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authorJohn Crispin <john@phrozen.org>2018-05-06 10:20:11 +0200
committerJohn Crispin <john@phrozen.org>2018-05-07 08:06:51 +0200
commit53c474abbdfef8eb3499e2d10c9ad491788b8a72 (patch)
treeacd19415420664f59bc63c1ceb4ad37bb7323027 /target/linux/ath79/patches-4.14/0025-MIPS-ath79-drop-irq.c.patch
parent3dc523f232ff01d31d59345f5fa6de508d5059ef (diff)
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ath79: add new OF only target for QCA MIPS silicon
This target aims to replace ar71xx mid-term. The big part that is still missing is making the MMIO/AHB wifi work using OF. NAND and mikrotik subtargets will follow. Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/ath79/patches-4.14/0025-MIPS-ath79-drop-irq.c.patch')
-rw-r--r--target/linux/ath79/patches-4.14/0025-MIPS-ath79-drop-irq.c.patch346
1 files changed, 346 insertions, 0 deletions
diff --git a/target/linux/ath79/patches-4.14/0025-MIPS-ath79-drop-irq.c.patch b/target/linux/ath79/patches-4.14/0025-MIPS-ath79-drop-irq.c.patch
new file mode 100644
index 0000000000..738f239af0
--- /dev/null
+++ b/target/linux/ath79/patches-4.14/0025-MIPS-ath79-drop-irq.c.patch
@@ -0,0 +1,346 @@
+From 08b9cad7da5d981d595fe6d76e9675f85e23e688 Mon Sep 17 00:00:00 2001
+From: John Crispin <john@phrozen.org>
+Date: Tue, 6 Mar 2018 09:57:15 +0100
+Subject: [PATCH 25/27] MIPS: ath79: drop irq.c
+
+all IRQ init code will flow via OF based irq chips.
+
+Signed-off-by: John Crispin <john@phrozen.org>
+---
+ arch/mips/ath79/Makefile | 2 +-
+ arch/mips/ath79/irq.c | 285 -----------------------------------------------
+ arch/mips/ath79/setup.c | 6 +
+ 3 files changed, 7 insertions(+), 286 deletions(-)
+ delete mode 100644 arch/mips/ath79/irq.c
+
+diff --git a/arch/mips/ath79/Makefile b/arch/mips/ath79/Makefile
+index 783369bc1c5b..bd0c9b8b1b5b 100644
+--- a/arch/mips/ath79/Makefile
++++ b/arch/mips/ath79/Makefile
+@@ -8,7 +8,7 @@
+ # under the terms of the GNU General Public License version 2 as published
+ # by the Free Software Foundation.
+
+-obj-y := prom.o setup.o irq.o common.o clock.o
++obj-y := prom.o setup.o common.o clock.o
+
+ obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
+
+diff --git a/arch/mips/ath79/irq.c b/arch/mips/ath79/irq.c
+deleted file mode 100644
+index 58d17ef6f58f..000000000000
+--- a/arch/mips/ath79/irq.c
++++ /dev/null
+@@ -1,285 +0,0 @@
+-/*
+- * Atheros AR71xx/AR724x/AR913x specific interrupt handling
+- *
+- * Copyright (C) 2010-2011 Jaiganesh Narayanan <jnarayanan@atheros.com>
+- * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
+- * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+- *
+- * Parts of this file are based on Atheros' 2.6.15/2.6.31 BSP
+- *
+- * This program is free software; you can redistribute it and/or modify it
+- * under the terms of the GNU General Public License version 2 as published
+- * by the Free Software Foundation.
