path: root/recipes/linux/linux-rp-2.6.23/tmio-ohci-r9.patch

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>

Index: linux-2.6.23/drivers/usb/host/ohci-tmio.c
===================================================================
--- /dev/null	1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.23/drivers/usb/host/ohci-tmio.c	2007-11-14 16:58:47.637707413 +0300
@@ -0,0 +1,530 @@
+/*
+ * OHCI HCD(Host Controller Driver) for USB.
+ *
+ *(C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
+ *(C) Copyright 2000-2002 David Brownell <dbrownell@users.sourceforge.net>
+ *(C) Copyright 2002 Hewlett-Packard Company
+ *
+ * Bus glue for Toshiba Mobile IO(TMIO) Controller's OHCI core
+ *(C) Copyright 2005 Chris Humbert <mahadri-usb@drigon.com>
+ *
+ * This is known to work with the following variants:
+ *	TC6393XB revision 3	(32kB SRAM)
+ *
+ * The TMIO's OHCI core DMAs through a small internal buffer that
+ * is directly addressable by the CPU.  dma_declare_coherent_memory
+ * and DMA bounce buffers allow the higher-level OHCI host driver to
+ * work.  However, the dma API doesn't handle dma mapping failures
+ * well(dma_sg_map() is a prime example), so it is unusable.
+ *
+ * This HC pretends be a PIO-ish controller and uses the kernel's
+ * generic allocator for the entire SRAM.  Using the USB core's
+ * usb_operations, we provide hcd_buffer_alloc/free.  Using the OHCI's
+ * ohci_ops, we provide memory management for OHCI's TDs and EDs.  We
+ * internally queue a URB's TDs until enough dma memory is available
+ * to enqueue them with the HC.
+ *
+ * Written from sparse documentation from Toshiba and Sharp's driver
+ * for the 2.4 kernel,
+ *	usb-ohci-tc6393.c(C) Copyright 2004 Lineo Solutions, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/pagemap.h>
+#include <linux/init.h>
+#include <linux/namei.h>
+#include <linux/sched.h>
+
+#include <linux/genalloc.h>
+#include <asm/hardware/tmio.h>
+#include <linux/dma-mapping.h>
+
+/*-------------------------------------------------------------------------*/
+
+#define MAX_TMIO_USB_PORTS 2
+static bool default_tmio_ports[MAX_TMIO_USB_PORTS];
+module_param_array(default_tmio_ports, bool, NULL, 0644);
+MODULE_PARM_DESC(default_tmio_ports,
+		"disable specified TC6393 usb ports (default: all enabled)");
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * USB Host Controller Configuration Register
+ */
+struct tmio_uhccr {
+	u8 x00[8];
+	u8	revid;	/* 0x08 Revision ID				*/
+	u8 x01[7];
+	u16	basel;	/* 0x10 USB Control Register Base Address Low	*/
+	u16	baseh;	/* 0x12 USB Control Register Base Address High	*/
+	u8 x02[0x2c];
+	u8	ilme;	/* 0x40 Internal Local Memory Enable		*/
+	u8 x03[0x0b];
+	u16	pm;	/* 0x4c Power Management			*/
+	u8 x04[2];
+	u8	intc;	/* 0x50 INT Control				*/
+	u8 x05[3];
+	u16	lmw1l;	/* 0x54 Local Memory Window 1 LMADRS Low	*/
+	u16	lmw1h;	/* 0x56 Local Memory Window 1 LMADRS High	*/
+	u16	lmw1bl;	/* 0x58 Local Memory Window 1 Base Address Low	*/
+	u16	lmw1bh;	/* 0x5A Local Memory Window 1 Base Address High	*/
+	u16	lmw2l;	/* 0x5C Local Memory Window 2 LMADRS Low	*/
+	u16	lmw2h;	/* 0x5E Local Memory Window 2 LMADRS High	*/
+	u16	lmw2bl;	/* 0x60 Local Memory Window 2 Base Address Low	*/
