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openwrtv3/target/linux/ath79/patches-4.14/0022-MIPS-ath79-drop-pci.c.patch
John Crispin 53c474abbd 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>
2018-05-07 08:06:51 +02:00

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From f4128f3224df2309262ef8d1275d928717ebefd0 Mon Sep 17 00:00:00 2001
From: John Crispin <john@phrozen.org>
Date: Tue, 6 Mar 2018 09:21:46 +0100
Subject: [PATCH 22/27] MIPS: ath79: drop pci.c
This patch drops pci.c fromt he ath79 folder and moves the the pcibios
callbacks to a new fixup file.
Signed-off-by: John Crispin <john@phrozen.org>
---
arch/mips/ath79/Makefile | 1 -
arch/mips/ath79/pci.c | 285 --------------------------------------------
arch/mips/pci/Makefile | 1 +
arch/mips/pci/fixup-ath79.c | 21 ++++
4 files changed, 22 insertions(+), 286 deletions(-)
delete mode 100644 arch/mips/ath79/pci.c
create mode 100644 arch/mips/pci/fixup-ath79.c
Index: linux-4.14.25/arch/mips/ath79/Makefile
===================================================================
--- linux-4.14.25.orig/arch/mips/ath79/Makefile
+++ linux-4.14.25/arch/mips/ath79/Makefile
@@ -11,7 +11,6 @@
obj-y := prom.o setup.o irq.o common.o clock.o
obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
-obj-$(CONFIG_PCI) += pci.o
#
# Devices
Index: linux-4.14.25/arch/mips/ath79/pci.c
===================================================================
--- linux-4.14.25.orig/arch/mips/ath79/pci.c
+++ /dev/null
@@ -1,285 +0,0 @@
-/*
- * Atheros AR71XX/AR724X specific PCI setup code
- *
- * Copyright (C) 2011 René Bolldorf <xsecute@googlemail.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 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/init.h>
-#include <linux/pci.h>
-#include <linux/resource.h>
-#include <linux/platform_device.h>
-#include <asm/mach-ath79/ar71xx_regs.h>
-#include <asm/mach-ath79/ath79.h>
-#include <asm/mach-ath79/irq.h>
-#include "pci.h"
-
-static int (*ath79_pci_plat_dev_init)(struct pci_dev *dev);
-static const struct ath79_pci_irq *ath79_pci_irq_map;
-static unsigned ath79_pci_nr_irqs;
-
-static const struct ath79_pci_irq ar71xx_pci_irq_map[] = {
- {
- .slot = 17,
- .pin = 1,
- .irq = ATH79_PCI_IRQ(0),
- }, {
- .slot = 18,
- .pin = 1,
- .irq = ATH79_PCI_IRQ(1),
- }, {
- .slot = 19,
- .pin = 1,
- .irq = ATH79_PCI_IRQ(2),
- }
-};
-
-static const struct ath79_pci_irq ar724x_pci_irq_map[] = {
- {
- .slot = 0,
- .pin = 1,
- .irq = ATH79_PCI_IRQ(0),
- }
-};
-
-static const struct ath79_pci_irq qca955x_pci_irq_map[] = {
- {
- .bus = 0,
- .slot = 0,
- .pin = 1,
- .irq = ATH79_PCI_IRQ(0),
- },
- {
- .bus = 1,
- .slot = 0,
- .pin = 1,
- .irq = ATH79_PCI_IRQ(1),
- },
-};
-
-int pcibios_map_irq(const struct pci_dev *dev, uint8_t slot, uint8_t pin)
-{
- int irq = -1;
- int i;
-
- if (ath79_pci_nr_irqs == 0 ||
- ath79_pci_irq_map == NULL) {
- if (soc_is_ar71xx()) {
- ath79_pci_irq_map = ar71xx_pci_irq_map;
- ath79_pci_nr_irqs = ARRAY_SIZE(ar71xx_pci_irq_map);
- } else if (soc_is_ar724x() ||
- soc_is_ar9342() ||
