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Re: [microblaze-uclinux] USB : Problem in porting C67x00 Driver to petalinux
Hi, John:
A big thanks for your patch, I find out what's the matter with my porting now.
My driver works well now. Again thanks a lot.
Yea, Dr. Johann Pfefferl, I make the coding of the file
arch/microblaze/platform/common/c67x00.c ,it works.
I try to mount file system on usb storage next, but something wrong. I
will try more testing.
Logs below:
# mount /dev/sda1 /tmp/mnt
VFS: Can't find ext3 filesystem on dev sda1.
VFS: Can't find an ext2 filesystem on dev sda1.
cramfs: wrong magic
FAT: codepage cp437 not found
FAT: codepage cp437 not found
VFS: Can't find a romfs filesystem on dev sda1.
mount: Mounting /dev/sda1 on /tmp/mnt failed: Invalid argument
Regards,
Childhood.
2009/6/10 Dr. Johann Pfefferl <j.pfefferl@xxxxxxxxx>:
> Hello,
>
> I think the patch is missing at least one file:
> software/linux-2.6.x-petalogix/arch/microblaze/platform/common/c67x00.c
>
> Hans
>
> John Williams <john.williams@xxxxxxxxxxxxx> wrote:
>> Hi Childhood,
>>
>> Please find attached a patch that will should cleanly to a
>> petalinux-v0.40 release. It does several things:
>>
>> * back-port the C67X00 driver from a more recent kernel
>> * Add the necessary platform initialiser glue
>>
>> I've also uploaded an ML505 USB demo HW app to the petalogix server:
>>
>> http://developer.petalogix.com/downloads/petalogix-ml505-usb.tar.gz
>>
>> A couple of tricks to watch for:
>> * because the USB interrupt comes in from an external port, directly
>> to the interrupt controller, you have to hard wire the IQR number in
>> arch/microblaze/platform/common/c67x00.c
>> * you have to use the PERIPH_TYPE_OVERRIDES parameter in your MSS
>> file, to rename the EPC instance to something that the platform
>> initialiser can use. See the example HW design for details
>>
>> Regards,
>>
>> John
>>
>> On Wed, Jun 10, 2009 at 1:38 AM, Childhood Hwang
>> <childhood.hwang@xxxxxxxxx> wrote:
>> > I am tring to port C67x00 driver to petalinux right now. But I
>> > can't make it work.
>> > I saw there was some discussion before, and it seem's that those
>> > discussions were the right thing messing me.
>> >
>> > I found the discussion in link: http://marc.info/?t=122849175200004&r=1&w=2
>> >
>> > But there is no answer how to getover this, just that the problem was
>> > in different status handling for older kernel.
>> >
>> > I am quite newest to Linux.
>> >
>> > I insert a kernel module that register the platform device for USB,
>> > I think the interrupt works well.
>> > Register code is like that,:
>> >
>> > static struct resource c67x00_resources[] = {
>> > [0] = {
>> > .start = 0x80800000,
>> > .end = 0x8080ffff,
>> > .flags = IORESOURCE_MEM,
>> > },
>> > [1] = {
>> > .start = 0,
>> > .end = 0,
>> > .flags = IORESOURCE_IRQ,
>> > },
>> > };
>> >
>> > static struct c67x00_platform_data c67x00_data = {
>> > .sie_config = C67X00_SIE1_HOST | C67X00_SIE2_HOST,
>> > .hpi_regstep = 0x02,
>> > };
>> >
>> > static struct platform_device c67x00_device = {
>> > .name = "c67x00",
>> > .id = -1,
>> > .num_resources = ARRAY_SIZE(c67x00_resources),
>> > .resource = c67x00_resources,
>> > .dev.platform_data = &c67x00_data,
>> > };
>> >
>> > static int __init c67x00_device_reg_init(void)
>> > {
>> > /* printk("<1>Hello module world.\n");
>> > printk("<1>Module parameters were (0x%08x) and \"%s\"\n", myint,
>> > mystr); */
>> > printk("======== Call : c67x00_device_reg_init() ========\n");
>> >
>> > /* A non 0 return means init_module failed; module can't be loaded. */
>> > return platform_device_register(&c67x00_device);
>> > }
>> >
>> >
>> > static void __exit c67x00_device_reg_exit(void)
>> > {
>> > printk(KERN_ALERT "======== Goodbye c67x00_device_reg_exit().
>> > ========\n");
>> > platform_device_unregister(&c67x00_device);
>> > }
>> >
>> > module_init(c67x00_device_reg_init);
>> > module_exit(c67x00_device_reg_exit);
>> >
>> >
>> > And the log list below:
>> >
>> > # insmod /lib/modules/kernel/drivers/misc/c67x00_device_reg.ko
>> > ======== Call : c67x00_device_reg_init() ========
>> > ============ USB driver : Call c67x00_drv_probe() ============
>> > c67x00 c67x00: Cypress C67X00 Host Controller
>> > drivers/usb/core/inode.c: creating file 'devices'
>> > drivers/usb/core/inode.c: creating file '001'
>> > c67x00 c67x00: new USB bus registered, assigned bus number 1
>> > usb usb1: default language 0x0409
>> > usb usb1: new device strings: Mfr=3, Product=2, SerialNumber=1
>> > usb usb1: Product: Cypress C67X00 Host Controller
>> > usb usb1: Manufacturer: Linux 2.6.20-uc0 c67x00-hcd
>> > usb usb1: SerialNumber: c67x00_sie
>> > usb usb1: usb_probe_device
>> > usb usb1: configuration #1 chosen from 1 choice
>> > usb usb1: adding 1-0:1.0 (config #1, interface 0)
>> > hub 1-0:1.0: usb_probe_interface
>> > hub 1-0:1.0: usb_probe_interface - got id
>> > hub 1-0:1.0: USB hub found
>> > hub 1-0:1.0: 2 ports detected
>> > hub 1-0:1.0: standalone hub
>> > hub 1-0:1.0: ganged power switching
>> > hub 1-0:1.0: global over-current protection
>> > hub 1-0:1.0: power on to power good time: 100ms
>> > hub 1-0:1.0: local power source is good
>> > hub 1-0:1.0: no over-current condition exists
>> > hub 1-0:1.0: enabling power on all ports
>> > drivers/usb/core/inode.c: creating file '001'
>> > hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0000
>> > c67x00 c67x00: Cypress C67X00 Host Controller
>> > drivers/usb/core/inode.c: creating file '002'
>> > c67x00 c67x00: new USB bus registered, assigned bus number 2
>> > usb usb2: default language 0x0409
>> > usb usb2: new device strings: Mfr=3, Product=2, SerialNumber=1
>> > usb usb2: Product: Cypress C67X00 Host Controller
>> > usb usb2: Manufacturer: Linux 2.6.20-uc0 c67x00-hcd
>> > usb usb2: SerialNumber: c67x00_sie
>> > usb usb2: usb_probe_device
>> > usb usb2: configuration #1 chosen from 1 choice
>> > usb usb2: adding 2-0:1.0 (config #1, interface 0)
>> > hub 2-0:1.0: usb_probe_interface
>> > hub 2-0:1.0: usb_probe_interface - got id
>> > hub 2-0:1.0: USB hub found
>> > hub 2-0:1.0: 2 ports detected
>> > hub 2-0:1.0: standalone hub
>> > hub 2-0:1.0: ganged power switching
>> > hub 2-0:1.0: global over-current protection
>> > hub 2-0:1.0: power on to power good time: 100ms
>> > hub 2-0:1.0: local power source is good
>> > hub 2-0:1.0: no over-current condition exists
>> > hub 2-0:1.0: enabling power on all ports
>> > drivers/usb/core/inode.c: creating file '001'
>> > hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0000
>> >
>> >
>> >
>> > # hub 1-0:1.0: state 7 ports 2 chg 0000 evt 0002
>> > hub 1-0:1.0: port 1, status 0101, change 0001, 12 Mb/s
>> > hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
>> > c67x00 c67x00: ClearPortFeature (0): C_RESET
>> > usb 1-1: new full speed USB device using c67x00 and address 2
>> > c67x00 c67x00: ClearPortFeature (0): C_RESET
>> > c67x00 c67x00: ### TIMEOUT at 0x0500
>> > c67x00 c67x00: urb: 0x902390cc
>> > c67x00 c67x00: endpoint: 0
>> > c67x00 c67x00: pipeout: 1
>> > c67x00 c67x00: ly_base_addr: 0x0700
>> > c67x00 c67x00: port_length: 0x0008
>> > c67x00 c67x00: pid_ep: 0xd0
>> > c67x00 c67x00: dev_addr: 0x00
>> > c67x00 c67x00: ctrl_reg: 0x01
>> > c67x00 c67x00: status: 0x14
>> > c67x00 c67x00: retry_cnt: 0x00
>> > c67x00 c67x00: residue: 0x00
>> > c67x00 c67x00: next_td_addr: 0x0000
>> > c67x00 c67x00: data:<3>usb 1-1: device not accepting address 2, error -115
>> > c67x00 c67x00: ClearPortFeature (0): C_RESET
>> > usb 1-1: new full speed USB device using c67x00 and address 3
>> > c67x00 c67x00: ClearPortFeature (0): C_RESET
>> > c67x00 c67x00: ### TIMEOUT at 0x0500
>> > c67x00 c67x00: urb: 0x902390cc
>> > c67x00 c67x00: endpoint: 0
>> > c67x00 c67x00: pipeout: 1
>> > c67x00 c67x00: ly_base_addr: 0x0700
>> > c67x00 c67x00: port_length: 0x0008
>> > c67x00 c67x00: pid_ep: 0xd0
>> > c67x00 c67x00: dev_addr: 0x00
>> > c67x00 c67x00: ctrl_reg: 0x01
>> > c67x00 c67x00: status: 0x14
>> > c67x00 c67x00: retry_cnt: 0x00
>> > c67x00 c67x00: residue: 0x00
>> > c67x00 c67x00: next_td_addr: 0x0000
>> > c67x00 c67x00: data:<3>usb 1-1: device not accepting address 3, error -115
>> > c67x00 c67x00: ClearPortFeature (0): C_RESET
>> > usb 1-1: new full speed USB device using c67x00 and address 4
>> > c67x00 c67x00: ### TIMEOUT at 0x0500
>> > c67x00 c67x00: urb: 0x902390cc
>> > c67x00 c67x00: endpoint: 0
>> > c67x00 c67x00: pipeout: 1
>> > c67x00 c67x00: ly_base_addr: 0x0700
>> > c67x00 c67x00: port_length: 0x0008
>> > c67x00 c67x00: pid_ep: 0xd0
>> > c67x00 c67x00: dev_addr: 0x00
>> > c67x00 c67x00: ctrl_reg: 0x01
>> > c67x00 c67x00: status: 0x14
>> > c67x00 c67x00: retry_cnt: 0x00
>> > c67x00 c67x00: residue: 0x00
>> > c67x00 c67x00: next_td_addr: 0x0000
>> > c67x00 c67x00: data:<3>usb 1-1: device not accepting address 4, error -115
>> > c67x00 c67x00: ClearPortFeature (0): C_RESET
>> > usb 1-1: new full speed USB device using c67x00 and address 5
>> > c67x00 c67x00: ### TIMEOUT at 0x0500
>> > c67x00 c67x00: urb: 0x902390cc
>> > c67x00 c67x00: endpoint: 0
>> > c67x00 c67x00: pipeout: 1
>> > c67x00 c67x00: ly_base_addr: 0x0700
>> > c67x00 c67x00: port_length: 0x0008
>> > c67x00 c67x00: pid_ep: 0xd0
>> > c67x00 c67x00: dev_addr: 0x00
>> > c67x00 c67x00: ctrl_reg: 0x01
>> > c67x00 c67x00: status: 0x14
>> > c67x00 c67x00: retry_cnt: 0x00
>> > c67x00 c67x00: residue: 0x00
>> > c67x00 c67x00: next_td_addr: 0x0000
>> > c67x00 c67x00: data:<3>usb 1-1: device not accepting address 5, error -115
>> > ___________________________
>> > microblaze-uclinux mailing list
>> > microblaze-uclinux@xxxxxxxxxxxxxx
>> > Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
>> > Mailing List Archive : http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/
>> >
>> >
>>
>>
>>
>> --
>> John Williams, PhD, B.Eng, B.IT
>> PetaLogix - Linux Solutions for a Reconfigurable World
>> w: www.petalogix.com p: +61-7-30090663 f: +61-7-30090663
>
>> Index: software/linux-2.6.x-petalogix/arch/microblaze/platform/common/Makefile
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/arch/microblaze/platform/common/Makefile (revision 5469)
>> +++ software/linux-2.6.x-petalogix/arch/microblaze/platform/common/Makefile (working copy)
>> @@ -20,7 +20,9 @@
>> platobj-$(CONFIG_INPUT_KEYPADDEV) += xbtn_decoder.o
>> platobj-$(CONFIG_PCI) += xpci.o
>> platobj-$(CONFIG_XILINX_IIC) += xiic.o
>> +platobj-$(CONFIG_USB_C67X00_HCD) += c67x00.o
>>
>> +
>> obj-y += $(platobj-y) $(platobj-m)
>>
>> # Make these platform setup sources dependent on .config
>> @@ -38,3 +40,5 @@
>> $(obj)/xbtn_decoder.o: .config
>> $(obj)/xpci.o: .config
>> $(obj)/xiic.o: .config
>> +$(obj)/c67x00.o: .config
>> +
>> Index: software/linux-2.6.x-petalogix/drivers/usb/Kconfig
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/Kconfig (revision 5469)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/Kconfig (working copy)
>> @@ -12,6 +12,7 @@
>> default y if USB_ARCH_HAS_OHCI
>> default y if USB_ARCH_HAS_EHCI
>> default y if ARM # SL-811
>> + default y if MICROBLAZE
>> default PCI
>>
>> # many non-PCI SOC chips embed OHCI
>> Index: software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-drv.c
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-drv.c (revision 0)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-drv.c (revision 0)
>> @@ -0,0 +1,243 @@
>> +/*
>> + * c67x00-drv.c: Cypress C67X00 USB Common infrastructure
>> + *
>> + * Copyright (C) 2006-2008 Barco N.V.
>> + * Derived from the Cypress cy7c67200/300 ezusb linux driver and
>> + * based on multiple host controller drivers inside the linux kernel.
>> + *
>> + * 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., 51 Franklin Street, Fifth Floor, Boston,
>> + * MA 02110-1301 USA.
>> + */
>> +
>> +/*
>> + * This file implements the common infrastructure for using the c67x00.
>> + * It is both the link between the platform configuration and subdrivers and
>> + * the link between the common hardware parts and the subdrivers (e.g.
>> + * interrupt handling).
>> + *
>> + * The c67x00 has 2 SIE's (serial interface engine) wich can be configured
>> + * to be host, device or OTG (with some limitations, E.G. only SIE1 can be OTG).
>> + *
>> + * Depending on the platform configuration, the SIE's are created and
>> + * the corresponding subdriver is initialized (c67x00_probe_sie).
