1 /* 2 * Copyright (c) 2009 The DragonFly Project. All rights reserved. 3 * 4 * This code is derived from software contributed to The DragonFly Project 5 * by Sepherosa Ziehau <sepherosa@gmail.com> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * 3. Neither the name of The DragonFly Project nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific, prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef __ACPI_CPU_PSTATE_H__ 36 #define __ACPI_CPU_PSTATE_H__ 37 38 #ifndef _SYS_BUS_H_ 39 #include <sys/bus.h> 40 #endif 41 42 struct acpi_pstate { 43 uint32_t st_freq; 44 uint32_t st_power; 45 uint32_t st_xsit_lat; 46 uint32_t st_bm_lat; 47 uint32_t st_cval; 48 uint32_t st_sval; 49 }; 50 51 struct acpi_pst_res { 52 ACPI_GENERIC_ADDRESS pr_gas; 53 struct resource *pr_res; 54 int pr_rid; 55 bus_space_tag_t pr_bt; 56 bus_space_handle_t pr_bh; 57 }; 58 59 struct acpi_pst_md { 60 int (*pmd_check_csr) 61 (const struct acpi_pst_res *, 62 const struct acpi_pst_res *); 63 int (*pmd_check_pstates) 64 (const struct acpi_pstate *, int); 65 66 int (*pmd_init) 67 (const struct acpi_pst_res *, 68 const struct acpi_pst_res *); 69 70 int (*pmd_set_pstate) 71 (const struct acpi_pst_res *, 72 const struct acpi_pst_res *, 73 const struct acpi_pstate *); 74 75 const struct acpi_pstate *(*pmd_get_pstate) 76 (const struct acpi_pst_res *, 77 const struct acpi_pstate *, int); 78 }; 79 80 const struct acpi_pst_md *acpi_pst_md_probe(void); 81 82 #endif /* !__ACPI_CPU_PSTATE_H__ */ 83