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authorRalf Baechle <ralf@linux-mips.org>2008-09-16 13:12:16 -0400
committerRalf Baechle <ralf@linux-mips.org>2008-10-11 11:18:50 -0400
commite8c7c482347574ecdd45c43e32c332d5fc2ece61 (patch)
treec741aa6cdb4e897df9f9476d83a816a7a2b058dd /arch/mips/alchemy/common
parent8d2d91e86b4153cc2305ec86fe908048f459ff7f (diff)
MIPS: Alchemy: rename directory
It's more than the au1000 these days. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/alchemy/common')
-rw-r--r--arch/mips/alchemy/common/Makefile14
-rw-r--r--arch/mips/alchemy/common/au1xxx_irqmap.c205
-rw-r--r--arch/mips/alchemy/common/clocks.c93
-rw-r--r--arch/mips/alchemy/common/cputable.c52
-rw-r--r--arch/mips/alchemy/common/dbdma.c978
-rw-r--r--arch/mips/alchemy/common/dma.c238
-rw-r--r--arch/mips/alchemy/common/gpio.c148
-rw-r--r--arch/mips/alchemy/common/irq.c596
-rw-r--r--arch/mips/alchemy/common/pci.c104
-rw-r--r--arch/mips/alchemy/common/platform.c319
-rw-r--r--arch/mips/alchemy/common/power.c465
-rw-r--r--arch/mips/alchemy/common/prom.c146
-rw-r--r--arch/mips/alchemy/common/puts.c68
-rw-r--r--arch/mips/alchemy/common/reset.c189
-rw-r--r--arch/mips/alchemy/common/setup.c160
-rw-r--r--arch/mips/alchemy/common/sleeper.S154
-rw-r--r--arch/mips/alchemy/common/time.c266
17 files changed, 4195 insertions, 0 deletions
diff --git a/arch/mips/alchemy/common/Makefile b/arch/mips/alchemy/common/Makefile
new file mode 100644
index 000000000000..df48fd65bbf3
--- /dev/null
+++ b/arch/mips/alchemy/common/Makefile
@@ -0,0 +1,14 @@
1#
2# Copyright 2000, 2008 MontaVista Software Inc.
3# Author: MontaVista Software, Inc. <source@mvista.com>
4#
5# Makefile for the Alchemy Au1xx0 CPUs, generic files.
6#
7
8obj-y += prom.o irq.o puts.o time.o reset.o \
9 au1xxx_irqmap.o clocks.o platform.o power.o setup.o \
10 sleeper.o cputable.o dma.o dbdma.o gpio.o
11
12obj-$(CONFIG_PCI) += pci.o
13
14EXTRA_CFLAGS += -Werror
diff --git a/arch/mips/alchemy/common/au1xxx_irqmap.c b/arch/mips/alchemy/common/au1xxx_irqmap.c
new file mode 100644
index 000000000000..c7ca1596394c
--- /dev/null
+++ b/arch/mips/alchemy/common/au1xxx_irqmap.c
@@ -0,0 +1,205 @@
1/*
2 * BRIEF MODULE DESCRIPTION
3 * Au1xxx processor specific IRQ tables
4 *
5 * Copyright 2004 Embedded Edge, LLC
6 * dan@embeddededge.com
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28#include <linux/init.h>
29#include <linux/kernel.h>
30
31#include <au1000.h>
32
33/* The IC0 interrupt table. This is processor, rather than
34 * board dependent, so no reason to keep this info in the board
35 * dependent files.
36 *
37 * Careful if you change match 2 request!
38 * The interrupt handler is called directly from the low level dispatch code.
39 */
40struct au1xxx_irqmap __initdata au1xxx_ic0_map[] = {
41
42#if defined(CONFIG_SOC_AU1000)
43 { AU1000_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
44 { AU1000_UART1_INT, INTC_INT_HIGH_LEVEL, 0 },
45 { AU1000_UART2_INT, INTC_INT_HIGH_LEVEL, 0 },
46 { AU1000_UART3_INT, INTC_INT_HIGH_LEVEL, 0 },
47 { AU1000_SSI0_INT, INTC_INT_HIGH_LEVEL, 0 },
48 { AU1000_SSI1_INT, INTC_INT_HIGH_LEVEL, 0 },
49 { AU1000_DMA_INT_BASE, INTC_INT_HIGH_LEVEL, 0 },
50 { AU1000_DMA_INT_BASE+1, INTC_INT_HIGH_LEVEL, 0 },
51 { AU1000_DMA_INT_BASE+2, INTC_INT_HIGH_LEVEL, 0 },
52 { AU1000_DMA_INT_BASE+3, INTC_INT_HIGH_LEVEL, 0 },
53 { AU1000_DMA_INT_BASE+4, INTC_INT_HIGH_LEVEL, 0 },
54 { AU1000_DMA_INT_BASE+5, INTC_INT_HIGH_LEVEL, 0 },
55 { AU1000_DMA_INT_BASE+6, INTC_INT_HIGH_LEVEL, 0 },
56 { AU1000_DMA_INT_BASE+7, INTC_INT_HIGH_LEVEL, 0 },
57 { AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
58 { AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
59 { AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
60 { AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
61 { AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
62 { AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
63 { AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
64 { AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
65 { AU1000_IRDA_TX_INT, INTC_INT_HIGH_LEVEL, 0 },
66 { AU1000_IRDA_RX_INT, INTC_INT_HIGH_LEVEL, 0 },
67 { AU1000_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
68 { AU1000_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
69 { AU1000_USB_HOST_INT, INTC_INT_LOW_LEVEL, 0 },
70 { AU1000_ACSYNC_INT, INTC_INT_RISE_EDGE, 0 },
71 { AU1000_MAC0_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
72 { AU1000_MAC1_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
73 { AU1000_AC97C_INT, INTC_INT_RISE_EDGE, 0 },
74
75#elif defined(CONFIG_SOC_AU1500)
76
77 { AU1500_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
78 { AU1000_PCI_INTA, INTC_INT_LOW_LEVEL, 0 },
79 { AU1000_PCI_INTB, INTC_INT_LOW_LEVEL, 0 },
80 { AU1500_UART3_INT, INTC_INT_HIGH_LEVEL, 0 },
81 { AU1000_PCI_INTC, INTC_INT_LOW_LEVEL, 0 },
82 { AU1000_PCI_INTD, INTC_INT_LOW_LEVEL, 0 },
83 { AU1000_DMA_INT_BASE, INTC_INT_HIGH_LEVEL, 0 },
84 { AU1000_DMA_INT_BASE+1, INTC_INT_HIGH_LEVEL, 0 },
85 { AU1000_DMA_INT_BASE+2, INTC_INT_HIGH_LEVEL, 0 },
86 { AU1000_DMA_INT_BASE+3, INTC_INT_HIGH_LEVEL, 0 },
87 { AU1000_DMA_INT_BASE+4, INTC_INT_HIGH_LEVEL, 0 },
88 { AU1000_DMA_INT_BASE+5, INTC_INT_HIGH_LEVEL, 0 },
89 { AU1000_DMA_INT_BASE+6, INTC_INT_HIGH_LEVEL, 0 },
90 { AU1000_DMA_INT_BASE+7, INTC_INT_HIGH_LEVEL, 0 },
91 { AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
92 { AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
93 { AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
94 { AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
95 { AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
96 { AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
97 { AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
98 { AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
99 { AU1000_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
100 { AU1000_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
101 { AU1000_USB_HOST_INT, INTC_INT_LOW_LEVEL, 0 },
102 { AU1000_ACSYNC_INT, INTC_INT_RISE_EDGE, 0 },
103 { AU1500_MAC0_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
104 { AU1500_MAC1_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
105 { AU1000_AC97C_INT, INTC_INT_RISE_EDGE, 0 },
106
107#elif defined(CONFIG_SOC_AU1100)
108
109 { AU1100_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
110 { AU1100_UART1_INT, INTC_INT_HIGH_LEVEL, 0 },
111 { AU1100_SD_INT, INTC_INT_HIGH_LEVEL, 0 },
112 { AU1100_UART3_INT, INTC_INT_HIGH_LEVEL, 0 },
113 { AU1000_SSI0_INT, INTC_INT_HIGH_LEVEL, 0 },
114 { AU1000_SSI1_INT, INTC_INT_HIGH_LEVEL, 0 },
115 { AU1000_DMA_INT_BASE, INTC_INT_HIGH_LEVEL, 0 },
116 { AU1000_DMA_INT_BASE+1, INTC_INT_HIGH_LEVEL, 0 },
117 { AU1000_DMA_INT_BASE+2, INTC_INT_HIGH_LEVEL, 0 },
118 { AU1000_DMA_INT_BASE+3, INTC_INT_HIGH_LEVEL, 0 },
119 { AU1000_DMA_INT_BASE+4, INTC_INT_HIGH_LEVEL, 0 },
120 { AU1000_DMA_INT_BASE+5, INTC_INT_HIGH_LEVEL, 0 },
121 { AU1000_DMA_INT_BASE+6, INTC_INT_HIGH_LEVEL, 0 },
122 { AU1000_DMA_INT_BASE+7, INTC_INT_HIGH_LEVEL, 0 },
123 { AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
124 { AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
125 { AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
126 { AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
127 { AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
128 { AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
129 { AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
130 { AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
131 { AU1000_IRDA_TX_INT, INTC_INT_HIGH_LEVEL, 0 },
132 { AU1000_IRDA_RX_INT, INTC_INT_HIGH_LEVEL, 0 },
133 { AU1000_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
134 { AU1000_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
135 { AU1000_USB_HOST_INT, INTC_INT_LOW_LEVEL, 0 },
136 { AU1000_ACSYNC_INT, INTC_INT_RISE_EDGE, 0 },
137 { AU1100_MAC0_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
138 /* { AU1000_GPIO215_208_INT, INTC_INT_HIGH_LEVEL, 0 }, */
139 { AU1100_LCD_INT, INTC_INT_HIGH_LEVEL, 0 },
140 { AU1000_AC97C_INT, INTC_INT_RISE_EDGE, 0 },
141
142#elif defined(CONFIG_SOC_AU1550)
143
144 { AU1550_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
145 { AU1550_PCI_INTA, INTC_INT_LOW_LEVEL, 0 },
146 { AU1550_PCI_INTB, INTC_INT_LOW_LEVEL, 0 },
147 { AU1550_DDMA_INT, INTC_INT_HIGH_LEVEL, 0 },
148 { AU1550_CRYPTO_INT, INTC_INT_HIGH_LEVEL, 0 },
149 { AU1550_PCI_INTC, INTC_INT_LOW_LEVEL, 0 },
150 { AU1550_PCI_INTD, INTC_INT_LOW_LEVEL, 0 },
151 { AU1550_PCI_RST_INT, INTC_INT_LOW_LEVEL, 0 },
152 { AU1550_UART1_INT, INTC_INT_HIGH_LEVEL, 0 },
153 { AU1550_UART3_INT, INTC_INT_HIGH_LEVEL, 0 },
154 { AU1550_PSC0_INT, INTC_INT_HIGH_LEVEL, 0 },
155 { AU1550_PSC1_INT, INTC_INT_HIGH_LEVEL, 0 },
156 { AU1550_PSC2_INT, INTC_INT_HIGH_LEVEL, 0 },
157 { AU1550_PSC3_INT, INTC_INT_HIGH_LEVEL, 0 },
158 { AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
159 { AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
160 { AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
161 { AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
162 { AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
163 { AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
164 { AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
165 { AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
166 { AU1550_NAND_INT, INTC_INT_RISE_EDGE, 0 },
167 { AU1550_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
168 { AU1550_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
169 { AU1550_USB_HOST_INT, INTC_INT_LOW_LEVEL, 0 },
170 { AU1550_MAC0_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
171 { AU1550_MAC1_DMA_INT, INTC_INT_HIGH_LEVEL, 0 },
172
173#elif defined(CONFIG_SOC_AU1200)
174
175 { AU1200_UART0_INT, INTC_INT_HIGH_LEVEL, 0 },
176 { AU1200_SWT_INT, INTC_INT_RISE_EDGE, 0 },
177 { AU1200_SD_INT, INTC_INT_HIGH_LEVEL, 0 },
178 { AU1200_DDMA_INT, INTC_INT_HIGH_LEVEL, 0 },
179 { AU1200_MAE_BE_INT, INTC_INT_HIGH_LEVEL, 0 },
180 { AU1200_UART1_INT, INTC_INT_HIGH_LEVEL, 0 },
181 { AU1200_MAE_FE_INT, INTC_INT_HIGH_LEVEL, 0 },
182 { AU1200_PSC0_INT, INTC_INT_HIGH_LEVEL, 0 },
183 { AU1200_PSC1_INT, INTC_INT_HIGH_LEVEL, 0 },
184 { AU1200_AES_INT, INTC_INT_HIGH_LEVEL, 0 },
185 { AU1200_CAMERA_INT, INTC_INT_HIGH_LEVEL, 0 },
186 { AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
187 { AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
188 { AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
189 { AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
190 { AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
191 { AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
192 { AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
193 { AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
194 { AU1200_NAND_INT, INTC_INT_RISE_EDGE, 0 },
195 { AU1200_USB_INT, INTC_INT_HIGH_LEVEL, 0 },
196 { AU1200_LCD_INT, INTC_INT_HIGH_LEVEL, 0 },
197 { AU1200_MAE_BOTH_INT, INTC_INT_HIGH_LEVEL, 0 },
198
199#else
200#error "Error: Unknown Alchemy SOC"
201#endif
202
203};
204
205int __initdata au1xxx_ic0_nr_irqs = ARRAY_SIZE(au1xxx_ic0_map);
diff --git a/arch/mips/alchemy/common/clocks.c b/arch/mips/alchemy/common/clocks.c
new file mode 100644
index 000000000000..043429d17c5f
--- /dev/null
+++ b/arch/mips/alchemy/common/clocks.c
@@ -0,0 +1,93 @@
1/*
2 * BRIEF MODULE DESCRIPTION
3 * Simple Au1xx0 clocks routines.
4 *
5 * Copyright 2001, 2008 MontaVista Software Inc.
6 * Author: MontaVista Software, Inc. <source@mvista.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28
29#include <linux/module.h>
30#include <asm/mach-au1x00/au1000.h>
31
32static unsigned int au1x00_clock; /* Hz */
33static unsigned int lcd_clock; /* KHz */
34static unsigned long uart_baud_base;
35
36/*
37 * Set the au1000_clock
38 */
39void set_au1x00_speed(unsigned int new_freq)
40{
41 au1x00_clock = new_freq;
42}
43
44unsigned int get_au1x00_speed(void)
45{
46 return au1x00_clock;
47}
48EXPORT_SYMBOL(get_au1x00_speed);
49
50/*
51 * The UART baud base is not known at compile time ... if
52 * we want to be able to use the same code on different
53 * speed CPUs.
54 */
55unsigned long get_au1x00_uart_baud_base(void)
56{
57 return uart_baud_base;
58}
59
60void set_au1x00_uart_baud_base(unsigned long new_baud_base)
61{
62 uart_baud_base = new_baud_base;
63}
64
65/*
66 * Calculate the Au1x00's LCD clock based on the current
67 * cpu clock and the system bus clock, and try to keep it
68 * below 40 MHz (the Pb1000 board can lock-up if the LCD
69 * clock is over 40 MHz).
70 */
71void set_au1x00_lcd_clock(void)
72{
73 unsigned int static_cfg0;
74 unsigned int sys_busclk = (get_au1x00_speed() / 1000) /
75 ((int)(au_readl(SYS_POWERCTRL) & 0x03) + 2);
76
77 static_cfg0 = au_readl(MEM_STCFG0);
78
79 if (static_cfg0 & (1 << 11))
80 lcd_clock = sys_busclk / 5; /* note: BCLK switching fails with D5 */
81 else
82 lcd_clock = sys_busclk / 4;
83
84 if (lcd_clock > 50000) /* Epson MAX */
85 printk(KERN_WARNING "warning: LCD clock too high (%u KHz)\n",
86 lcd_clock);
87}
88
89unsigned int get_au1x00_lcd_clock(void)
90{
91 return lcd_clock;
92}
93EXPORT_SYMBOL(get_au1x00_lcd_clock);
diff --git a/arch/mips/alchemy/common/cputable.c b/arch/mips/alchemy/common/cputable.c
new file mode 100644
index 000000000000..ba6430bc2d03
--- /dev/null
+++ b/arch/mips/alchemy/common/cputable.c
@@ -0,0 +1,52 @@
1/*
2 * arch/mips/au1000/common/cputable.c
3 *
4 * Copyright (C) 2004 Dan Malek (dan@embeddededge.com)
5 * Copied from PowerPC and updated for Alchemy Au1xxx processors.
6 *
7 * Copyright (C) 2001 Ben. Herrenschmidt (benh@kernel.crashing.org)
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * as published by the Free Software Foundation; either version
12 * 2 of the License, or (at your option) any later version.
13 */
14
15#include <asm/mach-au1x00/au1000.h>
16
17struct cpu_spec *cur_cpu_spec[NR_CPUS];
18
19/* With some thought, we can probably use the mask to reduce the
20 * size of the table.
21 */
22struct cpu_spec cpu_specs[] = {
23 { 0xffffffff, 0x00030100, "Au1000 DA", 1, 0, 1 },
24 { 0xffffffff, 0x00030201, "Au1000 HA", 1, 0, 1 },
25 { 0xffffffff, 0x00030202, "Au1000 HB", 1, 0, 1 },
26 { 0xffffffff, 0x00030203, "Au1000 HC", 1, 1, 0 },
27 { 0xffffffff, 0x00030204, "Au1000 HD", 1, 1, 0 },
28 { 0xffffffff, 0x01030200, "Au1500 AB", 1, 1, 0 },
29 { 0xffffffff, 0x01030201, "Au1500 AC", 0, 1, 0 },
30 { 0xffffffff, 0x01030202, "Au1500 AD", 0, 1, 0 },
31 { 0xffffffff, 0x02030200, "Au1100 AB", 1, 1, 0 },
32 { 0xffffffff, 0x02030201, "Au1100 BA", 1, 1, 0 },
33 { 0xffffffff, 0x02030202, "Au1100 BC", 1, 1, 0 },
34 { 0xffffffff, 0x02030203, "Au1100 BD", 0, 1, 0 },
35 { 0xffffffff, 0x02030204, "Au1100 BE", 0, 1, 0 },
36 { 0xffffffff, 0x03030200, "Au1550 AA", 0, 1, 0 },
37 { 0xffffffff, 0x04030200, "Au1200 AB", 0, 0, 0 },
38 { 0xffffffff, 0x04030201, "Au1200 AC", 1, 0, 0 },
39 { 0x00000000, 0x00000000, "Unknown Au1xxx", 1, 0, 0 }
40};
41
42void set_cpuspec(void)
43{
44 struct cpu_spec *sp;
45 u32 prid;
46
47 prid = read_c0_prid();
48 sp = cpu_specs;
49 while ((prid & sp->prid_mask) != sp->prid_value)
50 sp++;
51 cur_cpu_spec[0] = sp;
52}
diff --git a/arch/mips/alchemy/common/dbdma.c b/arch/mips/alchemy/common/dbdma.c
new file mode 100644
index 000000000000..601ee9180ee4
--- /dev/null
+++ b/arch/mips/alchemy/common/dbdma.c
@@ -0,0 +1,978 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * The Descriptor Based DMA channel manager that first appeared
5 * on the Au1550. I started with dma.c, but I think all that is
6 * left is this initial comment :-)
7 *
8 * Copyright 2004 Embedded Edge, LLC
9 * dan@embeddededge.com
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 *
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
19 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
22 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
23 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * You should have received a copy of the GNU General Public License along
28 * with this program; if not, write to the Free Software Foundation, Inc.,
29 * 675 Mass Ave, Cambridge, MA 02139, USA.
30 *
31 */
32
33#include <linux/kernel.h>
34#include <linux/slab.h>
35#include <linux/spinlock.h>
36#include <linux/interrupt.h>
37#include <linux/module.h>
38#include <asm/mach-au1x00/au1000.h>
39#include <asm/mach-au1x00/au1xxx_dbdma.h>
40
41#if defined(CONFIG_SOC_AU1550) || defined(CONFIG_SOC_AU1200)
42
43/*
44 * The Descriptor Based DMA supports up to 16 channels.
45 *
46 * There are 32 devices defined. We keep an internal structure
47 * of devices using these channels, along with additional
48 * information.
49 *
50 * We allocate the descriptors and allow access to them through various
51 * functions. The drivers allocate the data buffers and assign them
52 * to the descriptors.