>> + */
>> +
>> +#include <linux/device.h>
>> +#include <linux/io.h>
>> +#include <linux/list.h>
>> +#include <linux/usb.h>
>> +#include <linux/usb/c67x00.h>
>> +
>> +#include "c67x00.h"
>> +#include "c67x00-hcd.h"
>> +
>> +static void c67x00_probe_sie(struct c67x00_sie *sie,
>> + struct c67x00_device *dev, int sie_num)
>> +{
>> + spin_lock_init(&sie->lock);
>> + sie->dev = dev;
>> + sie->sie_num = sie_num;
>> + sie->mode = c67x00_sie_config(dev->pdata->sie_config, sie_num);
>> +
>> + switch (sie->mode) {
>> + case C67X00_SIE_HOST:
>> + c67x00_hcd_probe(sie);
>> + break;
>> +
>> + case C67X00_SIE_UNUSED:
>> + dev_info(sie_dev(sie),
>> + "Not using SIE %d as requested\n", sie->sie_num);
>> + break;
>> +
>> + default:
>> + dev_err(sie_dev(sie),
>> + "Unsupported configuration: 0x%x for SIE %d\n",
>> + sie->mode, sie->sie_num);
>> + break;
>> + }
>> +}
>> +
>> +static void c67x00_remove_sie(struct c67x00_sie *sie)
>> +{
>> + switch (sie->mode) {
>> + case C67X00_SIE_HOST:
>> + c67x00_hcd_remove(sie);
>> + break;
>> +
>> + default:
>> + break;
>> + }
>> +}
>> +
>> +static irqreturn_t c67x00_irq(int irq, void *__dev)
>> +{
>> + struct c67x00_device *c67x00 = __dev;
>> + struct c67x00_sie *sie;
>> + u16 msg, int_status;
>> + int i, count = 8;
>> +
>> + int_status = c67x00_ll_hpi_status(c67x00);
>> + if (!int_status)
>> + return IRQ_NONE;
>> +
>> + while (int_status != 0 && (count-- >= 0)) {
>> + c67x00_ll_irq(c67x00, int_status);
>> + for (i = 0; i < C67X00_SIES; i++) {
>> + sie = &c67x00->sie[i];
>> + msg = 0;
>> + if (int_status & SIEMSG_FLG(i))
>> + msg = c67x00_ll_fetch_siemsg(c67x00, i);
>> + if (sie->irq)
>> + sie->irq(sie, int_status, msg);
>> + }
>> + int_status = c67x00_ll_hpi_status(c67x00);
>> + }
>> +
>> + if (int_status)
>> + dev_warn(&c67x00->pdev->dev, "Not all interrupts handled! "
>> + "status = 0x%04x\n", int_status);
>> +
>> + return IRQ_HANDLED;
>> +}
>> +
>> +/* ------------------------------------------------------------------------- */
>> +
>> +static int __devinit c67x00_drv_probe(struct platform_device *pdev)
>> +{
>> + struct c67x00_device *c67x00;
>> + struct c67x00_platform_data *pdata;
>> + struct resource *res, *res2;
>> + int ret, i;
>> +
>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> + if (!res)
>> + return -ENODEV;
>> +
>> + res2 = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
>> + if (!res2)
>> + return -ENODEV;
>> +
>> + pdata = pdev->dev.platform_data;
>> + if (!pdata)
>> + return -ENODEV;
>> +
>> + c67x00 = kzalloc(sizeof(*c67x00), GFP_KERNEL);
>> + if (!c67x00)
>> + return -ENOMEM;
>> +
>> + if (!request_mem_region(res->start, res->end - res->start + 1,
>> + pdev->name)) {
>> + dev_err(&pdev->dev, "Memory region busy\n");
>> + ret = -EBUSY;
>> + goto request_mem_failed;
>> + }
>> + c67x00->hpi.base = ioremap(res->start, res->end - res->start + 1);
>> + if (!c67x00->hpi.base) {
>> + dev_err(&pdev->dev, "Unable to map HPI registers\n");
>> + ret = -EIO;
>> + goto map_failed;
>> + }
>> +
>> + spin_lock_init(&c67x00->hpi.lock);
>> + c67x00->hpi.regstep = pdata->hpi_regstep;
>> + c67x00->pdata = pdev->dev.platform_data;
>> + c67x00->pdev = pdev;
>> +
>> + c67x00_ll_init(c67x00);
>> + c67x00_ll_hpi_reg_init(c67x00);
>> +
>> + ret = request_irq(res2->start, c67x00_irq, 0, pdev->name, c67x00);
>> + if (ret) {
>> + dev_err(&pdev->dev, "Cannot claim IRQ\n");
>> + goto request_irq_failed;
>> + }
>> +
>> + ret = c67x00_ll_reset(c67x00);
>> + if (ret) {
>> + dev_err(&pdev->dev, "Device reset failed\n");
>> + goto reset_failed;
>> + }
>> +
>> + for (i = 0; i < C67X00_SIES; i++)
>> + c67x00_probe_sie(&c67x00->sie[i], c67x00, i);
>> +
>> + platform_set_drvdata(pdev, c67x00);
>> +
>> + return 0;
>> +
>> + reset_failed:
>> + free_irq(res2->start, c67x00);
>> + request_irq_failed:
>> + iounmap(c67x00->hpi.base);
>> + map_failed:
>> + release_mem_region(res->start, res->end - res->start + 1);
>> + request_mem_failed:
>> + kfree(c67x00);
>> +
>> + return ret;
>> +}
>> +
>> +static int __devexit c67x00_drv_remove(struct platform_device *pdev)
>> +{
>> + struct c67x00_device *c67x00 = platform_get_drvdata(pdev);
>> + struct resource *res;
>> + int i;
>> +
>> + for (i = 0; i < C67X00_SIES; i++)
>> + c67x00_remove_sie(&c67x00->sie[i]);
>> +
>> + c67x00_ll_release(c67x00);
>> +
>> + res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
>> + if (res)
>> + free_irq(res->start, c67x00);
>> +
>> + iounmap(c67x00->hpi.base);
>> +
>> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> + if (res)
>> + release_mem_region(res->start, res->end - res->start + 1);
>> +
>> + kfree(c67x00);
>> +
>> + return 0;
>> +}
>> +
>> +static struct platform_driver c67x00_driver = {
>> + .probe = c67x00_drv_probe,
>> + .remove = __devexit_p(c67x00_drv_remove),
>> + .driver = {
>> + .owner = THIS_MODULE,
>> + .name = "c67x00",
>> + },
>> +};
>> +MODULE_ALIAS("platform:c67x00");
>> +
>> +static int __init c67x00_init(void)
>> +{
>> + return platform_driver_register(&c67x00_driver);
>> +}
>> +
>> +static void __exit c67x00_exit(void)
>> +{
>> + platform_driver_unregister(&c67x00_driver);
>> +}
>> +
>> +module_init(c67x00_init);
>> +module_exit(c67x00_exit);
>> +
>> +MODULE_AUTHOR("Peter Korsgaard, Jan Veldeman, Grant Likely");
>> +MODULE_DESCRIPTION("Cypress C67X00 USB Controller Driver");
>> +MODULE_LICENSE("GPL");
>> Index: software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-hcd.c
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-hcd.c (revision 0)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-hcd.c (revision 0)
>> @@ -0,0 +1,412 @@
>> +/*
>> + * c67x00-hcd.c: Cypress C67X00 USB Host Controller Driver
>> + *
>> + * Copyright (C) 2006-2008 Barco N.V.
>> + * Derived from the Cypress cy7c67200/300 ezusb linux driver and
>> + * based on multiple host controller drivers inside the linux kernel.
>> + *
>> + * 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., 51 Franklin Street, Fifth Floor, Boston,
>> + * MA 02110-1301 USA.
>> + */
>> +
>> +#include <linux/device.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/usb.h>
>> +
>> +#include "c67x00.h"
>> +#include "c67x00-hcd.h"
>> +
>> +/* --------------------------------------------------------------------------
>> + * Root Hub Support
>> + */
>> +
>> +static __u8 c67x00_hub_des[] = {
>> + 0x09, /* __u8 bLength; */
>> + 0x29, /* __u8 bDescriptorType; Hub-descriptor */
>> + 0x02, /* __u8 bNbrPorts; */
>> + 0x00, /* __u16 wHubCharacteristics; */
>> + 0x00, /* (per-port OC, no power switching) */
>> + 0x32, /* __u8 bPwrOn2pwrGood; 2ms */
>> + 0x00, /* __u8 bHubContrCurrent; 0 mA */
>> + 0x00, /* __u8 DeviceRemovable; ** 7 Ports max ** */
>> + 0xff, /* __u8 PortPwrCtrlMask; ** 7 ports max ** */
>> +};
>> +
>> +static void c67x00_hub_reset_host_port(struct c67x00_sie *sie, int port)
>> +{
>> + struct c67x00_hcd *c67x00 = sie->private_data;
>> + unsigned long flags;
>> +
>> + c67x00_ll_husb_reset(sie, port);
>> +
>> + spin_lock_irqsave(&c67x00->lock, flags);
>> + c67x00_ll_husb_reset_port(sie, port);
>> + spin_unlock_irqrestore(&c67x00->lock, flags);
>> +
>> + c67x00_ll_set_husb_eot(sie->dev, DEFAULT_EOT);
>> +}
>> +
>> +static int c67x00_hub_status_data(struct usb_hcd *hcd, char *buf)
>> +{
>> + struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
>> + struct c67x00_sie *sie = c67x00->sie;
>> + u16 status;
>> + int i;
>> +
>> + *buf = 0;
>> + status = c67x00_ll_usb_get_status(sie);
>> + for (i = 0; i < C67X00_PORTS; i++)
>> + if (status & PORT_CONNECT_CHANGE(i))
>> + *buf |= (1 << i);
>> +
>> + /* bit 0 denotes hub change, b1..n port change */
>> + *buf <<= 1;
>> +
>> + return !!*buf;
>> +}
>> +
>> +static int c67x00_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
>> + u16 wIndex, char *buf, u16 wLength)
>> +{
>> + struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
>> + struct c67x00_sie *sie = c67x00->sie;
>> + u16 status, usb_status;
>> + int len = 0;
>> + unsigned int port = wIndex-1;
>> + u16 wPortChange, wPortStatus;
>> +
>> + switch (typeReq) {
>> +
>> + case GetHubStatus:
>> + *(__le32 *) buf = cpu_to_le32(0);
>> + len = 4; /* hub power */
>> + break;
>> +
>> + case GetPortStatus:
>> + if (wIndex > C67X00_PORTS)
>> + return -EPIPE;
>> +
>> + status = c67x00_ll_usb_get_status(sie);
>> + usb_status = c67x00_ll_get_usb_ctl(sie);
>> +
>> + wPortChange = 0;
>> + if (status & PORT_CONNECT_CHANGE(port))
>> + wPortChange |= USB_PORT_STAT_C_CONNECTION;
>> +
>> + wPortStatus = USB_PORT_STAT_POWER;
>> + if (!(status & PORT_SE0_STATUS(port)))
>> + wPortStatus |= USB_PORT_STAT_CONNECTION;
>> + if (usb_status & LOW_SPEED_PORT(port)) {
>> + wPortStatus |= USB_PORT_STAT_LOW_SPEED;
>> + c67x00->low_speed_ports |= (1 << port);
>> + } else
>> + c67x00->low_speed_ports &= ~(1 << port);
>> +
>> + if (usb_status & SOF_EOP_EN(port))
>> + wPortStatus |= USB_PORT_STAT_ENABLE;
>> +
>> + *(__le16 *) buf = cpu_to_le16(wPortStatus);
>> + *(__le16 *) (buf + 2) = cpu_to_le16(wPortChange);
>> + len = 4;
>> + break;
>> +
>> + case SetHubFeature: /* We don't implement these */
>> + case ClearHubFeature:
>> + switch (wValue) {
>> + case C_HUB_OVER_CURRENT:
>> + case C_HUB_LOCAL_POWER:
>> + len = 0;
>> + break;
>> +
>> + default:
>> + return -EPIPE;
>> + }
>> + break;
>> +
>> + case SetPortFeature:
>> + if (wIndex > C67X00_PORTS)
>> + return -EPIPE;
>> +
>> + switch (wValue) {
>> + case USB_PORT_FEAT_SUSPEND:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "SetPortFeature %d (SUSPEND)\n", port);
>> + len = 0;
>> + break;
>> +
>> + case USB_PORT_FEAT_RESET:
>> + c67x00_hub_reset_host_port(sie, port);
>> + len = 0;
>> + break;
>> +
>> + case USB_PORT_FEAT_POWER:
>> + /* Power always enabled */
>> + len = 0;
>> + break;
>> +
>> + default:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "%s: SetPortFeature %d (0x%04x) Error!\n",
>> + __func__, port, wValue);
>> + return -EPIPE;
>> + }
>> + break;
>> +
>> + case ClearPortFeature:
>> + if (wIndex > C67X00_PORTS)
>> + return -EPIPE;
>> +
>> + switch (wValue) {
>> + case USB_PORT_FEAT_ENABLE:
>> + /* Reset the port so that the c67x00 also notices the
>> + * disconnect */
>> + c67x00_hub_reset_host_port(sie, port);
>> + len = 0;
>> + break;
>> +
>> + case USB_PORT_FEAT_C_ENABLE:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "ClearPortFeature (%d): C_ENABLE\n", port);
>> + len = 0;
>> + break;
>> +
>> + case USB_PORT_FEAT_SUSPEND:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "ClearPortFeature (%d): SUSPEND\n", port);
>> + len = 0;
>> + break;
>> +
>> + case USB_PORT_FEAT_C_SUSPEND:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "ClearPortFeature (%d): C_SUSPEND\n", port);
>> + len = 0;
>> + break;
>> +
>> + case USB_PORT_FEAT_POWER:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "ClearPortFeature (%d): POWER\n", port);
>> + return -EPIPE;
>> +
>> + case USB_PORT_FEAT_C_CONNECTION:
>> + c67x00_ll_usb_clear_status(sie,
>> + PORT_CONNECT_CHANGE(port));
>> + len = 0;
>> + break;
>> +
>> + case USB_PORT_FEAT_C_OVER_CURRENT:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "ClearPortFeature (%d): OVER_CURRENT\n", port);
>> + len = 0;
>> + break;
>> +
>> + case USB_PORT_FEAT_C_RESET:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "ClearPortFeature (%d): C_RESET\n", port);
>> + len = 0;
>> + break;
>> +
>> + default:
>> + dev_dbg(c67x00_hcd_dev(c67x00),
>> + "%s: ClearPortFeature %d (0x%04x) Error!\n",
>> + __func__, port, wValue);
>> + return -EPIPE;
>> + }
>> + break;
>> +
>> + case GetHubDescriptor:
>> + len = min_t(unsigned int, sizeof(c67x00_hub_des), wLength);
