) | SLOT_ID_FOR_TRB(slot_id),
+ false);
+}
+
/* Queue a configure endpoint command TRB */
int xhci_queue_configure_endpoint(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
u32 slot_id, bool command_must_succeed)
diff --git a/drivers/usb/host/xhci-hcd.c b/drivers/usb/host/xhci.c
index 5e92c72df642..492a61c2c79d 100644
--- a/drivers/usb/host/xhci-hcd.c
+++ b/drivers/usb/host/xhci.c
@@ -1007,7 +1007,7 @@ int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev,
* for usb_set_interface() and usb_set_configuration() claim).
*/
if (xhci_endpoint_init(xhci, xhci->devs[udev->slot_id],
- udev, ep, GFP_KERNEL) < 0) {
+ udev, ep, GFP_NOIO) < 0) {
dev_dbg(&udev->dev, "%s - could not initialize ep %#x\n",
__func__, ep->desc.bEndpointAddress);
return -ENOMEM;
@@ -1173,6 +1173,7 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
cmd_completion = &virt_dev->cmd_completion;
cmd_status = &virt_dev->cmd_status;
}
+ init_completion(cmd_completion);
if (!ctx_change)
ret = xhci_queue_configure_endpoint(xhci, in_ctx->dma,
@@ -1181,6 +1182,8 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci,
ret = xhci_queue_evaluate_context(xhci, in_ctx->dma,
udev->slot_id);
if (ret < 0) {
+ if (command)
+ list_del(&command->cmd_list);
spin_unlock_irqrestore(&xhci->lock, flags);
xhci_dbg(xhci, "FIXME allocate a new ring segment\n");
return -ENOMEM;
@@ -1264,30 +1267,13 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev)
xhci_zero_in_ctx(xhci, virt_dev);
/* Install new rings and free or cache any old rings */
for (i = 1; i < 31; ++i) {
- int rings_cached;
-
if (!virt_dev->eps[i].new_ring)
continue;
/* Only cache or free the old ring if it exists.
* It may not if this is the first add of an endpoint.
*/
if (virt_dev->eps[i].ring) {
- rings_cached = virt_dev->num_rings_cached;
- if (rings_cached < XHCI_MAX_RINGS_CACHED) {
- virt_dev->num_rings_cached++;
- rings_cached = virt_dev->num_rings_cached;
- virt_dev->ring_cache[rings_cached] =
- virt_dev->eps[i].ring;
- xhci_dbg(xhci, "Cached old ring, "
- "%d ring%s cached\n",
- rings_cached,
- (rings_cached > 1) ? "s" : "");
- } else {
- xhci_ring_free(xhci, virt_dev->eps[i].ring);
- xhci_dbg(xhci, "Ring cache full (%d rings), "
- "freeing ring\n",
- virt_dev->num_rings_cached);
- }
+ xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
}
virt_dev->eps[i].ring = virt_dev->eps[i].new_ring;
virt_dev->eps[i].new_ring = NULL;
@@ -1458,6 +1444,131 @@ void xhci_endpoint_reset(struct usb_hcd *hcd,
}
/*
+ * This submits a Reset Device Command, which will set the device state to 0,
+ * set the device address to 0, and disable all the endpoints except the default
+ * control endpoint. The USB core should come back and call
+ * xhci_address_device(), and then re-set up the configuration. If this is
+ * called because of a usb_reset_and_verify_device(), then the old alternate
+ * settings will be re-installed through the normal bandwidth allocation
+ * functions.
+ *
+ * Wait for the Reset Device command to finish. Remove all structures
+ * associated with the endpoints that were disabled. Clear the input device
+ * structure? Cache the rings? Reset the control endpoint 0 max packet size?
+ */
+int xhci_reset_device(struct usb_hcd *hcd, struct usb_device *udev)
+{
+ int ret, i;
+ unsigned long flags;
+ struct xhci_hcd *xhci;
+ unsigned int slot_id;
+ struct xhci_virt_device *virt_dev;
+ struct xhci_command *reset_device_cmd;
+ int timeleft;
+ int last_freed_endpoint;
+
+ ret = xhci_check_args(hcd, udev, NULL, 0, __func__);
+ if (ret <= 0)
+ return ret;
+ xhci = hcd_to_xhci(hcd);
+ slot_id = udev->slot_id;
+ virt_dev = xhci->devs[slot_id];
+ if (!virt_dev) {
+ xhci_dbg(xhci, "%s called with invalid slot ID %u\n",
+ __func__, slot_id);
+ return -EINVAL;
+ }
+
+ xhci_dbg(xhci, "Resetting device with slot ID %u\n", slot_id);
+ /* Allocate the command structure that holds the struct completion.
+ * Assume we're in process context, since the normal device reset
+ * process has to wait for the device anyway. Storage devices are
+ * reset as part of error handling, so use GFP_NOIO instead of
+ * GFP_KERNEL.
+ */
+ reset_device_cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO);
+ if (!reset_device_cmd) {
+ xhci_dbg(xhci, "Couldn't allocate command structure.\n");
+ return -ENOMEM;
+ }
+
+ /* Attempt to submit the Reset Device command to the command ring */
+ spin_lock_irqsave(&xhci->lock, flags);
+ reset_device_cmd->command_trb = xhci->cmd_ring->enqueue;
+ list_add_tail(&reset_device_cmd->cmd_list, &virt_dev->cmd_list);
+ ret = xhci_queue_reset_device(xhci, slot_id);
+ if (ret) {
+ xhci_dbg(xhci, "FIXME: allocate a command ring segment\n");
+ list_del(&reset_device_cmd->cmd_list);
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ goto command_cleanup;
+ }
+ xhci_ring_cmd_db(xhci);
+ spin_unlock_irqrestore(&xhci->lock, flags);
+
+ /* Wait for the Reset Device command to finish */
+ timeleft = wait_for_completion_interruptible_timeout(
+ reset_device_cmd->completion,
+ USB_CTRL_SET_TIMEOUT);
+ if (timeleft <= 0) {
+ xhci_warn(xhci, "%s while waiting for reset device command\n",
+ timeleft == 0 ? "Timeout" : "Signal");
+ spin_lock_irqsave(&xhci->lock, flags);
+ /* The timeout might have raced with the event ring handler, so
+ * only delete from the list if the item isn't poisoned.
