OHCI USB isochronous transfers support (Arnon Gilboa).
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3493 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog
parent
046833eae3
commit
7bfe577702
357
hw/usb-ohci.c
357
hw/usb-ohci.c
@ -32,6 +32,7 @@
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//#define DEBUG_OHCI
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/* Dump packet contents. */
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//#define DEBUG_PACKET
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//#define DEBUG_ISOCH
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/* This causes frames to occur 1000x slower */
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//#define OHCI_TIME_WARP 1
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@ -132,8 +133,8 @@ static void ohci_bus_stop(OHCIState *ohci);
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#define OHCI_ED_S (1<<13)
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#define OHCI_ED_K (1<<14)
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#define OHCI_ED_F (1<<15)
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#define OHCI_ED_MPS_SHIFT 7
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#define OHCI_ED_MPS_MASK (0xf<<OHCI_ED_FA_SHIFT)
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#define OHCI_ED_MPS_SHIFT 16
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#define OHCI_ED_MPS_MASK (0x7ff<<OHCI_ED_MPS_SHIFT)
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/* Flags in the head field of an Endpoint Desciptor. */
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#define OHCI_ED_H 1
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@ -152,6 +153,22 @@ static void ohci_bus_stop(OHCIState *ohci);
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#define OHCI_TD_CC_SHIFT 28
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#define OHCI_TD_CC_MASK (0xf<<OHCI_TD_CC_SHIFT)
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/* Bitfields for the first word of an Isochronous Transfer Desciptor. */
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/* CC & DI - same as in the General Transfer Desciptor */
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#define OHCI_TD_SF_SHIFT 0
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#define OHCI_TD_SF_MASK (0xffff<<OHCI_TD_SF_SHIFT)
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#define OHCI_TD_FC_SHIFT 24
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#define OHCI_TD_FC_MASK (7<<OHCI_TD_FC_SHIFT)
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/* Isochronous Transfer Desciptor - Offset / PacketStatusWord */
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#define OHCI_TD_PSW_CC_SHIFT 12
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#define OHCI_TD_PSW_CC_MASK (0xf<<OHCI_TD_PSW_CC_SHIFT)
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#define OHCI_TD_PSW_SIZE_SHIFT 0
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#define OHCI_TD_PSW_SIZE_MASK (0xfff<<OHCI_TD_PSW_SIZE_SHIFT)
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#define OHCI_PAGE_MASK 0xfffff000
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#define OHCI_OFFSET_MASK 0xfff
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#define OHCI_DPTR_MASK 0xfffffff0
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#define OHCI_BM(val, field) \
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@ -178,6 +195,15 @@ struct ohci_td {
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uint32_t be;
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};
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/* Isochronous transfer descriptor */
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struct ohci_iso_td {
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uint32_t flags;
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uint32_t bp;
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uint32_t next;
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uint32_t be;
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uint16_t offset[8];
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};
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#define USB_HZ 12000000
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/* OHCI Local stuff */
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@ -421,6 +447,32 @@ static inline int put_dwords(uint32_t addr, uint32_t *buf, int num)
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return 1;
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}
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/* Get an array of words from main memory */
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static inline int get_words(uint32_t addr, uint16_t *buf, int num)
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{
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int i;
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for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
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cpu_physical_memory_rw(addr, (uint8_t *)buf, sizeof(*buf), 0);
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*buf = le16_to_cpu(*buf);
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}
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return 1;
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}
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/* Put an array of words in to main memory */
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static inline int put_words(uint32_t addr, uint16_t *buf, int num)
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{
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int i;
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for (i = 0; i < num; i++, buf++, addr += sizeof(*buf)) {
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uint16_t tmp = cpu_to_le16(*buf);
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cpu_physical_memory_rw(addr, (uint8_t *)&tmp, sizeof(tmp), 1);
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}
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return 1;
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}
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static inline int ohci_read_ed(uint32_t addr, struct ohci_ed *ed)
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{
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return get_dwords(addr, (uint32_t *)ed, sizeof(*ed) >> 2);
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@ -431,6 +483,12 @@ static inline int ohci_read_td(uint32_t addr, struct ohci_td *td)
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return get_dwords(addr, (uint32_t *)td, sizeof(*td) >> 2);
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}
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static inline int ohci_read_iso_td(uint32_t addr, struct ohci_iso_td *td)
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{
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return (get_dwords(addr, (uint32_t *)td, 4) &&
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get_words(addr + 16, td->offset, 8));
