2 * Copyright 2003-2011 Netlogic Microsystems (Netlogic). All rights
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
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
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16 * THIS SOFTWARE IS PROVIDED BY Netlogic Microsystems ``AS IS'' AND
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19 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/types.h>
34 #include <sys/systm.h>
36 #include <mips/nlm/hal/mips-extns.h>
37 #include <mips/nlm/hal/haldefs.h>
38 #include <mips/nlm/hal/iomap.h>
39 #include <mips/nlm/hal/sys.h>
40 #include <mips/nlm/xlp.h>
43 xlp_get_cpu_frequency(int node, int core)
45 uint64_t sysbase = nlm_get_sys_regbase(node);
46 unsigned int pll_divf, pll_divr, dfs_div, ext_div;
47 unsigned int rstval, dfsval;
49 rstval = nlm_read_sys_reg(sysbase, SYS_POWER_ON_RESET_CFG);
50 dfsval = nlm_read_sys_reg(sysbase, SYS_CORE_DFS_DIV_VALUE);
51 pll_divf = ((rstval >> 10) & 0x7f) + 1;
52 pll_divr = ((rstval >> 8) & 0x3) + 1;
53 if (!nlm_is_xlp8xx_ax())
54 ext_div = ((rstval >> 30) & 0x3) + 1;
57 dfs_div = ((dfsval >> (core << 2)) & 0xf) + 1;
59 return ((800000000ULL * pll_divf)/(3 * pll_divr * ext_div * dfs_div));
63 nlm_get_device_frequency(uint64_t sysbase, int devtype)
65 uint32_t pllctrl, dfsdiv, spf, spr, div_val;
68 pllctrl = nlm_read_sys_reg(sysbase, SYS_PLL_CTRL);
70 div_val = nlm_read_sys_reg(sysbase, SYS_DFS_DIV_VALUE0);
73 div_val = nlm_read_sys_reg(sysbase, SYS_DFS_DIV_VALUE1);
75 dfsdiv = ((div_val >> (devtype << 2)) & 0xf) + 1;
76 spf = (pllctrl >> 3 & 0x7f) + 1;
77 spr = (pllctrl >> 1 & 0x03) + 1;
78 if (devtype == DFS_DEVICE_NAE && !nlm_is_xlp8xx_ax())
83 return ((400 * spf) / (3 * extra_div * spr * dfsdiv));
87 nlm_set_device_frequency(int node, int devtype, int frequency)
93 sysbase = nlm_get_sys_regbase(node);
94 cur_freq = nlm_get_device_frequency(sysbase, devtype);
95 if (cur_freq < (frequency - 5))
101 if ((cur_freq >= (frequency - 5)) && (cur_freq <= frequency))
104 nlm_write_sys_reg(sysbase, SYS_DFS_DIV_DEC_CTRL,
107 nlm_write_sys_reg(sysbase, SYS_DFS_DIV_INC_CTRL,
109 cur_freq = nlm_get_device_frequency(sysbase, devtype);
111 return (nlm_get_device_frequency(sysbase, devtype));