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-rw-r--r--drivers/usb/gadget/Kconfig43
-rw-r--r--drivers/usb/gadget/Makefile2
-rw-r--r--drivers/usb/gadget/at91_udc.c2
-rw-r--r--drivers/usb/gadget/atmel_usba_udc.c2
-rw-r--r--drivers/usb/gadget/ci13xxx_udc.c2830
-rw-r--r--drivers/usb/gadget/ci13xxx_udc.h195
-rw-r--r--drivers/usb/gadget/epautoconf.c2
-rw-r--r--drivers/usb/gadget/file_storage.c177
-rw-r--r--drivers/usb/gadget/fsl_qe_udc.c14
-rw-r--r--drivers/usb/gadget/gadget_chips.h8
-rw-r--r--drivers/usb/gadget/goku_udc.c2
-rw-r--r--drivers/usb/gadget/imx_udc.c1516
-rw-r--r--drivers/usb/gadget/imx_udc.h344
-rw-r--r--drivers/usb/gadget/lh7a40x_udc.c2
-rw-r--r--drivers/usb/gadget/m66592-udc.c9
-rw-r--r--drivers/usb/gadget/net2280.c2
-rw-r--r--drivers/usb/gadget/omap_udc.c4
-rw-r--r--drivers/usb/gadget/pxa25x_udc.c4
-rw-r--r--drivers/usb/gadget/pxa27x_udc.c4
-rw-r--r--drivers/usb/gadget/s3c2410_udc.c36
20 files changed, 5137 insertions, 61 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index dd4cd5a51370..3219d137340a 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -297,13 +297,34 @@ config USB_S3C2410_DEBUG
# musb builds in ../musb along with host support
config USB_GADGET_MUSB_HDRC
- boolean "Inventra HDRC USB Peripheral (TI, ...)"
+ boolean "Inventra HDRC USB Peripheral (TI, ADI, ...)"
depends on USB_MUSB_HDRC && (USB_MUSB_PERIPHERAL || USB_MUSB_OTG)
select USB_GADGET_DUALSPEED
select USB_GADGET_SELECTED
help
This OTG-capable silicon IP is used in dual designs including
- the TI DaVinci, OMAP 243x, OMAP 343x, and TUSB 6010.
+ the TI DaVinci, OMAP 243x, OMAP 343x, TUSB 6010, and ADI Blackfin
+
+config USB_GADGET_IMX
+ boolean "Freescale IMX USB Peripheral Controller"
+ depends on ARCH_MX1
+ help
+ Freescale's IMX series include an integrated full speed
+ USB 1.1 device controller. The controller in the IMX series
+ is register-compatible.
+
+ It has Six fixed-function endpoints, as well as endpoint
+ zero (for control transfers).
+
+ Say "y" to link the driver statically, or "m" to build a
+ dynamically linked module called "imx_udc" and force all
+ gadget drivers to also be dynamically linked.
+
+config USB_IMX
+ tristate
+ depends on USB_GADGET_IMX
+ default USB_GADGET
+ select USB_GADGET_SELECTED
config USB_GADGET_M66592
boolean "Renesas M66592 USB Peripheral Controller"
@@ -377,6 +398,24 @@ config USB_FSL_QE
default USB_GADGET
select USB_GADGET_SELECTED
+config USB_GADGET_CI13XXX
+ boolean "MIPS USB CI13xxx"
+ depends on PCI
+ select USB_GADGET_DUALSPEED
+ help
+ MIPS USB IP core family device controller
+ Currently it only supports IP part number CI13412
+
+ Say "y" to link the driver statically, or "m" to build a
+ dynamically linked module called "ci13xxx_udc" and force all
+ gadget drivers to also be dynamically linked.
+
+config USB_CI13XXX
+ tristate
+ depends on USB_GADGET_CI13XXX
+ default USB_GADGET
+ select USB_GADGET_SELECTED
+
config USB_GADGET_NET2280
boolean "NetChip 228x"
depends on PCI
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index bd4041b47dce..39a51d746cb7 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -10,6 +10,7 @@ obj-$(CONFIG_USB_NET2280) += net2280.o
obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc.o
obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o
obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o
+obj-$(CONFIG_USB_IMX) += imx_udc.o
obj-$(CONFIG_USB_GOKU) += goku_udc.o
obj-$(CONFIG_USB_OMAP) += omap_udc.o
obj-$(CONFIG_USB_LH7A40X) += lh7a40x_udc.o
@@ -19,6 +20,7 @@ obj-$(CONFIG_USB_ATMEL_USBA) += atmel_usba_udc.o
obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o
obj-$(CONFIG_USB_M66592) += m66592-udc.o
obj-$(CONFIG_USB_FSL_QE) += fsl_qe_udc.o
+obj-$(CONFIG_USB_CI13XXX) += ci13xxx_udc.o
#
# USB gadget drivers
diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c
index a8a1de413321..0b2bb8f0706d 100644
--- a/drivers/usb/gadget/at91_udc.c
+++ b/drivers/usb/gadget/at91_udc.c
@@ -1474,7 +1474,7 @@ static struct at91_udc controller = {
.ep0 = &controller.ep[0].ep,
.name = driver_name,
.dev = {
- .bus_id = "gadget",
+ .init_name = "gadget",
.release = nop_release,
}
},
diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c
index ae30ab1d264f..65b03e3445a1 100644
--- a/drivers/usb/gadget/atmel_usba_udc.c
+++ b/drivers/usb/gadget/atmel_usba_udc.c
@@ -1034,7 +1034,7 @@ static struct usba_udc the_udc = {
.is_dualspeed = 1,
.name = "atmel_usba_udc",
.dev = {
- .bus_id = "gadget",
+ .init_name = "gadget",
.release = nop_release,
},
},
diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c
new file mode 100644
index 000000000000..bebf911c7e5f
--- /dev/null
+++ b/drivers/usb/gadget/ci13xxx_udc.c
@@ -0,0 +1,2830 @@
+/*
+ * ci13xxx_udc.c - MIPS USB IP core family device controller
+ *
+ * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
+ *
+ * Author: David Lopo
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/*
+ * Description: MIPS USB IP core family device controller
+ * Currently it only supports IP part number CI13412
+ *
+ * This driver is composed of several blocks:
+ * - HW: hardware interface
+ * - DBG: debug facilities (optional)
+ * - UTIL: utilities
+ * - ISR: interrupts handling
+ * - ENDPT: endpoint operations (Gadget API)
+ * - GADGET: gadget operations (Gadget API)
+ * - BUS: bus glue code, bus abstraction layer
+ * - PCI: PCI core interface and PCI resources (interrupts, memory...)
+ *
+ * Compile Options
+ * - CONFIG_USB_GADGET_DEBUG_FILES: enable debug facilities
+ * - STALL_IN: non-empty bulk-in pipes cannot be halted
+ * if defined mass storage compliance succeeds but with warnings
+ * => case 4: Hi > Dn
+ * => case 5: Hi > Di
+ * => case 8: Hi <> Do
+ * if undefined usbtest 13 fails
+ * - TRACE: enable function tracing (depends on DEBUG)
+ *
+ * Main Features
+ * - Chapter 9 & Mass Storage Compliance with Gadget File Storage
+ * - Chapter 9 Compliance with Gadget Zero (STALL_IN undefined)
+ * - Normal & LPM support
+ *
+ * USBTEST Report
+ * - OK: 0-12, 13 (STALL_IN defined) & 14
+ * - Not Supported: 15 & 16 (ISO)
+ *
+ * TODO List
+ * - OTG
+ * - Isochronous & Interrupt Traffic
+ * - Handle requests which spawns into several TDs
+ * - GET_STATUS(device) - always reports 0
+ * - Gadget API (majority of optional features)
+ * - Suspend & Remote Wakeup
+ */
+#include <linux/device.h>
+#include <linux/dmapool.h>
+#include <linux/dma-mapping.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include "ci13xxx_udc.h"
+
+
+/******************************************************************************
+ * DEFINE
+ *****************************************************************************/
+/* ctrl register bank access */
+static DEFINE_SPINLOCK(udc_lock);
+
+/* driver name */
+#define UDC_DRIVER_NAME "ci13xxx_udc"
+
+/* control endpoint description */
+static const struct usb_endpoint_descriptor
+ctrl_endpt_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+ .wMaxPacketSize = cpu_to_le16(CTRL_PAYLOAD_MAX),
+};
+
+/* UDC descriptor */
+static struct ci13xxx *_udc;
+
+/* Interrupt statistics */
+#define ISR_MASK 0x1F
+static struct {
+ u32 test;
+ u32 ui;
+ u32 uei;
+ u32 pci;
+ u32 uri;
+ u32 sli;
+ u32 none;
+ struct {
+ u32 cnt;
+ u32 buf[ISR_MASK+1];
+ u32 idx;
+ } hndl;
+} isr_statistics;
+
+/**
+ * ffs_nr: find first (least significant) bit set
+ * @x: the word to search
+ *
+ * This function returns bit number (instead of position)
+ */
+static int ffs_nr(u32 x)
+{
+ int n = ffs(x);
+
+ return n ? n-1 : 32;
+}
+
+/******************************************************************************
+ * HW block
+ *****************************************************************************/
+/* register bank descriptor */
+static struct {
+ unsigned lpm; /* is LPM? */
+ void __iomem *abs; /* bus map offset */
+ void __iomem *cap; /* bus map offset + CAP offset + CAP data */
+ size_t size; /* bank size */
+} hw_bank;
+
+/* UDC register map */
+#define ABS_CAPLENGTH (0x100UL)
+#define ABS_HCCPARAMS (0x108UL)
+#define ABS_DCCPARAMS (0x124UL)
+#define ABS_TESTMODE (hw_bank.lpm ? 0x0FCUL : 0x138UL)
+/* offset to CAPLENTGH (addr + data) */
+#define CAP_USBCMD (0x000UL)
+#define CAP_USBSTS (0x004UL)
+#define CAP_USBINTR (0x008UL)
+#define CAP_DEVICEADDR (0x014UL)
+#define CAP_ENDPTLISTADDR (0x018UL)
+#define CAP_PORTSC (0x044UL)
+#define CAP_DEVLC (0x0B4UL)
+#define CAP_USBMODE (hw_bank.lpm ? 0x0C8UL : 0x068UL)
+#define CAP_ENDPTSETUPSTAT (hw_bank.lpm ? 0x0D8UL : 0x06CUL)
+#define CAP_ENDPTPRIME (hw_bank.lpm ? 0x0DCUL : 0x070UL)
+#define CAP_ENDPTFLUSH (hw_bank.lpm ? 0x0E0UL : 0x074UL)
+#define CAP_ENDPTSTAT (hw_bank.lpm ? 0x0E4UL : 0x078UL)
+#define CAP_ENDPTCOMPLETE (hw_bank.lpm ? 0x0E8UL : 0x07CUL)
+#define CAP_ENDPTCTRL (hw_bank.lpm ? 0x0ECUL : 0x080UL)
+#define CAP_LAST (hw_bank.lpm ? 0x12CUL : 0x0C0UL)
+
+/* maximum number of enpoints: valid only after hw_device_reset() */
+static unsigned hw_ep_max;
+
+/**
+ * hw_ep_bit: calculates the bit number
+ * @num: endpoint number
+ * @dir: endpoint direction
+ *
+ * This function returns bit number
+ */
+static inline int hw_ep_bit(int num, int dir)
+{
+ return num + (dir ? 16 : 0);
+}
+
+/**
+ * hw_aread: reads from register bitfield
+ * @addr: address relative to bus map
+ * @mask: bitfield mask
+ *
+ * This function returns register bitfield data
+ */
+static u32 hw_aread(u32 addr, u32 mask)
+{
+ return ioread32(addr + hw_bank.abs) & mask;
+}
+
+/**
+ * hw_awrite: writes to register bitfield
+ * @addr: address relative to bus map
+ * @mask: bitfield mask
+ * @data: new data
+ */
+static void hw_awrite(u32 addr, u32 mask, u32 data)
+{
+ iowrite32(hw_aread(addr, ~mask) | (data & mask),
+ addr + hw_bank.abs);
+}
+
+/**
+ * hw_cread: reads from register bitfield
+ * @addr: address relative to CAP offset plus content
+ * @mask: bitfield mask
+ *
+ * This function returns register bitfield data
+ */
+static u32 hw_cread(u32 addr, u32 mask)
+{
+ return ioread32(addr + hw_bank.cap) & mask;
+}
+
+/**
+ * hw_cwrite: writes to register bitfield
+ * @addr: address relative to CAP offset plus content
+ * @mask: bitfield mask
+ * @data: new data
+ */
+static void hw_cwrite(u32 addr, u32 mask, u32 data)
+{
+ iowrite32(hw_cread(addr, ~mask) | (data & mask),
+ addr + hw_bank.cap);
+}
+
+/**
+ * hw_ctest_and_clear: tests & clears register bitfield
+ * @addr: address relative to CAP offset plus content
+ * @mask: bitfield mask
+ *
+ * This function returns register bitfield data
+ */
+static u32 hw_ctest_and_clear(u32 addr, u32 mask)
+{
+ u32 reg = hw_cread(addr, mask);
+
+ iowrite32(reg, addr + hw_bank.cap);
+ return reg;
+}
+
+/**
+ * hw_ctest_and_write: tests & writes register bitfield
+ * @addr: address relative to CAP offset plus content
+ * @mask: bitfield mask
+ * @data: new data
+ *
+ * This function returns register bitfield data
+ */
+static u32 hw_ctest_and_write(u32 addr, u32 mask, u32 data)
+{
+ u32 reg = hw_cread(addr, ~0);
+
+ iowrite32((reg & ~mask) | (data & mask), addr + hw_bank.cap);
+ return (reg & mask) >> ffs_nr(mask);
+}
+
+/**
+ * hw_device_reset: resets chip (execute without interruption)
+ * @base: register base address
+ *
+ * This function returns an error code
+ */
+static int hw_device_reset(void __iomem *base)
+{
+ u32 reg;
+
+ /* bank is a module variable */
+ hw_bank.abs = base;
+
+ hw_bank.cap = hw_bank.abs;
+ hw_bank.cap += ABS_CAPLENGTH;
+ hw_bank.cap += ioread8(hw_bank.cap);
+
+ reg = hw_aread(ABS_HCCPARAMS, HCCPARAMS_LEN) >> ffs_nr(HCCPARAMS_LEN);
+ hw_bank.lpm = reg;
+ hw_bank.size = hw_bank.cap - hw_bank.abs;
+ hw_bank.size += CAP_LAST;
+ hw_bank.size /= sizeof(u32);
+
+ /* should flush & stop before reset */
+ hw_cwrite(CAP_ENDPTFLUSH, ~0, ~0);
+ hw_cwrite(CAP_USBCMD, USBCMD_RS, 0);
+
+ hw_cwrite(CAP_USBCMD, USBCMD_RST, USBCMD_RST);
+ while (hw_cread(CAP_USBCMD, USBCMD_RST))
+ udelay(10); /* not RTOS friendly */
+
+ /* USBMODE should be configured step by step */
+ hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE);
+ hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_DEVICE);
+ hw_cwrite(CAP_USBMODE, USBMODE_SLOM, USBMODE_SLOM); /* HW >= 2.3 */
+
+ if (hw_cread(CAP_USBMODE, USBMODE_CM) != USBMODE_CM_DEVICE) {
+ pr_err("cannot enter in device mode");
+ pr_err("lpm = %i", hw_bank.lpm);
+ return -ENODEV;
+ }
+
+ reg = hw_aread(ABS_DCCPARAMS, DCCPARAMS_DEN) >> ffs_nr(DCCPARAMS_DEN);
+ if (reg == 0 || reg > ENDPT_MAX)
+ return -ENODEV;
+
+ hw_ep_max = reg; /* cache hw ENDPT_MAX */
+
+ /* setup lock mode ? */
+
+ /* ENDPTSETUPSTAT is '0' by default */
+
+ /* HCSPARAMS.bf.ppc SHOULD BE zero for device */
+
+ return 0;
+}
+
+/**
+ * hw_device_state: enables/disables interrupts & starts/stops device (execute
+ * without interruption)
+ * @dma: 0 => disable, !0 => enable and set dma engine
+ *
+ * This function returns an error code
+ */
+static int hw_device_state(u32 dma)
+{
+ if (dma) {
+ hw_cwrite(CAP_ENDPTLISTADDR, ~0, dma);
+ /* interrupt, error, port change, reset, sleep/suspend */
+ hw_cwrite(CAP_USBINTR, ~0,
+ USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
+ hw_cwrite(CAP_USBCMD, USBCMD_RS, USBCMD_RS);
+ } else {
+ hw_cwrite(CAP_USBCMD, USBCMD_RS, 0);
+ hw_cwrite(CAP_USBINTR, ~0, 0);
+ }
+ return 0;
+}
+
+/**
+ * hw_ep_flush: flush endpoint fifo (execute without interruption)
+ * @num: endpoint number
+ * @dir: endpoint direction
+ *
+ * This function returns an error code
+ */
+static int hw_ep_flush(int num, int dir)
+{
+ int n = hw_ep_bit(num, dir);
+
+ do {
+ /* flush any pending transfer */
+ hw_cwrite(CAP_ENDPTFLUSH, BIT(n), BIT(n));
+ while (hw_cread(CAP_ENDPTFLUSH, BIT(n)))
+ cpu_relax();
+ } while (hw_cread(CAP_ENDPTSTAT, BIT(n)));
+
+ return 0;
+}
+
+/**
+ * hw_ep_disable: disables endpoint (execute without interruption)
+ * @num: endpoint number
+ * @dir: endpoint direction
+ *
+ * This function returns an error code
+ */
+static int hw_ep_disable(int num, int dir)
+{
+ hw_ep_flush(num, dir);
+ hw_cwrite(CAP_ENDPTCTRL + num * sizeof(u32),
+ dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
+ return 0;
+}
+
+/**
+ * hw_ep_enable: enables endpoint (execute without interruption)
+ * @num: endpoint number
+ * @dir: endpoint direction
+ * @type: endpoint type
+ *
+ * This function returns an error code
+ */
+static int hw_ep_enable(int num, int dir, int type)
+{
+ u32 mask, data;
+
+ if (dir) {
+ mask = ENDPTCTRL_TXT; /* type */
+ data = type << ffs_nr(mask);
+
+ mask |= ENDPTCTRL_TXS; /* unstall */
+ mask |= ENDPTCTRL_TXR; /* reset data toggle */
+ data |= ENDPTCTRL_TXR;
+ mask |= ENDPTCTRL_TXE; /* enable */
+ data |= ENDPTCTRL_TXE;
+ } else {
+ mask = ENDPTCTRL_RXT; /* type */
+ data = type << ffs_nr(mask);
+
+ mask |= ENDPTCTRL_RXS; /* unstall */
+ mask |= ENDPTCTRL_RXR; /* reset data toggle */
+ data |= ENDPTCTRL_RXR;
+ mask |= ENDPTCTRL_RXE; /* enable */
+ data |= ENDPTCTRL_RXE;
+ }
+ hw_cwrite(CAP_ENDPTCTRL + num * sizeof(u32), mask, data);
+ return 0;
+}
+
+/**
+ * hw_ep_get_halt: return endpoint halt status
+ * @num: endpoint number
+ * @dir: endpoint direction
+ *
+ * This function returns 1 if endpoint halted
+ */
+static int hw_ep_get_halt(int num, int dir)
+{
+ u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
+
+ return hw_cread(CAP_ENDPTCTRL + num * sizeof(u32), mask) ? 1 : 0;
+}
+
+/**
+ * hw_ep_is_primed: test if endpoint is primed (execute without interruption)
+ * @num: endpoint number
+ * @dir: endpoint direction
+ *
+ * This function returns true if endpoint primed
+ */
+static int hw_ep_is_primed(int num, int dir)
+{
+ u32 reg = hw_cread(CAP_ENDPTPRIME, ~0) | hw_cread(CAP_ENDPTSTAT, ~0);
+
+ return test_bit(hw_ep_bit(num, dir), (void *)&reg);
+}
+
+/**
+ * hw_test_and_clear_setup_status: test & clear setup status (execute without
+ * interruption)
+ * @n: bit number (endpoint)
+ *
+ * This function returns setup status
+ */
+static int hw_test_and_clear_setup_status(int n)
+{
+ return hw_ctest_and_clear(CAP_ENDPTSETUPSTAT, BIT(n));
+}
+
+/**
+ * hw_ep_prime: primes endpoint (execute without interruption)
+ * @num: endpoint number
+ * @dir: endpoint direction
+ * @is_ctrl: true if control endpoint
+ *
+ * This function returns an error code
+ */
+static int hw_ep_prime(int num, int dir, int is_ctrl)
+{
+ int n = hw_ep_bit(num, dir);
+
+ /* the caller should flush first */
+ if (hw_ep_is_primed(num, dir))
+ return -EBUSY;
+
+ if (is_ctrl && dir == RX && hw_cread(CAP_ENDPTSETUPSTAT, BIT(num)))
+ return -EAGAIN;
+
+ hw_cwrite(CAP_ENDPTPRIME, BIT(n), BIT(n));
+
+ while (hw_cread(CAP_ENDPTPRIME, BIT(n)))
+ cpu_relax();
+ if (is_ctrl && dir == RX && hw_cread(CAP_ENDPTSETUPSTAT, BIT(num)))
+ return -EAGAIN;
+
+ /* status shoult be tested according with manual but it doesn't work */
+ return 0;
+}
+
+/**
+ * hw_ep_set_halt: configures ep halt & resets data toggle after clear (execute
+ * without interruption)
+ * @num: endpoint number
+ * @dir: endpoint direction
+ * @value: true => stall, false => unstall
+ *
+ * This function returns an error code
+ */
+static int hw_ep_set_halt(int num, int dir, int value)
+{
+ if (value != 0 && value != 1)
+ return -EINVAL;
+
+ do {
+ u32 addr = CAP_ENDPTCTRL + num * sizeof(u32);
+ u32 mask_xs = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
+ u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
+
+ /* data toggle - reserved for EP0 but it's in ESS */
+ hw_cwrite(addr, mask_xs|mask_xr, value ? mask_xs : mask_xr);
+
+ } while (value != hw_ep_get_halt(num, dir));
+
+ return 0;
+}
+
+/**
+ * hw_intr_clear: disables interrupt & clears interrupt status (execute without
+ * interruption)
+ * @n: interrupt bit
+ *
+ * This function returns an error code
+ */
+static int hw_intr_clear(int n)
+{
+ if (n >= REG_BITS)
+ return -EINVAL;
+
+ hw_cwrite(CAP_USBINTR, BIT(n), 0);
+ hw_cwrite(CAP_USBSTS, BIT(n), BIT(n));
+ return 0;
+}
+
+/**
+ * hw_intr_force: enables interrupt & forces interrupt status (execute without
+ * interruption)
+ * @n: interrupt bit
+ *
+ * This function returns an error code
+ */
+static int hw_intr_force(int n)
+{
+ if (n >= REG_BITS)
+ return -EINVAL;
+
+ hw_awrite(ABS_TESTMODE, TESTMODE_FORCE, TESTMODE_FORCE);
+ hw_cwrite(CAP_USBINTR, BIT(n), BIT(n));
+ hw_cwrite(CAP_USBSTS, BIT(n), BIT(n));
+ hw_awrite(ABS_TESTMODE, TESTMODE_FORCE, 0);
+ return 0;
+}
+
+/**
+ * hw_is_port_high_speed: test if port is high speed
+ *
+ * This function returns true if high speed port
+ */
+static int hw_port_is_high_speed(void)
+{
+ return hw_bank.lpm ? hw_cread(CAP_DEVLC, DEVLC_PSPD) :
+ hw_cread(CAP_PORTSC, PORTSC_HSP);
+}
+
+/**
+ * hw_port_test_get: reads port test mode value
+ *
+ * This function returns port test mode value
+ */
+static u8 hw_port_test_get(void)
+{
+ return hw_cread(CAP_PORTSC, PORTSC_PTC) >> ffs_nr(PORTSC_PTC);
+}
+
+/**
+ * hw_port_test_set: writes port test mode (execute without interruption)
+ * @mode: new value
+ *
+ * This function returns an error code
+ */
+static int hw_port_test_set(u8 mode)
+{
+ const u8 TEST_MODE_MAX = 7;
+
+ if (mode > TEST_MODE_MAX)
+ return -EINVAL;
+
+ hw_cwrite(CAP_PORTSC, PORTSC_PTC, mode << ffs_nr(PORTSC_PTC));
+ return 0;
+}
+
+/**
+ * hw_read_intr_enable: returns interrupt enable register
+ *
+ * This function returns register data
+ */
+static u32 hw_read_intr_enable(void)
+{
+ return hw_cread(CAP_USBINTR, ~0);
+}
+
+/**
+ * hw_read_intr_status: returns interrupt status register
+ *
+ * This function returns register data
+ */
+static u32 hw_read_intr_status(void)
+{
+ return hw_cread(CAP_USBSTS, ~0);
+}
+
+/**
+ * hw_register_read: reads all device registers (execute without interruption)
+ * @buf: destination buffer
+ * @size: buffer size
+ *
+ * This function returns number of registers read
+ */
+static size_t hw_register_read(u32 *buf, size_t size)
+{
+ unsigned i;
+
+ if (size > hw_bank.size)
+ size = hw_bank.size;
+
+ for (i = 0; i < size; i++)
+ buf[i] = hw_aread(i * sizeof(u32), ~0);
+
+ return size;
+}
+
+/**
+ * hw_register_write: writes to register
+ * @addr: register address
+ * @data: register value
