libpayload: Remove bitfield use from OHCI data structures
We agreed that bitfields are a Bad Idea[tm]. Change-Id: Ic04f151091c359912835b8b3db488d2d41bd4bbb Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/479 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Reviewed-by: Peter Stuge <peter@stuge.se>
This commit is contained in:
Patrick Georgi
Peter Stuge
parent
ad6331d25f
commit
c4348d0a44
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@ -188,7 +188,8 @@ dump_td(td_t *cur, int level)
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#ifdef USB_DEBUG
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static const char *spaces=" ";
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const char *spc=spaces+(10-level);
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debug("%std at %x (%s), condition code: %s\n", spc, cur, direction[cur->direction], completion_codes[cur->condition_code & 0xf]);
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debug("%std at %x (%s), condition code: %s\n", spc, cur, direction[(cur->config & TD_DIRECTION_MASK) >> TD_DIRECTION_SHIFT],
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completion_codes[(cur->config & TD_CC_MASK) >> TD_CC_SHIFT]);
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debug("%s toggle: %x\n", spc, cur->toggle);
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#endif
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}
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@ -201,7 +202,7 @@ wait_for_ed(usbdev_t *dev, ed_t *head)
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/* wait for results */
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while (((head->head_pointer & ~3) != head->tail_pointer) &&
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!(head->head_pointer & 1) &&
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((((td_t*)phys_to_virt(head->head_pointer & ~3))->condition_code & 0xf)>=0xe)) {
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((((td_t*)phys_to_virt(head->head_pointer & ~3))->config & TD_CC_MASK) >= TD_CC_NOACCESS)) {
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debug("intst: %x; ctrl: %x; cmdst: %x; head: %x -> %x, tail: %x, condition: %x\n",
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OHCI_INST(dev->controller)->opreg->HcInterruptStatus,
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OHCI_INST(dev->controller)->opreg->HcControl,
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@ -209,7 +210,7 @@ wait_for_ed(usbdev_t *dev, ed_t *head)
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head->head_pointer,
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((td_t*)phys_to_virt(head->head_pointer & ~3))->next_td,
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head->tail_pointer,
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((td_t*)phys_to_virt(head->head_pointer & ~3))->condition_code);
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(((td_t*)phys_to_virt(head->head_pointer & ~3))->config & TD_CC_MASK) >> TD_CC_SHIFT);
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mdelay(1);
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}
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mdelay(5);
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@ -266,12 +267,11 @@ ohci_control (usbdev_t *dev, direction_t dir, int drlen, void *devreq, int dalen
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}
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tds[td_count + 3].next_td = 0;
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tds[0].direction = OHCI_SETUP;
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tds[0].toggle_from_td = 1;
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tds[0].toggle = 0;
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tds[0].error_count = 0;
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tds[0].delay_interrupt = 7;
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tds[0].condition_code = 0xf;
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tds[0].config = TD_DIRECTION_SETUP |
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TD_DELAY_INTERRUPT_NODELAY |
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TD_TOGGLE_FROM_TD |
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TD_TOGGLE_DATA0 |
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TD_CC_NOACCESS;
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tds[0].current_buffer_pointer = virt_to_phys(devreq);
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tds[0].buffer_end = virt_to_phys(devreq + drlen - 1);
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@ -279,12 +279,10 @@ ohci_control (usbdev_t *dev, direction_t dir, int drlen, void *devreq, int dalen
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while (pages > 0) {
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cur++;
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cur->direction = (dir==IN)?OHCI_IN:OHCI_OUT;
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cur->toggle_from_td = 0;
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cur->toggle = 1;
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cur->error_count = 0;
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cur->delay_interrupt = 7;
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cur->condition_code = 0xf;
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cur->config = (dir==IN)?TD_DIRECTION_IN:TD_DIRECTION_OUT |
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TD_DELAY_INTERRUPT_NODELAY |
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TD_TOGGLE_FROM_ED |
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TD_CC_NOACCESS;
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cur->current_buffer_pointer = virt_to_phys(data);
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pages--;
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int consumed = (4096 - ((unsigned long)data % 4096));
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@ -308,12 +306,11 @@ ohci_control (usbdev_t *dev, direction_t dir, int drlen, void *devreq, int dalen
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}
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cur++;
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cur->direction = (dir==IN)?OHCI_OUT:OHCI_IN;
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cur->toggle_from_td = 1;
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cur->toggle = 1;
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cur->error_count = 0;
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cur->delay_interrupt = 7;