>> + memcpy(buf, c67x00_hub_des, len);
>> + break;
>> +
>> + default:
>> + dev_dbg(c67x00_hcd_dev(c67x00), "%s: unknown\n", __func__);
>> + return -EPIPE;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +/* ---------------------------------------------------------------------
>> + * Main part of host controller driver
>> + */
>> +
>> +/**
>> + * c67x00_hcd_irq
>> + *
>> + * This function is called from the interrupt handler in c67x00-drv.c
>> + */
>> +static void c67x00_hcd_irq(struct c67x00_sie *sie, u16 int_status, u16 msg)
>> +{
>> + struct c67x00_hcd *c67x00 = sie->private_data;
>> + struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
>> +
>> + /* Handle sie message flags */
>> + if (msg) {
>> + if (msg & HUSB_TDListDone)
>> + c67x00_sched_kick(c67x00);
>> + else
>> + dev_warn(c67x00_hcd_dev(c67x00),
>> + "Unknown SIE msg flag(s): 0x%04x\n", msg);
>> + }
>> +
>> + if (unlikely(hcd->state == HC_STATE_HALT))
>> + return;
>> +
>> + if (!test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))
>> + return;
>> +
>> + /* Handle Start of frame events */
>> + if (int_status & SOFEOP_FLG(sie->sie_num)) {
>> + c67x00_ll_usb_clear_status(sie, SOF_EOP_IRQ_FLG);
>> + c67x00_sched_kick(c67x00);
>> + set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
>> + }
>> +}
>> +
>> +/**
>> + * c67x00_hcd_start: Host controller start hook
>> + */
>> +static int c67x00_hcd_start(struct usb_hcd *hcd)
>> +{
>> + hcd->uses_new_polling = 1;
>> + hcd->state = HC_STATE_RUNNING;
>> + hcd->poll_rh = 1;
>> +
>> + return 0;
>> +}
>> +
>> +/**
>> + * c67x00_hcd_stop: Host controller stop hook
>> + */
>> +static void c67x00_hcd_stop(struct usb_hcd *hcd)
>> +{
>> + /* Nothing to do */
>> +}
>> +
>> +static int c67x00_hcd_get_frame(struct usb_hcd *hcd)
>> +{
>> + struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
>> + u16 temp_val;
>> +
>> + dev_dbg(c67x00_hcd_dev(c67x00), "%s\n", __func__);
>> + temp_val = c67x00_ll_husb_get_frame(c67x00->sie);
>> + temp_val &= HOST_FRAME_MASK;
>> + return temp_val ? (temp_val - 1) : HOST_FRAME_MASK;
>> +}
>> +
>> +static struct hc_driver c67x00_hc_driver = {
>> + .description = "c67x00-hcd",
>> + .product_desc = "Cypress C67X00 Host Controller",
>> + .hcd_priv_size = sizeof(struct c67x00_hcd),
>> + .flags = HCD_USB11 | HCD_MEMORY,
>> +
>> + /*
>> + * basic lifecycle operations
>> + */
>> + .start = c67x00_hcd_start,
>> + .stop = c67x00_hcd_stop,
>> +
>> + /*
>> + * managing i/o requests and associated device resources
>> + */
>> + .urb_enqueue = c67x00_urb_enqueue,
>> + .urb_dequeue = c67x00_urb_dequeue,
>> + .endpoint_disable = c67x00_endpoint_disable,
>> +
>> + /*
>> + * scheduling support
>> + */
>> + .get_frame_number = c67x00_hcd_get_frame,
>> +
>> + /*
>> + * root hub support
>> + */
>> + .hub_status_data = c67x00_hub_status_data,
>> + .hub_control = c67x00_hub_control,
>> +};
>> +
>> +/* ---------------------------------------------------------------------
>> + * Setup/Teardown routines
>> + */
>> +
>> +int c67x00_hcd_probe(struct c67x00_sie *sie)
>> +{
>> + struct c67x00_hcd *c67x00;
>> + struct usb_hcd *hcd;
>> + unsigned long flags;
>> + int retval;
>> +
>> + if (usb_disabled())
>> + return -ENODEV;
>> +
>> + hcd = usb_create_hcd(&c67x00_hc_driver, sie_dev(sie), "c67x00_sie");
>> + if (!hcd) {
>> + retval = -ENOMEM;
>> + goto err0;
>> + }
>> + c67x00 = hcd_to_c67x00_hcd(hcd);
>> +
>> + spin_lock_init(&c67x00->lock);
>> + c67x00->sie = sie;
>> +
>> + INIT_LIST_HEAD(&c67x00->list[PIPE_ISOCHRONOUS]);
>> + INIT_LIST_HEAD(&c67x00->list[PIPE_INTERRUPT]);
>> + INIT_LIST_HEAD(&c67x00->list[PIPE_CONTROL]);
>> + INIT_LIST_HEAD(&c67x00->list[PIPE_BULK]);
>> + c67x00->urb_count = 0;
>> + INIT_LIST_HEAD(&c67x00->td_list);
>> + c67x00->td_base_addr = CY_HCD_BUF_ADDR + SIE_TD_OFFSET(sie->sie_num);
>> + c67x00->buf_base_addr = CY_HCD_BUF_ADDR + SIE_BUF_OFFSET(sie->sie_num);
>> + c67x00->max_frame_bw = MAX_FRAME_BW_STD;
>> +
>> + c67x00_ll_husb_init_host_port(sie);
>> +
>> + init_completion(&c67x00->endpoint_disable);
>> + retval = c67x00_sched_start_scheduler(c67x00);
>> + if (retval)
>> + goto err1;
>> +
>> + retval = usb_add_hcd(hcd, 0, 0);
>> + if (retval) {
>> + dev_dbg(sie_dev(sie), "%s: usb_add_hcd returned %d\n",
>> + __func__, retval);
>> + goto err2;
>> + }
>> +
>> + spin_lock_irqsave(&sie->lock, flags);
>> + sie->private_data = c67x00;
>> + sie->irq = c67x00_hcd_irq;
>> + spin_unlock_irqrestore(&sie->lock, flags);
>> +
>> + return retval;
>> +
>> + err2:
>> + c67x00_sched_stop_scheduler(c67x00);
>> + err1:
>> + usb_put_hcd(hcd);
>> + err0:
>> + return retval;
>> +}
>> +
>> +/* may be called with controller, bus, and devices active */
>> +void c67x00_hcd_remove(struct c67x00_sie *sie)
>> +{
>> + struct c67x00_hcd *c67x00 = sie->private_data;
>> + struct usb_hcd *hcd = c67x00_hcd_to_hcd(c67x00);
>> +
>> + c67x00_sched_stop_scheduler(c67x00);
>> + usb_remove_hcd(hcd);
>> + usb_put_hcd(hcd);
>> +}
>> Index: software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-hcd.h
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-hcd.h (revision 0)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-hcd.h (revision 0)
>> @@ -0,0 +1,137 @@
>> +/*
>> + * c67x00-hcd.h: Cypress C67X00 USB HCD
>> + *
>> + * Copyright (C) 2006-2008 Barco N.V.
>> + * Derived from the Cypress cy7c67200/300 ezusb linux driver and
>> + * based on multiple host controller drivers inside the linux kernel.
>> + *
>> + * 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., 51 Franklin Street, Fifth Floor, Boston,
>> + * MA 02110-1301 USA.
>> + */
>> +
>> +#ifndef _USB_C67X00_HCD_H
>> +#define _USB_C67X00_HCD_H
>> +
>> +#include <linux/kernel.h>
>> +#include <linux/spinlock.h>
>> +#include <linux/list.h>
>> +#include <linux/usb.h>
>> +#include "../core/hcd.h"
>> +#include "c67x00.h"
>> +
>> +/*
>> + * The following parameters depend on the CPU speed, bus speed, ...
>> + * These can be tuned for specific use cases, e.g. if isochronous transfers
>> + * are very important, bandwith can be sacrificed to guarantee that the
>> + * 1ms deadline will be met.
>> + * If bulk transfers are important, the MAX_FRAME_BW can be increased,
>> + * but some (or many) isochronous deadlines might not be met.
>> + *
>> + * The values are specified in bittime.
>> + */
>> +
>> +/*
>> + * The current implementation switches between _STD (default) and _ISO (when
>> + * isochronous transfers are scheduled), in order to optimize the throughput
>> + * in normal cicrumstances, but also provide good isochronous behaviour.
>> + *
>> + * Bandwidth is described in bit time so with a 12MHz USB clock and 1ms
>> + * frames; there are 12000 bit times per frame.
>> + */
>> +
>> +#define TOTAL_FRAME_BW 12000
>> +#define DEFAULT_EOT 2250
>> +
>> +#define MAX_FRAME_BW_STD (TOTAL_FRAME_BW - DEFAULT_EOT)
>> +#define MAX_FRAME_BW_ISO 2400
>> +
>> +/*
>> + * Periodic transfers may only use 90% of the full frame, but as
>> + * we currently don't even use 90% of the full frame, we may
>> + * use the full usable time for periodic transfers.
>> + */
>> +#define MAX_PERIODIC_BW(full_bw) full_bw
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +struct c67x00_hcd {
>> + spinlock_t lock;
>> + struct c67x00_sie *sie;
>> + unsigned int low_speed_ports; /* bitmask of low speed ports */
>> + unsigned int urb_count;
>> + unsigned int urb_iso_count;
>> +
>> + struct list_head list[4]; /* iso, int, ctrl, bulk */
>> +#if PIPE_BULK != 3
>> +#error "Sanity check failed, this code presumes PIPE_... to range from 0 to 3"
>> +#endif
>> +
>> + /* USB bandwidth allocated to td_list */
>> + int bandwidth_allocated;
>> + /* USB bandwidth allocated for isoc/int transfer */
>> + int periodic_bw_allocated;
>> + struct list_head td_list;
>> + int max_frame_bw;
>> +
>> + u16 td_base_addr;
>> + u16 buf_base_addr;
>> + u16 next_td_addr;
>> + u16 next_buf_addr;
>> +
>> + struct tasklet_struct tasklet;
>> +
>> + struct completion endpoint_disable;
>> +
>> + u16 current_frame;
>> + u16 last_frame;
>> +};
>> +
>> +static inline struct c67x00_hcd *hcd_to_c67x00_hcd(struct usb_hcd *hcd)
>> +{
>> + return (struct c67x00_hcd *)(hcd->hcd_priv);
>> +}
>> +
>> +static inline struct usb_hcd *c67x00_hcd_to_hcd(struct c67x00_hcd *c67x00)
>> +{
>> + return container_of((void *)c67x00, struct usb_hcd, hcd_priv);
>> +}
>> +
>> +/* ---------------------------------------------------------------------
>> + * Functions used by c67x00-drv
>> + */
>> +
>> +int c67x00_hcd_probe(struct c67x00_sie *sie);
>> +void c67x00_hcd_remove(struct c67x00_sie *sie);
>> +
>> +/* ---------------------------------------------------------------------
>> + * Transfer Descriptor scheduling functions
>> + */
>> +//int c67x00_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags);
>> +int c67x00_urb_enqueue(struct usb_hcd *hcd, struct usb_host_endpoint *hep,
>> + struct urb *urb, gfp_t mem_flags);
>> +
>> +//int c67x00_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status);
>> +int c67x00_urb_dequeue(struct usb_hcd *hcd, struct urb *urb);
>> +void c67x00_endpoint_disable(struct usb_hcd *hcd,
>> + struct usb_host_endpoint *ep);
>> +
>> +void c67x00_hcd_msg_received(struct c67x00_sie *sie, u16 msg);
>> +void c67x00_sched_kick(struct c67x00_hcd *c67x00);
>> +int c67x00_sched_start_scheduler(struct c67x00_hcd *c67x00);
>> +void c67x00_sched_stop_scheduler(struct c67x00_hcd *c67x00);
>> +
>> +#define c67x00_hcd_dev(x) (c67x00_hcd_to_hcd(x)->self.controller)
>> +
>> +#endif /* _USB_C67X00_HCD_H */
>> Index: software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-ll-hpi.c
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-ll-hpi.c (revision 0)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-ll-hpi.c (revision 0)
>> @@ -0,0 +1,481 @@
>> +/*
>> + * c67x00-ll-hpi.c: Cypress C67X00 USB Low level interface using HPI
>> + *
>> + * Copyright (C) 2006-2008 Barco N.V.
>> + * Derived from the Cypress cy7c67200/300 ezusb linux driver and
>> + * based on multiple host controller drivers inside the linux kernel.
>> + *
>> + * 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., 51 Franklin Street, Fifth Floor, Boston,
>> + * MA 02110-1301 USA.
>> + */
>> +
>> +#include <asm/byteorder.h>
>> +#include <linux/io.h>
>> +#include <linux/jiffies.h>
>> +#include <linux/usb/c67x00.h>
>> +#include "c67x00.h"
>> +
>> +#define COMM_REGS 14
>> +
>> +struct c67x00_lcp_int_data {
>> + u16 regs[COMM_REGS];
>> +};
>> +
>> +/* -------------------------------------------------------------------------- */
>> +/* Interface definitions */
>> +
>> +#define COMM_ACK 0x0FED
>> +#define COMM_NAK 0xDEAD
>> +
>> +#define COMM_RESET 0xFA50
>> +#define COMM_EXEC_INT 0xCE01
>> +#define COMM_INT_NUM 0x01C2
>> +
>> +/* Registers 0 to COMM_REGS-1 */
>> +#define COMM_R(x) (0x01C4 + 2 * (x))
>> +
>> +#define HUSB_SIE_pCurrentTDPtr(x) ((x) ? 0x01B2 : 0x01B0)
>> +#define HUSB_SIE_pTDListDone_Sem(x) ((x) ? 0x01B8 : 0x01B6)
>> +#define HUSB_pEOT 0x01B4
>> +
>> +/* Software interrupts */
>> +/* 114, 115: */
>> +#define HUSB_SIE_INIT_INT(x) ((x) ? 0x0073 : 0x0072)
>> +#define HUSB_RESET_INT 0x0074
>> +
>> +#define SUSB_INIT_INT 0x0071
>> +#define SUSB_INIT_INT_LOC (SUSB_INIT_INT * 2)
>> +
>> +/* -----------------------------------------------------------------------
>> + * HPI implementation
>> + *
>> + * The c67x00 chip also support control via SPI or HSS serial
>> + * interfaces. However, this driver assumes that register access can
>> + * be performed from IRQ context. While this is a safe assuption with
>> + * the HPI interface, it is not true for the serial interfaces.
