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TOMOYO Linux Cross Reference
Linux/arch/mips/netlogic/xlp/nlm_hal.c

Version: ~ [ linux-5.4-rc3 ] ~ [ linux-5.3.6 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.79 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.149 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.196 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.196 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.75 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  1 /*
  2  * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
  3  * reserved.
  4  *
  5  * This software is available to you under a choice of one of two
  6  * licenses.  You may choose to be licensed under the terms of the GNU
  7  * General Public License (GPL) Version 2, available from the file
  8  * COPYING in the main directory of this source tree, or the NetLogic
  9  * license below:
 10  *
 11  * Redistribution and use in source and binary forms, with or without
 12  * modification, are permitted provided that the following conditions
 13  * are met:
 14  *
 15  * 1. Redistributions of source code must retain the above copyright
 16  *    notice, this list of conditions and the following disclaimer.
 17  * 2. Redistributions in binary form must reproduce the above copyright
 18  *    notice, this list of conditions and the following disclaimer in
 19  *    the documentation and/or other materials provided with the
 20  *    distribution.
 21  *
 22  * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
 23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 24  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 25  * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
 26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 29  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 30  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 31  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
 32  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 33  */
 34 
 35 #include <linux/types.h>
 36 #include <linux/kernel.h>
 37 #include <linux/mm.h>
 38 #include <linux/delay.h>
 39 
 40 #include <asm/mipsregs.h>
 41 #include <asm/time.h>
 42 
 43 #include <asm/netlogic/common.h>
 44 #include <asm/netlogic/haldefs.h>
 45 #include <asm/netlogic/xlp-hal/iomap.h>
 46 #include <asm/netlogic/xlp-hal/xlp.h>
 47 #include <asm/netlogic/xlp-hal/pic.h>
 48 #include <asm/netlogic/xlp-hal/sys.h>
 49 
 50 /* Main initialization */
 51 void nlm_node_init(int node)
 52 {
 53         struct nlm_soc_info *nodep;
 54 
 55         nodep = nlm_get_node(node);
 56         nodep->sysbase = nlm_get_sys_regbase(node);
 57         nodep->picbase = nlm_get_pic_regbase(node);
 58         nodep->ebase = read_c0_ebase() & (~((1 << 12) - 1));
 59         spin_lock_init(&nodep->piclock);
 60 }
 61 
 62 int nlm_irq_to_irt(int irq)
 63 {
 64         uint64_t pcibase;
 65         int devoff, irt;
 66 
 67         switch (irq) {
 68         case PIC_UART_0_IRQ:
 69                 devoff = XLP_IO_UART0_OFFSET(0);
 70                 break;
 71         case PIC_UART_1_IRQ:
 72                 devoff = XLP_IO_UART1_OFFSET(0);
 73                 break;
 74         case PIC_EHCI_0_IRQ:
 75                 devoff = XLP_IO_USB_EHCI0_OFFSET(0);
 76                 break;
 77         case PIC_EHCI_1_IRQ:
 78                 devoff = XLP_IO_USB_EHCI1_OFFSET(0);
 79                 break;
 80         case PIC_OHCI_0_IRQ:
 81                 devoff = XLP_IO_USB_OHCI0_OFFSET(0);
 82                 break;
 83         case PIC_OHCI_1_IRQ:
 84                 devoff = XLP_IO_USB_OHCI1_OFFSET(0);
 85                 break;
 86         case PIC_OHCI_2_IRQ:
 87                 devoff = XLP_IO_USB_OHCI2_OFFSET(0);
 88                 break;
 89         case PIC_OHCI_3_IRQ:
 90                 devoff = XLP_IO_USB_OHCI3_OFFSET(0);
 91                 break;
 92         case PIC_MMC_IRQ:
 93                 devoff = XLP_IO_SD_OFFSET(0);
 94                 break;
 95         case PIC_I2C_0_IRQ:
 96                 devoff = XLP_IO_I2C0_OFFSET(0);
 97                 break;
 98         case PIC_I2C_1_IRQ:
 99                 devoff = XLP_IO_I2C1_OFFSET(0);
100                 break;
101         default:
102                 devoff = 0;
103                 break;
104         }
105 
106         if (devoff != 0) {
107                 pcibase = nlm_pcicfg_base(devoff);
108                 irt = nlm_read_reg(pcibase, XLP_PCI_IRTINFO_REG) & 0xffff;
109                 /* HW bug, I2C 1 irt entry is off by one */
110                 if (irq == PIC_I2C_1_IRQ)
111                         irt = irt + 1;
112         } else if (irq >= PIC_PCIE_LINK_0_IRQ && irq <= PIC_PCIE_LINK_3_IRQ) {
113                 /* HW bug, PCI IRT entries are bad on early silicon, fix */
114                 irt = PIC_IRT_PCIE_LINK_INDEX(irq - PIC_PCIE_LINK_0_IRQ);
115         } else {
116                 irt = -1;
117         }
118         return irt;
119 }
120 
121 unsigned int nlm_get_core_frequency(int node, int core)
122 {
123         unsigned int pll_divf, pll_divr, dfs_div, ext_div;
124         unsigned int rstval, dfsval, denom;
125         uint64_t num, sysbase;
126 
127         sysbase = nlm_get_node(node)->sysbase;
128         rstval = nlm_read_sys_reg(sysbase, SYS_POWER_ON_RESET_CFG);
129         dfsval = nlm_read_sys_reg(sysbase, SYS_CORE_DFS_DIV_VALUE);
130         pll_divf = ((rstval >> 10) & 0x7f) + 1;
131         pll_divr = ((rstval >> 8)  & 0x3) + 1;
132         ext_div  = ((rstval >> 30) & 0x3) + 1;
133         dfs_div  = ((dfsval >> (core * 4)) & 0xf) + 1;
134 
135         num = 800000000ULL * pll_divf;
136         denom = 3 * pll_divr * ext_div * dfs_div;
137         do_div(num, denom);
138         return (unsigned int)num;
139 }
140 
141 unsigned int nlm_get_cpu_frequency(void)
142 {
143         return nlm_get_core_frequency(0, 0);
144 }
145 

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