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cur->condition_code = 0xf;
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cur->config = (dir==IN)?TD_DIRECTION_OUT:TD_DIRECTION_IN |
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TD_DELAY_INTERRUPT_NODELAY |
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TD_TOGGLE_FROM_TD |
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TD_TOGGLE_DATA1 |
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TD_CC_NOACCESS;
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cur->current_buffer_pointer = 0;
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cur->buffer_end = 0;
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@ -323,18 +320,15 @@ ohci_control (usbdev_t *dev, direction_t dir, int drlen, void *devreq, int dalen
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/* Data structures */
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ed_t *head = memalign(sizeof(ed_t), sizeof(ed_t));
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memset((void*)head, 0, sizeof(*head));
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head->function_address = dev->address;
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head->endpoint_number = 0;
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head->direction = OHCI_FROM_TD;
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head->lowspeed = dev->speed;
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head->format = 0;
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head->maximum_packet_size = dev->endpoints[0].maxpacketsize;
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head->config = (dev->address << ED_FUNC_SHIFT) |
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(0 << ED_EP_SHIFT) |
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(OHCI_FROM_TD << ED_DIR_SHIFT) |
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(dev->speed?ED_LOWSPEED:0) |
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(dev->endpoints[0].maxpacketsize << ED_MPS_SHIFT);
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head->tail_pointer = virt_to_phys(cur);
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head->head_pointer = virt_to_phys(tds);
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head->halted = 0;
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head->toggle = 0;
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debug("doing control transfer with %x. first_td at %x\n", head->function_address, virt_to_phys(tds));
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debug("doing control transfer with %x. first_td at %x\n", head->config & ED_FUNC_MASK, virt_to_phys(tds));
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/* activate schedule */
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OHCI_INST(dev->controller)->opreg->HcControlHeadED = virt_to_phys(head);
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@ -379,11 +373,10 @@ ohci_bulk (endpoint_t *ep, int dalen, u8 *data, int finalize)
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}
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for (cur = tds; cur->next_td != 0; cur++) {
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cur->toggle_from_td = 0;
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cur->error_count = 0;
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cur->delay_interrupt = 7;
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cur->condition_code = 0xf;
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cur->direction = (ep->direction==IN)?OHCI_IN:OHCI_OUT;
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cur->config = (ep->direction==IN)?TD_DIRECTION_IN:TD_DIRECTION_OUT |
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TD_DELAY_INTERRUPT_NODELAY |
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TD_TOGGLE_FROM_ED |
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TD_CC_NOACCESS;
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cur->current_buffer_pointer = virt_to_phys(data);
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pages--;
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if (dalen == 0) {
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@ -415,18 +408,16 @@ ohci_bulk (endpoint_t *ep, int dalen, u8 *data, int finalize)
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/* Data structures */
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ed_t *head = memalign(sizeof(ed_t), sizeof(ed_t));
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memset((void*)head, 0, sizeof(*head));
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head->function_address = ep->dev->address;
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head->endpoint_number = ep->endpoint & 0xf;
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head->direction = (ep->direction==IN)?OHCI_IN:OHCI_OUT;
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head->lowspeed = ep->dev->speed;
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head->format = 0;
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head->maximum_packet_size = ep->maxpacketsize;
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head->config = (ep->dev->address << ED_FUNC_SHIFT) |
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((ep->endpoint & 0xf) << ED_EP_SHIFT) |
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(((ep->direction==IN)?OHCI_IN:OHCI_OUT) << ED_DIR_SHIFT) |
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(ep->dev->speed?ED_LOWSPEED:0) |
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(ep->maxpacketsize << ED_MPS_SHIFT);
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head->tail_pointer = virt_to_phys(cur);
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head->head_pointer = virt_to_phys(tds);
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head->halted = 0;
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head->toggle = ep->toggle;
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head->head_pointer = virt_to_phys(tds) | (ep->toggle?ED_TOGGLE:0);
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debug("doing bulk transfer with %x(%x). first_td at %x, last %x\n", head->function_address, head->endpoint_number, virt_to_phys(tds), virt_to_phys(cur));
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debug("doing bulk transfer with %x(%x). first_td at %x, last %x\n", head->config & ED_FUNC_MASK,
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(head->config & ED_EP_MASK) >> ED_EP_SHIFT, virt_to_phys(tds), virt_to_phys(cur));
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/* activate schedule */