>> + */
>> +
>> +/* HPI registers */
>> +#define HPI_DATA 0
>> +#define HPI_MAILBOX 1
>> +#define HPI_ADDR 2
>> +#define HPI_STATUS 3
>> +
>> +static inline u16 hpi_read_reg(struct c67x00_device *dev, int reg)
>> +{
>> + return __raw_readw(dev->hpi.base + reg * dev->hpi.regstep);
>> +}
>> +
>> +static inline void hpi_write_reg(struct c67x00_device *dev, int reg, u16 value)
>> +{
>> + __raw_writew(value, dev->hpi.base + reg * dev->hpi.regstep);
>> +}
>> +
>> +static inline u16 hpi_read_word_nolock(struct c67x00_device *dev, u16 reg)
>> +{
>> + hpi_write_reg(dev, HPI_ADDR, reg);
>> + return hpi_read_reg(dev, HPI_DATA);
>> +}
>> +
>> +static u16 hpi_read_word(struct c67x00_device *dev, u16 reg)
>> +{
>> + u16 value;
>> + unsigned long flags;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> + value = hpi_read_word_nolock(dev, reg);
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +
>> + return value;
>> +}
>> +
>> +static void hpi_write_word_nolock(struct c67x00_device *dev, u16 reg, u16 value)
>> +{
>> + hpi_write_reg(dev, HPI_ADDR, reg);
>> + hpi_write_reg(dev, HPI_DATA, value);
>> +}
>> +
>> +static void hpi_write_word(struct c67x00_device *dev, u16 reg, u16 value)
>> +{
>> + unsigned long flags;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> + hpi_write_word_nolock(dev, reg, value);
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +}
>> +
>> +/*
>> + * Only data is little endian, addr has cpu endianess
>> + */
>> +static void hpi_write_words_le16(struct c67x00_device *dev, u16 addr,
>> + __le16 *data, u16 count)
>> +{
>> + unsigned long flags;
>> + int i;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> +
>> + hpi_write_reg(dev, HPI_ADDR, addr);
>> + for (i = 0; i < count; i++)
>> + hpi_write_reg(dev, HPI_DATA, le16_to_cpu(*data++));
>> +
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +}
>> +
>> +/*
>> + * Only data is little endian, addr has cpu endianess
>> + */
>> +static void hpi_read_words_le16(struct c67x00_device *dev, u16 addr,
>> + __le16 *data, u16 count)
>> +{
>> + unsigned long flags;
>> + int i;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> + hpi_write_reg(dev, HPI_ADDR, addr);
>> + for (i = 0; i < count; i++)
>> + *data++ = cpu_to_le16(hpi_read_reg(dev, HPI_DATA));
>> +
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +}
>> +
>> +static void hpi_set_bits(struct c67x00_device *dev, u16 reg, u16 mask)
>> +{
>> + u16 value;
>> + unsigned long flags;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> + value = hpi_read_word_nolock(dev, reg);
>> + hpi_write_word_nolock(dev, reg, value | mask);
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +}
>> +
>> +static void hpi_clear_bits(struct c67x00_device *dev, u16 reg, u16 mask)
>> +{
>> + u16 value;
>> + unsigned long flags;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> + value = hpi_read_word_nolock(dev, reg);
>> + hpi_write_word_nolock(dev, reg, value & ~mask);
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +}
>> +
>> +static u16 hpi_recv_mbox(struct c67x00_device *dev)
>> +{
>> + u16 value;
>> + unsigned long flags;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> + value = hpi_read_reg(dev, HPI_MAILBOX);
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +
>> + return value;
>> +}
>> +
>> +static u16 hpi_send_mbox(struct c67x00_device *dev, u16 value)
>> +{
>> + unsigned long flags;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> + hpi_write_reg(dev, HPI_MAILBOX, value);
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +
>> + return value;
>> +}
>> +
>> +u16 c67x00_ll_hpi_status(struct c67x00_device *dev)
>> +{
>> + u16 value;
>> + unsigned long flags;
>> +
>> + spin_lock_irqsave(&dev->hpi.lock, flags);
>> + value = hpi_read_reg(dev, HPI_STATUS);
>> + spin_unlock_irqrestore(&dev->hpi.lock, flags);
>> +
>> + return value;
>> +}
>> +
>> +void c67x00_ll_hpi_reg_init(struct c67x00_device *dev)
>> +{
>> + int i;
>> +
>> + hpi_recv_mbox(dev);
>> + c67x00_ll_hpi_status(dev);
>> + hpi_write_word(dev, HPI_IRQ_ROUTING_REG, 0);
>> +
>> + for (i = 0; i < C67X00_SIES; i++) {
>> + hpi_write_word(dev, SIEMSG_REG(i), 0);
>> + hpi_read_word(dev, SIEMSG_REG(i));
>> + }
>> +}
>> +
>> +void c67x00_ll_hpi_enable_sofeop(struct c67x00_sie *sie)
>> +{
>> + hpi_set_bits(sie->dev, HPI_IRQ_ROUTING_REG,
>> + SOFEOP_TO_HPI_EN(sie->sie_num));
>> +}
>> +
>> +void c67x00_ll_hpi_disable_sofeop(struct c67x00_sie *sie)
>> +{
>> + hpi_clear_bits(sie->dev, HPI_IRQ_ROUTING_REG,
>> + SOFEOP_TO_HPI_EN(sie->sie_num));
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +/* Transactions */
>> +
>> +static inline u16 ll_recv_msg(struct c67x00_device *dev)
>> +{
>> + u16 res;
>> +
>> + res = wait_for_completion_timeout(&dev->hpi.lcp.msg_received, 5 * HZ);
>> + WARN_ON(!res);
>> +
>> + return (res == 0) ? -EIO : 0;
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +/* General functions */
>> +
>> +u16 c67x00_ll_fetch_siemsg(struct c67x00_device *dev, int sie_num)
>> +{
>> + u16 val;
>> +
>> + val = hpi_read_word(dev, SIEMSG_REG(sie_num));
>> + /* clear register to allow next message */
>> + hpi_write_word(dev, SIEMSG_REG(sie_num), 0);
>> +
>> + return val;
>> +}
>> +
>> +u16 c67x00_ll_get_usb_ctl(struct c67x00_sie *sie)
>> +{
>> + return hpi_read_word(sie->dev, USB_CTL_REG(sie->sie_num));
>> +}
>> +
>> +/**
>> + * c67x00_ll_usb_clear_status - clear the USB status bits
>> + */
>> +void c67x00_ll_usb_clear_status(struct c67x00_sie *sie, u16 bits)
>> +{
>> + hpi_write_word(sie->dev, USB_STAT_REG(sie->sie_num), bits);
>> +}
>> +
>> +u16 c67x00_ll_usb_get_status(struct c67x00_sie *sie)
>> +{
>> + return hpi_read_word(sie->dev, USB_STAT_REG(sie->sie_num));
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static int c67x00_comm_exec_int(struct c67x00_device *dev, u16 nr,
>> + struct c67x00_lcp_int_data *data)
>> +{
>> + int i, rc;
>> +
>> + mutex_lock(&dev->hpi.lcp.mutex);
>> + hpi_write_word(dev, COMM_INT_NUM, nr);
>> + for (i = 0; i < COMM_REGS; i++)
>> + hpi_write_word(dev, COMM_R(i), data->regs[i]);
>> + hpi_send_mbox(dev, COMM_EXEC_INT);
>> + rc = ll_recv_msg(dev);
>> + mutex_unlock(&dev->hpi.lcp.mutex);
>> +
>> + return rc;
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +/* Host specific functions */
>> +
>> +void c67x00_ll_set_husb_eot(struct c67x00_device *dev, u16 value)
>> +{
>> + mutex_lock(&dev->hpi.lcp.mutex);
>> + hpi_write_word(dev, HUSB_pEOT, value);
>> + mutex_unlock(&dev->hpi.lcp.mutex);
>> +}
>> +
>> +static inline void c67x00_ll_husb_sie_init(struct c67x00_sie *sie)
>> +{
>> + struct c67x00_device *dev = sie->dev;
>> + struct c67x00_lcp_int_data data;
>> + int rc;
>> +
>> + rc = c67x00_comm_exec_int(dev, HUSB_SIE_INIT_INT(sie->sie_num), &data);
>> + BUG_ON(rc); /* No return path for error code; crash spectacularly */
>> +}
>> +
>> +void c67x00_ll_husb_reset(struct c67x00_sie *sie, int port)
>> +{
>> + struct c67x00_device *dev = sie->dev;
>> + struct c67x00_lcp_int_data data;
>> + int rc;
>> +
>> + data.regs[0] = 50; /* Reset USB port for 50ms */
>> + data.regs[1] = port | (sie->sie_num << 1);
>> + rc = c67x00_comm_exec_int(dev, HUSB_RESET_INT, &data);
>> + BUG_ON(rc); /* No return path for error code; crash spectacularly */
>> +}
>> +
>> +void c67x00_ll_husb_set_current_td(struct c67x00_sie *sie, u16 addr)
>> +{
>> + hpi_write_word(sie->dev, HUSB_SIE_pCurrentTDPtr(sie->sie_num), addr);
>> +}
>> +
>> +u16 c67x00_ll_husb_get_current_td(struct c67x00_sie *sie)
>> +{
>> + return hpi_read_word(sie->dev, HUSB_SIE_pCurrentTDPtr(sie->sie_num));
>> +}
>> +
>> +u16 c67x00_ll_husb_get_frame(struct c67x00_sie *sie)
>> +{
>> + return hpi_read_word(sie->dev, HOST_FRAME_REG(sie->sie_num));
>> +}
>> +
>> +void c67x00_ll_husb_init_host_port(struct c67x00_sie *sie)
>> +{
>> + /* Set port into host mode */
>> + hpi_set_bits(sie->dev, USB_CTL_REG(sie->sie_num), HOST_MODE);
>> + c67x00_ll_husb_sie_init(sie);
>> + /* Clear interrupts */
>> + c67x00_ll_usb_clear_status(sie, HOST_STAT_MASK);
>> + /* Check */
>> + if (!(hpi_read_word(sie->dev, USB_CTL_REG(sie->sie_num)) & HOST_MODE))
>> + dev_warn(sie_dev(sie),
>> + "SIE %d not set to host mode\n", sie->sie_num);
>> +}
>> +
>> +void c67x00_ll_husb_reset_port(struct c67x00_sie *sie, int port)
>> +{
>> + /* Clear connect change */
>> + c67x00_ll_usb_clear_status(sie, PORT_CONNECT_CHANGE(port));
>> +
>> + /* Enable interrupts */
>> + hpi_set_bits(sie->dev, HPI_IRQ_ROUTING_REG,
>> + SOFEOP_TO_CPU_EN(sie->sie_num));
>> + hpi_set_bits(sie->dev, HOST_IRQ_EN_REG(sie->sie_num),
>> + SOF_EOP_IRQ_EN | DONE_IRQ_EN);
>> +
>> + /* Enable pull down transistors */
>> + hpi_set_bits(sie->dev, USB_CTL_REG(sie->sie_num), PORT_RES_EN(port));
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +void c67x00_ll_irq(struct c67x00_device *dev, u16 int_status)
>> +{
>> + if ((int_status & MBX_OUT_FLG) == 0)
>> + return;
>> +
>> + dev->hpi.lcp.last_msg = hpi_recv_mbox(dev);
>> + complete(&dev->hpi.lcp.msg_received);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +int c67x00_ll_reset(struct c67x00_device *dev)
>> +{
>> + int rc;
>> +
>> + mutex_lock(&dev->hpi.lcp.mutex);
>> + hpi_send_mbox(dev, COMM_RESET);
>> + rc = ll_recv_msg(dev);
>> + mutex_unlock(&dev->hpi.lcp.mutex);
>> +
>> + return rc;
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/**
>> + * c67x00_ll_write_mem_le16 - write into c67x00 memory
>> + * Only data is little endian, addr has cpu endianess.
>> + */
>> +void c67x00_ll_write_mem_le16(struct c67x00_device *dev, u16 addr,
>> + void *data, int len)
>> +{
>> + u8 *buf = data;
>> +
>> + /* Sanity check */
>> + if (addr + len > 0xffff) {
>> + dev_err(&dev->pdev->dev,
>> + "Trying to write beyond writable region!\n");
>> + return;
>> + }
>> +
>> + if (addr & 0x01) {
>> + /* unaligned access */
>> + u16 tmp;
>> + tmp = hpi_read_word(dev, addr - 1);
>> + tmp = (tmp & 0x00ff) | (*buf++ << 8);
>> + hpi_write_word(dev, addr - 1, tmp);
>> + addr++;
>> + len--;
>> + }
>> +
>> + hpi_write_words_le16(dev, addr, (__le16 *)buf, len / 2);
>> + buf += len & ~0x01;
>> + addr += len & ~0x01;
>> + len &= 0x01;
>> +
>> + if (len) {
>> + u16 tmp;
>> + tmp = hpi_read_word(dev, addr);
>> + tmp = (tmp & 0xff00) | *buf;
>> + hpi_write_word(dev, addr, tmp);
>> + }
>> +}
>> +
>> +/**
>> + * c67x00_ll_read_mem_le16 - read from c67x00 memory
>> + * Only data is little endian, addr has cpu endianess.
>> + */
>> +void c67x00_ll_read_mem_le16(struct c67x00_device *dev, u16 addr,
>> + void *data, int len)
>> +{
>> + u8 *buf = data;
>> +
>> + if (addr & 0x01) {
>> + /* unaligned access */
>> + u16 tmp;
>> + tmp = hpi_read_word(dev, addr - 1);
>> + *buf++ = (tmp >> 8) & 0x00ff;
>> + addr++;
>> + len--;
>> + }
>> +
>> + hpi_read_words_le16(dev, addr, (__le16 *)buf, len / 2);
>> + buf += len & ~0x01;
>> + addr += len & ~0x01;
>> + len &= 0x01;
>> +
>> + if (len) {
>> + u16 tmp;
>> + tmp = hpi_read_word(dev, addr);
>> + *buf = tmp & 0x00ff;
>> + }
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +void c67x00_ll_init(struct c67x00_device *dev)
>> +{
>> + mutex_init(&dev->hpi.lcp.mutex);
>> + init_completion(&dev->hpi.lcp.msg_received);
>> +}
>> +
>> +void c67x00_ll_release(struct c67x00_device *dev)
>> +{
>> +}
>> Index: software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-sched.c
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-sched.c (revision 0)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00-sched.c (revision 0)
>> @@ -0,0 +1,1211 @@
>> +/*
>> + * c67x00-sched.c: Cypress C67X00 USB Host Controller Driver - TD scheduling
>> + *
>> + * Copyright (C) 2006-2008 Barco N.V.
>> + * Derived from the Cypress cy7c67200/300 ezusb linux driver and
>> + * based on multiple host controller drivers inside the linux kernel.
>> + *
>> + * 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., 51 Franklin Street, Fifth Floor, Boston,
>> + * MA 02110-1301 USA.
>> + */
>> +
>> +#include <linux/kthread.h>
>> +#include <linux/kernel.h>
>> +
>> +#include "c67x00.h"
>> +#include "c67x00-hcd.h"
>> +
>> +//#define DEBUG
>> +
>> +/*
>> + * These are the stages for a control urb, they are kept
>> + * in both urb->interval and td->privdata.
>> + */
>> +#define SETUP_STAGE 0
>> +#define DATA_STAGE 1
>> +#define STATUS_STAGE 2
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/**
>> + * struct c67x00_ep_data: Host endpoint data structure
>> + */
>> +struct c67x00_ep_data {
>> + struct list_head queue;
>> + struct list_head node;
>> + struct usb_host_endpoint *hep;
>> + struct usb_device *dev;
>> + u16 next_frame; /* For int/isoc transactions */
>> +};
>> +
>> +/**
>> + * struct c67x00_td
>> + *
>> + * Hardware parts are little endiannes, SW in CPU endianess.