53 */
54static DEFINE_SPINLOCK(au1xxx_dbdma_spin_lock);
55
56/* I couldn't find a macro that did this... */
57#define ALIGN_ADDR(x, a) ((((u32)(x)) + (a-1)) & ~(a-1))
58
59static dbdma_global_t *dbdma_gptr = (dbdma_global_t *)DDMA_GLOBAL_BASE;
60static int dbdma_initialized;
61static void au1xxx_dbdma_init(void);
62
63static dbdev_tab_t dbdev_tab[] = {
64#ifdef CONFIG_SOC_AU1550
65 /* UARTS */
66 { DSCR_CMD0_UART0_TX, DEV_FLAGS_OUT, 0, 8, 0x11100004, 0, 0 },
67 { DSCR_CMD0_UART0_RX, DEV_FLAGS_IN, 0, 8, 0x11100000, 0, 0 },
68 { DSCR_CMD0_UART3_TX, DEV_FLAGS_OUT, 0, 8, 0x11400004, 0, 0 },
69 { DSCR_CMD0_UART3_RX, DEV_FLAGS_IN, 0, 8, 0x11400000, 0, 0 },
70
71 /* EXT DMA */
72 { DSCR_CMD0_DMA_REQ0, 0, 0, 0, 0x00000000, 0, 0 },
73 { DSCR_CMD0_DMA_REQ1, 0, 0, 0, 0x00000000, 0, 0 },
74 { DSCR_CMD0_DMA_REQ2, 0, 0, 0, 0x00000000, 0, 0 },
75 { DSCR_CMD0_DMA_REQ3, 0, 0, 0, 0x00000000, 0, 0 },
76
77 /* USB DEV */
78 { DSCR_CMD0_USBDEV_RX0, DEV_FLAGS_IN, 4, 8, 0x10200000, 0, 0 },
79 { DSCR_CMD0_USBDEV_TX0, DEV_FLAGS_OUT, 4, 8, 0x10200004, 0, 0 },
80 { DSCR_CMD0_USBDEV_TX1, DEV_FLAGS_OUT, 4, 8, 0x10200008, 0, 0 },
81 { DSCR_CMD0_USBDEV_TX2, DEV_FLAGS_OUT, 4, 8, 0x1020000c, 0, 0 },
82 { DSCR_CMD0_USBDEV_RX3, DEV_FLAGS_IN, 4, 8, 0x10200010, 0, 0 },
83 { DSCR_CMD0_USBDEV_RX4, DEV_FLAGS_IN, 4, 8, 0x10200014, 0, 0 },
84
85 /* PSC 0 */
86 { DSCR_CMD0_PSC0_TX, DEV_FLAGS_OUT, 0, 0, 0x11a0001c, 0, 0 },
87 { DSCR_CMD0_PSC0_RX, DEV_FLAGS_IN, 0, 0, 0x11a0001c, 0, 0 },
88
89 /* PSC 1 */
90 { DSCR_CMD0_PSC1_TX, DEV_FLAGS_OUT, 0, 0, 0x11b0001c, 0, 0 },
91 { DSCR_CMD0_PSC1_RX, DEV_FLAGS_IN, 0, 0, 0x11b0001c, 0, 0 },
92
93 /* PSC 2 */
94 { DSCR_CMD0_PSC2_TX, DEV_FLAGS_OUT, 0, 0, 0x10a0001c, 0, 0 },
95 { DSCR_CMD0_PSC2_RX, DEV_FLAGS_IN, 0, 0, 0x10a0001c, 0, 0 },
96
97 /* PSC 3 */
98 { DSCR_CMD0_PSC3_TX, DEV_FLAGS_OUT, 0, 0, 0x10b0001c, 0, 0 },
99 { DSCR_CMD0_PSC3_RX, DEV_FLAGS_IN, 0, 0, 0x10b0001c, 0, 0 },
100
101 { DSCR_CMD0_PCI_WRITE, 0, 0, 0, 0x00000000, 0, 0 }, /* PCI */
102 { DSCR_CMD0_NAND_FLASH, 0, 0, 0, 0x00000000, 0, 0 }, /* NAND */
103
104 /* MAC 0 */
105 { DSCR_CMD0_MAC0_RX, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
106 { DSCR_CMD0_MAC0_TX, DEV_FLAGS_OUT, 0, 0, 0x00000000, 0, 0 },
107
108 /* MAC 1 */
109 { DSCR_CMD0_MAC1_RX, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
110 { DSCR_CMD0_MAC1_TX, DEV_FLAGS_OUT, 0, 0, 0x00000000, 0, 0 },
111
112#endif /* CONFIG_SOC_AU1550 */
113
114#ifdef CONFIG_SOC_AU1200
115 { DSCR_CMD0_UART0_TX, DEV_FLAGS_OUT, 0, 8, 0x11100004, 0, 0 },
116 { DSCR_CMD0_UART0_RX, DEV_FLAGS_IN, 0, 8, 0x11100000, 0, 0 },
117 { DSCR_CMD0_UART1_TX, DEV_FLAGS_OUT, 0, 8, 0x11200004, 0, 0 },
118 { DSCR_CMD0_UART1_RX, DEV_FLAGS_IN, 0, 8, 0x11200000, 0, 0 },
119
120 { DSCR_CMD0_DMA_REQ0, 0, 0, 0, 0x00000000, 0, 0 },
121 { DSCR_CMD0_DMA_REQ1, 0, 0, 0, 0x00000000, 0, 0 },
122
123 { DSCR_CMD0_MAE_BE, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
124 { DSCR_CMD0_MAE_FE, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
125 { DSCR_CMD0_MAE_BOTH, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
126 { DSCR_CMD0_LCD, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
127
128 { DSCR_CMD0_SDMS_TX0, DEV_FLAGS_OUT, 4, 8, 0x10600000, 0, 0 },
129 { DSCR_CMD0_SDMS_RX0, DEV_FLAGS_IN, 4, 8, 0x10600004, 0, 0 },
130 { DSCR_CMD0_SDMS_TX1, DEV_FLAGS_OUT, 4, 8, 0x10680000, 0, 0 },
131 { DSCR_CMD0_SDMS_RX1, DEV_FLAGS_IN, 4, 8, 0x10680004, 0, 0 },
132
133 { DSCR_CMD0_AES_RX, DEV_FLAGS_IN , 4, 32, 0x10300008, 0, 0 },
134 { DSCR_CMD0_AES_TX, DEV_FLAGS_OUT, 4, 32, 0x10300004, 0, 0 },
135
136 { DSCR_CMD0_PSC0_TX, DEV_FLAGS_OUT, 0, 16, 0x11a0001c, 0, 0 },
137 { DSCR_CMD0_PSC0_RX, DEV_FLAGS_IN, 0, 16, 0x11a0001c, 0, 0 },
138 { DSCR_CMD0_PSC0_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
139
140 { DSCR_CMD0_PSC1_TX, DEV_FLAGS_OUT, 0, 16, 0x11b0001c, 0, 0 },
141 { DSCR_CMD0_PSC1_RX, DEV_FLAGS_IN, 0, 16, 0x11b0001c, 0, 0 },
142 { DSCR_CMD0_PSC1_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
143
144 { DSCR_CMD0_CIM_RXA, DEV_FLAGS_IN, 0, 32, 0x14004020, 0, 0 },
145 { DSCR_CMD0_CIM_RXB, DEV_FLAGS_IN, 0, 32, 0x14004040, 0, 0 },
146 { DSCR_CMD0_CIM_RXC, DEV_FLAGS_IN, 0, 32, 0x14004060, 0, 0 },
147 { DSCR_CMD0_CIM_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
148
149 { DSCR_CMD0_NAND_FLASH, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
150
151#endif /* CONFIG_SOC_AU1200 */
152
153 { DSCR_CMD0_THROTTLE, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
154 { DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
155
156 /* Provide 16 user definable device types */
157 { ~0, 0, 0, 0, 0, 0, 0 },
158 { ~0, 0, 0, 0, 0, 0, 0 },
159 { ~0, 0, 0, 0, 0, 0, 0 },
160 { ~0, 0, 0, 0, 0, 0, 0 },
161 { ~0, 0, 0, 0, 0, 0, 0 },
162 { ~0, 0, 0, 0, 0, 0, 0 },
163 { ~0, 0, 0, 0, 0, 0, 0 },
164 { ~0, 0, 0, 0, 0, 0, 0 },
165 { ~0, 0, 0, 0, 0, 0, 0 },
166 { ~0, 0, 0, 0, 0, 0, 0 },
167 { ~0, 0, 0, 0, 0, 0, 0 },
168 { ~0, 0, 0, 0, 0, 0, 0 },
169 { ~0, 0, 0, 0, 0, 0, 0 },
170 { ~0, 0, 0, 0, 0, 0, 0 },
171 { ~0, 0, 0, 0, 0, 0, 0 },
172 { ~0, 0, 0, 0, 0, 0, 0 },
173};
174
175#define DBDEV_TAB_SIZE ARRAY_SIZE(dbdev_tab)
176
177static chan_tab_t *chan_tab_ptr[NUM_DBDMA_CHANS];
178
179static dbdev_tab_t *find_dbdev_id(u32 id)
180{
181 int i;
182 dbdev_tab_t *p;
183 for (i = 0; i < DBDEV_TAB_SIZE; ++i) {
184 p = &dbdev_tab[i];
185 if (p->dev_id == id)
186 return p;
187 }
188 return NULL;
189}
190
191void *au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp)
192{
193 return phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
194}
195EXPORT_SYMBOL(au1xxx_ddma_get_nextptr_virt);
196
197u32 au1xxx_ddma_add_device(dbdev_tab_t *dev)
198{
199 u32 ret = 0;
200 dbdev_tab_t *p;
201 static u16 new_id = 0x1000;
202
203 p = find_dbdev_id(~0);
204 if (NULL != p) {
205 memcpy(p, dev, sizeof(dbdev_tab_t));
206 p->dev_id = DSCR_DEV2CUSTOM_ID(new_id, dev->dev_id);
207 ret = p->dev_id;
208 new_id++;
209#if 0
210 printk(KERN_DEBUG "add_device: id:%x flags:%x padd:%x\n",
211 p->dev_id, p->dev_flags, p->dev_physaddr);
212#endif
213 }
214
215 return ret;
216}
217EXPORT_SYMBOL(au1xxx_ddma_add_device);
218
219void au1xxx_ddma_del_device(u32 devid)
220{
221 dbdev_tab_t *p = find_dbdev_id(devid);
222
223 if (p != NULL) {
224 memset(p, 0, sizeof(dbdev_tab_t));
225 p->dev_id = ~0;
226 }
227}
228EXPORT_SYMBOL(au1xxx_ddma_del_device);
229
230/* Allocate a channel and return a non-zero descriptor if successful. */
231u32 au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
232 void (*callback)(int, void *), void *callparam)
233{
234 unsigned long flags;
235 u32 used, chan, rv;
236 u32 dcp;
237 int i;
238 dbdev_tab_t *stp, *dtp;
239 chan_tab_t *ctp;
240 au1x_dma_chan_t *cp;
241
242 /*
243 * We do the intialization on the first channel allocation.
244 * We have to wait because of the interrupt handler initialization
245 * which can't be done successfully during board set up.
246 */
247 if (!dbdma_initialized)
248 au1xxx_dbdma_init();
249 dbdma_initialized = 1;
250
251 stp = find_dbdev_id(srcid);
252 if (stp == NULL)
253 return 0;
254 dtp = find_dbdev_id(destid);
255 if (dtp == NULL)
256 return 0;
257
258 used = 0;
259 rv = 0;
260
261 /* Check to see if we can get both channels. */
262 spin_lock_irqsave(&au1xxx_dbdma_spin_lock, flags);
263 if (!(stp->dev_flags & DEV_FLAGS_INUSE) ||
264 (stp->dev_flags & DEV_FLAGS_ANYUSE)) {
265 /* Got source */
266 stp->dev_flags |= DEV_FLAGS_INUSE;
267 if (!(dtp->dev_flags & DEV_FLAGS_INUSE) ||
268 (dtp->dev_flags & DEV_FLAGS_ANYUSE)) {
269 /* Got destination */
270 dtp->dev_flags |= DEV_FLAGS_INUSE;
271 } else {
272 /* Can't get dest. Release src. */
273 stp->dev_flags &= ~DEV_FLAGS_INUSE;
274 used++;
275 }
276 } else
277 used++;
278 spin_unlock_irqrestore(&au1xxx_dbdma_spin_lock, flags);
279
280 if (!used) {
281 /* Let's see if we can allocate a channel for it. */
282 ctp = NULL;
283 chan = 0;
284 spin_lock_irqsave(&au1xxx_dbdma_spin_lock, flags);
285 for (i = 0; i < NUM_DBDMA_CHANS; i++)
286 if (chan_tab_ptr[i] == NULL) {
287 /*
288 * If kmalloc fails, it is caught below same
289 * as a channel not available.
290 */
291 ctp = kmalloc(sizeof(chan_tab_t), GFP_ATOMIC);
292 chan_tab_ptr[i] = ctp;
293 break;
294 }
295 spin_unlock_irqrestore(&au1xxx_dbdma_spin_lock, flags);
296
297 if (ctp != NULL) {
298 memset(ctp, 0, sizeof(chan_tab_t));
299 ctp->chan_index = chan = i;
300 dcp = DDMA_CHANNEL_BASE;
301 dcp += (0x0100 * chan);
302 ctp->chan_ptr = (au1x_dma_chan_t *)dcp;
303 cp = (au1x_dma_chan_t *)dcp;
304 ctp->chan_src = stp;
305 ctp->chan_dest = dtp;
306 ctp->chan_callback = callback;
307 ctp->chan_callparam = callparam;
308
309 /* Initialize channel configuration. */
310 i = 0;
311 if (stp->dev_intlevel)
312 i |= DDMA_CFG_SED;
313 if (stp->dev_intpolarity)
314 i |= DDMA_CFG_SP;
315 if (dtp->dev_intlevel)
316 i |= DDMA_CFG_DED;
317 if (dtp->dev_intpolarity)
318 i |= DDMA_CFG_DP;
319 if ((stp->dev_flags & DEV_FLAGS_SYNC) ||
320 (dtp->dev_flags & DEV_FLAGS_SYNC))
321 i |= DDMA_CFG_SYNC;
322 cp->ddma_cfg = i;
323 au_sync();
324
325 /* Return a non-zero value that can be used to
326 * find the channel information in subsequent
327 * operations.
328 */
329 rv = (u32)(&chan_tab_ptr[chan]);
330 } else {
331 /* Release devices */
332 stp->dev_flags &= ~DEV_FLAGS_INUSE;
333 dtp->dev_flags &= ~DEV_FLAGS_INUSE;
334 }
335 }
336 return rv;
337}
338EXPORT_SYMBOL(au1xxx_dbdma_chan_alloc);
339
340/*
341 * Set the device width if source or destination is a FIFO.
342 * Should be 8, 16, or 32 bits.
343 */
344u32 au1xxx_dbdma_set_devwidth(u32 chanid, int bits)
345{
346 u32 rv;
347 chan_tab_t *ctp;
348 dbdev_tab_t *stp, *dtp;
349
350 ctp = *((chan_tab_t **)chanid);
351 stp = ctp->chan_src;
352 dtp = ctp->chan_dest;
353 rv = 0;
354
355 if (stp->dev_flags & DEV_FLAGS_IN) { /* Source in fifo */
356 rv = stp->dev_devwidth;
357 stp->dev_devwidth = bits;
358 }
359 if (dtp->dev_flags & DEV_FLAGS_OUT) { /* Destination out fifo */
360 rv = dtp->dev_devwidth;
361 dtp->dev_devwidth = bits;
362 }
363
364 return rv;
365}
366EXPORT_SYMBOL(au1xxx_dbdma_set_devwidth);
367
368/* Allocate a descriptor ring, initializing as much as possible. */
369u32 au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
370{
371 int i;
372 u32 desc_base, srcid, destid;
373 u32 cmd0, cmd1, src1, dest1;
374 u32 src0, dest0;
375 chan_tab_t *ctp;
376 dbdev_tab_t *stp, *dtp;
377 au1x_ddma_desc_t *dp;
378
379 /*
380 * I guess we could check this to be within the
381 * range of the table......
382 */
383 ctp = *((chan_tab_t **)chanid);
384 stp = ctp->chan_src;
385 dtp = ctp->chan_dest;
386
387 /*
388 * The descriptors must be 32-byte aligned. There is a
389 * possibility the allocation will give us such an address,
390 * and if we try that first we are likely to not waste larger
391 * slabs of memory.
392 */
393 desc_base = (u32)kmalloc(entries * sizeof(au1x_ddma_desc_t),
394 GFP_KERNEL|GFP_DMA);
395 if (desc_base == 0)
396 return 0;
397
398 if (desc_base & 0x1f) {
399 /*
400 * Lost....do it again, allocate extra, and round
401 * the address base.
402 */
403 kfree((const void *)desc_base);
404 i = entries * sizeof(au1x_ddma_desc_t);
405 i += (sizeof(au1x_ddma_desc_t) - 1);
406 desc_base = (u32)kmalloc(i, GFP_KERNEL|GFP_DMA);
407 if (desc_base == 0)
408 return 0;
409
410 desc_base = ALIGN_ADDR(desc_base, sizeof(au1x_ddma_desc_t));
411 }
412 dp = (au1x_ddma_desc_t *)desc_base;
413
414 /* Keep track of the base descriptor. */
415 ctp->chan_desc_base = dp;
416
417 /* Initialize the rings with as much information as we know. */
418 srcid = stp->dev_id;
419 destid = dtp->dev_id;
420
421 cmd0 = cmd1 = src1 = dest1 = 0;
422 src0 = dest0 = 0;
423
424 cmd0 |= DSCR_CMD0_SID(srcid);
425 cmd0 |= DSCR_CMD0_DID(destid);
426 cmd0 |= DSCR_CMD0_IE | DSCR_CMD0_CV;
427 cmd0 |= DSCR_CMD0_ST(DSCR_CMD0_ST_NOCHANGE);
428
429 /* Is it mem to mem transfer? */
430 if (((DSCR_CUSTOM2DEV_ID(srcid) == DSCR_CMD0_THROTTLE) ||
431 (DSCR_CUSTOM2DEV_ID(srcid) == DSCR_CMD0_ALWAYS)) &&
432 ((DSCR_CUSTOM2DEV_ID(destid) == DSCR_CMD0_THROTTLE) ||
433 (DSCR_CUSTOM2DEV_ID(destid) == DSCR_CMD0_ALWAYS)))
434 cmd0 |= DSCR_CMD0_MEM;
435
436 switch (stp->dev_devwidth) {
437 case 8:
438 cmd0 |= DSCR_CMD0_SW(DSCR_CMD0_BYTE);
439 break;
440 case 16:
441 cmd0 |= DSCR_CMD0_SW(DSCR_CMD0_HALFWORD);
442 break;
443 case 32:
444 default:
445 cmd0 |= DSCR_CMD0_SW(DSCR_CMD0_WORD);
446 break;
447 }
448
449 switch (dtp->dev_devwidth) {
450 case 8:
451 cmd0 |= DSCR_CMD0_DW(DSCR_CMD0_BYTE);
452 break;
453 case 16:
454 cmd0 |= DSCR_CMD0_DW(DSCR_CMD0_HALFWORD);
455 break;
456 case 32:
457 default:
458 cmd0 |= DSCR_CMD0_DW(DSCR_CMD0_WORD);
459 break;
460 }
461
462 /*
463 * If the device is marked as an in/out FIFO, ensure it is
464 * set non-coherent.
465 */
466 if (stp->dev_flags & DEV_FLAGS_IN)
467 cmd0 |= DSCR_CMD0_SN; /* Source in FIFO */
468 if (dtp->dev_flags & DEV_FLAGS_OUT)
469 cmd0 |= DSCR_CMD0_DN; /* Destination out FIFO */
470
471 /*
472 * Set up source1. For now, assume no stride and increment.
473 * A channel attribute update can change this later.