+	u16	lmw2bh;	/* 0x62 Local Memory Window 2 Base Address High	*/
+	u8 x06[0x98];
+	u8	misc;	/* 0xFC MISC					*/
+	u8 x07[3];
+} __attribute__((packed));
+
+union tmio_uhccr_pm {
+	u16		raw;
+struct {
+	unsigned	gcken:1;	/* D0 */
+	unsigned	ckrnen:1;	/* D1 */
+	unsigned	uspw0:1;	/* D2 USB Port 1 Power Disable	*/
+	unsigned	uspw1:1;	/* D3 USB Port 2 Power Disable	*/
+	unsigned	x00:4;
+	unsigned	pmee:1;		/* D8 */
+	unsigned	x01:6;
+	unsigned	pmes:1;		/* D15 */
+} __attribute__((packed));
+} __attribute__((packed));
+
+/*-------------------------------------------------------------------------*/
+
+struct tmio_hcd {
+	struct tmio_uhccr __iomem *ccr;
+	bool disabled_ports[MAX_TMIO_USB_PORTS];
+};
+
+#define hcd_to_tmio(hcd)	((struct tmio_hcd *)(hcd_to_ohci(hcd) + 1))
+#define ohci_to_tmio(ohci)	((struct tmio_hcd *)(ohci + 1))
+
+/*-------------------------------------------------------------------------*/
+
+struct indexed_device_attribute{
+	struct device_attribute dev_attr;
+	int index;
+};
+#define to_indexed_dev_attr(_dev_attr) \
+	container_of(_dev_attr, struct indexed_device_attribute, dev_attr)
+
+#define INDEXED_ATTR(_name, _mode, _show, _store, _index)		\
+	{ .dev_attr = __ATTR(_name ## _index, _mode, _show, _store),	\
+	  .index = _index }
+
+#define INDEXED_DEVICE_ATTR(_name, _mode, _show, _store, _index)	\
+struct indexed_device_attribute dev_attr_##_name ## _index	\
+	= INDEXED_ATTR(_name, _mode, _show, _store, _index)
+
+/*-------------------------------------------------------------------------*/
+
+
+static void tmio_fill_pm(struct tmio_hcd *tmio, union tmio_uhccr_pm *pm)
+{
+	pm->raw = 0;
+
+	pm->pmee	= 1;
+	pm->pmes	= 1;
+	pm->gcken	= 1;
+	pm->ckrnen	= 1;
+
+	if (tmio->disabled_ports[0])
+		pm->uspw0 = 1;
+	if (tmio->disabled_ports[1])
+		pm->uspw1 = 1;
+}
+
+static void tmio_stop_hc(struct device *dev)
+{
+	struct tmio_device		*tdev	= dev_to_tdev(dev);
+	struct usb_hcd			*hcd	= dev_get_drvdata(dev);
+	struct tmio_hcd			*tmio	= hcd_to_tmio(hcd);
+	struct tmio_uhccr __iomem	*ccr	= tmio->ccr;
+	union tmio_uhccr_pm		pm	= {0};
+
+	pm.gcken	= 1;
+	pm.ckrnen	= 1;
+	pm.uspw0	= 1;
+	pm.uspw1	= 1;
+
+	iowrite8(0,		&ccr->intc);
+	iowrite8(0,		&ccr->ilme);
+	iowrite16(0,		&ccr->basel);
+	iowrite16(0,		&ccr->baseh);
+	iowrite16(pm.raw,	&ccr->pm);
+
+	tdev->ops->function(dev, 0);
+	tdev->ops->clock(dev, 0);
+}
+
+static void tmio_start_hc(struct device *dev)
+{
+	struct tmio_device		*tdev	= dev_to_tdev(dev);
+	struct usb_hcd			*hcd	= dev_get_drvdata(dev);
+	struct tmio_hcd			*tmio	= hcd_to_tmio(hcd);
+	struct tmio_uhccr __iomem	*ccr	= tmio->ccr;
+	union tmio_uhccr_pm		pm	= {0};
+	unsigned long			base	= hcd->rsrc_start;
+
+	tmio_fill_pm(tmio, &pm);
+
+	tdev->ops->clock(dev, 1);
+	tdev->ops->function(dev, 1);
+
+	iowrite16(pm.raw,	&ccr->pm);
+	iowrite16(base,		&ccr->basel);
+	iowrite16(base >> 16,	&ccr->baseh);
+	iowrite8(1,		&ccr->ilme);
+	iowrite8(2,		&ccr->intc);
+
+	dev_info(dev, "revision %d @ 0x%08llx, irq %d\n",
+			ioread8(&ccr->revid), hcd->rsrc_start, hcd->irq);
+}
+
+static ssize_t tmio_disabled_port_show(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct usb_hcd		*hcd	= dev_get_drvdata(dev);
+	struct tmio_hcd		*tmio	= hcd_to_tmio(hcd);
+	int			index	= to_indexed_dev_attr(attr)->index;