>> + */
>> +struct c67x00_td {
>> + /* HW specific part */
>> + __le16 ly_base_addr; /* Bytes 0-1 */
>> + __le16 port_length; /* Bytes 2-3 */
>> + u8 pid_ep; /* Byte 4 */
>> + u8 dev_addr; /* Byte 5 */
>> + u8 ctrl_reg; /* Byte 6 */
>> + u8 status; /* Byte 7 */
>> + u8 retry_cnt; /* Byte 8 */
>> +#define TT_OFFSET 2
>> +#define TT_CONTROL 0
>> +#define TT_ISOCHRONOUS 1
>> +#define TT_BULK 2
>> +#define TT_INTERRUPT 3
>> + u8 residue; /* Byte 9 */
>> + __le16 next_td_addr; /* Bytes 10-11 */
>> + /* SW part */
>> + struct list_head td_list;
>> + u16 td_addr;
>> + void *data;
>> + struct urb *urb;
>> + unsigned long privdata;
>> +
>> + /* These are needed for handling the toggle bits:
>> + * an urb can be dequeued while a td is in progress
>> + * after checking the td, the toggle bit might need to
>> + * be fixed */
>> + struct c67x00_ep_data *ep_data;
>> + unsigned int pipe;
>> +};
>> +
>> +struct c67x00_urb_priv {
>> + struct list_head hep_node;
>> + struct urb *urb;
>> + int port;
>> + int cnt; /* packet number for isoc */
>> + int status;
>> + struct c67x00_ep_data *ep_data;
>> +};
>> +
>> +#define td_udev(td) ((td)->ep_data->dev)
>> +
>> +#define CY_TD_SIZE 12
>> +
>> +#define TD_PIDEP_OFFSET 0x04
>> +#define TD_PIDEPMASK_PID 0xF0
>> +#define TD_PIDEPMASK_EP 0x0F
>> +#define TD_PORTLENMASK_DL 0x02FF
>> +#define TD_PORTLENMASK_PN 0xC000
>> +
>> +#define TD_STATUS_OFFSET 0x07
>> +#define TD_STATUSMASK_ACK 0x01
>> +#define TD_STATUSMASK_ERR 0x02
>> +#define TD_STATUSMASK_TMOUT 0x04
>> +#define TD_STATUSMASK_SEQ 0x08
>> +#define TD_STATUSMASK_SETUP 0x10
>> +#define TD_STATUSMASK_OVF 0x20
>> +#define TD_STATUSMASK_NAK 0x40
>> +#define TD_STATUSMASK_STALL 0x80
>> +
>> +#define TD_ERROR_MASK (TD_STATUSMASK_ERR | TD_STATUSMASK_TMOUT | \
>> + TD_STATUSMASK_STALL)
>> +
>> +#define TD_RETRYCNT_OFFSET 0x08
>> +#define TD_RETRYCNTMASK_ACT_FLG 0x10
>> +#define TD_RETRYCNTMASK_TX_TYPE 0x0C
>> +#define TD_RETRYCNTMASK_RTY_CNT 0x03
>> +
>> +#define TD_RESIDUE_OVERFLOW 0x80
>> +
>> +#define TD_PID_IN 0x90
>> +
>> +/* Residue: signed 8bits, neg -> OVERFLOW, pos -> UNDERFLOW */
>> +#define td_residue(td) ((__s8)(td->residue))
>> +#define td_ly_base_addr(td) (__le16_to_cpu((td)->ly_base_addr))
>> +#define td_port_length(td) (__le16_to_cpu((td)->port_length))
>> +#define td_next_td_addr(td) (__le16_to_cpu((td)->next_td_addr))
>> +
>> +#define td_active(td) ((td)->retry_cnt & TD_RETRYCNTMASK_ACT_FLG)
>> +#define td_length(td) (td_port_length(td) & TD_PORTLENMASK_DL)
>> +
>> +#define td_sequence_ok(td) (!td->status || \
>> + (!(td->status & TD_STATUSMASK_SEQ) == \
>> + !(td->ctrl_reg & SEQ_SEL)))
>> +
>> +#define td_acked(td) (!td->status || \
>> + (td->status & TD_STATUSMASK_ACK))
>> +#define td_actual_bytes(td) (td_length(td) - td_residue(td))
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +#ifdef DEBUG
>> +
>> +/**
>> + * dbg_td - Dump the contents of the TD
>> + */
>> +static void dbg_td(struct c67x00_hcd *c67x00, struct c67x00_td *td, char *msg)
>> +{
>> + struct device *dev = c67x00_hcd_dev(c67x00);
>> + int i, len = td_length(td);
>> + unsigned char *k;
>> + dev_dbg(dev, "### %s at 0x%04x\n", msg, td->td_addr);
>> + dev_dbg(dev, "urb: 0x%p\n", td->urb);
>> + dev_dbg(dev, "endpoint: %4d\n", usb_pipeendpoint(td->pipe));
>> + dev_dbg(dev, "pipeout: %4d\n", usb_pipeout(td->pipe));
>> + dev_dbg(dev, "ly_base_addr: 0x%04x\n", td_ly_base_addr(td));
>> + dev_dbg(dev, "port_length: 0x%04x\n", td_port_length(td));
>> + dev_dbg(dev, "pid_ep: 0x%02x\n", td->pid_ep);
>> + dev_dbg(dev, "dev_addr: 0x%02x\n", td->dev_addr);
>> + dev_dbg(dev, "ctrl_reg: 0x%02x\n", td->ctrl_reg);
>> + dev_dbg(dev, "status: 0x%02x\n", td->status);
>> + dev_dbg(dev, "retry_cnt: 0x%02x\n", td->retry_cnt);
>> + dev_dbg(dev, "residue: 0x%02x\n", td->residue);
>> + dev_dbg(dev, "next_td_addr: 0x%04x\n", td_next_td_addr(td));
>> + dev_dbg(dev, "data:");
>> + for (i = 0; i < len; i++) {
>> + if (!(i % 8))
>> + printk("\n ");
>> + k = (td->data + i);
>> + printk(" 0x%02x", *k);
>> + }
>> + printk("\n");
>> +}
>> +#else /* DEBUG */
>> +
>> +static inline void
>> +dbg_td(struct c67x00_hcd *c67x00, struct c67x00_td *td, char *msg) { }
>> +
>> +#endif /* DEBUG */
>> +
>> +/* -------------------------------------------------------------------------- */
>> +/* Helper functions */
>> +
>> +static inline u16 c67x00_get_current_frame_number(struct c67x00_hcd *c67x00)
>> +{
>> + return c67x00_ll_husb_get_frame(c67x00->sie) & HOST_FRAME_MASK;
>> +}
>> +
>> +/**
>> + * frame_add
>> + * Software wraparound for framenumbers.
>> + */
>> +static inline u16 frame_add(u16 a, u16 b)
>> +{
>> + return (a + b) & HOST_FRAME_MASK;
>> +}
>> +
>> +/**
>> + * frame_after - is frame a after frame b
>> + */
>> +static inline int frame_after(u16 a, u16 b)
>> +{
>> + return ((HOST_FRAME_MASK + a - b) & HOST_FRAME_MASK) <
>> + (HOST_FRAME_MASK / 2);
>> +}
>> +
>> +/**
>> + * frame_after_eq - is frame a after or equal to frame b
>> + */
>> +static inline int frame_after_eq(u16 a, u16 b)
>> +{
>> + return ((HOST_FRAME_MASK + 1 + a - b) & HOST_FRAME_MASK) <
>> + (HOST_FRAME_MASK / 2);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/**
>> + * c67x00_release_urb - remove link from all tds to this urb
>> + * Disconnects the urb from it's tds, so that it can be given back.
>> + * pre: urb->hcpriv != NULL
>> + */
>> +static void c67x00_release_urb(struct c67x00_hcd *c67x00, struct urb *urb)
>> +{
>> + struct c67x00_td *td;
>> + struct c67x00_urb_priv *urbp;
>> +
>> + BUG_ON(!urb);
>> +
>> + c67x00->urb_count--;
>> +
>> + if (usb_pipetype(urb->pipe) == PIPE_ISOCHRONOUS) {
>> + c67x00->urb_iso_count--;
>> + if (c67x00->urb_iso_count == 0)
>> + c67x00->max_frame_bw = MAX_FRAME_BW_STD;
>> + }
>> +
>> + /* TODO this might be not so efficient when we've got many urbs!
>> + * Alternatives:
>> + * * only clear when needed
>> + * * keep a list of tds with each urbp
>> + */
>> + list_for_each_entry(td, &c67x00->td_list, td_list)
>> + if (urb == td->urb)
>> + td->urb = NULL;
>> +
>> + urbp = urb->hcpriv;
>> + urb->hcpriv = NULL;
>> + list_del(&urbp->hep_node);
>> + kfree(urbp);
>> +}
>> +
>> +/* --------------------------------------------------------------------------
>> + * This function is to get endpoint from pipe in urb struct. This will be
>> + * in higher linux version which includes endpoint in urb struct.
>> + * -------------------------------------------------------------------------- */
>> +static struct usb_host_endpoint *
>> +c67x00_get_ep(struct urb *urb)
>> +{
>> + unsigned epnum = 0;
>> + if (urb == 0)
>> + return 0;
>> + epnum = usb_pipeendpoint(urb->pipe);
>> + if (usb_pipein(urb->pipe))
>> + return urb->dev->ep_in[epnum];
>> + else
>> + return urb->dev->ep_out[epnum];
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static struct c67x00_ep_data *
>> +c67x00_ep_data_alloc(struct c67x00_hcd *c67x00, struct urb *urb)
>> +{
>> + struct usb_host_endpoint *hep = c67x00_get_ep(urb);
>> + struct c67x00_ep_data *ep_data;
>> + int type;
>> +
>> + if (hep == 0)
>> + return 0;
>> +
>> + c67x00->current_frame = c67x00_get_current_frame_number(c67x00);
>> +
>> + /* Check if endpoint already has a c67x00_ep_data struct allocated */
>> + if (hep->hcpriv) {
>> + ep_data = hep->hcpriv;
>> + if (frame_after(c67x00->current_frame, ep_data->next_frame))
>> + ep_data->next_frame =
>> + frame_add(c67x00->current_frame, 1);
>> + return hep->hcpriv;
>> + }
>> +
>> + /* Allocate and initialize a new c67x00 endpoint data structure */
>> + ep_data = kzalloc(sizeof(*ep_data), GFP_ATOMIC);
>> + if (!ep_data)
>> + return NULL;
>> +
>> + INIT_LIST_HEAD(&ep_data->queue);
>> + INIT_LIST_HEAD(&ep_data->node);
>> + ep_data->hep = hep;
>> +
>> + /* hold a reference to udev as long as this endpoint lives,
>> + * this is needed to possibly fix the data toggle */
>> + ep_data->dev = usb_get_dev(urb->dev);
>> + hep->hcpriv = ep_data;
>> +
>> + /* For ISOC and INT endpoints, start ASAP: */
>> + ep_data->next_frame = frame_add(c67x00->current_frame, 1);
>> +
>> + /* Add the endpoint data to one of the pipe lists; must be added
>> + in order of endpoint address */
>> + type = usb_pipetype(urb->pipe);
>> + if (list_empty(&ep_data->node)) {
>> + list_add(&ep_data->node, &c67x00->list[type]);
>> + } else {
>> + struct c67x00_ep_data *prev;
>> +
>> + list_for_each_entry(prev, &c67x00->list[type], node) {
>> + if (prev->hep->desc.bEndpointAddress >
>> + hep->desc.bEndpointAddress) {
>> + list_add(&ep_data->node, prev->node.prev);
>> + break;
>> + }
>> + }
>> + }
>> +
>> + return ep_data;
>> +}
>> +
>> +static int c67x00_ep_data_free(struct usb_host_endpoint *hep)
>> +{
>> + struct c67x00_ep_data *ep_data = hep->hcpriv;
>> +
>> + if (!ep_data)
>> + return 0;
>> +
>> + if (!list_empty(&ep_data->queue))
>> + return -EBUSY;
>> +
>> + usb_put_dev(ep_data->dev);
>> + list_del(&ep_data->queue);
>> + list_del(&ep_data->node);
>> +
>> + kfree(ep_data);
>> + hep->hcpriv = NULL;
>> +
>> + return 0;
>> +}
>> +
>> +void c67x00_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
>> +{
>> + struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
>> + unsigned long flags;
>> +
>> + if (!list_empty(&ep->urb_list))
>> + dev_warn(c67x00_hcd_dev(c67x00), "error: urb list not empty\n");
>> +
>> + spin_lock_irqsave(&c67x00->lock, flags);
>> +
>> + /* loop waiting for all transfers in the endpoint queue to complete */
>> + while (c67x00_ep_data_free(ep)) {
>> + /* Drop the lock so we can sleep waiting for the hardware */
>> + spin_unlock_irqrestore(&c67x00->lock, flags);
>> +
>> + /* it could happen that we reinitialize this completion, while
>> + * somebody was waiting for that completion. The timeout and
>> + * while loop handle such cases, but this might be improved */
>> + INIT_COMPLETION(c67x00->endpoint_disable);
>> + c67x00_sched_kick(c67x00);
>> + wait_for_completion_timeout(&c67x00->endpoint_disable, 1 * HZ);
>> +
>> + spin_lock_irqsave(&c67x00->lock, flags);
>> + }
>> +
>> + spin_unlock_irqrestore(&c67x00->lock, flags);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static inline int get_root_port(struct usb_device *dev)
>> +{
>> + while (dev->parent->parent)
>> + dev = dev->parent;
>> + return dev->portnum;
>> +}
>> +
>> +int c67x00_urb_enqueue(struct usb_hcd *hcd,
>> + struct usb_host_endpoint *hep,
>> + struct urb *urb, gfp_t mem_flags)
>> +{
>> + int ret;
>> + unsigned long flags;
>> + struct c67x00_urb_priv *urbp;
>> + struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
>> + int port = get_root_port(urb->dev)-1;
>> +
>> + spin_lock_irqsave(&c67x00->lock, flags);
>> +
>> + /* Make sure host controller is running */
>> + if (!HC_IS_RUNNING(hcd->state)) {
>> + ret = -ENODEV;
>> + goto err_not_linked;
>> + }
>> +
>> +// ret = usb_hcd_link_urb_to_ep(hcd, urb);
>> +// if (ret)
>> +// goto err_not_linked;
>> +
>> + /* Allocate and initialize urb private data */
>> + urbp = kzalloc(sizeof(*urbp), mem_flags);
>> + if (!urbp) {
>> + ret = -ENOMEM;
>> + goto err_urbp;
>> + }
>> +
>> + INIT_LIST_HEAD(&urbp->hep_node);
>> + urbp->urb = urb;
>> + urbp->port = port;
>> +
>> + urbp->ep_data = c67x00_ep_data_alloc(c67x00, urb);
>> +
>> + if (!urbp->ep_data) {
>> + ret = -ENOMEM;
>> + goto err_epdata;
>> + }
>> +
>> + /* TODO claim bandwidth with usb_claim_bandwidth?
