patch-2.2.18 linux/drivers/usb/ohci-hcd.c
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- Lines: 1490
- Date:
Thu Jan 1 01:00:00 1970
- Orig file:
v2.2.17/drivers/usb/ohci-hcd.c
- Orig date:
Fri Apr 21 12:46:37 2000
diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.17/drivers/usb/ohci-hcd.c linux/drivers/usb/ohci-hcd.c
@@ -1,1489 +0,0 @@
-/*
- * OHCI HCD (Host Controller Driver) for USB.
- *
- * (C) Copyright 1999 Roman Weissgaerber <weissg@vienna.at>
- *
- * The OHCI HCD layer is a simple but nearly complete implementation of what the
- * USB people would call a HCD for the OHCI.
- * (ISO comming soon, Bulk disabled, INT u. CTRL transfers enabled)
- * The layer on top of it, is for interfacing to the alternate-usb device-drivers.
- *
- * [ This is based on Linus' UHCI code and gregs OHCI fragments (0.03c source tree). ]
- * [ Open Host Controller Interface driver for USB. ]
- * [ (C) Copyright 1999 Linus Torvalds (uhci.c) ]
- * [ (C) Copyright 1999 Gregory P. Smith <greg@electricrain.com> ]
- * [ $Log: ohci.c,v $ ]
- * [ Revision 1.1 1999/04/05 08:32:30 greg ]
- *
- *
- * v2.1 1999/05/09 ep_addr correction, code clean up
- * v2.0 1999/05/04
- * virtual root hub is now an option,
- * memory allocation based on kmalloc and kfree now, Bus error handling,
- * INT and CTRL transfers enabled, Bulk included but disabled, ISO needs completion
- *
- * from Linus Torvalds (uhci.c) (APM not tested; hub, usb_device, bus and related stuff)
- * from Greg Smith (ohci.c) (reset controller handling, hub)
- *
- * v1.0 1999/04/27 initial release
- * ohci-hcd.c
- */
-
-/* #define OHCI_DBG */ /* printk some debug information */
-
-
-#include <linux/config.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/malloc.h>
-#include <linux/smp_lock.h>
-#include <linux/errno.h>
-#include <linux/timer.h>
-
-#include <asm/spinlock.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
-
-#include "usb.h"
-#include "ohci-hcd.h"
-#include "inits.h"
-
-
-
-#ifdef CONFIG_APM
-#include <linux/apm_bios.h>
-static int handle_apm_event(apm_event_t event);
-static int apm_resume = 0;
-#endif
-
-
-
-static struct wait_queue *control_wakeup;
-static struct wait_queue *root_hub = NULL;
-
-static __u8 cc_to_status[16] = { /* mapping of the OHCI CC to the UHCI status codes; first guess */
-/* Activ, Stalled, Data Buffer Err, Babble Detected : NAK recvd, CRC/Timeout, Bitstuff, reservd */
-/* No Error */ 0x00,
-/* CRC Error */ 0x04,
-/* Bit Stuff */ 0x02,
-/* Data Togg */ 0x40,
-/* Stall */ 0x40,
-/* DevNotResp */ 0x04,
-/* PIDCheck */ 0x04,
-/* UnExpPID */ 0x40,
-/* DataOver */ 0x20,
-/* DataUnder */ 0x20,
-/* reservd */ 0x40,
-/* reservd */ 0x40,
-/* BufferOver */ 0x20,
-/* BuffUnder */ 0x20,
-/* Not Access */ 0x80,
-/* Not Access */ 0x80
- };
-
-
-/********
- **** Interface functions
- ***********************************************/
-
-static int sohci_int_handler(void * ohci_in, unsigned int ep_addr, int ctrl_len, void * ctrl, void * data, int data_len, int status, __OHCI_BAG lw0, __OHCI_BAG lw1)
-{
-
- struct ohci * ohci = ohci_in;
- usb_device_irq handler=(void *) lw0;
- void *dev_id = (void *) lw1;
- int ret;
-
- OHCI_DEBUG({ int i; printk("USB HC IRQ <<<: %x: data(%d):", ep_addr, data_len);)
- OHCI_DEBUG( for(i=0; i < data_len; i++ ) printk(" %02x", ((__u8 *) data)[i]);)
- OHCI_DEBUG( printk(" ret_status: %x\n", status); })
-
- ret = handler(cc_to_status[status & 0xf], data, dev_id);
- if(ret == 0) return 0; /* 0 .. do not requeue */
- if(status > 0) return -1; /* error occured do not requeue ? */
- ohci_trans_req(ohci, ep_addr, 0, NULL, data, 8, (__OHCI_BAG) handler, (__OHCI_BAG) dev_id); /* requeue int request */
- return 0;
-}
-
-static int sohci_ctrl_handler(void * ohci_in, unsigned int ep_addr, int ctrl_len, void * ctrl, void * data, int data_len, int status, __OHCI_BAG lw0, __OHCI_BAG lw)
-{
- *(int * )lw0 = status;
- wake_up(&control_wakeup);
-
- OHCI_DEBUG( { int i; printk("USB HC CTRL<<<: %x: ctrl(%d):", ep_addr, ctrl_len);)
- OHCI_DEBUG( for(i=0; i < 8; i++ ) printk(" %02x", ((__u8 *) ctrl)[i]);)
- OHCI_DEBUG( printk(" data(%d):", data_len);)
- OHCI_DEBUG( for(i=0; i < data_len; i++ ) printk(" %02x", ((__u8 *) data)[i]);)
- OHCI_DEBUG( printk(" ret_status: %x\n", status); })
- return 0;
-}
-
-static int sohci_request_irq(struct usb_device *usb_dev, unsigned int pipe, usb_device_irq handler, int period, void *dev_id)
-{
- struct ohci * ohci = usb_dev->bus->hcpriv;
- union ep_addr_ ep_addr;
-
- ep_addr.iep = 0;
- ep_addr.bep.ep = ((pipe >> 15) & 0x0f) /* endpoint address */
- | (pipe & 0x80) /* direction */
- | (1 << 5); /* type = int*/
- ep_addr.bep.fa = ((pipe >> 8) & 0x7f); /* device address */
-
- OHCI_DEBUG( printk("USB HC IRQ >>>: %x: every %d ms\n", ep_addr.iep, period);)
-
