diff options
| -rw-r--r-- | arch/mips/Kconfig | 5 | ||||
| -rw-r--r-- | arch/mips/au1000/common/Makefile | 1 | ||||
| -rw-r--r-- | arch/mips/au1000/common/usbdev.c | 1552 | ||||
| -rw-r--r-- | arch/mips/au1000/db1x00/board_setup.c | 5 | ||||
| -rw-r--r-- | arch/mips/au1000/mtx-1/board_setup.c | 8 | ||||
| -rw-r--r-- | arch/mips/au1000/pb1000/board_setup.c | 10 | ||||
| -rw-r--r-- | arch/mips/au1000/pb1100/board_setup.c | 6 | ||||
| -rw-r--r-- | arch/mips/au1000/pb1500/board_setup.c | 9 | ||||
| -rw-r--r-- | arch/mips/configs/pb1100_defconfig | 1 | ||||
| -rw-r--r-- | arch/mips/configs/pb1500_defconfig | 1 | ||||
| -rw-r--r-- | include/asm-mips/mach-au1x00/au1000_usbdev.h | 73 |
11 files changed, 9 insertions, 1662 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 731b942a824..14af6cce2fa 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1010,11 +1010,6 @@ endchoice config ARC32 bool -config AU1X00_USB_DEVICE - bool - depends on MIPS_PB1500 || MIPS_PB1100 || MIPS_PB1000 - default n - config BOOT_ELF32 bool diff --git a/arch/mips/au1000/common/Makefile b/arch/mips/au1000/common/Makefile index bf682f50b85..4c35525edb4 100644 --- a/arch/mips/au1000/common/Makefile +++ b/arch/mips/au1000/common/Makefile @@ -10,6 +10,5 @@ obj-y += prom.o irq.o puts.o time.o reset.o \ au1xxx_irqmap.o clocks.o platform.o power.o setup.o \ sleeper.o cputable.o dma.o dbdma.o gpio.o -obj-$(CONFIG_AU1X00_USB_DEVICE) += usbdev.o obj-$(CONFIG_KGDB) += dbg_io.o obj-$(CONFIG_PCI) += pci.o diff --git a/arch/mips/au1000/common/usbdev.c b/arch/mips/au1000/common/usbdev.c deleted file mode 100644 index 70dc82e536c..00000000000 --- a/arch/mips/au1000/common/usbdev.c +++ /dev/null @@ -1,1552 +0,0 @@ -/* - * BRIEF MODULE DESCRIPTION - * Au1000 USB Device-Side (device layer) - * - * Copyright 2001-2002 MontaVista Software Inc. - * Author: MontaVista Software, Inc. - * stevel@mvista.com or source@mvista.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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - */ -#include <linux/kernel.h> -#include <linux/ioport.h> -#include <linux/sched.h> -#include <linux/signal.h> -#include <linux/errno.h> -#include <linux/poll.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/fcntl.h> -#include <linux/module.h> -#include <linux/spinlock.h> -#include <linux/list.h> -#include <linux/smp_lock.h> -#define DEBUG -#include <linux/usb.h> - -#include <asm/io.h> -#include <asm/uaccess.h> -#include <asm/irq.h> -#include <asm/mipsregs.h> -#include <asm/au1000.h> -#include <asm/au1000_dma.h> -#include <asm/au1000_usbdev.h> - -#ifdef DEBUG -#undef VDEBUG -#ifdef VDEBUG -#define vdbg(fmt, arg...) printk(KERN_DEBUG __FILE__ ": " fmt "\n" , ## arg) -#else -#define vdbg(fmt, arg...) do {} while (0) -#endif -#else -#define vdbg(fmt, arg...) do {} while (0) -#endif - -#define ALLOC_FLAGS (in_interrupt () ? GFP_ATOMIC : GFP_KERNEL) - -#define EP_FIFO_DEPTH 8 - -typedef enum { - SETUP_STAGE = 0, - DATA_STAGE, - STATUS_STAGE -} ep0_stage_t; - -typedef struct { - int read_fifo; - int write_fifo; - int ctrl_stat; - int read_fifo_status; - int write_fifo_status; -} endpoint_reg_t; - -typedef struct { - usbdev_pkt_t *head; - usbdev_pkt_t *tail; - int count; -} pkt_list_t; - -typedef struct { - int active; - struct usb_endpoint_descriptor *desc; - endpoint_reg_t *reg; - /* Only one of these are used, unless this is the control ep */ - pkt_list_t inlist; - pkt_list_t outlist; - unsigned int indma, outdma; /* DMA channel numbers for IN, OUT */ - /* following are extracted from endpoint descriptor for easy access */ - int max_pkt_size; - int type; - int direction; - /* WE assign endpoint addresses! */ - int address; - spinlock_t lock; -} endpoint_t; - - -static struct usb_dev { - endpoint_t ep[6]; - ep0_stage_t ep0_stage; - - struct usb_device_descriptor * dev_desc; - struct usb_interface_descriptor* if_desc; - struct usb_config_descriptor * conf_desc; - u8 * full_conf_desc; - struct usb_string_descriptor * str_desc[6]; - - /* callback to function layer */ - void (*func_cb)(usbdev_cb_type_t type, unsigned long arg, - void *cb_data); - void* cb_data; - - usbdev_state_t state; // device state - int suspended; // suspended flag - int address; // device address - int interface; - int num_ep; - u8 alternate_setting; - u8 configuration; // configuration value - int remote_wakeup_en; -} usbdev; - - -static endpoint_reg_t ep_reg[] = { - // FIFO's 0 and 1 are EP0 default control - {USBD_EP0RD, USBD_EP0WR, USBD_EP0CS, USBD_EP0RDSTAT, USBD_EP0WRSTAT }, - {0}, - // FIFO 2 is EP2, IN - { -1, USBD_EP2WR, USBD_EP2CS, -1, USBD_EP2WRSTAT }, - // FIFO 3 is EP3, IN - { -1, USBD_EP3WR, USBD_EP3CS, -1, USBD_EP3WRSTAT }, - // FIFO 4 is EP4, OUT - {USBD_EP4RD, -1, USBD_EP4CS, USBD_EP4RDSTAT, -1 }, - // FIFO 5 is EP5, OUT - {USBD_EP5RD, -1, USBD_EP5CS, USBD_EP5RDSTAT, -1 } -}; - -static struct { - unsigned int id; - const char *str; -} ep_dma_id[] = { - { DMA_ID_USBDEV_EP0_TX, "USBDev EP0 IN" }, - { DMA_ID_USBDEV_EP0_RX, "USBDev EP0 OUT" }, - { DMA_ID_USBDEV_EP2_TX, "USBDev EP2 IN" }, - { DMA_ID_USBDEV_EP3_TX, "USBDev EP3 IN" }, - { DMA_ID_USBDEV_EP4_RX, "USBDev EP4 OUT" }, - { DMA_ID_USBDEV_EP5_RX, "USBDev EP5 OUT" } -}; - -#define DIR_OUT 0 -#define DIR_IN (1<<3) - -#define CONTROL_EP USB_ENDPOINT_XFER_CONTROL -#define BULK_EP USB_ENDPOINT_XFER_BULK - -static inline endpoint_t * -epaddr_to_ep(struct usb_dev* dev, int ep_addr) -{ - if (ep_addr >= 0 && ep_addr < 2) - return &dev->ep[0]; - if (ep_addr < 6) - return &dev->ep[ep_addr]; - return NULL; -} - -static const char* std_req_name[] = { - "GET_STATUS", - "CLEAR_FEATURE", - "RESERVED", - "SET_FEATURE", - "RESERVED", - "SET_ADDRESS", - "GET_DESCRIPTOR", - "SET_DESCRIPTOR", - "GET_CONFIGURATION", - "SET_CONFIGURATION", - "GET_INTERFACE", - "SET_INTERFACE", - "SYNCH_FRAME" -}; - -static inline const char* -get_std_req_name(int req) -{ - return (req >= 0 && req <= 12) ? std_req_name[req] : "UNKNOWN"; -} - -#if 0 -static void -dump_setup(struct usb_ctrlrequest* s) -{ - dbg("%s: requesttype=%d", __FUNCTION__, s->requesttype); - dbg("%s: request=%d %s", __FUNCTION__, s->request, - get_std_req_name(s->request)); - dbg("%s: value=0x%04x", __FUNCTION__, s->wValue); - dbg("%s: index=%d", __FUNCTION__, s->index); - dbg("%s: length=%d", __FUNCTION__, s->length); -} -#endif - -static inline usbdev_pkt_t * -alloc_packet(endpoint_t * ep, int data_size, void* data) -{ - usbdev_pkt_t* pkt = kmalloc(sizeof(usbdev_pkt_t) + data_size, - ALLOC_FLAGS); - if (!pkt) - return NULL; - pkt->ep_addr = ep->address; - pkt->size = data_size; - pkt->status = 0; - pkt->next = NULL; - if (data) - memcpy(pkt->payload, data, data_size); - - return pkt; -} - - -/* - * Link a packet to the tail of the enpoint's packet list. - * EP spinlock must be held when calling. - */ -static void -link_tail(endpoint_t * ep, pkt_list_t * list, usbdev_pkt_t * pkt) -{ - if (!list->tail) { - list->head = list->tail = pkt; - list->count = 1; - } else { - list->tail->next = pkt; - list->tail = pkt; - list->count++; - } -} - -/* - * Unlink and return a packet from the head of the given packet - * list. It is the responsibility of the caller to free the packet. - * EP spinlock must be held when calling. - */ -static usbdev_pkt_t * -unlink_head(pkt_list_t * list) -{ - usbdev_pkt_t *pkt; - - pkt = list->head; - if (!pkt || !list->count) { - return NULL; - } - - list->head = pkt->next; - if (!list->head) { - list->head = list->tail = NULL; - list->count = 0; - } else - list->count--; - - return pkt; -} - -/* - * Create and attach a new packet to the tail of the enpoint's - * packet list. EP spinlock must be held when calling. - */ -static usbdev_pkt_t * -add_packet(endpoint_t * ep, pkt_list_t * list, int size) -{ - usbdev_pkt_t *pkt = alloc_packet(ep, size, NULL); - if (!pkt) - return NULL; - - link_tail(ep, list, pkt); - return pkt; -} - - -/* - * Unlink and free a packet from the head of the enpoint's - * packet list. EP spinlock must be held when calling. - */ -static inline void -free_packet(pkt_list_t * list) -{ - kfree(unlink_head(list)); -} - -/* EP spinlock must be held when calling. */ -static inline void -flush_pkt_list(pkt_list_t * list) -{ - while (list->count) - free_packet(list); -} - -/* EP spinlock must be held when calling */ -static inline void -flush_write_fifo(endpoint_t * ep) -{ - if (ep->reg->write_fifo_status >= 0) { - au_writel(USBDEV_FSTAT_FLUSH | USBDEV_FSTAT_UF | - USBDEV_FSTAT_OF, - ep->reg->write_fifo_status); - //udelay(100); - //au_writel(USBDEV_FSTAT_UF | USBDEV_FSTAT_OF, - // ep->reg->write_fifo_status); - } -} - -/* EP spinlock must be held when calling */ -static inline void -flush_read_fifo(endpoint_t * ep) -{ - if (ep->reg->read_fifo_status >= 0) { - au_writel(USBDEV_FSTAT_FLUSH | USBDEV_FSTAT_UF | - USBDEV_FSTAT_OF, - ep->reg->read_fifo_status); - //udelay(100); - //au_writel(USBDEV_FSTAT_UF | USBDEV_FSTAT_OF, - // ep->reg->read_fifo_status); - } -} - - -/* EP spinlock must be held when calling. */ -static void -endpoint_flush(endpoint_t * ep) -{ - // First, flush all packets - flush_pkt_list(&ep->inlist); - flush_pkt_list(&ep->outlist); - - // Now flush the endpoint's h/w FIFO(s) - flush_write_fifo(ep); - flush_read_fifo(ep); -} - -/* EP spinlock must be held when calling. */ -static void -endpoint_stall(endpoint_t * ep) -{ - u32 cs; - - warn("%s", __FUNCTION__); - - cs = au_readl(ep->reg->ctrl_stat) | USBDEV_CS_STALL; - au_writel(cs, ep->reg->ctrl_stat); -} - -/* EP spinlock must be held when calling. */ -static void -endpoint_unstall(endpoint_t * ep) -{ - u32 cs; - - warn("%s", __FUNCTION__); - - cs = au_readl(ep->reg->ctrl_stat) & ~USBDEV_CS_STALL; - au_writel(cs, ep->reg->ctrl_stat); -} - -static void -endpoint_reset_datatoggle(endpoint_t * ep) -{ - // FIXME: is this possible? -} - - -/* EP spinlock must be held when calling. */ -static int -endpoint_fifo_read(endpoint_t * ep) -{ - int read_count = 0; - u8 *bufptr; - usbdev_pkt_t *pkt = ep->outlist.tail; - - if (!pkt) - return -EINVAL; - - bufptr = &pkt->payload[pkt->size]; - while (au_readl(ep->reg->read_fifo_status) & USBDEV_FSTAT_FCNT_MASK) { - *bufptr++ = au_readl(ep->reg->read_fifo) & 0xff; - read_count++; - pkt->size++; - } - - return read_count; -} - -#if 0 -/* EP spinlock must be held when calling. */ -static int -endpoint_fifo_write(endpoint_t * ep, int index) -{ - int write_count = 0; - u8 *bufptr; - usbdev_pkt_t *pkt = ep->inlist.head; - - if (!pkt) - return -EINVAL; - - bufptr = &pkt->payload[index]; - while ((au_readl(ep->reg->write_fifo_status) & - USBDEV_FSTAT_FCNT_MASK) < EP_FIFO_DEPTH) { - if (bufptr < pkt->payload + pkt->size) { - au_writel(*bufptr++, ep->reg->write_fifo); - write_count++; - } else { - break; - } - } - - return write_count; -} -#endif - -/* - * This routine is called to restart transmission of a packet. - * The endpoint's TSIZE must be set to the new packet's size, - * and DMA to the write FIFO needs to be restarted. - * EP spinlock must be held when calling. - */ -static void -kickstart_send_packet(endpoint_t * ep) -{ - u32 cs; - usbdev_pkt_t *pkt = ep->inlist.head; - - vdbg("%s: ep%d, pkt=%p", __FUNCTION__, ep->address, pkt); - - if (!pkt) { - err("%s: head=NULL! list->count=%d", __FUNCTION__, - ep->inlist.count); - return; - } - - dma_cache_wback_inv((unsigned long)pkt->payload, pkt->size); - - /* - * make sure FIFO is empty - */ - flush_write_fifo(ep); - - cs = au_readl(ep->reg->ctrl_stat) & USBDEV_CS_STALL; - cs |= (pkt->size << USBDEV_CS_TSIZE_BIT); - au_writel(cs, ep->reg->ctrl_stat); - - if (get_dma_active_buffer(ep->indma) == 1) { - set_dma_count1(ep->indma, pkt->size); - set_dma_addr1(ep->indma, virt_to_phys(pkt->payload)); - enable_dma_buffer1(ep->indma); // reenable - } else { - set_dma_count0(ep->indma, pkt->size); - set_dma_addr0(ep->indma, virt_to_phys(pkt->payload)); - enable_dma_buffer0(ep->indma); // reenable - } - if (dma_halted(ep->indma)) - start_dma(ep->indma); -} - - -/* - * This routine is called when a packet in the inlist has been - * completed. Frees the completed packet and starts sending the - * next. EP spinlock must be held when calling. - */ -static usbdev_pkt_t * -send_packet_complete(endpoint_t * ep) -{ - usbdev_pkt_t *pkt = unlink_head(&ep->inlist); - - if (pkt) { - pkt->status = - (au_readl(ep->reg->ctrl_stat) & USBDEV_CS_NAK) ? - PKT_STATUS_NAK : PKT_STATUS_ACK; - - vdbg("%s: ep%d, %s pkt=%p, list count=%d", __FUNCTION__, - ep->address, (pkt->status & PKT_STATUS_NAK) ? - "NAK" : "ACK", pkt, ep->inlist.count); - } - - /* - * The write fifo should already be drained if things are - * working right, but flush it anyway just in case. - */ - flush_write_fifo(ep); - - // begin transmitting next packet in the inlist - if (ep->inlist.count) { - kickstart_send_packet(ep); - } - - return pkt; -} - -/* - * Add a new packet to the tail of the given ep's packet - * inlist. The transmit complete interrupt frees packets from - * the head of this list. EP spinlock must be held when calling. - */ -static int -send_packet(struct usb_dev* dev, usbdev_pkt_t *pkt, int async) -{ - pkt_list_t *list; - endpoint_t* ep; - - if (!pkt || !(ep = epaddr_to_ep(dev, pkt->ep_addr))) - return -EINVAL; - - if (!pkt->size) - return 0; - - list = &ep->inlist; - - if (!async && list->count) { - halt_dma(ep->indma); - flush_pkt_list(list); - } - - link_tail(ep, list, pkt); - - vdbg("%s: ep%d, pkt=%p, size=%d, list count=%d", __FUNCTION__, - ep->address, pkt, pkt->size, list->count); - - if (list->count == 1) { - /* - * if the packet count is one, it means the list was empty, - * and no more data will go out this ep until we kick-start - * it again. - */ - kickstart_send_packet(ep); - } - - return pkt->size; -} - -/* - * This routine is called to restart reception of a packet. - * EP spinlock must be held when calling. - */ -static void -kickstart_receive_packet(endpoint_t * ep) -{ - usbdev_pkt_t *pkt; - - // get and link a new packet for next reception - if (!