+	return snprintf(buf, PAGE_SIZE, "%c",
+			tmio->disabled_ports[index]? 'Y': 'N');
+}
+
+static ssize_t tmio_disabled_port_store(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf, size_t count)
+{
+	struct usb_hcd		*hcd	= dev_get_drvdata(dev);
+	struct tmio_hcd		*tmio	= hcd_to_tmio(hcd);
+	struct tmio_uhccr __iomem *ccr	= tmio->ccr;
+	union tmio_uhccr_pm	pm	= {0};
+	int			index	= to_indexed_dev_attr(attr)->index;
+
+	if (!count)
+		return -EINVAL;
+
+	switch (buf[0]) {
+	case 'y': case 'Y': case '1':
+		tmio->disabled_ports[index] = true;
+		break;
+	case 'n': case 'N': case '0':
+		tmio->disabled_ports[index] = false;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	tmio_fill_pm(tmio, &pm);
+
+	iowrite16(pm.raw,	&ccr->pm);
+
+	return 1;
+}
+
+
+static INDEXED_DEVICE_ATTR(disabled_usb_port, S_IRUGO | S_IWUSR,
+		tmio_disabled_port_show, tmio_disabled_port_store, 0);
+static INDEXED_DEVICE_ATTR(disabled_usb_port, S_IRUGO | S_IWUSR,
+		tmio_disabled_port_show, tmio_disabled_port_store, 1);
+
+static int usb_hcd_tmio_probe(const struct hc_driver *driver,
+		struct device *dev)
+{
+	struct tmio_device	*tdev	= dev_to_tdev(dev);
+	struct resource		*config	= tmio_resource_config(dev);
+	struct resource		*regs	= tmio_resource_control(dev);
+	struct resource		*sram	= tmio_resource_mem(dev);
+	struct resource		*irq	= tmio_resource_irq(dev);
+	struct tmio_hcd		*tmio;
+	struct ohci_hcd		*ohci;
+	struct usb_hcd		*hcd;
+	int			retval;
+
+	if (usb_disabled())
+		return -ENODEV;
+
+	hcd = usb_create_hcd(driver, dev, dev->bus_id);
+	if (!hcd) {
+		retval = -ENOMEM;
+		goto err_usb_create_hcd;
+	}
+
+	retval = request_resource(tdev->iomem, config);
+	if (retval)
+		goto err_request_config_resource;
+
+	retval = request_resource(tdev->iomem, regs);
+	if (retval)
+		goto err_request_regs_resource;
+
+	retval = request_resource(tdev->iomem, sram);
+	if (retval)
+		goto err_request_sram_resource;
+
+	hcd->rsrc_start	= regs->start;
+	hcd->rsrc_len	= regs->end - regs->start + 1;
+
+	tmio		= hcd_to_tmio(hcd);
+	memcpy(tmio->disabled_ports,
+			default_tmio_ports,
+			sizeof(default_tmio_ports));
+
+	tmio->ccr = ioremap(config->start, config->end - config->start + 1);
+	if (!tmio->ccr) {
+		retval = -ENOMEM;
+		goto err_ioremap_ccr;
+	}
+
+	hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+	if (!hcd->regs) {
+		retval = -ENOMEM;
+		goto err_ioremap_regs;
+	}
+
+	if (dma_declare_coherent_memory(dev, sram->start,
+				sram->start,
+				sram->end - sram->start + 1,
+				DMA_MEMORY_MAP) != DMA_MEMORY_MAP) {
+		retval = -EBUSY;
+		goto err_dma_declare;
+	}
+
+	retval = dmabounce_register_dev(dev, 512, 4096);
+	if (retval)
+		goto err_dmabounce_register_dev;
+
+	tmio_start_hc(dev);
+	ohci = hcd_to_ohci(hcd);
+	ohci_hcd_init(ohci);
+
+	retval  = device_create_file(dev,
+			&dev_attr_disabled_usb_port0.dev_attr);
+	retval |= device_create_file(dev,
+			&dev_attr_disabled_usb_port1.dev_attr);
+
+	if (retval)
+		goto err_create_file;
+
+	retval = usb_add_hcd(hcd, irq->start, IRQF_DISABLED);
+
+	if (retval == 0)
+		return retval;
+
+err_create_file:
+	device_remove_file(dev, &dev_attr_disabled_usb_port1.dev_attr);
+	device_remove_file(dev, &dev_attr_disabled_usb_port0.dev_attr);
+
+	tmio_stop_hc(dev);
+