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}
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static inline int ohci_put_ed(uint32_t addr, struct ohci_ed *ed)
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{
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return put_dwords(addr, (uint32_t *)ed, sizeof(*ed) >> 2);
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@ -441,6 +499,12 @@ static inline int ohci_put_td(uint32_t addr, struct ohci_td *td)
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return put_dwords(addr, (uint32_t *)td, sizeof(*td) >> 2);
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}
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static inline int ohci_put_iso_td(uint32_t addr, struct ohci_iso_td *td)
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{
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return (put_dwords(addr, (uint32_t *)td, 4) &&
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put_words(addr + 16, td->offset, 8));
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}
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/* Read/Write the contents of a TD from/to main memory. */
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static void ohci_copy_td(struct ohci_td *td, uint8_t *buf, int len, int write)
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{
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@ -459,16 +523,270 @@ static void ohci_copy_td(struct ohci_td *td, uint8_t *buf, int len, int write)
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cpu_physical_memory_rw(ptr, buf, len - n, write);
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}
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static void ohci_process_lists(OHCIState *ohci);
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/* Read/Write the contents of an ISO TD from/to main memory. */
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static void ohci_copy_iso_td(uint32_t start_addr, uint32_t end_addr,
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uint8_t *buf, int len, int write)
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{
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uint32_t ptr;
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uint32_t n;
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static void ohci_async_complete_packet(USBPacket * packet, void *opaque)
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ptr = start_addr;
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n = 0x1000 - (ptr & 0xfff);
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if (n > len)
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n = len;
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cpu_physical_memory_rw(ptr, buf, n, write);
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if (n == len)
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return;
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ptr = end_addr & ~0xfffu;
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buf += n;
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cpu_physical_memory_rw(ptr, buf, len - n, write);
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}
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static void ohci_process_lists(OHCIState *ohci, int completion);
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static void ohci_async_complete_packet(USBPacket *packet, void *opaque)
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{
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OHCIState *ohci = opaque;
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#ifdef DEBUG_PACKET
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dprintf("Async packet complete\n");
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#endif
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ohci->async_complete = 1;
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ohci_process_lists(ohci);
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ohci_process_lists(ohci, 1);
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}
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#define USUB(a, b) ((int16_t)((uint16_t)(a) - (uint16_t)(b)))
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static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed,
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int completion)
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{
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int dir;
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size_t len = 0;
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char *str = NULL;
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int pid;
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int ret;
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int i;
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USBDevice *dev;
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struct ohci_iso_td iso_td;
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uint32_t addr;
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uint16_t starting_frame;
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int16_t relative_frame_number;
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int frame_count;
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uint32_t start_offset, next_offset, end_offset = 0;
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uint32_t start_addr, end_addr;
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addr = ed->head & OHCI_DPTR_MASK;
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if (!ohci_read_iso_td(addr, &iso_td)) {
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printf("usb-ohci: ISO_TD read error at %x\n", addr);
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return 0;
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}
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starting_frame = OHCI_BM(iso_td.flags, TD_SF);
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frame_count = OHCI_BM(iso_td.flags, TD_FC);
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relative_frame_number = USUB(ohci->frame_number, starting_frame);
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#ifdef DEBUG_ISOCH
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printf("--- ISO_TD ED head 0x%.8x tailp 0x%.8x\n"
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"0x%.8x 0x%.8x 0x%.8x 0x%.8x\n"
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"0x%.8x 0x%.8x 0x%.8x 0x%.8x\n"
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"0x%.8x 0x%.8x 0x%.8x 0x%.8x\n"
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"frame_number 0x%.8x starting_frame 0x%.8x\n"
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"frame_count 0x%.8x relative %d\n"
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"di 0x%.8x cc 0x%.8x\n",
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ed->head & OHCI_DPTR_MASK, ed->tail & OHCI_DPTR_MASK,
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iso_td.flags, iso_td.bp, iso_td.next, iso_td.be,
