1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2022 Bjoern A. Zeeb 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/param.h> 29 #include <sys/types.h> 30 #include <sys/kernel.h> 31 #include <sys/malloc.h> 32 33 #include <linux/kernel.h> /* pr_debug */ 34 #include <linux/mhi.h> 35 36 static MALLOC_DEFINE(M_LKPIMHI, "lkpimhi", "LinuxKPI MHI compat"); 37 38 struct mhi_controller * 39 linuxkpi_mhi_alloc_controller(void) 40 { 41 struct mhi_controller *mhi_ctrl; 42 43 mhi_ctrl = malloc(sizeof(*mhi_ctrl), M_LKPIMHI, M_NOWAIT | M_ZERO); 44 45 return (mhi_ctrl); 46 } 47 48 void 49 linuxkpi_mhi_free_controller(struct mhi_controller *mhi_ctrl) 50 { 51 52 /* What else do we need to check that it is gone? */ 53 free(mhi_ctrl, M_LKPIMHI); 54 } 55 56 int 57 linuxkpi_mhi_register_controller(struct mhi_controller *mhi_ctrl, 58 const struct mhi_controller_config *cfg) 59 { 60 61 if (mhi_ctrl == NULL || cfg == NULL) 62 return (-EINVAL); 63 64 #define CHECK_FIELD(_f) \ 65 if (!mhi_ctrl->_f) \ 66 return (-ENXIO); 67 CHECK_FIELD(cntrl_dev); 68 CHECK_FIELD(regs); 69 CHECK_FIELD(irq); 70 CHECK_FIELD(reg_len); 71 CHECK_FIELD(nr_irqs); 72 73 CHECK_FIELD(runtime_get); 74 CHECK_FIELD(runtime_put); 75 CHECK_FIELD(status_cb); 76 CHECK_FIELD(read_reg); 77 CHECK_FIELD(write_reg); 78 #undef CHECK_FIELD 79 80 printf("%s: XXX-BZ TODO\n", __func__); 81 return (0); 82 } 83 84 void 85 linuxkpi_mhi_unregister_controller(struct mhi_controller *mhi_ctrl) 86 { 87 88 pr_debug("%s: TODO\n", __func__); 89 } 90