+ *
+ * This function returns an error code
+ */
+static int hw_register_write(u16 addr, u32 data)
+{
+ /* align */
+ addr /= sizeof(u32);
+
+ if (addr >= hw_bank.size)
+ return -EINVAL;
+
+ /* align */
+ addr *= sizeof(u32);
+
+ hw_awrite(addr, ~0, data);
+ return 0;
+}
+
+/**
+ * hw_test_and_clear_complete: test & clear complete status (execute without
+ * interruption)
+ * @n: bit number (endpoint)
+ *
+ * This function returns complete status
+ */
+static int hw_test_and_clear_complete(int n)
+{
+ return hw_ctest_and_clear(CAP_ENDPTCOMPLETE, BIT(n));
+}
+
+/**
+ * hw_test_and_clear_intr_active: test & clear active interrupts (execute
+ * without interruption)
+ *
+ * This function returns active interrutps
+ */
+static u32 hw_test_and_clear_intr_active(void)
+{
+ u32 reg = hw_read_intr_status() & hw_read_intr_enable();
+
+ hw_cwrite(CAP_USBSTS, ~0, reg);
+ return reg;
+}
+
+/**
+ * hw_test_and_clear_setup_guard: test & clear setup guard (execute without
+ * interruption)
+ *
+ * This function returns guard value
+ */
+static int hw_test_and_clear_setup_guard(void)
+{
+ return hw_ctest_and_write(CAP_USBCMD, USBCMD_SUTW, 0);
+}
+
+/**
+ * hw_test_and_set_setup_guard: test & set setup guard (execute without
+ * interruption)
+ *
+ * This function returns guard value
+ */
+static int hw_test_and_set_setup_guard(void)
+{
+ return hw_ctest_and_write(CAP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
+}
+
+/**
+ * hw_usb_set_address: configures USB address (execute without interruption)
+ * @value: new USB address
+ *
+ * This function returns an error code
+ */
+static int hw_usb_set_address(u8 value)
+{
+ /* advance */
+ hw_cwrite(CAP_DEVICEADDR, DEVICEADDR_USBADR | DEVICEADDR_USBADRA,
+ value << ffs_nr(DEVICEADDR_USBADR) | DEVICEADDR_USBADRA);
+ return 0;
+}
+
+/**
+ * hw_usb_reset: restart device after a bus reset (execute without
+ * interruption)
+ *
+ * This function returns an error code
+ */
+static int hw_usb_reset(void)
+{
+ hw_usb_set_address(0);
+
+ /* ESS flushes only at end?!? */
+ hw_cwrite(CAP_ENDPTFLUSH, ~0, ~0); /* flush all EPs */
+
+ /* clear setup token semaphores */
+ hw_cwrite(CAP_ENDPTSETUPSTAT, 0, 0); /* writes its content */
+
+ /* clear complete status */
+ hw_cwrite(CAP_ENDPTCOMPLETE, 0, 0); /* writes its content */
+
+ /* wait until all bits cleared */
+ while (hw_cread(CAP_ENDPTPRIME, ~0))
+ udelay(10); /* not RTOS friendly */
+
+ /* reset all endpoints ? */
+
+ /* reset internal status and wait for further instructions
+ no need to verify the port reset status (ESS does it) */
+
+ return 0;
+}
+
+/******************************************************************************
+ * DBG block
+ *****************************************************************************/
+/**
+ * show_device: prints information about device capabilities and status
+ *
+ * Check "device.h" for details
+ */
+static ssize_t show_device(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct usb_gadget *gadget = &udc->gadget;
+ int n = 0;
+
+ dbg_trace("[%s] %p\n", __func__, buf);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ return 0;
+ }
+
+ n += scnprintf(buf + n, PAGE_SIZE - n, "speed = %d\n",
+ gadget->speed);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "is_dualspeed = %d\n",
+ gadget->is_dualspeed);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "is_otg = %d\n",
+ gadget->is_otg);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "is_a_peripheral = %d\n",
+ gadget->is_a_peripheral);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "b_hnp_enable = %d\n",
+ gadget->b_hnp_enable);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "a_hnp_support = %d\n",
+ gadget->a_hnp_support);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "a_alt_hnp_support = %d\n",
+ gadget->a_alt_hnp_support);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "name = %s\n",
+ (gadget->name ? gadget->name : ""));
+
+ return n;
+}
+static DEVICE_ATTR(device, S_IRUSR, show_device, NULL);
+
+/**
+ * show_driver: prints information about attached gadget (if any)
+ *
+ * Check "device.h" for details
+ */
+static ssize_t show_driver(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ struct usb_gadget_driver *driver = udc->driver;
+ int n = 0;
+
+ dbg_trace("[%s] %p\n", __func__, buf);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ return 0;
+ }
+
+ if (driver == NULL)
+ return scnprintf(buf, PAGE_SIZE,
+ "There is no gadget attached!\n");
+
+ n += scnprintf(buf + n, PAGE_SIZE - n, "function = %s\n",
+ (driver->function ? driver->function : ""));
+ n += scnprintf(buf + n, PAGE_SIZE - n, "max speed = %d\n",
+ driver->speed);
+
+ return n;
+}
+static DEVICE_ATTR(driver, S_IRUSR, show_driver, NULL);
+
+/* Maximum event message length */
+#define DBG_DATA_MSG 64UL
+
+/* Maximum event messages */
+#define DBG_DATA_MAX 128UL
+
+/* Event buffer descriptor */
+static struct {
+ char (buf[DBG_DATA_MAX])[DBG_DATA_MSG]; /* buffer */
+ unsigned idx; /* index */
+ unsigned tty; /* print to console? */
+ rwlock_t lck; /* lock */
+} dbg_data = {
+ .idx = 0,
+ .tty = 0,
+ .lck = __RW_LOCK_UNLOCKED(lck)
+};
+
+/**
+ * dbg_dec: decrements debug event index
+ * @idx: buffer index
+ */
+static void dbg_dec(unsigned *idx)
+{
+ *idx = (*idx - 1) & (DBG_DATA_MAX-1);
+}
+
+/**
+ * dbg_inc: increments debug event index
+ * @idx: buffer index
+ */
+static void dbg_inc(unsigned *idx)
+{
+ *idx = (*idx + 1) & (DBG_DATA_MAX-1);
+}
+
+/**
+ * dbg_print: prints the common part of the event
+ * @addr: endpoint address
+ * @name: event name
+ * @status: status
+ * @extra: extra information
+ */
+static void dbg_print(u8 addr, const char *name, int status, const char *extra)
+{
+ struct timeval tval;
+ unsigned int stamp;
+ unsigned long flags;
+
+ write_lock_irqsave(&dbg_data.lck, flags);
+
+ do_gettimeofday(&tval);
+ stamp = tval.tv_sec & 0xFFFF; /* 2^32 = 4294967296. Limit to 4096s */
+ stamp = stamp * 1000000 + tval.tv_usec;
+
+ scnprintf(dbg_data.buf[dbg_data.idx], DBG_DATA_MSG,
+ "%04X\t» %02X %-7.7s %4i «\t%s\n",
+ stamp, addr, name, status, extra);
+
+ dbg_inc(&dbg_data.idx);
+
+ write_unlock_irqrestore(&dbg_data.lck, flags);
+
+ if (dbg_data.tty != 0)
+ pr_notice("%04X\t» %02X %-7.7s %4i «\t%s\n",
+ stamp, addr, name, status, extra);
+}
+
+/**
+ * dbg_done: prints a DONE event
+ * @addr: endpoint address
+ * @td: transfer descriptor
+ * @status: status
+ */
+static void dbg_done(u8 addr, const u32 token, int status)
+{
+ char msg[DBG_DATA_MSG];
+
+ scnprintf(msg, sizeof(msg), "%d %02X",
+ (int)(token & TD_TOTAL_BYTES) >> ffs_nr(TD_TOTAL_BYTES),
+ (int)(token & TD_STATUS) >> ffs_nr(TD_STATUS));
+ dbg_print(addr, "DONE", status, msg);
+}
+
+/**
+ * dbg_event: prints a generic event
+ * @addr: endpoint address
+ * @name: event name
+ * @status: status
+ */
+static void dbg_event(u8 addr, const char *name, int status)
+{
+ if (name != NULL)
+ dbg_print(addr, name, status, "");
+}
+
+/*
+ * dbg_queue: prints a QUEUE event
+ * @addr: endpoint address
+ * @req: USB request
+ * @status: status
+ */
+static void dbg_queue(u8 addr, const struct usb_request *req, int status)
+{
+ char msg[DBG_DATA_MSG];
+
+ if (req != NULL) {
+ scnprintf(msg, sizeof(msg),
+ "%d %d", !req->no_interrupt, req->length);
+ dbg_print(addr, "QUEUE", status, msg);
+ }
+}
+
+/**
+ * dbg_setup: prints a SETUP event
+ * @addr: endpoint address
+ * @req: setup request
+ */
+static void dbg_setup(u8 addr, const struct usb_ctrlrequest *req)
+{
+ char msg[DBG_DATA_MSG];
+
+ if (req != NULL) {
+ scnprintf(msg, sizeof(msg),
+ "%02X %02X %04X %04X %d", req->bRequestType,
+ req->bRequest, le16_to_cpu(req->wValue),
+ le16_to_cpu(req->wIndex), le16_to_cpu(req->wLength));
+ dbg_print(addr, "SETUP", 0, msg);
+ }
+}
+
+/**
+ * show_events: displays the event buffer
+ *
+ * Check "device.h" for details
+ */
+static ssize_t show_events(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ unsigned long flags;
+ unsigned i, j, n = 0;
+
+ dbg_trace("[%s] %p\n", __func__, buf);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ return 0;
+ }
+
+ read_lock_irqsave(&dbg_data.lck, flags);
+
+ i = dbg_data.idx;
+ for (dbg_dec(&i); i != dbg_data.idx; dbg_dec(&i)) {
+ n += strlen(dbg_data.buf[i]);
+ if (n >= PAGE_SIZE) {
+ n -= strlen(dbg_data.buf[i]);
+ break;
+ }
+ }
+ for (j = 0, dbg_inc(&i); j < n; dbg_inc(&i))
+ j += scnprintf(buf + j, PAGE_SIZE - j,
+ "%s", dbg_data.buf[i]);
+
+ read_unlock_irqrestore(&dbg_data.lck, flags);
+
+ return n;
+}
+
+/**
+ * store_events: configure if events are going to be also printed to console
+ *
+ * Check "device.h" for details
+ */
+static ssize_t store_events(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned tty;
+
+ dbg_trace("[%s] %p, %d\n", __func__, buf, count);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ goto done;
+ }
+
+ if (sscanf(buf, "%u", &tty) != 1 || tty > 1) {
+ dev_err(dev, "<1|0>: enable|disable console log\n");
+ goto done;
+ }
+
+ dbg_data.tty = tty;
+ dev_info(dev, "tty = %u", dbg_data.tty);
+
+ done:
+ return count;
+}
+static DEVICE_ATTR(events, S_IRUSR | S_IWUSR, show_events, store_events);
+
+/**
+ * show_inters: interrupt status, enable status and historic
+ *
+ * Check "device.h" for details
+ */
+static ssize_t show_inters(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ unsigned long flags;
+ u32 intr;
+ unsigned i, j, n = 0;
+
+ dbg_trace("[%s] %p\n", __func__, buf);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ return 0;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+
+ n += scnprintf(buf + n, PAGE_SIZE - n,
+ "status = %08x\n", hw_read_intr_status());
+ n += scnprintf(buf + n, PAGE_SIZE - n,
+ "enable = %08x\n", hw_read_intr_enable());
+
+ n += scnprintf(buf + n, PAGE_SIZE - n, "*test = %d\n",
+ isr_statistics.test);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "» ui = %d\n",
+ isr_statistics.ui);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "» uei = %d\n",
+ isr_statistics.uei);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "» pci = %d\n",
+ isr_statistics.pci);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "» uri = %d\n",
+ isr_statistics.uri);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "» sli = %d\n",
+ isr_statistics.sli);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "*none = %d\n",
+ isr_statistics.none);
+ n += scnprintf(buf + n, PAGE_SIZE - n, "*hndl = %d\n",
+ isr_statistics.hndl.cnt);
+
+ for (i = isr_statistics.hndl.idx, j = 0; j <= ISR_MASK; j++, i++) {
+ i &= ISR_MASK;
+ intr = isr_statistics.hndl.buf[i];
+
+ if (USBi_UI & intr)
+ n += scnprintf(buf + n, PAGE_SIZE - n, "ui ");
+ intr &= ~USBi_UI;
+ if (USBi_UEI & intr)
+ n += scnprintf(buf + n, PAGE_SIZE - n, "uei ");
+ intr &= ~USBi_UEI;
+ if (USBi_PCI & intr)
+ n += scnprintf(buf + n, PAGE_SIZE - n, "pci ");
+ intr &= ~USBi_PCI;
+ if (USBi_URI & intr)
+ n += scnprintf(buf + n, PAGE_SIZE - n, "uri ");
+ intr &= ~USBi_URI;
+ if (USBi_SLI & intr)
+ n += scnprintf(buf + n, PAGE_SIZE - n, "sli ");
+ intr &= ~USBi_SLI;
+ if (intr)
+ n += scnprintf(buf + n, PAGE_SIZE - n, "??? ");
+ if (isr_statistics.hndl.buf[i])
+ n += scnprintf(buf + n, PAGE_SIZE - n, "\n");
+ }
+
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ return n;
+}
+
+/**
+ * store_inters: enable & force or disable an individual interrutps
+ * (to be used for test purposes only)
+ *
+ * Check "device.h" for details
+ */
+static ssize_t store_inters(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ unsigned long flags;
+ unsigned en, bit;
+
+ dbg_trace("[%s] %p, %d\n", __func__, buf, count);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ goto done;
+ }
+
+ if (sscanf(buf, "%u %u", &en, &bit) != 2 || en > 1) {
+ dev_err(dev, "<1|0> <bit>: enable|disable interrupt");
+ goto done;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+ if (en) {
+ if (hw_intr_force(bit))
+ dev_err(dev, "invalid bit number\n");
+ else
+ isr_statistics.test++;
+ } else {
+ if (hw_intr_clear(bit))
+ dev_err(dev, "invalid bit number\n");
+ }
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ done:
+ return count;
+}
+static DEVICE_ATTR(inters, S_IRUSR | S_IWUSR, show_inters, store_inters);
+
+/**
+ * show_port_test: reads port test mode
+ *
+ * Check "device.h" for details
+ */
+static ssize_t show_port_test(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ unsigned long flags;
+ unsigned mode;
+
+ dbg_trace("[%s] %p\n", __func__, buf);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ return 0;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+ mode = hw_port_test_get();
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ return scnprintf(buf, PAGE_SIZE, "mode = %u\n", mode);
+}
+
+/**
+ * store_port_test: writes port test mode
+ *
+ * Check "device.h" for details
+ */
+static ssize_t store_port_test(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ unsigned long flags;
+ unsigned mode;
+
+ dbg_trace("[%s] %p, %d\n", __func__, buf, count);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ goto done;
+ }
+
+ if (sscanf(buf, "%u", &mode) != 1) {
+ dev_err(dev, "<mode>: set port test mode");
+ goto done;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+ if (hw_port_test_set(mode))
+ dev_err(dev, "invalid mode\n");
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ done:
+ return count;
+}
+static DEVICE_ATTR(port_test, S_IRUSR | S_IWUSR,
+ show_port_test, store_port_test);
+
+/**
+ * show_qheads: DMA contents of all queue heads
+ *
+ * Check "device.h" for details
+ */
+static ssize_t show_qheads(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ unsigned long flags;
+ unsigned i, j, n = 0;
+
+ dbg_trace("[%s] %p\n", __func__, buf);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ return 0;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+ for (i = 0; i < hw_ep_max; i++) {
+ struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+ n += scnprintf(buf + n, PAGE_SIZE - n,
+ "EP=%02i: RX=%08X TX=%08X\n",
+ i, (u32)mEp->qh[RX].dma, (u32)mEp->qh[TX].dma);
+ for (j = 0; j < (sizeof(struct ci13xxx_qh)/sizeof(u32)); j++) {
+ n += scnprintf(buf + n, PAGE_SIZE - n,
+ " %04X: %08X %08X\n", j,
+ *((u32 *)mEp->qh[RX].ptr + j),
+ *((u32 *)mEp->qh[TX].ptr + j));
+ }
+ }
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ return n;
+}
+static DEVICE_ATTR(qheads, S_IRUSR, show_qheads, NULL);
+
+/**
+ * show_registers: dumps all registers
+ *
+ * Check "device.h" for details
+ */
+static ssize_t show_registers(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ unsigned long flags;
+ u32 dump[512];
+ unsigned i, k, n = 0;
+
+ dbg_trace("[%s] %p\n", __func__, buf);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ return 0;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+ k = hw_register_read(dump, sizeof(dump)/sizeof(u32));
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ for (i = 0; i < k; i++) {
+ n += scnprintf(buf + n, PAGE_SIZE - n,
+ "reg[0x%04X] = 0x%08X\n",
+ i * (unsigned)sizeof(u32), dump[i]);
+ }
+
+ return n;
+}
+
+/**
+ * store_registers: writes value to register address
+ *
+ * Check "device.h" for details
+ */
+static ssize_t store_registers(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ unsigned long addr, data, flags;
+
+ dbg_trace("[%s] %p, %d\n", __func__, buf, count);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ goto done;
+ }
+
+ if (sscanf(buf, "%li %li", &addr, &data) != 2) {
+ dev_err(dev, "<addr> <data>: write data to register address");
+ goto done;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+ if (hw_register_write(addr, data))
+ dev_err(dev, "invalid address range\n");
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ done:
+ return count;
+}
+static DEVICE_ATTR(registers, S_IRUSR | S_IWUSR,
+ show_registers, store_registers);
+
+/**
+ * show_requests: DMA contents of all requests currently queued (all endpts)
+ *
+ * Check "device.h" for details
+ */
+static ssize_t show_requests(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct ci13xxx *udc = container_of(dev, struct ci13xxx, gadget.dev);
+ unsigned long flags;
+ struct list_head *ptr = NULL;
+ struct ci13xxx_req *req = NULL;
+ unsigned i, j, k, n = 0, qSize = sizeof(struct ci13xxx_td)/sizeof(u32);
+
+ dbg_trace("[%s] %p\n", __func__, buf);
+ if (attr == NULL || buf == NULL) {
+ dev_err(dev, "[%s] EINVAL\n", __func__);
+ return 0;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+ for (i = 0; i < hw_ep_max; i++)
+ for (k = RX; k <= TX; k++)
+ list_for_each(ptr, &udc->ci13xxx_ep[i].qh[k].queue)
+ {
+ req = list_entry(ptr,
+ struct ci13xxx_req, queue);
+
+ n += scnprintf(buf + n, PAGE_SIZE - n,
+ "EP=%02i: TD=%08X %s\n",
+ i, (u32)req->dma,
+ ((k == RX) ? "RX" : "TX"));
+
+ for (j = 0; j < qSize; j++)
+ n += scnprintf(buf + n, PAGE_SIZE - n,
+ " %04X: %08X\n", j,
+ *((u32 *)req->ptr + j));
+ }
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ return n;
+}
+static DEVICE_ATTR(requests, S_IRUSR, show_requests, NULL);
+
+/**
+ * dbg_create_files: initializes the attribute interface
+ * @dev: device
+ *
+ * This function returns an error code
+ */
+__maybe_unused static int dbg_create_files(struct device *dev)
+{
+ int retval = 0;
+
+ if (dev == NULL)
+ return -EINVAL;
+ retval = device_create_file(dev, &dev_attr_device);
+ if (retval)
+ goto done;
+ retval = device_create_file(dev, &dev_attr_driver);
+ if (retval)
+ goto rm_device;
+ retval = device_create_file(dev, &dev_attr_events);
+ if (retval)
+ goto rm_driver;
+ retval = device_create_file(dev, &dev_attr_inters);
+ if (retval)
+ goto rm_events;
+ retval = device_create_file(dev, &dev_attr_port_test);
+ if (retval)
+ goto rm_inters;
+ retval = device_create_file(dev, &dev_attr_qheads);
+ if (retval)
+ goto rm_port_test;
+ retval = device_create_file(dev, &dev_attr_registers);
+ if (retval)
+ goto rm_qheads;
+ retval = device_create_file(dev, &dev_attr_requests);
+ if (retval)
+ goto rm_registers;
+ return 0;
+
+ rm_registers:
+ device_remove_file(dev, &dev_attr_registers);
+ rm_qheads:
+ device_remove_file(dev, &dev_attr_qheads);
+ rm_port_test:
+ device_remove_file(dev, &dev_attr_port_test);
+ rm_inters:
+ device_remove_file(dev, &dev_attr_inters);
+ rm_events:
+ device_remove_file(dev, &dev_attr_events);
+ rm_driver:
+ device_remove_file(dev, &dev_attr_driver);
+ rm_device:
+ device_remove_file(dev, &dev_attr_device);
+ done:
+ return retval;
+}
+
+/**
+ * dbg_remove_files: destroys the attribute interface
+ * @dev: device
+ *
+ * This function returns an error code
+ */
+__maybe_unused static int dbg_remove_files(struct device *dev)
+{
+ if (dev == NULL)
+ return -EINVAL;
+ device_remove_file(dev, &dev_attr_requests);
+ device_remove_file(dev, &dev_attr_registers);
+ device_remove_file(dev, &dev_attr_qheads);
+ device_remove_file(dev, &dev_attr_port_test);
+ device_remove_file(dev, &dev_attr_inters);
+ device_remove_file(dev, &dev_attr_events);
+ device_remove_file(dev, &dev_attr_driver);
+ device_remove_file(dev, &dev_attr_device);
+ return 0;
+}
+
+/******************************************************************************
+ * UTIL block
+ *****************************************************************************/
+/**
+ * _usb_addr: calculates endpoint address from direction & number
+ * @ep: endpoint
+ */
+static inline u8 _usb_addr(struct ci13xxx_ep *ep)
+{
+ return ((ep->dir == TX) ? USB_ENDPOINT_DIR_MASK : 0) | ep->num;
+}
+
+/**
+ * _hardware_queue: configures a request at hardware level
+ * @gadget: gadget
+ * @mEp: endpoint
+ *
+ * This function returns an error code
+ */
+static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
+{
+ unsigned i;
+
+ trace("%p, %p", mEp, mReq);
+
+ /* don't queue twice */
+ if (mReq->req.status == -EALREADY)
+ return -EALREADY;
+
+ if (hw_ep_is_primed(mEp->num, mEp->dir))
+ return -EBUSY;
+
+ mReq->req.status = -EALREADY;
+
+ if (mReq->req.length && !mReq->req.dma) {
+ mReq->req.dma = \
+ dma_map_single(mEp->device, mReq->req.buf,
+ mReq->req.length, mEp->dir ?
+ DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ if (mReq->req.dma == 0)
+ return -ENOMEM;
+
+ mReq->map = 1;
+ }
+
+ /*
+ * TD configuration
+ * TODO - handle requests which spawns into several TDs
+ */
+ memset(mReq->ptr, 0, sizeof(*mReq->ptr));
+ mReq->ptr->next |= TD_TERMINATE;
+ mReq->ptr->token = mReq->req.length << ffs_nr(TD_TOTAL_BYTES);
+ mReq->ptr->token &= TD_TOTAL_BYTES;
+ mReq->ptr->token |= TD_IOC;
+ mReq->ptr->token |= TD_STATUS_ACTIVE;
+ mReq->ptr->page[0] = mReq->req.dma;
+ for (i = 1; i < 5; i++)
+ mReq->ptr->page[i] =
+ (mReq->req.dma + i * PAGE_SIZE) & ~TD_RESERVED_MASK;
+
+ /*
+ * QH configuration
+ * At this point it's guaranteed exclusive access to qhead
+ * (endpt is not primed) so it's no need to use tripwire
+ */
+ mEp->qh[mEp->dir].ptr->td.next = mReq->dma; /* TERMINATE = 0 */
+ mEp->qh[mEp->dir].ptr->td.token &= ~TD_STATUS; /* clear status */
+ if (mReq->req.zero == 0)
+ mEp->qh[mEp->dir].ptr->cap |= QH_ZLT;
+ else
+ mEp->qh[mEp->dir].ptr->cap &= ~QH_ZLT;
+
+ wmb(); /* synchronize before ep prime */
+
+ return hw_ep_prime(mEp->num, mEp->dir,
+ mEp->type == USB_ENDPOINT_XFER_CONTROL);
+}
+
+/**
+ * _hardware_dequeue: handles a request at hardware level
+ * @gadget: gadget
+ * @mEp: endpoint
+ *
+ * This function returns an error code
+ */
+static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
+{
+ trace("%p, %p", mEp, mReq);
+
+ if (mReq->req.status != -EALREADY)
+ return -EINVAL;
+
+ if (hw_ep_is_primed(mEp->num, mEp->dir))
+ hw_ep_flush(mEp->num, mEp->dir);
+
+ mReq->req.status = 0;
+
+ if (mReq->map) {
+ dma_unmap_single(mEp->device, mReq->req.dma, mReq->req.length,
+ mEp->dir ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
+ mReq->req.dma = 0;
+ mReq->map = 0;
+ }
+
+ mReq->req.status = mReq->ptr->token & TD_STATUS;
+ if ((TD_STATUS_ACTIVE & mReq->req.status) != 0)
+ mReq->req.status = -ECONNRESET;
+ else if ((TD_STATUS_HALTED & mReq->req.status) != 0)
+ mReq->req.status = -1;
+ else if ((TD_STATUS_DT_ERR & mReq->req.status) != 0)
+ mReq->req.status = -1;
+ else if ((TD_STATUS_TR_ERR & mReq->req.status) != 0)
+ mReq->req.status = -1;
+
+ mReq->req.actual = mReq->ptr->token & TD_TOTAL_BYTES;
+ mReq->req.actual >>= ffs_nr(TD_TOTAL_BYTES);
+ mReq->req.actual = mReq->req.length - mReq->req.actual;
+ mReq->req.actual = mReq->req.status ? 0 : mReq->req.actual;
+
+ return mReq->req.actual;
+}
+
+/**
+ * _ep_nuke: dequeues all endpoint requests
+ * @mEp: endpoint
+ *
+ * This function returns an error code
+ * Caller must hold lock
+ */
+static int _ep_nuke(struct ci13xxx_ep *mEp)
+__releases(mEp->lock)
+__acquires(mEp->lock)
+{
+ trace("%p", mEp);
+
+ if (mEp == NULL)
+ return -EINVAL;
+
+ hw_ep_flush(mEp->num, mEp->dir);
+
+ while (!list_empty(&mEp->qh[mEp->dir].queue)) {
+
+ /* pop oldest request */
+ struct ci13xxx_req *mReq = \
+ list_entry(mEp->qh[mEp->dir].queue.next,
+ struct ci13xxx_req, queue);
+ list_del_init(&mReq->queue);
+ mReq->req.status = -ESHUTDOWN;
+
+ if (!mReq->req.no_interrupt && mReq->req.complete != NULL) {
+ spin_unlock(mEp->lock);
+ mReq->req.complete(&mEp->ep, &mReq->req);
+ spin_lock(mEp->lock);
+ }
+ }
+ return 0;
+}
+
+/**
+ * _gadget_stop_activity: stops all USB activity, flushes & disables all endpts
+ * @gadget: gadget
+ *
+ * This function returns an error code
+ * Caller must hold lock
+ */
+static int _gadget_stop_activity(struct usb_gadget *gadget)
+__releases(udc->lock)
+__acquires(udc->lock)
+{
+ struct usb_ep *ep;
+ struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+ struct ci13xxx_ep *mEp = container_of(gadget->ep0,
+ struct ci13xxx_ep, ep);
+
+ trace("%p", gadget);
+
+ if (gadget == NULL)
+ return -EINVAL;
+
+ spin_unlock(udc->lock);
+
+ /* flush all endpoints */
+ gadget_for_each_ep(ep, gadget) {
+ usb_ep_fifo_flush(ep);
+ }
+ usb_ep_fifo_flush(gadget->ep0);
+
+ udc->driver->disconnect(gadget);
+
+ /* make sure to disable all endpoints */
+ gadget_for_each_ep(ep, gadget) {
+ usb_ep_disable(ep);
+ }
+ usb_ep_disable(gadget->ep0);
+
+ if (mEp->status != NULL) {
+ usb_ep_free_request(gadget->ep0, mEp->status);
+ mEp->status = NULL;
+ }
+
+ spin_lock(udc->lock);
+
+ return 0;
+}
+
+/******************************************************************************
+ * ISR block
+ *****************************************************************************/
+/**
+ * isr_reset_handler: USB reset interrupt handler
+ * @udc: UDC device
+ *
+ * This function resets USB engine after a bus reset occurred
+ */
+static void isr_reset_handler(struct ci13xxx *udc)
+__releases(udc->lock)
+__acquires(udc->lock)
+{
+ struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[0];
+ int retval;
+
+ trace("%p", udc);
+
+ if (udc == NULL) {
+ err("EINVAL");
+ return;
+ }
+
+ dbg_event(0xFF, "BUS RST", 0);
+
+ retval = _gadget_stop_activity(&udc->gadget);
+ if (retval)
+ goto done;
+
+ retval = hw_usb_reset();
+ if (retval)
+ goto done;
+
+ spin_unlock(udc->lock);
+ retval = usb_ep_enable(&mEp->ep, &ctrl_endpt_desc);
+ if (!retval) {
+ mEp->status = usb_ep_alloc_request(&mEp->ep, GFP_KERNEL);
+ if (mEp->status == NULL) {
+ usb_ep_disable(&mEp->ep);
+ retval = -ENOMEM;
+ }
+ }
+ spin_lock(udc->lock);
+
+ done:
+ if (retval)
+ err("error: %i", retval);
+}
+
+/**
+ * isr_get_status_complete: get_status request complete function
+ * @ep: endpoint
+ * @req: request handled
+ *
+ * Caller must release lock
+ */
+static void isr_get_status_complete(struct usb_ep *ep, struct usb_request *req)
+{
+ trace("%p, %p", ep, req);
+
+ if (ep == NULL || req == NULL) {
+ err("EINVAL");
+ return;
+ }
+
+ kfree(req->buf);
+ usb_ep_free_request(ep, req);
+}
+
+/**
+ * isr_get_status_response: get_status request response
+ * @ep: endpoint
+ * @setup: setup request packet
+ *
+ * This function returns an error code
+ */
+static int isr_get_status_response(struct ci13xxx_ep *mEp,
+ struct usb_ctrlrequest *setup)
+__releases(mEp->lock)
+__acquires(mEp->lock)
+{
+ struct usb_request *req = NULL;
+ gfp_t gfp_flags = GFP_ATOMIC;
+ int dir, num, retval;
+
+ trace("%p, %p", mEp, setup);
+
+ if (mEp == NULL || setup == NULL)
+ return -EINVAL;
+
+ spin_unlock(mEp->lock);
+ req = usb_ep_alloc_request(&mEp->ep, gfp_flags);
+ spin_lock(mEp->lock);
+ if (req == NULL)
+ return -ENOMEM;
+
+ req->complete = isr_get_status_complete;
+ req->length = 2;
+ req->buf = kzalloc(req->length, gfp_flags);
+ if (req->buf == NULL) {
+ retval = -ENOMEM;
+ goto err_free_req;
+ }
+
+ if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
+ /* TODO: D1 - Remote Wakeup; D0 - Self Powered */
+ retval = 0;
+ } else if ((setup->bRequestType & USB_RECIP_MASK) \
+ == USB_RECIP_ENDPOINT) {
+ dir = (le16_to_cpu(setup->wIndex) & USB_ENDPOINT_DIR_MASK) ?
+ TX : RX;
+ num = le16_to_cpu(setup->wIndex) & USB_ENDPOINT_NUMBER_MASK;
+ *((u16 *)req->buf) = hw_ep_get_halt(num, dir);
+ }
+ /* else do nothing; reserved for future use */
+
+ spin_unlock(mEp->lock);
+ retval = usb_ep_queue(&mEp->ep, req, gfp_flags);
+ spin_lock(mEp->lock);
+ if (retval)
+ goto err_free_buf;
+
+ return 0;
+
+ err_free_buf:
+ kfree(req->buf);
+ err_free_req:
+ spin_unlock(mEp->lock);
+ usb_ep_free_request(&mEp->ep, req);
+ spin_lock(mEp->lock);
+ return retval;
+}
+
+/**
+ * isr_setup_status_phase: queues the status phase of a setup transation
+ * @mEp: endpoint
+ *
+ * This function returns an error code
+ */
+static int isr_setup_status_phase(struct ci13xxx_ep *mEp)
+__releases(mEp->lock)
+__acquires(mEp->lock)
+{
+ int retval;
+
+ trace("%p", mEp);
+
+ /* mEp is always valid & configured */
+
+ if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
+ mEp->dir = (mEp->dir == TX) ? RX : TX;
+
+ mEp->status->no_interrupt = 1;
+
+ spin_unlock(mEp->lock);
+ retval = usb_ep_queue(&mEp->ep, mEp->status, GFP_ATOMIC);
+ spin_lock(mEp->lock);
+
+ return retval;
+}
+
+/**
+ * isr_tr_complete_low: transaction complete low level handler
+ * @mEp: endpoint
+ *
+ * This function returns an error code
+ * Caller must hold lock
+ */
+static int isr_tr_complete_low(struct ci13xxx_ep *mEp)
+__releases(mEp->lock)
+__acquires(mEp->lock)
+{
+ struct ci13xxx_req *mReq;
+ int retval;
+
+ trace("%p", mEp);
+
+ if (list_empty(&mEp->qh[mEp->dir].queue))
+ return -EINVAL;
+
+ /* pop oldest request */
+ mReq = list_entry(mEp->qh[mEp->dir].queue.next,
+ struct ci13xxx_req, queue);
+ list_del_init(&mReq->queue);
+
+ retval = _hardware_dequeue(mEp, mReq);
+ if (retval < 0) {
+ dbg_event(_usb_addr(mEp), "DONE", retval);
+ goto done;
+ }
+
+ dbg_done(_usb_addr(mEp), mReq->ptr->token, retval);
+
+ if (!mReq->req.no_interrupt && mReq->req.complete != NULL) {
+ spin_unlock(mEp->lock);
+ mReq->req.complete(&mEp->ep, &mReq->req);
+ spin_lock(mEp->lock);
+ }
+
+ if (!list_empty(&mEp->qh[mEp->dir].queue)) {
+ mReq = list_entry(mEp->qh[mEp->dir].queue.next,
+ struct ci13xxx_req, queue);
+ _hardware_enqueue(mEp, mReq);
+ }
+
+ done:
+ return retval;
+}
+
+/**
+ * isr_tr_complete_handler: transaction complete interrupt handler
+ * @udc: UDC descriptor
+ *
+ * This function handles traffic events
+ */
+static void isr_tr_complete_handler(struct ci13xxx *udc)
+__releases(udc->lock)
+__acquires(udc->lock)
+{
+ unsigned i;
+
+ trace("%p", udc);
+
+ if (udc == NULL) {
+ err("EINVAL");
+ return;
+ }
+
+ for (i = 0; i < hw_ep_max; i++) {
+ struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+ int type, num, err = -EINVAL;
+ struct usb_ctrlrequest req;
+
+
+ if (mEp->desc == NULL)
+ continue; /* not configured */
+
+ if ((mEp->dir == RX && hw_test_and_clear_complete(i)) ||
+ (mEp->dir == TX && hw_test_and_clear_complete(i + 16))) {
+ err = isr_tr_complete_low(mEp);
+ if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
+ if (err > 0) /* needs status phase */
+ err = isr_setup_status_phase(mEp);
+ if (err < 0) {
+ dbg_event(_usb_addr(mEp),
+ "ERROR", err);
+ spin_unlock(udc->lock);
+ if (usb_ep_set_halt(&mEp->ep))
+ err("error: ep_set_halt");
+ spin_lock(udc->lock);
+ }
+ }
+ }
+
+ if (mEp->type != USB_ENDPOINT_XFER_CONTROL ||
+ !hw_test_and_clear_setup_status(i))
+ continue;
+
+ if (i != 0) {
+ warn("ctrl traffic received at endpoint");
+ continue;
+ }
+
+ /* read_setup_packet */
+ do {
+ hw_test_and_set_setup_guard();
+ memcpy(&req, &mEp->qh[RX].ptr->setup, sizeof(req));
+ } while (!hw_test_and_clear_setup_guard());
+
+ type = req.bRequestType;
+
+ mEp->dir = (type & USB_DIR_IN) ? TX : RX;
+
+ dbg_setup(_usb_addr(mEp), &req);
+
+ switch (req.bRequest) {
+ case USB_REQ_CLEAR_FEATURE:
+ if (type != (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
+ le16_to_cpu(req.wValue) != USB_ENDPOINT_HALT)
+ goto delegate;
+ if (req.wLength != 0)
+ break;
+ num = le16_to_cpu(req.wIndex);
+ num &= USB_ENDPOINT_NUMBER_MASK;
+ if (!udc->ci13xxx_ep[num].wedge) {
+ spin_unlock(udc->lock);
+ err = usb_ep_clear_halt(
+ &udc->ci13xxx_ep[num].ep);
+ spin_lock(udc->lock);
+ if (err)
+ break;
+ }
+ err = isr_setup_status_phase(mEp);
+ break;
+ case USB_REQ_GET_STATUS:
+ if (type != (USB_DIR_IN|USB_RECIP_DEVICE) &&
+ type != (USB_DIR_IN|USB_RECIP_ENDPOINT) &&
+ type != (USB_DIR_IN|USB_RECIP_INTERFACE))
+ goto delegate;
+ if (le16_to_cpu(req.wLength) != 2 ||
+ le16_to_cpu(req.wValue) != 0)
+ break;
+ err = isr_get_status_response(mEp, &req);
+ break;
+ case USB_REQ_SET_ADDRESS:
+ if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
+ goto delegate;
+ if (le16_to_cpu(req.wLength) != 0 ||
+ le16_to_cpu(req.wIndex) != 0)
+ break;
+ err = hw_usb_set_address((u8)le16_to_cpu(req.wValue));
+ if (err)
+ break;
+ err = isr_setup_status_phase(mEp);
+ break;
+ case USB_REQ_SET_FEATURE:
+ if (type != (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
+ le16_to_cpu(req.wValue) != USB_ENDPOINT_HALT)
+ goto delegate;
+ if (req.wLength != 0)
+ break;
+ num = le16_to_cpu(req.wIndex);
+ num &= USB_ENDPOINT_NUMBER_MASK;
+
+ spin_unlock(udc->lock);
+ err = usb_ep_set_halt(&udc->ci13xxx_ep[num].ep);
+ spin_lock(udc->lock);
+ if (err)
+ break;
+ err = isr_setup_status_phase(mEp);
+ break;
+ default:
+delegate:
+ if (req.wLength == 0) /* no data phase */
+ mEp->dir = TX;
+
+ spin_unlock(udc->lock);
+ err = udc->driver->setup(&udc->gadget, &req);
+ spin_lock(udc->lock);
+ break;
+ }
+
+ if (err < 0) {
+ dbg_event(_usb_addr(mEp), "ERROR", err);
+
+ spin_unlock(udc->lock);
+ if (usb_ep_set_halt(&mEp->ep))
+ err("error: ep_set_halt");
+ spin_lock(udc->lock);
+ }
+ }
+}
+
+/******************************************************************************
+ * ENDPT block
+ *****************************************************************************/
+/**
+ * ep_enable: configure endpoint, making it usable
+ *
+ * Check usb_ep_enable() at "usb_gadget.h" for details
+ */
+static int ep_enable(struct usb_ep *ep,
+ const struct usb_endpoint_descriptor *desc)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ int direction, retval = 0;
+ unsigned long flags;
+
+ trace("%p, %p", ep, desc);
+
+ if (ep == NULL || desc == NULL)
+ return -EINVAL;
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+ /* only internal SW should enable ctrl endpts */
+
+ mEp->desc = desc;
+
+ if (!list_empty(&mEp->qh[mEp->dir].queue))
+ warn("enabling a non-empty endpoint!");
+
+ mEp->dir = (desc->bEndpointAddress & USB_ENDPOINT_DIR_MASK) ? TX : RX;
+ mEp->num = desc->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
+ mEp->type = desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK;
+
+ mEp->ep.maxpacket = __constant_le16_to_cpu(desc->wMaxPacketSize);
+
+ direction = mEp->dir;
+ do {
+ dbg_event(_usb_addr(mEp), "ENABLE", 0);
+
+ if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
+ mEp->qh[mEp->dir].ptr->cap |= QH_IOS;
+ else if (mEp->type == USB_ENDPOINT_XFER_ISOC)
+ mEp->qh[mEp->dir].ptr->cap &= ~QH_MULT;
+ else
+ mEp->qh[mEp->dir].ptr->cap &= ~QH_ZLT;
+
+ mEp->qh[mEp->dir].ptr->cap |=
+ (mEp->ep.maxpacket << ffs_nr(QH_MAX_PKT)) & QH_MAX_PKT;
+ mEp->qh[mEp->dir].ptr->td.next |= TD_TERMINATE; /* needed? */
+
+ retval |= hw_ep_enable(mEp->num, mEp->dir, mEp->type);
+
+ if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
+ mEp->dir = (mEp->dir == TX) ? RX : TX;
+
+ } while (mEp->dir != direction);
+
+ spin_unlock_irqrestore(mEp->lock, flags);
+ return retval;
+}
+
+/**
+ * ep_disable: endpoint is no longer usable
+ *
+ * Check usb_ep_disable() at "usb_gadget.h" for details
+ */
+static int ep_disable(struct usb_ep *ep)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ int direction, retval = 0;
+ unsigned long flags;
+
+ trace("%p", ep);
+
+ if (ep == NULL)
+ return -EINVAL;
+ else if (mEp->desc == NULL)
+ return -EBUSY;
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+ /* only internal SW should disable ctrl endpts */
+
+ direction = mEp->dir;
+ do {
+ dbg_event(_usb_addr(mEp), "DISABLE", 0);
+
+ retval |= _ep_nuke(mEp);
+ retval |= hw_ep_disable(mEp->num, mEp->dir);
+
+ if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
+ mEp->dir = (mEp->dir == TX) ? RX : TX;
+
+ } while (mEp->dir != direction);
+
+ mEp->desc = NULL;
+
+ spin_unlock_irqrestore(mEp->lock, flags);
+ return retval;
+}
+
+/**
+ * ep_alloc_request: allocate a request object to use with this endpoint
+ *
+ * Check usb_ep_alloc_request() at "usb_gadget.h" for details
+ */
+static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci13xxx_req *mReq = NULL;
+ unsigned long flags;
+
+ trace("%p, %i", ep, gfp_flags);
+
+ if (ep == NULL) {
+ err("EINVAL");
+ return NULL;
+ }
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+ mReq = kzalloc(sizeof(struct ci13xxx_req), gfp_flags);
+ if (mReq != NULL) {
+ INIT_LIST_HEAD(&mReq->queue);
+
+ mReq->ptr = dma_pool_alloc(mEp->td_pool, gfp_flags,
+ &mReq->dma);
+ if (mReq->ptr == NULL) {
+ kfree(mReq);
+ mReq = NULL;
+ }
+ }
+
+ dbg_event(_usb_addr(mEp), "ALLOC", mReq == NULL);
+
+ spin_unlock_irqrestore(mEp->lock, flags);
+
+ return (mReq == NULL) ? NULL : &mReq->req;
+}
+
+/**
+ * ep_free_request: frees a request object
+ *
+ * Check usb_ep_free_request() at "usb_gadget.h" for details
+ */
+static void ep_free_request(struct usb_ep *ep, struct usb_request *req)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
+ unsigned long flags;
+
+ trace("%p, %p", ep, req);
+
+ if (ep == NULL || req == NULL) {
+ err("EINVAL");
+ return;
+ } else if (!list_empty(&mReq->queue)) {
+ err("EBUSY");
+ return;
+ }
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+ if (mReq->ptr)
+ dma_pool_free(mEp->td_pool, mReq->ptr, mReq->dma);
+ kfree(mReq);
+
+ dbg_event(_usb_addr(mEp), "FREE", 0);
+
+ spin_unlock_irqrestore(mEp->lock, flags);
+}
+
+/**
+ * ep_queue: queues (submits) an I/O request to an endpoint
+ *
+ * Check usb_ep_queue()* at usb_gadget.h" for details
+ */
+static int ep_queue(struct usb_ep *ep, struct usb_request *req,
+ gfp_t __maybe_unused gfp_flags)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
+ int retval = 0;
+ unsigned long flags;
+
+ trace("%p, %p, %X", ep, req, gfp_flags);
+
+ if (ep == NULL || req == NULL || mEp->desc == NULL)
+ return -EINVAL;
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+ if (mEp->type == USB_ENDPOINT_XFER_CONTROL &&
+ !list_empty(&mEp->qh[mEp->dir].queue)) {
+ _ep_nuke(mEp);
+ retval = -EOVERFLOW;
+ warn("endpoint ctrl %X nuked", _usb_addr(mEp));
+ }
+
+ /* first nuke then test link, e.g. previous status has not sent */
+ if (!list_empty(&mReq->queue)) {
+ retval = -EBUSY;
+ err("request already in queue");
+ goto done;
+ }
+
+ if (req->length > (4 * PAGE_SIZE)) {
+ req->length = (4 * PAGE_SIZE);
+ retval = -EMSGSIZE;
+ warn("request length truncated");
+ }
+
+ dbg_queue(_usb_addr(mEp), req, retval);
+
+ /* push request */
+ mReq->req.status = -EINPROGRESS;
+ mReq->req.actual = 0;
+ list_add_tail(&mReq->queue, &mEp->qh[mEp->dir].queue);
+
+ retval = _hardware_enqueue(mEp, mReq);
+ if (retval == -EALREADY || retval == -EBUSY) {
+ dbg_event(_usb_addr(mEp), "QUEUE", retval);
+ retval = 0;
+ }
+
+ done:
+ spin_unlock_irqrestore(mEp->lock, flags);
+ return retval;
+}
+
+/**
+ * ep_dequeue: dequeues (cancels, unlinks) an I/O request from an endpoint
+ *
+ * Check usb_ep_dequeue() at "usb_gadget.h" for details
+ */
+static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
+ unsigned long flags;
+
+ trace("%p, %p", ep, req);
+
+ if (ep == NULL || req == NULL || mEp->desc == NULL ||
+ list_empty(&mReq->queue) || list_empty(&mEp->qh[mEp->dir].queue))
+ return -EINVAL;
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+ dbg_event(_usb_addr(mEp), "DEQUEUE", 0);
+
+ if (mReq->req.status == -EALREADY)
+ _hardware_dequeue(mEp, mReq);
+
+ /* pop request */
+ list_del_init(&mReq->queue);
+ req->status = -ECONNRESET;
+
+ if (!mReq->req.no_interrupt && mReq->req.complete != NULL) {
+ spin_unlock(mEp->lock);
+ mReq->req.complete(&mEp->ep, &mReq->req);
+ spin_lock(mEp->lock);
+ }
+
+ spin_unlock_irqrestore(mEp->lock, flags);
+ return 0;
+}
+
+/**
+ * ep_set_halt: sets the endpoint halt feature
+ *
+ * Check usb_ep_set_halt() at "usb_gadget.h" for details
+ */
+static int ep_set_halt(struct usb_ep *ep, int value)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ int direction, retval = 0;
+ unsigned long flags;
+
+ trace("%p, %i", ep, value);
+
+ if (ep == NULL || mEp->desc == NULL)
+ return -EINVAL;
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+#ifndef STALL_IN
+ /* g_file_storage MS compliant but g_zero fails chapter 9 compliance */
+ if (value && mEp->type == USB_ENDPOINT_XFER_BULK && mEp->dir == TX &&
+ !list_empty(&mEp->qh[mEp->dir].queue)) {
+ spin_unlock_irqrestore(mEp->lock, flags);
+ return -EAGAIN;
+ }
+#endif
+
+ direction = mEp->dir;
+ do {
+ dbg_event(_usb_addr(mEp), "HALT", value);
+ retval |= hw_ep_set_halt(mEp->num, mEp->dir, value);
+
+ if (!value)
+ mEp->wedge = 0;
+
+ if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
+ mEp->dir = (mEp->dir == TX) ? RX : TX;
+
+ } while (mEp->dir != direction);
+
+ spin_unlock_irqrestore(mEp->lock, flags);
+ return retval;
+}
+
+/**
+ * ep_set_wedge: sets the halt feature and ignores clear requests
