4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
8 * Copyright (C) 2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
11 #include <linux/init.h>
12 #include <linux/interrupt.h>
13 #include <linux/irq.h>
14 #include <linux/platform_device.h>
15 #include <linux/serial_8250.h>
20 #define PORT(_base,_irq) \
25 .iotype = UPIO_PORT, \
26 .flags = UPF_BOOT_AUTOCONF, \
29 static struct plat_serial8250_port a20r_data[] = {
35 static struct platform_device a20r_serial8250_device = {
37 .id = PLAT8250_DEV_PLATFORM,
39 .platform_data = a20r_data,
43 static struct resource a20r_ds1216_rsrc[] = {
47 .flags = IORESOURCE_MEM
51 static struct platform_device a20r_ds1216_device = {
53 .num_resources = ARRAY_SIZE(a20r_ds1216_rsrc),
54 .resource = a20r_ds1216_rsrc
57 static struct resource snirm_82596_rsrc[] = {
61 .flags = IORESOURCE_MEM
66 .flags = IORESOURCE_MEM
71 .flags = IORESOURCE_MEM
76 .flags = IORESOURCE_IRQ
79 .flags = 0x01 /* 16bit mpu port access */
83 static struct platform_device snirm_82596_pdev = {
84 .name = "snirm_82596",
85 .num_resources = ARRAY_SIZE(snirm_82596_rsrc),
86 .resource = snirm_82596_rsrc
89 static struct resource snirm_53c710_rsrc[] = {
93 .flags = IORESOURCE_MEM
98 .flags = IORESOURCE_IRQ
102 static struct platform_device snirm_53c710_pdev = {
103 .name = "snirm_53c710",
104 .num_resources = ARRAY_SIZE(snirm_53c710_rsrc),
105 .resource = snirm_53c710_rsrc
108 static struct resource sc26xx_rsrc[] = {
112 .flags = IORESOURCE_MEM
117 .flags = IORESOURCE_IRQ
121 static unsigned int sc26xx_data[2] = {
122 /* DTR | RTS | DSR | CTS | DCD | RI */
123 (8 << 0) | (4 << 4) | (6 << 8) | (0 << 12) | (6 << 16) | (0 << 20),
124 (3 << 0) | (2 << 4) | (1 << 8) | (2 << 12) | (3 << 16) | (4 << 20)
127 static struct platform_device sc26xx_pdev = {
129 .num_resources = ARRAY_SIZE(sc26xx_rsrc),
130 .resource = sc26xx_rsrc,
132 .platform_data = sc26xx_data,
136 static u32 a20r_ack_hwint(void)
138 u32 status = read_c0_status();
140 write_c0_status(status | 0x00010000);
165 : "Jr" (PCIMT_UCONF), "Jr" (0xbc000000));
166 write_c0_status(status);
171 static inline void unmask_a20r_irq(struct irq_data *d)
173 set_c0_status(0x100 << (d->irq - SNI_A20R_IRQ_BASE));
177 static inline void mask_a20r_irq(struct irq_data *d)
179 clear_c0_status(0x100 << (d->irq - SNI_A20R_IRQ_BASE));
180 irq_disable_hazard();
183 static struct irq_chip a20r_irq_type = {
185 .irq_mask = mask_a20r_irq,
186 .irq_unmask = unmask_a20r_irq,
190 * hwint 0 receive all interrupts
192 static void a20r_hwint(void)
197 clear_c0_status(IE_IRQ0);
198 status = a20r_ack_hwint();
199 cause = read_c0_cause();
201 irq = ffs(((cause & status) >> 8) & 0xf8);
203 do_IRQ(SNI_A20R_IRQ_BASE + irq - 1);
204 set_c0_status(IE_IRQ0);
207 void __init sni_a20r_irq_init(void)
211 for (i = SNI_A20R_IRQ_BASE + 2 ; i < SNI_A20R_IRQ_BASE + 8; i++)
212 irq_set_chip_and_handler(i, &a20r_irq_type, handle_level_irq);
213 sni_hwint = a20r_hwint;
214 change_c0_status(ST0_IM, IE_IRQ0);
215 setup_irq(SNI_A20R_IRQ_BASE + 3, &sni_isa_irq);
218 void sni_a20r_init(void)
220 /* FIXME, remove if not needed */
223 static int __init snirm_a20r_setup_devinit(void)
225 switch (sni_brd_type) {
226 case SNI_BRD_TOWER_OASIC:
227 case SNI_BRD_MINITOWER:
228 platform_device_register(&snirm_82596_pdev);
229 platform_device_register(&snirm_53c710_pdev);
230 platform_device_register(&sc26xx_pdev);
231 platform_device_register(&a20r_serial8250_device);
232 platform_device_register(&a20r_ds1216_device);
233 sni_eisa_root_init();
239 device_initcall(snirm_a20r_setup_devinit);