- soc_is_ar9344()) {
- ath79_pci_irq_map = ar724x_pci_irq_map;
- ath79_pci_nr_irqs = ARRAY_SIZE(ar724x_pci_irq_map);
- } else if (soc_is_qca955x()) {
- ath79_pci_irq_map = qca955x_pci_irq_map;
- ath79_pci_nr_irqs = ARRAY_SIZE(qca955x_pci_irq_map);
- } else if (soc_is_qca956x()) {
- ath79_pci_irq_map = qca956x_pci_irq_map;
- ath79_pci_nr_irqs = ARRAY_SIZE(qca956x_pci_irq_map);
- } else {
- pr_crit("pci %s: invalid irq map\n",
- pci_name((struct pci_dev *) dev));
- return irq;
- }
- }
-
- for (i = 0; i < ath79_pci_nr_irqs; i++) {
- const struct ath79_pci_irq *entry;
-
- entry = &ath79_pci_irq_map[i];
- if (entry->bus == dev->bus->number &&
- entry->slot == slot &&
- entry->pin == pin) {
- irq = entry->irq;
- break;
- }
- }
-
- if (irq < 0)
- pr_crit("pci %s: no irq found for pin %u\n",
- pci_name((struct pci_dev *) dev), pin);
- else
- pr_info("pci %s: using irq %d for pin %u\n",
- pci_name((struct pci_dev *) dev), irq, pin);
-
- return irq;
-}
-
-int pcibios_plat_dev_init(struct pci_dev *dev)
-{
- if (ath79_pci_plat_dev_init)
- return ath79_pci_plat_dev_init(dev);
-
- return 0;
-}
-
-void __init ath79_pci_set_irq_map(unsigned nr_irqs,
- const struct ath79_pci_irq *map)
-{
- ath79_pci_nr_irqs = nr_irqs;
- ath79_pci_irq_map = map;
-}
-
-void __init ath79_pci_set_plat_dev_init(int (*func)(struct pci_dev *dev))
-{
- ath79_pci_plat_dev_init = func;
-}
-
-static struct platform_device *
-ath79_register_pci_ar71xx(void)
-{
- struct platform_device *pdev;
- struct resource res[4];
-
- memset(res, 0, sizeof(res));
-
- res[0].name = "cfg_base";
- res[0].flags = IORESOURCE_MEM;
- res[0].start = AR71XX_PCI_CFG_BASE;
- res[0].end = AR71XX_PCI_CFG_BASE + AR71XX_PCI_CFG_SIZE - 1;
-
- res[1].flags = IORESOURCE_IRQ;
- res[1].start = ATH79_CPU_IRQ(2);
- res[1].end = ATH79_CPU_IRQ(2);
-
- res[2].name = "io_base";
- res[2].flags = IORESOURCE_IO;
- res[2].start = 0;
- res[2].end = 0;
-
- res[3].name = "mem_base";
- res[3].flags = IORESOURCE_MEM;
- res[3].start = AR71XX_PCI_MEM_BASE;
- res[3].end = AR71XX_PCI_MEM_BASE + AR71XX_PCI_MEM_SIZE - 1;
-
- pdev = platform_device_register_simple("ar71xx-pci", -1,
- res, ARRAY_SIZE(res));
- return pdev;
-}
-
-static struct platform_device *
-ath79_register_pci_ar724x(int id,
- unsigned long cfg_base,
- unsigned long ctrl_base,
- unsigned long crp_base,
- unsigned long mem_base,
- unsigned long mem_size,
- unsigned long io_base,
- int irq)
-{
- struct platform_device *pdev;
- struct resource res[6];
-
- memset(res, 0, sizeof(res));
-
- res[0].name = "cfg_base";
- res[0].flags = IORESOURCE_MEM;
- res[0].start = cfg_base;
- res[0].end = cfg_base + AR724X_PCI_CFG_SIZE - 1;
-
- res[1].name = "ctrl_base";
- res[1].flags = IORESOURCE_MEM;
- res[1].start = ctrl_base;
- res[1].end = ctrl_base + AR724X_PCI_CTRL_SIZE - 1;
-
- res[2].flags = IORESOURCE_IRQ;
- res[2].start = irq;
- res[2].end = irq;
-
- res[3].name = "mem_base";
- res[3].flags = IORESOURCE_MEM;
- res[3].start = mem_base;
- res[3].end = mem_base + mem_size - 1;
-
- res[4].name = "io_base";
