From 70b3adbba056f5d9081f1ec9b4a629e3c7502072 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Thu, 19 Mar 2009 21:01:45 +0300 Subject: powerpc/83xx: Move gianfar mdio nodes under the ethernet nodes Currently it doesn't matter where the mdio nodes are placed, but with power management support (i.e. when sleep = <> properties will take effect), mdio nodes placement will become important: mdio controller is a part of the ethernet block, so the mdio nodes should be placed correctly. Otherwise we may wrongly assume that MDIO controllers are available during sleep. Suggested-by: Scott Wood Signed-off-by: Anton Vorontsov Signed-off-by: Kumar Gala --- arch/powerpc/platforms/83xx/asp834x.c | 1 + arch/powerpc/platforms/83xx/mpc834x_itx.c | 1 + arch/powerpc/platforms/83xx/mpc834x_mds.c | 1 + arch/powerpc/platforms/83xx/mpc837x_mds.c | 1 + arch/powerpc/platforms/83xx/mpc837x_rdb.c | 1 + arch/powerpc/platforms/83xx/sbc834x.c | 1 + 6 files changed, 6 insertions(+) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/83xx/asp834x.c b/arch/powerpc/platforms/83xx/asp834x.c index bb30d67..aa0d84d 100644 --- a/arch/powerpc/platforms/83xx/asp834x.c +++ b/arch/powerpc/platforms/83xx/asp834x.c @@ -58,6 +58,7 @@ static struct __initdata of_device_id asp8347_ids[] = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/83xx/mpc834x_itx.c b/arch/powerpc/platforms/83xx/mpc834x_itx.c index 76092d3..81e44fa 100644 --- a/arch/powerpc/platforms/83xx/mpc834x_itx.c +++ b/arch/powerpc/platforms/83xx/mpc834x_itx.c @@ -42,6 +42,7 @@ static struct of_device_id __initdata mpc834x_itx_ids[] = { { .compatible = "fsl,pq2pro-localbus", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/83xx/mpc834x_mds.c b/arch/powerpc/platforms/83xx/mpc834x_mds.c index fc3f2ed..d0a634b 100644 --- a/arch/powerpc/platforms/83xx/mpc834x_mds.c +++ b/arch/powerpc/platforms/83xx/mpc834x_mds.c @@ -112,6 +112,7 @@ static struct of_device_id mpc834x_ids[] = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c index 634785c..51df7e7 100644 --- a/arch/powerpc/platforms/83xx/mpc837x_mds.c +++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c @@ -96,6 +96,7 @@ static struct of_device_id mpc837x_ids[] = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/83xx/mpc837x_rdb.c b/arch/powerpc/platforms/83xx/mpc837x_rdb.c index 3d7b953..76f3b32 100644 --- a/arch/powerpc/platforms/83xx/mpc837x_rdb.c +++ b/arch/powerpc/platforms/83xx/mpc837x_rdb.c @@ -48,6 +48,7 @@ static struct of_device_id mpc837x_ids[] = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/83xx/sbc834x.c b/arch/powerpc/platforms/83xx/sbc834x.c index 156c4e2..49023db 100644 --- a/arch/powerpc/platforms/83xx/sbc834x.c +++ b/arch/powerpc/platforms/83xx/sbc834x.c @@ -84,6 +84,7 @@ static struct __initdata of_device_id sbc834x_ids[] = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; -- cgit v1.1 From 84ba4a5899e613a396c5bea5feadba923534801b Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Thu, 19 Mar 2009 21:01:48 +0300 Subject: powerpc/85xx: Move gianfar mdio nodes under the ethernet nodes Currently it doesn't matter where the mdio nodes are placed, but with power management support (i.e. when sleep = <> properties will take effect), mdio nodes placement will become important: mdio controller is a part of the ethernet block, so the mdio nodes should be placed correctly. Otherwise we may wrongly assume that MDIO controllers are available during sleep. Suggested-by: Scott Wood Signed-off-by: Anton Vorontsov Signed-off-by: Kumar Gala --- arch/powerpc/platforms/85xx/ksi8560.c | 1 + arch/powerpc/platforms/85xx/mpc8536_ds.c | 1 + arch/powerpc/platforms/85xx/mpc85xx_ads.c | 1 + arch/powerpc/platforms/85xx/mpc85xx_cds.c | 1 + arch/powerpc/platforms/85xx/mpc85xx_ds.c | 1 + arch/powerpc/platforms/85xx/mpc85xx_mds.c | 1 + arch/powerpc/platforms/85xx/sbc8548.c | 1 + arch/powerpc/platforms/85xx/sbc8560.c | 1 + arch/powerpc/platforms/85xx/stx_gp3.c | 1 + arch/powerpc/platforms/85xx/tqm85xx.c | 1 + 10 files changed, 10 insertions(+) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/85xx/ksi8560.c b/arch/powerpc/platforms/85xx/ksi8560.c index 66f2923..f4d36b5 100644 --- a/arch/powerpc/platforms/85xx/ksi8560.c +++ b/arch/powerpc/platforms/85xx/ksi8560.c @@ -219,6 +219,7 @@ static struct of_device_id __initdata of_bus_ids[] = { { .type = "simple-bus", }, { .name = "cpm", }, { .name = "localbus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/mpc8536_ds.c b/arch/powerpc/platforms/85xx/mpc8536_ds.c index 1bf5aef..63efca2 100644 --- a/arch/powerpc/platforms/85xx/mpc8536_ds.c +++ b/arch/powerpc/platforms/85xx/mpc8536_ds.c @@ -92,6 +92,7 @@ static struct of_device_id __initdata mpc8536_ds_ids[] = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ads.c b/arch/powerpc/platforms/85xx/mpc85xx_ads.c index 21f0090..9438a89 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_ads.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_ads.c @@ -226,6 +226,7 @@ static struct of_device_id __initdata of_bus_ids[] = { { .name = "cpm", }, { .name = "localbus", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/mpc85xx_cds.c b/arch/powerpc/platforms/85xx/mpc85xx_cds.c index aeb6a5b..0a9e491 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_cds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_cds.c @@ -336,6 +336,7 @@ static struct of_device_id __initdata of_bus_ids[] = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/mpc85xx_ds.c b/arch/powerpc/platforms/85xx/mpc85xx_ds.c index 7326d90..de66de7 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_ds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_ds.c @@ -204,6 +204,7 @@ static struct of_device_id __initdata mpc85xxds_ids[] = { { .type = "soc", }, { .compatible = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index 658a36f..7dd0290 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -265,6 +265,7 @@ static struct of_device_id mpc85xx_ids[] = { { .compatible = "simple-bus", }, { .type = "qe", }, { .compatible = "fsl,qe", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/sbc8548.c b/arch/powerpc/platforms/85xx/sbc8548.c index 7ec77ce..ecdd8c0 100644 --- a/arch/powerpc/platforms/85xx/sbc8548.c +++ b/arch/powerpc/platforms/85xx/sbc8548.c @@ -154,6 +154,7 @@ static struct of_device_id __initdata of_bus_ids[] = { { .name = "soc", }, { .type = "soc", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/sbc8560.c b/arch/powerpc/platforms/85xx/sbc8560.c index 472f254..cc27807 100644 --- a/arch/powerpc/platforms/85xx/sbc8560.c +++ b/arch/powerpc/platforms/85xx/sbc8560.c @@ -213,6 +213,7 @@ static struct of_device_id __initdata of_bus_ids[] = { { .name = "cpm", }, { .name = "localbus", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/stx_gp3.c b/arch/powerpc/platforms/85xx/stx_gp3.c index 0cca8f5..f559918 100644 --- a/arch/powerpc/platforms/85xx/stx_gp3.c +++ b/arch/powerpc/platforms/85xx/stx_gp3.c @@ -145,6 +145,7 @@ static void stx_gp3_show_cpuinfo(struct seq_file *m) static struct of_device_id __initdata of_bus_ids[] = { { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/85xx/tqm85xx.c b/arch/powerpc/platforms/85xx/tqm85xx.c index 2933a8e..5b0ab99 100644 --- a/arch/powerpc/platforms/85xx/tqm85xx.c +++ b/arch/powerpc/platforms/85xx/tqm85xx.c @@ -153,6 +153,7 @@ static void tqm85xx_show_cpuinfo(struct seq_file *m) static struct of_device_id __initdata of_bus_ids[] = { { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; -- cgit v1.1 From d8bc55fb334e1124b72684e2d0a2e599aab21ae4 Mon Sep 17 00:00:00 2001 From: Anton Vorontsov Date: Thu, 19 Mar 2009 21:01:51 +0300 Subject: powerpc/86xx: Move gianfar mdio nodes under the ethernet nodes Currently it doesn't matter where the mdio nodes are placed, but with power management support (i.e. when sleep = <> properties will take effect), mdio nodes placement will become important: mdio controller is a part of the ethernet block, so the mdio nodes should be placed correctly. Otherwise we may wrongly assume that MDIO controllers are available during sleep. Suggested-by: Scott Wood Signed-off-by: Anton Vorontsov Signed-off-by: Kumar Gala --- arch/powerpc/platforms/86xx/gef_ppc9a.c | 1 + arch/powerpc/platforms/86xx/gef_sbc310.c | 1 + arch/powerpc/platforms/86xx/gef_sbc610.c | 1 + arch/powerpc/platforms/86xx/mpc8610_hpcd.c | 1 + arch/powerpc/platforms/86xx/mpc86xx_hpcn.c | 1 + arch/powerpc/platforms/86xx/sbc8641d.c | 1 + 6 files changed, 6 insertions(+) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/86xx/gef_ppc9a.c b/arch/powerpc/platforms/86xx/gef_ppc9a.c index 830fd9a..d791046 100644 --- a/arch/powerpc/platforms/86xx/gef_ppc9a.c +++ b/arch/powerpc/platforms/86xx/gef_ppc9a.c @@ -194,6 +194,7 @@ static long __init mpc86xx_time_init(void) static __initdata struct of_device_id of_bus_ids[] = { { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/86xx/gef_sbc310.c b/arch/powerpc/platforms/86xx/gef_sbc310.c index ba3ce43..af14f85 100644 --- a/arch/powerpc/platforms/86xx/gef_sbc310.c +++ b/arch/powerpc/platforms/86xx/gef_sbc310.c @@ -205,6 +205,7 @@ static long __init mpc86xx_time_init(void) static __initdata struct of_device_id of_bus_ids[] = { { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/86xx/gef_sbc610.c b/arch/powerpc/platforms/86xx/gef_sbc610.c index d6b772b..ea23606 100644 --- a/arch/powerpc/platforms/86xx/gef_sbc610.c +++ b/arch/powerpc/platforms/86xx/gef_sbc610.c @@ -194,6 +194,7 @@ static long __init mpc86xx_time_init(void) static __initdata struct of_device_id of_bus_ids[] = { { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c index e8d54ac..3f49a6f 100644 --- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c +++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c @@ -46,6 +46,7 @@ static unsigned char *pixis_bdcfg0, *pixis_arch; static struct of_device_id __initdata mpc8610_ids[] = { { .compatible = "fsl,mpc8610-immr", }, { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {} }; diff --git a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c index 27e0e68..c4ec49b 100644 --- a/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c +++ b/arch/powerpc/platforms/86xx/mpc86xx_hpcn.c @@ -148,6 +148,7 @@ mpc86xx_time_init(void) static __initdata struct of_device_id of_bus_ids[] = { { .compatible = "simple-bus", }, { .compatible = "fsl,rapidio-delta", }, + { .compatible = "gianfar", }, {}, }; diff --git a/arch/powerpc/platforms/86xx/sbc8641d.c b/arch/powerpc/platforms/86xx/sbc8641d.c index 5fd7ed4..2886a36 100644 --- a/arch/powerpc/platforms/86xx/sbc8641d.c +++ b/arch/powerpc/platforms/86xx/sbc8641d.c @@ -103,6 +103,7 @@ mpc86xx_time_init(void) static __initdata struct of_device_id of_bus_ids[] = { { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, {}, }; -- cgit v1.1 From 393adcacadeea407925348b1a59ae8509ecffb3c Mon Sep 17 