474 */
475 switch (stp->dev_tsize) {
476 case 1:
477 src1 |= DSCR_SRC1_STS(DSCR_xTS_SIZE1);
478 break;
479 case 2:
480 src1 |= DSCR_SRC1_STS(DSCR_xTS_SIZE2);
481 break;
482 case 4:
483 src1 |= DSCR_SRC1_STS(DSCR_xTS_SIZE4);
484 break;
485 case 8:
486 default:
487 src1 |= DSCR_SRC1_STS(DSCR_xTS_SIZE8);
488 break;
489 }
490
491 /* If source input is FIFO, set static address. */
492 if (stp->dev_flags & DEV_FLAGS_IN) {
493 if (stp->dev_flags & DEV_FLAGS_BURSTABLE)
494 src1 |= DSCR_SRC1_SAM(DSCR_xAM_BURST);
495 else
496 src1 |= DSCR_SRC1_SAM(DSCR_xAM_STATIC);
497 }
498
499 if (stp->dev_physaddr)
500 src0 = stp->dev_physaddr;
501
502 /*
503 * Set up dest1. For now, assume no stride and increment.
504 * A channel attribute update can change this later.
505 */
506 switch (dtp->dev_tsize) {
507 case 1:
508 dest1 |= DSCR_DEST1_DTS(DSCR_xTS_SIZE1);
509 break;
510 case 2:
511 dest1 |= DSCR_DEST1_DTS(DSCR_xTS_SIZE2);
512 break;
513 case 4:
514 dest1 |= DSCR_DEST1_DTS(DSCR_xTS_SIZE4);
515 break;
516 case 8:
517 default:
518 dest1 |= DSCR_DEST1_DTS(DSCR_xTS_SIZE8);
519 break;
520 }
521
522 /* If destination output is FIFO, set static address. */
523 if (dtp->dev_flags & DEV_FLAGS_OUT) {
524 if (dtp->dev_flags & DEV_FLAGS_BURSTABLE)
525 dest1 |= DSCR_DEST1_DAM(DSCR_xAM_BURST);
526 else
527 dest1 |= DSCR_DEST1_DAM(DSCR_xAM_STATIC);
528 }
529
530 if (dtp->dev_physaddr)
531 dest0 = dtp->dev_physaddr;
532
533#if 0
534 printk(KERN_DEBUG "did:%x sid:%x cmd0:%x cmd1:%x source0:%x "
535 "source1:%x dest0:%x dest1:%x\n",
536 dtp->dev_id, stp->dev_id, cmd0, cmd1, src0,
537 src1, dest0, dest1);
538#endif
539 for (i = 0; i < entries; i++) {
540 dp->dscr_cmd0 = cmd0;
541 dp->dscr_cmd1 = cmd1;
542 dp->dscr_source0 = src0;
543 dp->dscr_source1 = src1;
544 dp->dscr_dest0 = dest0;
545 dp->dscr_dest1 = dest1;
546 dp->dscr_stat = 0;
547 dp->sw_context = 0;
548 dp->sw_status = 0;
549 dp->dscr_nxtptr = DSCR_NXTPTR(virt_to_phys(dp + 1));
550 dp++;
551 }
552
553 /* Make last descrptor point to the first. */
554 dp--;
555 dp->dscr_nxtptr = DSCR_NXTPTR(virt_to_phys(ctp->chan_desc_base));
556 ctp->get_ptr = ctp->put_ptr = ctp->cur_ptr = ctp->chan_desc_base;
557
558 return (u32)ctp->chan_desc_base;
559}
560EXPORT_SYMBOL(au1xxx_dbdma_ring_alloc);
561
562/*
563 * Put a source buffer into the DMA ring.
564 * This updates the source pointer and byte count. Normally used
565 * for memory to fifo transfers.
566 */
567u32 _au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes, u32 flags)
568{
569 chan_tab_t *ctp;
570 au1x_ddma_desc_t *dp;
571
572 /*
573 * I guess we could check this to be within the
574 * range of the table......
575 */
576 ctp = *(chan_tab_t **)chanid;
577
578 /*
579 * We should have multiple callers for a particular channel,
580 * an interrupt doesn't affect this pointer nor the descriptor,
581 * so no locking should be needed.
582 */
583 dp = ctp->put_ptr;
584
585 /*
586 * If the descriptor is valid, we are way ahead of the DMA
587 * engine, so just return an error condition.
588 */
589 if (dp->dscr_cmd0 & DSCR_CMD0_V)
590 return 0;
591
592 /* Load up buffer address and byte count. */
593 dp->dscr_source0 = virt_to_phys(buf);
594 dp->dscr_cmd1 = nbytes;
595 /* Check flags */
596 if (flags & DDMA_FLAGS_IE)
597 dp->dscr_cmd0 |= DSCR_CMD0_IE;
598 if (flags & DDMA_FLAGS_NOIE)
599 dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
600
601 /*
602 * There is an errata on the Au1200/Au1550 parts that could result
603 * in "stale" data being DMA'ed. It has to do with the snoop logic on
604 * the cache eviction buffer. DMA_NONCOHERENT is on by default for
605 * these parts. If it is fixed in the future, these dma_cache_inv will
606 * just be nothing more than empty macros. See io.h.
607 */
608 dma_cache_wback_inv((unsigned long)buf, nbytes);
609 dp->dscr_cmd0 |= DSCR_CMD0_V; /* Let it rip */
610 au_sync();
611 dma_cache_wback_inv((unsigned long)dp, sizeof(dp));
612 ctp->chan_ptr->ddma_dbell = 0;
613
614 /* Get next descriptor pointer. */
615 ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
616
617 /* Return something non-zero. */
618 return nbytes;
619}
620EXPORT_SYMBOL(_au1xxx_dbdma_put_source);
621
622/* Put a destination buffer into the DMA ring.
623 * This updates the destination pointer and byte count. Normally used
624 * to place an empty buffer into the ring for fifo to memory transfers.
625 */
626u32
627_au1xxx_dbdma_put_dest(u32 chanid, void *buf, int nbytes, u32 flags)
628{
629 chan_tab_t *ctp;
630 au1x_ddma_desc_t *dp;
631
632 /* I guess we could check this to be within the
633 * range of the table......
634 */
635 ctp = *((chan_tab_t **)chanid);
636
637 /* We should have multiple callers for a particular channel,
638 * an interrupt doesn't affect this pointer nor the descriptor,
639 * so no locking should be needed.
640 */
641 dp = ctp->put_ptr;
642
643 /* If the descriptor is valid, we are way ahead of the DMA
644 * engine, so just return an error condition.
645 */
646 if (dp->dscr_cmd0 & DSCR_CMD0_V)
647 return 0;
648
649 /* Load up buffer address and byte count */
650
651 /* Check flags */
652 if (flags & DDMA_FLAGS_IE)
653 dp->dscr_cmd0 |= DSCR_CMD0_IE;
654 if (flags & DDMA_FLAGS_NOIE)
655 dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
656
657 dp->dscr_dest0 = virt_to_phys(buf);
658 dp->dscr_cmd1 = nbytes;
659#if 0
660 printk(KERN_DEBUG "cmd0:%x cmd1:%x source0:%x source1:%x dest0:%x dest1:%x\n",
661 dp->dscr_cmd0, dp->dscr_cmd1, dp->dscr_source0,
662 dp->dscr_source1, dp->dscr_dest0, dp->dscr_dest1);
663#endif
664 /*
665 * There is an errata on the Au1200/Au1550 parts that could result in
666 * "stale" data being DMA'ed. It has to do with the snoop logic on the
667 * cache eviction buffer. DMA_NONCOHERENT is on by default for these
668 * parts. If it is fixed in the future, these dma_cache_inv will just
669 * be nothing more than empty macros. See io.h.
670 */
671 dma_cache_inv((unsigned long)buf, nbytes);
672 dp->dscr_cmd0 |= DSCR_CMD0_V; /* Let it rip */
673 au_sync();
674 dma_cache_wback_inv((unsigned long)dp, sizeof(dp));
675 ctp->chan_ptr->ddma_dbell = 0;
676
677 /* Get next descriptor pointer. */
678 ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
679
680 /* Return something non-zero. */
681 return nbytes;
682}
683EXPORT_SYMBOL(_au1xxx_dbdma_put_dest);
684
685/*
686 * Get a destination buffer into the DMA ring.
687 * Normally used to get a full buffer from the ring during fifo
688 * to memory transfers. This does not set the valid bit, you will
689 * have to put another destination buffer to keep the DMA going.
690 */
691u32 au1xxx_dbdma_get_dest(u32 chanid, void **buf, int *nbytes)
692{
693 chan_tab_t *ctp;
694 au1x_ddma_desc_t *dp;
695 u32 rv;
696
697 /*
698 * I guess we could check this to be within the
699 * range of the table......
700 */
701 ctp = *((chan_tab_t **)chanid);
702
703 /*
704 * We should have multiple callers for a particular channel,
705 * an interrupt doesn't affect this pointer nor the descriptor,
706 * so no locking should be needed.
707 */
708 dp = ctp->get_ptr;
709
710 /*
711 * If the descriptor is valid, we are way ahead of the DMA
712 * engine, so just return an error condition.
713 */
714 if (dp->dscr_cmd0 & DSCR_CMD0_V)
715 return 0;
716
717 /* Return buffer address and byte count. */
718 *buf = (void *)(phys_to_virt(dp->dscr_dest0));
719 *nbytes = dp->dscr_cmd1;
720 rv = dp->dscr_stat;
721
722 /* Get next descriptor pointer. */
723 ctp->get_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
724
725 /* Return something non-zero. */
726 return rv;
727}
728EXPORT_SYMBOL_GPL(au1xxx_dbdma_get_dest);
729
730void au1xxx_dbdma_stop(u32 chanid)
731{
732 chan_tab_t *ctp;
733 au1x_dma_chan_t *cp;
734 int halt_timeout = 0;
735
736 ctp = *((chan_tab_t **)chanid);
737
738 cp = ctp->chan_ptr;
739 cp->ddma_cfg &= ~DDMA_CFG_EN; /* Disable channel */
740 au_sync();
741 while (!(cp->ddma_stat & DDMA_STAT_H)) {
742 udelay(1);
743 halt_timeout++;
744 if (halt_timeout > 100) {
745 printk(KERN_WARNING "warning: DMA channel won't halt\n");
746 break;
747 }
748 }
749 /* clear current desc valid and doorbell */
750 cp->ddma_stat |= (DDMA_STAT_DB | DDMA_STAT_V);
751 au_sync();
752}
753EXPORT_SYMBOL(au1xxx_dbdma_stop);
754
755/*
756 * Start using the current descriptor pointer. If the DBDMA encounters
757 * a non-valid descriptor, it will stop. In this case, we can just
758 * continue by adding a buffer to the list and starting again.
759 */
760void au1xxx_dbdma_start(u32 chanid)
761{
762 chan_tab_t *ctp;
763 au1x_dma_chan_t *cp;
764
765 ctp = *((chan_tab_t **)chanid);
766 cp = ctp->chan_ptr;
767 cp->ddma_desptr = virt_to_phys(ctp->cur_ptr);
768 cp->ddma_cfg |= DDMA_CFG_EN; /* Enable channel */
769 au_sync();
770 cp->ddma_dbell = 0;
771 au_sync();
772}
773EXPORT_SYMBOL(au1xxx_dbdma_start);
774
775void au1xxx_dbdma_reset(u32 chanid)
776{
777 chan_tab_t *ctp;
778 au1x_ddma_desc_t *dp;
779
780 au1xxx_dbdma_stop(chanid);
781
782 ctp = *((chan_tab_t **)chanid);
783 ctp->get_ptr = ctp->put_ptr = ctp->cur_ptr = ctp->chan_desc_base;
784
785 /* Run through the descriptors and reset the valid indicator. */
786 dp = ctp->chan_desc_base;
787
788 do {
789 dp->dscr_cmd0 &= ~DSCR_CMD0_V;
790 /*
791 * Reset our software status -- this is used to determine
792 * if a descriptor is in use by upper level software. Since
793 * posting can reset 'V' bit.
794 */
795 dp->sw_status = 0;
796 dp = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
797 } while (dp != ctp->chan_desc_base);
798}
799EXPORT_SYMBOL(au1xxx_dbdma_reset);
800
801u32 au1xxx_get_dma_residue(u32 chanid)
802{
803 chan_tab_t *ctp;
804 au1x_dma_chan_t *cp;
805 u32 rv;
806
807 ctp = *((chan_tab_t **)chanid);
808 cp = ctp->chan_ptr;
809
810 /* This is only valid if the channel is stopped. */
811 rv = cp->ddma_bytecnt;
812 au_sync();
813
814 return rv;
815}
816EXPORT_SYMBOL_GPL(au1xxx_get_dma_residue);
817
818void au1xxx_dbdma_chan_free(u32 chanid)
819{
820 chan_tab_t *ctp;
821 dbdev_tab_t *stp, *dtp;
822
823 ctp = *((chan_tab_t **)chanid);
824 stp = ctp->chan_src;
825 dtp = ctp->chan_dest;
826
827 au1xxx_dbdma_stop(chanid);
828
829 kfree((void *)ctp->chan_desc_base);
830
831 stp->dev_flags &= ~DEV_FLAGS_INUSE;
832 dtp->dev_flags &= ~DEV_FLAGS_INUSE;
833 chan_tab_ptr[ctp->chan_index] = NULL;
834
835 kfree(ctp);
836}
837EXPORT_SYMBOL(au1xxx_dbdma_chan_free);
838
839static irqreturn_t dbdma_interrupt(int irq, void *dev_id)
840{
841 u32 intstat;
842 u32 chan_index;
843 chan_tab_t *ctp;
844 au1x_ddma_desc_t *dp;
845 au1x_dma_chan_t *cp;
846
847 intstat = dbdma_gptr->ddma_intstat;
848 au_sync();
849 chan_index = __ffs(intstat);
850
851 ctp = chan_tab_ptr[chan_index];
852 cp = ctp->chan_ptr;
853 dp = ctp->cur_ptr;
854
855 /* Reset interrupt. */
856 cp->ddma_irq = 0;
857 au_sync();
858
859 if (ctp->chan_callback)
860 ctp->chan_callback(irq, ctp->chan_callparam);
861
862 ctp->cur_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
863 return IRQ_RETVAL(1);
864}
865
866static void au1xxx_dbdma_init(void)
867{
868 int irq_nr;
869
870 dbdma_gptr->ddma_config = 0;
871 dbdma_gptr->ddma_throttle = 0;
872 dbdma_gptr->ddma_inten = 0xffff;
873 au_sync();
874
875#if defined(CONFIG_SOC_AU1550)
876 irq_nr = AU1550_DDMA_INT;
877#elif defined(CONFIG_SOC_AU1200)
878 irq_nr = AU1200_DDMA_INT;
879#else
880 #error Unknown Au1x00 SOC
881#endif
882
883 if (request_irq(irq_nr, dbdma_interrupt, IRQF_DISABLED,
884 "Au1xxx dbdma", (void *)dbdma_gptr))
885 printk(KERN_ERR "Can't get 1550 dbdma irq");
886}
887
888void au1xxx_dbdma_dump(u32 chanid)
889{
890 chan_tab_t *ctp;
891 au1x_ddma_desc_t *dp;
892 dbdev_tab_t *stp, *dtp;
893 au1x_dma_chan_t *cp;
894 u32 i = 0;
895
896 ctp = *((chan_tab_t **)chanid);
897 stp = ctp->chan_src;
898 dtp = ctp->chan_dest;
899 cp = ctp->chan_ptr;
900
901 printk(KERN_DEBUG "Chan %x, stp %x (dev %d) dtp %x (dev %d) \n",
902 (u32)ctp, (u32)stp, stp - dbdev_tab, (u32)dtp,
903 dtp - dbdev_tab);
904 printk(KERN_DEBUG "desc base %x, get %x, put %x, cur %x\n",
905 (u32)(ctp->chan_desc_base), (u32)(ctp->get_ptr),
906 (u32)(ctp->put_ptr), (u32)(ctp->cur_ptr));
907
908 printk(KERN_DEBUG "dbdma chan %x\n", (u32)cp);
909 printk(KERN_DEBUG "cfg %08x, desptr %08x, statptr %08x\n",
910 cp->ddma_cfg, cp->ddma_desptr, cp->ddma_statptr);
911 printk(KERN_DEBUG "dbell %08x, irq %08x, stat %08x, bytecnt %08x\n",
912 cp->ddma_dbell, cp->ddma_irq, cp->ddma_stat,
913 cp->ddma_bytecnt);
914
915 /* Run through the descriptors */
916 dp = ctp->chan_desc_base;
917
918 do {
919 printk(KERN_DEBUG "Dp[%d]= %08x, cmd0 %08x, cmd1 %08x\n",
920 i++, (u32)dp, dp->dscr_cmd0, dp->dscr_cmd1);
921 printk(KERN_DEBUG "src0 %08x, src1 %08x, dest0 %08x, dest1 %08x\n",
922 dp->dscr_source0, dp->dscr_source1,
923 dp->dscr_dest0, dp->dscr_dest1);
924 printk(KERN_DEBUG "stat %08x, nxtptr %08x\n",
925 dp->dscr_stat, dp->dscr_nxtptr);
926 dp = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
927 } while (dp != ctp->chan_desc_base);
928}
929
930/* Put a descriptor into the DMA ring.
931 * This updates the source/destination pointers and byte count.
932 */
933u32 au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr)
934{
935 chan_tab_t *ctp;
936 au1x_ddma_desc_t *dp;
937 u32 nbytes = 0;
938
939 /*
940 * I guess we could check this to be within the
941 * range of the table......
942 */
943 ctp = *((chan_tab_t **)chanid);
944
945 /*
946 * We should have multiple callers for a particular channel,
947 * an interrupt doesn't affect this pointer nor the descriptor,
948 * so no locking should be needed.
949 */
950 dp = ctp->put_ptr;
951
952 /*
953 * If the descriptor is valid, we are way ahead of the DMA
954 * engine, so just return an error condition.
955 */
956 if (dp->dscr_cmd0 & DSCR_CMD0_V)
957 return 0;
958
959 /* Load up buffer addresses and byte count. */
960 dp->dscr_dest0 = dscr->dscr_dest0;
961 dp->dscr_source0 = dscr->dscr_source0;
962 dp->dscr_dest1 = dscr->dscr_dest1;
963 dp->dscr_source1 = dscr->dscr_source1;
964 dp->dscr_cmd1 = dscr->dscr_cmd1;
965 nbytes = dscr->dscr_cmd1;
966 /* Allow the caller to specifiy if an interrupt is generated */
967 dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
968 dp->dscr_cmd0 |= dscr->dscr_cmd0 | DSCR_CMD0_V;
969 ctp->chan_ptr->ddma_dbell = 0;
970
971 /* Get next descriptor pointer. */
972 ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
973
974 /* Return something non-zero. */
975 return nbytes;
976}
977
978#endif /* defined(CONFIG_SOC_AU1550) || defined(CONFIG_SOC_AU1200) */
diff --git a/arch/mips/alchemy/common/dma.c b/arch/mips/alchemy/common/dma.c
new file mode 100644
index 000000000000..d6fbda232e6a
--- /dev/null
+++ b/arch/mips/alchemy/common/dma.c
@@ -0,0 +1,238 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * A DMA channel allocator for Au1x00. API is modeled loosely off of
5 * linux/kernel/dma.c.
6 *
7 * Copyright 2000, 2008 MontaVista Software Inc.
8 * Author: MontaVista Software, Inc. <source@mvista.com>
9 * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 *
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
19 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
22 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
23 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * You should have received a copy of the GNU General Public License along
28 * with this program; if not, write to the Free Software Foundation, Inc.,
29 * 675 Mass Ave, Cambridge, MA 02139, USA.
30 *
31 */
32#include <linux/module.h>
33#include <linux/kernel.h>
34#include <linux/errno.h>
35#include <linux/spinlock.h>
36#include <linux/interrupt.h>
37
38#include <asm/mach-au1x00/au1000.h>
39#include <asm/mach-au1x00/au1000_dma.h>
40
41#if defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1500) || \
42 defined(CONFIG_SOC_AU1100)
43/*
44 * A note on resource allocation:
45 *
46 * All drivers needing DMA channels, should allocate and release them
47 * through the public routines `request_dma()' and `free_dma()'.
48 *
49 * In order to avoid problems, all processes should allocate resources in
50 * the same sequence and release them in the reverse order.
51 *
52 * So, when allocating DMAs and IRQs, first allocate the DMA, then the IRQ.
53 * When releasing them, first release the IRQ, then release the DMA. The
54 * main reason for this order is that, if you are requesting the DMA buffer
55 * done interrupt, you won't know the irq number until the DMA channel is
56 * returned from request_dma.
