1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2010 Adrian Chadd
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include "opt_ddb.h"
33
34#include <sys/param.h>
35#include <sys/conf.h>
36#include <sys/kernel.h>
37#include <sys/systm.h>
38#include <sys/bus.h>
39#include <sys/cons.h>
40#include <sys/kdb.h>
41#include <sys/reboot.h>
42
43#include <vm/vm.h>
44#include <vm/vm_page.h>
45
46#include <net/ethernet.h>
47
48#include <machine/clock.h>
49#include <machine/cpu.h>
50#include <machine/cpuregs.h>
51#include <machine/hwfunc.h>
52#include <machine/md_var.h>
53#include <machine/trap.h>
54#include <machine/vmparam.h>
55
56#include <mips/atheros/ar71xxreg.h>
57#include <mips/atheros/ar71xx_cpudef.h>
58#include <mips/atheros/ar71xx_chip.h>
59#include <mips/atheros/ar91xxreg.h>
60#include <mips/atheros/ar91xx_chip.h>
61
62static void
63ar91xx_chip_detect_mem_size(void)
64{
65}
66
67static void
68ar91xx_chip_detect_sys_frequency(void)
69{
70	uint32_t pll;
71	uint32_t freq;
72	uint32_t div;
73
74	u_ar71xx_mdio_freq = u_ar71xx_refclk = AR91XX_BASE_FREQ;
75
76	pll = ATH_READ_REG(AR91XX_PLL_REG_CPU_CONFIG);
77
78	div = ((pll >> AR91XX_PLL_DIV_SHIFT) & AR91XX_PLL_DIV_MASK);
79	freq = div * AR91XX_BASE_FREQ;
80	u_ar71xx_cpu_freq = freq;
81
82	div = ((pll >> AR91XX_DDR_DIV_SHIFT) & AR91XX_DDR_DIV_MASK) + 1;
83	u_ar71xx_ddr_freq = freq / div;
84
85	div = (((pll >> AR91XX_AHB_DIV_SHIFT) & AR91XX_AHB_DIV_MASK) + 1) * 2;
86	u_ar71xx_ahb_freq = u_ar71xx_cpu_freq / div;
87	u_ar71xx_uart_freq = u_ar71xx_cpu_freq / div;
88	u_ar71xx_wdt_freq = u_ar71xx_cpu_freq / div;
89}
90
91static void
92ar91xx_chip_device_stop(uint32_t mask)
93{
94	uint32_t reg;
95
96	reg = ATH_READ_REG(AR91XX_RESET_REG_RESET_MODULE);
97	ATH_WRITE_REG(AR91XX_RESET_REG_RESET_MODULE, reg | mask);
98}
99
100static void
101ar91xx_chip_device_start(uint32_t mask)
102{
103	uint32_t reg;
104
105	reg = ATH_READ_REG(AR91XX_RESET_REG_RESET_MODULE);
106	ATH_WRITE_REG(AR91XX_RESET_REG_RESET_MODULE, reg & ~mask);
107}
108
109static int
110ar91xx_chip_device_stopped(uint32_t mask)
111{
112	uint32_t reg;
113
114	reg = ATH_READ_REG(AR91XX_RESET_REG_RESET_MODULE);
115	return ((reg & mask) == mask);
116}
117
118static void
119ar91xx_chip_set_pll_ge(int unit, int speed, uint32_t pll)
120{
121
122	switch (unit) {
123	case 0:
124		ar71xx_write_pll(AR91XX_PLL_REG_ETH_CONFIG,
125		    AR91XX_PLL_REG_ETH0_INT_CLOCK, pll,
126		    AR91XX_ETH0_PLL_SHIFT);
127		break;
128	case 1:
129		ar71xx_write_pll(AR91XX_PLL_REG_ETH_CONFIG,
130		    AR91XX_PLL_REG_ETH1_INT_CLOCK, pll,
131		    AR91XX_ETH1_PLL_SHIFT);
132		break;
133	default:
134		printf("%s: invalid PLL set for arge unit: %d\n",
135		    __func__, unit);
136		return;
137	}
138}
139
140static void
141ar91xx_chip_ddr_flush(ar71xx_flush_ddr_id_t id)
142{
143
144	switch (id) {
145	case AR71XX_CPU_DDR_FLUSH_GE0:
146		ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE0);
147		break;
148	case AR71XX_CPU_DDR_FLUSH_GE1:
149		ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_GE1);
150		break;
151	case AR71XX_CPU_DDR_FLUSH_USB:
152		ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_USB);
153		break;
154	case AR71XX_CPU_DDR_FLUSH_WMAC:
155		ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_WMAC);
156		break;
157	default:
158		printf("%s: invalid DDR flush id (%d)\n", __func__, id);
159		break;
160	}
161}
162
163static uint32_t
164ar91xx_chip_get_eth_pll(unsigned int mac, int speed)
165{
166	uint32_t pll;
167
168	switch(speed) {
169	case 10:
170		pll = AR91XX_PLL_VAL_10;
171		break;
172	case 100:
173		pll = AR91XX_PLL_VAL_100;
174		break;
175	case 1000:
176		pll = AR91XX_PLL_VAL_1000;
177		break;
178	default:
179		printf("%s%d: invalid speed %d\n", __func__, mac, speed);
180		pll = 0;
181	}
182
183	return (pll);
184}
185
186static void
187ar91xx_chip_init_usb_peripheral(void)
188{
189
190	ar71xx_device_stop(AR91XX_RST_RESET_MODULE_USBSUS_OVERRIDE);
191	DELAY(100);
192
193	ar71xx_device_start(RST_RESET_USB_HOST);
194	DELAY(100);
195
196	ar71xx_device_start(RST_RESET_USB_PHY);
197	DELAY(100);
198
199	/* Wireless */
200	ar71xx_device_stop(AR91XX_RST_RESET_MODULE_AMBA2WMAC);
201	DELAY(1000);
202
203	ar71xx_device_start(AR91XX_RST_RESET_MODULE_AMBA2WMAC);
204	DELAY(1000);
205}
206
207struct ar71xx_cpu_def ar91xx_chip_def = {
208	&ar91xx_chip_detect_mem_size,
209	&ar91xx_chip_detect_sys_frequency,
210	&ar91xx_chip_device_stop,
211	&ar91xx_chip_device_start,
212	&ar91xx_chip_device_stopped,
213	&ar91xx_chip_set_pll_ge,
214	&ar71xx_chip_set_mii_speed,
215	&ar71xx_chip_set_mii_if,
216	&ar91xx_chip_get_eth_pll,
217	&ar91xx_chip_ddr_flush,
218	&ar91xx_chip_init_usb_peripheral,
219};
220