(pkt = add_packet(ep, &ep->outlist, ep->max_pkt_size))) { - err("%s: could not alloc new packet", __FUNCTION__); - return; - } - - if (get_dma_active_buffer(ep->outdma) == 1) { - clear_dma_done1(ep->outdma); - set_dma_count1(ep->outdma, ep->max_pkt_size); - set_dma_count0(ep->outdma, 0); - set_dma_addr1(ep->outdma, virt_to_phys(pkt->payload)); - enable_dma_buffer1(ep->outdma); // reenable - } else { - clear_dma_done0(ep->outdma); - set_dma_count0(ep->outdma, ep->max_pkt_size); - set_dma_count1(ep->outdma, 0); - set_dma_addr0(ep->outdma, virt_to_phys(pkt->payload)); - enable_dma_buffer0(ep->outdma); // reenable - } - if (dma_halted(ep->outdma)) - start_dma(ep->outdma); -} - - -/* - * This routine is called when a packet in the outlist has been - * completed (received) and we need to prepare for a new packet - * to be received. Halts DMA and computes the packet size from the - * remaining DMA counter. Then prepares a new packet for reception - * and restarts DMA. FIXME: what if another packet comes in - * on top of the completed packet? Counter would be wrong. - * EP spinlock must be held when calling. - */ -static usbdev_pkt_t * -receive_packet_complete(endpoint_t * ep) -{ - usbdev_pkt_t *pkt = ep->outlist.tail; - u32 cs; - - halt_dma(ep->outdma); - - cs = au_readl(ep->reg->ctrl_stat); - - if (!pkt) - return NULL; - - pkt->size = ep->max_pkt_size - get_dma_residue(ep->outdma); - if (pkt->size) - dma_cache_inv((unsigned long)pkt->payload, pkt->size); - /* - * need to pull out any remaining bytes in the FIFO. - */ - endpoint_fifo_read(ep); - /* - * should be drained now, but flush anyway just in case. - */ - flush_read_fifo(ep); - - pkt->status = (cs & USBDEV_CS_NAK) ? PKT_STATUS_NAK : PKT_STATUS_ACK; - if (ep->address == 0 && (cs & USBDEV_CS_SU)) - pkt->status |= PKT_STATUS_SU; - - vdbg("%s: ep%d, %s pkt=%p, size=%d", __FUNCTION__, - ep->address, (pkt->status & PKT_STATUS_NAK) ? - "NAK" : "ACK", pkt, pkt->size); - - kickstart_receive_packet(ep); - - return pkt; -} - - -/* - **************************************************************************** - * Here starts the standard device request handlers. They are - * all called by do_setup() via a table of function pointers. - **************************************************************************** - */ - -static ep0_stage_t -do_get_status(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - switch (setup->bRequestType) { - case 0x80: // Device - // FIXME: send device status - break; - case 0x81: // Interface - // FIXME: send interface status - break; - case 0x82: // End Point - // FIXME: send endpoint status - break; - default: - // Invalid Command - endpoint_stall(&dev->ep[0]); // Stall End Point 0 - break; - } - - return STATUS_STAGE; -} - -static ep0_stage_t -do_clear_feature(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - switch (setup->bRequestType) { - case 0x00: // Device - if ((le16_to_cpu(setup->wValue) & 0xff) == 1) - dev->remote_wakeup_en = 0; - else - endpoint_stall(&dev->ep[0]); - break; - case 0x02: // End Point - if ((le16_to_cpu(setup->wValue) & 0xff) == 0) { - endpoint_t *ep = - epaddr_to_ep(dev, - le16_to_cpu(setup->wIndex) & 0xff); - - endpoint_unstall(ep); - endpoint_reset_datatoggle(ep); - } else - endpoint_stall(&dev->ep[0]); - break; - } - - return SETUP_STAGE; -} - -static ep0_stage_t -do_reserved(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - // Invalid request, stall End Point 0 - endpoint_stall(&dev->ep[0]); - return SETUP_STAGE; -} - -static ep0_stage_t -do_set_feature(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - switch (setup->bRequestType) { - case 0x00: // Device - if ((le16_to_cpu(setup->wValue) & 0xff) == 1) - dev->remote_wakeup_en = 1; - else - endpoint_stall(&dev->ep[0]); - break; - case 0x02: // End Point - if ((le16_to_cpu(setup->wValue) & 0xff) == 0) { - endpoint_t *ep = - epaddr_to_ep(dev, - le16_to_cpu(setup->wIndex) & 0xff); - - endpoint_stall(ep); - } else - endpoint_stall(&dev->ep[0]); - break; - } - - return SETUP_STAGE; -} - -static ep0_stage_t -do_set_address(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - int new_state = dev->state; - int new_addr = le16_to_cpu(setup->wValue); - - dbg("%s: our address=%d", __FUNCTION__, new_addr); - - if (new_addr > 127) { - // usb spec doesn't tell us what to do, so just go to - // default state - new_state = DEFAULT; - dev->address = 0; - } else if (dev->address != new_addr) { - dev->address = new_addr; - new_state = ADDRESS; - } - - if (dev->state != new_state) { - dev->state = new_state; - /* inform function layer of usbdev state change */ - dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data); - } - - return SETUP_STAGE; -} - -static ep0_stage_t -do_get_descriptor(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - int strnum, desc_len = le16_to_cpu(setup->wLength); - - switch (le16_to_cpu(setup->wValue) >> 8) { - case USB_DT_DEVICE: - // send device descriptor! - desc_len = desc_len > dev->dev_desc->bLength ? - dev->dev_desc->bLength : desc_len; - dbg("sending device desc, size=%d", desc_len); - send_packet(dev, alloc_packet(&dev->ep[0], desc_len, - dev->dev_desc), 0); - break; - case USB_DT_CONFIG: - // If the config descr index in low-byte of - // setup->wValue is valid, send config descr, - // otherwise stall ep0. - if ((le16_to_cpu(setup->wValue) & 0xff) == 0) { - // send config descriptor! - if (desc_len <= USB_DT_CONFIG_SIZE) { - dbg("sending partial config desc, size=%d", - desc_len); - send_packet(dev, - alloc_packet(&dev->ep[0], - desc_len, - dev->conf_desc), - 0); - } else { - int len = le16_to_cpu(dev->conf_desc->wTotalLength); - dbg("sending whole config desc," - " size=%d, our size=%d", desc_len, len); - desc_len = desc_len > len ? len : desc_len; - send_packet(dev, - alloc_packet(&dev->ep[0], - desc_len, - dev->full_conf_desc), - 0); - } - } else - endpoint_stall(&dev->ep[0]); - break; - case USB_DT_STRING: - // If the string descr index in low-byte of setup->wValue - // is valid, send string descr, otherwise stall ep0. - strnum = le16_to_cpu(setup->wValue) & 0xff; - if (strnum >= 0 && strnum < 6) { - struct usb_string_descriptor *desc = - dev->str_desc[strnum]; - desc_len = desc_len > desc->bLength ? - desc->bLength : desc_len; - dbg("sending string desc %d", strnum); - send_packet(dev, - alloc_packet(&dev->ep[0], desc_len, - desc), 0); - } else - endpoint_stall(&dev->ep[0]); - break; - default: - // Invalid request - err("invalid get desc=%d, stalled", - le16_to_cpu(setup->wValue) >> 8); - endpoint_stall(&dev->ep[0]); // Stall endpoint 0 - break; - } - - return STATUS_STAGE; -} - -static ep0_stage_t -do_set_descriptor(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - // TODO: implement - // there will be an OUT data stage (the descriptor to set) - return DATA_STAGE; -} - -static ep0_stage_t -do_get_configuration(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - // send dev->configuration - dbg("sending config"); - send_packet(dev, alloc_packet(&dev->ep[0], 