--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
-@@ -96,6 +96,19 @@ config AR7
+@@ -96,6 +96,20 @@ config AR7
Support for the Texas Instruments AR7 System-on-a-Chip
family: TNETD7100, 7200 and 7300.
+ select CSRC_R4K
+ select DMA_NONCOHERENT
+ select IRQ_CPU
++ select IRQ_DOMAIN
+ select SYS_HAS_CPU_MIPS32_R1
+ select SYS_SUPPORTS_BIG_ENDIAN
+ select SYS_SUPPORTS_32BIT_KERNEL
config ATH79
bool "Atheros AR71XX/AR724X/AR913X based boards"
select ARCH_REQUIRE_GPIOLIB
-@@ -834,6 +847,7 @@ config MIPS_PARAVIRT
+@@ -834,6 +848,7 @@ config MIPS_PARAVIRT
endchoice
+/*
+ * Miscellaneous interrupts, which share IP2.
+ */
-+#define AR2315_MISC_IRQ_UART0 (AR231X_MISC_IRQ_BASE+0)
-+#define AR2315_MISC_IRQ_I2C_RSVD (AR231X_MISC_IRQ_BASE+1)
-+#define AR2315_MISC_IRQ_SPI (AR231X_MISC_IRQ_BASE+2)
-+#define AR2315_MISC_IRQ_AHB (AR231X_MISC_IRQ_BASE+3)
-+#define AR2315_MISC_IRQ_APB (AR231X_MISC_IRQ_BASE+4)
-+#define AR2315_MISC_IRQ_TIMER (AR231X_MISC_IRQ_BASE+5)
-+#define AR2315_MISC_IRQ_GPIO (AR231X_MISC_IRQ_BASE+6)
-+#define AR2315_MISC_IRQ_WATCHDOG (AR231X_MISC_IRQ_BASE+7)
-+#define AR2315_MISC_IRQ_IR_RSVD (AR231X_MISC_IRQ_BASE+8)
++#define AR2315_MISC_IRQ_UART0 0
++#define AR2315_MISC_IRQ_I2C_RSVD 1
++#define AR2315_MISC_IRQ_SPI 2
++#define AR2315_MISC_IRQ_AHB 3
++#define AR2315_MISC_IRQ_APB 4
++#define AR2315_MISC_IRQ_TIMER 5
++#define AR2315_MISC_IRQ_GPIO 6
++#define AR2315_MISC_IRQ_WATCHDOG 7
++#define AR2315_MISC_IRQ_IR_RSVD 8
+#define AR2315_MISC_IRQ_COUNT 9
+
+/*
+/*
+ * Miscellaneous interrupts, which share IP6.
+ */
-+#define AR5312_MISC_IRQ_TIMER (AR231X_MISC_IRQ_BASE+0)
-+#define AR5312_MISC_IRQ_AHB_PROC (AR231X_MISC_IRQ_BASE+1)
-+#define AR5312_MISC_IRQ_AHB_DMA (AR231X_MISC_IRQ_BASE+2)
-+#define AR5312_MISC_IRQ_GPIO (AR231X_MISC_IRQ_BASE+3)
-+#define AR5312_MISC_IRQ_UART0 (AR231X_MISC_IRQ_BASE+4)
-+#define AR5312_MISC_IRQ_UART0_DMA (AR231X_MISC_IRQ_BASE+5)
-+#define AR5312_MISC_IRQ_WATCHDOG (AR231X_MISC_IRQ_BASE+6)
-+#define AR5312_MISC_IRQ_LOCAL (AR231X_MISC_IRQ_BASE+7)
-+#define AR5312_MISC_IRQ_SPI (AR231X_MISC_IRQ_BASE+8)
++#define AR5312_MISC_IRQ_TIMER 0
++#define AR5312_MISC_IRQ_AHB_PROC 1
++#define AR5312_MISC_IRQ_AHB_DMA 2
++#define AR5312_MISC_IRQ_GPIO 3
++#define AR5312_MISC_IRQ_UART0 4
++#define AR5312_MISC_IRQ_UART0_DMA 5
++#define AR5312_MISC_IRQ_WATCHDOG 6
++#define AR5312_MISC_IRQ_LOCAL 7
++#define AR5312_MISC_IRQ_SPI 8
+#define AR5312_MISC_IRQ_COUNT 9
+
+/*
+#endif /* __ASM_MACH_ATH25_AR5312_REGS_H */
--- /dev/null
+++ b/arch/mips/ath25/ar5312.c
-@@ -0,0 +1,474 @@
+@@ -0,0 +1,492 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+#include <linux/mtd/physmap.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
++#include <linux/bitops.h>
++#include <linux/irqdomain.h>
+#include <linux/reboot.h>
+#include <linux/leds.h>
+#include <linux/gpio.h>
+#include "ar5312_regs.h"
+
+static void __iomem *ar5312_rst_base;
++static struct irq_domain *ar5312_misc_irq_domain;
+
+static inline u32 ar5312_rst_reg_read(u32 reg)
