| 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 | * Utility functions used to place TRBs onto the command ring.
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| 34 | */
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| 35 |
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| 36 | #ifndef XHCI_COMMANDS_H
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| 37 | #define XHCI_COMMANDS_H
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| 38 |
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| 39 | #include <adt/list.h>
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| 40 | #include <stdbool.h>
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| 41 |
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| 42 | typedef struct xhci_hc xhci_hc_t;
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| 43 | typedef struct xhci_trb xhci_trb_t;
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| 44 | typedef struct xhci_input_ctx xhci_input_ctx_t;
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| 45 |
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| 46 | typedef struct xhci_command {
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| 47 | link_t link;
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| 48 |
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| 49 | xhci_trb_t *trb;
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| 50 | xhci_input_ctx_t *ictx;
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| 51 | uint32_t slot_id;
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| 52 | uint32_t status;
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| 53 |
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| 54 | bool completed;
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| 55 | bool has_owner;
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| 56 | } xhci_cmd_t;
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| 57 |
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| 58 | int xhci_init_commands(xhci_hc_t *);
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| 59 | void xhci_fini_commands(xhci_hc_t *);
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| 60 | int xhci_wait_for_command(xhci_cmd_t *, uint32_t);
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| 61 | xhci_cmd_t *xhci_alloc_command(void);
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| 62 | void xhci_free_command(xhci_cmd_t *);
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| 63 |
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| 64 | void xhci_stop_command_ring(xhci_hc_t *);
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| 65 | void xhci_abort_command_ring(xhci_hc_t *);
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| 66 | void xhci_start_command_ring(xhci_hc_t *);
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| 67 |
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| 68 | int xhci_send_no_op_command(xhci_hc_t *, xhci_cmd_t *);
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| 69 | int xhci_send_enable_slot_command(xhci_hc_t *, xhci_cmd_t *);
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| 70 | int xhci_send_disable_slot_command(xhci_hc_t *, xhci_cmd_t *);
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| 71 | int xhci_send_address_device_command(xhci_hc_t *, xhci_cmd_t *);
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| 72 | int xhci_send_configure_endpoint_command(xhci_hc_t *, xhci_cmd_t *);
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| 73 | int xhci_send_evaluate_context_command(xhci_hc_t *, xhci_cmd_t *);
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| 74 | int xhci_send_reset_endpoint_command(xhci_hc_t *, xhci_cmd_t *, uint32_t, uint8_t);
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| 75 | int xhci_send_stop_endpoint_command(xhci_hc_t *, xhci_cmd_t *, uint32_t, uint8_t);
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| 76 | int xhci_send_set_dequeue_ptr_command(xhci_hc_t *, xhci_cmd_t *, uintptr_t, uint16_t, uint32_t);
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| 77 | int xhci_send_reset_device_command(xhci_hc_t *, xhci_cmd_t *);
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| 78 | // TODO: Force event (optional normative, for VMM, section 4.6.12).
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| 79 | // TODO: Negotiate bandwidth (optional normative, section 4.6.13).
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| 80 | // TODO: Set latency tolerance value (optional normative, section 4.6.14).
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| 81 | // TODO: Get port bandwidth (mandatory, but needs root hub implementation, section 4.6.15).
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| 82 | // TODO: Force header (mandatory, but needs root hub implementation, section 4.6.16).
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| 83 |
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| 84 | int xhci_handle_command_completion(xhci_hc_t *, xhci_trb_t *);
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| 85 |
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| 86 | #endif
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| 87 |
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| 88 |
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| 89 |
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| 90 | /**
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| 91 | * @}
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| 92 | */
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