+ *
+ * Check usb_ep_set_wedge() at "usb_gadget.h" for details
+ */
+static int ep_set_wedge(struct usb_ep *ep)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ unsigned long flags;
+
+ trace("%p", ep);
+
+ if (ep == NULL || mEp->desc == NULL)
+ return -EINVAL;
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+ dbg_event(_usb_addr(mEp), "WEDGE", 0);
+ mEp->wedge = 1;
+
+ spin_unlock_irqrestore(mEp->lock, flags);
+
+ return usb_ep_set_halt(ep);
+}
+
+/**
+ * ep_fifo_flush: flushes contents of a fifo
+ *
+ * Check usb_ep_fifo_flush() at "usb_gadget.h" for details
+ */
+static void ep_fifo_flush(struct usb_ep *ep)
+{
+ struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ unsigned long flags;
+
+ trace("%p", ep);
+
+ if (ep == NULL) {
+ err("%02X: -EINVAL", _usb_addr(mEp));
+ return;
+ }
+
+ spin_lock_irqsave(mEp->lock, flags);
+
+ dbg_event(_usb_addr(mEp), "FFLUSH", 0);
+ hw_ep_flush(mEp->num, mEp->dir);
+
+ spin_unlock_irqrestore(mEp->lock, flags);
+}
+
+/**
+ * Endpoint-specific part of the API to the USB controller hardware
+ * Check "usb_gadget.h" for details
+ */
+static const struct usb_ep_ops usb_ep_ops = {
+ .enable = ep_enable,
+ .disable = ep_disable,
+ .alloc_request = ep_alloc_request,
+ .free_request = ep_free_request,
+ .queue = ep_queue,
+ .dequeue = ep_dequeue,
+ .set_halt = ep_set_halt,
+ .set_wedge = ep_set_wedge,
+ .fifo_flush = ep_fifo_flush,
+};
+
+/******************************************************************************
+ * GADGET block
+ *****************************************************************************/
+/**
+ * Device operations part of the API to the USB controller hardware,
+ * which don't involve endpoints (or i/o)
+ * Check "usb_gadget.h" for details
+ */
+static const struct usb_gadget_ops usb_gadget_ops;
+
+/**
+ * usb_gadget_register_driver: register a gadget driver
+ *
+ * Check usb_gadget_register_driver() at "usb_gadget.h" for details
+ * Interrupts are enabled here
+ */
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+ struct ci13xxx *udc = _udc;
+ unsigned long i, k, flags;
+ int retval = -ENOMEM;
+
+ trace("%p", driver);
+
+ if (driver == NULL ||
+ driver->bind == NULL ||
+ driver->unbind == NULL ||
+ driver->setup == NULL ||
+ driver->disconnect == NULL ||
+ driver->suspend == NULL ||
+ driver->resume == NULL)
+ return -EINVAL;
+ else if (udc == NULL)
+ return -ENODEV;
+ else if (udc->driver != NULL)
+ return -EBUSY;
+
+ /* alloc resources */
+ udc->qh_pool = dma_pool_create("ci13xxx_qh", &udc->gadget.dev,
+ sizeof(struct ci13xxx_qh),
+ 64, PAGE_SIZE);
+ if (udc->qh_pool == NULL)
+ return -ENOMEM;
+
+ udc->td_pool = dma_pool_create("ci13xxx_td", &udc->gadget.dev,
+ sizeof(struct ci13xxx_td),
+ 64, PAGE_SIZE);
+ if (udc->td_pool == NULL) {
+ dma_pool_destroy(udc->qh_pool);
+ udc->qh_pool = NULL;
+ return -ENOMEM;
+ }
+
+ spin_lock_irqsave(udc->lock, flags);
+
+ info("hw_ep_max = %d", hw_ep_max);
+
+ udc->driver = driver;
+ udc->gadget.ops = NULL;
+ udc->gadget.dev.driver = NULL;
+
+ retval = 0;
+ for (i = 0; i < hw_ep_max; i++) {
+ struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+
+ scnprintf(mEp->name, sizeof(mEp->name), "ep%i", (int)i);
+
+ mEp->lock = udc->lock;
+ mEp->device = &udc->gadget.dev;
+ mEp->td_pool = udc->td_pool;
+
+ mEp->ep.name = mEp->name;
+ mEp->ep.ops = &usb_ep_ops;
+ mEp->ep.maxpacket = CTRL_PAYLOAD_MAX;
+
+ /* this allocation cannot be random */
+ for (k = RX; k <= TX; k++) {
+ INIT_LIST_HEAD(&mEp->qh[k].queue);
+ mEp->qh[k].ptr = dma_pool_alloc(udc->qh_pool,
+ GFP_KERNEL,
+ &mEp->qh[k].dma);
+ if (mEp->qh[k].ptr == NULL)
+ retval = -ENOMEM;
+ else
+ memset(mEp->qh[k].ptr, 0,
+ sizeof(*mEp->qh[k].ptr));
+ }
+ if (i == 0)
+ udc->gadget.ep0 = &mEp->ep;
+ else
+ list_add_tail(&mEp->ep.ep_list, &udc->gadget.ep_list);
+ }
+ if (retval)
+ goto done;
+
+ /* bind gadget */
+ driver->driver.bus = NULL;
+ udc->gadget.ops = &usb_gadget_ops;
+ udc->gadget.dev.driver = &driver->driver;
+
+ spin_unlock_irqrestore(udc->lock, flags);
+ retval = driver->bind(&udc->gadget); /* MAY SLEEP */
+ spin_lock_irqsave(udc->lock, flags);
+
+ if (retval) {
+ udc->gadget.ops = NULL;
+ udc->gadget.dev.driver = NULL;
+ goto done;
+ }
+
+ retval = hw_device_state(udc->ci13xxx_ep[0].qh[RX].dma);
+
+ done:
+ spin_unlock_irqrestore(udc->lock, flags);
+ if (retval)
+ usb_gadget_unregister_driver(driver);
+ return retval;
+}
+EXPORT_SYMBOL(usb_gadget_register_driver);
+
+/**
+ * usb_gadget_unregister_driver: unregister a gadget driver
+ *
+ * Check usb_gadget_unregister_driver() at "usb_gadget.h" for details
+ */
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct ci13xxx *udc = _udc;
+ unsigned long i, k, flags;
+
+ trace("%p", driver);
+
+ if (driver == NULL ||
+ driver->bind == NULL ||
+ driver->unbind == NULL ||
+ driver->setup == NULL ||
+ driver->disconnect == NULL ||
+ driver->suspend == NULL ||
+ driver->resume == NULL ||
+ driver != udc->driver)
+ return -EINVAL;
+
+ spin_lock_irqsave(udc->lock, flags);
+
+ hw_device_state(0);
+
+ /* unbind gadget */
+ if (udc->gadget.ops != NULL) {
+ _gadget_stop_activity(&udc->gadget);
+
+ spin_unlock_irqrestore(udc->lock, flags);
+ driver->unbind(&udc->gadget); /* MAY SLEEP */
+ spin_lock_irqsave(udc->lock, flags);
+
+ udc->gadget.ops = NULL;
+ udc->gadget.dev.driver = NULL;
+ }
+
+ /* free resources */
+ for (i = 0; i < hw_ep_max; i++) {
+ struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+
+ if (i == 0)
+ udc->gadget.ep0 = NULL;
+ else if (!list_empty(&mEp->ep.ep_list))
+ list_del_init(&mEp->ep.ep_list);
+
+ for (k = RX; k <= TX; k++)
+ if (mEp->qh[k].ptr != NULL)
+ dma_pool_free(udc->qh_pool,
+ mEp->qh[k].ptr, mEp->qh[k].dma);
+ }
+
+ udc->driver = NULL;
+
+ spin_unlock_irqrestore(udc->lock, flags);
+
+ if (udc->td_pool != NULL) {
+ dma_pool_destroy(udc->td_pool);
+ udc->td_pool = NULL;
+ }
+ if (udc->qh_pool != NULL) {
+ dma_pool_destroy(udc->qh_pool);
+ udc->qh_pool = NULL;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+/******************************************************************************
+ * BUS block
+ *****************************************************************************/
+/**
+ * udc_irq: global interrupt handler
+ *
+ * This function returns IRQ_HANDLED if the IRQ has been handled
+ * It locks access to registers
+ */
+static irqreturn_t udc_irq(void)
+{
+ struct ci13xxx *udc = _udc;
+ irqreturn_t retval;
+ u32 intr;
+
+ trace();
+
+ if (udc == NULL) {
+ err("ENODEV");
+ return IRQ_HANDLED;
+ }
+
+ spin_lock(udc->lock);
+ intr = hw_test_and_clear_intr_active();
+ if (intr) {
+ isr_statistics.hndl.buf[isr_statistics.hndl.idx++] = intr;
+ isr_statistics.hndl.idx &= ISR_MASK;
+ isr_statistics.hndl.cnt++;
+
+ /* order defines priority - do NOT change it */
+ if (USBi_URI & intr) {
+ isr_statistics.uri++;
+ isr_reset_handler(udc);
+ }
+ if (USBi_PCI & intr) {
+ isr_statistics.pci++;
+ udc->gadget.speed = hw_port_is_high_speed() ?
+ USB_SPEED_HIGH : USB_SPEED_FULL;
+ }
+ if (USBi_UEI & intr)
+ isr_statistics.uei++;
+ if (USBi_UI & intr) {
+ isr_statistics.ui++;
+ isr_tr_complete_handler(udc);
+ }
+ if (USBi_SLI & intr)
+ isr_statistics.sli++;
+ retval = IRQ_HANDLED;
+ } else {
+ isr_statistics.none++;
+ retval = IRQ_NONE;
+ }
+ spin_unlock(udc->lock);
+
+ return retval;
+}
+
+/**
+ * udc_release: driver release function
+ * @dev: device
+ *
+ * Currently does nothing
+ */
+static void udc_release(struct device *dev)
+{
+ trace("%p", dev);
+
+ if (dev == NULL)
+ err("EINVAL");
+}
+
+/**
+ * udc_probe: parent probe must call this to initialize UDC
+ * @dev: parent device
+ * @regs: registers base address
+ * @name: driver name
+ *
+ * This function returns an error code
+ * No interrupts active, the IRQ has not been requested yet
+ * Kernel assumes 32-bit DMA operations by default, no need to dma_set_mask
+ */
+static int udc_probe(struct device *dev, void __iomem *regs, const char *name)
+{
+ struct ci13xxx *udc;
+ int retval = 0;
+
+ trace("%p, %p, %p", dev, regs, name);
+
+ if (dev == NULL || regs == NULL || name == NULL)
+ return -EINVAL;
+
+ udc = kzalloc(sizeof(struct ci13xxx), GFP_KERNEL);
+ if (udc == NULL)
+ return -ENOMEM;
+
+ udc->lock = &udc_lock;
+
+ retval = hw_device_reset(regs);
+ if (retval)
+ goto done;
+
+ udc->gadget.ops = NULL;
+ udc->gadget.speed = USB_SPEED_UNKNOWN;
+ udc->gadget.is_dualspeed = 1;
+ udc->gadget.is_otg = 0;
+ udc->gadget.name = name;
+
+ INIT_LIST_HEAD(&udc->gadget.ep_list);
+ udc->gadget.ep0 = NULL;
+
+ strcpy(udc->gadget.dev.bus_id, "gadget");
+ udc->gadget.dev.dma_mask = dev->dma_mask;
+ udc->gadget.dev.parent = dev;
+ udc->gadget.dev.release = udc_release;
+
+ retval = device_register(&udc->gadget.dev);
+ if (retval)
+ goto done;
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+ retval = dbg_create_files(&udc->gadget.dev);
+#endif
+ if (retval) {
+ device_unregister(&udc->gadget.dev);
+ goto done;
+ }
+
+ _udc = udc;
+ return retval;
+
+ done:
+ err("error = %i", retval);
+ kfree(udc);
+ _udc = NULL;
+ return retval;
+}
+
+/**
+ * udc_remove: parent remove must call this to remove UDC
+ *
+ * No interrupts active, the IRQ has been released
+ */
+static void udc_remove(void)
+{
+ struct ci13xxx *udc = _udc;
+
+ if (udc == NULL) {
+ err("EINVAL");
+ return;
+ }
+
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+ dbg_remove_files(&udc->gadget.dev);
+#endif
+ device_unregister(&udc->gadget.dev);
+
+ kfree(udc);
+ _udc = NULL;
+}
+
+/******************************************************************************
+ * PCI block
+ *****************************************************************************/
+/**
+ * ci13xxx_pci_irq: interrut handler
+ * @irq: irq number
+ * @pdev: USB Device Controller interrupt source
+ *
+ * This function returns IRQ_HANDLED if the IRQ has been handled
+ * This is an ISR don't trace, use attribute interface instead
+ */
+static irqreturn_t ci13xxx_pci_irq(int irq, void *pdev)
+{
+ if (irq == 0) {
+ dev_err(&((struct pci_dev *)pdev)->dev, "Invalid IRQ0 usage!");
+ return IRQ_HANDLED;
+ }
+ return udc_irq();
+}
+
+/**
+ * ci13xxx_pci_probe: PCI probe
+ * @pdev: USB device controller being probed
+ * @id: PCI hotplug ID connecting controller to UDC framework
+ *
+ * This function returns an error code
+ * Allocates basic PCI resources for this USB device controller, and then
+ * invokes the udc_probe() method to start the UDC associated with it
+ */
+static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ void __iomem *regs = NULL;
+ int retval = 0;
+
+ if (id == NULL)
+ return -EINVAL;
+
+ retval = pci_enable_device(pdev);
+ if (retval)
+ goto done;
+
+ if (!pdev->irq) {
+ dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!");
+ retval = -ENODEV;
+ goto disable_device;
+ }
+
+ retval = pci_request_regions(pdev, UDC_DRIVER_NAME);
+ if (retval)
+ goto disable_device;
+
+ /* BAR 0 holds all the registers */
+ regs = pci_iomap(pdev, 0, 0);
+ if (!regs) {
+ dev_err(&pdev->dev, "Error mapping memory!");
+ retval = -EFAULT;
+ goto release_regions;
+ }
+ pci_set_drvdata(pdev, (__force void *)regs);
+
+ pci_set_master(pdev);
+ pci_try_set_mwi(pdev);
+
+ retval = udc_probe(&pdev->dev, regs, UDC_DRIVER_NAME);
+ if (retval)
+ goto iounmap;
+
+ /* our device does not have MSI capability */
+
+ retval = request_irq(pdev->irq, ci13xxx_pci_irq, IRQF_SHARED,
+ UDC_DRIVER_NAME, pdev);
+ if (retval)
+ goto gadget_remove;
+
+ return 0;
+
+ gadget_remove:
+ udc_remove();
+ iounmap:
+ pci_iounmap(pdev, regs);
+ release_regions:
+ pci_release_regions(pdev);
+ disable_device:
+ pci_disable_device(pdev);
+ done:
+ return retval;
+}
+
+/**
+ * ci13xxx_pci_remove: PCI remove
+ * @pdev: USB Device Controller being removed
+ *
+ * Reverses the effect of ci13xxx_pci_probe(),
+ * first invoking the udc_remove() and then releases
+ * all PCI resources allocated for this USB device controller
+ */
+static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev)
+{
+ free_irq(pdev->irq, pdev);
+ udc_remove();
+ pci_iounmap(pdev, (__force void __iomem *)pci_get_drvdata(pdev));
+ pci_release_regions(pdev);
+ pci_disable_device(pdev);
+}
+
+/**
+ * PCI device table
+ * PCI device structure
+ *
+ * Check "pci.h" for details
+ */
+static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = {
+ { PCI_DEVICE(0x153F, 0x1004) },
+ { PCI_DEVICE(0x153F, 0x1006) },
+ { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ }
+};
+MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table);
+
+static struct pci_driver ci13xxx_pci_driver = {
+ .name = UDC_DRIVER_NAME,
+ .id_table = ci13xxx_pci_id_table,
+ .probe = ci13xxx_pci_probe,
+ .remove = __devexit_p(ci13xxx_pci_remove),
+};
+
+/**
+ * ci13xxx_pci_init: module init
+ *
+ * Driver load
+ */
+static int __init ci13xxx_pci_init(void)
+{
+ return pci_register_driver(&ci13xxx_pci_driver);
+}
+module_init(ci13xxx_pci_init);
+
+/**
+ * ci13xxx_pci_exit: module exit
+ *
+ * Driver unload
+ */
+static void __exit ci13xxx_pci_exit(void)
+{
+ pci_unregister_driver(&ci13xxx_pci_driver);
+}
+module_exit(ci13xxx_pci_exit);
+
+MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>");
+MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller");
+MODULE_LICENSE("GPL");
+MODULE_VERSION("June 2008");
diff --git a/drivers/usb/gadget/ci13xxx_udc.h b/drivers/usb/gadget/ci13xxx_udc.h
new file mode 100644
index 000000000000..4026e9cede34
--- /dev/null
+++ b/drivers/usb/gadget/ci13xxx_udc.h
@@ -0,0 +1,195 @@
+/*
+ * ci13xxx_udc.h - structures, registers, and macros MIPS USB IP core
+ *
+ * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
+ *
+ * Author: David Lopo
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Description: MIPS USB IP core family device controller
+ * Structures, registers and logging macros
+ */
+
+#ifndef _CI13XXX_h_
+#define _CI13XXX_h_
+
+/******************************************************************************
+ * DEFINE
+ *****************************************************************************/
+#define ENDPT_MAX (16)
+#define CTRL_PAYLOAD_MAX (64)
+#define RX (0) /* similar to USB_DIR_OUT but can be used as an index */
+#define TX (1) /* similar to USB_DIR_IN but can be used as an index */
+
+/******************************************************************************
+ * STRUCTURES
+ *****************************************************************************/
+/* DMA layout of transfer descriptors */
+struct ci13xxx_td {
+ /* 0 */
+ u32 next;
+#define TD_TERMINATE BIT(0)
+ /* 1 */
+ u32 token;
+#define TD_STATUS (0x00FFUL << 0)
+#define TD_STATUS_TR_ERR BIT(3)
+#define TD_STATUS_DT_ERR BIT(5)
+#define TD_STATUS_HALTED BIT(6)
+#define TD_STATUS_ACTIVE BIT(7)
+#define TD_MULTO (0x0003UL << 10)
+#define TD_IOC BIT(15)
+#define TD_TOTAL_BYTES (0x7FFFUL << 16)
+ /* 2 */
+ u32 page[5];
+#define TD_CURR_OFFSET (0x0FFFUL << 0)
+#define TD_FRAME_NUM (0x07FFUL << 0)
+#define TD_RESERVED_MASK (0x0FFFUL << 0)
+} __attribute__ ((packed));
+
+/* DMA layout of queue heads */
+struct ci13xxx_qh {
+ /* 0 */
+ u32 cap;
+#define QH_IOS BIT(15)
+#define QH_MAX_PKT (0x07FFUL << 16)
+#define QH_ZLT BIT(29)
+#define QH_MULT (0x0003UL << 30)
+ /* 1 */
+ u32 curr;
+ /* 2 - 8 */
+ struct ci13xxx_td td;
+ /* 9 */
+ u32 RESERVED;
+ struct usb_ctrlrequest setup;
+} __attribute__ ((packed));
+
+/* Extension of usb_request */
+struct ci13xxx_req {
+ struct usb_request req;
+ unsigned map;
+ struct list_head queue;
+ struct ci13xxx_td *ptr;
+ dma_addr_t dma;
+};
+
+/* Extension of usb_ep */
+struct ci13xxx_ep {
+ struct usb_ep ep;
+ const struct usb_endpoint_descriptor *desc;
+ u8 dir;
+ u8 num;
+ u8 type;
+ char name[16];
+ struct {
+ struct list_head queue;
+ struct ci13xxx_qh *ptr;
+ dma_addr_t dma;
+ } qh[2];
+ struct usb_request *status;
+ int wedge;
+
+ /* global resources */
+ spinlock_t *lock;
+ struct device *device;
+ struct dma_pool *td_pool;
+};
+
+/* CI13XXX UDC descriptor & global resources */
+struct ci13xxx {
+ spinlock_t *lock; /* ctrl register bank access */
+
+ struct dma_pool *qh_pool; /* DMA pool for queue heads */
+ struct dma_pool *td_pool; /* DMA pool for transfer descs */
+
+ struct usb_gadget gadget; /* USB slave device */
+ struct ci13xxx_ep ci13xxx_ep[ENDPT_MAX]; /* extended endpts */
+
+ struct usb_gadget_driver *driver; /* 3rd party gadget driver */
+};
+
+/******************************************************************************
+ * REGISTERS
+ *****************************************************************************/
+/* register size */
+#define REG_BITS (32)
+
+/* HCCPARAMS */
+#define HCCPARAMS_LEN BIT(17)
+
+/* DCCPARAMS */
+#define DCCPARAMS_DEN (0x1F << 0)
+#define DCCPARAMS_DC BIT(7)
+
+/* TESTMODE */
+#define TESTMODE_FORCE BIT(0)
+
+/* USBCMD */
+#define USBCMD_RS BIT(0)
+#define USBCMD_RST BIT(1)
+#define USBCMD_SUTW BIT(13)
+
+/* USBSTS & USBINTR */
+#define USBi_UI BIT(0)
+#define USBi_UEI BIT(1)
+#define USBi_PCI BIT(2)
+#define USBi_URI BIT(6)
+#define USBi_SLI BIT(8)
+
+/* DEVICEADDR */
+#define DEVICEADDR_USBADRA BIT(24)
+#define DEVICEADDR_USBADR (0x7FUL << 25)
+
+/* PORTSC */
+#define PORTSC_SUSP BIT(7)
+#define PORTSC_HSP BIT(9)
+#define PORTSC_PTC (0x0FUL << 16)
+
+/* DEVLC */
+#define DEVLC_PSPD (0x03UL << 25)
+#define DEVLC_PSPD_HS (0x02UL << 25)
+
+/* USBMODE */
+#define USBMODE_CM (0x03UL << 0)
+#define USBMODE_CM_IDLE (0x00UL << 0)
+#define USBMODE_CM_DEVICE (0x02UL << 0)
+#define USBMODE_CM_HOST (0x03UL << 0)
+#define USBMODE_SLOM BIT(3)
+
+/* ENDPTCTRL */
+#define ENDPTCTRL_RXS BIT(0)
+#define ENDPTCTRL_RXT (0x03UL << 2)
+#define ENDPTCTRL_RXR BIT(6) /* reserved for port 0 */
+#define ENDPTCTRL_RXE BIT(7)
+#define ENDPTCTRL_TXS BIT(16)
+#define ENDPTCTRL_TXT (0x03UL << 18)
+#define ENDPTCTRL_TXR BIT(22) /* reserved for port 0 */
+#define ENDPTCTRL_TXE BIT(23)
+
+/******************************************************************************
+ * LOGGING
+ *****************************************************************************/
+#define ci13xxx_printk(level, format, args...) \
+do { \
+ if (_udc == NULL) \
+ printk(level "[%s] " format "\n", __func__, ## args); \
+ else \
+ dev_printk(level, _udc->gadget.dev.parent, \
+ "[%s] " format "\n", __func__, ## args); \
+} while (0)
+
+#define err(format, args...) ci13xxx_printk(KERN_ERR, format, ## args)
+#define warn(format, args...) ci13xxx_printk(KERN_WARNING, format, ## args)
+#define info(format, args...) ci13xxx_printk(KERN_INFO, format, ## args)
+
+#ifdef TRACE
+#define trace(format, args...) ci13xxx_printk(KERN_DEBUG, format, ## args)
+#define dbg_trace(format, args...) dev_dbg(dev, format, ##args)
+#else
+#define trace(format, args...) do {} while (0)
+#define dbg_trace(format, args...) do {} while (0)
+#endif
+
+#endif /* _CI13XXX_h_ */
diff --git a/drivers/usb/gadget/epautoconf.c b/drivers/usb/gadget/epautoconf.c
index 9462e30192d8..a36b1175b18d 100644
--- a/drivers/usb/gadget/epautoconf.c
+++ b/drivers/usb/gadget/epautoconf.c
@@ -161,7 +161,7 @@ ep_matches (
/* report address */
desc->bEndpointAddress &= USB_DIR_IN;
if (isdigit (ep->name [2])) {
- u8 num = simple_strtol (&ep->name [2], NULL, 10);
+ u8 num = simple_strtoul (&ep->name [2], NULL, 10);
desc->bEndpointAddress |= num;
#ifdef MANY_ENDPOINTS
} else if (desc->bEndpointAddress & USB_DIR_IN) {
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index 2e71368f45b4..b10fa31cc915 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -1,7 +1,7 @@
/*
* file_storage.c -- File-backed USB Storage Gadget, for USB development
*
- * Copyright (C) 2003-2007 Alan Stern
+ * Copyright (C) 2003-2008 Alan Stern
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -38,16 +38,17 @@
/*
* The File-backed Storage Gadget acts as a USB Mass Storage device,
- * appearing to the host as a disk drive. In addition to providing an
- * example of a genuinely useful gadget driver for a USB device, it also
- * illustrates a technique of double-buffering for increased throughput.