- usb_ohci_add_ep(ohci, ep_addr.iep, period, 1, sohci_int_handler, 1 << ((pipe & 0x03) + 3) , (pipe >> 26) & 0x01);
-
- ohci_trans_req(ohci, ep_addr.iep, 0, NULL, ((struct ohci_device *) usb_dev->hcpriv)->data, 8, (__OHCI_BAG) handler, (__OHCI_BAG) dev_id);
- return 0;
-}
-
-
-static int sohci_control_msg(struct usb_device *usb_dev, unsigned int pipe, void *cmd, void *data, int len)
-{
- struct wait_queue wait = { current, NULL };
- struct ohci * ohci = usb_dev->bus->hcpriv;
- int status;
- union ep_addr_ ep_addr;
-
- ep_addr.iep = 0;
- ep_addr.bep.ep = ((pipe >> 15) & 0x0f) /* endpoint address */
- | (pipe & 0x80) /* direction */
- | (1 << 6); /* type = ctrl*/
- ep_addr.bep.fa = ((pipe >> 8) & 0x7f); /* device address */
-
- status = 0xf; /* CC not Accessed */
- OHCI_DEBUG( { int i; printk("USB HC CTRL>>>: %x: ctrl(%d):", ep_addr.iep, 8);)
- OHCI_DEBUG( for(i=0; i < 8; i++ ) printk(" %02x", ((__u8 *) cmd)[i]);)
- OHCI_DEBUG( printk(" data(%d):", len);)
- OHCI_DEBUG( for(i=0; i < len; i++ ) printk(" %02x", ((__u8 *) data)[i]);)
- OHCI_DEBUG( printk("\n"); })
-
- usb_ohci_add_ep(ohci, ep_addr.iep, 0, 1, sohci_ctrl_handler, 1 << ((pipe & 0x03) + 3) , (pipe >> 26) & 0x01);
-
- current->state = TASK_UNINTERRUPTIBLE;
- add_wait_queue(&control_wakeup, &wait);
-
- ohci_trans_req(ohci, ep_addr.iep, 8, cmd, data, len, (__OHCI_BAG) &status, 0);
-
- schedule_timeout(HZ/10);
-
- remove_wait_queue(&control_wakeup, &wait);
-
- OHCI_DEBUG(printk("USB HC status::: %x\n", cc_to_status[status & 0x0f]);)
-
- return cc_to_status[status & 0x0f];
-}
-
-
-static int sohci_usb_deallocate(struct usb_device *usb_dev) {
- struct ohci_device *dev = usb_to_ohci(usb_dev);
- union ep_addr_ ep_addr;
-
- ep_addr.iep = 0;
-
- OHCI_DEBUG(printk("USB HC dealloc %x\n", usb_dev->devnum);)
-
- /* wait_ms(20); */
-
- if(usb_dev->devnum >=0) {
- ep_addr.bep.fa = usb_dev->devnum;
- usb_ohci_rm_function(((struct ohci_device *)usb_dev->hcpriv)->ohci, ep_addr.iep);
- }
-
- USB_FREE(dev);
- USB_FREE(usb_dev);
-
- return 0;
-}
-
-static struct usb_device *sohci_usb_allocate(struct usb_device *parent) {
-
- struct usb_device *usb_dev;
- struct ohci_device *dev;
-
-
- USB_ALLOC(usb_dev, sizeof(*usb_dev));
- if (!usb_dev)
- return NULL;
-
- memset(usb_dev, 0, sizeof(*usb_dev));
-
- USB_ALLOC(dev, sizeof(*dev));
- if (!dev) {
- USB_FREE(usb_dev);
- return NULL;
- }
-
- /* Initialize "dev" */
- memset(dev, 0, sizeof(*dev));
-
- usb_dev->hcpriv = dev;
- dev->usb = usb_dev;
-
- usb_dev->parent = parent;
-
- if (parent) {
- usb_dev->bus = parent->bus;
- dev->ohci = usb_to_ohci(parent)->ohci;
- }
- return usb_dev;
-}
-
-struct usb_operations sohci_device_operations = {
- sohci_usb_allocate,
- sohci_usb_deallocate,
- sohci_control_msg,
- sohci_request_irq,
-};
-
-
-/******
- *** ED handling functions
- ************************************/
-
-
-
-/*
- * search for the right place to insert an interrupt ed into the int tree
- * do some load ballancing
- * */
-
-static int usb_ohci_int_ballance(struct ohci * ohci, int interval, int load) {
-
- int i,j;
-
- j = 0; /* search for the least loaded interrupt endpoint branch of all 32 branches */
- for(i=0; i< 32; i++) if(ohci->ohci_int_load[j] > ohci->ohci_int_load[i]) j=i;
-
- if(interval < 1) interval = 1;
- if(interval > 32) interval = 32;
- for(i= 0; ((interval >> i) > 1 ); interval &= (0xfffe << i++ )); /* interval = 2^int(ld(interval)) */
-
-
- for(i=j%interval; i< 32; i+=interval) ohci->ohci_int_load[i] += load;
- j = interval + (j % interval);
-
- OHCI_DEBUG(printk("USB HC new int ed on pos : %x \n",j);)
-
- return j;
-}
-
-/* get the ed from the endpoint / device adress */
-
-struct usb_ohci_ed * ohci_find_ep(struct ohci *ohci, unsigned int ep_addr_in) {
-
-union ep_addr_ ep_addr;
-struct usb_ohci_ed *tmp;
-unsigned int mask;
-
-mask = 0;
-ep_addr.iep = ep_addr_in;
-
-#ifdef VROOTHUB
- if(ep_addr.bep.fa == ohci->root_hub_funct_addr) {
- if((ep_addr.bep.ep & 0x0f) == 0)
- return &ohci->ed_rh_ep0; /* root hub ep0 */
- else
- return &ohci->ed_rh_epi; /* root hub int ep */
- }
-#endif
-
- tmp = ohci->ed_func_ep0[ep_addr.bep.fa];
- mask = ((((ep_addr.bep.ep >> 5) & 0x03)==2)?0x7f:0xff);
- ep_addr.bep.ep &= mask; /* mask out direction of ctrl ep */
-
- while (tmp != NULL) {
- if (tmp->ep_addr.iep == ep_addr.iep)
- return tmp;
- tmp = tmp->ed_list;
- }
- return NULL;
-}
-
-spinlock_t usb_ed_lock = SPIN_LOCK_UNLOCKED;
-/* add a new endpoint ep_addr */
-struct usb_ohci_ed *usb_ohci_add_ep(struct ohci * ohci, unsigned int ep_addr_in, int interval, int load, f_handler handler, int ep_size, int speed) {
-
- struct usb_ohci_ed * ed;
- struct usb_ohci_td * td;
- union ep_addr_ ep_addr;
-
-
- int int_junk;
-
- struct usb_ohci_ed *tmp;
-
- ep_addr.iep = ep_addr_in ;