- res[4].flags = IORESOURCE_IO;
- res[4].start = io_base;
- res[4].end = io_base;
-
- res[5].name = "crp_base";
- res[5].flags = IORESOURCE_MEM;
- res[5].start = crp_base;
- res[5].end = crp_base + AR724X_PCI_CRP_SIZE - 1;
-
- pdev = platform_device_register_simple("ar724x-pci", id,
- res, ARRAY_SIZE(res));
- return pdev;
-}
-
-int __init ath79_register_pci(void)
-{
- struct platform_device *pdev = NULL;
-
- if (soc_is_ar71xx()) {
- pdev = ath79_register_pci_ar71xx();
- } else if (soc_is_ar724x()) {
- pdev = ath79_register_pci_ar724x(-1,
- AR724X_PCI_CFG_BASE,
- AR724X_PCI_CTRL_BASE,
- AR724X_PCI_CRP_BASE,
- AR724X_PCI_MEM_BASE,
- AR724X_PCI_MEM_SIZE,
- 0,
- ATH79_CPU_IRQ(2));
- } else if (soc_is_ar9342() ||
- soc_is_ar9344()) {
- u32 bootstrap;
-
- bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
- if ((bootstrap & AR934X_BOOTSTRAP_PCIE_RC) == 0)
- return -ENODEV;
-
- pdev = ath79_register_pci_ar724x(-1,
- AR724X_PCI_CFG_BASE,
- AR724X_PCI_CTRL_BASE,
- AR724X_PCI_CRP_BASE,
- AR724X_PCI_MEM_BASE,
- AR724X_PCI_MEM_SIZE,
- 0,
- ATH79_IP2_IRQ(0));
- } else if (soc_is_qca9558()) {
- pdev = ath79_register_pci_ar724x(0,
- QCA955X_PCI_CFG_BASE0,
- QCA955X_PCI_CTRL_BASE0,
- QCA955X_PCI_CRP_BASE0,
- QCA955X_PCI_MEM_BASE0,
- QCA955X_PCI_MEM_SIZE,
- 0,
- ATH79_IP2_IRQ(0));
-
- pdev = ath79_register_pci_ar724x(1,
- QCA955X_PCI_CFG_BASE1,
- QCA955X_PCI_CTRL_BASE1,
- QCA955X_PCI_CRP_BASE1,
- QCA955X_PCI_MEM_BASE1,
- QCA955X_PCI_MEM_SIZE,
- 1,
- ATH79_IP3_IRQ(2));
- } else if (soc_is_qca956x()) {
- pdev = ath79_register_pci_ar724x(0,
- QCA956X_PCI_CFG_BASE1,
- QCA956X_PCI_CTRL_BASE1,
- QCA956X_PCI_CRP_BASE1,
- QCA956X_PCI_MEM_BASE1,
- QCA956X_PCI_MEM_SIZE,
- 1,
- ATH79_IP3_IRQ(2));
- } else {
- /* No PCI support */
- return -ENODEV;
- }
-
- if (!pdev)
- pr_err("unable to register PCI controller device\n");
-
- return pdev ? 0 : -ENODEV;
-}
Index: linux-4.14.25/arch/mips/pci/Makefile
===================================================================
--- linux-4.14.25.orig/arch/mips/pci/Makefile
+++ linux-4.14.25/arch/mips/pci/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_MIPS_PCI_VIRTIO) += pci-vir
#
# These are still pretty much in the old state, watch, go blind.
#
+obj-$(CONFIG_ATH79) += fixup-ath79.o
obj-$(CONFIG_LASAT) += pci-lasat.o
obj-$(CONFIG_MIPS_COBALT) += fixup-cobalt.o
obj-$(CONFIG_LEMOTE_FULOONG2E) += fixup-fuloong2e.o ops-loongson2.o
Index: linux-4.14.25/arch/mips/pci/fixup-ath79.c
===================================================================
--- /dev/null
+++ linux-4.14.25/arch/mips/pci/fixup-ath79.c
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2018 John Crispin <john@phrozen.org>
+ *
+ * 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/pci.h>
+//#include <linux/of_irq.h>
+#include <linux/of_pci.h>
+
+int pcibios_plat_dev_init(struct pci_dev *dev)
+{
+ return PCIBIOS_SUCCESSFUL;
+}
+
+int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+ return of_irq_parse_and_map_pci(dev, slot, pin);
+}
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