57 */
58
59DEFINE_SPINLOCK(au1000_dma_spin_lock);
60
61struct dma_chan au1000_dma_table[NUM_AU1000_DMA_CHANNELS] = {
62 {.dev_id = -1,},
63 {.dev_id = -1,},
64 {.dev_id = -1,},
65 {.dev_id = -1,},
66 {.dev_id = -1,},
67 {.dev_id = -1,},
68 {.dev_id = -1,},
69 {.dev_id = -1,}
70};
71EXPORT_SYMBOL(au1000_dma_table);
72
73/* Device FIFO addresses and default DMA modes */
74static const struct dma_dev {
75 unsigned int fifo_addr;
76 unsigned int dma_mode;
77} dma_dev_table[DMA_NUM_DEV] = {
78 {UART0_ADDR + UART_TX, 0},
79 {UART0_ADDR + UART_RX, 0},
80 {0, 0},
81 {0, 0},
82 {AC97C_DATA, DMA_DW16 }, /* coherent */
83 {AC97C_DATA, DMA_DR | DMA_DW16 }, /* coherent */
84 {UART3_ADDR + UART_TX, DMA_DW8 | DMA_NC},
85 {UART3_ADDR + UART_RX, DMA_DR | DMA_DW8 | DMA_NC},
86 {USBD_EP0RD, DMA_DR | DMA_DW8 | DMA_NC},
87 {USBD_EP0WR, DMA_DW8 | DMA_NC},
88 {USBD_EP2WR, DMA_DW8 | DMA_NC},
89 {USBD_EP3WR, DMA_DW8 | DMA_NC},
90 {USBD_EP4RD, DMA_DR | DMA_DW8 | DMA_NC},
91 {USBD_EP5RD, DMA_DR | DMA_DW8 | DMA_NC},
92 {I2S_DATA, DMA_DW32 | DMA_NC},
93 {I2S_DATA, DMA_DR | DMA_DW32 | DMA_NC}
94};
95
96int au1000_dma_read_proc(char *buf, char **start, off_t fpos,
97 int length, int *eof, void *data)
98{
99 int i, len = 0;
100 struct dma_chan *chan;
101
102 for (i = 0; i < NUM_AU1000_DMA_CHANNELS; i++) {
103 chan = get_dma_chan(i);
104 if (chan != NULL)
105 len += sprintf(buf + len, "%2d: %s\n",
106 i, chan->dev_str);
107 }
108
109 if (fpos >= len) {
110 *start = buf;
111 *eof = 1;
112 return 0;
113 }
114 *start = buf + fpos;
115 len -= fpos;
116 if (len > length)
117 return length;
118 *eof = 1;
119 return len;
120}
121
122/* Device FIFO addresses and default DMA modes - 2nd bank */
123static const struct dma_dev dma_dev_table_bank2[DMA_NUM_DEV_BANK2] = {
124 { SD0_XMIT_FIFO, DMA_DS | DMA_DW8 }, /* coherent */
125 { SD0_RECV_FIFO, DMA_DS | DMA_DR | DMA_DW8 }, /* coherent */
126 { SD1_XMIT_FIFO, DMA_DS | DMA_DW8 }, /* coherent */
127 { SD1_RECV_FIFO, DMA_DS | DMA_DR | DMA_DW8 } /* coherent */
128};
129
130void dump_au1000_dma_channel(unsigned int dmanr)
131{
132 struct dma_chan *chan;
133
134 if (dmanr >= NUM_AU1000_DMA_CHANNELS)
135 return;
136 chan = &au1000_dma_table[dmanr];
137
138 printk(KERN_INFO "Au1000 DMA%d Register Dump:\n", dmanr);
139 printk(KERN_INFO " mode = 0x%08x\n",
140 au_readl(chan->io + DMA_MODE_SET));
141 printk(KERN_INFO " addr = 0x%08x\n",
142 au_readl(chan->io + DMA_PERIPHERAL_ADDR));
143 printk(KERN_INFO " start0 = 0x%08x\n",
144 au_readl(chan->io + DMA_BUFFER0_START));
145 printk(KERN_INFO " start1 = 0x%08x\n",
146 au_readl(chan->io + DMA_BUFFER1_START));
147 printk(KERN_INFO " count0 = 0x%08x\n",
148 au_readl(chan->io + DMA_BUFFER0_COUNT));
149 printk(KERN_INFO " count1 = 0x%08x\n",
150 au_readl(chan->io + DMA_BUFFER1_COUNT));
151}
152
153/*
154 * Finds a free channel, and binds the requested device to it.
155 * Returns the allocated channel number, or negative on error.
156 * Requests the DMA done IRQ if irqhandler != NULL.
157 */
158int request_au1000_dma(int dev_id, const char *dev_str,
159 irq_handler_t irqhandler,
160 unsigned long irqflags,
161 void *irq_dev_id)
162{
163 struct dma_chan *chan;
164 const struct dma_dev *dev;
165 int i, ret;
166
167#if defined(CONFIG_SOC_AU1100)
168 if (dev_id < 0 || dev_id >= (DMA_NUM_DEV + DMA_NUM_DEV_BANK2))
169 return -EINVAL;
170#else
171 if (dev_id < 0 || dev_id >= DMA_NUM_DEV)
172 return -EINVAL;
173#endif
174
175 for (i = 0; i < NUM_AU1000_DMA_CHANNELS; i++)
176 if (au1000_dma_table[i].dev_id < 0)
177 break;
178
179 if (i == NUM_AU1000_DMA_CHANNELS)
180 return -ENODEV;
181
182 chan = &au1000_dma_table[i];
183
184 if (dev_id >= DMA_NUM_DEV) {
185 dev_id -= DMA_NUM_DEV;
186 dev = &dma_dev_table_bank2[dev_id];
187 } else
188 dev = &dma_dev_table[dev_id];
189
190 if (irqhandler) {
191 chan->irq = AU1000_DMA_INT_BASE + i;
192 chan->irq_dev = irq_dev_id;
193 ret = request_irq(chan->irq, irqhandler, irqflags, dev_str,
194 chan->irq_dev);
195 if (ret) {
196 chan->irq = 0;
197 chan->irq_dev = NULL;
198 return ret;
199 }
200 } else {
201 chan->irq = 0;
202 chan->irq_dev = NULL;
203 }
204
205 /* fill it in */
206 chan->io = DMA_CHANNEL_BASE + i * DMA_CHANNEL_LEN;
207 chan->dev_id = dev_id;
208 chan->dev_str = dev_str;
209 chan->fifo_addr = dev->fifo_addr;
210 chan->mode = dev->dma_mode;
211
212 /* initialize the channel before returning */
213 init_dma(i);
214
215 return i;
216}
217EXPORT_SYMBOL(request_au1000_dma);
218
219void free_au1000_dma(unsigned int dmanr)
220{
221 struct dma_chan *chan = get_dma_chan(dmanr);
222
223 if (!chan) {
224 printk(KERN_ERR "Error trying to free DMA%d\n", dmanr);
225 return;
226 }
227
228 disable_dma(dmanr);
229 if (chan->irq)
230 free_irq(chan->irq, chan->irq_dev);
231
232 chan->irq = 0;
233 chan->irq_dev = NULL;
234 chan->dev_id = -1;
235}
236EXPORT_SYMBOL(free_au1000_dma);
237
238#endif /* AU1000 AU1500 AU1100 */
diff --git a/arch/mips/alchemy/common/gpio.c b/arch/mips/alchemy/common/gpio.c
new file mode 100644
index 000000000000..e660ddd611c4
--- /dev/null
+++ b/arch/mips/alchemy/common/gpio.c
@@ -0,0 +1,148 @@
1/*
2 * Copyright (C) 2007, OpenWrt.org, Florian Fainelli <florian@openwrt.org>
3 * Architecture specific GPIO support
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; either version 2 of the License, or (at your
8 * option) any later version.
9 *
10 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
11 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
13 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
14 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
15 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
16 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
17 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
18 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
19 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
20 *
21 * You should have received a copy of the GNU General Public License along
22 * with this program; if not, write to the Free Software Foundation, Inc.,
23 * 675 Mass Ave, Cambridge, MA 02139, USA.
24 *
25 * Notes :
26 * au1000 SoC have only one GPIO line : GPIO1
27 * others have a second one : GPIO2
28 */
29
30#include <linux/module.h>
31
32#include <asm/mach-au1x00/au1000.h>
33#include <asm/gpio.h>
34
35#define gpio1 sys
36#if !defined(CONFIG_SOC_AU1000)
37
38static struct au1x00_gpio2 *const gpio2 = (struct au1x00_gpio2 *) GPIO2_BASE;
39#define GPIO2_OUTPUT_ENABLE_MASK 0x00010000
40
41static int au1xxx_gpio2_read(unsigned gpio)
42{
43 gpio -= AU1XXX_GPIO_BASE;
44 return ((gpio2->pinstate >> gpio) & 0x01);
45}
46
47static void au1xxx_gpio2_write(unsigned gpio, int value)
48{
49 gpio -= AU1XXX_GPIO_BASE;
50
51 gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | ((!!value) << gpio);
52}
53
54static int au1xxx_gpio2_direction_input(unsigned gpio)
55{
56 gpio -= AU1XXX_GPIO_BASE;
57 gpio2->dir &= ~(0x01 << gpio);
58 return 0;
59}
60
61static int au1xxx_gpio2_direction_output(unsigned gpio, int value)
62{
63 gpio -= AU1XXX_GPIO_BASE;
64 gpio2->dir |= 0x01 << gpio;
65 gpio2->output = (GPIO2_OUTPUT_ENABLE_MASK << gpio) | ((!!value) << gpio);
66 return 0;
67}
68
69#endif /* !defined(CONFIG_SOC_AU1000) */
70
71static int au1xxx_gpio1_read(unsigned gpio)
72{
73 return (gpio1->pinstaterd >> gpio) & 0x01;
74}
75
76static void au1xxx_gpio1_write(unsigned gpio, int value)
77{
78 if (value)
79 gpio1->outputset = (0x01 << gpio);
80 else
81 /* Output a zero */
82 gpio1->outputclr = (0x01 << gpio);
83}
84
85static int au1xxx_gpio1_direction_input(unsigned gpio)
86{
87 gpio1->pininputen = (0x01 << gpio);
88 return 0;
89}
90
91static int au1xxx_gpio1_direction_output(unsigned gpio, int value)
92{
93 gpio1->trioutclr = (0x01 & gpio);
94 au1xxx_gpio1_write(gpio, value);
95 return 0;
96}
97
98int au1xxx_gpio_get_value(unsigned gpio)
99{
100 if (gpio >= AU1XXX_GPIO_BASE)
101#if defined(CONFIG_SOC_AU1000)
102 return 0;
103#else
104 return au1xxx_gpio2_read(gpio);
105#endif
106 else
107 return au1xxx_gpio1_read(gpio);
108}
109EXPORT_SYMBOL(au1xxx_gpio_get_value);
110
111void au1xxx_gpio_set_value(unsigned gpio, int value)
112{
113 if (gpio >= AU1XXX_GPIO_BASE)
114#if defined(CONFIG_SOC_AU1000)
115 ;
116#else
117 au1xxx_gpio2_write(gpio, value);
118#endif
119 else
120 au1xxx_gpio1_write(gpio, value);
121}
122EXPORT_SYMBOL(au1xxx_gpio_set_value);
123
124int au1xxx_gpio_direction_input(unsigned gpio)
125{
126 if (gpio >= AU1XXX_GPIO_BASE)
127#if defined(CONFIG_SOC_AU1000)
128 return -ENODEV;
129#else
130 return au1xxx_gpio2_direction_input(gpio);
131#endif
132
133 return au1xxx_gpio1_direction_input(gpio);
134}
135EXPORT_SYMBOL(au1xxx_gpio_direction_input);
136
137int au1xxx_gpio_direction_output(unsigned gpio, int value)
138{
139 if (gpio >= AU1XXX_GPIO_BASE)
140#if defined(CONFIG_SOC_AU1000)
141 return -ENODEV;
142#else
143 return au1xxx_gpio2_direction_output(gpio, value);
144#endif
145
146 return au1xxx_gpio1_direction_output(gpio, value);
147}
148EXPORT_SYMBOL(au1xxx_gpio_direction_output);
diff --git a/arch/mips/alchemy/common/irq.c b/arch/mips/alchemy/common/irq.c
new file mode 100644
index 000000000000..40c6ceceb5f9
--- /dev/null
+++ b/arch/mips/alchemy/common/irq.c
@@ -0,0 +1,596 @@
1/*
2 * Copyright 2001, 2007-2008 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc. <source@mvista.com>
4 *
5 * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
15 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
18 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 *
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write to the Free Software Foundation, Inc.,
25 * 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27#include <linux/bitops.h>
28#include <linux/init.h>
29#include <linux/interrupt.h>
30#include <linux/irq.h>
31
32#include <asm/irq_cpu.h>
33#include <asm/mipsregs.h>
34#include <asm/mach-au1x00/au1000.h>
35#ifdef CONFIG_MIPS_PB1000
36#include <asm/mach-pb1x00/pb1000.h>
37#endif
38
39#define EXT_INTC0_REQ0 2 /* IP 2 */
40#define EXT_INTC0_REQ1 3 /* IP 3 */
41#define EXT_INTC1_REQ0 4 /* IP 4 */
42#define EXT_INTC1_REQ1 5 /* IP 5 */
43#define MIPS_TIMER_IP 7 /* IP 7 */
44
45void (*board_init_irq)(void) __initdata = NULL;
46
47static DEFINE_SPINLOCK(irq_lock);
48
49#ifdef CONFIG_PM
50
51/*
52 * Save/restore the interrupt controller state.
53 * Called from the save/restore core registers as part of the
54 * au_sleep function in power.c.....maybe I should just pm_register()
55 * them instead?
56 */
57static unsigned int sleep_intctl_config0[2];
58static unsigned int sleep_intctl_config1[2];
59static unsigned int sleep_intctl_config2[2];
60static unsigned int sleep_intctl_src[2];
61static unsigned int sleep_intctl_assign[2];
62static unsigned int sleep_intctl_wake[2];
63static unsigned int sleep_intctl_mask[2];
64
65void save_au1xxx_intctl(void)
66{
67 sleep_intctl_config0[0] = au_readl(IC0_CFG0RD);
68 sleep_intctl_config1[0] = au_readl(IC0_CFG1RD);
69 sleep_intctl_config2[0] = au_readl(IC0_CFG2RD);
70 sleep_intctl_src[0] = au_readl(IC0_SRCRD);
71 sleep_intctl_assign[0] = au_readl(IC0_ASSIGNRD);
72 sleep_intctl_wake[0] = au_readl(IC0_WAKERD);
73 sleep_intctl_mask[0] = au_readl(IC0_MASKRD);
74
75 sleep_intctl_config0[1] = au_readl(IC1_CFG0RD);
76 sleep_intctl_config1[1] = au_readl(IC1_CFG1RD);
77 sleep_intctl_config2[1] = au_readl(IC1_CFG2RD);
78 sleep_intctl_src[1] = au_readl(IC1_SRCRD);
79 sleep_intctl_assign[1] = au_readl(IC1_ASSIGNRD);
80 sleep_intctl_wake[1] = au_readl(IC1_WAKERD);
81 sleep_intctl_mask[1] = au_readl(IC1_MASKRD);
82}
83
84/*
85 * For most restore operations, we clear the entire register and
86 * then set the bits we found during the save.
87 */
88void restore_au1xxx_intctl(void)
89{
90 au_writel(0xffffffff, IC0_MASKCLR); au_sync();
91
92 au_writel(0xffffffff, IC0_CFG0CLR); au_sync();
93 au_writel(sleep_intctl_config0[0], IC0_CFG0SET); au_sync();
94 au_writel(0xffffffff, IC0_CFG1CLR); au_sync();
95 au_writel(sleep_intctl_config1[0], IC0_CFG1SET); au_sync();
96 au_writel(0xffffffff, IC0_CFG2CLR); au_sync();
97 au_writel(sleep_intctl_config2[0], IC0_CFG2SET); au_sync();
98 au_writel(0xffffffff, IC0_SRCCLR); au_sync();
99 au_writel(sleep_intctl_src[0], IC0_SRCSET); au_sync();
100 au_writel(0xffffffff, IC0_ASSIGNCLR); au_sync();
101 au_writel(sleep_intctl_assign[0], IC0_ASSIGNSET); au_sync();
102 au_writel(0xffffffff, IC0_WAKECLR); au_sync();
103 au_writel(sleep_intctl_wake[0], IC0_WAKESET); au_sync();
104 au_writel(0xffffffff, IC0_RISINGCLR); au_sync();
105 au_writel(0xffffffff, IC0_FALLINGCLR); au_sync();
106 au_writel(0x00000000, IC0_TESTBIT); au_sync();
107
108 au_writel(0xffffffff, IC1_MASKCLR); au_sync();
109
110 au_writel(0xffffffff, IC1_CFG0CLR); au_sync();
111 au_writel(sleep_intctl_config0[1], IC1_CFG0SET); au_sync();
112 au_writel(0xffffffff, IC1_CFG1CLR); au_sync();
113 au_writel(sleep_intctl_config1[1], IC1_CFG1SET); au_sync();
114 au_writel(0xffffffff, IC1_CFG2CLR); au_sync();
115 au_writel(sleep_intctl_config2[1], IC1_CFG2SET); au_sync();
116 au_writel(0xffffffff, IC1_SRCCLR); au_sync();
117 au_writel(sleep_intctl_src[1], IC1_SRCSET); au_sync();
118 au_writel(0xffffffff, IC1_ASSIGNCLR); au_sync();
119 au_writel(sleep_intctl_assign[1], IC1_ASSIGNSET); au_sync();
120 au_writel(0xffffffff, IC1_WAKECLR); au_sync();
121 au_writel(sleep_intctl_wake[1], IC1_WAKESET); au_sync();
122 au_writel(0xffffffff, IC1_RISINGCLR); au_sync();
123 au_writel(0xffffffff, IC1_FALLINGCLR); au_sync();
124 au_writel(0x00000000, IC1_TESTBIT); au_sync();
125
126 au_writel(sleep_intctl_mask[1], IC1_MASKSET); au_sync();
127
128 au_writel(sleep_intctl_mask[0], IC0_MASKSET); au_sync();
129}
130#endif /* CONFIG_PM */
131
132
133inline void local_enable_irq(unsigned int irq_nr)
134{
135 unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
136
137 if (bit >= 32) {
138 au_writel(1 << (bit - 32), IC1_MASKSET);
139 au_writel(1 << (bit - 32), IC1_WAKESET);
140 } else {
141 au_writel(1 << bit, IC0_MASKSET);
142 au_writel(1 << bit, IC0_WAKESET);
143 }
144 au_sync();
145}
146
147
148inline void local_disable_irq(unsigned int irq_nr)
149{
150 unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
151
152 if (bit >= 32) {
153 au_writel(1 << (bit - 32), IC1_MASKCLR);
154 au_writel(1 << (bit - 32), IC1_WAKECLR);
155 } else {
156 au_writel(1 << bit, IC0_MASKCLR);
157 au_writel(1 << bit, IC0_WAKECLR);
158 }
159 au_sync();
160}
161
162
163static inline void mask_and_ack_rise_edge_irq(unsigned int irq_nr)
164{
165 unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
166
167 if (bit >= 32) {
168 au_writel(1 << (bit - 32), IC1_RISINGCLR);
169 au_writel(1 << (bit - 32), IC1_MASKCLR);
170 } else {
171 au_writel(1 << bit, IC0_RISINGCLR);
172 au_writel(1 << bit, IC0_MASKCLR);
173 }
174 au_sync();
175}
176
177
178static inline void mask_and_ack_fall_edge_irq(unsigned int irq_nr)
179{
180 unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
181
182 if (bit >= 32) {
183 au_writel(1 << (bit - 32), IC1_FALLINGCLR);
184 au_writel(1 << (bit - 32), IC1_MASKCLR);
185 } else {
186 au_writel(1 << bit, IC0_FALLINGCLR);
187 au_writel(1 << bit, IC0_MASKCLR);
188 }
189 au_sync();
190}
191
192
193static inline void mask_and_ack_either_edge_irq(unsigned int irq_nr)
194{
195 unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
196
197 /*
198 * This may assume that we don't get interrupts from
199 * both edges at once, or if we do, that we don't care.