+{
+
+static void ar5312_misc_irq_handler(unsigned irq, struct irq_desc *desc)
+{
-+ unsigned int ar231x_misc_intrs = ar5312_rst_reg_read(AR5312_ISR) &
-+ ar5312_rst_reg_read(AR5312_IMR);
-+
-+ if (ar231x_misc_intrs & AR5312_ISR_TIMER) {
-+ generic_handle_irq(AR5312_MISC_IRQ_TIMER);
-+ (void)ar5312_rst_reg_read(AR5312_TIMER);
-+ } else if (ar231x_misc_intrs & AR5312_ISR_AHBPROC)
-+ generic_handle_irq(AR5312_MISC_IRQ_AHB_PROC);
-+ else if ((ar231x_misc_intrs & AR5312_ISR_UART0))
-+ generic_handle_irq(AR5312_MISC_IRQ_UART0);
-+ else if (ar231x_misc_intrs & AR5312_ISR_WD)
-+ generic_handle_irq(AR5312_MISC_IRQ_WATCHDOG);
-+ else
++ u32 pending = ar5312_rst_reg_read(AR5312_ISR) &
++ ar5312_rst_reg_read(AR5312_IMR);
++ unsigned nr, misc_irq = 0;
++
++ if (pending) {
++ struct irq_domain *domain = irq_get_handler_data(irq);
++
++ nr = __ffs(pending);
++ misc_irq = irq_find_mapping(domain, nr);
++ }
++
++ if (misc_irq) {
++ generic_handle_irq(misc_irq);
++ if (nr == AR5312_MISC_IRQ_TIMER)
++ ar5312_rst_reg_read(AR5312_TIMER);
++ } else {
+ spurious_interrupt();
++ }
+}
+
+/* Enable the specified AR5312_MISC_IRQ interrupt */
+static void ar5312_misc_irq_unmask(struct irq_data *d)
+{
-+ unsigned int imr;
-+
-+ imr = ar5312_rst_reg_read(AR5312_IMR);
-+ imr |= 1 << (d->irq - AR231X_MISC_IRQ_BASE);
-+ ar5312_rst_reg_write(AR5312_IMR, imr);
++ ar5312_rst_reg_mask(AR5312_IMR, 0, BIT(d->hwirq));
+}
+
+/* Disable the specified AR5312_MISC_IRQ interrupt */
+static void ar5312_misc_irq_mask(struct irq_data *d)
+{
-+ unsigned int imr;
-+
-+ imr = ar5312_rst_reg_read(AR5312_IMR);
-+ imr &= ~(1 << (d->irq - AR231X_MISC_IRQ_BASE));
-+ ar5312_rst_reg_write(AR5312_IMR, imr);
++ ar5312_rst_reg_mask(AR5312_IMR, BIT(d->hwirq), 0);
+ ar5312_rst_reg_read(AR5312_IMR); /* flush write buffer */
+}
+
+ .irq_mask = ar5312_misc_irq_mask,
+};
+
++static int ar5312_misc_irq_map(struct irq_domain *d, unsigned irq,
++ irq_hw_number_t hw)
++{
++ irq_set_chip_and_handler(irq, &ar5312_misc_irq_chip, handle_level_irq);
++ return 0;
++}
++
++static struct irq_domain_ops ar5312_misc_irq_domain_ops = {
++ .map = ar5312_misc_irq_map,
++};
++
+static void ar5312_irq_dispatch(void)
+{
-+ int pending = read_c0_status() & read_c0_cause();
++ u32 pending = read_c0_status() & read_c0_cause();
+
+ if (pending & CAUSEF_IP2)
+ do_IRQ(AR5312_IRQ_WLAN0);
+
+void __init ar5312_arch_init_irq(void)
+{
-+ int i;
++ struct irq_domain *domain;
++ unsigned irq;
+
+ ath25_irq_dispatch = ar5312_irq_dispatch;
-+ for (i = 0; i < AR5312_MISC_IRQ_COUNT; i++) {
-+ int irq = AR231X_MISC_IRQ_BASE + i;
+
-+ irq_set_chip_and_handler(irq, &ar5312_misc_irq_chip,
-+ handle_level_irq);
-+ }
-+ setup_irq(AR5312_MISC_IRQ_AHB_PROC, &ar5312_ahb_err_interrupt);
++ domain = irq_domain_add_linear(NULL, AR5312_MISC_IRQ_COUNT,
++ &ar5312_misc_irq_domain_ops, NULL);
++ if (!domain)
++ panic("Failed to add IRQ domain");
++
++ irq = irq_create_mapping(domain, AR5312_MISC_IRQ_AHB_PROC);
