| 1 | /*
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| 2 | * Copyright (c) 2017 Jaroslav Jindrak
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup drvusbxhci
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | * @brief Command sending functions.
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| 34 | */
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| 35 |
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| 36 | #include <errno.h>
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| 37 | #include <str_error.h>
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| 38 | #include <usb/debug.h>
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| 39 | #include <usb/host/utils/malloc32.h>
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| 40 | #include "commands.h"
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| 41 | #include "debug.h"
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| 42 | #include "hc.h"
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| 43 | #include "hw_struct/trb.h"
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| 44 |
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| 45 | static inline int ring_doorbell(xhci_hc_t *hc, unsigned doorbell, unsigned target)
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| 46 | {
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| 47 | uint32_t v = host2xhci(32, target & BIT_RRANGE(uint32_t, 7));
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| 48 | pio_write_32(&hc->db_arry[doorbell], v);
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| 49 | return EOK;
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| 50 | }
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| 51 |
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| 52 | static inline int enqueue_trb(xhci_hc_t *hc, xhci_trb_t *trb,
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| 53 | unsigned doorbell, unsigned target)
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| 54 | {
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| 55 | xhci_trb_ring_enqueue(&hc->command_ring, trb);
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| 56 | ring_doorbell(hc, doorbell, target);
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| 57 |
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| 58 | xhci_dump_trb(trb);
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| 59 | usb_log_debug2("HC(%p): Sent TRB", hc);
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| 60 |
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| 61 | return EOK;
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| 62 | }
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| 63 |
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| 64 | int xhci_send_no_op_command(xhci_hc_t *hc)
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| 65 | {
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| 66 | xhci_trb_t trb;
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| 67 | memset(&trb, 0, sizeof(trb));
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| 68 |
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| 69 | trb.control = host2xhci(32, XHCI_TRB_TYPE_NO_OP_CMD << 10);
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| 70 |
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| 71 | return enqueue_trb(hc, &trb, 0, 0);
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| 72 | }
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| 73 |
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| 74 | int xhci_send_enable_slot_command(xhci_hc_t *hc)
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| 75 | {
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| 76 | xhci_trb_t trb;
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| 77 | memset(&trb, 0, sizeof(trb));
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| 78 |
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| 79 | trb.control = host2xhci(32, XHCI_TRB_TYPE_ENABLE_SLOT_CMD << 10);
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| 80 | trb.control |= host2xhci(32, XHCI_REG_RD(hc->xecp, XHCI_EC_SP_SLOT_TYPE) << 16);
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| 81 | trb.control |= host2xhci(32, hc->command_ring.pcs);
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| 82 |
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| 83 | // TODO: Setup input control context.
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| 84 |
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| 85 | return enqueue_trb(hc, &trb, 0, 0);
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| 86 | }
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| 87 |
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| 88 | int xhci_handle_command_completion(xhci_hc_t *hc, xhci_trb_t *trb)
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| 89 | {
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| 90 | usb_log_debug2("HC(%p) Command completed.", hc);
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| 91 | xhci_dump_trb(trb);
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| 92 |
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| 93 | int code = XHCI_DWORD_EXTRACT(trb->status, 31, 24);
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| 94 | if (code != XHCI_TRBC_SUCCESS)
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| 95 | return EINVAL; // TODO: Find a better error code/handler.
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| 96 |
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| 97 | xhci_trb_t *command = (xhci_trb_t *) XHCI_QWORD_EXTRACT(trb->parameter, 63, 4);
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| 98 | switch(TRB_TYPE(*command)) {
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| 99 | default:
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| 100 | // TODO:
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| 101 | break;
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| 102 | }
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| 103 |
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| 104 | return EOK;
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| 105 | }
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| 106 |
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| 107 |
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| 108 | /**
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| 109 | * @}
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| 110 | */
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