From: Albert Herranz <albert_herranz@yahoo.es>
To: linux-usb@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Cc: Albert Herranz <albert_herranz@yahoo.es>
Subject: [RFC PATCH v3 11/11] wii: hollywood ehci controller support
Date: Sun, 7 Mar 2010 13:11:52 +0100 [thread overview]
Message-ID: <1267963912-984-12-git-send-email-albert_herranz@yahoo.es> (raw)
In-Reply-To: <1267963912-984-1-git-send-email-albert_herranz@yahoo.es>
Add support for the USB Enhanced Host Controller Interface included
in the "Hollywood" chipset of the Nintendo Wii video game console.
Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
---
arch/powerpc/platforms/embedded6xx/Kconfig | 1 +
drivers/usb/host/Kconfig | 8 +
drivers/usb/host/ehci-hcd.c | 5 +
drivers/usb/host/ehci-hlwd.c | 233 ++++++++++++++++++++++++++++
drivers/usb/host/ehci.h | 23 +++
5 files changed, 270 insertions(+), 0 deletions(-)
create mode 100644 drivers/usb/host/ehci-hlwd.c
diff --git a/arch/powerpc/platforms/embedded6xx/Kconfig b/arch/powerpc/platforms/embedded6xx/Kconfig
index f4fff0a..63bc708 100644
--- a/arch/powerpc/platforms/embedded6xx/Kconfig
+++ b/arch/powerpc/platforms/embedded6xx/Kconfig
@@ -121,6 +121,7 @@ config WII
select GAMECUBE_COMMON
select HAVE_GENERIC_DMA_COHERENT
select SWIOTLB
+ select USB_ARCH_HAS_EHCI
help
Select WII if configuring for the Nintendo Wii.
More information at: <http://gc-linux.sourceforge.net/>
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index 2678a16..342954f 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -131,6 +131,14 @@ config USB_EHCI_HCD_PPC_OF
Enables support for the USB controller present on the PowerPC
OpenFirmware platform bus.
+config USB_EHCI_HCD_HLWD
+ bool "Nintendo Wii (Hollywood) EHCI USB controller support"
+ depends on USB_EHCI_HCD && WII
+ default y
+ ---help---
+ Say Y here to support the EHCI USB controller found in the
+ Hollywood chipset of the Nintendo Wii video game console.
+
config USB_W90X900_EHCI
bool "W90X900(W90P910) EHCI support"
depends on USB_EHCI_HCD && ARCH_W90X900
diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
index 1ec3857..395c6a1 100644
--- a/drivers/usb/host/ehci-hcd.c
+++ b/drivers/usb/host/ehci-hcd.c
@@ -1133,6 +1133,11 @@ MODULE_LICENSE ("GPL");
#define OF_PLATFORM_DRIVER ehci_hcd_ppc_of_driver
#endif
+#ifdef CONFIG_USB_EHCI_HCD_HLWD
+#include "ehci-hlwd.c"
+#define OF_PLATFORM_DRIVER ehci_hcd_hlwd_driver
+#endif
+
#ifdef CONFIG_XPS_USB_HCD_XILINX
#include "ehci-xilinx-of.c"
#define OF_PLATFORM_DRIVER ehci_hcd_xilinx_of_driver
diff --git a/drivers/usb/host/ehci-hlwd.c b/drivers/usb/host/ehci-hlwd.c
new file mode 100644
index 0000000..129e96b
--- /dev/null
+++ b/drivers/usb/host/ehci-hlwd.c
@@ -0,0 +1,233 @@
+/*
+ * drivers/usb/host/ehci-hlwd.c
+ *
+ * Nintendo Wii (Hollywood) USB Enhanced Host Controller Interface.
+ * Copyright (C) 2009-2010 The GameCube Linux Team
+ * Copyright (C) 2009,2010 Albert Herranz
+ *
+ * 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.
+ *
+ * Based on ehci-ppc-of.c
+ *
+ * EHCI HCD (Host Controller Driver) for USB.
+ *
+ * Bus Glue for PPC On-Chip EHCI driver on the of_platform bus
+ * Tested on AMCC PPC 440EPx
+ *
+ * Valentine Barshak <vbarshak@ru.mvista.com>
+ *
+ * Based on "ehci-ppc-soc.c" by Stefan Roese <sr@denx.de>
+ * and "ohci-ppc-of.c" by Sylvain Munaut <tnt@246tNt.com>
+ *
+ * This file is licenced under the GPL.