200 */
201 if (bit >= 32) {
202 au_writel(1 << (bit - 32), IC1_FALLINGCLR);
203 au_writel(1 << (bit - 32), IC1_RISINGCLR);
204 au_writel(1 << (bit - 32), IC1_MASKCLR);
205 } else {
206 au_writel(1 << bit, IC0_FALLINGCLR);
207 au_writel(1 << bit, IC0_RISINGCLR);
208 au_writel(1 << bit, IC0_MASKCLR);
209 }
210 au_sync();
211}
212
213static inline void mask_and_ack_level_irq(unsigned int irq_nr)
214{
215 local_disable_irq(irq_nr);
216 au_sync();
217#if defined(CONFIG_MIPS_PB1000)
218 if (irq_nr == AU1000_GPIO_15) {
219 au_writel(0x8000, PB1000_MDR); /* ack int */
220 au_sync();
221 }
222#endif
223}
224
225static void end_irq(unsigned int irq_nr)
226{
227 if (!(irq_desc[irq_nr].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
228 local_enable_irq(irq_nr);
229
230#if defined(CONFIG_MIPS_PB1000)
231 if (irq_nr == AU1000_GPIO_15) {
232 au_writel(0x4000, PB1000_MDR); /* enable int */
233 au_sync();
234 }
235#endif
236}
237
238unsigned long save_local_and_disable(int controller)
239{
240 int i;
241 unsigned long flags, mask;
242
243 spin_lock_irqsave(&irq_lock, flags);
244 if (controller) {
245 mask = au_readl(IC1_MASKSET);
246 for (i = 32; i < 64; i++)
247 local_disable_irq(i);
248 } else {
249 mask = au_readl(IC0_MASKSET);
250 for (i = 0; i < 32; i++)
251 local_disable_irq(i);
252 }
253 spin_unlock_irqrestore(&irq_lock, flags);
254
255 return mask;
256}
257
258void restore_local_and_enable(int controller, unsigned long mask)
259{
260 int i;
261 unsigned long flags, new_mask;
262
263 spin_lock_irqsave(&irq_lock, flags);
264 for (i = 0; i < 32; i++)
265 if (mask & (1 << i)) {
266 if (controller)
267 local_enable_irq(i + 32);
268 else
269 local_enable_irq(i);
270 }
271
272 if (controller)
273 new_mask = au_readl(IC1_MASKSET);
274 else
275 new_mask = au_readl(IC0_MASKSET);
276
277 spin_unlock_irqrestore(&irq_lock, flags);
278}
279
280
281static struct irq_chip rise_edge_irq_type = {
282 .name = "Au1000 Rise Edge",
283 .ack = mask_and_ack_rise_edge_irq,
284 .mask = local_disable_irq,
285 .mask_ack = mask_and_ack_rise_edge_irq,
286 .unmask = local_enable_irq,
287 .end = end_irq,
288};
289
290static struct irq_chip fall_edge_irq_type = {
291 .name = "Au1000 Fall Edge",
292 .ack = mask_and_ack_fall_edge_irq,
293 .mask = local_disable_irq,
294 .mask_ack = mask_and_ack_fall_edge_irq,
295 .unmask = local_enable_irq,
296 .end = end_irq,
297};
298
299static struct irq_chip either_edge_irq_type = {
300 .name = "Au1000 Rise or Fall Edge",
301 .ack = mask_and_ack_either_edge_irq,
302 .mask = local_disable_irq,
303 .mask_ack = mask_and_ack_either_edge_irq,
304 .unmask = local_enable_irq,
305 .end = end_irq,
306};
307
308static struct irq_chip level_irq_type = {
309 .name = "Au1000 Level",
310 .ack = mask_and_ack_level_irq,
311 .mask = local_disable_irq,
312 .mask_ack = mask_and_ack_level_irq,
313 .unmask = local_enable_irq,
314 .end = end_irq,
315};
316
317static void __init setup_local_irq(unsigned int irq_nr, int type, int int_req)
318{
319 unsigned int bit = irq_nr - AU1000_INTC0_INT_BASE;
320
321 if (irq_nr > AU1000_MAX_INTR)
322 return;
323
324 /* Config2[n], Config1[n], Config0[n] */
325 if (bit >= 32) {
326 switch (type) {
327 case INTC_INT_RISE_EDGE: /* 0:0:1 */
328 au_writel(1 << (bit - 32), IC1_CFG2CLR);
329 au_writel(1 << (bit - 32), IC1_CFG1CLR);
330 au_writel(1 << (bit - 32), IC1_CFG0SET);
331 set_irq_chip(irq_nr, &rise_edge_irq_type);
332 break;
333 case INTC_INT_FALL_EDGE: /* 0:1:0 */
334 au_writel(1 << (bit - 32), IC1_CFG2CLR);
335 au_writel(1 << (bit - 32), IC1_CFG1SET);
336 au_writel(1 << (bit - 32), IC1_CFG0CLR);
337 set_irq_chip(irq_nr, &fall_edge_irq_type);
338 break;
339 case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
340 au_writel(1 << (bit - 32), IC1_CFG2CLR);
341 au_writel(1 << (bit - 32), IC1_CFG1SET);
342 au_writel(1 << (bit - 32), IC1_CFG0SET);
343 set_irq_chip(irq_nr, &either_edge_irq_type);
344 break;
345 case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
346 au_writel(1 << (bit - 32), IC1_CFG2SET);
347 au_writel(1 << (bit - 32), IC1_CFG1CLR);
348 au_writel(1 << (bit - 32), IC1_CFG0SET);
349 set_irq_chip(irq_nr, &level_irq_type);
350 break;
351 case INTC_INT_LOW_LEVEL: /* 1:1:0 */
352 au_writel(1 << (bit - 32), IC1_CFG2SET);
353 au_writel(1 << (bit - 32), IC1_CFG1SET);
354 au_writel(1 << (bit - 32), IC1_CFG0CLR);
355 set_irq_chip(irq_nr, &level_irq_type);
356 break;
357 case INTC_INT_DISABLED: /* 0:0:0 */
358 au_writel(1 << (bit - 32), IC1_CFG0CLR);
359 au_writel(1 << (bit - 32), IC1_CFG1CLR);
360 au_writel(1 << (bit - 32), IC1_CFG2CLR);
361 break;
362 default: /* disable the interrupt */
363 printk(KERN_WARNING "unexpected int type %d (irq %d)\n",
364 type, irq_nr);
365 au_writel(1 << (bit - 32), IC1_CFG0CLR);
366 au_writel(1 << (bit - 32), IC1_CFG1CLR);
367 au_writel(1 << (bit - 32), IC1_CFG2CLR);
368 return;
369 }
370 if (int_req) /* assign to interrupt request 1 */
371 au_writel(1 << (bit - 32), IC1_ASSIGNCLR);
372 else /* assign to interrupt request 0 */
373 au_writel(1 << (bit - 32), IC1_ASSIGNSET);
374 au_writel(1 << (bit - 32), IC1_SRCSET);
375 au_writel(1 << (bit - 32), IC1_MASKCLR);
376 au_writel(1 << (bit - 32), IC1_WAKECLR);
377 } else {
378 switch (type) {
379 case INTC_INT_RISE_EDGE: /* 0:0:1 */
380 au_writel(1 << bit, IC0_CFG2CLR);
381 au_writel(1 << bit, IC0_CFG1CLR);
382 au_writel(1 << bit, IC0_CFG0SET);
383 set_irq_chip(irq_nr, &rise_edge_irq_type);
384 break;
385 case INTC_INT_FALL_EDGE: /* 0:1:0 */
386 au_writel(1 << bit, IC0_CFG2CLR);
387 au_writel(1 << bit, IC0_CFG1SET);
388 au_writel(1 << bit, IC0_CFG0CLR);
389 set_irq_chip(irq_nr, &fall_edge_irq_type);
390 break;
391 case INTC_INT_RISE_AND_FALL_EDGE: /* 0:1:1 */
392 au_writel(1 << bit, IC0_CFG2CLR);
393 au_writel(1 << bit, IC0_CFG1SET);
394 au_writel(1 << bit, IC0_CFG0SET);
395 set_irq_chip(irq_nr, &either_edge_irq_type);
396 break;
397 case INTC_INT_HIGH_LEVEL: /* 1:0:1 */
398 au_writel(1 << bit, IC0_CFG2SET);
399 au_writel(1 << bit, IC0_CFG1CLR);
400 au_writel(1 << bit, IC0_CFG0SET);
401 set_irq_chip(irq_nr, &level_irq_type);
402 break;
403 case INTC_INT_LOW_LEVEL: /* 1:1:0 */
404 au_writel(1 << bit, IC0_CFG2SET);
405 au_writel(1 << bit, IC0_CFG1SET);
406 au_writel(1 << bit, IC0_CFG0CLR);
407 set_irq_chip(irq_nr, &level_irq_type);
408 break;
409 case INTC_INT_DISABLED: /* 0:0:0 */
410 au_writel(1 << bit, IC0_CFG0CLR);
411 au_writel(1 << bit, IC0_CFG1CLR);
412 au_writel(1 << bit, IC0_CFG2CLR);
413 break;
414 default: /* disable the interrupt */
415 printk(KERN_WARNING "unexpected int type %d (irq %d)\n",
416 type, irq_nr);
417 au_writel(1 << bit, IC0_CFG0CLR);
418 au_writel(1 << bit, IC0_CFG1CLR);
419 au_writel(1 << bit, IC0_CFG2CLR);
420 return;
421 }
422 if (int_req) /* assign to interrupt request 1 */
423 au_writel(1 << bit, IC0_ASSIGNCLR);
424 else /* assign to interrupt request 0 */
425 au_writel(1 << bit, IC0_ASSIGNSET);
426 au_writel(1 << bit, IC0_SRCSET);
427 au_writel(1 << bit, IC0_MASKCLR);
428 au_writel(1 << bit, IC0_WAKECLR);
429 }
430 au_sync();
431}
432
433/*
434 * Interrupts are nested. Even if an interrupt handler is registered
435 * as "fast", we might get another interrupt before we return from
436 * intcX_reqX_irqdispatch().
437 */
438
439static void intc0_req0_irqdispatch(void)
440{
441 static unsigned long intc0_req0;
442 unsigned int bit;
443
444 intc0_req0 |= au_readl(IC0_REQ0INT);
445
446 if (!intc0_req0)
447 return;
448
449#ifdef AU1000_USB_DEV_REQ_INT
450 /*
451 * Because of the tight timing of SETUP token to reply
452 * transactions, the USB devices-side packet complete
453 * interrupt needs the highest priority.
454 */
455 if ((intc0_req0 & (1 << AU1000_USB_DEV_REQ_INT))) {
456 intc0_req0 &= ~(1 << AU1000_USB_DEV_REQ_INT);
457 do_IRQ(AU1000_USB_DEV_REQ_INT);
458 return;
459 }
460#endif
461 bit = __ffs(intc0_req0);
462 intc0_req0 &= ~(1 << bit);
463 do_IRQ(AU1000_INTC0_INT_BASE + bit);
464}
465
466
467static void intc0_req1_irqdispatch(void)
468{
469 static unsigned long intc0_req1;
470 unsigned int bit;
471
472 intc0_req1 |= au_readl(IC0_REQ1INT);
473
474 if (!intc0_req1)
475 return;
476
477 bit = __ffs(intc0_req1);
478 intc0_req1 &= ~(1 << bit);
479 do_IRQ(AU1000_INTC0_INT_BASE + bit);
480}
481
482
483/*
484 * Interrupt Controller 1:
485 * interrupts 32 - 63
486 */
487static void intc1_req0_irqdispatch(void)
488{
489 static unsigned long intc1_req0;
490 unsigned int bit;
491
492 intc1_req0 |= au_readl(IC1_REQ0INT);
493
494 if (!intc1_req0)
495 return;
496
497 bit = __ffs(intc1_req0);
498 intc1_req0 &= ~(1 << bit);
499 do_IRQ(AU1000_INTC1_INT_BASE + bit);
500}
501
502
503static void intc1_req1_irqdispatch(void)
504{
505 static unsigned long intc1_req1;
506 unsigned int bit;
507
508 intc1_req1 |= au_readl(IC1_REQ1INT);
509
510 if (!intc1_req1)
511 return;
512
513 bit = __ffs(intc1_req1);
514 intc1_req1 &= ~(1 << bit);
515 do_IRQ(AU1000_INTC1_INT_BASE + bit);
516}
517
518asmlinkage void plat_irq_dispatch(void)
519{
520 unsigned int pending = read_c0_status() & read_c0_cause();
521
522 if (pending & CAUSEF_IP7)
523 do_IRQ(MIPS_CPU_IRQ_BASE + 7);
524 else if (pending & CAUSEF_IP2)
525 intc0_req0_irqdispatch();
526 else if (pending & CAUSEF_IP3)
527 intc0_req1_irqdispatch();
528 else if (pending & CAUSEF_IP4)
529 intc1_req0_irqdispatch();
530 else if (pending & CAUSEF_IP5)
531 intc1_req1_irqdispatch();
532 else
533 spurious_interrupt();
534}
535
536void __init arch_init_irq(void)
537{
538 int i;
539 struct au1xxx_irqmap *imp;
540 extern struct au1xxx_irqmap au1xxx_irq_map[];
541 extern struct au1xxx_irqmap au1xxx_ic0_map[];
542 extern int au1xxx_nr_irqs;
543 extern int au1xxx_ic0_nr_irqs;
544
545 /*
546 * Initialize interrupt controllers to a safe state.
547 */
548 au_writel(0xffffffff, IC0_CFG0CLR);
549 au_writel(0xffffffff, IC0_CFG1CLR);
550 au_writel(0xffffffff, IC0_CFG2CLR);
551 au_writel(0xffffffff, IC0_MASKCLR);
552 au_writel(0xffffffff, IC0_ASSIGNSET);
553 au_writel(0xffffffff, IC0_WAKECLR);
554 au_writel(0xffffffff, IC0_SRCSET);
555 au_writel(0xffffffff, IC0_FALLINGCLR);
556 au_writel(0xffffffff, IC0_RISINGCLR);
557 au_writel(0x00000000, IC0_TESTBIT);
558
559 au_writel(0xffffffff, IC1_CFG0CLR);
560 au_writel(0xffffffff, IC1_CFG1CLR);
561 au_writel(0xffffffff, IC1_CFG2CLR);
562 au_writel(0xffffffff, IC1_MASKCLR);
563 au_writel(0xffffffff, IC1_ASSIGNSET);
564 au_writel(0xffffffff, IC1_WAKECLR);
565 au_writel(0xffffffff, IC1_SRCSET);
566 au_writel(0xffffffff, IC1_FALLINGCLR);
567 au_writel(0xffffffff, IC1_RISINGCLR);
568 au_writel(0x00000000, IC1_TESTBIT);
569
570 mips_cpu_irq_init();
571
572 /*
573 * Initialize IC0, which is fixed per processor.
574 */
575 imp = au1xxx_ic0_map;
576 for (i = 0; i < au1xxx_ic0_nr_irqs; i++) {
577 setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
578 imp++;
579 }
580
581 /*
582 * Now set up the irq mapping for the board.
583 */
584 imp = au1xxx_irq_map;
585 for (i = 0; i < au1xxx_nr_irqs; i++) {
586 setup_local_irq(imp->im_irq, imp->im_type, imp->im_request);
587 imp++;
588 }
589
590 set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4);
591
592 /* Board specific IRQ initialization.
593 */
594 if (board_init_irq)
595 board_init_irq();
596}
diff --git a/arch/mips/alchemy/common/pci.c b/arch/mips/alchemy/common/pci.c
new file mode 100644
index 000000000000..7866cf50cf99
--- /dev/null
+++ b/arch/mips/alchemy/common/pci.c
@@ -0,0 +1,104 @@
1/*
2 * BRIEF MODULE DESCRIPTION
3 * Alchemy/AMD Au1x00 PCI support.
4 *
5 * Copyright 2001-2003, 2007-2008 MontaVista Software Inc.
6 * Author: MontaVista Software, Inc. <source@mvista.com>
7 *
8 * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
9 *
10 * Support for all devices (greater than 16) added by David Gathright.
11 *
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2 of the License, or (at your
15 * option) any later version.
16 *
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
20 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
23 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * You should have received a copy of the GNU General Public License along
29 * with this program; if not, write to the Free Software Foundation, Inc.,
30 * 675 Mass Ave, Cambridge, MA 02139, USA.
31 */
32
33#include <linux/pci.h>
34#include <linux/kernel.h>
35#include <linux/init.h>
36
37#include <asm/mach-au1x00/au1000.h>
38
39/* TBD */
40static struct resource pci_io_resource = {
41 .start = PCI_IO_START,
42 .end = PCI_IO_END,
43 .name = "PCI IO space",
44 .flags = IORESOURCE_IO
45};
46
47static struct resource pci_mem_resource = {
48 .start = PCI_MEM_START,
49 .end = PCI_MEM_END,
50 .name = "PCI memory space",
51 .flags = IORESOURCE_MEM
52};
53
54extern struct pci_ops au1x_pci_ops;
55
56static struct pci_controller au1x_controller = {
57 .pci_ops = &au1x_pci_ops,
58 .io_resource = &pci_io_resource,
59 .mem_resource = &pci_mem_resource,
60};
61
62#if defined(CONFIG_SOC_AU1500) || defined(CONFIG_SOC_AU1550)
63static unsigned long virt_io_addr;
64#endif
65
66static int __init au1x_pci_setup(void)
67{
68 extern void au1x_pci_cfg_init(void);
69
70#if defined(CONFIG_SOC_AU1500) || defined(CONFIG_SOC_AU1550)
71 virt_io_addr = (unsigned long)ioremap(Au1500_PCI_IO_START,
72 Au1500_PCI_IO_END - Au1500_PCI_IO_START + 1);
73
74 if (!virt_io_addr) {
75 printk(KERN_ERR "Unable to ioremap pci space\n");
76 return 1;
77 }
78 au1x_controller.io_map_base = virt_io_addr;
79
80#ifdef CONFIG_DMA_NONCOHERENT
81 {
82 /*
83 * Set the NC bit in controller for Au1500 pre-AC silicon
84 */
85 u32 prid = read_c0_prid();
86
87 if ((prid & 0xFF000000) == 0x01000000 && prid < 0x01030202) {
88 au_writel((1 << 16) | au_readl(Au1500_PCI_CFG),
89 Au1500_PCI_CFG);
90 printk(KERN_INFO "Non-coherent PCI accesses enabled\n");
91 }
92 }
93#endif
94
95 set_io_port_base(virt_io_addr);
96#endif
97
98 au1x_pci_cfg_init();
99
100 register_pci_controller(&au1x_controller);
101 return 0;
102}
103
104arch_initcall(au1x_pci_setup);
diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c
new file mode 100644
index 000000000000..dc8a67efac28
--- /dev/null
+++ b/arch/mips/alchemy/common/platform.c
@@ -0,0 +1,319 @@
1/*
2 * Platform device support for Au1x00 SoCs.
3 *
4 * Copyright 2004, Matt Porter <mporter@kernel.crashing.org>
5 *
6 * (C) Copyright Embedded Alley Solutions, Inc 2005
7 * Author: Pantelis Antoniou <pantelis@embeddedalley.com>
8 *
9 * This file is licensed under the terms of the GNU General Public
10 * License version 2. This program is licensed "as is" without any
11 * warranty of any kind, whether express or implied.