- * Last but not least, it gives an easy way to probe the behavior of the
- * Mass Storage drivers in a USB host.
+ * appearing to the host as a disk drive or as a CD-ROM drive. In addition
+ * to providing an example of a genuinely useful gadget driver for a USB
+ * device, it also illustrates a technique of double-buffering for increased
+ * throughput. Last but not least, it gives an easy way to probe the
+ * behavior of the Mass Storage drivers in a USB host.
*
* Backing storage is provided by a regular file or a block device, specified
* by the "file" module parameter. Access can be limited to read-only by
- * setting the optional "ro" module parameter. The gadget will indicate that
- * it has removable media if the optional "removable" module parameter is set.
+ * setting the optional "ro" module parameter. (For CD-ROM emulation,
+ * access is always read-only.) The gadget will indicate that it has
+ * removable media if the optional "removable" module parameter is set.
*
* The gadget supports the Control-Bulk (CB), Control-Bulk-Interrupt (CBI),
* and Bulk-Only (also known as Bulk-Bulk-Bulk or BBB) transports, selected
@@ -64,7 +65,12 @@
* The default number of LUNs is taken from the number of "file" elements;
* it is 1 if "file" is not given. If "removable" is not set then a backing
* file must be specified for each LUN. If it is set, then an unspecified
- * or empty backing filename means the LUN's medium is not loaded.
+ * or empty backing filename means the LUN's medium is not loaded. Ideally
+ * each LUN would be settable independently as a disk drive or a CD-ROM
+ * drive, but currently all LUNs have to be the same type. The CD-ROM
+ * emulation includes a single data track and no audio tracks; hence there
+ * need be only one backing file per LUN. Note also that the CD-ROM block
+ * length is set to 512 rather than the more common value 2048.
*
* Requirements are modest; only a bulk-in and a bulk-out endpoint are
* needed (an interrupt-out endpoint is also needed for CBI). The memory
@@ -91,6 +97,8 @@
* USB device controller (usually true),
* boolean to permit the driver to halt
* bulk endpoints
+ * cdrom Default false, boolean for whether to emulate
+ * a CD-ROM drive
* transport=XXX Default BBB, transport name (CB, CBI, or BBB)
* protocol=YYY Default SCSI, protocol name (RBC, 8020 or
* ATAPI, QIC, UFI, 8070, or SCSI;
@@ -103,15 +111,16 @@
* PAGE_CACHE_SIZE)
*
* If CONFIG_USB_FILE_STORAGE_TEST is not set, only the "file", "ro",
- * "removable", "luns", and "stall" options are available; default values
- * are used for everything else.
+ * "removable", "luns", "stall", and "cdrom" options are available; default
+ * values are used for everything else.
*
* The pathnames of the backing files and the ro settings are available in
* the attribute files "file" and "ro" in the lun<n> subdirectory of the
* gadget's sysfs directory. If the "removable" option is set, writing to
* these files will simulate ejecting/loading the medium (writing an empty
* line means eject) and adjusting a write-enable tab. Changes to the ro
- * setting are not allowed when the medium is loaded.
+ * setting are not allowed when the medium is loaded or if CD-ROM emulation
+ * is being used.
*
* This gadget driver is heavily based on "Gadget Zero" by David Brownell.
* The driver's SCSI command interface was based on the "Information
@@ -261,7 +270,7 @@
#define DRIVER_DESC "File-backed Storage Gadget"
#define DRIVER_NAME "g_file_storage"
-#define DRIVER_VERSION "7 August 2007"
+#define DRIVER_VERSION "20 November 2008"
static const char longname[] = DRIVER_DESC;
static const char shortname[] = DRIVER_NAME;
@@ -341,6 +350,7 @@ static struct {
int removable;
int can_stall;
+ int cdrom;
char *transport_parm;
char *protocol_parm;
@@ -359,6 +369,7 @@ static struct {
.protocol_parm = "SCSI",
.removable = 0,
.can_stall = 1,
+ .cdrom = 0,
.vendor = DRIVER_VENDOR_ID,
.product = DRIVER_PRODUCT_ID,
.release = 0xffff, // Use controller chip type
@@ -382,6 +393,9 @@ MODULE_PARM_DESC(removable, "true to simulate removable media");
module_param_named(stall, mod_data.can_stall, bool, S_IRUGO);
MODULE_PARM_DESC(stall, "false to prevent bulk stalls");
+module_param_named(cdrom, mod_data.cdrom, bool, S_IRUGO);
+MODULE_PARM_DESC(cdrom, "true to emulate cdrom instead of disk");
+
/* In the non-TEST version, only the module parameters listed above
* are available. */
@@ -411,6 +425,10 @@ MODULE_PARM_DESC(buflen, "I/O buffer size");
/*-------------------------------------------------------------------------*/
+/* SCSI device types */
+#define TYPE_DISK 0x00
+#define TYPE_CDROM 0x05
+
/* USB protocol value = the transport method */
#define USB_PR_CBI 0x00 // Control/Bulk/Interrupt
#define USB_PR_CB 0x01 // Control/Bulk w/o interrupt
@@ -487,6 +505,8 @@ struct interrupt_data {
#define SC_READ_12 0xa8
#define SC_READ_CAPACITY 0x25
#define SC_READ_FORMAT_CAPACITIES 0x23
+#define SC_READ_HEADER 0x44
+#define SC_READ_TOC 0x43
#define SC_RELEASE 0x17
#define SC_REQUEST_SENSE 0x03
#define SC_RESERVE 0x16
@@ -2006,23 +2026,28 @@ static int do_inquiry(struct fsg_dev *fsg, struct fsg_buffhd *bh)
u8 *buf = (u8 *) bh->buf;
static char vendor_id[] = "Linux ";
- static char product_id[] = "File-Stor Gadget";
+ static char product_disk_id[] = "File-Stor Gadget";
+ static char product_cdrom_id[] = "File-CD Gadget ";
if (!fsg->curlun) { // Unsupported LUNs are okay
fsg->bad_lun_okay = 1;
memset(buf, 0, 36);
buf[0] = 0x7f; // Unsupported, no device-type
+ buf[4] = 31; // Additional length
return 36;
}
- memset(buf, 0, 8); // Non-removable, direct-access device
+ memset(buf, 0, 8);
+ buf[0] = (mod_data.cdrom ? TYPE_CDROM : TYPE_DISK);
if (mod_data.removable)
buf[1] = 0x80;
buf[2] = 2; // ANSI SCSI level 2
buf[3] = 2; // SCSI-2 INQUIRY data format
buf[4] = 31; // Additional length
// No special options
- sprintf(buf + 8, "%-8s%-16s%04x", vendor_id, product_id,
+ sprintf(buf + 8, "%-8s%-16s%04x", vendor_id,
+ (mod_data.cdrom ? product_cdrom_id :
+ product_disk_id),
mod_data.release);
return 36;
}
@@ -2101,6 +2126,75 @@ static int do_read_capacity(struct fsg_dev *fsg, struct fsg_buffhd *bh)
}
+static void store_cdrom_address(u8 *dest, int msf, u32 addr)
+{
+ if (msf) {
+ /* Convert to Minutes-Seconds-Frames */
+ addr >>= 2; /* Convert to 2048-byte frames */
+ addr += 2*75; /* Lead-in occupies 2 seconds */
+ dest[3] = addr % 75; /* Frames */
+ addr /= 75;
+ dest[2] = addr % 60; /* Seconds */
+ addr /= 60;
+ dest[1] = addr; /* Minutes */
+ dest[0] = 0; /* Reserved */
+ } else {
+ /* Absolute sector */
+ put_be32(dest, addr);
+ }
+}
+
+static int do_read_header(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+ struct lun *curlun = fsg->curlun;
+ int msf = fsg->cmnd[1] & 0x02;
+ u32 lba = get_be32(&fsg->cmnd[2]);
+ u8 *buf = (u8 *) bh->buf;
+
+ if ((fsg->cmnd[1] & ~0x02) != 0) { /* Mask away MSF */
+ curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+ return -EINVAL;
+ }
+ if (lba >= curlun->num_sectors) {
+ curlun->sense_data = SS_LOGICAL_BLOCK_ADDRESS_OUT_OF_RANGE;
+ return -EINVAL;
+ }
+
+ memset(buf, 0, 8);
+ buf[0] = 0x01; /* 2048 bytes of user data, rest is EC */
+ store_cdrom_address(&buf[4], msf, lba);
+ return 8;
+}
+
+
+static int do_read_toc(struct fsg_dev *fsg, struct fsg_buffhd *bh)
+{
+ struct lun *curlun = fsg->curlun;
+ int msf = fsg->cmnd[1] & 0x02;
+ int start_track = fsg->cmnd[6];
+ u8 *buf = (u8 *) bh->buf;
+
+ if ((fsg->cmnd[1] & ~0x02) != 0 || /* Mask away MSF */
+ start_track > 1) {
+ curlun->sense_data = SS_INVALID_FIELD_IN_CDB;
+ return -EINVAL;
+ }
+
+ memset(buf, 0, 20);
+ buf[1] = (20-2); /* TOC data length */
+ buf[2] = 1; /* First track number */
+ buf[3] = 1; /* Last track number */
+ buf[5] = 0x16; /* Data track, copying allowed */
+ buf[6] = 0x01; /* Only track is number 1 */
+ store_cdrom_address(&buf[8], msf, 0);
+
+ buf[13] = 0x16; /* Lead-out track is data */
+ buf[14] = 0xAA; /* Lead-out track number */
+ store_cdrom_address(&buf[16], msf, curlun->num_sectors);
+ return 20;
+}
+
+
static int do_mode_sense(struct fsg_dev *fsg, struct fsg_buffhd *bh)
{
struct lun *curlun = fsg->curlun;
@@ -2848,6 +2942,26 @@ static int do_scsi_command(struct fsg_dev *fsg)
reply = do_read_capacity(fsg, bh);
break;
+ case SC_READ_HEADER:
+ if (!mod_data.cdrom)
+ goto unknown_cmnd;
+ fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]);
+ if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+ (3<<7) | (0x1f<<1), 1,
+ "READ HEADER")) == 0)
+ reply = do_read_header(fsg, bh);
+ break;
+
+ case SC_READ_TOC:
+ if (!mod_data.cdrom)
+ goto unknown_cmnd;
+ fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]);
+ if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
+ (7<<6) | (1<<1), 1,
+ "READ TOC")) == 0)
+ reply = do_read_toc(fsg, bh);
+ break;
+
case SC_READ_FORMAT_CAPACITIES:
fsg->data_size_from_cmnd = get_be16(&fsg->cmnd[7]);
if ((reply = check_command(fsg, 10, DATA_DIR_TO_HOST,
@@ -2933,6 +3047,7 @@ static int do_scsi_command(struct fsg_dev *fsg)
// Fall through
default:
+ unknown_cmnd:
fsg->data_size_from_cmnd = 0;
sprintf(unknown, "Unknown x%02x", fsg->cmnd[0]);
if ((reply = check_command(fsg, fsg->cmnd_size,
@@ -3498,6 +3613,7 @@ static int open_backing_file(struct lun *curlun, const char *filename)
struct inode *inode = NULL;
loff_t size;
loff_t num_sectors;
+ loff_t min_sectors;
/* R/W if we can, R/O if we must */
ro = curlun->ro;
@@ -3541,8 +3657,19 @@ static int open_backing_file(struct lun *curlun, const char *filename)
rc = (int) size;
goto out;
}
- num_sectors = size >> 9; // File size in 512-byte sectors
- if (num_sectors == 0) {
+ num_sectors = size >> 9; // File size in 512-byte blocks
+ min_sectors = 1;
+ if (mod_data.cdrom) {
+ num_sectors &= ~3; // Reduce to a multiple of 2048
+ min_sectors = 300*4; // Smallest track is 300 frames
+ if (num_sectors >= 256*60*75*4) {
+ num_sectors = (256*60*75 - 1) * 4;
+ LINFO(curlun, "file too big: %s\n", filename);
+ LINFO(curlun, "using only first %d blocks\n",
+ (int) num_sectors);
+ }
+ }
+ if (num_sectors < min_sectors) {
LINFO(curlun, "file too small: %s\n", filename);
rc = -ETOOSMALL;
goto out;
@@ -3845,9 +3972,12 @@ static int __init fsg_bind(struct usb_gadget *gadget)
goto out;
if (mod_data.removable) { // Enable the store_xxx attributes
- dev_attr_ro.attr.mode = dev_attr_file.attr.mode = 0644;
- dev_attr_ro.store = store_ro;
+ dev_attr_file.attr.mode = 0644;
dev_attr_file.store = store_file;
+ if (!mod_data.cdrom) {
+ dev_attr_ro.attr.mode = 0644;
+ dev_attr_ro.store = store_ro;
+ }
}
/* Find out how many LUNs there should be */
@@ -3872,6 +4002,8 @@ static int __init fsg_bind(struct usb_gadget *gadget)
for (i = 0; i < fsg->nluns; ++i) {
curlun = &fsg->luns[i];
curlun->ro = mod_data.ro[i];
+ if (mod_data.cdrom)
+ curlun->ro = 1;
curlun->dev.release = lun_release;
curlun->dev.parent = &gadget->dev;
curlun->dev.driver = &fsg_driver.driver;
@@ -4031,9 +4163,9 @@ static int __init fsg_bind(struct usb_gadget *gadget)
mod_data.protocol_name, mod_data.protocol_type);
DBG(fsg, "VendorID=x%04x, ProductID=x%04x, Release=x%04x\n",
mod_data.vendor, mod_data.product, mod_data.release);
- DBG(fsg, "removable=%d, stall=%d, buflen=%u\n",
+ DBG(fsg, "removable=%d, stall=%d, cdrom=%d, buflen=%u\n",
mod_data.removable, mod_data.can_stall,
- mod_data.buflen);
+ mod_data.cdrom, mod_data.buflen);
DBG(fsg, "I/O thread pid: %d\n", task_pid_nr(fsg->thread_task));
set_bit(REGISTERED, &fsg->atomic_bitflags);
@@ -4050,6 +4182,7 @@ out:
fsg->state = FSG_STATE_TERMINATED; // The thread is dead
fsg_unbind(gadget);
close_all_backing_files(fsg);
+ complete(&fsg->thread_notifier);
return rc;
}
diff --git a/drivers/usb/gadget/fsl_qe_udc.c b/drivers/usb/gadget/fsl_qe_udc.c
index b3408ff39fba..d6c5bcd40064 100644
--- a/drivers/usb/gadget/fsl_qe_udc.c
+++ b/drivers/usb/gadget/fsl_qe_udc.c
@@ -26,6 +26,7 @@
#include <linux/ioport.h>
#include <linux/types.h>
#include <linux/errno.h>
+#include <linux/err.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/interrupt.h>
@@ -370,6 +371,9 @@ static int qe_ep_bd_init(struct qe_udc *udc, unsigned char pipe_num)
/* alloc multi-ram for BD rings and set the ep parameters */
tmp_addr = cpm_muram_alloc(sizeof(struct qe_bd) * (bdring_len +
USB_BDRING_LEN_TX), QE_ALIGNMENT_OF_BD);
+ if (IS_ERR_VALUE(tmp_addr))
+ return -ENOMEM;
+
out_be16(&epparam->rbase, (u16)tmp_addr);
out_be16(&epparam->tbase, (u16)(tmp_addr +
(sizeof(struct qe_bd) * bdring_len)));
@@ -689,7 +693,7 @@ en_done2:
en_done1:
spin_unlock_irqrestore(&udc->lock, flags);
en_done:
- dev_dbg(udc->dev, "failed to initialize %s\n", ep->ep.name);
+ dev_err(udc->dev, "failed to initialize %s\n", ep->ep.name);
return -ENODEV;
}
@@ -2408,6 +2412,8 @@ static struct qe_udc __devinit *qe_udc_config(struct of_device *ofdev)
tmp_addr = cpm_muram_alloc((USB_MAX_ENDPOINTS *
sizeof(struct usb_ep_para)),
USB_EP_PARA_ALIGNMENT);
+ if (IS_ERR_VALUE(tmp_addr))
+ goto cleanup;
for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
out_be16(&usbpram->epptr[i], (u16)tmp_addr);
@@ -2513,7 +2519,7 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
/* Initialize the udc structure including QH member and other member */
udc_controller = qe_udc_config(ofdev);
if (!udc_controller) {
- dev_dbg(&ofdev->dev, "udc_controll is NULL\n");
+ dev_err(&ofdev->dev, "failed to initialize\n");
return -ENOMEM;
}
@@ -2545,7 +2551,7 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
device_initialize(&udc_controller->gadget.dev);
- strcpy(udc_controller->gadget.dev.bus_id, "gadget");
+ dev_set_name(&udc_controller->gadget.dev, "gadget");
udc_controller->gadget.dev.release = qe_udc_release;
udc_controller->gadget.dev.parent = &ofdev->dev;
@@ -2568,7 +2574,7 @@ static int __devinit qe_udc_probe(struct of_device *ofdev,
/* create a buf for ZLP send, need to remain zeroed */
udc_controller->nullbuf = kzalloc(256, GFP_KERNEL);
if (udc_controller->nullbuf == NULL) {
- dev_dbg(udc_controller->dev, "cannot alloc nullbuf\n");
+ dev_err(udc_controller->dev, "cannot alloc nullbuf\n");
ret = -ENOMEM;
goto err3;
}
diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index 4e3107dd2f34..ec6d439a2aa5 100644
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -110,7 +110,6 @@
#define gadget_is_at91(g) 0
#endif
-/* status unclear */
#ifdef CONFIG_USB_GADGET_IMX
#define gadget_is_imx(g) !strcmp("imx_udc", (g)->name)
#else
@@ -158,6 +157,11 @@
#define gadget_is_fsl_qe(g) 0
#endif
+#ifdef CONFIG_USB_GADGET_CI13XXX
+#define gadget_is_ci13xxx(g) (!strcmp("ci13xxx_udc", (g)->name))
+#else
+#define gadget_is_ci13xxx(g) 0
+#endif
// CONFIG_USB_GADGET_SX2
// CONFIG_USB_GADGET_AU1X00
@@ -225,6 +229,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
return 0x21;
else if (gadget_is_fsl_qe(gadget))
return 0x22;
+ else if (gadget_is_ci13xxx(gadget))
+ return 0x23;
return -ENOENT;
}
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index 60aa04847b18..63419c4d503c 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -1349,7 +1349,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
int retval;
if (!driver
- || driver->speed != USB_SPEED_FULL
+ || driver->speed < USB_SPEED_FULL
|| !driver->bind
|| !driver->disconnect
|| !driver->setup)
diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c
new file mode 100644
index 000000000000..cde8fdf15d5b
--- /dev/null
+++ b/drivers/usb/gadget/imx_udc.c
@@ -0,0 +1,1516 @@
+/*
+ * driver/usb/gadget/imx_udc.c
+ *
+ * Copyright (C) 2005 Mike Lee(eemike@gmail.com)
+ * Copyright (C) 2008 Darius Augulis <augulis.darius@gmail.com>
+ *
+ * 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.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include <mach/usb.h>
+#include <mach/hardware.h>
+
+#include "imx_udc.h"
+
+static const char driver_name[] = "imx_udc";
+static const char ep0name[] = "ep0";
+
+void ep0_chg_stat(const char *label, struct imx_udc_struct *imx_usb,
+ enum ep0_state stat);
+
+/*******************************************************************************
+ * IMX UDC hardware related functions
+ *******************************************************************************
+ */
+
+void imx_udc_enable(struct imx_udc_struct *imx_usb)
+{
+ int temp = __raw_readl(imx_usb->base + USB_CTRL);
+ __raw_writel(temp | CTRL_FE_ENA | CTRL_AFE_ENA, imx_usb->base + USB_CTRL);
+ imx_usb->gadget.speed = USB_SPEED_FULL;
+}
+
+void imx_udc_disable(struct imx_udc_struct *imx_usb)
+{
+ int temp = __raw_readl(imx_usb->base + USB_CTRL);
+
+ __raw_writel(temp & ~(CTRL_FE_ENA | CTRL_AFE_ENA),
+ imx_usb->base + USB_CTRL);
+
+ ep0_chg_stat(__func__, imx_usb, EP0_IDLE);
+ imx_usb->gadget.speed = USB_SPEED_UNKNOWN;
+}
+
+void imx_udc_reset(struct imx_udc_struct *imx_usb)
+{
+ int temp = __raw_readl(imx_usb->base + USB_ENAB);
+
+ /* set RST bit */
+ __raw_writel(temp | ENAB_RST, imx_usb->base + USB_ENAB);
+
+ /* wait RST bit to clear */
+ do {} while (__raw_readl(imx_usb->base + USB_ENAB) & ENAB_RST);
+
+ /* wait CFG bit to assert */
+ do {} while (!(__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG));
+
+ /* udc module is now ready */
+}
+
+void imx_udc_config(struct imx_udc_struct *imx_usb)
+{
+ u8 ep_conf[5];
+ u8 i, j, cfg;
+ struct imx_ep_struct *imx_ep;
+
+ /* wait CFG bit to assert */
+ do {} while (!(__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG));
+
+ /* Download the endpoint buffer for endpoint 0. */
+ for (j = 0; j < 5; j++) {
+ i = (j == 2 ? imx_usb->imx_ep[0].fifosize : 0x00);
+ __raw_writeb(i, imx_usb->base + USB_DDAT);
+ do {} while (__raw_readl(imx_usb->base + USB_DADR) & DADR_BSY);
+ }
+
+ /* Download the endpoint buffers for endpoints 1-5.