+	dmabounce_unregister_dev(dev);
+err_dmabounce_register_dev:
+	dma_release_declared_memory(dev);
+err_dma_declare:
+	iounmap(hcd->regs);
+err_ioremap_regs:
+	iounmap(tmio->ccr);
+err_ioremap_ccr:
+	release_resource(sram);
+err_request_sram_resource:
+	release_resource(regs);
+err_request_regs_resource:
+	release_resource(config);
+err_request_config_resource:
+	usb_put_hcd(hcd);
+err_usb_create_hcd:
+
+	return retval;
+}
+
+static void usb_hcd_tmio_remove(struct usb_hcd *hcd, struct device *dev)
+{
+	struct tmio_hcd		*tmio	= hcd_to_tmio(hcd);
+
+	usb_remove_hcd(hcd);
+	device_remove_file(dev, &dev_attr_disabled_usb_port1.dev_attr);
+	device_remove_file(dev, &dev_attr_disabled_usb_port0.dev_attr);
+	tmio_stop_hc(dev);
+	dmabounce_unregister_dev(dev);
+	dma_release_declared_memory(dev);
+	iounmap(hcd->regs);
+	iounmap(tmio->ccr);
+	release_resource(tmio_resource_mem(dev));
+	release_resource(tmio_resource_control(dev));
+	release_resource(tmio_resource_config(dev));
+	usb_put_hcd(hcd);
+}
+
+static int __devinit
+ohci_tmio_start(struct usb_hcd *hcd)
+{
+	struct ohci_hcd		*ohci	= hcd_to_ohci(hcd);
+	int			retval;
+
+	if ((retval = ohci_init(ohci)) < 0)
+		return retval;
+
+	if ((retval = ohci_run(ohci)) < 0) {
+		err("can't start %s", hcd->self.bus_name);
+		ohci_stop(hcd);
+		return retval;
+	}
+
+	return 0;
+}
+
+static const struct hc_driver ohci_tmio_hc_driver = {
+	.description =		hcd_name,
+	.product_desc =		"TMIO OHCI USB Host Controller",
+	.hcd_priv_size =	sizeof(struct ohci_hcd) + sizeof (struct tmio_hcd),
+
+	/* generic hardware linkage */
+	.irq =			ohci_irq,
+	.flags =		HCD_USB11 | HCD_MEMORY,
+
+	/* basic lifecycle operations */
+	.start =		ohci_tmio_start,
+	.stop =			ohci_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_hub_status_data,
+	.hub_control =		ohci_hub_control,
+	.hub_irq_enable =	ohci_rhsc_enable,
+#ifdef	CONFIG_PM
+	.bus_suspend =		ohci_bus_suspend,
+	.bus_resume =		ohci_bus_resume,
+#endif
+	.start_port_reset =	ohci_start_port_reset,
+};
+
+/*-------------------------------------------------------------------------*/
+static struct device_driver tmio_ohci;
+
+static int
+tmio_dmabounce_check(struct device *dev, dma_addr_t dma, size_t size, void *data)
+{
+	struct resource		*sram	= data;
+#ifdef DEBUG
+	printk(KERN_ERR "tmio_dmabounce_check: %08x %d\n", dma, size);
+#endif
+
+	if (dev->driver != &tmio_ohci)
+		return 0;
+
+	if (sram->start <= dma && dma + size <= sram->end)
+		return 0;
+
+	return 1;
+}
+
+static u64 dma_mask = DMA_32BIT_MASK;
+
+static int ohci_hcd_tmio_drv_probe(struct device *dev)
+{
+	struct resource		*sram	= tmio_resource_mem(dev);
+	int retval;
+
+	dev->dma_mask = &dma_mask;
+	dev->coherent_dma_mask = DMA_32BIT_MASK;
+
+	/* FIXME: move dmabounce checkers to tc6393 core? */
+	dmabounce_register_checker(tmio_dmabounce_check, sram);
+
+	retval = usb_hcd_tmio_probe(&ohci_tmio_hc_driver, dev);
+
+	if (retval == 0)
+		return retval;
+
+	dmabounce_remove_checker(tmio_dmabounce_check, sram);
+
+	return retval;
+}
+
+static int ohci_hcd_tmio_drv_remove(struct device *dev)
+{
+	struct usb_hcd		*hcd	= dev_get_drvdata(dev);
+	struct resource		*sram	= tmio_resource_mem(dev);
+
+	usb_hcd_tmio_remove(hcd, dev);
+
+	dev_set_drvdata(dev, NULL);
+