- ep_addr.bep.ep &= ((((ep_addr.bep.ep >> 5) & 0x03)==2)?0x7f:0xff); /* mask out direction of ctrl ep */
-
- spin_lock(&usb_ed_lock);
-
- tmp = ohci_find_ep(ohci, ep_addr.iep);
- if (tmp != NULL) {
-
-#ifdef VROOTHUB
- if(ep_addr.bep.fa == ohci->root_hub_funct_addr) {
- if((ep_addr.bep.ep & 0x0f) != 0) { /* root hub int ep */
- ohci->ed_rh_epi.handler = handler;
- ohci_init_rh_int_timer(ohci, interval);
- }
- else { /* root hub ep0 */
- ohci->ed_rh_ep0.handler = handler;
- }
- }
-
- else
-#endif
-
- {
- tmp->hw.info = ep_addr.bep.fa | ((ep_addr.bep.ep & 0xf) <<7)
-
- | (((ep_addr.bep.ep & 0x60) == 0)? 0x8000 : 0)
- | (speed << 13)
- | ep_size <<16;
-
- tmp->handler = handler;
- }
- spin_unlock(&usb_ed_lock);
- return tmp; /* ed already in use */
- }
-
-
- OHCI_ALLOC(td, sizeof(td)); /* dummy td; end of td list for ed */
- OHCI_ALLOC(ed, sizeof(ed));
- td->prev_td = NULL;
-
- ed->hw.tail_td = virt_to_bus(&td->hw);
- ed->hw.head_td = ed->hw.tail_td;
- ed->hw.info = ep_addr.bep.fa | ((ep_addr.bep.ep & 0xf) <<7)
- /* | ((ep_addr.bep.port & 0x80)? 0x1000 : 0x0800 ) */
- | (((ep_addr.bep.ep & 0x60) == 0)? 0x8000 : 0)
- | (speed << 13)
- | ep_size <<16;
-
- ed->handler = handler;
-
- switch((ep_addr.bep.ep >> 5) & 0x03) {
- case CTRL:
- ed->hw.next_ed = 0;
- if(ohci->ed_controltail == NULL) {
- writel(virt_to_bus(&ed->hw), &ohci->regs->ed_controlhead);
- }
- else {
- ohci->ed_controltail->hw.next_ed = virt_to_bus(&ed->hw);
- }
- ed->ed_prev = ohci->ed_controltail;
- ohci->ed_controltail = ed;
- break;
- case BULK:
- ed->hw.next_ed = 0;
- if(ohci->ed_bulktail == NULL) {
- writel(virt_to_bus(&ed->hw), &ohci->regs->ed_bulkhead);
- }
- else {
- ohci->ed_bulktail->hw.next_ed = virt_to_bus(&ed->hw);
- }
- ed->ed_prev = ohci->ed_bulktail;
- ohci->ed_bulktail = ed;
- break;
- case INT:
- int_junk = usb_ohci_int_ballance(ohci, interval, load);
- ed->hw.next_ed = ohci->hc_area->ed[int_junk].next_ed;
- ohci->hc_area->ed[int_junk].next_ed = virt_to_bus(&ed->hw);
- ed->ed_prev = (struct usb_ohci_ed *) &ohci->hc_area->ed[int_junk];
- break;
- case ISO:
- ed->hw.next_ed = 0;
- ohci->ed_isotail->hw.next_ed = virt_to_bus(&ed->hw);
- ed->ed_prev = ohci->ed_isotail;
- ohci->ed_isotail = ed;
- break;
- }
- ed->ep_addr = ep_addr;
-
- /* Add it to the "hash"-table of known endpoint descriptors */
-
- ed->ed_list = ohci->ed_func_ep0[ed->ep_addr.bep.fa];
- ohci->ed_func_ep0[ed->ep_addr.bep.fa] = ed;
-
- spin_unlock(&usb_ed_lock);
-
- OHCI_DEBUG(printk("USB HC new ed %x: %x :", ep_addr.iep, (unsigned int ) ed); )
- OHCI_DEBUG({ int i; for( i= 0; i<8 ;i++) printk(" %4x", ((unsigned int *) ed)[i]) ; printk("\n"); }; )
- return 0;
-}
-
-/*****
- * Request the removal of an endpoint
- *
- * put the ep on the rm_list and request a stop of the bulk or ctrl list
- * real removal is done at the next start of frame hardware interrupt
- */
-int usb_ohci_rm_ep(struct ohci * ohci, struct usb_ohci_ed *ed)
-{
- unsigned int flags;
- struct usb_ohci_ed *tmp;
-
- OHCI_DEBUG(printk("USB HC remove ed %x: %x :\n", ed->ep_addr.iep, (unsigned int ) ed); )
-
- spin_lock_irqsave(&usb_ed_lock, flags);
-
- tmp = ohci->ed_func_ep0[ed->ep_addr.bep.fa];
- if (tmp == NULL) {
- spin_unlock_irqrestore(&usb_ed_lock, flags);
- return 0;
- }
-
- if(tmp == ed) {
- ohci->ed_func_ep0[ed->ep_addr.bep.fa] = ed->ed_list;
- }
- else {
- while (tmp->ed_list != ed) {
- if (tmp->ed_list == NULL) {
- spin_unlock_irqrestore(&usb_ed_lock, flags);
- return 0;
- }
- tmp = tmp->ed_list;
- }
- tmp->ed_list = ed->ed_list;
- }
- ed->ed_list = ohci->ed_rm_list;
- ohci->ed_rm_list = ed;
- ed->hw.info |= OHCI_ED_SKIP;
-
- switch((ed->ep_addr.bep.ep >> 5) & 0x03) {
- case CTRL:
- writel_mask(~(0x01<<4), &ohci->regs->control); /* stop CTRL list */
- break;
- case BULK:
- writel_mask(~(0x01<<5), &ohci->regs->control); /* stop BULK list */
- break;
- }
-
-
- writel( OHCI_INTR_SF, &ohci->regs->intrenable); /* enable sof interrupt */
-
- spin_unlock_irqrestore(&usb_ed_lock, flags);
-
- return 1;
-}
-
-/* we have requested to stop the bulk or CTRL list,
- * now we can remove the eds on the rm_list */
-
-static int ohci_rm_eds(struct ohci * ohci) {
-
- unsigned int flags;
- struct usb_ohci_ed *ed;
- struct usb_ohci_ed *ed_tmp;
- struct usb_ohci_td *td;
- __u32 td_hw_tmp;
- __u32 td_hw;
-
- spin_lock_irqsave(&usb_ed_lock, flags);
-
- ed = ohci->ed_rm_list;
-
- while (ed != NULL) {
-
- switch((ed->ep_addr.bep.ep >> 5) & 0x03) {
- case CTRL:
- if(ed->ed_prev == NULL) {
- writel(ed->hw.next_ed, &ohci->regs->ed_controlhead);
- }
- else {
- ed->ed_prev->hw.next_ed = ed->hw.next_ed;
- }
- if(ohci->ed_controltail == ed) {
- ohci->ed_controltail = ed->ed_prev;
- }
- break;
- case BULK:
- if(ed->ed_prev == NULL) {
- writel(ed->hw.next_ed, &ohci->regs->ed_bulkhead);
- }
- else {
- ed->ed_prev->hw.next_ed = ed->hw.next_ed;