00:00:00 2001 From: Wolfgang Grandegger Date: Sun, 22 Mar 2009 14:58:43 +0100 Subject: powerpc/85xx: Add support for the "socrates" board (MPC8544). Supported are Ethernet, serial console, I2C, I2C-based RTC and temperature sensors, NOR and NAND flash, PCI, USB, CAN and Lime display controller. The multiplexing of FPGA interrupts onto PowerPC interrupt lines is supported through our own fpga_pic interrupt controller driver. For example the SJA1000 controller is level low sensitive connected to fpga_pic line 2 and is routed to the second (of three) irq lines to the CPU: can@3,100 { compatible = "philips,sja1000"; reg = <3 0x100 0x80>; interrupts = <2 2>; interrupts = <2 8 1>; // number, type, routing interrupt-parent = <&fpga_pic>; }; Signed-off-by: Sergei Poselenov Signed-off-by: Yuri Tikhonov Signed-off-by: Ilya Yanok Signed-off-by: Wolfgang Grandegger Signed-off-by: Anatolij Gustschin Signed-off-by: Dmitry Rakhchev Signed-off-by: Kumar Gala --- arch/powerpc/platforms/85xx/Kconfig | 6 + arch/powerpc/platforms/85xx/Makefile | 1 + arch/powerpc/platforms/85xx/socrates.c | 133 ++++++++++ arch/powerpc/platforms/85xx/socrates_fpga_pic.c | 327 ++++++++++++++++++++++++ arch/powerpc/platforms/85xx/socrates_fpga_pic.h | 16 ++ 5 files changed, 483 insertions(+) create mode 100644 arch/powerpc/platforms/85xx/socrates.c create mode 100644 arch/powerpc/platforms/85xx/socrates_fpga_pic.c create mode 100644 arch/powerpc/platforms/85xx/socrates_fpga_pic.h (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig index b79dc71..7f066ad 100644 --- a/arch/powerpc/platforms/85xx/Kconfig +++ b/arch/powerpc/platforms/85xx/Kconfig @@ -51,6 +51,12 @@ config MPC85xx_DS help This option enables support for the MPC85xx DS (MPC8544 DS) board +config SOCRATES + bool "Socrates" + select DEFAULT_UIMAGE + help + This option enables support for the Socrates board. + config KSI8560 bool "Emerson KSI8560" select DEFAULT_UIMAGE diff --git a/arch/powerpc/platforms/85xx/Makefile b/arch/powerpc/platforms/85xx/Makefile index f0798c0..a857b35 100644 --- a/arch/powerpc/platforms/85xx/Makefile +++ b/arch/powerpc/platforms/85xx/Makefile @@ -13,4 +13,5 @@ obj-$(CONFIG_STX_GP3) += stx_gp3.o obj-$(CONFIG_TQM85xx) += tqm85xx.o obj-$(CONFIG_SBC8560) += sbc8560.o obj-$(CONFIG_SBC8548) += sbc8548.o +obj-$(CONFIG_SOCRATES) += socrates.o socrates_fpga_pic.o obj-$(CONFIG_KSI8560) += ksi8560.o diff --git a/arch/powerpc/platforms/85xx/socrates.c b/arch/powerpc/platforms/85xx/socrates.c new file mode 100644 index 0000000..d0e8443 --- /dev/null +++ b/arch/powerpc/platforms/85xx/socrates.c @@ -0,0 +1,133 @@ +/* + * Copyright (c) 2008 Emcraft Systems + * Sergei Poselenov + * + * Based on MPC8560 ADS and arch/ppc tqm85xx ports + * + * Maintained by Kumar Gala (see MAINTAINERS for contact information) + * + * Copyright 2008 Freescale Semiconductor Inc. + * + * Copyright (c) 2005-2006 DENX Software Engineering + * Stefan Roese + * + * Based on original work by + * Kumar Gala + * Copyright 2004 Freescale Semiconductor Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "socrates_fpga_pic.h" + +static void __init socrates_pic_init(void) +{ + struct mpic *mpic; + struct resource r; + struct device_node *np; + + np = of_find_node_by_type(NULL, "open-pic"); + if (!np) { + printk(KERN_ERR "Could not find open-pic node\n"); + return; + } + + if (of_address_to_resource(np, 0, &r)) { + printk(KERN_ERR "Could not map mpic register space\n"); + of_node_put(np); + return; + } + + mpic = mpic_alloc(np, r.start, + MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, + 0, 256, " OpenPIC "); + BUG_ON(mpic == NULL); + of_node_put(np); + + mpic_init(mpic); + + np = of_find_compatible_node(NULL, NULL, "abb,socrates-fpga-pic"); + if (!np) { + printk(KERN_ERR "Could not find socrates-fpga-pic node\n"); + return; + } + socrates_fpga_pic_init(np); + of_node_put(np); +} + +/* + * Setup the architecture + */ +static void __init socrates_setup_arch(void) +{ +#ifdef CONFIG_PCI + struct device_node *np; +#endif + + if (ppc_md.progress) + ppc_md.progress("socrates_setup_arch()", 0); + +#ifdef CONFIG_PCI + for_each_compatible_node(np, "pci", "fsl,mpc8540-pci") + fsl_add_bridge(np, 1); +#endif +} + +static struct of_device_id __initdata socrates_of_bus_ids[] = { + { .compatible = "simple-bus", }, + { .compatible = "gianfar", }, + {}, +}; + +static void __init socrates_init(void) +{ + of_platform_bus_probe(NULL, socrates_of_bus_ids, NULL); +} + +/* + * Called very early, device-tree isn't unflattened + */ +static int __init socrates_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + if (of_flat_dt_is_compatible(root, "abb,socrates")) + return 1; + + return 0; +} + +define_machine(socrates) { + .name = "Socrates", + .probe = socrates_probe, + .setup_arch = socrates_setup_arch, + .init = socrates_init, + .init_IRQ = socrates_pic_init, + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +}; diff --git a/arch/powerpc/platforms/85xx/socrates_fpga_pic.c b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c new file mode 100644 index 0000000..60edf63 --- /dev/null +++ b/arch/powerpc/platforms/85xx/socrates_fpga_pic.c @@ -0,0 +1,327 @@ +/* + * Copyright (C) 2008 Ilya Yanok, Emcraft Systems + * + * + * 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 +#include +#include + +/* + * The FPGA supports 9 interrupt sources, which can be routed to 3 + * interrupt request lines of the MPIC. The line to be used can be + * specified through the third cell of FDT property "interrupts". + */ + +#define SOCRATES_FPGA_NUM_IRQS 9 + +#define FPGA_PIC_IRQCFG (0x0) +#define FPGA_PIC_IRQMASK(n) (0x4 + 0x4 * (n)) + +#define SOCRATES_FPGA_IRQ_MASK ((1 << SOCRATES_FPGA_NUM_IRQS) - 1) + +struct socrates_fpga_irq_info { + unsigned int irq_line; + int type; +}; + +/* + * Interrupt routing and type table + * + * IRQ_TYPE_NONE means the interrupt type is configurable, + * otherwise it's fixed to the specified value. + */ +static struct socrates_fpga_irq_info fpga_irqs[SOCRATES_FPGA_NUM_IRQS] = { + [0] = {0, IRQ_TYPE_NONE}, + [1] = {0, IRQ_TYPE_LEVEL_HIGH}, + [2] = {0, IRQ_TYPE_LEVEL_LOW}, + [3] = {0, IRQ_TYPE_NONE}, + [4] = {0, IRQ_TYPE_NONE}, + [5] = {0, IRQ_TYPE_NONE}, + [6] = {0, IRQ_TYPE_NONE}, + [7] = {0, IRQ_TYPE_NONE}, + [8] = {0, IRQ_TYPE_LEVEL_HIGH}, +}; + +#define socrates_fpga_irq_to_hw(virq) ((unsigned int)irq_map[virq].hwirq) + +static DEFINE_SPINLOCK(socrates_fpga_pic_lock); + +static void __iomem *socrates_fpga_pic_iobase; +static struct irq_host *socrates_fpga_pic_irq_host; +static unsigned int socrates_fpga_irqs[3]; + +static inline uint32_t socrates_fpga_pic_read(int reg) +{ + return in_be32(socrates_fpga_pic_iobase + reg); +} + +static inline void socrates_fpga_pic_write(int reg, uint32_t val) +{ + out_be32(socrates_fpga_pic_iobase + reg, val); +} + +static inline unsigned int socrates_fpga_pic_get_irq(unsigned int irq) +{ + uint32_t cause; + unsigned long flags; + int i; + + /* Check irq line routed to the MPIC */ + for (i = 0; i < 3; i++) { + if (irq == socrates_fpga_irqs[i]) + break; + } + if (i == 3) + return NO_IRQ; + + spin_lock_irqsave(&socrates_fpga_pic_lock, flags); + cause = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(i)); + spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags); + for (i = SOCRATES_FPGA_NUM_IRQS - 1; i >= 0; i--) { + if (cause >> (i + 16)) + break; + } + return irq_linear_revmap(socrates_fpga_pic_irq_host, + (irq_hw_number_t)i); +} + +void socrates_fpga_pic_cascade(unsigned int irq, struct irq_desc *desc) +{ + unsigned int cascade_irq; + + /* + * See if we actually have an interrupt, call generic handling code if + * we do. + */ + cascade_irq = socrates_fpga_pic_get_irq(irq); + + if (cascade_irq != NO_IRQ) + generic_handle_irq(cascade_irq); + desc->chip->eoi(irq); + +} + +static void socrates_fpga_pic_ack(unsigned int virq) +{ + unsigned long flags; + unsigned int hwirq, irq_line; + uint32_t mask; + + hwirq = socrates_fpga_irq_to_hw(virq); + + irq_line = fpga_irqs[hwirq].irq_line; + spin_lock_irqsave(&socrates_fpga_pic_lock, flags); + mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line)) + & SOCRATES_FPGA_IRQ_MASK; + mask |= (1 << (hwirq + 16)); + socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask); + spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags); +} + +static void socrates_fpga_pic_mask(unsigned int virq) +{ + unsigned long flags; + unsigned int hwirq; + int irq_line; + u32 mask; + + hwirq = socrates_fpga_irq_to_hw(virq); + + irq_line = fpga_irqs[hwirq].irq_line; + spin_lock_irqsave(&socrates_fpga_pic_lock, flags); + mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line)) + & SOCRATES_FPGA_IRQ_MASK; + mask &= ~(1 << hwirq); + socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask); + spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags); +} + +static void socrates_fpga_pic_mask_ack(unsigned int virq) +{ + unsigned long flags; + unsigned int hwirq; + int irq_line; + u32 mask; + + hwirq = socrates_fpga_irq_to_hw(virq); + + irq_line = fpga_irqs[hwirq].irq_line; + spin_lock_irqsave(&socrates_fpga_pic_lock, flags); + mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line)) + & SOCRATES_FPGA_IRQ_MASK; + mask &= ~(1 << hwirq); + mask |= (1 << (hwirq + 16)); + socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask); + spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags); +} + +static void socrates_fpga_pic_unmask(unsigned int virq) +{ + unsigned long flags; + unsigned int hwirq; + int irq_line; + u32 mask; + + hwirq = socrates_fpga_irq_to_hw(virq); + + irq_line = fpga_irqs[hwirq].irq_line; + spin_lock_irqsave(&socrates_fpga_pic_lock, flags); + mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line)) + & SOCRATES_FPGA_IRQ_MASK; + mask |= (1 << hwirq); + socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask); + spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags); +} + +static void socrates_fpga_pic_eoi(unsigned int virq) +{ + unsigned long flags; + unsigned int hwirq; + int irq_line; + u32 mask; + + hwirq = socrates_fpga_irq_to_hw(virq); + + irq_line = fpga_irqs[hwirq].irq_line; + spin_lock_irqsave(&socrates_fpga_pic_lock, flags); + mask = socrates_fpga_pic_read(FPGA_PIC_IRQMASK(irq_line)) + & SOCRATES_FPGA_IRQ_MASK; + mask |= (1 << (hwirq + 16)); + socrates_fpga_pic_write(FPGA_PIC_IRQMASK(irq_line), mask); + spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags); +} + +static int socrates_fpga_pic_set_type(unsigned int virq, + unsigned int flow_type) +{ + unsigned long flags; + unsigned int hwirq; + int polarity; + u32 mask; + + hwirq = socrates_fpga_irq_to_hw(virq); + + if (fpga_irqs[hwirq].type != IRQ_TYPE_NONE) + return -EINVAL; + + switch (flow_type & IRQ_TYPE_SENSE_MASK) { + case IRQ_TYPE_LEVEL_HIGH: + polarity = 1; + break; + case