++ setup_irq(irq, &ar5312_ahb_err_interrupt);
++
+ irq_set_chained_handler(AR5312_IRQ_MISC, ar5312_misc_irq_handler);
++ irq_set_handler_data(AR5312_IRQ_MISC, domain);
++
++ ar5312_misc_irq_domain = domain;
+}
+
+static void ar5312_device_reset_set(u32 mask)
+
+void __init ar5312_arch_init(void)
+{
-+ ath25_serial_setup(AR5312_UART0_BASE, AR5312_MISC_IRQ_UART0,
-+ ar5312_sys_frequency());
++ unsigned irq = irq_create_mapping(ar5312_misc_irq_domain,
++ AR5312_MISC_IRQ_UART0);
++
++ ath25_serial_setup(AR5312_UART0_BASE, irq, ar5312_sys_frequency());
+}
--- /dev/null
+++ b/arch/mips/ath25/ar2315.c
-@@ -0,0 +1,418 @@
+@@ -0,0 +1,438 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+#include <linux/string.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
++#include <linux/bitops.h>
++#include <linux/irqdomain.h>
+#include <linux/reboot.h>
+#include <linux/delay.h>
+#include <linux/leds.h>
+#include "ar2315_regs.h"
+
+static void __iomem *ar2315_rst_base;
++static struct irq_domain *ar2315_misc_irq_domain;
+
+static inline u32 ar2315_rst_reg_read(u32 reg)
+{
+
+static void ar2315_misc_irq_handler(unsigned irq, struct irq_desc *desc)
+{
-+ unsigned int misc_intr = ar2315_rst_reg_read(AR2315_ISR) &
-+ ar2315_rst_reg_read(AR2315_IMR);
-+
-+ if (misc_intr & AR2315_ISR_SPI)
-+ generic_handle_irq(AR2315_MISC_IRQ_SPI);
-+ else if (misc_intr & AR2315_ISR_TIMER)
-+ generic_handle_irq(AR2315_MISC_IRQ_TIMER);
-+ else if (misc_intr & AR2315_ISR_AHB)
-+ generic_handle_irq(AR2315_MISC_IRQ_AHB);
-+ else if (misc_intr & AR2315_ISR_GPIO) {
-+ ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_GPIO);
-+ generic_handle_irq(AR2315_MISC_IRQ_GPIO);
-+ } else if (misc_intr & AR2315_ISR_UART0)
-+ generic_handle_irq(AR2315_MISC_IRQ_UART0);
-+ else if (misc_intr & AR2315_ISR_WD) {
-+ ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_WD);
-+ generic_handle_irq(AR2315_MISC_IRQ_WATCHDOG);
-+ } else
++ u32 pending = ar2315_rst_reg_read(AR2315_ISR) &
++ ar2315_rst_reg_read(AR2315_IMR);
++ unsigned nr, misc_irq = 0;
++
++ if (pending) {
++ struct irq_domain *domain = irq_get_handler_data(irq);
++
++ nr = __ffs(pending);
++ misc_irq = irq_find_mapping(domain, nr);
++ }
++
++ if (misc_irq) {
++ if (nr == AR2315_MISC_IRQ_GPIO)
++ ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_GPIO);
++ else if (nr == AR2315_MISC_IRQ_WATCHDOG)
++ ar2315_rst_reg_write(AR2315_ISR, AR2315_ISR_WD);
++ generic_handle_irq(misc_irq);
++ } else {
+ spurious_interrupt();
++ }
+}
+
+static void ar2315_misc_irq_unmask(struct irq_data *d)
+{
-+ unsigned int imr;
-+
-+ imr = ar2315_rst_reg_read(AR2315_IMR);
-+ imr |= 1 << (d->irq - AR231X_MISC_IRQ_BASE);
-+ ar2315_rst_reg_write(AR2315_IMR, imr);
++ ar2315_rst_reg_mask(AR2315_IMR, 0, BIT(d->hwirq));
+}
+
+static void ar2315_misc_irq_mask(struct irq_data *d)
+{
-+ unsigned int imr;
-+
-+ imr = ar2315_rst_reg_read(AR2315_IMR);
-+ imr &= ~(1 << (d->irq - AR231X_MISC_IRQ_BASE));
-+ ar2315_rst_reg_write(AR2315_IMR, imr);