1, &dev->configuration), - 0); - return STATUS_STAGE; -} - -static ep0_stage_t -do_set_configuration(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - // set active config to low-byte of setup->wValue - dev->configuration = le16_to_cpu(setup->wValue) & 0xff; - dbg("set config, config=%d", dev->configuration); - if (!dev->configuration && dev->state > DEFAULT) { - dev->state = ADDRESS; - /* inform function layer of usbdev state change */ - dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data); - } else if (dev->configuration == 1) { - dev->state = CONFIGURED; - /* inform function layer of usbdev state change */ - dev->func_cb(CB_NEW_STATE, dev->state, dev->cb_data); - } else { - // FIXME: "respond with request error" - how? - } - - return SETUP_STAGE; -} - -static ep0_stage_t -do_get_interface(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - // interface must be zero. - if ((le16_to_cpu(setup->wIndex) & 0xff) || dev->state == ADDRESS) { - // FIXME: respond with "request error". how? - } else if (dev->state == CONFIGURED) { - // send dev->alternate_setting - dbg("sending alt setting"); - send_packet(dev, alloc_packet(&dev->ep[0], 1, - &dev->alternate_setting), 0); - } - - return STATUS_STAGE; - -} - -static ep0_stage_t -do_set_interface(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - if (dev->state == ADDRESS) { - // FIXME: respond with "request error". how? - } else if (dev->state == CONFIGURED) { - dev->interface = le16_to_cpu(setup->wIndex) & 0xff; - dev->alternate_setting = - le16_to_cpu(setup->wValue) & 0xff; - // interface and alternate_setting must be zero - if (dev->interface || dev->alternate_setting) { - // FIXME: respond with "request error". how? - } - } - - return SETUP_STAGE; -} - -static ep0_stage_t -do_synch_frame(struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - // TODO - return SETUP_STAGE; -} - -typedef ep0_stage_t (*req_method_t)(struct usb_dev* dev, - struct usb_ctrlrequest* setup); - - -/* Table of the standard device request handlers */ -static const req_method_t req_method[] = { - do_get_status, - do_clear_feature, - do_reserved, - do_set_feature, - do_reserved, - do_set_address, - do_get_descriptor, - do_set_descriptor, - do_get_configuration, - do_set_configuration, - do_get_interface, - do_set_interface, - do_synch_frame -}; - - -// SETUP packet request dispatcher -static void -do_setup (struct usb_dev* dev, struct usb_ctrlrequest* setup) -{ - req_method_t m; - - dbg("%s: req %d %s", __FUNCTION__, setup->bRequestType, - get_std_req_name(setup->bRequestType)); - - if ((setup->bRequestType & USB_TYPE_MASK) != USB_TYPE_STANDARD || - (setup->bRequestType & USB_RECIP_MASK) != USB_RECIP_DEVICE) { - err("%s: invalid requesttype 0x%02x", __FUNCTION__, - setup->bRequestType); - return; - } - - if ((setup->bRequestType & 0x80) == USB_DIR_OUT && setup->wLength) - dbg("%s: OUT phase! length=%d", __FUNCTION__, setup->wLength); - - if (setup->bRequestType < sizeof(req_method)/sizeof(req_method_t)) - m = req_method[setup->bRequestType]; - else - m = do_reserved; - - dev->ep0_stage = (*m)(dev, setup); -} - -/* - * A SETUP, DATA0, or DATA1 packet has been received - * on the default control endpoint's fifo. - */ -static void -process_ep0_receive (struct usb_dev* dev) -{ - endpoint_t *ep0 = &dev->ep[0]; - usbdev_pkt_t *pkt; - - spin_lock(&ep0->lock); - - // complete packet and prepare a new packet - pkt = receive_packet_complete(ep0); - if (!pkt) { - // FIXME: should put a