IRQ_TYPE_LEVEL_LOW: + polarity = 0; + break; + default: + return -EINVAL; + } + spin_lock_irqsave(&socrates_fpga_pic_lock, flags); + mask = socrates_fpga_pic_read(FPGA_PIC_IRQCFG); + if (polarity) + mask |= (1 << hwirq); + else + mask &= ~(1 << hwirq); + socrates_fpga_pic_write(FPGA_PIC_IRQCFG, mask); + spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags); + return 0; +} + +static struct irq_chip socrates_fpga_pic_chip = { + .typename = " FPGA-PIC ", + .ack = socrates_fpga_pic_ack, + .mask = socrates_fpga_pic_mask, + .mask_ack = socrates_fpga_pic_mask_ack, + .unmask = socrates_fpga_pic_unmask, + .eoi = socrates_fpga_pic_eoi, + .set_type = socrates_fpga_pic_set_type, +}; + +static int socrates_fpga_pic_host_map(struct irq_host *h, unsigned int virq, + irq_hw_number_t hwirq) +{ + /* All interrupts are LEVEL sensitive */ + get_irq_desc(virq)->status |= IRQ_LEVEL; + set_irq_chip_and_handler(virq, &socrates_fpga_pic_chip, + handle_fasteoi_irq); + + return 0; +} + +static int socrates_fpga_pic_host_xlate(struct irq_host *h, + struct device_node *ct, u32 *intspec, unsigned int intsize, + irq_hw_number_t *out_hwirq, unsigned int *out_flags) +{ + struct socrates_fpga_irq_info *fpga_irq = &fpga_irqs[intspec[0]]; + + *out_hwirq = intspec[0]; + if (fpga_irq->type == IRQ_TYPE_NONE) { + /* type is configurable */ + if (intspec[1] != IRQ_TYPE_LEVEL_LOW && + intspec[1] != IRQ_TYPE_LEVEL_HIGH) { + pr_warning("FPGA PIC: invalid irq type, " + "setting default active low\n"); + *out_flags = IRQ_TYPE_LEVEL_LOW; + } else { + *out_flags = intspec[1]; + } + } else { + /* type is fixed */ + *out_flags = fpga_irq->type; + } + + /* Use specified interrupt routing */ + if (intspec[2] <= 2) + fpga_irq->irq_line = intspec[2]; + else + pr_warning("FPGA PIC: invalid irq routing\n"); + + return 0; +} + +static struct irq_host_ops socrates_fpga_pic_host_ops = { + .map = socrates_fpga_pic_host_map, + .xlate = socrates_fpga_pic_host_xlate, +}; + +void socrates_fpga_pic_init(struct device_node *pic) +{ + unsigned long flags; + int i; + + /* Setup an irq_host structure */ + socrates_fpga_pic_irq_host = irq_alloc_host(pic, IRQ_HOST_MAP_LINEAR, + SOCRATES_FPGA_NUM_IRQS, &socrates_fpga_pic_host_ops, + SOCRATES_FPGA_NUM_IRQS); + if (socrates_fpga_pic_irq_host == NULL) { + pr_err("FPGA PIC: Unable to allocate host\n"); + return; + } + + for (i = 0; i < 3; i++) { + socrates_fpga_irqs[i] = irq_of_parse_and_map(pic, i); + if (socrates_fpga_irqs[i] == NO_IRQ) { + pr_warning("FPGA PIC: can't get irq%d.\n", i); + continue; + } + set_irq_chained_handler(socrates_fpga_irqs[i], + socrates_fpga_pic_cascade); + } + + socrates_fpga_pic_iobase = of_iomap(pic, 0); + + spin_lock_irqsave(&socrates_fpga_pic_lock, flags); + socrates_fpga_pic_write(FPGA_PIC_IRQMASK(0), + SOCRATES_FPGA_IRQ_MASK << 16); + socrates_fpga_pic_write(FPGA_PIC_IRQMASK(1), + SOCRATES_FPGA_IRQ_MASK << 16); + socrates_fpga_pic_write(FPGA_PIC_IRQMASK(2), + SOCRATES_FPGA_IRQ_MASK << 16); + spin_unlock_irqrestore(&socrates_fpga_pic_lock, flags); + + pr_info("FPGA PIC: Setting up Socrates FPGA PIC\n"); +} diff --git a/arch/powerpc/platforms/85xx/socrates_fpga_pic.h b/arch/powerpc/platforms/85xx/socrates_fpga_pic.h new file mode 100644 index 0000000..21d7d8e --- /dev/null +++ b/arch/powerpc/platforms/85xx/socrates_fpga_pic.h @@ -0,0 +1,16 @@ +/* + * Copyright (C) 2008 Ilya Yanok, Emcraft Systems + * + * + * 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. + * + */ + +#ifndef SOCRATES_FPGA_PIC_H +#define SOCRATES_FPGA_PIC_H + +void socrates_fpga_pic_init(struct device_node *pic); + +#endif -- cgit v1.1