+ */
+
+#include <linux/signal.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <asm/wii.h>
+
+#define DRV_MODULE_NAME "ehci-hlwd"
+#define DRV_DESCRIPTION "Nintendo Wii EHCI Host Controller"
+#define DRV_AUTHOR "Albert Herranz"
+
+/*
+ * Non-standard registers.
+ */
+#define HLWD_EHCI_CTL 0x00cc /* Controller Control */
+#define HLWD_EHCI_CTL_INTE (1<<15) /* Notify EHCI interrupts */
+
+/* called during probe() after chip reset completes */
+static int ehci_hlwd_reset(struct usb_hcd *hcd)
+{
+ struct ehci_hcd *ehci = hcd_to_ehci(hcd);
+ int error;
+
+ dbg_hcs_params(ehci, "reset");
+ dbg_hcc_params(ehci, "reset");
+
+ error = ehci_halt(ehci);
+ if (error)
+ goto out;
+
+ error = ehci_init(hcd);
+ if (error)
+ goto out;
+
+ /* enable notification of EHCI interrupts */
+ setbits32(hcd->regs + HLWD_EHCI_CTL, HLWD_EHCI_CTL_INTE);
+
+ ehci->sbrn = 0x20;
+ error = ehci_reset(ehci);
+ ehci_port_power(ehci, 0);
+out:
+ return error;
+}
+
+static const struct hc_driver ehci_hlwd_hc_driver = {
+ .description = hcd_name,
+ .product_desc = "Nintendo Wii EHCI Host Controller",
+ .hcd_priv_size = sizeof(struct ehci_hcd),
+
+ /*
+ * generic hardware linkage
+ */
+ .irq = ehci_irq,
+ .flags = HCD_USB2 | HCD_NO_COHERENT_MEM,
+
+ /*
+ * basic lifecycle operations
+ */
+ .reset = ehci_hlwd_reset,
+ .start = ehci_run,
+ .stop = ehci_stop,
+ .shutdown = ehci_shutdown,
+
+ /*
+ * managing i/o requests and associated device resources
+ */
+ .urb_enqueue = ehci_urb_enqueue,
+ .urb_dequeue = ehci_urb_dequeue,
+ .endpoint_disable = ehci_endpoint_disable,
+ .endpoint_reset = ehci_endpoint_reset,
+
+ /*
+ * scheduling support
+ */
+ .get_frame_number = ehci_get_frame,
+
+ /*
+ * root hub support
+ */
+ .hub_status_data = ehci_hub_status_data,
+ .hub_control = ehci_hub_control,
+#ifdef CONFIG_PM
+ .bus_suspend = ehci_bus_suspend,
+ .bus_resume = ehci_bus_resume,
+#endif
+ .relinquish_port = ehci_relinquish_port,
+ .port_handed_over = ehci_port_handed_over,
+
+ .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+};
+
+static int __devinit
+ehci_hcd_hlwd_probe(struct of_device *op, const struct of_device_id *match)
+{
+ struct device_node *dn = op->node;
+ struct usb_hcd *hcd;
+ struct ehci_hcd *ehci = NULL;
+ struct resource res;
+ int irq;
+ int error = -ENODEV;
+
+ if (usb_disabled())
+ goto out;
+
+ dev_dbg(&op->dev, "initializing " DRV_MODULE_NAME " USB Controller\n");
+
+ error = of_address_to_resource(dn, 0, &res);
+ if (error)
+ goto out;
+
+ hcd = usb_create_hcd(&ehci_hlwd_hc_driver, &op->dev, DRV_MODULE_NAME);
+ if (!hcd) {
+ error = -ENOMEM;
+ goto out;
+ }
+
+ hcd->rsrc_start = res.start;
+ hcd->rsrc_len = resource_size(&res);
+
+ irq = irq_of_parse_and_map(dn, 0);
+ if (irq == NO_IRQ) {
+ printk(KERN_ERR __FILE__ ": irq_of_parse_and_map failed\n");
+ error = -EBUSY;
+ goto err_irq;
+ }
+
+ hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ if (!hcd->regs) {
+ printk(KERN_ERR __FILE__ ": ioremap failed\n");
+ error = -EBUSY;
+ goto err_ioremap;
+ }
+
+ /* this device requires MEM2 DMA buffers */
+ error = wii_set_mem2_dma_constraints(&op->dev);
+ if (error)
+ goto err_mem2_constraints;
+
+ ehci = hcd_to_ehci(hcd);
+ ehci->caps = hcd->regs;
+ ehci->regs = hcd->regs +
+ HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase));
+
+ /* cache this readonly data; minimize chip reads */
+ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params);
+
+ error = usb_add_hcd(hcd, irq, 0);
+ if (error == 0)
+ return 0;
+
+err_mem2_constraints:
+ iounmap(hcd->regs);
+err_ioremap:
+ irq_dispose_mapping(irq);
+err_irq:
+ usb_put_hcd(hcd);
+out:
+ return error;
+}
+
+
+static int ehci_hcd_hlwd_remove(struct of_device *op)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+
