2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright 2003-2011 Netlogic Microsystems (Netlogic). All rights
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions are
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
18 * THIS SOFTWARE IS PROVIDED BY Netlogic Microsystems ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE
22 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/types.h>
36 #include <sys/systm.h>
38 #include <mips/nlm/hal/mips-extns.h>
39 #include <mips/nlm/hal/haldefs.h>
40 #include <mips/nlm/hal/iomap.h>
41 #include <mips/nlm/hal/sys.h>
42 #include <mips/nlm/xlp.h>
45 xlp_get_cpu_frequency(int node, int core)
47 uint64_t sysbase = nlm_get_sys_regbase(node);
48 unsigned int pll_divf, pll_divr, dfs_div, ext_div;
49 unsigned int rstval, dfsval;
51 rstval = nlm_read_sys_reg(sysbase, SYS_POWER_ON_RESET_CFG);
52 dfsval = nlm_read_sys_reg(sysbase, SYS_CORE_DFS_DIV_VALUE);
53 pll_divf = ((rstval >> 10) & 0x7f) + 1;
54 pll_divr = ((rstval >> 8) & 0x3) + 1;
55 if (!nlm_is_xlp8xx_ax())
56 ext_div = ((rstval >> 30) & 0x3) + 1;
59 dfs_div = ((dfsval >> (core << 2)) & 0xf) + 1;
61 return ((800000000ULL * pll_divf)/(3 * pll_divr * ext_div * dfs_div));
65 nlm_get_device_frequency(uint64_t sysbase, int devtype)
67 uint32_t pllctrl, dfsdiv, spf, spr, div_val;
70 pllctrl = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL);
72 div_val = nlm_read_sys_reg(sysbase, SYS_DFS_DIV_VALUE0);
75 div_val = nlm_read_sys_reg(sysbase, SYS_DFS_DIV_VALUE1);
77 dfsdiv = ((div_val >> (devtype << 2)) & 0xf) + 1;
78 spf = (pllctrl >> 3 & 0x7f) + 1;
79 spr = (pllctrl >> 1 & 0x03) + 1;
80 if (devtype == DFS_DEVICE_NAE && !nlm_is_xlp8xx_ax())
85 return ((400 * spf) / (3 * extra_div * spr * dfsdiv));
89 nlm_set_device_frequency(int node, int devtype, int frequency)
95 sysbase = nlm_get_sys_regbase(node);
96 cur_freq = nlm_get_device_frequency(sysbase, devtype);
97 if (cur_freq < (frequency - 5))
103 if ((cur_freq >= (frequency - 5)) && (cur_freq <= frequency))
106 nlm_write_sys_reg(sysbase, SYS_DFS_DIV_DEC_CTRL,
109 nlm_write_sys_reg(sysbase, SYS_DFS_DIV_INC_CTRL,
111 cur_freq = nlm_get_device_frequency(sysbase, devtype);
113 return (nlm_get_device_frequency(sysbase, devtype));