>> + * also release it somewhere! */
>> +
>> + urb->hcpriv = urbp;
>> +
>> + urb->actual_length = 0; /* Nothing received/transmitted yet */
>> +
>> + switch (usb_pipetype(urb->pipe)) {
>> + case PIPE_CONTROL:
>> + urb->interval = SETUP_STAGE;
>> + break;
>> + case PIPE_INTERRUPT:
>> + break;
>> + case PIPE_BULK:
>> + break;
>> + case PIPE_ISOCHRONOUS:
>> + if (c67x00->urb_iso_count == 0)
>> + c67x00->max_frame_bw = MAX_FRAME_BW_ISO;
>> + c67x00->urb_iso_count++;
>> + /* Assume always URB_ISO_ASAP, FIXME */
>> + if (list_empty(&urbp->ep_data->queue))
>> + urb->start_frame = urbp->ep_data->next_frame;
>> + else {
>> + /* Go right after the last one */
>> + struct urb *last_urb;
>> +
>> + last_urb = list_entry(urbp->ep_data->queue.prev,
>> + struct c67x00_urb_priv,
>> + hep_node)->urb;
>> + urb->start_frame =
>> + frame_add(last_urb->start_frame,
>> + last_urb->number_of_packets *
>> + last_urb->interval);
>> + }
>> + urbp->cnt = 0;
>> + break;
>> + }
>> +
>> + /* Add the URB to the endpoint queue */
>> + list_add_tail(&urbp->hep_node, &urbp->ep_data->queue);
>> +
>> + /* If this is the only URB, kick start the controller */
>> + if (!c67x00->urb_count++)
>> + c67x00_ll_hpi_enable_sofeop(c67x00->sie);
>> +
>> + c67x00_sched_kick(c67x00);
>> + spin_unlock_irqrestore(&c67x00->lock, flags);
>> +
>> + return 0;
>> +
>> +err_epdata:
>> + kfree(urbp);
>> +err_urbp:
>> +// usb_hcd_unlink_urb_from_ep(hcd, urb);
>> + usb_hcd_giveback_urb(hcd, urb);
>> +err_not_linked:
>> + spin_unlock_irqrestore(&c67x00->lock, flags);
>> +
>> + return ret;
>> +}
>> +
>> +int c67x00_urb_dequeue(struct usb_hcd *hcd, struct urb *urb)
>> +{
>> + struct c67x00_hcd *c67x00 = hcd_to_c67x00_hcd(hcd);
>> + struct usb_host_endpoint *hep = c67x00_get_ep(urb);
>> + unsigned long flags;
>> +// int rc;
>> +
>> + spin_lock_irqsave(&c67x00->lock, flags);
>> +// rc = usb_hcd_check_unlink_urb(hcd, urb, status);
>> +// if (rc)
>> +// goto done;
>> +
>> +// hep = urb->hcpriv;
>> + /* URB already unlinked (or never linked)? */
>> + if (!hep) {
>> + goto done;
>> + }
>> +
>> + c67x00_release_urb(c67x00, urb);
>> +// usb_hcd_unlink_urb_from_ep(hcd, urb);
>> +
>> + spin_unlock(&c67x00->lock);
>> + usb_hcd_giveback_urb(hcd, urb);
>> + spin_lock(&c67x00->lock);
>> +
>> + spin_unlock_irqrestore(&c67x00->lock, flags);
>> +
>> + return 0;
>> +
>> + done:
>> + spin_unlock_irqrestore(&c67x00->lock, flags);
>> + return 0;
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/*
>> + * pre: c67x00 locked, urb unlocked
>> + */
>> +static void
>> +c67x00_giveback_urb(struct c67x00_hcd *c67x00, struct urb *urb, int status)
>> +{
>> + struct c67x00_urb_priv *urbp;
>> +
>> + if (!urb)
>> + return;
>> +
>> + urbp = urb->hcpriv;
>> + urbp->status = status;
>> +
>> + list_del_init(&urbp->hep_node);
>> +
>> + c67x00_release_urb(c67x00, urb);
>> +// usb_hcd_unlink_urb_from_ep(c67x00_hcd_to_hcd(c67x00), urb);
>> + spin_unlock(&c67x00->lock);
>> + usb_hcd_giveback_urb(c67x00_hcd_to_hcd(c67x00), urb);
>> + spin_lock(&c67x00->lock);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static int c67x00_claim_frame_bw(struct c67x00_hcd *c67x00, struct urb *urb,
>> + int len, int periodic)
>> +{
>> + struct c67x00_urb_priv *urbp = urb->hcpriv;
>> + int bit_time;
>> +
>> + /* According to the C67x00 BIOS user manual, page 3-18,19, the
>> + * following calculations provide the full speed bit times for
>> + * a transaction.
>> + *
>> + * FS(in) = 112.5 + 9.36*BC + HOST_DELAY
>> + * FS(in,iso) = 90.5 + 9.36*BC + HOST_DELAY
>> + * FS(out) = 112.5 + 9.36*BC + HOST_DELAY
>> + * FS(out,iso) = 78.4 + 9.36*BC + HOST_DELAY
>> + * LS(in) = 802.4 + 75.78*BC + HOST_DELAY
>> + * LS(out) = 802.6 + 74.67*BC + HOST_DELAY
>> + *
>> + * HOST_DELAY == 106 for the c67200 and c67300.
>> + */
>> +
>> + /* make calculations in 1/100 bit times to maintain resolution */
>> + if (urbp->ep_data->dev->speed == USB_SPEED_LOW) {
>> + /* Low speed pipe */
>> + if (usb_pipein(urb->pipe))
>> + bit_time = 80240 + 7578*len;
>> + else
>> + bit_time = 80260 + 7467*len;
>> + } else {
>> + /* FS pipes */
>> + if (usb_pipeisoc(urb->pipe))
>> + bit_time = usb_pipein(urb->pipe) ? 9050 : 7840;
>> + else
>> + bit_time = 11250;
>> + bit_time += 936*len;
>> + }
>> +
>> + /* Scale back down to integer bit times. Use a host delay of 106.
>> + * (this is the only place it is used) */
>> + bit_time = ((bit_time+50) / 100) + 106;
>> +
>> + if (unlikely(bit_time + c67x00->bandwidth_allocated >=
>> + c67x00->max_frame_bw))
>> + return -EMSGSIZE;
>> +
>> + if (unlikely(c67x00->next_td_addr + CY_TD_SIZE >=
>> + c67x00->td_base_addr + SIE_TD_SIZE))
>> + return -EMSGSIZE;
>> +
>> + if (unlikely(c67x00->next_buf_addr + len >=
>> + c67x00->buf_base_addr + SIE_TD_BUF_SIZE))
>> + return -EMSGSIZE;
>> +
>> + if (periodic) {
>> + if (unlikely(bit_time + c67x00->periodic_bw_allocated >=
>> + MAX_PERIODIC_BW(c67x00->max_frame_bw)))
>> + return -EMSGSIZE;
>> + c67x00->periodic_bw_allocated += bit_time;
>> + }
>> +
>> + c67x00->bandwidth_allocated += bit_time;
>> + return 0;
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/**
>> + * td_addr and buf_addr must be word aligned
>> + */
>> +static int c67x00_create_td(struct c67x00_hcd *c67x00, struct urb *urb,
>> + void *data, int len, int pid, int toggle,
>> + unsigned long privdata)
>> +{
>> + struct c67x00_td *td;
>> + struct c67x00_urb_priv *urbp = urb->hcpriv;
>> + const __u8 active_flag = 1, retry_cnt = 1;
>> + __u8 cmd = 0;
>> + int tt = 0;
>> +
>> + if (c67x00_claim_frame_bw(c67x00, urb, len, usb_pipeisoc(urb->pipe)
>> + || usb_pipeint(urb->pipe)))
>> + return -EMSGSIZE; /* Not really an error, but expected */
>> +
>> + td = kzalloc(sizeof(*td), GFP_ATOMIC);
>> + if (!td)
>> + return -ENOMEM;
>> +
>> + td->pipe = urb->pipe;
>> + td->ep_data = urbp->ep_data;
>> +
>> + if ((td_udev(td)->speed == USB_SPEED_LOW) &&
>> + !(c67x00->low_speed_ports & (1 << urbp->port)))
>> + cmd |= PREAMBLE_EN;
>> +
>> + switch (usb_pipetype(td->pipe)) {
>> + case PIPE_ISOCHRONOUS:
>> + tt = TT_ISOCHRONOUS;
>> + cmd |= ISO_EN;
>> + break;
>> + case PIPE_CONTROL:
>> + tt = TT_CONTROL;
>> + break;
>> + case PIPE_BULK:
>> + tt = TT_BULK;
>> + break;
>> + case PIPE_INTERRUPT:
>> + tt = TT_INTERRUPT;
>> + break;
>> + }
>> +
>> + if (toggle)
>> + cmd |= SEQ_SEL;
>> +
>> + cmd |= ARM_EN;
>> +
>> + /* SW part */
>> + td->td_addr = c67x00->next_td_addr;
>> + c67x00->next_td_addr = c67x00->next_td_addr + CY_TD_SIZE;
>> +
>> + /* HW part */
>> + td->ly_base_addr = __cpu_to_le16(c67x00->next_buf_addr);
>> + td->port_length = __cpu_to_le16((c67x00->sie->sie_num << 15) |
>> + (urbp->port << 14) | (len & 0x3FF));
>> + td->pid_ep = ((pid & 0xF) << TD_PIDEP_OFFSET) |
>> + (usb_pipeendpoint(td->pipe) & 0xF);
>> + td->dev_addr = usb_pipedevice(td->pipe) & 0x7F;
>> + td->ctrl_reg = cmd;
>> + td->status = 0;
>> + td->retry_cnt = (tt << TT_OFFSET) | (active_flag << 4) | retry_cnt;
>> + td->residue = 0;
>> + td->next_td_addr = __cpu_to_le16(c67x00->next_td_addr);
>> +
>> + /* SW part */
>> + td->data = data;
>> + td->urb = urb;
>> + td->urb->status = td->status;
>> +
>> + td->privdata = privdata;
>> +
>> + c67x00->next_buf_addr += (len + 1) & ~0x01; /* properly align */
>> +
>> + list_add_tail(&td->td_list, &c67x00->td_list);
>> + return 0;
>> +}
>> +
>> +static inline void c67x00_release_td(struct c67x00_td *td)
>> +{
>> + list_del_init(&td->td_list);
>> + kfree(td);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static int c67x00_add_data_urb(struct c67x00_hcd *c67x00, struct urb *urb)
>> +{
>> + int remaining;
>> + int toggle;
>> + int pid;
>> + int ret = 0;
>> + int maxps;
>> + int need_empty;
>> +
>> + toggle = usb_gettoggle(urb->dev, usb_pipeendpoint(urb->pipe),
>> + usb_pipeout(urb->pipe));
>> + remaining = urb->transfer_buffer_length - urb->actual_length;
>> +
>> + maxps = usb_maxpacket(urb->dev, urb->pipe, usb_pipeout(urb->pipe));
>> +
>> + need_empty = (urb->transfer_flags & URB_ZERO_PACKET) &&
>> + usb_pipeout(urb->pipe) && !(remaining % maxps);
>> +
>> + while (remaining || need_empty) {
>> + int len;
>> + char *td_buf;
>> +
>> + len = (remaining > maxps) ? maxps : remaining;
>> + if (!len)
>> + need_empty = 0;
>> +
>> + pid = usb_pipeout(urb->pipe) ? USB_PID_OUT : USB_PID_IN;
>> + td_buf = urb->transfer_buffer + urb->transfer_buffer_length -
>> + remaining;
>> + ret = c67x00_create_td(c67x00, urb, td_buf, len, pid, toggle,
>> + DATA_STAGE);
>> + if (ret)
>> + return ret; /* td wasn't created */
>> +
>> + toggle ^= 1;
>> + remaining -= len;
>> + if (usb_pipecontrol(urb->pipe))
>> + break;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +/**
>> + * return 0 in case more bandwidth is available, else errorcode
>> + */
>> +static int c67x00_add_ctrl_urb(struct c67x00_hcd *c67x00, struct urb *urb)
>> +{
>> + int ret;
>> + int pid;
>> +
>> + switch (urb->interval) {
>> + default:
>> + case SETUP_STAGE:
>> + ret = c67x00_create_td(c67x00, urb, urb->setup_packet,
>> + 8, USB_PID_SETUP, 0, SETUP_STAGE);
>> + if (ret)
>> + return ret;
>> + urb->interval = SETUP_STAGE;
>> + usb_settoggle(urb->dev, usb_pipeendpoint(urb->pipe),
>> + usb_pipeout(urb->pipe), 1);
>> + break;
>> + case DATA_STAGE:
>> + if (urb->transfer_buffer_length) {
>> + ret = c67x00_add_data_urb(c67x00, urb);
>> + if (ret)
>> + return ret;
>> + break;
>> + } /* else fallthrough */
>> + case STATUS_STAGE:
>> + pid = !usb_pipeout(urb->pipe) ? USB_PID_OUT : USB_PID_IN;
>> + ret = c67x00_create_td(c67x00, urb, NULL, 0, pid, 1,
>> + STATUS_STAGE);
>> + if (ret)
>> + return ret;
>> + break;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +/*
>> + * return 0 in case more bandwidth is available, else errorcode
>> + */
>> +static int c67x00_add_int_urb(struct c67x00_hcd *c67x00, struct urb *urb)
>> +{
>> + struct c67x00_urb_priv *urbp = urb->hcpriv;
>> +
>> + if (frame_after_eq(c67x00->current_frame, urbp->ep_data->next_frame)) {
>> + urbp->ep_data->next_frame =
>> + frame_add(urbp->ep_data->next_frame, urb->interval);
>> + return c67x00_add_data_urb(c67x00, urb);
>> + }
>> + return 0;
>> +}
>> +
>> +static int c67x00_add_iso_urb(struct c67x00_hcd *c67x00, struct urb *urb)
>> +{
>> + struct c67x00_urb_priv *urbp = urb->hcpriv;
>> +
>> + if (frame_after_eq(c67x00->current_frame, urbp->ep_data->next_frame)) {
>> + char *td_buf;
>> + int len, pid, ret;
>> +
>> + BUG_ON(urbp->cnt >= urb->number_of_packets);
>> +
>> + td_buf = urb->transfer_buffer +
>> + urb->iso_frame_desc[urbp->cnt].offset;
>> + len = urb->iso_frame_desc[urbp->cnt].length;
>> + pid = usb_pipeout(urb->pipe) ? USB_PID_OUT : USB_PID_IN;
>> +
>> + ret = c67x00_create_td(c67x00, urb, td_buf, len, pid, 0,
>> + urbp->cnt);
>> + if (ret) {
>> + printk(KERN_DEBUG "create failed: %d\n", ret);
>> + urb->iso_frame_desc[urbp->cnt].actual_length = 0;
>> + urb->iso_frame_desc[urbp->cnt].status = ret;
>> + if (urbp->cnt + 1 == urb->number_of_packets)
>> + c67x00_giveback_urb(c67x00, urb, 0);
>> + }
>> +
>> + urbp->ep_data->next_frame =
>> + frame_add(urbp->ep_data->next_frame, urb->interval);
>> + urbp->cnt++;
>> + }
>> + return 0;
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static void c67x00_fill_from_list(struct c67x00_hcd *c67x00, int type,
>> + int (*add)(struct c67x00_hcd *, struct urb *))
>> +{
>> + struct c67x00_ep_data *ep_data;
>> + struct urb *urb;
>> +
>> + /* traverse every endpoint on the list */
>> + list_for_each_entry(ep_data, &c67x00->list[type], node) {
>> + if (!list_empty(&ep_data->queue)) {
>> + /* and add the first urb */
>> + /* isochronous transfer rely on this */
>> + urb = list_entry(ep_data->queue.next,
>> + struct c67x00_urb_priv,
>> + hep_node)->urb;
>> + add(c67x00, urb);
>> + }
>> + }
>> +}
>> +
>> +static void c67x00_fill_frame(struct c67x00_hcd *c67x00)
>> +{
>> + struct c67x00_td *td, *ttd;
>> +
>> + /* Check if we can proceed */
>> + if (!list_empty(&c67x00->td_list)) {
>> + dev_warn(c67x00_hcd_dev(c67x00),
>> + "TD list not empty! This should not happen!\n");
>> + list_for_each_entry_safe(td, ttd, &c67x00->td_list, td_list) {
>> + dbg_td(c67x00, td, "Unprocessed td");
>> + c67x00_release_td(td);
>> + }
>> + }
>> +
>> + /* Reinitialize variables */
>> + c67x00->bandwidth_allocated = 0;
>> + c67x00->periodic_bw_allocated = 0;
>> +
>> + c67x00->next_td_addr = c67x00->td_base_addr;
>> + c67x00->next_buf_addr = c67x00->buf_base_addr;
>> +
>> + /* Fill the list */
>> + c67x00_fill_from_list(c67x00, PIPE_ISOCHRONOUS, c67x00_add_iso_urb);
>> + c67x00_fill_from_list(c67x00, PIPE_INTERRUPT, c67x00_add_int_urb);
>> + c67x00_fill_from_list(c67x00, PIPE_CONTROL, c67x00_add_ctrl_urb);
>> + c67x00_fill_from_list(c67x00, PIPE_BULK, c67x00_add_data_urb);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/**
>> + * Get TD from C67X00
>> + */
>> +static inline void
>> +c67x00_parse_td(struct c67x00_hcd *c67x00, struct c67x00_td *td)
>> +{
>> + c67x00_ll_read_mem_le16(c67x00->sie->dev,
>> + td->td_addr, td, CY_TD_SIZE);
>> +
>> + if (usb_pipein(td->pipe) && td_actual_bytes(td))
>> + c67x00_ll_read_mem_le16(c67x00->sie->dev, td_ly_base_addr(td),
>> + td->data, td_actual_bytes(td));
>> +}
>> +
>> +static int c67x00_td_to_error(struct c67x00_hcd *c67x00, struct c67x00_td *td)
>> +{
>> + if (td->status & TD_STATUSMASK_ERR) {
>> + dbg_td(c67x00, td, "ERROR_FLAG");
>> + return -EILSEQ;
>> + }
>> + if (td->status & TD_STATUSMASK_STALL) {
>> + /* dbg_td(c67x00, td, "STALL"); */
>> + return -EPIPE;
>> + }
>> + if (td->status & TD_STATUSMASK_TMOUT) {
>> + dbg_td(c67x00, td, "TIMEOUT");
>> + return -ETIMEDOUT;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> +static inline int c67x00_end_of_data(struct c67x00_td *td)
>> +{
>> + int maxps, need_empty, remaining;
>> + struct urb *urb = td->urb;
>> + int act_bytes;
>> +
>> + act_bytes = td_actual_bytes(td);
>> +
>> + if (unlikely(!act_bytes))
>> + return 1; /* This was an empty packet */
>> +
>> + maxps = usb_maxpacket(td_udev(td), td->pipe, usb_pipeout(td->pipe));
>> +
>> + if (unlikely(act_bytes < maxps))
>> + return 1; /* Smaller then full packet */
>> +
>> + remaining = urb->transfer_buffer_length - urb->actual_length;
>> + need_empty = (urb->transfer_flags & URB_ZERO_PACKET) &&
>> + usb_pipeout(urb->pipe) && !(remaining % maxps);
>> +
>> + if (unlikely(!remaining && !need_empty))
>> + return 1;
>> +
>> + return 0;
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/* Remove all td's from the list which come
>> + * after last_td and are meant for the same pipe.
