[deliverable/linux.git] / arch / mips / netlogic / xlp / nlm_hal.c

/*
 * 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)
{
	if (!PIC_IRQ_IS_IRT(irq))
		return -1;

	switch (irq) {
	case PIC_UART_0_IRQ:
		return PIC_IRT_UART_0_INDEX;
	case PIC_UART_1_IRQ:
		return PIC_IRT_UART_1_INDEX;
	case PIC_PCIE_LINK_0_IRQ:
	       return PIC_IRT_PCIE_LINK_0_INDEX;
	case PIC_PCIE_LINK_1_IRQ:
	       return PIC_IRT_PCIE_LINK_1_INDEX;
	case PIC_PCIE_LINK_2_IRQ:
	       return PIC_IRT_PCIE_LINK_2_INDEX;
	case PIC_PCIE_LINK_3_IRQ:
	       return PIC_IRT_PCIE_LINK_3_INDEX;
	case PIC_EHCI_0_IRQ:
	       return PIC_IRT_EHCI_0_INDEX;
	case PIC_EHCI_1_IRQ:
	       return PIC_IRT_EHCI_1_INDEX;
	case PIC_OHCI_0_IRQ:
	       return PIC_IRT_OHCI_0_INDEX;
	case PIC_OHCI_1_IRQ:
	       return PIC_IRT_OHCI_1_INDEX;
	case PIC_OHCI_2_IRQ:
	       return PIC_IRT_OHCI_2_INDEX;
	case PIC_OHCI_3_IRQ:
	       return PIC_IRT_OHCI_3_INDEX;
	case PIC_MMC_IRQ:
	       return PIC_IRT_MMC_INDEX;
	case PIC_I2C_0_IRQ:
		return PIC_IRT_I2C_0_INDEX;
	case PIC_I2C_1_IRQ:
		return PIC_IRT_I2C_1_INDEX;
	default:
		return -1;
	}
}

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);
}
Commit	Line	Data
65040e22 J	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
77ae798f	43	#include <asm/netlogic/common.h>
65040e22 J	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
65040e22	50	/* Main initialization */
77ae798f	51	void nlm_node_init(int node)
65040e22	52	{
77ae798f J	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);
65040e22 J	60	}
	61
	62	int nlm_irq_to_irt(int irq)
	63	{
	64	if (!PIC_IRQ_IS_IRT(irq))
	65	return -1;
	66
	67	switch (irq) {
	68	case PIC_UART_0_IRQ:
	69	return PIC_IRT_UART_0_INDEX;
	70	case PIC_UART_1_IRQ:
	71	return PIC_IRT_UART_1_INDEX;
9bac624b GR	72	case PIC_PCIE_LINK_0_IRQ:
	73	return PIC_IRT_PCIE_LINK_0_INDEX;
	74	case PIC_PCIE_LINK_1_IRQ:
	75	return PIC_IRT_PCIE_LINK_1_INDEX;
	76	case PIC_PCIE_LINK_2_IRQ:
	77	return PIC_IRT_PCIE_LINK_2_INDEX;
	78	case PIC_PCIE_LINK_3_IRQ:
	79	return PIC_IRT_PCIE_LINK_3_INDEX;
1004165f GR	80	case PIC_EHCI_0_IRQ:
	81	return PIC_IRT_EHCI_0_INDEX;
	82	case PIC_EHCI_1_IRQ:
	83	return PIC_IRT_EHCI_1_INDEX;
	84	case PIC_OHCI_0_IRQ:
	85	return PIC_IRT_OHCI_0_INDEX;
	86	case PIC_OHCI_1_IRQ:
	87	return PIC_IRT_OHCI_1_INDEX;
	88	case PIC_OHCI_2_IRQ:
	89	return PIC_IRT_OHCI_2_INDEX;
	90	case PIC_OHCI_3_IRQ:
	91	return PIC_IRT_OHCI_3_INDEX;
57d7cdb6 J	92	case PIC_MMC_IRQ:
	93	return PIC_IRT_MMC_INDEX;
	94	case PIC_I2C_0_IRQ:
	95	return PIC_IRT_I2C_0_INDEX;
	96	case PIC_I2C_1_IRQ:
	97	return PIC_IRT_I2C_1_INDEX;
65040e22 J	98	default:
	99	return -1;
	100	}
	101	}
	102
77ae798f	103	unsigned int nlm_get_core_frequency(int node, int core)
65040e22	104	{
2aa54b20 J	105	unsigned int pll_divf, pll_divr, dfs_div, ext_div;
2aa54b20 J	106	unsigned int rstval, dfsval, denom;
77ae798f	107	uint64_t num, sysbase;
65040e22	108
77ae798f J	109	sysbase = nlm_get_node(node)->sysbase;
	110	rstval = nlm_read_sys_reg(sysbase, SYS_POWER_ON_RESET_CFG);
	111	dfsval = nlm_read_sys_reg(sysbase, SYS_CORE_DFS_DIV_VALUE);
2aa54b20 J	112	pll_divf = ((rstval >> 10) & 0x7f) + 1;
2aa54b20 J	113	pll_divr = ((rstval >> 8) & 0x3) + 1;
70342287 RB	114	ext_div = ((rstval >> 30) & 0x3) + 1;
70342287 RB	115	dfs_div = ((dfsval >> (core * 4)) & 0xf) + 1;
65040e22	116
2aa54b20 J	117	num = 800000000ULL * pll_divf;
2aa54b20 J	118	denom = 3 * pll_divr * ext_div * dfs_div;
65040e22 J	119	do_div(num, denom);
	120	return (unsigned int)num;
	121	}
2aa54b20 J	122
	123	unsigned int nlm_get_cpu_frequency(void)
	124	{
77ae798f	125	return nlm_get_core_frequency(0, 0);
2aa54b20	126	}