12 */
13
14#include <linux/dma-mapping.h>
15#include <linux/platform_device.h>
16#include <linux/serial_8250.h>
17#include <linux/init.h>
18
19#include <asm/mach-au1x00/au1xxx.h>
20
21#define PORT(_base, _irq) \
22 { \
23 .iobase = _base, \
24 .membase = (void __iomem *)_base,\
25 .mapbase = CPHYSADDR(_base), \
26 .irq = _irq, \
27 .regshift = 2, \
28 .iotype = UPIO_AU, \
29 .flags = UPF_SKIP_TEST \
30 }
31
32static struct plat_serial8250_port au1x00_uart_data[] = {
33#if defined(CONFIG_SERIAL_8250_AU1X00)
34#if defined(CONFIG_SOC_AU1000)
35 PORT(UART0_ADDR, AU1000_UART0_INT),
36 PORT(UART1_ADDR, AU1000_UART1_INT),
37 PORT(UART2_ADDR, AU1000_UART2_INT),
38 PORT(UART3_ADDR, AU1000_UART3_INT),
39#elif defined(CONFIG_SOC_AU1500)
40 PORT(UART0_ADDR, AU1500_UART0_INT),
41 PORT(UART3_ADDR, AU1500_UART3_INT),
42#elif defined(CONFIG_SOC_AU1100)
43 PORT(UART0_ADDR, AU1100_UART0_INT),
44 PORT(UART1_ADDR, AU1100_UART1_INT),
45 PORT(UART3_ADDR, AU1100_UART3_INT),
46#elif defined(CONFIG_SOC_AU1550)
47 PORT(UART0_ADDR, AU1550_UART0_INT),
48 PORT(UART1_ADDR, AU1550_UART1_INT),
49 PORT(UART3_ADDR, AU1550_UART3_INT),
50#elif defined(CONFIG_SOC_AU1200)
51 PORT(UART0_ADDR, AU1200_UART0_INT),
52 PORT(UART1_ADDR, AU1200_UART1_INT),
53#endif
54#endif /* CONFIG_SERIAL_8250_AU1X00 */
55 { },
56};
57
58static struct platform_device au1xx0_uart_device = {
59 .name = "serial8250",
60 .id = PLAT8250_DEV_AU1X00,
61 .dev = {
62 .platform_data = au1x00_uart_data,
63 },
64};
65
66/* OHCI (USB full speed host controller) */
67static struct resource au1xxx_usb_ohci_resources[] = {
68 [0] = {
69 .start = USB_OHCI_BASE,
70 .end = USB_OHCI_BASE + USB_OHCI_LEN - 1,
71 .flags = IORESOURCE_MEM,
72 },
73 [1] = {
74 .start = AU1000_USB_HOST_INT,
75 .end = AU1000_USB_HOST_INT,
76 .flags = IORESOURCE_IRQ,
77 },
78};
79
80/* The dmamask must be set for OHCI to work */
81static u64 ohci_dmamask = DMA_32BIT_MASK;
82
83static struct platform_device au1xxx_usb_ohci_device = {
84 .name = "au1xxx-ohci",
85 .id = 0,
86 .dev = {
87 .dma_mask = &ohci_dmamask,
88 .coherent_dma_mask = DMA_32BIT_MASK,
89 },
90 .num_resources = ARRAY_SIZE(au1xxx_usb_ohci_resources),
91 .resource = au1xxx_usb_ohci_resources,
92};
93
94/*** AU1100 LCD controller ***/
95
96#ifdef CONFIG_FB_AU1100
97static struct resource au1100_lcd_resources[] = {
98 [0] = {
99 .start = LCD_PHYS_ADDR,
100 .end = LCD_PHYS_ADDR + 0x800 - 1,
101 .flags = IORESOURCE_MEM,
102 },
103 [1] = {
104 .start = AU1100_LCD_INT,
105 .end = AU1100_LCD_INT,
106 .flags = IORESOURCE_IRQ,
107 }
108};
109
110static u64 au1100_lcd_dmamask = DMA_32BIT_MASK;
111
112static struct platform_device au1100_lcd_device = {
113 .name = "au1100-lcd",
114 .id = 0,
115 .dev = {
116 .dma_mask = &au1100_lcd_dmamask,
117 .coherent_dma_mask = DMA_32BIT_MASK,
118 },
119 .num_resources = ARRAY_SIZE(au1100_lcd_resources),
120 .resource = au1100_lcd_resources,
121};
122#endif
123
124#ifdef CONFIG_SOC_AU1200
125/* EHCI (USB high speed host controller) */
126static struct resource au1xxx_usb_ehci_resources[] = {
127 [0] = {
128 .start = USB_EHCI_BASE,
129 .end = USB_EHCI_BASE + USB_EHCI_LEN - 1,
130 .flags = IORESOURCE_MEM,
131 },
132 [1] = {
133 .start = AU1000_USB_HOST_INT,
134 .end = AU1000_USB_HOST_INT,
135 .flags = IORESOURCE_IRQ,
136 },
137};
138
139static u64 ehci_dmamask = DMA_32BIT_MASK;
140
141static struct platform_device au1xxx_usb_ehci_device = {
142 .name = "au1xxx-ehci",
143 .id = 0,
144 .dev = {
145 .dma_mask = &ehci_dmamask,
146 .coherent_dma_mask = DMA_32BIT_MASK,
147 },
148 .num_resources = ARRAY_SIZE(au1xxx_usb_ehci_resources),
149 .resource = au1xxx_usb_ehci_resources,
150};
151
152/* Au1200 UDC (USB gadget controller) */
153static struct resource au1xxx_usb_gdt_resources[] = {
154 [0] = {
155 .start = USB_UDC_BASE,
156 .end = USB_UDC_BASE + USB_UDC_LEN - 1,
157 .flags = IORESOURCE_MEM,
158 },
159 [1] = {
160 .start = AU1200_USB_INT,
161 .end = AU1200_USB_INT,
162 .flags = IORESOURCE_IRQ,
163 },
164};
165
166static struct resource au1xxx_mmc_resources[] = {
167 [0] = {
168 .start = SD0_PHYS_ADDR,
169 .end = SD0_PHYS_ADDR + 0x7ffff,
170 .flags = IORESOURCE_MEM,
171 },
172 [1] = {
173 .start = SD1_PHYS_ADDR,
174 .end = SD1_PHYS_ADDR + 0x7ffff,
175 .flags = IORESOURCE_MEM,
176 },
177 [2] = {
178 .start = AU1200_SD_INT,
179 .end = AU1200_SD_INT,
180 .flags = IORESOURCE_IRQ,
181 }
182};
183
184static u64 udc_dmamask = DMA_32BIT_MASK;
185
186static struct platform_device au1xxx_usb_gdt_device = {
187 .name = "au1xxx-udc",
188 .id = 0,
189 .dev = {
190 .dma_mask = &udc_dmamask,
191 .coherent_dma_mask = DMA_32BIT_MASK,
192 },
193 .num_resources = ARRAY_SIZE(au1xxx_usb_gdt_resources),
194 .resource = au1xxx_usb_gdt_resources,
195};
196
197/* Au1200 UOC (USB OTG controller) */
198static struct resource au1xxx_usb_otg_resources[] = {
199 [0] = {
200 .start = USB_UOC_BASE,
201 .end = USB_UOC_BASE + USB_UOC_LEN - 1,
202 .flags = IORESOURCE_MEM,
203 },
204 [1] = {
205 .start = AU1200_USB_INT,
206 .end = AU1200_USB_INT,
207 .flags = IORESOURCE_IRQ,
208 },
209};
210
211static u64 uoc_dmamask = DMA_32BIT_MASK;
212
213static struct platform_device au1xxx_usb_otg_device = {
214 .name = "au1xxx-uoc",
215 .id = 0,
216 .dev = {
217 .dma_mask = &uoc_dmamask,
218 .coherent_dma_mask = DMA_32BIT_MASK,
219 },
220 .num_resources = ARRAY_SIZE(au1xxx_usb_otg_resources),
221 .resource = au1xxx_usb_otg_resources,
222};
223
224static struct resource au1200_lcd_resources[] = {
225 [0] = {
226 .start = LCD_PHYS_ADDR,
227 .end = LCD_PHYS_ADDR + 0x800 - 1,
228 .flags = IORESOURCE_MEM,
229 },
230 [1] = {
231 .start = AU1200_LCD_INT,
232 .end = AU1200_LCD_INT,
233 .flags = IORESOURCE_IRQ,
234 }
235};
236
237static u64 au1200_lcd_dmamask = DMA_32BIT_MASK;
238
239static struct platform_device au1200_lcd_device = {
240 .name = "au1200-lcd",
241 .id = 0,
242 .dev = {
243 .dma_mask = &au1200_lcd_dmamask,
244 .coherent_dma_mask = DMA_32BIT_MASK,
245 },
246 .num_resources = ARRAY_SIZE(au1200_lcd_resources),
247 .resource = au1200_lcd_resources,
248};
249
250static u64 au1xxx_mmc_dmamask = DMA_32BIT_MASK;
251
252static struct platform_device au1xxx_mmc_device = {
253 .name = "au1xxx-mmc",
254 .id = 0,
255 .dev = {
256 .dma_mask = &au1xxx_mmc_dmamask,
257 .coherent_dma_mask = DMA_32BIT_MASK,
258 },
259 .num_resources = ARRAY_SIZE(au1xxx_mmc_resources),
260 .resource = au1xxx_mmc_resources,
261};
262#endif /* #ifdef CONFIG_SOC_AU1200 */
263
264static struct platform_device au1x00_pcmcia_device = {
265 .name = "au1x00-pcmcia",
266 .id = 0,
267};
268
269/* All Alchemy demoboards with I2C have this #define in their headers */
270#ifdef SMBUS_PSC_BASE
271static struct resource pbdb_smbus_resources[] = {
272 {
273 .start = CPHYSADDR(SMBUS_PSC_BASE),
274 .end = CPHYSADDR(SMBUS_PSC_BASE + 0xfffff),
275 .flags = IORESOURCE_MEM,
276 },
277};
278
279static struct platform_device pbdb_smbus_device = {
280 .name = "au1xpsc_smbus",
281 .id = 0, /* bus number */
282 .num_resources = ARRAY_SIZE(pbdb_smbus_resources),
283 .resource = pbdb_smbus_resources,
284};
285#endif
286
287static struct platform_device *au1xxx_platform_devices[] __initdata = {
288 &au1xx0_uart_device,
289 &au1xxx_usb_ohci_device,
290 &au1x00_pcmcia_device,
291#ifdef CONFIG_FB_AU1100
292 &au1100_lcd_device,
293#endif
294#ifdef CONFIG_SOC_AU1200
295 &au1xxx_usb_ehci_device,
296 &au1xxx_usb_gdt_device,
297 &au1xxx_usb_otg_device,
298 &au1200_lcd_device,
299 &au1xxx_mmc_device,
300#endif
301#ifdef SMBUS_PSC_BASE
302 &pbdb_smbus_device,
303#endif
304};
305
306static int __init au1xxx_platform_init(void)
307{
308 unsigned int uartclk = get_au1x00_uart_baud_base() * 16;
309 int i;
310
311 /* Fill up uartclk. */
312 for (i = 0; au1x00_uart_data[i].flags; i++)
313 au1x00_uart_data[i].uartclk = uartclk;
314
315 return platform_add_devices(au1xxx_platform_devices,
316 ARRAY_SIZE(au1xxx_platform_devices));
317}
318
319arch_initcall(au1xxx_platform_init);
diff --git a/arch/mips/alchemy/common/power.c b/arch/mips/alchemy/common/power.c
new file mode 100644
index 000000000000..bd854a6d1d89
--- /dev/null
+++ b/arch/mips/alchemy/common/power.c
@@ -0,0 +1,465 @@
1/*
2 * BRIEF MODULE DESCRIPTION
3 * Au1xx0 Power Management routines.
4 *
5 * Copyright 2001, 2008 MontaVista Software Inc.
6 * Author: MontaVista Software, Inc. <source@mvista.com>
7 *
8 * Some of the routines are right out of init/main.c, whose
9 * copyrights apply here.
10 *
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
15 *
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
19 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
22 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
23 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * You should have received a copy of the GNU General Public License along
28 * with this program; if not, write to the Free Software Foundation, Inc.,
29 * 675 Mass Ave, Cambridge, MA 02139, USA.
30 */
31
32#include <linux/init.h>
33#include <linux/pm.h>
34#include <linux/sysctl.h>
35#include <linux/jiffies.h>
36
37#include <asm/uaccess.h>
38#include <asm/cacheflush.h>
39#include <asm/mach-au1x00/au1000.h>
40
41#ifdef CONFIG_PM
42
43#define DEBUG 1
44#ifdef DEBUG
45#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __func__, ## args)
46#else
47#define DPRINTK(fmt, args...)
48#endif
49
50static void au1000_calibrate_delay(void);
51
52extern unsigned long save_local_and_disable(int controller);
53extern void restore_local_and_enable(int controller, unsigned long mask);
54extern void local_enable_irq(unsigned int irq_nr);
55
56static DEFINE_SPINLOCK(pm_lock);
57
58/*
59 * We need to save/restore a bunch of core registers that are
60 * either volatile or reset to some state across a processor sleep.
61 * If reading a register doesn't provide a proper result for a
62 * later restore, we have to provide a function for loading that
63 * register and save a copy.
64 *
65 * We only have to save/restore registers that aren't otherwise
66 * done as part of a driver pm_* function.
67 */
68static unsigned int sleep_aux_pll_cntrl;
69static unsigned int sleep_cpu_pll_cntrl;
70static unsigned int sleep_pin_function;
71static unsigned int sleep_uart0_inten;
72static unsigned int sleep_uart0_fifoctl;
73static unsigned int sleep_uart0_linectl;
74static unsigned int sleep_uart0_clkdiv;
75static unsigned int sleep_uart0_enable;
76static unsigned int sleep_usbhost_enable;
77static unsigned int sleep_usbdev_enable;
78static unsigned int sleep_static_memctlr[4][3];
79
80/*
81 * Define this to cause the value you write to /proc/sys/pm/sleep to
82 * set the TOY timer for the amount of time you want to sleep.
83 * This is done mainly for testing, but may be useful in other cases.
84 * The value is number of 32KHz ticks to sleep.
85 */
86#define SLEEP_TEST_TIMEOUT 1
87#ifdef SLEEP_TEST_TIMEOUT
88static int sleep_ticks;
89void wakeup_counter0_set(int ticks);
90#endif
91
92static void save_core_regs(void)
93{
94 extern void save_au1xxx_intctl(void);
95 extern void pm_eth0_shutdown(void);
96
97 /*
98 * Do the serial ports.....these really should be a pm_*
99 * registered function by the driver......but of course the
100 * standard serial driver doesn't understand our Au1xxx
101 * unique registers.
102 */
103 sleep_uart0_inten = au_readl(UART0_ADDR + UART_IER);
104 sleep_uart0_fifoctl = au_readl(UART0_ADDR + UART_FCR);
105 sleep_uart0_linectl = au_readl(UART0_ADDR + UART_LCR);
106 sleep_uart0_clkdiv = au_readl(UART0_ADDR + UART_CLK);
107 sleep_uart0_enable = au_readl(UART0_ADDR + UART_MOD_CNTRL);
108
109 /* Shutdown USB host/device. */
110 sleep_usbhost_enable = au_readl(USB_HOST_CONFIG);
111
112 /* There appears to be some undocumented reset register.... */
113 au_writel(0, 0xb0100004); au_sync();
114 au_writel(0, USB_HOST_CONFIG); au_sync();
115
116 sleep_usbdev_enable = au_readl(USBD_ENABLE);
117 au_writel(0, USBD_ENABLE); au_sync();
118
119 /* Save interrupt controller state. */
120 save_au1xxx_intctl();
121
122 /* Clocks and PLLs. */
123 sleep_aux_pll_cntrl = au_readl(SYS_AUXPLL);
124
125 /*
126 * We don't really need to do this one, but unless we
127 * write it again it won't have a valid value if we
128 * happen to read it.
129 */
130 sleep_cpu_pll_cntrl = au_readl(SYS_CPUPLL);
131
132 sleep_pin_function = au_readl(SYS_PINFUNC);
133
134 /* Save the static memory controller configuration. */
135 sleep_static_memctlr[0][0] = au_readl(MEM_STCFG0);
136 sleep_static_memctlr[0][1] = au_readl(MEM_STTIME0);
137 sleep_static_memctlr[0][2] = au_readl(MEM_STADDR0);
138 sleep_static_memctlr[1][0] = au_readl(MEM_STCFG1);
139 sleep_static_memctlr[1][1] = au_readl(MEM_STTIME1);
140 sleep_static_memctlr[1][2] = au_readl(MEM_STADDR1);
141 sleep_static_memctlr[2][0] = au_readl(MEM_STCFG2);
142 sleep_static_memctlr[2][1] = au_readl(MEM_STTIME2);
143 sleep_static_memctlr[2][2] = au_readl(MEM_STADDR2);
144 sleep_static_memctlr[3][0] = au_readl(MEM_STCFG3);
145 sleep_static_memctlr[3][1] = au_readl(MEM_STTIME3);
146 sleep_static_memctlr[3][2] = au_readl(MEM_STADDR3);
147}
148
149static void restore_core_regs(void)
150{
151 extern void restore_au1xxx_intctl(void);
152 extern void wakeup_counter0_adjust(void);
153
154 au_writel(sleep_aux_pll_cntrl, SYS_AUXPLL); au_sync();
155 au_writel(sleep_cpu_pll_cntrl, SYS_CPUPLL); au_sync();
156 au_writel(sleep_pin_function, SYS_PINFUNC); au_sync();
157
158 /* Restore the static memory controller configuration. */
159 au_writel(sleep_static_memctlr[0][0], MEM_STCFG0);
160 au_writel(sleep_static_memctlr[0][1], MEM_STTIME0);
161 au_writel(sleep_static_memctlr[0][2], MEM_STADDR0);
162 au_writel(sleep_static_memctlr[1][0], MEM_STCFG1);
163 au_writel(sleep_static_memctlr[1][1], MEM_STTIME1);
164 au_writel(sleep_static_memctlr[1][2], MEM_STADDR1);
165 au_writel(sleep_static_memctlr[2][0], MEM_STCFG2);
166 au_writel(sleep_static_memctlr[2][1], MEM_STTIME2);
167 au_writel(sleep_static_memctlr[2][2], MEM_STADDR2);
168 au_writel(sleep_static_memctlr[3][0], MEM_STCFG3);
169 au_writel(sleep_static_memctlr[3][1], MEM_STTIME3);
170 au_writel(sleep_static_memctlr[3][2], MEM_STADDR3);
171
172 /*
173 * Enable the UART if it was enabled before sleep.
174 * I guess I should define module control bits........
175 */
176 if (sleep_uart0_enable & 0x02) {
177 au_writel(0, UART0_ADDR + UART_MOD_CNTRL); au_sync();
178 au_writel(1, UART0_ADDR + UART_MOD_CNTRL); au_sync();
179 au_writel(3, UART0_ADDR + UART_MOD_CNTRL); au_sync();
180 au_writel(sleep_uart0_inten, UART0_ADDR + UART_IER); au_sync();
181 au_writel(sleep_uart0_fifoctl, UART0_ADDR + UART_FCR); au_sync();
182 au_writel(sleep_uart0_linectl, UART0_ADDR + UART_LCR); au_sync();
183 au_writel(sleep_uart0_clkdiv, UART0_ADDR + UART_CLK); au_sync();
184 }
185
186 restore_au1xxx_intctl();
187 wakeup_counter0_adjust();
188}
189
190unsigned long suspend_mode;
191
192void wakeup_from_suspend(void)
193{
194 suspend_mode = 0;
195}
196
197int au_sleep(void)
198{
199 unsigned long wakeup, flags;
200 extern void save_and_sleep(void);
201
202 spin_lock_irqsave(&pm_lock, flags);
203
204 save_core_regs();
205
206 flush_cache_all();
207
208 /**
209 ** The code below is all system dependent and we should probably
210 ** have a function call out of here to set this up. You need
211 ** to configure the GPIO or timer interrupts that will bring
212 ** you out of sleep.
213 ** For testing, the TOY counter wakeup is useful.
214 **/
215#if 0
216 au_writel(au_readl(SYS_PINSTATERD) & ~(1 << 11), SYS_PINSTATERD);
217
218 /* GPIO 6 can cause a wake up event */
219 wakeup = au_readl(SYS_WAKEMSK);
220 wakeup &= ~(1 << 8); /* turn off match20 wakeup */
221 wakeup |= 1 << 6; /* turn on GPIO 6 wakeup */
222#else
223 /* For testing, allow match20 to wake us up. */
224#ifdef SLEEP_TEST_TIMEOUT
225 wakeup_counter0_set(sleep_ticks);
226#endif
227 wakeup = 1 << 8; /* turn on match20 wakeup */
228 wakeup = 0;
229#endif
230 au_writel(1, SYS_WAKESRC); /* clear cause */
231 au_sync();
232 au_writel(wakeup, SYS_WAKEMSK);
233 au_sync();
234
235 save_and_sleep();
236
237 /*
238 * After a wakeup, the cpu vectors back to 0x1fc00000, so
239 * it's up to the boot code to get us back here.