>> + * This is used when a short packet has occured */
>> +static inline void c67x00_clear_pipe(struct c67x00_hcd *c67x00,
>> + struct c67x00_td *last_td)
>> +{
>> + struct c67x00_td *td, *tmp;
>> + td = last_td;
>> + tmp = last_td;
>> + while (td->td_list.next != &c67x00->td_list) {
>> + td = list_entry(td->td_list.next, struct c67x00_td, td_list);
>> + if (td->pipe == last_td->pipe) {
>> + c67x00_release_td(td);
>> + td = tmp;
>> + }
>> + tmp = td;
>> + }
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static void c67x00_handle_successful_td(struct c67x00_hcd *c67x00,
>> + struct c67x00_td *td)
>> +{
>> + struct urb *urb = td->urb;
>> +
>> + if (!urb)
>> + return;
>> +
>> + urb->actual_length += td_actual_bytes(td);
>> +
>> + switch (usb_pipetype(td->pipe)) {
>> + /* isochronous tds are handled separately */
>> + case PIPE_CONTROL:
>> + switch (td->privdata) {
>> + case SETUP_STAGE:
>> + urb->interval =
>> + urb->transfer_buffer_length ?
>> + DATA_STAGE : STATUS_STAGE;
>> + /* Don't count setup_packet with normal data: */
>> + urb->actual_length = 0;
>> + break;
>> +
>> + case DATA_STAGE:
>> + if (c67x00_end_of_data(td)) {
>> + urb->interval = STATUS_STAGE;
>> + c67x00_clear_pipe(c67x00, td);
>> + }
>> + break;
>> +
>> + case STATUS_STAGE:
>> + urb->interval = 0;
>> + c67x00_giveback_urb(c67x00, urb, 0);
>> + break;
>> + }
>> + break;
>> +
>> + case PIPE_INTERRUPT:
>> + case PIPE_BULK:
>> + if (unlikely(c67x00_end_of_data(td))) {
>> + c67x00_clear_pipe(c67x00, td);
>> + c67x00_giveback_urb(c67x00, urb, 0);
>> + }
>> + break;
>> + }
>> +}
>> +
>> +static void c67x00_handle_isoc(struct c67x00_hcd *c67x00, struct c67x00_td *td)
>> +{
>> + struct urb *urb = td->urb;
>> + struct c67x00_urb_priv *urbp;
>> + int cnt;
>> +
>> + if (!urb)
>> + return;
>> +
>> + urbp = urb->hcpriv;
>> + cnt = td->privdata;
>> +
>> + if (td->status & TD_ERROR_MASK)
>> + urb->error_count++;
>> +
>> + urb->iso_frame_desc[cnt].actual_length = td_actual_bytes(td);
>> + urb->iso_frame_desc[cnt].status = c67x00_td_to_error(c67x00, td);
>> + if (cnt + 1 == urb->number_of_packets) /* Last packet */
>> + c67x00_giveback_urb(c67x00, urb, 0);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/**
>> + * c67x00_check_td_list - handle tds which have been processed by the c67x00
>> + * pre: current_td == 0
>> + */
>> +static inline void c67x00_check_td_list(struct c67x00_hcd *c67x00)
>> +{
>> + struct c67x00_td *td, *tmp;
>> + struct urb *urb;
>> + int ack_ok;
>> + int clear_endpoint;
>> +
>> + list_for_each_entry_safe(td, tmp, &c67x00->td_list, td_list) {
>> + /* get the TD */
>> + c67x00_parse_td(c67x00, td);
>> + urb = td->urb; /* urb can be NULL! */
>> + ack_ok = 0;
>> + clear_endpoint = 1;
>> +
>> + /* Handle isochronous transfers separately */
>> + if (usb_pipeisoc(td->pipe)) {
>> + clear_endpoint = 0;
>> + c67x00_handle_isoc(c67x00, td);
>> + goto cont;
>> + }
>> +
>> + /* When an error occurs, all td's for that pipe go into an
>> + * inactive state. This state matches successful transfers so
>> + * we must make sure not to service them. */
>> + if (td->status & TD_ERROR_MASK) {
>> + c67x00_giveback_urb(c67x00, urb,
>> + c67x00_td_to_error(c67x00, td));
>> + goto cont;
>> + }
>> +
>> + if ((td->status & TD_STATUSMASK_NAK) || !td_sequence_ok(td) ||
>> + !td_acked(td))
>> + goto cont;
>> +
>> + /* Sequence ok and acked, don't need to fix toggle */
>> + ack_ok = 1;
>> +
>> + if (unlikely(td->status & TD_STATUSMASK_OVF)) {
>> + if (td_residue(td) & TD_RESIDUE_OVERFLOW) {
>> + /* Overflow */
>> + c67x00_giveback_urb(c67x00, urb, -EOVERFLOW);
>> + goto cont;
>> + }
>> + }
>> +
>> + clear_endpoint = 0;
>> +// dbg_td(c67x00, td, "SUCCESSFUL");
>> + c67x00_handle_successful_td(c67x00, td);
>> +
>> +cont:
>> + if (clear_endpoint)
>> + c67x00_clear_pipe(c67x00, td);
>> + if (ack_ok)
>> + usb_settoggle(td_udev(td), usb_pipeendpoint(td->pipe),
>> + usb_pipeout(td->pipe),
>> + !(td->ctrl_reg & SEQ_SEL));
>> + /* next in list could have been removed, due to clear_pipe! */
>> + tmp = list_entry(td->td_list.next, typeof(*td), td_list);
>> + c67x00_release_td(td);
>> + }
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static inline int c67x00_all_tds_processed(struct c67x00_hcd *c67x00)
>> +{
>> + /* If all tds are processed, we can check the previous frame (if
>> + * there was any) and start our next frame.
>> + */
>> + return !c67x00_ll_husb_get_current_td(c67x00->sie);
>> +}
>> +
>> +/**
>> + * Send td to C67X00
>> + */
>> +static void c67x00_send_td(struct c67x00_hcd *c67x00, struct c67x00_td *td)
>> +{
>> + int len = td_length(td);
>> +
>> + if (len && ((td->pid_ep & TD_PIDEPMASK_PID) != TD_PID_IN))
>> + c67x00_ll_write_mem_le16(c67x00->sie->dev, td_ly_base_addr(td),
>> + td->data, len);
>> +
>> + c67x00_ll_write_mem_le16(c67x00->sie->dev,
>> + td->td_addr, td, CY_TD_SIZE);
>> +}
>> +
>> +static void c67x00_send_frame(struct c67x00_hcd *c67x00)
>> +{
>> + struct c67x00_td *td;
>> +
>> + if (list_empty(&c67x00->td_list))
>> + dev_warn(c67x00_hcd_dev(c67x00),
>> + "%s: td list should not be empty here!\n",
>> + __func__);
>> +
>> + list_for_each_entry(td, &c67x00->td_list, td_list) {
>> + if (td->td_list.next == &c67x00->td_list)
>> + td->next_td_addr = 0; /* Last td in list */
>> +
>> + c67x00_send_td(c67x00, td);
>> + }
>> +
>> + c67x00_ll_husb_set_current_td(c67x00->sie, c67x00->td_base_addr);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +/**
>> + * c67x00_do_work - Schedulers state machine
>> + */
>> +static void c67x00_do_work(struct c67x00_hcd *c67x00)
>> +{
>> + spin_lock(&c67x00->lock);
>> + /* Make sure all tds are processed */
>> + if (!c67x00_all_tds_processed(c67x00))
>> + goto out;
>> +
>> + c67x00_check_td_list(c67x00);
>> +
>> + /* no td's are being processed (current == 0)
>> + * and all have been "checked" */
>> + complete(&c67x00->endpoint_disable);
>> +
>> + if (!list_empty(&c67x00->td_list))
>> + goto out;
>> +
>> + c67x00->current_frame = c67x00_get_current_frame_number(c67x00);
>> + if (c67x00->current_frame == c67x00->last_frame)
>> + goto out; /* Don't send tds in same frame */
>> + c67x00->last_frame = c67x00->current_frame;
>> +
>> + /* If no urbs are scheduled, our work is done */
>> + if (!c67x00->urb_count) {
>> + c67x00_ll_hpi_disable_sofeop(c67x00->sie);
>> + goto out;
>> + }
>> +
>> + c67x00_fill_frame(c67x00);
>> + if (!list_empty(&c67x00->td_list))
>> + /* TD's have been added to the frame */
>> + c67x00_send_frame(c67x00);
>> +
>> + out:
>> + spin_unlock(&c67x00->lock);
>> +}
>> +
>> +/* -------------------------------------------------------------------------- */
>> +
>> +static void c67x00_sched_tasklet(unsigned long __c67x00)
>> +{
>> + struct c67x00_hcd *c67x00 = (struct c67x00_hcd *)__c67x00;
>> + c67x00_do_work(c67x00);
>> +}
>> +
>> +void c67x00_sched_kick(struct c67x00_hcd *c67x00)
>> +{
>> + tasklet_hi_schedule(&c67x00->tasklet);
>> +}
>> +
>> +int c67x00_sched_start_scheduler(struct c67x00_hcd *c67x00)
>> +{
>> + tasklet_init(&c67x00->tasklet, c67x00_sched_tasklet,
>> + (unsigned long)c67x00);
>> + return 0;
>> +}
>> +
>> +void c67x00_sched_stop_scheduler(struct c67x00_hcd *c67x00)
>> +{
>> + tasklet_kill(&c67x00->tasklet);
>> +}
>> Index: software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00.h
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00.h (revision 0)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/c67x00/c67x00.h (revision 0)
>> @@ -0,0 +1,294 @@
>> +/*
>> + * c67x00.h: Cypress C67X00 USB register and field definitions
>> + *
>> + * Copyright (C) 2006-2008 Barco N.V.
>> + * Derived from the Cypress cy7c67200/300 ezusb linux driver and
>> + * based on multiple host controller drivers inside the linux kernel.
>> + *
>> + * 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., 51 Franklin Street, Fifth Floor, Boston,
>> + * MA 02110-1301 USA.