+ */
+ if (reset_device_cmd->cmd_list.next != LIST_POISON1)
+ list_del(&reset_device_cmd->cmd_list);
+ spin_unlock_irqrestore(&xhci->lock, flags);
+ ret = -ETIME;
+ goto command_cleanup;
+ }
+
+ /* The Reset Device command can't fail, according to the 0.95/0.96 spec,
+ * unless we tried to reset a slot ID that wasn't enabled,
+ * or the device wasn't in the addressed or configured state.
+ */
+ ret = reset_device_cmd->status;
+ switch (ret) {
+ case COMP_EBADSLT: /* 0.95 completion code for bad slot ID */
+ case COMP_CTX_STATE: /* 0.96 completion code for same thing */
+ xhci_info(xhci, "Can't reset device (slot ID %u) in %s state\n",
+ slot_id,
+ xhci_get_slot_state(xhci, virt_dev->out_ctx));
+ xhci_info(xhci, "Not freeing device rings.\n");
+ /* Don't treat this as an error. May change my mind later. */
+ ret = 0;
+ goto command_cleanup;
+ case COMP_SUCCESS:
+ xhci_dbg(xhci, "Successful reset device command.\n");
+ break;
+ default:
+ if (xhci_is_vendor_info_code(xhci, ret))
+ break;
+ xhci_warn(xhci, "Unknown completion code %u for "
+ "reset device command.\n", ret);
+ ret = -EINVAL;
+ goto command_cleanup;
+ }
+
+ /* Everything but endpoint 0 is disabled, so free or cache the rings. */
+ last_freed_endpoint = 1;
+ for (i = 1; i < 31; ++i) {
+ if (!virt_dev->eps[i].ring)
+ continue;
+ xhci_free_or_cache_endpoint_ring(xhci, virt_dev, i);
+ last_freed_endpoint = i;
+ }
+ xhci_dbg(xhci, "Output context after successful reset device cmd:\n");
+ xhci_dbg_ctx(xhci, virt_dev->out_ctx, last_freed_endpoint);
+ ret = 0;
+
+command_cleanup:
+ xhci_free_command(xhci, reset_device_cmd);
+ return ret;
+}
+
+/*
* At this point, the struct usb_device is about to go away, the device has
* disconnected, and all traffic has been stopped and the endpoints have been
* disabled. Free any HC data structures associated with that device.
@@ -1694,7 +1805,7 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
xhci_warn(xhci, "Cannot update hub desc for unknown device.\n");
return -EINVAL;
}
- config_cmd = xhci_alloc_command(xhci, true, mem_flags);
+ config_cmd = xhci_alloc_command(xhci, true, true, mem_flags);
if (!config_cmd) {
xhci_dbg(xhci, "Could not allocate xHCI command structure.\n");
return -ENOMEM;
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 877813505ef2..e5eb09b2f38e 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -1210,6 +1210,8 @@ void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst);
void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci);
void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring);
void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep);
+char *xhci_get_slot_state(struct xhci_hcd *xhci,
+ struct xhci_container_ctx *ctx);
/* xHCI memory management */
void xhci_mem_cleanup(struct xhci_hcd *xhci);
@@ -1233,8 +1235,12 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev,
struct usb_device *udev, struct usb_host_endpoint *ep,
gfp_t mem_flags);
void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring);
+void xhci_free_or_cache_endpoint_ring(struct xhci_hcd *xhci,
+ struct xhci_virt_device *virt_dev,
+ unsigned int ep_index);
struct xhci_command *xhci_alloc_command(struct xhci_hcd *xhci,
- bool allocate_completion, gfp_t mem_flags);
+ bool allocate_in_ctx, bool allocate_completion,
+ gfp_t mem_flags);
void xhci_free_command(struct xhci_hcd *xhci,
struct xhci_command *command);
@@ -1264,6 +1270,7 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status);
int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep);
void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep);
+int xhci_reset_device(struct usb_hcd *hcd, struct usb_device *udev);
int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev);
@@ -1272,6 +1279,7 @@ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb);
struct xhci_segment *trb_in_td(struct xhci_segment *start_seg,
union xhci_trb *start_trb, union xhci_trb *end_trb,
dma_addr_t suspect_dma);
+int xhci_is_vendor_info_code(struct xhci_hcd *xhci, unsigned int trb_comp_code);
void xhci_ring_cmd_db(struct xhci_hcd *xhci);
void *xhci_setup_one_noop(struct xhci_hcd *xhci);
void xhci_handle_event(struct xhci_hcd *xhci);
@@ -1293,6 +1301,7 @@ int xhci_queue_evaluate_context(struct xhci_hcd *xhci, dma_addr_t in_ctx_ptr,
u32 slot_id);
int xhci_queue_reset_ep(struct xhci_hcd *xhci, int slot_id,
unsigned int ep_index);
+int xhci_queue_reset_device(struct xhci_hcd *xhci, u32 slot_id);
void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
unsigned int slot_id, unsigned int ep_index,
struct xhci_td *cur_td, struct xhci_dequeue_state *state);
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