+ dev_set_drvdata(&op->dev, NULL);
+
+ dev_dbg(&op->dev, "stopping " DRV_MODULE_NAME " USB Controller\n");
+
+ usb_remove_hcd(hcd);
+ wii_clear_mem2_dma_constraints(&op->dev);
+ iounmap(hcd->regs);
+ irq_dispose_mapping(hcd->irq);
+ usb_put_hcd(hcd);
+
+ return 0;
+}
+
+
+static int ehci_hcd_hlwd_shutdown(struct of_device *op)
+{
+ struct usb_hcd *hcd = dev_get_drvdata(&op->dev);
+
+ if (hcd->driver->shutdown)
+ hcd->driver->shutdown(hcd);
+
+ return 0;
+}
+
+
+static struct of_device_id ehci_hcd_hlwd_match[] = {
+ { .compatible = "nintendo,hollywood-usb-ehci", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ehci_hcd_hlwd_match);
+
+static struct of_platform_driver ehci_hcd_hlwd_driver = {
+ .name = DRV_MODULE_NAME,
+ .match_table = ehci_hcd_hlwd_match,
+ .probe = ehci_hcd_hlwd_probe,
+ .remove = ehci_hcd_hlwd_remove,
+ .shutdown = ehci_hcd_hlwd_shutdown,
+ .driver = {
+ .name = DRV_MODULE_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h
index 2d85e21..8fb519b 100644
--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -599,6 +599,27 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc)
#define ehci_big_endian_mmio(e) 0
#endif
+#ifdef CONFIG_USB_EHCI_HCD_HLWD
+
+/*
+ * The Nintendo Wii video game console has no PCI hardware.
+ * The USB controllers are part of the "Hollywood" chipset and are
+ * accessed via the platform internal I/O accessors.
+ */
+static inline unsigned int ehci_readl(const struct ehci_hcd *ehci,
+ __u32 __iomem *regs)
+{
+ return in_be32(regs);
+}
+
+static inline void ehci_writel(const struct ehci_hcd *ehci,
+ const unsigned int val, __u32 __iomem *regs)
+{
+ out_be32(regs, val);
+}
+
+#else
+
/*
* Big-endian read/write functions are arch-specific.
* Other arches can be added if/when they're needed.
@@ -632,6 +653,8 @@ static inline void ehci_writel(const struct ehci_hcd *ehci,
#endif
}
+#endif /* CONFIG_USB_EHCI_HCD_HLWD */
+
/*
* On certain ppc-44x SoC there is a HW issue, that could only worked around with
* explicit suspend/operate of OHCI. This function hereby makes sense only on that arch.
--
1.6.3.3
prev parent reply other threads:[~2010-03-07 12:12 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-07 12:11 [RFC PATCH v3 00/11] wii: add usb 2.0 support Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 01/11] powerpc: add per-device dma coherent support Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 02/11] powerpc: add min_direct_dma_addr Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 03/11] swiotbl: add back swiotlb_alloc_boot() Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 04/11] swiotlb: support NOT_COHERENT_CACHE PowerPC platforms Albert Herranz
2010-03-08 16:55 ` [LKML] " Konrad Rzeszutek Wilk
2010-03-09 18:07 ` Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 05/11] swiotlb: add swiotlb_set_default_size() Albert Herranz
2010-03-08 16:59 ` [LKML] " Konrad Rzeszutek Wilk
2010-03-09 18:38 ` Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 06/11] USB: refactor unmap_urb_for_dma/map_urb_for_dma Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 07/11] USB: add HCD_NO_COHERENT_MEM host controller driver flag Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 08/11] wii: have generic dma coherent Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 09/11] wii: add mem2 dma mapping ops Albert Herranz
2010-03-07 12:11 ` [RFC PATCH v3 10/11] wii: enable swiotlb Albert Herranz
2010-03-07 12:11 ` Albert Herranz [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1267963912-984-12-git-send-email-albert_herranz@yahoo.es \
--to=albert_herranz@yahoo.es \
--cc=linux-usb@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).