240 */
241 restore_core_regs();
242 spin_unlock_irqrestore(&pm_lock, flags);
243 return 0;
244}
245
246static int pm_do_sleep(ctl_table *ctl, int write, struct file *file,
247 void __user *buffer, size_t *len, loff_t *ppos)
248{
249#ifdef SLEEP_TEST_TIMEOUT
250#define TMPBUFLEN2 16
251 char buf[TMPBUFLEN2], *p;
252#endif
253
254 if (!write)
255 *len = 0;
256 else {
257#ifdef SLEEP_TEST_TIMEOUT
258 if (*len > TMPBUFLEN2 - 1)
259 return -EFAULT;
260 if (copy_from_user(buf, buffer, *len))
261 return -EFAULT;
262 buf[*len] = 0;
263 p = buf;
264 sleep_ticks = simple_strtoul(p, &p, 0);
265#endif
266
267 au_sleep();
268 }
269 return 0;
270}
271
272static int pm_do_freq(ctl_table *ctl, int write, struct file *file,
273 void __user *buffer, size_t *len, loff_t *ppos)
274{
275 int retval = 0, i;
276 unsigned long val, pll;
277#define TMPBUFLEN 64
278#define MAX_CPU_FREQ 396
279 char buf[TMPBUFLEN], *p;
280 unsigned long flags, intc0_mask, intc1_mask;
281 unsigned long old_baud_base, old_cpu_freq, old_clk, old_refresh;
282 unsigned long new_baud_base, new_cpu_freq, new_clk, new_refresh;
283 unsigned long baud_rate;
284
285 spin_lock_irqsave(&pm_lock, flags);
286 if (!write)
287 *len = 0;
288 else {
289 /* Parse the new frequency */
290 if (*len > TMPBUFLEN - 1) {
291 spin_unlock_irqrestore(&pm_lock, flags);
292 return -EFAULT;
293 }
294 if (copy_from_user(buf, buffer, *len)) {
295 spin_unlock_irqrestore(&pm_lock, flags);
296 return -EFAULT;
297 }
298 buf[*len] = 0;
299 p = buf;
300 val = simple_strtoul(p, &p, 0);
301 if (val > MAX_CPU_FREQ) {
302 spin_unlock_irqrestore(&pm_lock, flags);
303 return -EFAULT;
304 }
305
306 pll = val / 12;
307 if ((pll > 33) || (pll < 7)) { /* 396 MHz max, 84 MHz min */
308 /* Revisit this for higher speed CPUs */
309 spin_unlock_irqrestore(&pm_lock, flags);
310 return -EFAULT;
311 }
312
313 old_baud_base = get_au1x00_uart_baud_base();
314 old_cpu_freq = get_au1x00_speed();
315
316 new_cpu_freq = pll * 12 * 1000000;
317 new_baud_base = (new_cpu_freq / (2 * ((int)(au_readl(SYS_POWERCTRL)
318 & 0x03) + 2) * 16));
319 set_au1x00_speed(new_cpu_freq);
320 set_au1x00_uart_baud_base(new_baud_base);
321
322 old_refresh = au_readl(MEM_SDREFCFG) & 0x1ffffff;
323 new_refresh = ((old_refresh * new_cpu_freq) / old_cpu_freq) |
324 (au_readl(MEM_SDREFCFG) & ~0x1ffffff);
325
326 au_writel(pll, SYS_CPUPLL);
327 au_sync_delay(1);
328 au_writel(new_refresh, MEM_SDREFCFG);
329 au_sync_delay(1);
330
331 for (i = 0; i < 4; i++)
332 if (au_readl(UART_BASE + UART_MOD_CNTRL +
333 i * 0x00100000) == 3) {
334 old_clk = au_readl(UART_BASE + UART_CLK +
335 i * 0x00100000);
336 baud_rate = old_baud_base / old_clk;
337 /*
338 * We won't get an exact baud rate and the error
339 * could be significant enough that our new
340 * calculation will result in a clock that will
341 * give us a baud rate that's too far off from
342 * what we really want.
343 */
344 if (baud_rate > 100000)
345 baud_rate = 115200;
346 else if (baud_rate > 50000)
347 baud_rate = 57600;
348 else if (baud_rate > 30000)
349 baud_rate = 38400;
350 else if (baud_rate > 17000)
351 baud_rate = 19200;
352 else
353 baud_rate = 9600;
354 new_clk = new_baud_base / baud_rate;
355 au_writel(new_clk, UART_BASE + UART_CLK +
356 i * 0x00100000);
357 au_sync_delay(10);
358 }
359 }
360
361 /*
362 * We don't want _any_ interrupts other than match20. Otherwise our
363 * au1000_calibrate_delay() calculation will be off, potentially a lot.
364 */
365 intc0_mask = save_local_and_disable(0);
366 intc1_mask = save_local_and_disable(1);
367 local_enable_irq(AU1000_TOY_MATCH2_INT);
368 spin_unlock_irqrestore(&pm_lock, flags);
369 au1000_calibrate_delay();
370 restore_local_and_enable(0, intc0_mask);
371 restore_local_and_enable(1, intc1_mask);
372
373 return retval;
374}
375
376
377static struct ctl_table pm_table[] = {
378 {
379 .ctl_name = CTL_UNNUMBERED,
380 .procname = "sleep",
381 .data = NULL,
382 .maxlen = 0,
383 .mode = 0600,
384 .proc_handler = &pm_do_sleep
385 },
386 {
387 .ctl_name = CTL_UNNUMBERED,
388 .procname = "freq",
389 .data = NULL,
390 .maxlen = 0,
391 .mode = 0600,
392 .proc_handler = &pm_do_freq
393 },
394 {}
395};
396
397static struct ctl_table pm_dir_table[] = {
398 {
399 .ctl_name = CTL_UNNUMBERED,
400 .procname = "pm",
401 .mode = 0555,
402 .child = pm_table
403 },
404 {}
405};
406
407/*
408 * Initialize power interface
409 */
410static int __init pm_init(void)
411{
412 register_sysctl_table(pm_dir_table);
413 return 0;
414}
415
416__initcall(pm_init);
417
418/*
419 * This is right out of init/main.c
420 */
421
422/*
423 * This is the number of bits of precision for the loops_per_jiffy.
424 * Each bit takes on average 1.5/HZ seconds. This (like the original)
425 * is a little better than 1%.
426 */
427#define LPS_PREC 8
428
429static void au1000_calibrate_delay(void)
430{
431 unsigned long ticks, loopbit;
432 int lps_precision = LPS_PREC;
433
434 loops_per_jiffy = 1 << 12;
435
436 while (loops_per_jiffy <<= 1) {
437 /* Wait for "start of" clock tick */
438 ticks = jiffies;
439 while (ticks == jiffies)
440 /* nothing */ ;
441 /* Go ... */
442 ticks = jiffies;
443 __delay(loops_per_jiffy);
444 ticks = jiffies - ticks;
445 if (ticks)
446 break;
447 }
448
449 /*
450 * Do a binary approximation to get loops_per_jiffy set to be equal
451 * one clock (up to lps_precision bits)
452 */
453 loops_per_jiffy >>= 1;
454 loopbit = loops_per_jiffy;
455 while (lps_precision-- && (loopbit >>= 1)) {
456 loops_per_jiffy |= loopbit;
457 ticks = jiffies;
458 while (ticks == jiffies);
459 ticks = jiffies;
460 __delay(loops_per_jiffy);
461 if (jiffies != ticks) /* longer than 1 tick */
462 loops_per_jiffy &= ~loopbit;
463 }
464}
465#endif /* CONFIG_PM */
diff --git a/arch/mips/alchemy/common/prom.c b/arch/mips/alchemy/common/prom.c
new file mode 100644
index 000000000000..18b310b475ca
--- /dev/null
+++ b/arch/mips/alchemy/common/prom.c
@@ -0,0 +1,146 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * PROM library initialisation code, supports YAMON and U-Boot.
5 *
6 * Copyright 2000-2001, 2006, 2008 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc. <source@mvista.com>
8 *
9 * This file was derived from Carsten Langgaard's
10 * arch/mips/mips-boards/xx files.
11 *
12 * Carsten Langgaard, carstenl@mips.com
13 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
14 *
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License as published by the
17 * Free Software Foundation; either version 2 of the License, or (at your
18 * option) any later version.
19 *
20 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
21 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
22 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
23 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
26 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
27 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 * You should have received a copy of the GNU General Public License along
32 * with this program; if not, write to the Free Software Foundation, Inc.,
33 * 675 Mass Ave, Cambridge, MA 02139, USA.
34 */
35
36#include <linux/module.h>
37#include <linux/init.h>
38#include <linux/string.h>
39
40#include <asm/bootinfo.h>
41
42int prom_argc;
43char **prom_argv;
44char **prom_envp;
45
46char * __init_or_module prom_getcmdline(void)
47{
48 return &(arcs_cmdline[0]);
49}
50
51void prom_init_cmdline(void)
52{
53 char *cp;
54 int actr;
55
56 actr = 1; /* Always ignore argv[0] */
57
58 cp = &(arcs_cmdline[0]);
59 while (actr < prom_argc) {
60 strcpy(cp, prom_argv[actr]);
61 cp += strlen(prom_argv[actr]);
62 *cp++ = ' ';
63 actr++;
64 }
65 if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */
66 --cp;
67 if (prom_argc > 1)
68 *cp = '\0';
69}
70
71char *prom_getenv(char *envname)
72{
73 /*
74 * Return a pointer to the given environment variable.
75 * YAMON uses "name", "value" pairs, while U-Boot uses "name=value".
76 */
77
78 char **env = prom_envp;
79 int i = strlen(envname);
80 int yamon = (*env && strchr(*env, '=') == NULL);
81
82 while (*env) {
83 if (yamon) {
84 if (strcmp(envname, *env++) == 0)
85 return *env;
86 } else if (strncmp(envname, *env, i) == 0 && (*env)[i] == '=')
87 return *env + i + 1;
88 env++;
89 }
90
91 return NULL;
92}
93
94static inline unsigned char str2hexnum(unsigned char c)
95{
96 if (c >= '0' && c <= '9')
97 return c - '0';
98 if (c >= 'a' && c <= 'f')
99 return c - 'a' + 10;
100 if (c >= 'A' && c <= 'F')
101 return c - 'A' + 10;
102
103 return 0; /* foo */
104}
105
106static inline void str2eaddr(unsigned char *ea, unsigned char *str)
107{
108 int i;
109
110 for (i = 0; i < 6; i++) {
111 unsigned char num;
112
113 if ((*str == '.') || (*str == ':'))
114 str++;
115 num = str2hexnum(*str++) << 4;
116 num |= str2hexnum(*str++);
117 ea[i] = num;
118 }
119}
120
121int prom_get_ethernet_addr(char *ethernet_addr)
122{
123 char *ethaddr_str;
124 char *argptr;
125
126 /* Check the environment variables first */
127 ethaddr_str = prom_getenv("ethaddr");
128 if (!ethaddr_str) {
129 /* Check command line */
130 argptr = prom_getcmdline();
131 ethaddr_str = strstr(argptr, "ethaddr=");
132 if (!ethaddr_str)
133 return -1;
134
135 ethaddr_str += strlen("ethaddr=");
136 }
137
138 str2eaddr(ethernet_addr, ethaddr_str);
139
140 return 0;
141}
142EXPORT_SYMBOL(prom_get_ethernet_addr);
143
144void __init prom_free_prom_memory(void)
145{
146}
diff --git a/arch/mips/alchemy/common/puts.c b/arch/mips/alchemy/common/puts.c
new file mode 100644
index 000000000000..55bbe24d45b6
--- /dev/null
+++ b/arch/mips/alchemy/common/puts.c
@@ -0,0 +1,68 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Low level UART routines to directly access Alchemy UART.
5 *
6 * Copyright 2001, 2008 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc. <source@mvista.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
20 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, write to the Free Software Foundation, Inc.,
27 * 675 Mass Ave, Cambridge, MA 02139, USA.
28 */
29
30#include <asm/mach-au1x00/au1000.h>
31
32#define SERIAL_BASE UART_BASE
33#define SER_CMD 0x7
34#define SER_DATA 0x1
35#define TX_BUSY 0x20
36
37#define TIMEOUT 0xffffff
38#define SLOW_DOWN
39
40static volatile unsigned long * const com1 = (unsigned long *)SERIAL_BASE;
41
42#ifdef SLOW_DOWN
43static inline void slow_down(void)
44{
45 int k;
46
47 for (k = 0; k < 10000; k++);
48}
49#else
50#define slow_down()
51#endif
52
53void
54prom_putchar(const unsigned char c)
55{
56 unsigned char ch;
57 int i = 0;
58
59 do {
60 ch = com1[SER_CMD];
61 slow_down();
62 i++;
63 if (i > TIMEOUT)
64 break;
65 } while (0 == (ch & TX_BUSY));
66
67 com1[SER_DATA] = c;
68}
diff --git a/arch/mips/alchemy/common/reset.c b/arch/mips/alchemy/common/reset.c
new file mode 100644
index 000000000000..d555429c8d6f
--- /dev/null
+++ b/arch/mips/alchemy/common/reset.c
@@ -0,0 +1,189 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Au1xx0 reset routines.
5 *
6 * Copyright 2001, 2006, 2008 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc. <source@mvista.com>
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
20 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, write to the Free Software Foundation, Inc.,
27 * 675 Mass Ave, Cambridge, MA 02139, USA.
28 */
29
30#include <asm/cacheflush.h>
31
32#include <asm/mach-au1x00/au1000.h>
33
34extern int au_sleep(void);
35
36void au1000_restart(char *command)
37{
38 /* Set all integrated peripherals to disabled states */
39 extern void board_reset(void);
40 u32 prid = read_c0_prid();
41
42 printk(KERN_NOTICE "\n** Resetting Integrated Peripherals\n");
43
44 switch (prid & 0xFF000000) {
45 case 0x00000000: /* Au1000 */
46 au_writel(0x02, 0xb0000010); /* ac97_enable */
47 au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
48 asm("sync");
49 au_writel(0x00, 0xb017fffc); /* usbh_enable */
50 au_writel(0x00, 0xb0200058); /* usbd_enable */
51 au_writel(0x00, 0xb0300040); /* ir_enable */
52 au_writel(0x00, 0xb4004104); /* mac dma */
53 au_writel(0x00, 0xb4004114); /* mac dma */
54 au_writel(0x00, 0xb4004124); /* mac dma */
55 au_writel(0x00, 0xb4004134); /* mac dma */
56 au_writel(0x00, 0xb0520000); /* macen0 */
57 au_writel(0x00, 0xb0520004); /* macen1 */
58 au_writel(0x00, 0xb1000008); /* i2s_enable */
59 au_writel(0x00, 0xb1100100); /* uart0_enable */
60 au_writel(0x00, 0xb1200100); /* uart1_enable */
61 au_writel(0x00, 0xb1300100); /* uart2_enable */
62 au_writel(0x00, 0xb1400100); /* uart3_enable */
63 au_writel(0x02, 0xb1600100); /* ssi0_enable */
64 au_writel(0x02, 0xb1680100); /* ssi1_enable */
65 au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
66 au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
67 au_writel(0x00, 0xb1900028); /* sys_clksrc */
68 au_writel(0x10, 0xb1900060); /* sys_cpupll */
69 au_writel(0x00, 0xb1900064); /* sys_auxpll */
70 au_writel(0x00, 0xb1900100); /* sys_pininputen */
71 break;
72 case 0x01000000: /* Au1500 */
73 au_writel(0x02, 0xb0000010); /* ac97_enable */
74 au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
75 asm("sync");
76 au_writel(0x00, 0xb017fffc); /* usbh_enable */
77 au_writel(0x00, 0xb0200058); /* usbd_enable */
78 au_writel(0x00, 0xb4004104); /* mac dma */
79 au_writel(0x00, 0xb4004114); /* mac dma */
80 au_writel(0x00, 0xb4004124); /* mac dma */
81 au_writel(0x00, 0xb4004134); /* mac dma */
82 au_writel(0x00, 0xb1520000); /* macen0 */
83 au_writel(0x00, 0xb1520004); /* macen1 */
84 au_writel(0x00, 0xb1100100); /* uart0_enable */
85 au_writel(0x00, 0xb1400100); /* uart3_enable */
86 au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
87 au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
88 au_writel(0x00, 0xb1900028); /* sys_clksrc */
89 au_writel(0x10, 0xb1900060); /* sys_cpupll */
90 au_writel(0x00, 0xb1900064); /* sys_auxpll */
91 au_writel(0x00, 0xb1900100); /* sys_pininputen */
92 break;
93 case 0x02000000: /* Au1100 */
94 au_writel(0x02, 0xb0000010); /* ac97_enable */
95 au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */
96 asm("sync");
97 au_writel(0x00, 0xb017fffc); /* usbh_enable */
98 au_writel(0x00, 0xb0200058); /* usbd_enable */
99 au_writel(0x00, 0xb0300040); /* ir_enable */
100 au_writel(0x00, 0xb4004104); /* mac dma */
101 au_writel(0x00, 0xb4004114); /* mac dma */
102 au_writel(0x00, 0xb4004124); /* mac dma */
103 au_writel(0x00, 0xb4004134); /* mac dma */
104 au_writel(0x00, 0xb0520000); /* macen0 */
105 au_writel(0x00, 0xb1000008); /* i2s_enable */
106 au_writel(0x00, 0xb1100100); /* uart0_enable */
107 au_writel(0x00, 0xb1200100); /* uart1_enable */
108 au_writel(0x00, 0xb1400100); /* uart3_enable */
109 au_writel(0x02, 0xb1600100); /* ssi0_enable */
110 au_writel(0x02, 0xb1680100); /* ssi1_enable */
111 au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
112 au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
113 au_writel(0x00, 0xb1900028); /* sys_clksrc */
114 au_writel(0x10, 0xb1900060); /* sys_cpupll */
115 au_writel(0x00, 0xb1900064); /* sys_auxpll */
116 au_writel(0x00, 0xb1900100); /* sys_pininputen */
117 break;
118 case 0x03000000: /* Au1550 */
119 au_writel(0x00, 0xb1a00004); /* psc 0 */
120 au_writel(0x00, 0xb1b00004); /* psc 1 */
121 au_writel(0x00, 0xb0a00004); /* psc 2 */
122 au_writel(0x00, 0xb0b00004); /* psc 3 */
123 au_writel(0x00, 0xb017fffc); /* usbh_enable */
124 au_writel(0x00, 0xb0200058); /* usbd_enable */
125 au_writel(0x00, 0xb4004104); /* mac dma */
126 au_writel(0x00, 0xb4004114); /* mac dma */
127 au_writel(0x00, 0xb4004124); /* mac dma */
128 au_writel(0x00, 0xb4004134); /* mac dma */
129 au_writel(0x00, 0xb1520000); /* macen0 */
130 au_writel(0x00, 0xb1520004); /* macen1 */
131 au_writel(0x00, 0xb1100100); /* uart0_enable */
132 au_writel(0x00, 0xb1200100); /* uart1_enable */
133 au_writel(0x00, 0xb1400100); /* uart3_enable */
134 au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */
135 au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */
136 au_writel(0x00, 0xb1900028); /* sys_clksrc */
137 au_writel(0x10, 0xb1900060); /* sys_cpupll */
138 au_writel(0x00, 0xb1900064); /* sys_auxpll */
139 au_writel(0x00, 0xb1900100); /* sys_pininputen */
140 break;
141 }
142
143 set_c0_status(ST0_BEV | ST0_ERL);
144 change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED);
145 flush_cache_all();
146 write_c0_wired(0);
147
148 /* Give board a chance to do a hardware reset */
149 board_reset();
150
151 /* Jump to the beggining in case board_reset() is empty */
152 __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000));
153}
154
155void au1000_halt(void)
156{
157#if defined(CONFIG_MIPS_PB1550) || defined(CONFIG_MIPS_DB1550)
158 /* Power off system */
159 printk(KERN_NOTICE "\n** Powering off...\n");
160 au_writew(au_readw(0xAF00001C) | (3 << 14), 0xAF00001C);
161 au_sync();
162 while (1); /* should not get here */
163#else
164 printk(KERN_NOTICE "\n** You can safely turn off the power\n");
165#ifdef CONFIG_MIPS_MIRAGE
166 au_writel((1 << 26) | (1 << 10), GPIO2_OUTPUT);
167#endif
168#ifdef CONFIG_MIPS_DB1200
169 au_writew(au_readw(0xB980001C) | (1 << 14), 0xB980001C);
170#endif
171#ifdef CONFIG_PM
172 au_sleep();
173
174 /* Should not get here */
175 printk(KERN_ERR "Unable to put CPU in sleep mode\n");
176 while (1);
177#else
178 while (1)
179 __asm__(".set\tmips3\n\t"
180 "wait\n\t"
181 ".set\tmips0");
182#endif
183#endif /* defined(CONFIG_MIPS_PB1550) || defined(CONFIG_MIPS_DB1550) */
184}
185
186void au1000_power_off(void)
187{
188 au1000_halt();
189}
diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c
new file mode 100644
index 000000000000..1ac6b06f42a3
--- /dev/null
+++ b/arch/mips/alchemy/common/setup.c
@@ -0,0 +1,160 @@
1/*
2 * Copyright 2000, 2007-2008 MontaVista Software Inc.