+ * We specify two configurations, one interface
+ */
+ for (cfg = 1; cfg < 3; cfg++) {
+ for (i = 1; i < IMX_USB_NB_EP; i++) {
+ imx_ep = &imx_usb->imx_ep[i];
+ /* EP no | Config no */
+ ep_conf[0] = (i << 4) | (cfg << 2);
+ /* Type | Direction */
+ ep_conf[1] = (imx_ep->bmAttributes << 3) |
+ (EP_DIR(imx_ep) << 2);
+ /* Max packet size */
+ ep_conf[2] = imx_ep->fifosize;
+ /* TRXTYP */
+ ep_conf[3] = 0xC0;
+ /* FIFO no */
+ ep_conf[4] = i;
+
+ D_INI(imx_usb->dev,
+ "<%s> ep%d_conf[%d]:"
+ "[%02x-%02x-%02x-%02x-%02x]\n",
+ __func__, i, cfg,
+ ep_conf[0], ep_conf[1], ep_conf[2],
+ ep_conf[3], ep_conf[4]);
+
+ for (j = 0; j < 5; j++) {
+ __raw_writeb(ep_conf[j],
+ imx_usb->base + USB_DDAT);
+ do {} while (__raw_readl(imx_usb->base + USB_DADR)
+ & DADR_BSY);
+ }
+ }
+ }
+
+ /* wait CFG bit to clear */
+ do {} while (__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG);
+}
+
+void imx_udc_init_irq(struct imx_udc_struct *imx_usb)
+{
+ int i;
+
+ /* Mask and clear all irqs */
+ __raw_writel(0xFFFFFFFF, imx_usb->base + USB_MASK);
+ __raw_writel(0xFFFFFFFF, imx_usb->base + USB_INTR);
+ for (i = 0; i < IMX_USB_NB_EP; i++) {
+ __raw_writel(0x1FF, imx_usb->base + USB_EP_MASK(i));
+ __raw_writel(0x1FF, imx_usb->base + USB_EP_INTR(i));
+ }
+
+ /* Enable USB irqs */
+ __raw_writel(INTR_MSOF | INTR_FRAME_MATCH, imx_usb->base + USB_MASK);
+
+ /* Enable EP0 irqs */
+ __raw_writel(0x1FF & ~(EPINTR_DEVREQ | EPINTR_MDEVREQ | EPINTR_EOT
+ | EPINTR_EOF | EPINTR_FIFO_EMPTY | EPINTR_FIFO_FULL),
+ imx_usb->base + USB_EP_MASK(0));
+}
+
+void imx_udc_init_ep(struct imx_udc_struct *imx_usb)
+{
+ int i, max, temp;
+ struct imx_ep_struct *imx_ep;
+ for (i = 0; i < IMX_USB_NB_EP; i++) {
+ imx_ep = &imx_usb->imx_ep[i];
+ switch (imx_ep->fifosize) {
+ case 8:
+ max = 0;
+ break;
+ case 16:
+ max = 1;
+ break;
+ case 32:
+ max = 2;
+ break;
+ case 64:
+ max = 3;
+ break;
+ default:
+ max = 1;
+ break;
+ }
+ temp = (EP_DIR(imx_ep) << 7) | (max << 5)
+ | (imx_ep->bmAttributes << 3);
+ __raw_writel(temp, imx_usb->base + USB_EP_STAT(i));
+ __raw_writel(temp | EPSTAT_FLUSH, imx_usb->base + USB_EP_STAT(i));
+ D_INI(imx_usb->dev, "<%s> ep%d_stat %08x\n", __func__, i,
+ __raw_readl(imx_usb->base + USB_EP_STAT(i)));
+ }
+}
+
+void imx_udc_init_fifo(struct imx_udc_struct *imx_usb)
+{
+ int i, temp;
+ struct imx_ep_struct *imx_ep;
+ for (i = 0; i < IMX_USB_NB_EP; i++) {
+ imx_ep = &imx_usb->imx_ep[i];
+
+ /* Fifo control */
+ temp = EP_DIR(imx_ep) ? 0x0B000000 : 0x0F000000;
+ __raw_writel(temp, imx_usb->base + USB_EP_FCTRL(i));
+ D_INI(imx_usb->dev, "<%s> ep%d_fctrl %08x\n", __func__, i,
+ __raw_readl(imx_usb->base + USB_EP_FCTRL(i)));
+
+ /* Fifo alarm */
+ temp = (i ? imx_ep->fifosize / 2 : 0);
+ __raw_writel(temp, imx_usb->base + USB_EP_FALRM(i));
+ D_INI(imx_usb->dev, "<%s> ep%d_falrm %08x\n", __func__, i,
+ __raw_readl(imx_usb->base + USB_EP_FALRM(i)));
+ }
+}
+
+static void imx_udc_init(struct imx_udc_struct *imx_usb)
+{
+ /* Reset UDC */
+ imx_udc_reset(imx_usb);
+
+ /* Download config to enpoint buffer */
+ imx_udc_config(imx_usb);
+
+ /* Setup interrups */
+ imx_udc_init_irq(imx_usb);
+
+ /* Setup endpoints */
+ imx_udc_init_ep(imx_usb);
+
+ /* Setup fifos */
+ imx_udc_init_fifo(imx_usb);
+}
+
+void imx_ep_irq_enable(struct imx_ep_struct *imx_ep)
+{
+
+ int i = EP_NO(imx_ep);
+
+ __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_MASK(i));
+ __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_INTR(i));
+ __raw_writel(0x1FF & ~(EPINTR_EOT | EPINTR_EOF),
+ imx_ep->imx_usb->base + USB_EP_MASK(i));
+}
+
+void imx_ep_irq_disable(struct imx_ep_struct *imx_ep)
+{
+
+ int i = EP_NO(imx_ep);
+
+ __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_MASK(i));
+ __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_INTR(i));
+}
+
+int imx_ep_empty(struct imx_ep_struct *imx_ep)
+{
+ struct imx_udc_struct *imx_usb = imx_ep->imx_usb;
+
+ return __raw_readl(imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep)))
+ & FSTAT_EMPTY;
+}
+
+unsigned imx_fifo_bcount(struct imx_ep_struct *imx_ep)
+{
+ struct imx_udc_struct *imx_usb = imx_ep->imx_usb;
+
+ return (__raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)))
+ & EPSTAT_BCOUNT) >> 16;
+}
+
+void imx_flush(struct imx_ep_struct *imx_ep)
+{
+ struct imx_udc_struct *imx_usb = imx_ep->imx_usb;
+
+ int temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)));
+ __raw_writel(temp | EPSTAT_FLUSH,
+ imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)));
+}
+
+void imx_ep_stall(struct imx_ep_struct *imx_ep)
+{
+ struct imx_udc_struct *imx_usb = imx_ep->imx_usb;
+ int temp, i;
+
+ D_ERR(imx_usb->dev, "<%s> Forced stall on %s\n", __func__, imx_ep->ep.name);
+
+ imx_flush(imx_ep);
+
+ /* Special care for ep0 */
+ if (EP_NO(imx_ep)) {
+ temp = __raw_readl(imx_usb->base + USB_CTRL);
+ __raw_writel(temp | CTRL_CMDOVER | CTRL_CMDERROR, imx_usb->base + USB_CTRL);
+ do { } while (__raw_readl(imx_usb->base + USB_CTRL) & CTRL_CMDOVER);
+ temp = __raw_readl(imx_usb->base + USB_CTRL);
+ __raw_writel(temp & ~CTRL_CMDERROR, imx_usb->base + USB_CTRL);
+ }
+ else {
+ temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)));
+ __raw_writel(temp | EPSTAT_STALL,
+ imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)));
+
+ for (i = 0; i < 100; i ++) {
+ temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)));
+ if (!temp & EPSTAT_STALL)
+ break;
+ udelay(20);
+ }
+ if (i == 50)
+ D_ERR(imx_usb->dev, "<%s> Non finished stall on %s\n",
+ __func__, imx_ep->ep.name);
+ }
+}
+
+static int imx_udc_get_frame(struct usb_gadget *_gadget)
+{
+ struct imx_udc_struct *imx_usb = container_of(_gadget,
+ struct imx_udc_struct, gadget);
+
+ return __raw_readl(imx_usb->base + USB_FRAME) & 0x7FF;
+}
+
+static int imx_udc_wakeup(struct usb_gadget *_gadget)
+{
+ return 0;
+}
+
+/*******************************************************************************
+ * USB request control functions
+ *******************************************************************************
+ */
+
+static void ep_add_request(struct imx_ep_struct *imx_ep, struct imx_request *req)
+{
+ if (unlikely(!req))
+ return;
+
+ req->in_use = 1;
+ list_add_tail(&req->queue, &imx_ep->queue);
+}
+
+static void ep_del_request(struct imx_ep_struct *imx_ep, struct imx_request *req)
+{
+ if (unlikely(!req))
+ return;
+
+ list_del_init(&req->queue);
+ req->in_use = 0;
+}
+
+static void done(struct imx_ep_struct *imx_ep, struct imx_request *req, int status)
+{
+ ep_del_request(imx_ep, req);
+
+ if (likely(req->req.status == -EINPROGRESS))
+ req->req.status = status;
+ else
+ status = req->req.status;
+
+ if (status && status != -ESHUTDOWN)
+ D_ERR(imx_ep->imx_usb->dev,
+ "<%s> complete %s req %p stat %d len %u/%u\n", __func__,
+ imx_ep->ep.name, &req->req, status,
+ req->req.actual, req->req.length);
+
+ req->req.complete(&imx_ep->ep, &req->req);
+}
+
+static void nuke(struct imx_ep_struct *imx_ep, int status)
+{
+ struct imx_request *req;
+
+ while (!list_empty(&imx_ep->queue)) {
+ req = list_entry(imx_ep->queue.next, struct imx_request, queue);
+ done(imx_ep, req, status);
+ }
+}
+
+/*******************************************************************************
+ * Data tansfer over USB functions
+ *******************************************************************************
+ */
+static int read_packet(struct imx_ep_struct *imx_ep, struct imx_request *req)
+{
+ u8 *buf;
+ int bytes_ep, bufferspace, count, i;
+
+ bytes_ep = imx_fifo_bcount(imx_ep);
+ bufferspace = req->req.length - req->req.actual;
+
+ buf = req->req.buf + req->req.actual;
+ prefetchw(buf);
+
+ if (unlikely(imx_ep_empty(imx_ep)))
+ count = 0; /* zlp */
+ else
+ count = min(bytes_ep, bufferspace);
+
+ for (i = count; i > 0; i--)
+ *buf++ = __raw_readb(imx_ep->imx_usb->base
+ + USB_EP_FDAT0(EP_NO(imx_ep)));
+ req->req.actual += count;
+
+ return count;
+}
+
+static int write_packet(struct imx_ep_struct *imx_ep, struct imx_request *req)
+{
+ u8 *buf;
+ int length, count, temp;
+
+ buf = req->req.buf + req->req.actual;
+ prefetch(buf);
+
+ length = min(req->req.length - req->req.actual, (u32)imx_ep->fifosize);
+
+ if (imx_fifo_bcount(imx_ep) + length > imx_ep->fifosize) {
+ D_TRX(imx_ep->imx_usb->dev, "<%s> packet overfill %s fifo\n",
+ __func__, imx_ep->ep.name);
+ return -1;
+ }
+
+ req->req.actual += length;
+ count = length;
+
+ if (!count && req->req.zero) { /* zlp */
+ temp = __raw_readl(imx_ep->imx_usb->base
+ + USB_EP_STAT(EP_NO(imx_ep)));
+ __raw_writel(temp | EPSTAT_ZLPS, imx_ep->imx_usb->base
+ + USB_EP_STAT(EP_NO(imx_ep)));
+ D_TRX(imx_ep->imx_usb->dev, "<%s> zero packet\n", __func__);
+ return 0;
+ }
+
+ while (count--) {
+ if (count == 0) { /* last byte */
+ temp = __raw_readl(imx_ep->imx_usb->base
+ + USB_EP_FCTRL(EP_NO(imx_ep)));
+ __raw_writel(temp | FCTRL_WFR, imx_ep->imx_usb->base
+ + USB_EP_FCTRL(EP_NO(imx_ep)));
+ }
+ __raw_writeb(*buf++,
+ imx_ep->imx_usb->base + USB_EP_FDAT0(EP_NO(imx_ep)));
+ }
+
+ return length;
+}
+
+static int read_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req)
+{
+ int bytes = 0,
+ count,
+ completed = 0;
+
+ while (__raw_readl(imx_ep->imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep)))
+ & FSTAT_FR) {
+ count = read_packet(imx_ep, req);
+ bytes += count;
+
+ completed = (count != imx_ep->fifosize);
+ if (completed || req->req.actual == req->req.length) {
+ completed = 1;
+ break;
+ }
+ }
+
+ if (completed || !req->req.length) {
+ done(imx_ep, req, 0);
+ D_REQ(imx_ep->imx_usb->dev, "<%s> %s req<%p> %s\n",
+ __func__, imx_ep->ep.name, req,
+ completed ? "completed" : "not completed");
+ if (!EP_NO(imx_ep))
+ ep0_chg_stat(__func__, imx_ep->imx_usb, EP0_IDLE);
+ }
+
+ D_TRX(imx_ep->imx_usb->dev, "<%s> bytes read: %d\n", __func__, bytes);
+
+ return completed;
+}
+
+static int write_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req)
+{
+ int bytes = 0,
+ count,
+ completed = 0;
+
+ while (!completed) {
+ count = write_packet(imx_ep, req);
+ if (count < 0)
+ break; /* busy */
+ bytes += count;
+
+ /* last packet "must be" short (or a zlp) */
+ completed = (count != imx_ep->fifosize);
+
+ if (unlikely(completed)) {
+ done(imx_ep, req, 0);
+ D_REQ(imx_ep->imx_usb->dev, "<%s> %s req<%p> %s\n",
+ __func__, imx_ep->ep.name, req,
+ completed ? "completed" : "not completed");
+ if (!EP_NO(imx_ep))
+ ep0_chg_stat(__func__, imx_ep->imx_usb, EP0_IDLE);
+ }
+ }
+
+ D_TRX(imx_ep->imx_usb->dev, "<%s> bytes sent: %d\n", __func__, bytes);
+
+ return completed;
+}
+
+/*******************************************************************************
+ * Endpoint handlers
+ *******************************************************************************
+ */
+static int handle_ep(struct imx_ep_struct *imx_ep)
+{
+ struct imx_request *req;
+ int completed = 0;
+
+ do {
+ if (!list_empty(&imx_ep->queue))
+ req = list_entry(imx_ep->queue.next,
+ struct imx_request, queue);
+ else {
+ D_REQ(imx_ep->imx_usb->dev, "<%s> no request on %s\n",
+ __func__, imx_ep->ep.name);
+ return 0;
+ }
+
+ if (EP_DIR(imx_ep)) /* to host */
+ completed = write_fifo(imx_ep, req);
+ else /* to device */
+ completed = read_fifo(imx_ep, req);
+
+ dump_ep_stat(__func__, imx_ep);
+
+ } while (completed);
+
+ return 0;
+}
+
+static int handle_ep0(struct imx_ep_struct *imx_ep)
+{
+ struct imx_request *req = NULL;
+ int ret = 0;
+
+ if (!list_empty(&imx_ep->queue))
+ req = list_entry(imx_ep->queue.next, struct imx_request, queue);
+
+ if (req) {
+ switch (imx_ep->imx_usb->ep0state) {
+
+ case EP0_IN_DATA_PHASE: /* GET_DESCRIPTOR */
+ write_fifo(imx_ep, req);
+ break;
+ case EP0_OUT_DATA_PHASE: /* SET_DESCRIPTOR */
+ read_fifo(imx_ep, req);
+ break;
+ default:
+ D_EP0(imx_ep->imx_usb->dev,
+ "<%s> ep0 i/o, odd state %d\n",
+ __func__, imx_ep->imx_usb->ep0state);
+ ep_del_request(imx_ep, req);
+ ret = -EL2HLT;
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static void handle_ep0_devreq(struct imx_udc_struct *imx_usb)
+{
+ struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[0];
+ union {
+ struct usb_ctrlrequest r;
+ u8 raw[8];
+ u32 word[2];
+ } u;
+ int temp, i;
+
+ nuke(imx_ep, -EPROTO);
+
+ /* read SETUP packet */
+ for (i = 0; i < 2; i++) {
+ if (imx_ep_empty(imx_ep)) {
+ D_ERR(imx_usb->dev,
+ "<%s> no setup packet received\n", __func__);
+ goto stall;
+ }
+ u.word[i] = __raw_readl(imx_usb->base + USB_EP_FDAT(EP_NO(imx_ep)));
+ }
+
+ temp = imx_ep_empty(imx_ep);
+ while (!imx_ep_empty(imx_ep)) {
+ i = __raw_readl(imx_usb->base + USB_EP_FDAT(EP_NO(imx_ep)));
+ D_ERR(imx_usb->dev,
+ "<%s> wrong to have extra bytes for setup : 0x%08x\n",
+ __func__, i);
+ }
+ if (!temp)
+ goto stall;
+
+ le16_to_cpus(&u.r.wValue);
+ le16_to_cpus(&u.r.wIndex);
+ le16_to_cpus(&u.r.wLength);
+
+ D_REQ(imx_usb->dev, "<%s> SETUP %02x.%02x v%04x i%04x l%04x\n",
+ __func__, u.r.bRequestType, u.r.bRequest,
+ u.r.wValue, u.r.wIndex, u.r.wLength);
+
+ if (imx_usb->set_config) {
+ /* NACK the host by using CMDOVER */
+ temp = __raw_readl(imx_usb->base + USB_CTRL);
+ __raw_writel(temp | CTRL_CMDOVER, imx_usb->base + USB_CTRL);
+
+ D_ERR(imx_usb->dev,
+ "<%s> set config req is pending, NACK the host\n",
+ __func__);
+ return;
+ }
+
+ if (u.r.bRequestType & USB_DIR_IN)
+ ep0_chg_stat(__func__, imx_usb, EP0_IN_DATA_PHASE);
+ else
+ ep0_chg_stat(__func__, imx_usb, EP0_OUT_DATA_PHASE);
+
+ i = imx_usb->driver->setup(&imx_usb->gadget, &u.r);
+ if (i < 0) {
+ D_ERR(imx_usb->dev, "<%s> device setup error %d\n",
+ __func__, i);
+ goto stall;
+ }
+
+ return;
+stall:
+ D_ERR(imx_usb->dev, "<%s> protocol STALL\n", __func__);
+ imx_ep_stall(imx_ep);
+ ep0_chg_stat(__func__, imx_usb, EP0_STALL);
+ return;
+}
+
+/*******************************************************************************
+ * USB gadget callback functions
+ *******************************************************************************
+ */
+
+static int imx_ep_enable(struct usb_ep *usb_ep,
+ const struct usb_endpoint_descriptor *desc)
+{
+ struct imx_ep_struct *imx_ep = container_of(usb_ep,
+ struct imx_ep_struct, ep);
+ struct imx_udc_struct *imx_usb = imx_ep->imx_usb;
+ unsigned long flags;
+
+ if (!usb_ep
+ || !desc
+ || !EP_NO(imx_ep)
+ || desc->bDescriptorType != USB_DT_ENDPOINT
+ || imx_ep->bEndpointAddress != desc->bEndpointAddress) {
+ D_ERR(imx_usb->dev,
+ "<%s> bad ep or descriptor\n", __func__);
+ return -EINVAL;
+ }
+
+ if (imx_ep->bmAttributes != desc->bmAttributes) {
+ D_ERR(imx_usb->dev,
+ "<%s> %s type mismatch\n", __func__, usb_ep->name);
+ return -EINVAL;
+ }
+
+ if (imx_ep->fifosize < le16_to_cpu(desc->wMaxPacketSize)) {
+ D_ERR(imx_usb->dev,
+ "<%s> bad %s maxpacket\n", __func__, usb_ep->name);
+ return -ERANGE;
+ }
+
+ if (!imx_usb->driver || imx_usb->gadget.speed == USB_SPEED_UNKNOWN) {
+ D_ERR(imx_usb->dev, "<%s> bogus device state\n", __func__);
+ return -ESHUTDOWN;
+ }
+
+ local_irq_save(flags);
+
+ imx_ep->stopped = 0;
+ imx_flush(imx_ep);
+ imx_ep_irq_enable(imx_ep);
+
+ local_irq_restore(flags);
+
+ D_EPX(imx_usb->dev, "<%s> ENABLED %s\n", __func__, usb_ep->name);
+ return 0;
+}
+
+static int imx_ep_disable(struct usb_ep *usb_ep)
+{
+ struct imx_ep_struct *imx_ep = container_of(usb_ep,
+ struct imx_ep_struct, ep);
+ unsigned long flags;
+
+ if (!usb_ep || !EP_NO(imx_ep) || !list_empty(&imx_ep->queue)) {
+ D_ERR(imx_ep->imx_usb->dev, "<%s> %s can not be disabled\n",
+ __func__, usb_ep ? imx_ep->ep.name : NULL);
+ return -EINVAL;
+ }
+
+ local_irq_save(flags);
+
+ imx_ep->stopped = 1;
+ nuke(imx_ep, -ESHUTDOWN);
+ imx_flush(imx_ep);
+ imx_ep_irq_disable(imx_ep);
+
+ local_irq_restore(flags);
+
+ D_EPX(imx_ep->imx_usb->dev,
+ "<%s> DISABLED %s\n", __func__, usb_ep->name);
+ return 0;
+}
+
+static struct usb_request *imx_ep_alloc_request
+ (struct usb_ep *usb_ep, gfp_t gfp_flags)
+{
+ struct imx_request *req;
+
+ req = kzalloc(sizeof *req, gfp_flags);
+ if (!req || !usb_ep)
+ return 0;
+
+ INIT_LIST_HEAD(&req->queue);
+ req->in_use = 0;
+
+ return &req->req;
+}
+
+static void imx_ep_free_request
+ (struct usb_ep *usb_ep, struct usb_request *usb_req)
+{
+ struct imx_request *req;
+
+ req = container_of(usb_req, struct imx_request, req);
+ WARN_ON(!list_empty(&req->queue));
+ kfree(req);
+}
+
+static int imx_ep_queue
+ (struct usb_ep *usb_ep, struct usb_request *usb_req, gfp_t gfp_flags)
+{
+ struct imx_ep_struct *imx_ep;
+ struct imx_udc_struct *imx_usb;
+ struct imx_request *req;
+ unsigned long flags;
+ int ret = 0;
+
+ imx_ep = container_of(usb_ep, struct imx_ep_struct, ep);
+ imx_usb = imx_ep->imx_usb;
+ req = container_of(usb_req, struct imx_request, req);
+
+ /*
+ Special care on IMX udc.
+ Ignore enqueue when after set configuration from the
+ host. This assume all gadget drivers reply set
+ configuration with the next ep0 req enqueue.