warn/err here. - spin_unlock(&ep0->lock); - return; - } - - // unlink immediately from endpoint. - unlink_head(&ep0->outlist); - - // override current stage if h/w says it's a setup packet - if (pkt->status & PKT_STATUS_SU) - dev->ep0_stage = SETUP_STAGE; - - switch (dev->ep0_stage) { - case SETUP_STAGE: - vdbg("SU bit is %s in setup stage", - (pkt->status & PKT_STATUS_SU) ? "set" : "not set"); - - if (pkt->size == sizeof(struct usb_ctrlrequest)) { -#ifdef VDEBUG - if (pkt->status & PKT_STATUS_ACK) - vdbg("received SETUP"); - else - vdbg("received NAK SETUP"); -#endif - do_setup(dev, (struct usb_ctrlrequest*)pkt->payload); - } else - err("%s: wrong size SETUP received", __FUNCTION__); - break; - case DATA_STAGE: - /* - * this setup has an OUT data stage. Of the standard - * device requests, only set_descriptor has this stage, - * so this packet is that descriptor. TODO: drop it for - * now, set_descriptor not implemented. - * - * Need to place a byte in the write FIFO here, to prepare - * to send a zero-length DATA ack packet to the host in the - * STATUS stage. - */ - au_writel(0, ep0->reg->write_fifo); - dbg("received OUT stage DATAx on EP0, size=%d", pkt->size); - dev->ep0_stage = SETUP_STAGE; - break; - case STATUS_STAGE: - // this setup had an IN data stage, and host is ACK'ing - // the packet we sent during that stage. - if (pkt->size != 0) - warn("received non-zero ACK on EP0??"); -#ifdef VDEBUG - else - vdbg("received ACK on EP0"); -#endif - dev->ep0_stage = SETUP_STAGE; - break; - } - - spin_unlock(&ep0->lock); - // we're done processing the packet, free it - kfree(pkt); -} - - -/* - * A DATA0/1 packet has been received on one of the OUT endpoints (4 or 5) - */ -static void -process_ep_receive (struct usb_dev* dev, endpoint_t *ep) -{ - usbdev_pkt_t *pkt; - - spin_lock(&ep->lock); - pkt = receive_packet_complete(ep); - spin_unlock(&ep->lock); - - dev->func_cb(CB_PKT_COMPLETE, (unsigned long)pkt, dev->cb_data); -} - - - -/* This ISR handles the receive complete and suspend events */ -static void req_sus_intr (int irq, void *dev_id) -{ - struct usb_dev *dev = (struct usb_dev *) dev_id; - u32 status; - - status = au_readl(USBD_INTSTAT); - au_writel(status, USBD_INTSTAT); // ack'em - - if (status & (1<<0)) - process_ep0_receive(dev); - if (status & (1<<4)) - process_ep_receive(dev, &dev->ep[4]); - if (status & (1<<5)) - process_ep_receive(dev, &dev->ep[5]); -} - - -/* This ISR handles the DMA done events on EP0 */ -static void dma_done_ep0_intr(int irq, void *dev_id) -{ - struct usb_dev *dev = (struct usb_dev *) dev_id; - usbdev_pkt_t* pkt; - endpoint_t *ep0 = &dev->ep[0]; - u32 cs0, buff_done; - - spin_lock(&ep0->lock); - cs0 = au_readl(ep0->reg->ctrl_stat); - - // first check packet transmit done - if ((buff_done = get_dma_buffer_done(ep0->indma)) != 0) { - // transmitted a DATAx packet during DATA stage - // on control endpoint 0 - // clear DMA done bit - if (buff_done & DMA_D0) - clear_dma_done0(ep0->indma); - if (buff_done & DMA_D1) - clear_dma_done1(ep0->indma); - - pkt = send_packet_complete(ep0); - kfree(pkt); - } - - /* - * Now check packet receive done. Shouldn't get these, - * the receive packet complete intr should happen - * before the DMA done intr occurs. - */ - if ((buff_done = get_dma_buffer_done(ep0->outdma)) != 0) { - // clear DMA done bit - if (buff_done & DMA_D0) - clear_dma_done0(ep0->outdma); - if (buff_done & DMA_D1) - clear_dma_done1(ep0->outdma); - - //process_ep0_receive(dev); - } - - s |