+- */
+-
+-#include <linux/kernel.h>
+-#include <linux/init.h>
+-#include <linux/interrupt.h>
+-#include <linux/irqchip.h>
+-#include <linux/of_irq.h>
+-
+-#include <asm/irq_cpu.h>
+-#include <asm/mipsregs.h>
+-
+-#include <asm/mach-ath79/ath79.h>
+-#include <asm/mach-ath79/ar71xx_regs.h>
+-#include "common.h"
+-#include "machtypes.h"
+-
+-
+-static void ar934x_ip2_irq_dispatch(struct irq_desc *desc)
+-{
+- u32 status;
+-
+- status = ath79_reset_rr(AR934X_RESET_REG_PCIE_WMAC_INT_STATUS);
+-
+- if (status & AR934X_PCIE_WMAC_INT_PCIE_ALL) {
+- ath79_ddr_wb_flush(3);
+- generic_handle_irq(ATH79_IP2_IRQ(0));
+- } else if (status & AR934X_PCIE_WMAC_INT_WMAC_ALL) {
+- ath79_ddr_wb_flush(4);
+- generic_handle_irq(ATH79_IP2_IRQ(1));
+- } else {
+- spurious_interrupt();
+- }
+-}
+-
+-static void ar934x_ip2_irq_init(void)
+-{
+- int i;
+-
+- for (i = ATH79_IP2_IRQ_BASE;
+- i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
+- irq_set_chip_and_handler(i, &dummy_irq_chip,
+- handle_level_irq);
+-
+- irq_set_chained_handler(ATH79_CPU_IRQ(2), ar934x_ip2_irq_dispatch);
+-}
+-
+-static void qca953x_ip2_irq_dispatch(struct irq_desc *desc)
+-{
+- u32 status;
+-
+- status = ath79_reset_rr(QCA953X_RESET_REG_PCIE_WMAC_INT_STATUS);
+-
+- if (status & QCA953X_PCIE_WMAC_INT_PCIE_ALL) {
+- ath79_ddr_wb_flush(3);
+- generic_handle_irq(ATH79_IP2_IRQ(0));
+- } else if (status & QCA953X_PCIE_WMAC_INT_WMAC_ALL) {
+- ath79_ddr_wb_flush(4);
+- generic_handle_irq(ATH79_IP2_IRQ(1));
+- } else {
+- spurious_interrupt();
+- }
+-}
+-
+-static void qca953x_irq_init(void)
+-{
+- int i;
+-
+- for (i = ATH79_IP2_IRQ_BASE;
+- i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
+- irq_set_chip_and_handler(i, &dummy_irq_chip, handle_level_irq);
+-
+- irq_set_chained_handler(ATH79_CPU_IRQ(2), qca953x_ip2_irq_dispatch);
+-}
+-
+-static void qca955x_ip2_irq_dispatch(struct irq_desc *desc)
+-{
+- u32 status;
+-
+- status = ath79_reset_rr(QCA955X_RESET_REG_EXT_INT_STATUS);
+- status &= QCA955X_EXT_INT_PCIE_RC1_ALL | QCA955X_EXT_INT_WMAC_ALL;
+-
+- if (status == 0) {
+- spurious_interrupt();
+- return;
+- }
+-
+- if (status & QCA955X_EXT_INT_PCIE_RC1_ALL) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP2_IRQ(0));
+- }
+-
+- if (status & QCA955X_EXT_INT_WMAC_ALL) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP2_IRQ(1));
+- }
+-}
+-
+-static void qca955x_ip3_irq_dispatch(struct irq_desc *desc)
+-{
+- u32 status;
+-
+- status = ath79_reset_rr(QCA955X_RESET_REG_EXT_INT_STATUS);
+- status &= QCA955X_EXT_INT_PCIE_RC2_ALL |
+- QCA955X_EXT_INT_USB1 |
+- QCA955X_EXT_INT_USB2;
+-
+- if (status == 0) {
+- spurious_interrupt();
+- return;
+- }
+-
+- if (status & QCA955X_EXT_INT_USB1) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP3_IRQ(0));
+- }
+-
+- if (status & QCA955X_EXT_INT_USB2) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP3_IRQ(1));
+- }
+-
+- if (status & QCA955X_EXT_INT_PCIE_RC2_ALL) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP3_IRQ(2));
+- }
+-}
+-
+-static void qca955x_irq_init(void)
+-{
+- int i;
+-
+- for (i = ATH79_IP2_IRQ_BASE;
+- i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
+- irq_set_chip_and_handler(i, &dummy_irq_chip,
+- handle_level_irq);
+-
+- irq_set_chained_handler(ATH79_CPU_IRQ(2), qca955x_ip2_irq_dispatch);
+-
+- for (i = ATH79_IP3_IRQ_BASE;
+- i < ATH79_IP3_IRQ_BASE + ATH79_IP3_IRQ_COUNT; i++)
+- irq_set_chip_and_handler(i, &dummy_irq_chip,
+- handle_level_irq);
+-
+- irq_set_chained_handler(ATH79_CPU_IRQ(3), qca955x_ip3_irq_dispatch);
+-}
+-
+-static void qca956x_ip2_irq_dispatch(struct irq_desc *desc)
+-{
+- u32 status;
+-
+- status = ath79_reset_rr(QCA956X_RESET_REG_EXT_INT_STATUS);