+ */
+ if (imx_usb->set_config && !EP_NO(imx_ep)) {
+ imx_usb->set_config = 0;
+ D_EPX(imx_usb->dev,
+ "<%s> gadget reply set config\n", __func__);
+ return 0;
+ }
+
+ if (unlikely(!usb_req || !req || !usb_req->complete || !usb_req->buf)) {
+ D_ERR(imx_usb->dev, "<%s> bad params\n", __func__);
+ return -EINVAL;
+ }
+
+ if (unlikely(!usb_ep || !imx_ep)) {
+ D_ERR(imx_usb->dev, "<%s> bad ep\n", __func__);
+ return -EINVAL;
+ }
+
+ if (!imx_usb->driver || imx_usb->gadget.speed == USB_SPEED_UNKNOWN) {
+ D_ERR(imx_usb->dev, "<%s> bogus device state\n", __func__);
+ return -ESHUTDOWN;
+ }
+
+ local_irq_save(flags);
+
+ /* Debug */
+ D_REQ(imx_usb->dev, "<%s> ep%d %s request for [%d] bytes\n",
+ __func__, EP_NO(imx_ep),
+ ((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state == EP0_IN_DATA_PHASE)
+ || (EP_NO(imx_ep) && EP_DIR(imx_ep))) ? "IN" : "OUT", usb_req->length);
+ dump_req(__func__, imx_ep, usb_req);
+
+ if (imx_ep->stopped) {
+ usb_req->status = -ESHUTDOWN;
+ ret = -ESHUTDOWN;
+ goto out;
+ }
+
+ if (req->in_use) {
+ D_ERR(imx_usb->dev,
+ "<%s> refusing to queue req %p (already queued)\n",
+ __func__, req);
+ goto out;
+ }
+
+ usb_req->status = -EINPROGRESS;
+ usb_req->actual = 0;
+
+ ep_add_request(imx_ep, req);
+
+ if (!EP_NO(imx_ep))
+ ret = handle_ep0(imx_ep);
+ else
+ ret = handle_ep(imx_ep);
+out:
+ local_irq_restore(flags);
+ return ret;
+}
+
+static int imx_ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req)
+{
+
+ struct imx_ep_struct *imx_ep = container_of
+ (usb_ep, struct imx_ep_struct, ep);
+ struct imx_request *req;
+ unsigned long flags;
+
+ if (unlikely(!usb_ep || !EP_NO(imx_ep))) {
+ D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__);
+ return -EINVAL;
+ }
+
+ local_irq_save(flags);
+
+ /* make sure it's actually queued on this endpoint */
+ list_for_each_entry(req, &imx_ep->queue, queue) {
+ if (&req->req == usb_req)
+ break;
+ }
+ if (&req->req != usb_req) {
+ local_irq_restore(flags);
+ return -EINVAL;
+ }
+
+ done(imx_ep, req, -ECONNRESET);
+
+ local_irq_restore(flags);
+ return 0;
+}
+
+static int imx_ep_set_halt(struct usb_ep *usb_ep, int value)
+{
+ struct imx_ep_struct *imx_ep = container_of
+ (usb_ep, struct imx_ep_struct, ep);
+ unsigned long flags;
+
+ if (unlikely(!usb_ep || !EP_NO(imx_ep))) {
+ D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__);
+ return -EINVAL;
+ }
+
+ local_irq_save(flags);
+
+ if ((imx_ep->bEndpointAddress & USB_DIR_IN)
+ && !list_empty(&imx_ep->queue)) {
+ local_irq_restore(flags);
+ return -EAGAIN;
+ }
+
+ imx_ep_stall(imx_ep);
+
+ local_irq_restore(flags);
+
+ D_EPX(imx_ep->imx_usb->dev, "<%s> %s halt\n", __func__, usb_ep->name);
+ return 0;
+}
+
+static int imx_ep_fifo_status(struct usb_ep *usb_ep)
+{
+ struct imx_ep_struct *imx_ep = container_of
+ (usb_ep, struct imx_ep_struct, ep);
+
+ if (!usb_ep) {
+ D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__);
+ return -ENODEV;
+ }
+
+ if (imx_ep->imx_usb->gadget.speed == USB_SPEED_UNKNOWN)
+ return 0;
+ else
+ return imx_fifo_bcount(imx_ep);
+}
+
+static void imx_ep_fifo_flush(struct usb_ep *usb_ep)
+{
+ struct imx_ep_struct *imx_ep = container_of
+ (usb_ep, struct imx_ep_struct, ep);
+ unsigned long flags;
+
+ local_irq_save(flags);
+
+ if (!usb_ep || !EP_NO(imx_ep) || !list_empty(&imx_ep->queue)) {
+ D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__);
+ local_irq_restore(flags);
+ return;
+ }
+
+ /* toggle and halt bits stay unchanged */
+ imx_flush(imx_ep);
+
+ local_irq_restore(flags);
+}
+
+static struct usb_ep_ops imx_ep_ops = {
+ .enable = imx_ep_enable,
+ .disable = imx_ep_disable,
+
+ .alloc_request = imx_ep_alloc_request,
+ .free_request = imx_ep_free_request,
+
+ .queue = imx_ep_queue,
+ .dequeue = imx_ep_dequeue,
+
+ .set_halt = imx_ep_set_halt,
+ .fifo_status = imx_ep_fifo_status,
+ .fifo_flush = imx_ep_fifo_flush,
+};
+
+/*******************************************************************************
+ * USB endpoint control functions
+ *******************************************************************************
+ */
+
+void ep0_chg_stat(const char *label,
+ struct imx_udc_struct *imx_usb, enum ep0_state stat)
+{
+ D_EP0(imx_usb->dev, "<%s> from %15s to %15s\n",
+ label, state_name[imx_usb->ep0state], state_name[stat]);
+
+ if (imx_usb->ep0state == stat)
+ return;
+
+ imx_usb->ep0state = stat;
+}
+
+static void usb_init_data(struct imx_udc_struct *imx_usb)
+{
+ struct imx_ep_struct *imx_ep;
+ u8 i;
+
+ /* device/ep0 records init */
+ INIT_LIST_HEAD(&imx_usb->gadget.ep_list);
+ INIT_LIST_HEAD(&imx_usb->gadget.ep0->ep_list);
+ ep0_chg_stat(__func__, imx_usb, EP0_IDLE);
+
+ /* basic endpoint records init */
+ for (i = 0; i < IMX_USB_NB_EP; i++) {
+ imx_ep = &imx_usb->imx_ep[i];
+
+ if (i) {
+ list_add_tail(&imx_ep->ep.ep_list,
+ &imx_usb->gadget.ep_list);
+ imx_ep->stopped = 1;
+ } else
+ imx_ep->stopped = 0;
+
+ INIT_LIST_HEAD(&imx_ep->queue);
+ }
+}
+
+static void udc_stop_activity(struct imx_udc_struct *imx_usb,
+ struct usb_gadget_driver *driver)
+{
+ struct imx_ep_struct *imx_ep;
+ int i;
+
+ if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN)
+ driver = NULL;
+
+ /* prevent new request submissions, kill any outstanding requests */
+ for (i = 1; i < IMX_USB_NB_EP; i++) {
+ imx_ep = &imx_usb->imx_ep[i];
+ imx_flush(imx_ep);
+ imx_ep->stopped = 1;
+ imx_ep_irq_disable(imx_ep);
+ nuke(imx_ep, -ESHUTDOWN);
+ }
+
+ imx_usb->cfg = 0;
+ imx_usb->intf = 0;
+ imx_usb->alt = 0;
+
+ if (driver)
+ driver->disconnect(&imx_usb->gadget);
+}
+
+/*******************************************************************************
+ * Interrupt handlers
+ *******************************************************************************
+ */
+
+static irqreturn_t imx_udc_irq(int irq, void *dev)
+{
+ struct imx_udc_struct *imx_usb = dev;
+ struct usb_ctrlrequest u;
+ int temp, cfg, intf, alt;
+ int intr = __raw_readl(imx_usb->base + USB_INTR);
+
+ if (intr & (INTR_WAKEUP | INTR_SUSPEND | INTR_RESUME | INTR_RESET_START
+ | INTR_RESET_STOP | INTR_CFG_CHG)) {
+ dump_intr(__func__, intr, imx_usb->dev);
+ dump_usb_stat(__func__, imx_usb);
+ }
+
+ if (!imx_usb->driver) {
+ /*imx_udc_disable(imx_usb);*/
+ goto end_irq;
+ }
+
+ if (intr & INTR_WAKEUP) {
+ if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN
+ && imx_usb->driver && imx_usb->driver->resume)
+ imx_usb->driver->resume(&imx_usb->gadget);
+ imx_usb->set_config = 0;
+ imx_usb->gadget.speed = USB_SPEED_FULL;
+ }
+
+ if (intr & INTR_SUSPEND) {
+ if (imx_usb->gadget.speed != USB_SPEED_UNKNOWN
+ && imx_usb->driver && imx_usb->driver->suspend)
+ imx_usb->driver->suspend(&imx_usb->gadget);
+ imx_usb->set_config = 0;
+ imx_usb->gadget.speed = USB_SPEED_UNKNOWN;
+ }
+
+ if (intr & INTR_RESET_START) {
+ __raw_writel(intr, imx_usb->base + USB_INTR);
+ udc_stop_activity(imx_usb, imx_usb->driver);
+ imx_usb->set_config = 0;
+ imx_usb->gadget.speed = USB_SPEED_UNKNOWN;
+ }
+
+ if (intr & INTR_RESET_STOP)
+ imx_usb->gadget.speed = USB_SPEED_FULL;
+
+ if (intr & INTR_CFG_CHG) {
+ __raw_writel(INTR_CFG_CHG, imx_usb->base + USB_INTR);
+ temp = __raw_readl(imx_usb->base + USB_STAT);
+ cfg = (temp & STAT_CFG) >> 5;
+ intf = (temp & STAT_INTF) >> 3;
+ alt = temp & STAT_ALTSET;
+
+ D_REQ(imx_usb->dev,
+ "<%s> orig config C=%d, I=%d, A=%d / "
+ "req config C=%d, I=%d, A=%d\n",
+ __func__, imx_usb->cfg, imx_usb->intf, imx_usb->alt,
+ cfg, intf, alt);
+
+ if (cfg != 1 && cfg != 2)
+ goto end_irq;
+
+ imx_usb->set_config = 0;
+
+ /* Config setup */
+ if (imx_usb->cfg != cfg) {
+ D_REQ(imx_usb->dev, "<%s> Change config start\n",__func__);
+ u.bRequest = USB_REQ_SET_CONFIGURATION;
+ u.bRequestType = USB_DIR_OUT |
+ USB_TYPE_STANDARD |
+ USB_RECIP_DEVICE;
+ u.wValue = cfg;
+ u.wIndex = 0;
+ u.wLength = 0;
+ imx_usb->cfg = cfg;
+ imx_usb->set_config = 1;
+ imx_usb->driver->setup(&imx_usb->gadget, &u);
+ imx_usb->set_config = 0;
+ D_REQ(imx_usb->dev, "<%s> Change config done\n",__func__);
+
+ }
+ if (imx_usb->intf != intf || imx_usb->alt != alt) {
+ D_REQ(imx_usb->dev, "<%s> Change interface start\n",__func__);
+ u.bRequest = USB_REQ_SET_INTERFACE;
+ u.bRequestType = USB_DIR_OUT |
+ USB_TYPE_STANDARD |
+ USB_RECIP_INTERFACE;
+ u.wValue = alt;
+ u.wIndex = intf;
+ u.wLength = 0;
+ imx_usb->intf = intf;
+ imx_usb->alt = alt;
+ imx_usb->set_config = 1;
+ imx_usb->driver->setup(&imx_usb->gadget, &u);
+ imx_usb->set_config = 0;
+ D_REQ(imx_usb->dev, "<%s> Change interface done\n",__func__);
+ }
+ }
+
+ if (intr & INTR_SOF) {
+ if (imx_usb->ep0state == EP0_IDLE) {
+ temp = __raw_readl(imx_usb->base + USB_CTRL);
+ __raw_writel(temp | CTRL_CMDOVER, imx_usb->base + USB_CTRL);
+ }
+ }
+
+end_irq:
+ __raw_writel(intr, imx_usb->base + USB_INTR);
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t imx_udc_ctrl_irq(int irq, void *dev)
+{
+ struct imx_udc_struct *imx_usb = dev;
+ int intr = __raw_readl(imx_usb->base + USB_EP_INTR(0));
+
+ dump_ep_intr(__func__, 0, intr, imx_usb->dev);
+
+ if (!imx_usb->driver) {
+ __raw_writel(intr, imx_usb->base + USB_EP_INTR(0));
+ return IRQ_HANDLED;
+ }
+
+ /* DEVREQ IRQ has highest priority */
+ if (intr & (EPINTR_DEVREQ | EPINTR_MDEVREQ))
+ handle_ep0_devreq(imx_usb);
+ /* Seem i.MX is missing EOF interrupt sometimes.
+ * Therefore we monitor both EOF and FIFO_EMPTY interrups
+ * when transmiting, and both EOF and FIFO_FULL when
+ * receiving data.
+ */
+ else if (intr & (EPINTR_EOF | EPINTR_FIFO_EMPTY | EPINTR_FIFO_FULL))
+ handle_ep0(&imx_usb->imx_ep[0]);
+
+ __raw_writel(intr, imx_usb->base + USB_EP_INTR(0));
+
+ return IRQ_HANDLED;
+}
+
+static irqreturn_t imx_udc_bulk_irq(int irq, void *dev)
+{
+ struct imx_udc_struct *imx_usb = dev;
+ struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[irq - USBD_INT0];
+ int intr = __raw_readl(imx_usb->base + USB_EP_INTR(EP_NO(imx_ep)));
+
+ dump_ep_intr(__func__, irq - USBD_INT0, intr, imx_usb->dev);
+
+ if (!imx_usb->driver) {
+ __raw_writel(intr, imx_usb->base + USB_EP_INTR(EP_NO(imx_ep)));
+ return IRQ_HANDLED;
+ }
+
+ handle_ep(imx_ep);
+
+ __raw_writel(intr, imx_usb->base + USB_EP_INTR(EP_NO(imx_ep)));
+
+ return IRQ_HANDLED;
+}
+
+irq_handler_t intr_handler(int i)
+{
+ switch (i) {
+ case 0:
+ return imx_udc_ctrl_irq;
+ case 1:
+ case 2:
+ case 3:
+ case 4:
+ case 5:
+ return imx_udc_bulk_irq;
+ default:
+ return imx_udc_irq;
+ }
+}
+
+/*******************************************************************************
+ * Static defined IMX UDC structure
+ *******************************************************************************
+ */
+
+static const struct usb_gadget_ops imx_udc_ops = {
+ .get_frame = imx_udc_get_frame,
+ .wakeup = imx_udc_wakeup,
+};
+
+static struct imx_udc_struct controller = {
+ .gadget = {
+ .ops = &imx_udc_ops,
+ .ep0 = &controller.imx_ep[0].ep,
+ .name = driver_name,
+ .dev = {
+ .bus_id = "gadget",
+ },
+ },
+
+ .imx_ep[0] = {
+ .ep = {
+ .name = ep0name,
+ .ops = &imx_ep_ops,
+ .maxpacket = 32,
+ },
+ .imx_usb = &controller,
+ .fifosize = 32,
+ .bEndpointAddress = 0,
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+ },
+ .imx_ep[1] = {
+ .ep = {
+ .name = "ep1in-bulk",
+ .ops = &imx_ep_ops,
+ .maxpacket = 64,
+ },
+ .imx_usb = &controller,
+ .fifosize = 64,
+ .bEndpointAddress = USB_DIR_IN | 1,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ },
+ .imx_ep[2] = {
+ .ep = {
+ .name = "ep2out-bulk",
+ .ops = &imx_ep_ops,
+ .maxpacket = 64,
+ },
+ .imx_usb = &controller,
+ .fifosize = 64,
+ .bEndpointAddress = USB_DIR_OUT | 2,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ },
+ .imx_ep[3] = {
+ .ep = {
+ .name = "ep3out-bulk",
+ .ops = &imx_ep_ops,
+ .maxpacket = 32,
+ },
+ .imx_usb = &controller,
+ .fifosize = 32,
+ .bEndpointAddress = USB_DIR_OUT | 3,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ },
+ .imx_ep[4] = {
+ .ep = {
+ .name = "ep4in-int",
+ .ops = &imx_ep_ops,
+ .maxpacket = 32,
+ },
+ .imx_usb = &controller,
+ .fifosize = 32,
+ .bEndpointAddress = USB_DIR_IN | 4,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ },
+ .imx_ep[5] = {
+ .ep = {
+ .name = "ep5out-int",
+ .ops = &imx_ep_ops,
+ .maxpacket = 32,
+ },
+ .imx_usb = &controller,
+ .fifosize = 32,
+ .bEndpointAddress = USB_DIR_OUT | 5,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+ },
+};
+
+/*******************************************************************************
+ * USB gadged driver functions
+ *******************************************************************************
+ */
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+ struct imx_udc_struct *imx_usb = &controller;
+ int retval;
+
+ if (!driver
+ || driver->speed < USB_SPEED_FULL
+ || !driver->bind
+ || !driver->disconnect
+ || !driver->setup)
+ return -EINVAL;
+ if (!imx_usb)
+ return -ENODEV;
+ if (imx_usb->driver)
+ return -EBUSY;
+
+ /* first hook up the driver ... */
+ imx_usb->driver = driver;
+ imx_usb->gadget.dev.driver = &driver->driver;
+
+ retval = device_add(&imx_usb->gadget.dev);
+ if (retval)
+ goto fail;
+ retval = driver->bind(&imx_usb->gadget);
+ if (retval) {
+ D_ERR(imx_usb->dev, "<%s> bind to driver %s --> error %d\n",
+ __func__, driver->driver.name, retval);
+ device_del(&imx_usb->gadget.dev);
+
+ goto fail;
+ }
+
+ D_INI(imx_usb->dev, "<%s> registered gadget driver '%s'\n",
+ __func__, driver->driver.name);
+
+ imx_udc_enable(imx_usb);
+
+ return 0;
+fail:
+ imx_usb->driver = NULL;
+ imx_usb->gadget.dev.driver = NULL;
+ return retval;
+}
+EXPORT_SYMBOL(usb_gadget_register_driver);
+
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct imx_udc_struct *imx_usb = &controller;
+
+ if (!imx_usb)
+ return -ENODEV;
+ if (!driver || driver != imx_usb->driver || !driver->unbind)
+ return -EINVAL;
+
+ udc_stop_activity(imx_usb, driver);
+ imx_udc_disable(imx_usb);
+
+ driver->unbind(&imx_usb->gadget);
+ imx_usb->gadget.dev.driver = NULL;
+ imx_usb->driver = NULL;
+
+ device_del(&imx_usb->gadget.dev);
+
+ D_INI(imx_usb->dev, "<%s> unregistered gadget driver '%s'\n",
+ __func__, driver->driver.name);
+
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+/*******************************************************************************
+ * Module functions
+ *******************************************************************************
+ */
+
+static int __init imx_udc_probe(struct platform_device *pdev)
+{
+ struct imx_udc_struct *imx_usb = &controller;
+ struct resource *res;
+ struct imxusb_platform_data *pdata;
+ struct clk *clk;
+ void __iomem *base;
+ int ret = 0;
+ int i, res_size;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "can't get device resources\n");
+ return -ENODEV;
+ }
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(&pdev->dev, "driver needs platform data\n");
+ return -ENODEV;
+ }
+
+ res_size = res->end - res->start + 1;
+ if (!request_mem_region(res->start, res_size, res->name)) {
+ dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n",
+ res_size, res->start);
+ return -ENOMEM;
+ }
+
+ if (pdata->init) {
+ ret = pdata->init(&pdev->dev);
+ if (ret)
+ goto fail0;
+ }
+
+ base = ioremap(res->start, res_size);
+ if (!base) {
+ dev_err(&pdev->dev, "ioremap failed\n");
+ ret = -EIO;
+ goto fail1;
+ }
+
+ clk = clk_get(NULL, "usbd_clk");
+ if (IS_ERR(clk)) {
+ ret = PTR_ERR(clk);
+ dev_err(&pdev->dev, "can't get USB clock\n");
+ goto fail2;
+ }
+ clk_enable(clk);
+
+ if (clk_get_rate(clk) != 48000000) {
+ D_INI(&pdev->dev,
+ "Bad USB clock (%d Hz), changing to 48000000 Hz\n",
+ (int)clk_get_rate(clk));
+ if (clk_set_rate(clk, 48000000)) {
+ dev_err(&pdev->dev,
+ "Unable to set correct USB clock (48MHz)\n");
+ ret = -EIO;
+ goto fail3;
+ }
+ }
+
+ for (i = 0; i < IMX_USB_NB_EP + 1; i++) {
+ imx_usb->usbd_int[i] = platform_get_irq(pdev, i);
+ if (imx_usb->usbd_int[i] < 0) {
+ dev_err(&pdev->dev, "can't get irq number\n");
+ ret = -ENODEV;
+ goto fail3;
+ }
+ }
+
+ for (i = 0; i < IMX_USB_NB_EP + 1; i++) {
+ ret = request_irq(imx_usb->usbd_int[i], intr_handler(i),
+ IRQF_DISABLED, driver_name, imx_usb);
+ if (ret) {
+ dev_err(&pdev->dev, "can't get irq %i, err %d\n",
+ imx_usb->usbd_int[i], ret);
+ for (--i; i >= 0; i--)
+ free_irq(imx_usb->usbd_int[i], imx_usb);
+ goto fail3;
+ }
+ }
+
+ imx_usb->res = res;
+ imx_usb->base = base;
+ imx_usb->clk = clk;
+ imx_usb->dev = &pdev->dev;
+
+ device_initialize(&imx_usb->gadget.dev);
+
+ imx_usb->gadget.dev.parent = &pdev->dev;
+ imx_usb->gadget.dev.dma_mask = pdev->dev.dma_mask;
+
+ platform_set_drvdata(pdev, imx_usb);
+
+ usb_init_data(imx_usb);
+ imx_udc_init(imx_usb);
+
+ return 0;
+
+fail3:
+ clk_put(clk);
+ clk_disable(clk);
+fail2:
+ iounmap(base);
+fail1:
+ if (pdata->exit)
+ pdata->exit(&pdev->dev);
+fail0:
+ release_mem_region(res->start, res_size);
+ return ret;
+}
+
+static int __exit imx_udc_remove(struct platform_device *pdev)
+{
+ struct imx_udc_struct *imx_usb = platform_get_drvdata(pdev);
+ struct imxusb_platform_data *pdata = pdev->dev.platform_data;
+ int i;
+
+ imx_udc_disable(imx_usb);
+
+ for (i = 0; i < IMX_USB_NB_EP + 1; i++)
+ free_irq(imx_usb->usbd_int[i], imx_usb);
+
+ clk_put(imx_usb->clk);
+ clk_disable(imx_usb->clk);
+ iounmap(imx_usb->base);
+
+ release_mem_region(imx_usb->res->start,
+ imx_usb->res->end - imx_usb->res->start + 1);
+
+ if (pdata->exit)
+ pdata->exit(&pdev->dev);
+
+ platform_set_drvdata(pdev, NULL);
+
+ return 0;
+}
+
+/*----------------------------------------------------------------------------*/
+
+#ifdef CONFIG_PM
+#define imx_udc_suspend NULL
+#define imx_udc_resume NULL
+#else
+#define imx_udc_suspend NULL
+#define imx_udc_resume NULL
+#endif
+
+/*----------------------------------------------------------------------------*/
+
+static struct platform_driver udc_driver = {
+ .driver = {
+ .name = driver_name,
+ .owner = THIS_MODULE,
+ },
+ .remove = __exit_p(imx_udc_remove),
+ .suspend = imx_udc_suspend,
+ .resume = imx_udc_resume,
+};
+
+static int __init udc_init(void)
+{
+ return platform_driver_probe(&udc_driver, imx_udc_probe);
+}
+module_init(udc_init);
+
+static void __exit udc_exit(void)
+{
+ platform_driver_unregister(&udc_driver);
+}
+module_exit(udc_exit);
+
+MODULE_DESCRIPTION("IMX USB Device Controller driver");
+MODULE_AUTHOR("Darius Augulis <augulis.darius@gmail.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:imx_udc");
diff --git a/drivers/usb/gadget/imx_udc.h b/drivers/usb/gadget/imx_udc.h
new file mode 100644
index 000000000000..850076937d8d
--- /dev/null
+++ b/drivers/usb/gadget/imx_udc.h
@@ -0,0 +1,344 @@
+/*
+ * Copyright (C) 2005 Mike Lee(eemike@gmail.com)
+ *
+ * This udc driver is now under testing and code is based on pxa2xx_udc.h
+ * Please use it with your own risk!
+ *
+ * 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.