++ ar2315_rst_reg_mask(AR2315_IMR, BIT(d->hwirq), 0);
+}
+
+static struct irq_chip ar2315_misc_irq_chip = {
+ .irq_mask = ar2315_misc_irq_mask,
+};
+
++static int ar2315_misc_irq_map(struct irq_domain *d, unsigned irq,
++ irq_hw_number_t hw)
++{
++ irq_set_chip_and_handler(irq, &ar2315_misc_irq_chip, handle_level_irq);
++ return 0;
++}
++
++static struct irq_domain_ops ar2315_misc_irq_domain_ops = {
++ .map = ar2315_misc_irq_map,
++};
++
+/*
+ * Called when an interrupt is received, this function
+ * determines exactly which interrupt it was, and it
+ */
+static void ar2315_irq_dispatch(void)
+{
-+ int pending = read_c0_status() & read_c0_cause();
++ u32 pending = read_c0_status() & read_c0_cause();
+
+ if (pending & CAUSEF_IP3)
+ do_IRQ(AR2315_IRQ_WLAN0);
+
+void __init ar2315_arch_init_irq(void)
+{
-+ int i;
++ struct irq_domain *domain;
++ unsigned irq;
+
+ ath25_irq_dispatch = ar2315_irq_dispatch;
-+ for (i = 0; i < AR2315_MISC_IRQ_COUNT; i++) {
-+ int irq = AR231X_MISC_IRQ_BASE + i;
+
-+ irq_set_chip_and_handler(irq, &ar2315_misc_irq_chip,
-+ handle_level_irq);
-+ }
-+ setup_irq(AR2315_MISC_IRQ_AHB, &ar2315_ahb_err_interrupt);
++ domain = irq_domain_add_linear(NULL, AR2315_MISC_IRQ_COUNT,
++ &ar2315_misc_irq_domain_ops, NULL);
++ if (!domain)
++ panic("Failed to add IRQ domain");
++
++ irq = irq_create_mapping(domain, AR2315_MISC_IRQ_AHB);
++ setup_irq(irq, &ar2315_ahb_err_interrupt);
++
+ irq_set_chained_handler(AR2315_IRQ_MISC, ar2315_misc_irq_handler);
++ irq_set_handler_data(AR2315_IRQ_MISC, domain);
++
++ ar2315_misc_irq_domain = domain;
+}
+
+static void ar2315_device_reset_set(u32 mask)
+ },
+ {
+ .flags = IORESOURCE_IRQ,
-+ .start = AR2315_MISC_IRQ_WATCHDOG,
-+ .end = AR2315_MISC_IRQ_WATCHDOG,
+ }
+};
+
+ ar2315_eth_data.macaddr = ath25_board.config->enet0_mac;
+
+ ar2315_init_gpio_leds();
++
++ ar2315_wdt_res[1].start = irq_create_mapping(ar2315_misc_irq_domain,
++ AR2315_MISC_IRQ_WATCHDOG);
++ ar2315_wdt_res[1].end = ar2315_wdt_res[1].start;
+ platform_device_register(&ar2315_wdt);
++
+ platform_device_register(&ar2315_spiflash);
++
+ ath25_add_ethernet(0, AR2315_ENET0_BASE, "eth0_mii",
+ AR2315_ENET0_MII_BASE, AR2315_IRQ_ENET0,
+ &ar2315_eth_data);
++
+ ath25_add_wmac(0, AR2315_WLAN0_BASE, AR2315_IRQ_WLAN0);
+}
+
+
+void __init ar2315_arch_init(void)
+{
-+ ath25_serial_setup(AR2315_UART0_BASE, AR2315_MISC_IRQ_UART0,
-+ ar2315_apb_frequency());
++ unsigned irq = irq_create_mapping(ar2315_misc_irq_domain,
++ AR2315_MISC_IRQ_UART0);
++
++ ath25_serial_setup(AR2315_UART0_BASE, irq, ar2315_apb_frequency());
+}
--- /dev/null
+++ b/arch/mips/ath25/ar2315.h
+#endif
--- /dev/null
+++ b/arch/mips/ath25/devices.h
-@@ -0,0 +1,46 @@
+@@ -0,0 +1,45 @@
+#ifndef __ATH25_DEVICES_H
+#define __ATH25_DEVICES_H
+
-+#define AR231X_MISC_IRQ_BASE 0x20
+#define AR231X_GPIO_IRQ_BASE 0x30
+
+#define ATH25_REG_MS(_val, _field) (((_val) & _field##_M) >> _field##_S)
projects / librecmc / librecmc.git / blobdiff