+	dmabounce_remove_checker(tmio_dmabounce_check, sram);
+
+	return 0;
+}
+
+#ifdef	CONFIG_PM
+static int ohci_hcd_tmio_drv_suspend(struct device *dev, pm_message_t state)
+{
+	struct usb_hcd		*hcd	= dev_get_drvdata(dev);
+	struct ohci_hcd		*ohci	= hcd_to_ohci(hcd);
+
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+
+	tmio_stop_hc(dev);
+	hcd->state = HC_STATE_SUSPENDED;
+	dev->power.power_state = PMSG_SUSPEND;
+
+	return 0;
+}
+
+static int ohci_hcd_tmio_drv_resume(struct device *dev)
+{
+	struct usb_hcd		*hcd	= dev_get_drvdata(dev);
+	struct ohci_hcd		*ohci	= hcd_to_ohci(hcd);
+
+	if (time_before(jiffies, ohci->next_statechange))
+		msleep(5);
+	ohci->next_statechange = jiffies;
+
+	tmio_start_hc(dev);
+
+	dev->power.power_state = PMSG_ON;
+	usb_hcd_resume_root_hub(hcd);
+
+	return 0;
+}
+#endif
+
+static void usb_hcd_device_shutdown(struct device *dev)
+{
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
+
+	if (hcd->driver->shutdown)
+		hcd->driver->shutdown(hcd);
+}
+
+static struct device_driver tmio_ohci = {
+	.owner		= THIS_MODULE,
+	.name		= TMIO_NAME_OHCI,
+	.bus		= &tmio_bus_type,
+	.probe		= ohci_hcd_tmio_drv_probe,
+	.remove		= ohci_hcd_tmio_drv_remove,
+	.shutdown	= usb_hcd_device_shutdown,
+#ifdef CONFIG_PM
+	.suspend	= ohci_hcd_tmio_drv_suspend,
+	.resume		= ohci_hcd_tmio_drv_resume,
+#endif
+};
+
Index: linux-2.6.23/drivers/usb/host/Kconfig
===================================================================
--- linux-2.6.23.orig/drivers/usb/host/Kconfig	2007-10-10 00:31:38.000000000 +0400
+++ linux-2.6.23/drivers/usb/host/Kconfig	2007-11-12 13:46:53.086559913 +0300
@@ -101,6 +101,7 @@
 	depends on USB && USB_ARCH_HAS_OHCI
 	select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3
 	select I2C if ARCH_PNX4008
+	select GENERIC_ALLOCATOR if TOSHIBA_TC6393XB
 	---help---
 	  The Open Host Controller Interface (OHCI) is a standard for accessing
 	  USB 1.1 host controller hardware.  It does more in hardware than Intel's
Index: linux-2.6.23/drivers/usb/host/ohci-hcd.c
===================================================================
--- linux-2.6.23.orig/drivers/usb/host/ohci-hcd.c	2007-11-12 13:46:52.894560883 +0300
+++ linux-2.6.23/drivers/usb/host/ohci-hcd.c	2007-11-14 16:44:32.788069355 +0300
@@ -915,6 +915,10 @@
 #define PLATFORM_DRIVER		usb_hcd_pnx4008_driver
 #endif
 
+#ifdef CONFIG_TOSHIBA_TC6393XB
+#include "ohci-tmio.c"
+#define DEVICE_DRIVER		tmio_ohci
+#endif
 
 #ifdef CONFIG_USB_OHCI_HCD_PPC_OF
 #include "ohci-ppc-of.c"
Index: linux-2.6.23/drivers/usb/Kconfig
===================================================================
--- linux-2.6.23.orig/drivers/usb/Kconfig	2007-10-10 00:31:38.000000000 +0400
+++ linux-2.6.23/drivers/usb/Kconfig	2007-11-12 13:46:53.090570777 +0300
@@ -42,6 +42,7 @@
 	# MIPS:
 	default y if SOC_AU1X00
 	# more:
+	default y if TOSHIBA_TC6393XB
 	default PCI
 
 # some non-PCI hcds implement EHCI
Index: linux-2.6.23/arch/arm/common/Kconfig
===================================================================
--- linux-2.6.23.orig/arch/arm/common/Kconfig	2007-11-12 13:46:48.754297930 +0300
+++ linux-2.6.23/arch/arm/common/Kconfig	2007-11-12 13:46:53.090570777 +0300
@@ -35,3 +35,4 @@
 
 config TOSHIBA_TC6393XB
 	bool
+	select DMABOUNCE