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iso_td.offset[0], iso_td.offset[1], iso_td.offset[2], iso_td.offset[3],
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iso_td.offset[4], iso_td.offset[5], iso_td.offset[6], iso_td.offset[7],
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ohci->frame_number, starting_frame,
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frame_count, relative_frame_number,
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OHCI_BM(iso_td.flags, TD_DI), OHCI_BM(iso_td.flags, TD_CC));
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#endif
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if (relative_frame_number < 0) {
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dprintf("usb-ohci: ISO_TD R=%d < 0\n", relative_frame_number);
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return 1;
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} else if (relative_frame_number > frame_count) {
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/* ISO TD expired - retire the TD to the Done Queue and continue with
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the next ISO TD of the same ED */
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dprintf("usb-ohci: ISO_TD R=%d > FC=%d\n", relative_frame_number,
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frame_count);
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OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_DATAOVERRUN);
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ed->head &= ~OHCI_DPTR_MASK;
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ed->head |= (iso_td.next & OHCI_DPTR_MASK);
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iso_td.next = ohci->done;
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ohci->done = addr;
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i = OHCI_BM(iso_td.flags, TD_DI);
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if (i < ohci->done_count)
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ohci->done_count = i;
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ohci_put_iso_td(addr, &iso_td);
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return 0;
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}
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dir = OHCI_BM(ed->flags, ED_D);
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switch (dir) {
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case OHCI_TD_DIR_IN:
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str = "in";
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pid = USB_TOKEN_IN;
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break;
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case OHCI_TD_DIR_OUT:
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str = "out";
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pid = USB_TOKEN_OUT;
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break;
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case OHCI_TD_DIR_SETUP:
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str = "setup";
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pid = USB_TOKEN_SETUP;
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break;
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default:
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printf("usb-ohci: Bad direction %d\n", dir);
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return 1;
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}
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if (!iso_td.bp || !iso_td.be) {
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printf("usb-ohci: ISO_TD bp 0x%.8x be 0x%.8x\n", iso_td.bp, iso_td.be);
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return 1;
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}
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start_offset = iso_td.offset[relative_frame_number];
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next_offset = iso_td.offset[relative_frame_number + 1];
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if (!(OHCI_BM(start_offset, TD_PSW_CC) & 0xe) ||
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((relative_frame_number < frame_count) &&
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!(OHCI_BM(next_offset, TD_PSW_CC) & 0xe))) {
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printf("usb-ohci: ISO_TD cc != not accessed 0x%.8x 0x%.8x\n",
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start_offset, next_offset);
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return 1;
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}
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if ((relative_frame_number < frame_count) && (start_offset > next_offset)) {
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printf("usb-ohci: ISO_TD start_offset=0x%.8x > next_offset=0x%.8x\n",
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start_offset, next_offset);
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return 1;
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}
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if ((start_offset & 0x1000) == 0) {
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start_addr = (iso_td.bp & OHCI_PAGE_MASK) |
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(start_offset & OHCI_OFFSET_MASK);
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} else {
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start_addr = (iso_td.be & OHCI_PAGE_MASK) |
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(start_offset & OHCI_OFFSET_MASK);
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}
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if (relative_frame_number < frame_count) {
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end_offset = next_offset - 1;
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if ((end_offset & 0x1000) == 0) {
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end_addr = (iso_td.bp & OHCI_PAGE_MASK) |
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(end_offset & OHCI_OFFSET_MASK);
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} else {
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end_addr = (iso_td.be & OHCI_PAGE_MASK) |
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(end_offset & OHCI_OFFSET_MASK);
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}
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} else {
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/* Last packet in the ISO TD */
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end_addr = iso_td.be;
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}
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if ((start_addr & OHCI_PAGE_MASK) != (end_addr & OHCI_PAGE_MASK)) {
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len = (end_addr & OHCI_OFFSET_MASK) + 0x1001
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- (start_addr & OHCI_OFFSET_MASK);
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} else {
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len = end_addr - start_addr + 1;