+- status &= QCA956X_EXT_INT_PCIE_RC1_ALL | QCA956X_EXT_INT_WMAC_ALL;
+-
+- if (status == 0) {
+- spurious_interrupt();
+- return;
+- }
+-
+- if (status & QCA956X_EXT_INT_PCIE_RC1_ALL) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP2_IRQ(0));
+- }
+-
+- if (status & QCA956X_EXT_INT_WMAC_ALL) {
+- /* TODO: flsuh DDR? */
+- generic_handle_irq(ATH79_IP2_IRQ(1));
+- }
+-}
+-
+-static void qca956x_ip3_irq_dispatch(struct irq_desc *desc)
+-{
+- u32 status;
+-
+- status = ath79_reset_rr(QCA956X_RESET_REG_EXT_INT_STATUS);
+- status &= QCA956X_EXT_INT_PCIE_RC2_ALL |
+- QCA956X_EXT_INT_USB1 | QCA956X_EXT_INT_USB2;
+-
+- if (status == 0) {
+- spurious_interrupt();
+- return;
+- }
+-
+- if (status & QCA956X_EXT_INT_USB1) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP3_IRQ(0));
+- }
+-
+- if (status & QCA956X_EXT_INT_USB2) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP3_IRQ(1));
+- }
+-
+- if (status & QCA956X_EXT_INT_PCIE_RC2_ALL) {
+- /* TODO: flush DDR? */
+- generic_handle_irq(ATH79_IP3_IRQ(2));
+- }
+-}
+-
+-static void qca956x_enable_timer_cb(void) {
+- u32 misc;
+-
+- misc = ath79_reset_rr(AR71XX_RESET_REG_MISC_INT_ENABLE);
+- misc |= MISC_INT_MIPS_SI_TIMERINT_MASK;
+- ath79_reset_wr(AR71XX_RESET_REG_MISC_INT_ENABLE, misc);
+-}
+-
+-static void qca956x_irq_init(void)
+-{
+- int i;
+-
+- for (i = ATH79_IP2_IRQ_BASE;
+- i < ATH79_IP2_IRQ_BASE + ATH79_IP2_IRQ_COUNT; i++)
+- irq_set_chip_and_handler(i, &dummy_irq_chip, handle_level_irq);
+-
+- irq_set_chained_handler(ATH79_CPU_IRQ(2), qca956x_ip2_irq_dispatch);
+-
+- for (i = ATH79_IP3_IRQ_BASE;
+- i < ATH79_IP3_IRQ_BASE + ATH79_IP3_IRQ_COUNT; i++)
+- irq_set_chip_and_handler(i, &dummy_irq_chip, handle_level_irq);
+-
+- irq_set_chained_handler(ATH79_CPU_IRQ(3), qca956x_ip3_irq_dispatch);
+-
+- /* QCA956x timer init workaround has to be applied right before setting
+- * up the clock. Else, there will be no jiffies */
+- late_time_init = &qca956x_enable_timer_cb;
+-}
+-
+-void __init arch_init_irq(void)
+-{
+- unsigned irq_wb_chan2 = -1;
+- unsigned irq_wb_chan3 = -1;
+- bool misc_is_ar71xx;
+-
+- if (mips_machtype == ATH79_MACH_GENERIC_OF) {
+- irqchip_init();
+- return;
+- }
+-
+- if (soc_is_ar71xx() || soc_is_ar724x() ||
+- soc_is_ar913x() || soc_is_ar933x()) {
+- irq_wb_chan2 = 3;
+- irq_wb_chan3 = 2;
+- } else if (soc_is_ar934x() || soc_is_qca953x()) {
+- irq_wb_chan3 = 2;
+- }
+-
+- ath79_cpu_irq_init(irq_wb_chan2, irq_wb_chan3);
+-
+- if (soc_is_ar71xx() || soc_is_ar913x())
+- misc_is_ar71xx = true;
+- else if (soc_is_ar724x() ||
+- soc_is_ar933x() ||
+- soc_is_ar934x() ||
+- soc_is_qca953x() ||
+- soc_is_qca955x() ||
+- soc_is_qca956x() ||
+- soc_is_tp9343())
+- misc_is_ar71xx = false;
+- else
+- BUG();
+- ath79_misc_irq_init(
+- ath79_reset_base + AR71XX_RESET_REG_MISC_INT_STATUS,
+- ATH79_CPU_IRQ(6), ATH79_MISC_IRQ_BASE, misc_is_ar71xx);
+-
+- if (soc_is_ar934x())
+- ar934x_ip2_irq_init();
+- else if (soc_is_qca953x())
+- qca953x_irq_init();
+- else if (soc_is_qca955x())
+- qca955x_irq_init();
+- else if (soc_is_qca956x() || soc_is_tp9343())
+- qca956x_irq_init();
+-}
+diff --git a/arch/mips/ath79/setup.c b/arch/mips/ath79/setup.c
+index 8d7ffa2e8265..7b089c07d2fa 100644
+--- a/arch/mips/ath79/setup.c
++++ b/arch/mips/ath79/setup.c
+@@ -19,6 +19,7 @@
+ #include <linux/clk.h>
+ #include <linux/clk-provider.h>
+ #include <linux/of_fdt.h>
++#include <linux/irqchip.h>
+
+ #include <asm/bootinfo.h>
+ #include <asm/idle.h>
+@@ -310,6 +311,11 @@ void __init plat_time_init(void)
+ mips_hpt_frequency = cpu_clk_rate / 2;
+ }
+
++void __init arch_init_irq(void)
++{
++ irqchip_init();
++}
++
+ static int __init ath79_setup(void)
+ {
+ if (mips_machtype == ATH79_MACH_GENERIC_OF)
+--
+2.11.0
+