/* * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights * reserved. * * This software is available to you under a choice of one of two * licenses. You may choose to be licensed under the terms of the GNU * General Public License (GPL) Version 2, available from the file * COPYING in the main directory of this source tree, or the NetLogic * license below: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <linux/types.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/delay.h> #include <asm/mipsregs.h> #include <asm/time.h> #include <asm/netlogic/common.h> #include <asm/netlogic/haldefs.h> #include <asm/netlogic/xlp-hal/iomap.h> #include <asm/netlogic/xlp-hal/xlp.h> #include <asm/netlogic/xlp-hal/pic.h> #include <asm/netlogic/xlp-hal/sys.h> /* Main initialization */ void nlm_node_init(int node) { struct nlm_soc_info *nodep; nodep = nlm_get_node(node); nodep->sysbase = nlm_get_sys_regbase(node); nodep->picbase = nlm_get_pic_regbase(node); nodep->ebase = read_c0_ebase() & (~((1 << 12) - 1)); spin_lock_init(&nodep->piclock); } int nlm_irq_to_irt(int irq) { uint64_t pcibase; int devoff, irt; switch (irq) { case PIC_UART_0_IRQ: devoff = XLP_IO_UART0_OFFSET(0); break; case PIC_UART_1_IRQ: devoff = XLP_IO_UART1_OFFSET(0); break; case PIC_EHCI_0_IRQ: devoff = XLP_IO_USB_EHCI0_OFFSET(0); break; case PIC_EHCI_1_IRQ: devoff = XLP_IO_USB_EHCI1_OFFSET(0); break; case PIC_OHCI_0_IRQ: devoff = XLP_IO_USB_OHCI0_OFFSET(0); break; case PIC_OHCI_1_IRQ: devoff = XLP_IO_USB_OHCI1_OFFSET(0); break; case PIC_OHCI_2_IRQ: devoff = XLP_IO_USB_OHCI2_OFFSET(0); break; case PIC_OHCI_3_IRQ: devoff = XLP_IO_USB_OHCI3_OFFSET(0); break; case PIC_MMC_IRQ: devoff = XLP_IO_SD_OFFSET(0); break; case PIC_I2C_0_IRQ: devoff = XLP_IO_I2C0_OFFSET(0); break; case PIC_I2C_1_IRQ: devoff = XLP_IO_I2C1_OFFSET(0); break; default: devoff = 0; break; } if (devoff != 0) { pcibase = nlm_pcicfg_base(devoff); irt = nlm_read_reg(pcibase, XLP_PCI_IRTINFO_REG) & 0xffff; /* HW bug, I2C 1 irt entry is off by one */ if (irq == PIC_I2C_1_IRQ) irt = irt + 1; } else if (irq >= PIC_PCIE_LINK_0_IRQ && irq <= PIC_PCIE_LINK_3_IRQ) { /* HW bug, PCI IRT entries are bad on early silicon, fix */ irt = PIC_IRT_PCIE_LINK_INDEX(irq - PIC_PCIE_LINK_0_IRQ); } else { irt = -1; } return irt; } unsigned int nlm_get_core_frequency(int node, int core) { unsigned int pll_divf, pll_divr, dfs_div, ext_div; unsigned int rstval, dfsval, denom; uint64_t num, sysbase; sysbase = nlm_get_node(node)->sysbase; rstval = nlm_read_sys_reg(sysbase, SYS_POWER_ON_RESET_CFG); dfsval = nlm_read_sys_reg(sysbase, SYS_CORE_DFS_DIV_VALUE); pll_divf = ((rstval >> 10) & 0x7f) + 1; pll_divr = ((rstval >> 8) & 0x3) + 1; ext_div = ((rstval >> 30) & 0x3) + 1; dfs_div = ((dfsval >> (core * 4)) & 0xf) + 1; num = 800000000ULL * pll_divf; denom = 3 * pll_divr * ext_div * dfs_div; do_div(num, denom); return (unsigned int)num; } unsigned int nlm_get_cpu_frequency(void) { return nlm_get_core_frequency(0, 0); }