+ */
+
+#ifndef __LINUX_USB_GADGET_IMX_H
+#define __LINUX_USB_GADGET_IMX_H
+
+#include <linux/types.h>
+
+/* Helper macros */
+#define EP_NO(ep) ((ep->bEndpointAddress) & ~USB_DIR_IN) /* IN:1, OUT:0 */
+#define EP_DIR(ep) ((ep->bEndpointAddress) & USB_DIR_IN ? 1 : 0)
+#define irq_to_ep(irq) (((irq) >= USBD_INT0) || ((irq) <= USBD_INT6) ? ((irq) - USBD_INT0) : (USBD_INT6)) /*should not happen*/
+#define ep_to_irq(ep) (EP_NO((ep)) + USBD_INT0)
+#define IMX_USB_NB_EP 6
+
+/* Driver structures */
+struct imx_request {
+ struct usb_request req;
+ struct list_head queue;
+ unsigned int in_use;
+};
+
+enum ep0_state {
+ EP0_IDLE,
+ EP0_IN_DATA_PHASE,
+ EP0_OUT_DATA_PHASE,
+ EP0_CONFIG,
+ EP0_STALL,
+};
+
+struct imx_ep_struct {
+ struct usb_ep ep;
+ struct imx_udc_struct *imx_usb;
+ struct list_head queue;
+ unsigned char stopped;
+ unsigned char fifosize;
+ unsigned char bEndpointAddress;
+ unsigned char bmAttributes;
+};
+
+struct imx_udc_struct {
+ struct usb_gadget gadget;
+ struct usb_gadget_driver *driver;
+ struct device *dev;
+ struct imx_ep_struct imx_ep[IMX_USB_NB_EP];
+ struct clk *clk;
+ enum ep0_state ep0state;
+ struct resource *res;
+ void __iomem *base;
+ unsigned char set_config;
+ int cfg,
+ intf,
+ alt,
+ usbd_int[7];
+};
+
+/* USB registers */
+#define USB_FRAME (0x00) /* USB frame */
+#define USB_SPEC (0x04) /* USB Spec */
+#define USB_STAT (0x08) /* USB Status */
+#define USB_CTRL (0x0C) /* USB Control */
+#define USB_DADR (0x10) /* USB Desc RAM addr */
+#define USB_DDAT (0x14) /* USB Desc RAM/EP buffer data */
+#define USB_INTR (0x18) /* USB interrupt */
+#define USB_MASK (0x1C) /* USB Mask */
+#define USB_ENAB (0x24) /* USB Enable */
+#define USB_EP_STAT(x) (0x30 + (x*0x30)) /* USB status/control */
+#define USB_EP_INTR(x) (0x34 + (x*0x30)) /* USB interrupt */
+#define USB_EP_MASK(x) (0x38 + (x*0x30)) /* USB mask */
+#define USB_EP_FDAT(x) (0x3C + (x*0x30)) /* USB FIFO data */
+#define USB_EP_FDAT0(x) (0x3C + (x*0x30)) /* USB FIFO data */
+#define USB_EP_FDAT1(x) (0x3D + (x*0x30)) /* USB FIFO data */
+#define USB_EP_FDAT2(x) (0x3E + (x*0x30)) /* USB FIFO data */
+#define USB_EP_FDAT3(x) (0x3F + (x*0x30)) /* USB FIFO data */
+#define USB_EP_FSTAT(x) (0x40 + (x*0x30)) /* USB FIFO status */
+#define USB_EP_FCTRL(x) (0x44 + (x*0x30)) /* USB FIFO control */
+#define USB_EP_LRFP(x) (0x48 + (x*0x30)) /* USB last read frame pointer */
+#define USB_EP_LWFP(x) (0x4C + (x*0x30)) /* USB last write frame pointer */
+#define USB_EP_FALRM(x) (0x50 + (x*0x30)) /* USB FIFO alarm */
+#define USB_EP_FRDP(x) (0x54 + (x*0x30)) /* USB FIFO read pointer */
+#define USB_EP_FWRP(x) (0x58 + (x*0x30)) /* USB FIFO write pointer */
+/* USB Control Register Bit Fields.*/
+#define CTRL_CMDOVER (1<<6) /* UDC status */
+#define CTRL_CMDERROR (1<<5) /* UDC status */
+#define CTRL_FE_ENA (1<<3) /* Enable Font End logic */
+#define CTRL_UDC_RST (1<<2) /* UDC reset */
+#define CTRL_AFE_ENA (1<<1) /* Analog Font end enable */
+#define CTRL_RESUME (1<<0) /* UDC resume */
+/* USB Status Register Bit Fields.*/
+#define STAT_RST (1<<8)
+#define STAT_SUSP (1<<7)
+#define STAT_CFG (3<<5)
+#define STAT_INTF (3<<3)
+#define STAT_ALTSET (7<<0)
+/* USB Interrupt Status/Mask Registers Bit fields */
+#define INTR_WAKEUP (1<<31) /* Wake up Interrupt */
+#define INTR_MSOF (1<<7) /* Missed Start of Frame */
+#define INTR_SOF (1<<6) /* Start of Frame */
+#define INTR_RESET_STOP (1<<5) /* Reset Signaling stop */
+#define INTR_RESET_START (1<<4) /* Reset Signaling start */
+#define INTR_RESUME (1<<3) /* Suspend to resume */
+#define INTR_SUSPEND (1<<2) /* Active to suspend */
+#define INTR_FRAME_MATCH (1<<1) /* Frame matched */
+#define INTR_CFG_CHG (1<<0) /* Configuration change occurred */
+/* USB Enable Register Bit Fields.*/
+#define ENAB_RST (1<<31) /* Reset USB modules */
+#define ENAB_ENAB (1<<30) /* Enable USB modules*/
+#define ENAB_SUSPEND (1<<29) /* Suspend USB modules */
+#define ENAB_ENDIAN (1<<28) /* Endian of USB modules */
+#define ENAB_PWRMD (1<<0) /* Power mode of USB modules */
+/* USB Descriptor Ram Address Register bit fields */
+#define DADR_CFG (1<<31) /* Configuration */
+#define DADR_BSY (1<<30) /* Busy status */
+#define DADR_DADR (0x1FF) /* Descriptor Ram Address */
+/* USB Descriptor RAM/Endpoint Buffer Data Register bit fields */
+#define DDAT_DDAT (0xFF) /* Descriptor Endpoint Buffer */
+/* USB Endpoint Status Register bit fields */
+#define EPSTAT_BCOUNT (0x7F<<16) /* Endpoint FIFO byte count */
+#define EPSTAT_SIP (1<<8) /* Endpoint setup in progress */
+#define EPSTAT_DIR (1<<7) /* Endpoint transfer direction */
+#define EPSTAT_MAX (3<<5) /* Endpoint Max packet size */
+#define EPSTAT_TYP (3<<3) /* Endpoint type */
+#define EPSTAT_ZLPS (1<<2) /* Send zero length packet */
+#define EPSTAT_FLUSH (1<<1) /* Endpoint FIFO Flush */
+#define EPSTAT_STALL (1<<0) /* Force stall */
+/* USB Endpoint FIFO Status Register bit fields */
+#define FSTAT_FRAME_STAT (0xF<<24) /* Frame status bit [0-3] */
+#define FSTAT_ERR (1<<22) /* FIFO error */
+#define FSTAT_UF (1<<21) /* FIFO underflow */
+#define FSTAT_OF (1<<20) /* FIFO overflow */
+#define FSTAT_FR (1<<19) /* FIFO frame ready */
+#define FSTAT_FULL (1<<18) /* FIFO full */
+#define FSTAT_ALRM (1<<17) /* FIFO alarm */
+#define FSTAT_EMPTY (1<<16) /* FIFO empty */
+/* USB Endpoint FIFO Control Register bit fields */
+#define FCTRL_WFR (1<<29) /* Write frame end */
+/* USB Endpoint Interrupt Status Regsiter bit fields */
+#define EPINTR_FIFO_FULL (1<<8) /* fifo full */
+#define EPINTR_FIFO_EMPTY (1<<7) /* fifo empty */
+#define EPINTR_FIFO_ERROR (1<<6) /* fifo error */
+#define EPINTR_FIFO_HIGH (1<<5) /* fifo high */
+#define EPINTR_FIFO_LOW (1<<4) /* fifo low */
+#define EPINTR_MDEVREQ (1<<3) /* multi Device request */
+#define EPINTR_EOT (1<<2) /* fifo end of transfer */
+#define EPINTR_DEVREQ (1<<1) /* Device request */
+#define EPINTR_EOF (1<<0) /* fifo end of frame */
+
+/* Debug macros */
+#ifdef DEBUG
+
+/* #define DEBUG_REQ */
+/* #define DEBUG_TRX */
+/* #define DEBUG_INIT */
+/* #define DEBUG_EP0 */
+/* #define DEBUG_EPX */
+/* #define DEBUG_IRQ */
+/* #define DEBUG_EPIRQ */
+/* #define DEBUG_DUMP */
+#define DEBUG_ERR
+
+#ifdef DEBUG_REQ
+ #define D_REQ(dev, args...) dev_dbg(dev, ## args)
+#else
+ #define D_REQ(dev, args...) do {} while (0)
+#endif /* DEBUG_REQ */
+
+#ifdef DEBUG_TRX
+ #define D_TRX(dev, args...) dev_dbg(dev, ## args)
+#else
+ #define D_TRX(dev, args...) do {} while (0)
+#endif /* DEBUG_TRX */
+
+#ifdef DEBUG_INIT
+ #define D_INI(dev, args...) dev_dbg(dev, ## args)
+#else
+ #define D_INI(dev, args...) do {} while (0)
+#endif /* DEBUG_INIT */
+
+#ifdef DEBUG_EP0
+ static const char *state_name[] = {
+ "EP0_IDLE",
+ "EP0_IN_DATA_PHASE",
+ "EP0_OUT_DATA_PHASE",
+ "EP0_CONFIG",
+ "EP0_STALL"
+ };
+ #define D_EP0(dev, args...) dev_dbg(dev, ## args)
+#else
+ #define D_EP0(dev, args...) do {} while (0)
+#endif /* DEBUG_EP0 */
+
+#ifdef DEBUG_EPX
+ #define D_EPX(dev, args...) dev_dbg(dev, ## args)
+#else
+ #define D_EPX(dev, args...) do {} while (0)
+#endif /* DEBUG_EP0 */
+
+#ifdef DEBUG_IRQ
+ static void dump_intr(const char *label, int irqreg, struct device *dev)
+ {
+ dev_dbg(dev, "<%s> USB_INTR=[%s%s%s%s%s%s%s%s%s]\n", label,
+ (irqreg & INTR_WAKEUP) ? " wake" : "",
+ (irqreg & INTR_MSOF) ? " msof" : "",
+ (irqreg & INTR_SOF) ? " sof" : "",
+ (irqreg & INTR_RESUME) ? " resume" : "",
+ (irqreg & INTR_SUSPEND) ? " suspend" : "",
+ (irqreg & INTR_RESET_STOP) ? " noreset" : "",
+ (irqreg & INTR_RESET_START) ? " reset" : "",
+ (irqreg & INTR_FRAME_MATCH) ? " fmatch" : "",
+ (irqreg & INTR_CFG_CHG) ? " config" : "");
+ }
+#else
+ #define dump_intr(x, y, z) do {} while (0)
+#endif /* DEBUG_IRQ */
+
+#ifdef DEBUG_EPIRQ
+ static void dump_ep_intr(const char *label, int nr, int irqreg, struct device *dev)
+ {
+ dev_dbg(dev, "<%s> EP%d_INTR=[%s%s%s%s%s%s%s%s%s]\n", label, nr,
+ (irqreg & EPINTR_FIFO_FULL) ? " full" : "",
+ (irqreg & EPINTR_FIFO_EMPTY) ? " fempty" : "",
+ (irqreg & EPINTR_FIFO_ERROR) ? " ferr" : "",
+ (irqreg & EPINTR_FIFO_HIGH) ? " fhigh" : "",
+ (irqreg & EPINTR_FIFO_LOW) ? " flow" : "",
+ (irqreg & EPINTR_MDEVREQ) ? " mreq" : "",
+ (irqreg & EPINTR_EOF) ? " eof" : "",
+ (irqreg & EPINTR_DEVREQ) ? " devreq" : "",
+ (irqreg & EPINTR_EOT) ? " eot" : "");
+ }
+#else
+ #define dump_ep_intr(x, y, z, i) do {} while (0)
+#endif /* DEBUG_IRQ */
+
+#ifdef DEBUG_DUMP
+ static void dump_usb_stat(const char *label, struct imx_udc_struct *imx_usb)
+ {
+ int temp = __raw_readl(imx_usb->base + USB_STAT);
+
+ dev_dbg(imx_usb->dev,
+ "<%s> USB_STAT=[%s%s CFG=%d, INTF=%d, ALTR=%d]\n", label,
+ (temp & STAT_RST) ? " reset" : "",
+ (temp & STAT_SUSP) ? " suspend" : "",
+ (temp & STAT_CFG) >> 5,
+ (temp & STAT_INTF) >> 3,
+ (temp & STAT_ALTSET));
+ }
+
+ static void dump_ep_stat(const char *label, struct imx_ep_struct *imx_ep)
+ {
+ int temp = __raw_readl(imx_ep->imx_usb->base + USB_EP_INTR(EP_NO(imx_ep)));
+
+ dev_dbg(imx_ep->imx_usb->dev,
+ "<%s> EP%d_INTR=[%s%s%s%s%s%s%s%s%s]\n", label, EP_NO(imx_ep),
+ (temp & EPINTR_FIFO_FULL) ? " full" : "",
+ (temp & EPINTR_FIFO_EMPTY) ? " fempty" : "",
+ (temp & EPINTR_FIFO_ERROR) ? " ferr" : "",
+ (temp & EPINTR_FIFO_HIGH) ? " fhigh" : "",
+ (temp & EPINTR_FIFO_LOW) ? " flow" : "",
+ (temp & EPINTR_MDEVREQ) ? " mreq" : "",
+ (temp & EPINTR_EOF) ? " eof" : "",
+ (temp & EPINTR_DEVREQ) ? " devreq" : "",
+ (temp & EPINTR_EOT) ? " eot" : "");
+
+ temp = __raw_readl(imx_ep->imx_usb->base + USB_EP_STAT(EP_NO(imx_ep)));
+
+ dev_dbg(imx_ep->imx_usb->dev,
+ "<%s> EP%d_STAT=[%s%s bcount=%d]\n", label, EP_NO(imx_ep),
+ (temp & EPSTAT_SIP) ? " sip" : "",
+ (temp & EPSTAT_STALL) ? " stall" : "",
+ (temp & EPSTAT_BCOUNT) >> 16);
+
+ temp = __raw_readl(imx_ep->imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep)));
+
+ dev_dbg(imx_ep->imx_usb->dev,
+ "<%s> EP%d_FSTAT=[%s%s%s%s%s%s%s]\n", label, EP_NO(imx_ep),
+ (temp & FSTAT_ERR) ? " ferr" : "",
+ (temp & FSTAT_UF) ? " funder" : "",
+ (temp & FSTAT_OF) ? " fover" : "",
+ (temp & FSTAT_FR) ? " fready" : "",
+ (temp & FSTAT_FULL) ? " ffull" : "",
+ (temp & FSTAT_ALRM) ? " falarm" : "",
+ (temp & FSTAT_EMPTY) ? " fempty" : "");
+ }
+
+ static void dump_req(const char *label, struct imx_ep_struct *imx_ep, struct usb_request *req)
+ {
+ int i;
+
+ if (!req || !req->buf) {
+ dev_dbg(imx_ep->imx_usb->dev, "<%s> req or req buf is free\n", label);
+ return;
+ }
+
+ if ((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state == EP0_IN_DATA_PHASE)
+ || (EP_NO(imx_ep) && EP_DIR(imx_ep))) {
+
+ dev_dbg(imx_ep->imx_usb->dev, "<%s> request dump <", label);
+ for (i = 0; i < req->length; i++)
+ printk("%02x-", *((u8 *)req->buf + i));
+ printk(">\n");
+ }
+ }
+
+#else
+ #define dump_ep_stat(x, y) do {} while (0)
+ #define dump_usb_stat(x, y) do {} while (0)
+ #define dump_req(x, y, z) do {} while (0)
+#endif /* DEBUG_DUMP */
+
+#ifdef DEBUG_ERR
+ #define D_ERR(dev, args...) dev_dbg(dev, ## args)
+#else
+ #define D_ERR(dev, args...) do {} while (0)
+#endif
+
+#else
+ #define D_REQ(dev, args...) do {} while (0)
+ #define D_TRX(dev, args...) do {} while (0)
+ #define D_INI(dev, args...) do {} while (0)
+ #define D_EP0(dev, args...) do {} while (0)
+ #define D_EPX(dev, args...) do {} while (0)
+ #define dump_ep_intr(x, y, z, i) do {} while (0)
+ #define dump_intr(x, y, z) do {} while (0)
+ #define dump_ep_stat(x, y) do {} while (0)
+ #define dump_usb_stat(x, y) do {} while (0)
+ #define dump_req(x, y, z) do {} while (0)
+ #define D_ERR(dev, args...) do {} while (0)
+#endif /* DEBUG */
+
+#endif /* __LINUX_USB_GADGET_IMX_H */
diff --git a/drivers/usb/gadget/lh7a40x_udc.c b/drivers/usb/gadget/lh7a40x_udc.c
index c6e7df04c69a..d554b0895603 100644
--- a/drivers/usb/gadget/lh7a40x_udc.c
+++ b/drivers/usb/gadget/lh7a40x_udc.c
@@ -1981,7 +1981,7 @@ static struct lh7a40x_udc memory = {
.ep0 = &memory.ep[0].ep,
.name = driver_name,
.dev = {
- .bus_id = "gadget",
+ .init_name = "gadget",
.release = nop_release,
},
},
diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c
index 3a8879ec2061..43dcf9e1af6b 100644
--- a/drivers/usb/gadget/m66592-udc.c
+++ b/drivers/usb/gadget/m66592-udc.c
@@ -1546,8 +1546,6 @@ static void nop_completion(struct usb_ep *ep, struct usb_request *r)
{
}
-#define resource_len(r) (((r)->end - (r)->start) + 1)
-
static int __init m66592_probe(struct platform_device *pdev)
{
struct resource *res;
@@ -1560,11 +1558,10 @@ static int __init m66592_probe(struct platform_device *pdev)
int ret = 0;
int i;
- res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
- (char *)udc_name);
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
ret = -ENODEV;
- pr_err("platform_get_resource_byname error.\n");
+ pr_err("platform_get_resource error.\n");
goto clean_up;
}
@@ -1575,7 +1572,7 @@ static int __init m66592_probe(struct platform_device *pdev)
goto clean_up;
}
- reg = ioremap(res->start, resource_len(res));
+ reg = ioremap(res->start, resource_size(res));
if (reg == NULL) {
ret = -ENOMEM;
pr_err("ioremap error.\n");
diff --git a/drivers/usb/gadget/net2280.c b/drivers/usb/gadget/net2280.c
index 8ae70de2c37d..12c6d83b218c 100644
--- a/drivers/usb/gadget/net2280.c
+++ b/drivers/usb/gadget/net2280.c
@@ -669,7 +669,7 @@ fill_dma_desc (struct net2280_ep *ep, struct net2280_request *req, int valid)
/* 2280 may be polling VALID_BIT through ep->dma->dmadesc */
wmb ();
- td->dmacount = cpu_to_le32p (&dmacount);
+ td->dmacount = cpu_to_le32(dmacount);
}
static const u32 dmactl_default =
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 34e9e393f929..57d9641c6bf8 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -3006,7 +3006,7 @@ cleanup1:
cleanup0:
if (xceiv)
- put_device(xceiv->dev);
+ otg_put_transceiver(xceiv);
if (cpu_is_omap16xx() || cpu_is_omap24xx()) {
clk_disable(hhc_clk);
@@ -3034,7 +3034,7 @@ static int __exit omap_udc_remove(struct platform_device *pdev)
pullup_disable(udc);
if (udc->transceiver) {
- put_device(udc->transceiver->dev);
+ otg_put_transceiver(udc->transceiver);
udc->transceiver = NULL;
}
omap_writew(0, UDC_SYSCON1);
diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c
index 8c5026be79d4..9b36205c5759 100644
--- a/drivers/usb/gadget/pxa25x_udc.c
+++ b/drivers/usb/gadget/pxa25x_udc.c
@@ -1833,7 +1833,7 @@ static struct pxa25x_udc memory = {
.ep0 = &memory.ep[0].ep,
.name = driver_name,
.dev = {
- .bus_id = "gadget",
+ .init_name = "gadget",
.release = nop_release,
},
},
@@ -2198,7 +2198,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev)
udc_disable(dev);
udc_reinit(dev);
- dev->vbus = is_vbus_present();
+ dev->vbus = !!is_vbus_present();
/* irq setup after old hardware state is cleaned up */
retval = request_irq(irq, pxa25x_udc_irq,
diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 944e4ff641df..990f40f988d4 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -430,7 +430,6 @@ static void pio_irq_enable(struct pxa_ep *ep)
/**
* pio_irq_disable - Disables irq generation for one endpoint
* @ep: udc endpoint
- * @index: endpoint number
*/
static void pio_irq_disable(struct pxa_ep *ep)
{
@@ -586,7 +585,6 @@ static void inc_ep_stats_reqs(struct pxa_ep *ep, int is_in)
* inc_ep_stats_bytes - Update ep stats counts
* @ep: physical endpoint
* @count: bytes transfered on endpoint
- * @req: usb request
* @is_in: ep direction (USB_DIR_IN or 0)
*/
static void inc_ep_stats_bytes(struct pxa_ep *ep, int count, int is_in)
@@ -2162,7 +2160,7 @@ static struct pxa_udc memory = {
.ep0 = &memory.udc_usb_ep[0].usb_ep,
.name = driver_name,
.dev = {
- .bus_id = "gadget",
+ .init_name = "gadget",
},
},
diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c
index 8d8d65165983..9a2b8920532d 100644
--- a/drivers/usb/gadget/s3c2410_udc.c
+++ b/drivers/usb/gadget/s3c2410_udc.c
@@ -36,6 +36,7 @@
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
+#include <linux/gpio.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
@@ -51,7 +52,6 @@
#include <mach/irqs.h>
#include <mach/hardware.h>
-#include <mach/regs-gpio.h>
#include <plat/regs-udc.h>
#include <plat/udc.h>
@@ -1510,11 +1510,7 @@ static irqreturn_t s3c2410_udc_vbus_irq(int irq, void *_dev)
dprintk(DEBUG_NORMAL, "%s()\n", __func__);
- /* some cpus cannot read from an line configured to IRQ! */
- s3c2410_gpio_cfgpin(udc_info->vbus_pin, S3C2410_GPIO_INPUT);
- value = s3c2410_gpio_getpin(udc_info->vbus_pin);
- s3c2410_gpio_cfgpin(udc_info->vbus_pin, S3C2410_GPIO_SFN2);
-
+ value = gpio_get_value(udc_info->vbus_pin) ? 1 : 0;
if (udc_info->vbus_pin_inverted)
value = !value;
@@ -1727,7 +1723,7 @@ static struct s3c2410_udc memory = {
.ep0 = &memory.ep[0].ep,
.name = gadget_name,
.dev = {
- .bus_id = "gadget",
+ .init_name = "gadget",
},
},
@@ -1802,7 +1798,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
struct s3c2410_udc *udc = &memory;
struct device *dev = &pdev->dev;
int retval;
- unsigned int irq;
+ int irq;
dev_dbg(dev, "%s()\n", __func__);
@@ -1861,7 +1857,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
/* irq setup after old hardware state is cleaned up */
retval = request_irq(IRQ_USBD, s3c2410_udc_irq,
- IRQF_DISABLED, gadget_name, udc);
+ IRQF_DISABLED, gadget_name, udc);
if (retval != 0) {
dev_err(dev, "cannot get irq %i, err %d\n", IRQ_USBD, retval);
@@ -1872,17 +1868,28 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
dev_dbg(dev, "got irq %i\n", IRQ_USBD);
if (udc_info && udc_info->vbus_pin > 0) {
- irq = s3c2410_gpio_getirq(udc_info->vbus_pin);
+ retval = gpio_request(udc_info->vbus_pin, "udc vbus");
+ if (retval < 0) {
+ dev_err(dev, "cannot claim vbus pin\n");
+ goto err_int;
+ }
+
+ irq = gpio_to_irq(udc_info->vbus_pin);
+ if (irq < 0) {
+ dev_err(dev, "no irq for gpio vbus pin\n");
+ goto err_gpio_claim;
+ }
+
retval = request_irq(irq, s3c2410_udc_vbus_irq,
IRQF_DISABLED | IRQF_TRIGGER_RISING
| IRQF_TRIGGER_FALLING | IRQF_SHARED,
gadget_name, udc);
if (retval != 0) {
- dev_err(dev, "can't get vbus irq %i, err %d\n",
+ dev_err(dev, "can't get vbus irq %d, err %d\n",
irq, retval);
retval = -EBUSY;
- goto err_int;
+ goto err_gpio_claim;
}
dev_dbg(dev, "got irq %i\n", irq);
@@ -1902,6 +1909,9 @@ static int s3c2410_udc_probe(struct platform_device *pdev)
return 0;
+err_gpio_claim:
+ if (udc_info && udc_info->vbus_pin > 0)
+ gpio_free(udc_info->vbus_pin);
err_int:
free_irq(IRQ_USBD, udc);
err_map:
@@ -1927,7 +1937,7 @@ static int s3c2410_udc_remove(struct platform_device *pdev)
debugfs_remove(udc->regs_info);
if (udc_info && udc_info->vbus_pin > 0) {
- irq = s3c2410_gpio_getirq(udc_info->vbus_pin);
+ irq = gpio_to_irq(udc_info->vbus_pin);
free_irq(irq, udc);
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.