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OHCI_INST(ep->dev->controller)->opreg->HcBulkHeadED = virt_to_phys(head);
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@ -436,7 +427,7 @@ ohci_bulk (endpoint_t *ep, int dalen, u8 *data, int finalize)
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int failure = wait_for_ed(ep->dev, head);
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OHCI_INST(ep->dev->controller)->opreg->HcControl &= ~BulkListEnable;
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ep->toggle = head->toggle;
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ep->toggle = head->head_pointer & ED_TOGGLE;
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/* free memory */
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free((void*)tds);
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@ -206,49 +206,43 @@
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typedef enum { OHCI_SETUP=0, OHCI_OUT=1, OHCI_IN=2, OHCI_FROM_TD=3 } ohci_pid_t;
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typedef volatile struct {
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union {
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u32 dword0;
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struct {
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unsigned long function_address:7;
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unsigned long endpoint_number:4;
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unsigned long direction:2;
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unsigned long lowspeed:1;
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unsigned long skip:1;
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unsigned long format:1;
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unsigned long maximum_packet_size:11;
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unsigned long:5;
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} __attribute__ ((packed));
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};
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u32 config;
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u32 tail_pointer;
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union {
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u32 head_pointer;
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struct {
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unsigned long halted:1;
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unsigned long toggle:1;
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unsigned long:30;
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} __attribute__ ((packed));
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};
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u32 head_pointer;
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u32 next_ed;
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} __attribute__ ((packed)) ed_t;
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#define ED_HALTED 1
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#define ED_TOGGLE 2
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#define ED_FUNC_SHIFT 0
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#define ED_FUNC_MASK MASK(7, 0)
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#define ED_EP_SHIFT 7
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#define ED_EP_MASK MASK(4, 7)
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#define ED_DIR_SHIFT 11
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#define ED_DIR_MASK MASK(2, 11)
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#define ED_LOWSPEED (1 << 13)
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#define ED_MPS_SHIFT 16
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typedef volatile struct {
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union {
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u32 dword0;
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struct {
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unsigned long:18;
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unsigned long buffer_rounding:1;
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unsigned long direction:2;
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unsigned long delay_interrupt:3;
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unsigned long toggle:1;
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unsigned long toggle_from_td:1;
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unsigned long error_count:2;
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unsigned long condition_code:4;
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} __attribute__ ((packed));
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};
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u32 config;
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u32 current_buffer_pointer;
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u32 next_td;
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u32 buffer_end;
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} __attribute__ ((packed)) td_t;
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#define TD_DIRECTION_SHIFT 19
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#define TD_DIRECTION_MASK MASK(2, TD_DIRECTION_SHIFT)
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#define TD_DIRECTION_SETUP OHCI_SETUP << TD_DIRECTION_SHIFT
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#define TD_DIRECTION_IN OHCI_IN << TD_DIRECTION_SHIFT
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#define TD_DIRECTION_OUT OHCI_OUT << TD_DIRECTION_SHIFT
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#define TD_DELAY_INTERRUPT_NODELAY (7 << 21)
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#define TD_TOGGLE_DATA0 0
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#define TD_TOGGLE_DATA1 (1 << 24)
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#define TD_TOGGLE_FROM_ED 0
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#define TD_TOGGLE_FROM_TD (1 << 25)
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#define TD_CC_SHIFT 28
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#define TD_CC_MASK MASK(4, TD_CC_SHIFT)
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#define TD_CC_NOERR 0
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#define TD_CC_NOACCESS (14 << TD_CC_SHIFT) /* the lower of the two values, so "no access" can be tested with >= */
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#define OHCI_INST(controller) ((ohci_t*)((controller)->instance))
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