- }
- if(ohci->ed_bulktail == ed) {
- ohci->ed_bulktail = ed->ed_prev;
- }
- break;
- case INT:
- ed->ed_prev->hw.next_ed = ed->hw.next_ed;
- break;
- case ISO:
- ed->ed_prev->hw.next_ed = ed->hw.next_ed;
- if(ohci->ed_isotail == ed) {
- ohci->ed_isotail = ed->ed_prev;
- }
- break;
- }
-
- if(ed->hw.next_ed != 0) ((struct usb_ohci_ed *) bus_to_virt(ed->hw.next_ed))->ed_prev = ed->ed_prev;
-
-
-/* tds directly connected to ed */
-
- td_hw = ed->hw.head_td & 0xfffffff0;
- while(td_hw != 0) {
- td = bus_to_virt(td_hw);
- td_hw_tmp = td_hw;
- td_hw = td->hw.next_td;
- OHCI_FREE(td); /* free pending tds */
- if(td_hw_tmp == ed->hw.tail_td) break;
-
- }
-
- /* mark TDs on the hc done list (if there are any) */
- td_hw = readl(&ohci->regs->donehead) & 0xfffffff0;
- while(td_hw != 0) {
- td = bus_to_virt(td_hw);
- td_hw = td->hw.next_td;
- if(td->ep == ed) td->ep = 0;
- }
-
- /* mark TDs on the hcca done list (if there are any) */
- td_hw = ohci->hc_area->hcca.done_head & 0xfffffff0 ;
-
- while(td_hw != 0) {
- td = bus_to_virt(td_hw);
- td_hw = td->hw.next_td;
- if(td->ep == ed) td->ep = 0;
- }
-
- ed_tmp = ed;
- ed = ed->ed_list;
- OHCI_FREE(ed_tmp); /* free ed */
- }
- writel(0, &ohci->regs->ed_controlcurrent); /* reset CTRL list */
- writel(0, &ohci->regs->ed_bulkcurrent); /* reset BULK list */
- writel_set((0x01<<4), &ohci->regs->control); /* start CTRL u. (BULK list) */
-
- spin_unlock_irqrestore(&usb_ed_lock, flags);
-
- ohci->ed_rm_list = NULL;
- OHCI_DEBUG(printk("USB HC after rm ed control: %4x intrstat: %4x intrenable: %4x\n", readl(&ohci->regs->control),readl(&ohci->regs->intrstatus),readl(&ohci->regs->intrenable));)
-
-
- return 0;
-}
-
-/* remove all endpoints of a function (device) */
-int usb_ohci_rm_function( struct ohci * ohci, unsigned int ep_addr_in)
-{
- struct usb_ohci_ed *ed;
- struct usb_ohci_ed *tmp;
- union ep_addr_ ep_addr;
-
-
-
- ep_addr.iep = ep_addr_in;
-
- for(ed = ohci->ed_func_ep0[ep_addr.bep.fa]; ed != NULL;) {
- tmp = ed;
- ed = ed->ed_list;
- usb_ohci_rm_ep(ohci, tmp);
- }
-
-
-
- return 1;
-}
-
-
-
-
-
-/******
- *** TD handling functions
- ************************************/
-
-
-#define FILL_TD(TD_PT, HANDLER, INFO, DATA, LEN, LW0, LW1) \
- td_pt = (TD_PT); \
- td_pt1 = (struct usb_ohci_td *) bus_to_virt(usb_ep->hw.tail_td); \
- td_pt1->ep = usb_ep; \
- td_pt1->handler = (HANDLER); \
- td_pt1->buffer_start = (DATA); \
- td_pt1->lw0 = (LW0); \
- td_pt1->lw1 = (LW1); \
- td_pt1->hw.info = (INFO); \
- td_pt1->hw.cur_buf = virt_to_bus(DATA); \
- td_pt1->hw.buf_end = td_pt1->hw.cur_buf + (LEN) - 1; \
- td_pt1->hw.next_td = virt_to_bus(td_pt); \
- usb_ep->hw.tail_td = virt_to_bus(td_pt); \
- td_pt->prev_td = td_pt1; \
- td_pt->hw.next_td = 0
-
-spinlock_t usb_req_lock = SPIN_LOCK_UNLOCKED;
-
-int ohci_trans_req(struct ohci * ohci, unsigned int ep_addr, int ctrl_len, void *ctrl, void * data, int data_len, __OHCI_BAG lw0, __OHCI_BAG lw1) {
-
- int ed_type;
- unsigned int flags;
- struct usb_ohci_td *td_pt;
- struct usb_ohci_td *td_pt1;
- struct usb_ohci_td *td_pt_a1, *td_pt_a2, *td_pt_a3;
- struct usb_ohci_ed *usb_ep;
- f_handler handler;
-
-
- td_pt_a1 =NULL;
- td_pt_a2 =NULL;
- td_pt_a3 =NULL;
-
- usb_ep = ohci_find_ep(ohci, ep_addr);
- if(usb_ep == NULL ) return -1; /* not known ep */
-
- handler = usb_ep->handler;
-
-#ifdef VROOTHUB
- if(usb_ep == &ohci->ed_rh_ep0) { /* root hub ep 0 control endpoint */
- root_hub_control_msg(ohci, 8, ctrl, data, data_len, lw0, lw1, handler);
- return 0;
- }
-
- if(usb_ep == &ohci->ed_rh_epi) { /* root hub interrupt endpoint */
-
- root_hub_int_req(ohci, 8, ctrl, data, data_len, lw0, lw1, handler);
- return 0;
- }
-#endif
- /* struct usb_ohci_ed * usb_ep = usb_ohci_add_ep(pipe, ohci, interval, 1); */
-
- ed_type = ((((union ep_addr_)ep_addr).bep.ep >> 5) & 0x07);
-
- switch(ed_type) {
- case BULK_IN:
- case BULK_OUT:
- case INT_IN:
- case INT_OUT:
- OHCI_ALLOC(td_pt_a1, sizeof(td_pt_a1));
- break;
-
- case CTRL_IN:
- case CTRL_OUT:
- OHCI_ALLOC(td_pt_a1, sizeof(td_pt_a1));
- OHCI_ALLOC(td_pt_a3, sizeof(td_pt_a3));
- if(data_len > 0) {
- OHCI_ALLOC(td_pt_a2, sizeof(td_pt_a2));
- }
- break;
-
- case ISO_IN:
- case ISO_OUT:
-
- }
-
- spin_lock_irqsave(&usb_req_lock, flags);
-
- switch(ed_type) {
- case BULK_IN:
- FILL_TD( td_pt_a1, handler, TD_CC | TD_R | TD_DP_IN | TD_T_TOGGLE, data, data_len, lw0, lw1 );
- writel( OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
- break;
-
- case BULK_OUT:
- FILL_TD( td_pt_a1, handler, TD_CC | TD_DP_OUT | TD_T_TOGGLE, data, data_len, lw0, lw1 );
- writel( OHCI_BLF, &ohci->regs->cmdstatus); /* start bulk list */
- break;
-
- case INT_IN:
- FILL_TD( td_pt_a1, handler, TD_CC | TD_R | TD_DP_IN | TD_T_TOGGLE, data, data_len, lw0, lw1 );
- break;
-
- case INT_OUT:
- FILL_TD( td_pt_a1, handler, TD_CC | TD_DP_OUT | TD_T_TOGGLE, data, data_len, lw0, lw1 );
- break;
-
- case CTRL_IN:
- FILL_TD( td_pt_a1, NULL, TD_CC | TD_DP_SETUP | TD_T_DATA0, ctrl, ctrl_len, 0, 0 );
- if(data_len > 0) {
- FILL_TD( td_pt_a2, NULL, TD_CC | TD_R | TD_DP_IN | TD_T_DATA1, data, data_len, 0, 0 );
- }
- FILL_TD( td_pt_a3, handler, TD_CC | TD_DP_OUT | TD_T_DATA1, NULL, 0, lw0, lw1 );
- writel( OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
- break;
-
- case CTRL_OUT:
- FILL_TD( td_pt_a1, NULL, TD_CC | TD_DP_SETUP | TD_T_DATA0, ctrl, ctrl_len, 0, 0 );
- if(data_len > 0) {
- FILL_TD( td_pt_a2, NULL, TD_CC | TD_R | TD_DP_OUT | TD_T_DATA1, data, data_len, 0, 0 );
- }
- FILL_TD( td_pt_a3, handler, TD_CC | TD_DP_IN | TD_T_DATA1, NULL, 0, lw0, lw1 );
- writel( OHCI_CLF, &ohci->regs->cmdstatus); /* start Control list */
- break;
-
- case ISO_IN:
- case ISO_OUT:
- break;
- }
-
-
-
-
- td_pt1 = (struct usb_ohci_td *) bus_to_virt(usb_ep->hw.tail_td);
-
-
- if(td_pt_a3 != NULL) td_pt_a3->prev_td = NULL;
- else if (td_pt_a2 != NULL) td_pt_a2->prev_td = NULL;
- else if (td_pt_a1 != NULL) td_pt_a1->prev_td = NULL;
-
- spin_unlock_irqrestore(&usb_req_lock, flags);
- return 0;
-}
-
-
-/******
- *** Done List handling functions
- ************************************/
-
-/* replies to the request have to be on a FIFO basis so
- * we reverse the reversed done-list */
-
-static struct usb_ohci_td * ohci_reverse_done_list(struct ohci * ohci) {
-
- __u32 td_list_hc;
- struct usb_ohci_td * td_list = NULL;
- struct usb_ohci_td * td_rev = NULL;
-
- td_list_hc = ohci->hc_area->hcca.done_head & 0xfffffff0;
- ohci->hc_area->hcca.done_head = 0;
-
- while(td_list_hc) {
-
- td_list = (struct usb_ohci_td *) bus_to_virt(td_list_hc);
- td_list->next_dl_td = td_rev;
-
- td_rev = td_list;
- td_list_hc = td_list->hw.next_td & 0xfffffff0;
- }
- return td_list;
-}
-
-/* all done requests are replied here */
-static int usb_ohci_done_list(struct ohci * ohci) {
-
- struct usb_ohci_td * td = NULL;
- struct usb_ohci_td * td_list;
- struct usb_ohci_td * td_list_next = NULL;
- struct usb_ohci_td * td_err = NULL;
- __u32 td_hw;
-
-
- td_list = ohci_reverse_done_list(ohci);
-
- while(td_list) {
- td_list_next = td_list->next_dl_td;
- td = td_list;
-
- if(td->ep == NULL) { /* removed ep */
- OHCI_FREE(td_list);
- break;
- }
-
- /* the HC halts an ED if an error occurs; put all pendings TDs of an halted ED on the
- * done list; they are marked with an 0xf CC_error code
- */
-
- if(TD_CC_GET(td_list->hw.info) != TD_CC_NOERROR) { /* on error move all pending tds of an ed into the done list */
- printk("******* USB BUS error %x @ep %x\n", TD_CC_GET(td_list->hw.info), td_list->ep->ep_addr.iep);
- td_err= td_list;
- td_hw = td_list->ep->hw.head_td & 0xfffffff0;
- while(td_hw != 0) {
- if(td_hw == td_list->ep->hw.tail_td) break;
- td = bus_to_virt(td_hw);
- td_err->next_dl_td = td;
- td_err= td;
- td_hw = td->hw.next_td;
- }
- td_list->ep->hw.head_td = td_list->ep->hw.tail_td;
- td->next_dl_td = td_list_next;
- td_list_next = td_list->next_dl_td;
-
- }
- /* send the reply */
- if(td_list->handler != NULL) {
- if(td_list->prev_td == NULL) {
- td_list->handler((void *) ohci,
- td_list->ep->ep_addr.iep,
- 0,
- NULL,
- td_list->buffer_start,
- td_list->hw.buf_end-virt_to_bus(td_list->buffer_start)+1,
- TD_CC_GET(td_list->hw.info),
- td_list->lw0,
- td_list->lw1);
- OHCI_FREE(td_list);
- }
- else {
- if(td_list->prev_td->prev_td == NULL) { /* cntrl 2 Transactions dataless */
- td_list->handler((void *) ohci,
- td_list->ep->ep_addr.iep,
- td_list->prev_td->hw.buf_end-virt_to_bus(td_list->prev_td->buffer_start)+1,
- td_list->prev_td->buffer_start,
- NULL,
- 0,
- (TD_CC_GET(td_list->prev_td->hw.info) > 0) ? TD_CC_GET(td_list->prev_td->hw.info) : TD_CC_GET(td_list->hw.info),
- td_list->lw0,
- td_list->lw1);
- OHCI_FREE(td_list->prev_td);
- OHCI_FREE(td_list);
- }
- else { /* cntrl 3 Transactions */
- td_list->handler((void *) ohci,
- td_list->ep->ep_addr.iep,
- td_list->prev_td->prev_td->hw.buf_end-virt_to_bus(td_list->prev_td->prev_td->buffer_start)+1,
- td_list->prev_td->prev_td->buffer_start,
- td_list->prev_td->buffer_start,
- td_list->prev_td->hw.buf_end-virt_to_bus(td_list->prev_td->buffer_start)+1,
- (TD_CC_GET(td_list->prev_td->prev_td->hw.info) > 0) ? TD_CC_GET(td_list->prev_td->prev_td->hw.info)
- : (TD_CC_GET(td_list->prev_td->hw.info) > 0) ? TD_CC_GET(td_list->prev_td->hw.info) : TD_CC_GET(td_list->hw.info),
- td_list->lw0,
- td_list->lw1);
- OHCI_FREE(td_list->prev_td->prev_td);
- OHCI_FREE(td_list->prev_td);
- OHCI_FREE(td_list);
-
- }
- }
-
- }
- td_list = td_list_next;
- }
- return 0;
-}
-
-
-
-/******
- *** HC functions
- ************************************/
-
-
-
-void reset_hc(struct ohci *ohci) {
- int retries = 5;