3 * Author: MontaVista Software, Inc. <source@mvista.com
4 *
5 * Updates to 2.6, Pete Popov, Embedded Alley Solutions, Inc.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 *
12 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
13 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
14 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
15 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
16 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
17 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
18 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
19 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
20 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
21 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
22 *
23 * You should have received a copy of the GNU General Public License along
24 * with this program; if not, write to the Free Software Foundation, Inc.,
25 * 675 Mass Ave, Cambridge, MA 02139, USA.
26 */
27
28#include <linux/init.h>
29#include <linux/ioport.h>
30#include <linux/module.h>
31#include <linux/pm.h>
32
33#include <asm/mipsregs.h>
34#include <asm/reboot.h>
35#include <asm/time.h>
36
37#include <au1000.h>
38#include <prom.h>
39
40extern void __init board_setup(void);
41extern void au1000_restart(char *);
42extern void au1000_halt(void);
43extern void au1000_power_off(void);
44extern void set_cpuspec(void);
45
46void __init plat_mem_setup(void)
47{
48 struct cpu_spec *sp;
49 char *argptr;
50 unsigned long prid, cpufreq, bclk;
51
52 set_cpuspec();
53 sp = cur_cpu_spec[0];
54
55 board_setup(); /* board specific setup */
56
57 prid = read_c0_prid();
58 if (sp->cpu_pll_wo)
59#ifdef CONFIG_SOC_AU1000_FREQUENCY
60 cpufreq = CONFIG_SOC_AU1000_FREQUENCY / 1000000;
61#else
62 cpufreq = 396;
63#endif
64 else
65 cpufreq = (au_readl(SYS_CPUPLL) & 0x3F) * 12;
66 printk(KERN_INFO "(PRID %08lx) @ %ld MHz\n", prid, cpufreq);
67
68 if (sp->cpu_bclk) {
69 /* Enable BCLK switching */
70 bclk = au_readl(SYS_POWERCTRL);
71 au_writel(bclk | 0x60, SYS_POWERCTRL);
72 printk(KERN_INFO "BCLK switching enabled!\n");
73 }
74
75 if (sp->cpu_od)
76 /* Various early Au1xx0 errata corrected by this */
77 set_c0_config(1 << 19); /* Set Config[OD] */
78 else
79 /* Clear to obtain best system bus performance */
80 clear_c0_config(1 << 19); /* Clear Config[OD] */
81
82 argptr = prom_getcmdline();
83
84#ifdef CONFIG_SERIAL_8250_CONSOLE
85 argptr = strstr(argptr, "console=");
86 if (argptr == NULL) {
87 argptr = prom_getcmdline();
88 strcat(argptr, " console=ttyS0,115200");
89 }
90#endif
91
92#ifdef CONFIG_FB_AU1100
93 argptr = strstr(argptr, "video=");
94 if (argptr == NULL) {
95 argptr = prom_getcmdline();
96 /* default panel */
97 /*strcat(argptr, " video=au1100fb:panel:Sharp_320x240_16");*/
98 }
99#endif
100
101#if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
102 /* au1000 does not support vra, au1500 and au1100 do */
103 strcat(argptr, " au1000_audio=vra");
104 argptr = prom_getcmdline();
105#endif
106 _machine_restart = au1000_restart;
107 _machine_halt = au1000_halt;
108 pm_power_off = au1000_power_off;
109
110 /* IO/MEM resources. */
111 set_io_port_base(0);
112 ioport_resource.start = IOPORT_RESOURCE_START;
113 ioport_resource.end = IOPORT_RESOURCE_END;
114 iomem_resource.start = IOMEM_RESOURCE_START;
115 iomem_resource.end = IOMEM_RESOURCE_END;
116
117 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_E0S);
118 au_writel(SYS_CNTRL_E0 | SYS_CNTRL_EN0, SYS_COUNTER_CNTRL);
119 au_sync();
120 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S);
121 au_writel(0, SYS_TOYTRIM);
122}
123
124#if defined(CONFIG_64BIT_PHYS_ADDR)
125/* This routine should be valid for all Au1x based boards */
126phys_t __fixup_bigphys_addr(phys_t phys_addr, phys_t size)
127{
128 /* Don't fixup 36-bit addresses */
129 if ((phys_addr >> 32) != 0)
130 return phys_addr;
131
132#ifdef CONFIG_PCI
133 {
134 u32 start = (u32)Au1500_PCI_MEM_START;
135 u32 end = (u32)Au1500_PCI_MEM_END;
136
137 /* Check for PCI memory window */
138 if (phys_addr >= start && (phys_addr + size - 1) <= end)
139 return (phys_t)
140 ((phys_addr - start) + Au1500_PCI_MEM_START);
141 }
142#endif
143
144 /*
145 * All Au1xx0 SOCs have a PCMCIA controller.
146 * We setup our 32-bit pseudo addresses to be equal to the
147 * 36-bit addr >> 4, to make it easier to check the address
148 * and fix it.
149 * The PCMCIA socket 0 physical attribute address is 0xF 4000 0000.
150 * The pseudo address we use is 0xF400 0000. Any address over
151 * 0xF400 0000 is a PCMCIA pseudo address.
152 */
153 if ((phys_addr >= 0xF4000000) && (phys_addr < 0xFFFFFFFF))
154 return (phys_t)(phys_addr << 4);
155
156 /* default nop */
157 return phys_addr;
158}
159EXPORT_SYMBOL(__fixup_bigphys_addr);
160#endif
diff --git a/arch/mips/alchemy/common/sleeper.S b/arch/mips/alchemy/common/sleeper.S
new file mode 100644
index 000000000000..3006e270c8bc
--- /dev/null
+++ b/arch/mips/alchemy/common/sleeper.S
@@ -0,0 +1,154 @@
1/*
2 * Copyright 2002 Embedded Edge, LLC
3 * Author: dan@embeddededge.com
4 *
5 * Sleep helper for Au1xxx sleep mode.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
11 */
12
13#include <asm/asm.h>
14#include <asm/mipsregs.h>
15#include <asm/regdef.h>
16#include <asm/stackframe.h>
17
18 .text
19 .set macro
20 .set noat
21 .align 5
22
23/* Save all of the processor general registers and go to sleep.
24 * A wakeup condition will get us back here to restore the registers.
25 */
26LEAF(save_and_sleep)
27
28 subu sp, PT_SIZE
29 sw $1, PT_R1(sp)
30 sw $2, PT_R2(sp)
31 sw $3, PT_R3(sp)
32 sw $4, PT_R4(sp)
33 sw $5, PT_R5(sp)
34 sw $6, PT_R6(sp)
35 sw $7, PT_R7(sp)
36 sw $8, PT_R8(sp)
37 sw $9, PT_R9(sp)
38 sw $10, PT_R10(sp)
39 sw $11, PT_R11(sp)
40 sw $12, PT_R12(sp)
41 sw $13, PT_R13(sp)
42 sw $14, PT_R14(sp)
43 sw $15, PT_R15(sp)
44 sw $16, PT_R16(sp)
45 sw $17, PT_R17(sp)
46 sw $18, PT_R18(sp)
47 sw $19, PT_R19(sp)
48 sw $20, PT_R20(sp)
49 sw $21, PT_R21(sp)
50 sw $22, PT_R22(sp)
51 sw $23, PT_R23(sp)
52 sw $24, PT_R24(sp)
53 sw $25, PT_R25(sp)
54 sw $26, PT_R26(sp)
55 sw $27, PT_R27(sp)
56 sw $28, PT_R28(sp)
57 sw $29, PT_R29(sp)
58 sw $30, PT_R30(sp)
59 sw $31, PT_R31(sp)
60 mfc0 k0, CP0_STATUS
61 sw k0, 0x20(sp)
62 mfc0 k0, CP0_CONTEXT
63 sw k0, 0x1c(sp)
64 mfc0 k0, CP0_PAGEMASK
65 sw k0, 0x18(sp)
66 mfc0 k0, CP0_CONFIG
67 sw k0, 0x14(sp)
68
69 /* Now set up the scratch registers so the boot rom will
70 * return to this point upon wakeup.
71 */
72 la k0, 1f
73 lui k1, 0xb190
74 ori k1, 0x18
75 sw sp, 0(k1)
76 ori k1, 0x1c
77 sw k0, 0(k1)
78
79/* Put SDRAM into self refresh. Preload instructions into cache,
80 * issue a precharge, then auto refresh, then sleep commands to it.
81 */
82 la t0, sdsleep
83 .set mips3
84 cache 0x14, 0(t0)
85 cache 0x14, 32(t0)
86 cache 0x14, 64(t0)
87 cache 0x14, 96(t0)
88 .set mips0
89
90sdsleep:
91 lui k0, 0xb400
92 sw zero, 0x001c(k0) /* Precharge */
93 sw zero, 0x0020(k0) /* Auto refresh */
94 sw zero, 0x0030(k0) /* SDRAM sleep */
95 sync
96
97 lui k1, 0xb190
98 sw zero, 0x0078(k1) /* get ready to sleep */
99 sync
100 sw zero, 0x007c(k1) /* Put processor to sleep */
101 sync
102
103 /* This is where we return upon wakeup.
104 * Reload all of the registers and return.
105 */
1061: nop
107 lw k0, 0x20(sp)
108 mtc0 k0, CP0_STATUS
109 lw k0, 0x1c(sp)
110 mtc0 k0, CP0_CONTEXT
111 lw k0, 0x18(sp)
112 mtc0 k0, CP0_PAGEMASK
113 lw k0, 0x14(sp)
114 mtc0 k0, CP0_CONFIG
115
116 /* We need to catch the ealry Alchemy SOCs with
117 * the write-only Config[OD] bit and set it back to one...
118 */
119 jal au1x00_fixup_config_od
120 lw $1, PT_R1(sp)
121 lw $2, PT_R2(sp)
122 lw $3, PT_R3(sp)
123 lw $4, PT_R4(sp)
124 lw $5, PT_R5(sp)
125 lw $6, PT_R6(sp)
126 lw $7, PT_R7(sp)
127 lw $8, PT_R8(sp)
128 lw $9, PT_R9(sp)
129 lw $10, PT_R10(sp)
130 lw $11, PT_R11(sp)
131 lw $12, PT_R12(sp)
132 lw $13, PT_R13(sp)
133 lw $14, PT_R14(sp)
134 lw $15, PT_R15(sp)
135 lw $16, PT_R16(sp)
136 lw $17, PT_R17(sp)
137 lw $18, PT_R18(sp)
138 lw $19, PT_R19(sp)
139 lw $20, PT_R20(sp)
140 lw $21, PT_R21(sp)
141 lw $22, PT_R22(sp)
142 lw $23, PT_R23(sp)
143 lw $24, PT_R24(sp)
144 lw $25, PT_R25(sp)
145 lw $26, PT_R26(sp)
146 lw $27, PT_R27(sp)
147 lw $28, PT_R28(sp)
148 lw $29, PT_R29(sp)
149 lw $30, PT_R30(sp)
150 lw $31, PT_R31(sp)
151 addiu sp, PT_SIZE
152
153 jr ra
154END(save_and_sleep)
diff --git a/arch/mips/alchemy/common/time.c b/arch/mips/alchemy/common/time.c
new file mode 100644
index 000000000000..563d9390a872
--- /dev/null
+++ b/arch/mips/alchemy/common/time.c
@@ -0,0 +1,266 @@
1/*
2 *
3 * Copyright (C) 2001, 2006, 2008 MontaVista Software, <source@mvista.com>
4 * Copied and modified Carsten Langgaard's time.c
5 *
6 * Carsten Langgaard, carstenl@mips.com
7 * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
8 *
9 * ########################################################################
10 *
11 * This program is free software; you can distribute it and/or modify it
12 * under the terms of the GNU General Public License (Version 2) as
13 * published by the Free Software Foundation.
14 *
15 * This program is distributed in the hope it will be useful, but WITHOUT
16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 * for more details.
19 *
20 * You should have received a copy of the GNU General Public License along
21 * with this program; if not, write to the Free Software Foundation, Inc.,
22 * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
23 *
24 * ########################################################################
25 *
26 * Setting up the clock on the MIPS boards.
27 *
28 * We provide the clock interrupt processing and the timer offset compute
29 * functions. If CONFIG_PM is selected, we also ensure the 32KHz timer is
30 * available. -- Dan
31 */
32
33#include <linux/types.h>
34#include <linux/init.h>
35#include <linux/spinlock.h>
36
37#include <asm/mipsregs.h>
38#include <asm/time.h>
39#include <asm/mach-au1x00/au1000.h>
40
41static int no_au1xxx_32khz;
42extern int allow_au1k_wait; /* default off for CP0 Counter */
43
44#ifdef CONFIG_PM
45#if HZ < 100 || HZ > 1000
46#error "unsupported HZ value! Must be in [100,1000]"
47#endif
48#define MATCH20_INC (328 * 100 / HZ) /* magic number 328 is for HZ=100... */
49static unsigned long last_pc0, last_match20;
50#endif
51
52static DEFINE_SPINLOCK(time_lock);
53
54unsigned long wtimer;
55
56#ifdef CONFIG_PM
57static irqreturn_t counter0_irq(int irq, void *dev_id)
58{
59 unsigned long pc0;
60 int time_elapsed;
61 static int jiffie_drift;
62
63 if (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_M20) {
64 /* should never happen! */
65 printk(KERN_WARNING "counter 0 w status error\n");
66 return IRQ_NONE;
67 }
68
69 pc0 = au_readl(SYS_TOYREAD);
70 if (pc0 < last_match20)
71 /* counter overflowed */
72 time_elapsed = (0xffffffff - last_match20) + pc0;
73 else
74 time_elapsed = pc0 - last_match20;
75
76 while (time_elapsed > 0) {
77 do_timer(1);
78#ifndef CONFIG_SMP
79 update_process_times(user_mode(get_irq_regs()));
80#endif
81 time_elapsed -= MATCH20_INC;
82 last_match20 += MATCH20_INC;
83 jiffie_drift++;
84 }
85
86 last_pc0 = pc0;
87 au_writel(last_match20 + MATCH20_INC, SYS_TOYMATCH2);
88 au_sync();
89
90 /*
91 * Our counter ticks at 10.009765625 ms/tick, we we're running
92 * almost 10 uS too slow per tick.
93 */
94
95 if (jiffie_drift >= 999) {
96 jiffie_drift -= 999;
97 do_timer(1); /* increment jiffies by one */
98#ifndef CONFIG_SMP
99 update_process_times(user_mode(get_irq_regs()));
100#endif
101 }
102
103 return IRQ_HANDLED;
104}
105
106struct irqaction counter0_action = {
107 .handler = counter0_irq,
108 .flags = IRQF_DISABLED,
109 .name = "alchemy-toy",
110 .dev_id = NULL,
111};
112
113/* When we wakeup from sleep, we have to "catch up" on all of the
114 * timer ticks we have missed.
115 */
116void wakeup_counter0_adjust(void)
117{
118 unsigned long pc0;
119 int time_elapsed;
120
121 pc0 = au_readl(SYS_TOYREAD);
122 if (pc0 < last_match20)
123 /* counter overflowed */
124 time_elapsed = (0xffffffff - last_match20) + pc0;
125 else
126 time_elapsed = pc0 - last_match20;
127
128 while (time_elapsed > 0) {
129 time_elapsed -= MATCH20_INC;
130 last_match20 += MATCH20_INC;
131 }
132
133 last_pc0 = pc0;
134 au_writel(last_match20 + MATCH20_INC, SYS_TOYMATCH2);
135 au_sync();
136
137}
138
139/* This is just for debugging to set the timer for a sleep delay. */
140void wakeup_counter0_set(int ticks)
141{
142 unsigned long pc0;
143
144 pc0 = au_readl(SYS_TOYREAD);
145 last_pc0 = pc0;
146 au_writel(last_match20 + (MATCH20_INC * ticks), SYS_TOYMATCH2);
147 au_sync();
148}
149#endif
150
151/*
152 * I haven't found anyone that doesn't use a 12 MHz source clock,
153 * but just in case.....
154 */
155#define AU1000_SRC_CLK 12000000
156
157/*
158 * We read the real processor speed from the PLL. This is important
159 * because it is more accurate than computing it from the 32 KHz
160 * counter, if it exists. If we don't have an accurate processor
161 * speed, all of the peripherals that derive their clocks based on
162 * this advertised speed will introduce error and sometimes not work
163 * properly. This function is futher convoluted to still allow configurations
164 * to do that in case they have really, really old silicon with a
165 * write-only PLL register, that we need the 32 KHz when power management
166 * "wait" is enabled, and we need to detect if the 32 KHz isn't present
167 * but requested......got it? :-) -- Dan
168 */
169unsigned long calc_clock(void)
170{
171 unsigned long cpu_speed;
172 unsigned long flags;
173 unsigned long counter;
174
175 spin_lock_irqsave(&time_lock, flags);
176
177 /* Power management cares if we don't have a 32 KHz counter. */
178 no_au1xxx_32khz = 0;
179 counter = au_readl(SYS_COUNTER_CNTRL);
180 if (counter & SYS_CNTRL_E0) {
181 int trim_divide = 16;
182
183 au_writel(counter | SYS_CNTRL_EN1, SYS_COUNTER_CNTRL);
184
185 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T1S);
186 /* RTC now ticks at 32.768/16 kHz */
187 au_writel(trim_divide - 1, SYS_RTCTRIM);
188 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T1S);
189
190 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C1S);
191 au_writel(0, SYS_TOYWRITE);
192 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C1S);
193 } else
194 no_au1xxx_32khz = 1;
195
196 /*
197 * On early Au1000, sys_cpupll was write-only. Since these
198 * silicon versions of Au1000 are not sold by AMD, we don't bend
199 * over backwards trying to determine the frequency.
200 */
201 if (cur_cpu_spec[0]->cpu_pll_wo)
202#ifdef CONFIG_SOC_AU1000_FREQUENCY
203 cpu_speed = CONFIG_SOC_AU1000_FREQUENCY;
204#else
205 cpu_speed = 396000000;
206#endif
207 else
208 cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) * AU1000_SRC_CLK;
209 /* On Alchemy CPU:counter ratio is 1:1 */
210 mips_hpt_frequency = cpu_speed;
211 /* Equation: Baudrate = CPU / (SD * 2 * CLKDIV * 16) */
212 set_au1x00_uart_baud_base(cpu_speed / (2 * ((int)(au_readl(SYS_POWERCTRL)
213 & 0x03) + 2) * 16));
214 spin_unlock_irqrestore(&time_lock, flags);
215 return cpu_speed;
216}
217
218void __init plat_time_init(void)
219{
220 unsigned int est_freq = calc_clock();
221
222 est_freq += 5000; /* round */
223 est_freq -= est_freq%10000;
224 printk(KERN_INFO "CPU frequency %u.%02u MHz\n",
225 est_freq / 1000000, ((est_freq % 1000000) * 100) / 1000000);
226 set_au1x00_speed(est_freq);
227 set_au1x00_lcd_clock(); /* program the LCD clock */
228
229#ifdef CONFIG_PM
230 /*
231 * setup counter 0, since it keeps ticking after a
232 * 'wait' instruction has been executed. The CP0 timer and
233 * counter 1 do NOT continue running after 'wait'
234 *
235 * It's too early to call request_irq() here, so we handle
236 * counter 0 interrupt as a special irq and it doesn't show
237 * up under /proc/interrupts.
238 *
239 * Check to ensure we really have a 32 KHz oscillator before
240 * we do this.
241 */
242 if (no_au1xxx_32khz)
243 printk(KERN_WARNING "WARNING: no 32KHz clock found.\n");
244 else {
245 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S);
246 au_writel(0, SYS_TOYWRITE);
247 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_C0S);
248
249 au_writel(au_readl(SYS_WAKEMSK) | (1 << 8), SYS_WAKEMSK);
250 au_writel(~0, SYS_WAKESRC);
251 au_sync();
252 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_M20);
253
254 /* Setup match20 to interrupt once every HZ */
255 last_pc0 = last_match20 = au_readl(SYS_TOYREAD);
256 au_writel(last_match20 + MATCH20_INC, SYS_TOYMATCH2);
257 au_sync();
258 while (au_readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_M20);
259 setup_irq(AU1000_TOY_MATCH2_INT, &counter0_action);
260
261 /* We can use the real 'wait' instruction. */
262 allow_au1k_wait = 1;
263 }
264
265#endif
266}
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