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}
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if (len && dir != OHCI_TD_DIR_IN) {
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ohci_copy_iso_td(start_addr, end_addr, ohci->usb_buf, len, 0);
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}
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if (completion) {
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ret = ohci->usb_packet.len;
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} else {
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ret = USB_RET_NODEV;
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for (i = 0; i < ohci->num_ports; i++) {
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dev = ohci->rhport[i].port.dev;
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if ((ohci->rhport[i].ctrl & OHCI_PORT_PES) == 0)
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continue;
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ohci->usb_packet.pid = pid;
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ohci->usb_packet.devaddr = OHCI_BM(ed->flags, ED_FA);
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ohci->usb_packet.devep = OHCI_BM(ed->flags, ED_EN);
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ohci->usb_packet.data = ohci->usb_buf;
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ohci->usb_packet.len = len;
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ohci->usb_packet.complete_cb = ohci_async_complete_packet;
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ohci->usb_packet.complete_opaque = ohci;
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ret = dev->handle_packet(dev, &ohci->usb_packet);
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if (ret != USB_RET_NODEV)
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break;
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}
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if (ret == USB_RET_ASYNC) {
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return 1;
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}
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}
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#ifdef DEBUG_ISOCH
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printf("so 0x%.8x eo 0x%.8x\nsa 0x%.8x ea 0x%.8x\ndir %s len %zu ret %d\n",
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start_offset, end_offset, start_addr, end_addr, str, len, ret);
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#endif
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/* Writeback */
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if (dir == OHCI_TD_DIR_IN && ret >= 0 && ret <= len) {
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/* IN transfer succeeded */
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ohci_copy_iso_td(start_addr, end_addr, ohci->usb_buf, ret, 1);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
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OHCI_CC_NOERROR);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, ret);
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} else if (dir == OHCI_TD_DIR_OUT && ret == len) {
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/* OUT transfer succeeded */
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
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OHCI_CC_NOERROR);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE, 0);
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} else {
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if (ret > len) {
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printf("usb-ohci: DataOverrun %d > %zu\n", ret, len);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
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OHCI_CC_DATAOVERRUN);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
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len);
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} else if (ret >= 0) {
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printf("usb-ohci: DataUnderrun %d\n", ret);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
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OHCI_CC_DATAUNDERRUN);
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} else {
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switch (ret) {
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case USB_RET_NODEV:
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
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OHCI_CC_DEVICENOTRESPONDING);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
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0);
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break;
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case USB_RET_NAK:
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case USB_RET_STALL:
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printf("usb-ohci: got NAK/STALL %d\n", ret);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
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OHCI_CC_STALL);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_SIZE,
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0);
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break;
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default:
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printf("usb-ohci: Bad device response %d\n", ret);
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OHCI_SET_BM(iso_td.offset[relative_frame_number], TD_PSW_CC,
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OHCI_CC_UNDEXPETEDPID);
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break;
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}
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}
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}
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if (relative_frame_number == frame_count) {
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/* Last data packet of ISO TD - retire the TD to the Done Queue */
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OHCI_SET_BM(iso_td.flags, TD_CC, OHCI_CC_NOERROR);
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ed->head &= ~OHCI_DPTR_MASK;
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ed->head |= (iso_td.next & OHCI_DPTR_MASK);
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iso_td.next = ohci->done;
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ohci->done = addr;
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i = OHCI_BM(iso_td.flags, TD_DI);
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if (i < ohci->done_count)
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ohci->done_count = i;
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}
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ohci_put_iso_td(addr, &iso_td);
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return 1;
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}
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/* Service a transport descriptor.