- int timeout = 30;
- int fminterval;
-
- if(readl(&ohci->regs->control) & 0x100) { /* SMM owns the HC */
- writel(0x08, &ohci->regs->cmdstatus); /* request ownership */
- printk("USB HC TakeOver from SMM\n");
- do {
- wait_ms(100);
- if(--retries) {
- printk("USB HC TakeOver timed out!\n");
- break;
- }
- }
- while(readl(&ohci->regs->control) & 0x100);
- }
-
- writel((1<<31), &ohci->regs->intrdisable); /* Disable HC interrupts */
- OHCI_DEBUG(printk("USB HC reset_hc: %x ; retries: %d\n", readl(&ohci->regs->control), 5-retries);)
- fminterval = readl(&ohci->regs->fminterval) & 0x3fff;
- writel(1, &ohci->regs->cmdstatus); /* HC Reset */
- while ((readl(&ohci->regs->cmdstatus) & 0x01) != 0) { /* 10us Reset */
- if (--timeout == 0) {
- printk("USB HC reset timed out!\n");
- return;
- }
- udelay(1);
- }
- /* set the timing */
- fminterval |= (((fminterval -210) * 6)/7)<<16;
- writel(fminterval, &ohci->regs->fminterval);
- writel(((fminterval&0x3fff)*9)/10, &ohci->regs->periodicstart);
-}
-
-
-/*
- * Reset and start an OHCI controller
- */
-void start_hc(struct ohci *ohci)
-{
- /* int fminterval; */
- unsigned int mask;
- /* fminterval = readl(&ohci->regs->fminterval) & 0x3fff;
- reset_hc(ohci); */
-
-
- writel(virt_to_bus(&ohci->hc_area->hcca), &ohci->regs->hcca); /* a reset clears this */
-
- /* Choose the interrupts we care about now, others later on demand */
- mask = OHCI_INTR_MIE | OHCI_INTR_WDH;
- /* | OHCI_INTR_SO | OHCI_INTR_UE |OHCI_INTR_RHSC |OHCI_INTR_SF|
- OHCI_INTR_FNO */
-
-
-
- writel((0x00), &ohci->regs->control); /* USB Reset BUS */
- wait_ms(10);
-
- writel((0x97), &ohci->regs->control); /* USB Operational */
-
- writel( 0x10000, &ohci->regs->roothub.status); /* root hub power on */
- wait_ms(50);
-
- OHCI_DEBUG(printk("USB HC rstart_hc_operational: %x\n", readl(&ohci->regs->control)); )
- OHCI_DEBUG(printk("USB HC roothubstata: %x \n", readl( &(ohci->regs->roothub.a) )); )
- OHCI_DEBUG(printk("USB HC roothubstatb: %x \n", readl( &(ohci->regs->roothub.b) )); )
- OHCI_DEBUG(printk("USB HC roothubstatu: %x \n", readl( &(ohci->regs->roothub.status) )); )
- OHCI_DEBUG(printk("USB HC roothubstat1: %x \n", readl( &(ohci->regs->roothub.portstatus[0]) )); )
- OHCI_DEBUG(printk("USB HC roothubstat2: %x \n", readl( &(ohci->regs->roothub.portstatus[1]) )); )
-
- /* control_wakeup = NULL; */
- writel(mask, &ohci->regs->intrenable);
- writel(mask, &ohci->regs->intrstatus);
-
-#ifdef VROOTHUB
- {
-
- struct usb_device * usb_dev;
- struct ohci_device *dev;
-
- usb_dev = sohci_usb_allocate(ohci->root_hub->usb);
- dev = usb_dev->hcpriv;
-
- dev->ohci = ohci;
-
- usb_connect(usb_dev);
-
- ohci->root_hub->usb->children[0] = usb_dev;
-
- usb_new_device(usb_dev);
- }
-#endif
-
-
-
-}
-
-
-
-
-static void ohci_interrupt(int irq, void *__ohci, struct pt_regs *r)
-{
- struct ohci *ohci = __ohci;
- struct ohci_regs *regs = ohci->regs;
-
- int ints;
-
-
- if((ohci->hc_area->hcca.done_head != 0) && !(ohci->hc_area->hcca.done_head & 0x01)) {
- ints = OHCI_INTR_WDH;
- }
- else {
- if((ints = (readl(®s->intrstatus) & readl(®s->intrenable))) == 0)
- return;
- }
-
- ohci->intrstatus |= ints;
- OHCI_DEBUG(printk("USB HC interrupt: %x (%x) \n", ints, readl(&ohci->regs->intrstatus));)
-
- /* ints &= ~(OHCI_INTR_WDH); WH Bit will be set by done list subroutine */
- /* if(ints & OHCI_INTR_FNO) {
- writel(OHCI_INTR_FNO, ®s->intrstatus);
- if (waitqueue_active(&ohci_tasks)) wake_up(&ohci_tasks);
- } */
-
- if(ints & OHCI_INTR_WDH) {
- writel(OHCI_INTR_WDH, ®s->intrdisable);
- ohci->intrstatus &= (~OHCI_INTR_WDH);
- usb_ohci_done_list(ohci); /* prepare out channel list */
- writel(OHCI_INTR_WDH, &ohci->regs->intrstatus);
- writel(OHCI_INTR_WDH, &ohci->regs->intrenable);
-
- }
-
- if(ints & OHCI_INTR_SF) {
- writel(OHCI_INTR_SF, ®s->intrdisable);
- writel(OHCI_INTR_SF, &ohci->regs->intrstatus);
- ohci->intrstatus &= (~OHCI_INTR_SF);
- if(ohci->ed_rm_list != NULL) {
- ohci_rm_eds(ohci);
- }
- }
-#ifndef VROOTHUB
- if(ints & OHCI_INTR_RHSC) {
- writel(OHCI_INTR_RHSC, ®s->intrdisable);
- writel(OHCI_INTR_RHSC, &ohci->regs->intrstatus);
- wake_up(&root_hub);
-
- }
- #endif
-
- writel(OHCI_INTR_MIE, ®s->intrenable);
-
-}
-
-#ifndef VROOTHUB
-/*
- * This gets called if the connect status on the root
- * hub (and the root hub only) changes.
- */
-static void ohci_connect_change(struct ohci *ohci, unsigned int port_nr)
-{
- struct usb_device *usb_dev;
- struct ohci_device *dev;
- OHCI_DEBUG(printk("uhci_connect_change: called for %d stat %x\n", port_nr,readl(&ohci->regs->roothub.portstatus[port_nr]) );)
-
- /*
- * Even if the status says we're connected,
- * the fact that the status bits changed may
- * that we got disconnected and then reconnected.
- *
- * So start off by getting rid of any old devices..