>> + */
>> +
>> +#ifndef _USB_C67X00_H
>> +#define _USB_C67X00_H
>> +
>> +#include <linux/spinlock.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/completion.h>
>> +#include <linux/mutex.h>
>> +
>> +/* ---------------------------------------------------------------------
>> + * Cypress C67x00 register definitions
>> + */
>> +
>> +/* Hardware Revision Register */
>> +#define HW_REV_REG 0xC004
>> +
>> +/* General USB registers */
>> +/* ===================== */
>> +
>> +/* USB Control Register */
>> +#define USB_CTL_REG(x) ((x) ? 0xC0AA : 0xC08A)
>> +
>> +#define LOW_SPEED_PORT(x) ((x) ? 0x0800 : 0x0400)
>> +#define HOST_MODE 0x0200
>> +#define PORT_RES_EN(x) ((x) ? 0x0100 : 0x0080)
>> +#define SOF_EOP_EN(x) ((x) ? 0x0002 : 0x0001)
>> +
>> +/* USB status register - Notice it has different content in hcd/udc mode */
>> +#define USB_STAT_REG(x) ((x) ? 0xC0B0 : 0xC090)
>> +
>> +#define EP0_IRQ_FLG 0x0001
>> +#define EP1_IRQ_FLG 0x0002
>> +#define EP2_IRQ_FLG 0x0004
>> +#define EP3_IRQ_FLG 0x0008
>> +#define EP4_IRQ_FLG 0x0010
>> +#define EP5_IRQ_FLG 0x0020
>> +#define EP6_IRQ_FLG 0x0040
>> +#define EP7_IRQ_FLG 0x0080
>> +#define RESET_IRQ_FLG 0x0100
>> +#define SOF_EOP_IRQ_FLG 0x0200
>> +#define ID_IRQ_FLG 0x4000
>> +#define VBUS_IRQ_FLG 0x8000
>> +
>> +/* USB Host only registers */
>> +/* ======================= */
>> +
>> +/* Host n Control Register */
>> +#define HOST_CTL_REG(x) ((x) ? 0xC0A0 : 0xC080)
>> +
>> +#define PREAMBLE_EN 0x0080 /* Preamble enable */
>> +#define SEQ_SEL 0x0040 /* Data Toggle Sequence Bit Select */
>> +#define ISO_EN 0x0010 /* Isochronous enable */
>> +#define ARM_EN 0x0001 /* Arm operation */
>> +
>> +/* Host n Interrupt Enable Register */
>> +#define HOST_IRQ_EN_REG(x) ((x) ? 0xC0AC : 0xC08C)
>> +
>> +#define SOF_EOP_IRQ_EN 0x0200 /* SOF/EOP Interrupt Enable */
>> +#define SOF_EOP_TMOUT_IRQ_EN 0x0800 /* SOF/EOP Timeout Interrupt Enable */
>> +#define ID_IRQ_EN 0x4000 /* ID interrupt enable */
>> +#define VBUS_IRQ_EN 0x8000 /* VBUS interrupt enable */
>> +#define DONE_IRQ_EN 0x0001 /* Done Interrupt Enable */
>> +
>> +/* USB status register */
>> +#define HOST_STAT_MASK 0x02FD
>> +#define PORT_CONNECT_CHANGE(x) ((x) ? 0x0020 : 0x0010)
>> +#define PORT_SE0_STATUS(x) ((x) ? 0x0008 : 0x0004)
>> +
>> +/* Host Frame Register */
>> +#define HOST_FRAME_REG(x) ((x) ? 0xC0B6 : 0xC096)
>> +
>> +#define HOST_FRAME_MASK 0x07FF
>> +
>> +/* USB Peripheral only registers */
>> +/* ============================= */
>> +
>> +/* Device n Port Sel reg */
>> +#define DEVICE_N_PORT_SEL(x) ((x) ? 0xC0A4 : 0xC084)
>> +
>> +/* Device n Interrupt Enable Register */
>> +#define DEVICE_N_IRQ_EN_REG(x) ((x) ? 0xC0AC : 0xC08C)
>> +
>> +#define DEVICE_N_ENDPOINT_N_CTL_REG(dev, ep) ((dev) \
>> + ? (0x0280 + (ep << 4)) \
>> + : (0x0200 + (ep << 4)))
>> +#define DEVICE_N_ENDPOINT_N_STAT_REG(dev, ep) ((dev) \
>> + ? (0x0286 + (ep << 4)) \
>> + : (0x0206 + (ep << 4)))
>> +
>> +#define DEVICE_N_ADDRESS(dev) ((dev) ? (0xC0AE) : (0xC08E))
>> +
>> +/* HPI registers */
>> +/* ============= */
>> +
>> +/* HPI Status register */
>> +#define SOFEOP_FLG(x) (1 << ((x) ? 12 : 10))
>> +#define SIEMSG_FLG(x) (1 << (4 + (x)))
>> +#define RESET_FLG(x) ((x) ? 0x0200 : 0x0002)
>> +#define DONE_FLG(x) (1 << (2 + (x)))
>> +#define RESUME_FLG(x) (1 << (6 + (x)))
>> +#define MBX_OUT_FLG 0x0001 /* Message out available */
>> +#define MBX_IN_FLG 0x0100
>> +#define ID_FLG 0x4000
>> +#define VBUS_FLG 0x8000
>> +
>> +/* Interrupt routing register */
>> +#define HPI_IRQ_ROUTING_REG 0x0142
>> +
>> +#define HPI_SWAP_ENABLE(x) ((x) ? 0x0100 : 0x0001)
>> +#define RESET_TO_HPI_ENABLE(x) ((x) ? 0x0200 : 0x0002)
>> +#define DONE_TO_HPI_ENABLE(x) ((x) ? 0x0008 : 0x0004)
>> +#define RESUME_TO_HPI_ENABLE(x) ((x) ? 0x0080 : 0x0040)
>> +#define SOFEOP_TO_HPI_EN(x) ((x) ? 0x2000 : 0x0800)
>> +#define SOFEOP_TO_CPU_EN(x) ((x) ? 0x1000 : 0x0400)
>> +#define ID_TO_HPI_ENABLE 0x4000
>> +#define VBUS_TO_HPI_ENABLE 0x8000
>> +
>> +/* SIE msg registers */
>> +#define SIEMSG_REG(x) ((x) ? 0x0148 : 0x0144)
>> +
>> +#define HUSB_TDListDone 0x1000
>> +
>> +#define SUSB_EP0_MSG 0x0001
>> +#define SUSB_EP1_MSG 0x0002
>> +#define SUSB_EP2_MSG 0x0004
>> +#define SUSB_EP3_MSG 0x0008
>> +#define SUSB_EP4_MSG 0x0010
>> +#define SUSB_EP5_MSG 0x0020
>> +#define SUSB_EP6_MSG 0x0040
>> +#define SUSB_EP7_MSG 0x0080
>> +#define SUSB_RST_MSG 0x0100
>> +#define SUSB_SOF_MSG 0x0200
>> +#define SUSB_CFG_MSG 0x0400
>> +#define SUSB_SUS_MSG 0x0800
>> +#define SUSB_ID_MSG 0x4000
>> +#define SUSB_VBUS_MSG 0x8000
>> +
>> +/* BIOS interrupt routines */
>> +
>> +#define SUSBx_RECEIVE_INT(x) ((x) ? 97 : 81)
>> +#define SUSBx_SEND_INT(x) ((x) ? 96 : 80)
>> +
>> +#define SUSBx_DEV_DESC_VEC(x) ((x) ? 0x00D4 : 0x00B4)
>> +#define SUSBx_CONF_DESC_VEC(x) ((x) ? 0x00D6 : 0x00B6)
>> +#define SUSBx_STRING_DESC_VEC(x) ((x) ? 0x00D8 : 0x00B8)
>> +
>> +#define CY_HCD_BUF_ADDR 0x500 /* Base address for host */
>> +#define SIE_TD_SIZE 0x200 /* size of the td list */
>> +#define SIE_TD_BUF_SIZE 0x400 /* size of the data buffer */
>> +
>> +#define SIE_TD_OFFSET(host) ((host) ? (SIE_TD_SIZE+SIE_TD_BUF_SIZE) : 0)
>> +#define SIE_BUF_OFFSET(host) (SIE_TD_OFFSET(host) + SIE_TD_SIZE)
>> +
>> +/* Base address of HCD + 2 x TD_SIZE + 2 x TD_BUF_SIZE */
>> +#define CY_UDC_REQ_HEADER_BASE 0x1100
>> +/* 8- byte request headers for IN/OUT transfers */
>> +#define CY_UDC_REQ_HEADER_SIZE 8
>> +
>> +#define CY_UDC_REQ_HEADER_ADDR(ep_num) (CY_UDC_REQ_HEADER_BASE + \
>> + ((ep_num) * CY_UDC_REQ_HEADER_SIZE))
>> +#define CY_UDC_DESC_BASE_ADDRESS (CY_UDC_REQ_HEADER_ADDR(8))
>> +
>> +#define CY_UDC_BIOS_REPLACE_BASE 0x1800
>> +#define CY_UDC_REQ_BUFFER_BASE 0x2000
>> +#define CY_UDC_REQ_BUFFER_SIZE 0x0400
>> +#define CY_UDC_REQ_BUFFER_ADDR(ep_num) (CY_UDC_REQ_BUFFER_BASE + \
>> + ((ep_num) * CY_UDC_REQ_BUFFER_SIZE))
>> +
>> +/* ---------------------------------------------------------------------
>> + * Driver data structures
>> + */
>> +
>> +struct c67x00_device;
>> +
>> +/**
>> + * struct c67x00_sie - Common data associated with a SIE
>> + * @lock: lock to protect this struct and the associated chip registers
>> + * @private_data: subdriver dependent data
>> + * @irq: subdriver dependent irq handler, set NULL when not used
>> + * @dev: link to common driver structure
>> + * @sie_num: SIE number on chip, starting from 0
>> + * @mode: SIE mode (host/peripheral/otg/not used)
>> + */
>> +struct c67x00_sie {
>> + /* Entries to be used by the subdrivers */
>> + spinlock_t lock; /* protect this structure */
>> + void *private_data;
>> + void (*irq) (struct c67x00_sie *sie, u16 int_status, u16 msg);
>> +
>> + /* Read only: */
>> + struct c67x00_device *dev;
>> + int sie_num;
>> + int mode;
>> +};
>> +
>> +#define sie_dev(s) (&(s)->dev->pdev->dev)
>> +
>> +/**
>> + * struct c67x00_lcp
>> + */
>> +struct c67x00_lcp {
>> + /* Internal use only */
>> + struct mutex mutex;
>> + struct completion msg_received;
>> + u16 last_msg;
>> +};
>> +
>> +/*
>> + * struct c67x00_hpi
>> + */
>> +struct c67x00_hpi {
>> + void __iomem *base;
>> + int regstep;
>> + spinlock_t lock;
>> + struct c67x00_lcp lcp;
>> +};
>> +
>> +#define C67X00_SIES 2
>> +#define C67X00_PORTS 2
>> +
>> +/**
>> + * struct c67x00_device - Common data associated with a c67x00 instance
>> + * @hpi: hpi addresses
>> + * @sie: array of sie's on this chip
>> + * @pdev: platform device of instance
>> + * @pdata: configuration provided by the platform
>> + */
>> +struct c67x00_device {
>> + struct c67x00_hpi hpi;
>> + struct c67x00_sie sie[C67X00_SIES];
>> + struct platform_device *pdev;
>> + struct c67x00_platform_data *pdata;
>> +};
>> +
>> +/* ---------------------------------------------------------------------
>> + * Low level interface functions
>> + */
>> +
>> +/* Host Port Interface (HPI) functions */
>> +u16 c67x00_ll_hpi_status(struct c67x00_device *dev);
>> +void c67x00_ll_hpi_reg_init(struct c67x00_device *dev);
>> +void c67x00_ll_hpi_enable_sofeop(struct c67x00_sie *sie);
>> +void c67x00_ll_hpi_disable_sofeop(struct c67x00_sie *sie);
>> +
>> +/* General functions */
>> +u16 c67x00_ll_fetch_siemsg(struct c67x00_device *dev, int sie_num);
>> +u16 c67x00_ll_get_usb_ctl(struct c67x00_sie *sie);
>> +void c67x00_ll_usb_clear_status(struct c67x00_sie *sie, u16 bits);
>> +u16 c67x00_ll_usb_get_status(struct c67x00_sie *sie);
>> +void c67x00_ll_write_mem_le16(struct c67x00_device *dev, u16 addr,
>> + void *data, int len);
>> +void c67x00_ll_read_mem_le16(struct c67x00_device *dev, u16 addr,
>> + void *data, int len);
>> +
>> +/* Host specific functions */
>> +void c67x00_ll_set_husb_eot(struct c67x00_device *dev, u16 value);
>> +void c67x00_ll_husb_reset(struct c67x00_sie *sie, int port);
>> +void c67x00_ll_husb_set_current_td(struct c67x00_sie *sie, u16 addr);
>> +u16 c67x00_ll_husb_get_current_td(struct c67x00_sie *sie);
>> +u16 c67x00_ll_husb_get_frame(struct c67x00_sie *sie);
>> +void c67x00_ll_husb_init_host_port(struct c67x00_sie *sie);
>> +void c67x00_ll_husb_reset_port(struct c67x00_sie *sie, int port);
>> +
>> +/* Called by c67x00_irq to handle lcp interrupts */
>> +void c67x00_ll_irq(struct c67x00_device *dev, u16 int_status);
>> +
>> +/* Setup and teardown */
>> +void c67x00_ll_init(struct c67x00_device *dev);
>> +void c67x00_ll_release(struct c67x00_device *dev);
>> +int c67x00_ll_reset(struct c67x00_device *dev);
>> +
>> +#endif /* _USB_C67X00_H */
>> Index: software/linux-2.6.x-petalogix/drivers/usb/c67x00/Makefile
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/c67x00/Makefile (revision 0)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/c67x00/Makefile (revision 0)
>> @@ -0,0 +1,9 @@
>> +#
>> +# Makefile for Cypress C67X00 USB Controller
>> +#
>> +
>> +ccflags-$(CONFIG_USB_DEBUG) += -DDEBUG
>> +
>> +obj-$(CONFIG_USB_C67X00_HCD) += c67x00.o
>> +
>> +c67x00-objs := c67x00-drv.o c67x00-ll-hpi.o c67x00-hcd.o c67x00-sched.o
>> Index: software/linux-2.6.x-petalogix/drivers/usb/host/Kconfig
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/host/Kconfig (revision 5469)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/host/Kconfig (working copy)
>> @@ -4,6 +4,20 @@
>> comment "USB Host Controller Drivers"
>> depends on USB
>>
>> +config USB_C67X00_HCD
>> + tristate "Cypress C67x00 HCD support"
>> + depends on USB
>> + help
>> + The Cypress C67x00 (EZ-Host/EZ-OTG) chips are dual-role
>> + host/peripheral/OTG USB controllers.
>> +
>> + Enable this option to support this chip in host controller mode.
>> + If unsure, say N.
>> +
>> + To compile this driver as a module, choose M here: the
>> + module will be called c67x00.
>> +
>> +
>> config USB_EHCI_HCD
>> tristate "EHCI HCD (USB 2.0) support"
>> depends on USB && USB_ARCH_HAS_EHCI
>> Index: software/linux-2.6.x-petalogix/drivers/usb/Makefile
>> ===================================================================
>> --- software/linux-2.6.x-petalogix/drivers/usb/Makefile (revision 5469)
>> +++ software/linux-2.6.x-petalogix/drivers/usb/Makefile (working copy)
>> @@ -18,6 +18,8 @@
>> obj-$(CONFIG_ETRAX_USB_HOST) += host/
>> obj-$(CONFIG_USB_OHCI_AT91) += host/
>>
>> +obj-$(CONFIG_USB_C67X00_HCD) += c67x00/
>> +
>> obj-$(CONFIG_USB_ACM) += class/
>> obj-$(CONFIG_USB_PRINTER) += class/
>>
>
>
> --
> Dr. Johann Pfefferl ------------ mailto j.pfefferl at eubus dot net
> Eubus GmbH http://www.eubus.net ++++ http://www.ebmhydraxc.com
> Gollierstr. 70
> D-80339 Muenchen
> Phone: +49 (0)89 45 22 578-67 Fax: +49 (0)89 45 22 578-55
> Registergericht Muenchen HRB 145 336, Ust-Id Nr. DE 225 783 933
> Geschaeftsfuehrer: Volker Ulrich
> ==
> -o) A computer program does what you tell it to do,
> /\\ not what you want it to do.
> _\_v-
>
> ___________________________
> microblaze-uclinux mailing list
> microblaze-uclinux@xxxxxxxxxxxxxx
> Project Home Page : http://www.itee.uq.edu.au/~jwilliams/mblaze-uclinux
> Mailing List Archive : http://www.itee.uq.edu.au/~listarch/microblaze-uclinux/
>
>
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