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@ -671,7 +989,7 @@ static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed)
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}
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/* Service an endpoint list. Returns nonzero if active TD were found. */
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static int ohci_service_ed_list(OHCIState *ohci, uint32_t head)
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static int ohci_service_ed_list(OHCIState *ohci, uint32_t head, int completion)
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{
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struct ohci_ed ed;
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uint32_t next_ed;
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@ -702,10 +1020,6 @@ static int ohci_service_ed_list(OHCIState *ohci, uint32_t head)
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continue;
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}
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/* Skip isochronous endpoints. */
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if (ed.flags & OHCI_ED_F)
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continue;
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while ((ed.head & OHCI_DPTR_MASK) != ed.tail) {
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#ifdef DEBUG_PACKET
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dprintf("ED @ 0x%.8x fa=%u en=%u d=%u s=%u k=%u f=%u mps=%u "
|
||||
@ -719,8 +1033,14 @@ static int ohci_service_ed_list(OHCIState *ohci, uint32_t head)
|
||||
#endif
|
||||
active = 1;
|
||||
|
||||
if (ohci_service_td(ohci, &ed))
|
||||
break;
|
||||
if ((ed.flags & OHCI_ED_F) == 0) {
|
||||
if (ohci_service_td(ohci, &ed))
|
||||
break;
|
||||
} else {
|
||||
/* Handle isochronous endpoints */
|
||||
if (ohci_service_iso_td(ohci, &ed, completion))
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
ohci_put_ed(cur, &ed);
|
||||
@ -738,19 +1058,19 @@ static void ohci_sof(OHCIState *ohci)
|
||||
}
|
||||
|
||||
/* Process Control and Bulk lists. */
|
||||
static void ohci_process_lists(OHCIState *ohci)
|
||||
static void ohci_process_lists(OHCIState *ohci, int completion)
|
||||
{
|
||||
if ((ohci->ctl & OHCI_CTL_CLE) && (ohci->status & OHCI_STATUS_CLF)) {
|
||||
if (ohci->ctrl_cur && ohci->ctrl_cur != ohci->ctrl_head)
|
||||
dprintf("usb-ohci: head %x, cur %x\n", ohci->ctrl_head, ohci->ctrl_cur);
|
||||
if (!ohci_service_ed_list(ohci, ohci->ctrl_head)) {
|
||||
if (!ohci_service_ed_list(ohci, ohci->ctrl_head, completion)) {
|
||||
ohci->ctrl_cur = 0;
|
||||
ohci->status &= ~OHCI_STATUS_CLF;
|
||||
}
|
||||
}
|
||||
|
||||
if ((ohci->ctl & OHCI_CTL_BLE) && (ohci->status & OHCI_STATUS_BLF)) {
|
||||
if (!ohci_service_ed_list(ohci, ohci->bulk_head)) {
|
||||
if (!ohci_service_ed_list(ohci, ohci->bulk_head, completion)) {
|
||||
ohci->bulk_cur = 0;
|
||||
ohci->status &= ~OHCI_STATUS_BLF;
|
||||
}
|
||||
@ -770,7 +1090,7 @@ static void ohci_frame_boundary(void *opaque)
|
||||
int n;
|
||||
|
||||
n = ohci->frame_number & 0x1f;
|
||||
ohci_service_ed_list(ohci, le32_to_cpu(hcca.intr[n]));
|
||||
ohci_service_ed_list(ohci, le32_to_cpu(hcca.intr[n]), 0);
|
||||
}
|
||||
|
||||
/* Cancel all pending packets if either of the lists has been disabled. */
|
||||
@ -780,7 +1100,7 @@ static void ohci_frame_boundary(void *opaque)
|
||||
ohci->async_td = 0;
|
||||
}
|
||||
ohci->old_ctl = ohci->ctl;
|
||||
ohci_process_lists(ohci);
|
||||
ohci_process_lists(ohci, 0);
|
||||
|
||||
/* Frame boundary, so do EOF stuf here */
|
||||
ohci->frt = ohci->fit;
|
||||
@ -1206,6 +1526,9 @@ static void ohci_mem_write(void *ptr, target_phys_addr_t addr, uint32_t val)
|
||||
ohci_set_frame_interval(ohci, val);
|
||||
break;
|
||||
|
||||
case 15: /* HcFmNumber */
|
||||
break;
|
||||
|
||||
case 16: /* HcPeriodicStart */
|
||||
ohci->pstart = val & 0xffff;
|
||||
break;
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user