- */
- usb_disconnect(&ohci->root_hub->usb->children[port_nr]);
-
- if(!(readl(&ohci->regs->roothub.portstatus[port_nr]) & RH_PS_CCS)) {
- writel(RH_PS_CCS, &ohci->regs->roothub.portstatus[port_nr]);
- return; /* nothing connected */
- }
- /*
- * Ok, we got a new connection. Allocate a device to it,
- * and find out what it wants to do..
- */
- usb_dev = sohci_usb_allocate(ohci->root_hub->usb);
- dev = usb_dev->hcpriv;
- dev->ohci = ohci;
- usb_connect(dev->usb);
- ohci->root_hub->usb->children[port_nr] = usb_dev;
- wait_ms(200); /* wait for powerup */
- /* reset port/device */
- writel(RH_PS_PRS, &ohci->regs->roothub.portstatus[port_nr]); /* reset port */
- while(!(readl( &ohci->regs->roothub.portstatus[port_nr]) & RH_PS_PRSC)) wait_ms(10); /* reset active ? */
- writel(RH_PS_PES, &ohci->regs->roothub.portstatus[port_nr]); /* enable port */
- wait_ms(10);
- /* Get speed information */
- usb_dev->slow = (readl( &ohci->regs->roothub.portstatus[port_nr]) & RH_PS_LSDA) ? 1 : 0;
-
- /*
- * Ok, all the stuff specific to the root hub has been done.
- * The rest is generic for any new USB attach, regardless of
- * hub type.
- */
- usb_new_device(usb_dev);
-}
-#endif
-
-
-
-/*
- * Allocate the resources required for running an OHCI controller.
- * Host controller interrupts must not be running while calling this
- * function.
- *
- * The mem_base parameter must be the usable -virtual- address of the
- * host controller's memory mapped I/O registers.
- *
- * This is where OHCI triumphs over UHCI, because good is dumb.
- * Note how much simpler this function is than in uhci.c.
- *
- * OHCI hardware takes care of most of the scheduling of different
- * transfer types with the correct prioritization for us.
- */
-
-
-static struct ohci *alloc_ohci(void* mem_base)
-{
- int i,j;
- struct ohci *ohci;
- struct ohci_hc_area *hc_area;
- struct usb_bus *bus;
- struct ohci_device *dev;
- struct usb_device *usb;
-
- /*
- * Here we allocate some dummy EDs as well as the
- * OHCI host controller communications area. The HCCA is just
- * a nice pool of memory with pointers to endpoint descriptors
- * for the different interrupts.
- *
- * The first page of memory contains the HCCA and ohci structure
- */
- hc_area = (struct ohci_hc_area *) __get_free_pages(GFP_KERNEL, 1);
- if (!hc_area)
- return NULL;
- memset(hc_area, 0, sizeof(*hc_area));
- ohci = &hc_area->ohci;
- ohci->irq = -1;
- ohci->regs = mem_base;
-
- ohci->hc_area = hc_area;
- /* Tell the controller where the HCCA is */
- writel(virt_to_bus(&hc_area->hcca), &ohci->regs->hcca);
-
-
- /*
- * Initialize the ED polling "tree", full tree;
- * dummy eds ed[i] (hc should skip them)
- * i == 0 is the end of the iso list;
- * 1 is the 1ms node,
- * 2,3 2ms nodes,
- * 4,5,6,7 4ms nodes,
- * 8 ... 15 8ms nodes,
- * 16 ... 31 16ms nodes,
- * 32 ... 63 32ms nodes
- * Sequenzes:
- * 32-16- 8-4-2-1-0
- * 33-17- 9-5-3-1-0
- * 34-18-10-6-2-1-0
- * 35-19-11-7-3-1-0
- * 36-20-12-4-2-1-0
- * 37-21-13-5-3-1-0
- * 38-22-14-6-2-1-0
- * 39-23-15-7-3-1-0
- * 40-24- 8-4-2-1-0
- * 41-25- 9-5-3-1-0
- * 42-26-10-6-2-1-0
- * : :
- * 63-31-15-7-3-1-0
- */
- hc_area->ed[ED_ISO].info |= OHCI_ED_SKIP; /* place holder, so skip it */
- hc_area->ed[ED_ISO].next_ed = 0x0000; /* end of iso list */
-
- hc_area->ed[1].next_ed = virt_to_bus(&(hc_area->ed[ED_ISO]));
- hc_area->ed[1].info |= OHCI_ED_SKIP; /* place holder, skip it */
-
- j=1;
- for (i = 2; i < (NUM_INTS * 2); i++) {
- if (i >= NUM_INTS)
- hc_area->hcca.int_table[i - NUM_INTS] = virt_to_bus(&(hc_area->ed[i]));
-
- if( i == j*4) j *= 2;
- hc_area->ed[i].next_ed = virt_to_bus(&(hc_area->ed[j+ i%j]));
- hc_area->ed[i].info |= OHCI_ED_SKIP; /* place holder, skip it */
- }
-
-
- /*
- * for load ballancing of the interrupt branches
- */
- for (i = 0; i < NUM_INTS; i++) ohci->ohci_int_load[i] = 0;
-
- /*
- * Store the end of control and bulk list eds. So, we know where we can add
- * elements to these lists.
- */
- ohci->ed_isotail = (struct usb_ohci_ed *) &(hc_area->ed[ED_ISO]);
- ohci->ed_controltail = NULL;
- ohci->ed_bulktail = NULL;
-
- /*
- * Tell the controller where the control and bulk lists are
- * The lists are empty now.
- */
- writel(0, &ohci->regs->ed_controlhead);
- writel(0, &ohci->regs->ed_bulkhead);
-
-
- USB_ALLOC(bus, sizeof(*bus));
- if (!bus)
- return NULL;
-
- memset(bus, 0, sizeof(*bus));
-
- ohci->bus = bus;
- bus->hcpriv = (void *) ohci;
- bus->op = &sohci_device_operations;
-
-
- usb = sohci_usb_allocate(NULL);
- if (!usb)
- return NULL;
-
- dev = ohci->root_hub = usb_to_ohci(usb);
-
- usb->bus = bus;
- /* bus->root_hub = ohci_to_usb(ohci->root_hub); */
- dev->ohci = ohci;
-
- /* Initialize the root hub */
-
- usb->maxchild = readl(&ohci->regs->roothub.a) & 0xff;
- usb_init_root_hub(usb);
-
- return ohci;
-}
-
-
-/*
- * De-allocate all resources..
- */
-
-static void release_ohci(struct ohci *ohci)
-{
- int i;
- union ep_addr_ ep_addr;
- ep_addr.iep = 0;
-
- OHCI_DEBUG(printk("USB HC release ohci \n");)
-
- if (ohci->irq >= 0) {
- free_irq(ohci->irq, ohci);
- ohci->irq = -1;
- }
-
- /* stop hc */
- writel(OHCI_USB_SUSPEND, &ohci->regs->control);
-
- /* deallocate all EDs and TDs */
- for(i=0; i < 128; i ++) {
- ep_addr.bep.fa = i;
- usb_ohci_rm_function(ohci, ep_addr.iep);
- }
- ohci_rm_eds(ohci); /* remove eds */
-
- /* disconnect all devices */
- if(ohci->root_hub)
- for(i = 0; i < ohci->root_hub->usb->maxchild; i++)
- usb_disconnect(ohci->root_hub->usb->children + i);
-
- USB_FREE(ohci->root_hub->usb);
- USB_FREE(ohci->root_hub);
- USB_FREE(ohci->bus);
-
- /* unmap the IO address space */
- iounmap(ohci->regs);
-
-
- free_pages((unsigned int) ohci->hc_area, 1);
-
-}
-
-
-void cleanup_drivers(void);
-
-static int ohci_roothub_thread(void * __ohci)
-{
- struct ohci *ohci = (struct ohci *)__ohci;
- lock_kernel();
-
- /*
- * This thread doesn't need any user-level access,
- * so get rid of all our resources..
- */
- printk("ohci_roothub_thread at %p\n", &ohci_roothub_thread);
- exit_mm(current);
- exit_files(current);
- exit_fs(current);
-
-
- strcpy(current->comm, "root-hub");
-
-
- start_hc(ohci);
- writel( 0x10000, &ohci->regs->roothub.status);
- wait_ms(50); /* root hub power on */
- do {
-#ifdef CONFIG_APM
- if (apm_resume) {
- apm_resume = 0;
- start_hc(ohci);
- continue;
- }
-#endif
-
- OHCI_DEBUG(printk("USB RH tasks: int: %x\n", ohci->intrstatus); )
-#ifndef VROOTHUB
- /* if (ohci->intrstatus & OHCI_INTR_RHSC) */
- {
- int port_nr;
- for(port_nr=0; port_nr< ohci->root_hub->usb->maxchild; port_nr++)
- if(readl(&ohci->regs->roothub.portstatus[port_nr]) & (RH_PS_CSC | RH_PS_PRSC)) {
- ohci_connect_change(ohci, port_nr);
- writel(0xffff0000, &ohci->regs->roothub.portstatus[port_nr]);
- }
- ohci->intrstatus &= ~(OHCI_INTR_RHSC);
- writel(OHCI_INTR_RHSC, &ohci->regs->intrenable);
- }
-#endif
-
- interruptible_sleep_on(&root_hub);
-
- } while (!signal_pending(current));
-
-#ifdef VROOTHUB
- ohci_del_rh_int_timer(ohci);
-#endif
-
-
- cleanup_drivers();
- /* reset_hc(ohci); */
-
- release_ohci(ohci);
- MOD_DEC_USE_COUNT;
-
- printk("ohci_control_thread exiting\n");
-
- return 0;
-}
-
-
-
-
-/*
- * Increment the module usage count, start the control thread and
- * return success.
- */
-static int found_ohci(int irq, void* mem_base)
-{
- int retval;
- struct ohci *ohci;
- OHCI_DEBUG(printk("USB HC found ohci: irq= %d membase= %x \n", irq, (int)mem_base);)
- /* Allocate the running OHCI structures */
- ohci = alloc_ohci(mem_base);
- if (!ohci) {
- return -ENOMEM;
- }
-
- reset_hc(ohci);
-
- retval = -EBUSY;
- if (request_irq(irq, ohci_interrupt, SA_SHIRQ, "ohci-usb", ohci) == 0) {
- int pid;
-
- MOD_INC_USE_COUNT;
- ohci->irq = irq;
-
- pid = kernel_thread(ohci_roothub_thread, ohci, CLONE_FS | CLONE_FILES | CLONE_SIGHAND);
- if (pid >= 0)
- return 0;
-
-
- MOD_DEC_USE_COUNT;
- retval = pid;
- }
-
- release_ohci(ohci);
- return retval;
-}
-
-static int start_ohci(struct pci_dev *dev)
-{
- unsigned int mem_base = dev->base_address[0];
-
- /* If its OHCI, its memory */
- if (mem_base & PCI_BASE_ADDRESS_SPACE_IO)
- return -ENODEV;
-
- /* Get the memory address and map it for IO */
- mem_base &= PCI_BASE_ADDRESS_MEM_MASK;
-
- /*
- * FIXME ioremap_nocache isn't implemented on all CPUs (such
- * as the Alpha) [?] What should I use instead...
- *
- * The iounmap() is done on in release_ohci.
- */
- mem_base = (unsigned int) ioremap_nocache(mem_base, 4096);
-
- if (!mem_base) {
- printk("Error mapping OHCI memory\n");
- return -EFAULT;
- }
-
- return found_ohci(dev->irq, (void *) mem_base);
-}
-
-
-
-#ifdef CONFIG_APM
-static int handle_apm_event(apm_event_t event)
-{
- static int down = 0;
-
- switch (event) {
- case APM_SYS_SUSPEND:
- case APM_USER_SUSPEND:
- if (down) {
- printk(KERN_DEBUG "ohci: received extra suspend event\n");
- break;
- }
- down = 1;
- break;
- case APM_NORMAL_RESUME:
- case APM_CRITICAL_RESUME:
- if (!down) {
- printk(KERN_DEBUG "ohci: received bogus resume event\n");
- break;
- }
- down = 0;
- if (waitqueue_active(&root_hub)) {
- apm_resume = 1;
- wake_up(&root_hub);
- }
- break;
- }
- return 0;
-}
-#endif
-
-
- int usb_mouse_init(void);
-#ifdef MODULE
-
-void cleanup_module(void)
-{
-#ifdef CONFIG_APM
- apm_unregister_callback(&handle_apm_event);
-#endif
-}
-
-#define ohci_hcd_init init_module
-
-#endif
-
-#define PCI_CLASS_SERIAL_USB_OHCI 0x0C0310
-#define PCI_CLASS_SERIAL_USB_OHCI_PG 0x10
-
-
-int ohci_hcd_init(void)
-{
- int retval;
- struct pci_dev *dev = NULL;
-
- retval = -ENODEV;
-
- dev = NULL;
- while((dev = pci_find_class(PCI_CLASS_SERIAL_USB_OHCI, dev))) { /* OHCI */
- retval = start_ohci(dev);
- if (retval < 0) break;
-
-
-#ifdef CONFIG_USB_MOUSE
- usb_mouse_init();
-#endif
-#ifdef CONFIG_USB_KBD
- usb_kbd_init();
-#endif
- hub_init();
-#ifdef CONFIG_USB_AUDIO
- usb_audio_init();
-#endif
-#ifdef CONFIG_APM
- apm_register_callback(&handle_apm_event);
-#endif
-
- return 0;
- }
- return retval;
-}
-
-void cleanup_drivers(void)
-{
- hub_cleanup();
-#ifdef CONFIG_USB_MOUSE
- usb_mouse_cleanup();
-#endif
-}
-
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)