~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/powerpc/platforms/85xx/ge_imp3a.c

Version: ~ [ linux-5.11-rc3 ] ~ [ linux-5.10.7 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.89 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.167 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.215 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.251 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.251 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * GE IMP3A Board Setup
  3  *
  4  * Author Martyn Welch <martyn.welch@ge.com>
  5  *
  6  * Copyright 2010 GE Intelligent Platforms Embedded Systems, Inc.
  7  *
  8  * This program is free software; you can redistribute  it and/or modify it
  9  * under  the terms of  the GNU General  Public License as published by the
 10  * Free Software Foundation;  either version 2 of the  License, or (at your
 11  * option) any later version.
 12  *
 13  * Based on: mpc85xx_ds.c (MPC85xx DS Board Setup)
 14  * Copyright 2007 Freescale Semiconductor Inc.
 15  */
 16 
 17 #include <linux/stddef.h>
 18 #include <linux/kernel.h>
 19 #include <linux/pci.h>
 20 #include <linux/kdev_t.h>
 21 #include <linux/delay.h>
 22 #include <linux/seq_file.h>
 23 #include <linux/interrupt.h>
 24 #include <linux/of_platform.h>
 25 
 26 #include <asm/time.h>
 27 #include <asm/machdep.h>
 28 #include <asm/pci-bridge.h>
 29 #include <mm/mmu_decl.h>
 30 #include <asm/prom.h>
 31 #include <asm/udbg.h>
 32 #include <asm/mpic.h>
 33 #include <asm/swiotlb.h>
 34 #include <asm/nvram.h>
 35 
 36 #include <sysdev/fsl_soc.h>
 37 #include <sysdev/fsl_pci.h>
 38 #include "smp.h"
 39 
 40 #include "mpc85xx.h"
 41 #include <sysdev/ge/ge_pic.h>
 42 
 43 void __iomem *imp3a_regs;
 44 
 45 void __init ge_imp3a_pic_init(void)
 46 {
 47         struct mpic *mpic;
 48         struct device_node *np;
 49         struct device_node *cascade_node = NULL;
 50         unsigned long root = of_get_flat_dt_root();
 51 
 52         if (of_flat_dt_is_compatible(root, "fsl,MPC8572DS-CAMP")) {
 53                 mpic = mpic_alloc(NULL, 0,
 54                         MPIC_NO_RESET |
 55                         MPIC_BIG_ENDIAN |
 56                         MPIC_SINGLE_DEST_CPU,
 57                         0, 256, " OpenPIC  ");
 58         } else {
 59                 mpic = mpic_alloc(NULL, 0,
 60                           MPIC_BIG_ENDIAN |
 61                           MPIC_SINGLE_DEST_CPU,
 62                         0, 256, " OpenPIC  ");
 63         }
 64 
 65         BUG_ON(mpic == NULL);
 66         mpic_init(mpic);
 67         /*
 68          * There is a simple interrupt handler in the main FPGA, this needs
 69          * to be cascaded into the MPIC
 70          */
 71         for_each_node_by_type(np, "interrupt-controller")
 72                 if (of_device_is_compatible(np, "gef,fpga-pic-1.00")) {
 73                         cascade_node = np;
 74                         break;
 75                 }
 76 
 77         if (cascade_node == NULL) {
 78                 printk(KERN_WARNING "IMP3A: No FPGA PIC\n");
 79                 return;
 80         }
 81 
 82         gef_pic_init(cascade_node);
 83         of_node_put(cascade_node);
 84 }
 85 
 86 static void ge_imp3a_pci_assign_primary(void)
 87 {
 88 #ifdef CONFIG_PCI
 89         struct device_node *np;
 90         struct resource rsrc;
 91 
 92         for_each_node_by_type(np, "pci") {
 93                 if (of_device_is_compatible(np, "fsl,mpc8540-pci") ||
 94                     of_device_is_compatible(np, "fsl,mpc8548-pcie") ||
 95                     of_device_is_compatible(np, "fsl,p2020-pcie")) {
 96                         of_address_to_resource(np, 0, &rsrc);
 97                         if ((rsrc.start & 0xfffff) == 0x9000)
 98                                 fsl_pci_primary = np;
 99                 }
100         }
101 #endif
102 }
103 
104 /*
105  * Setup the architecture
106  */
107 static void __init ge_imp3a_setup_arch(void)
108 {
109         struct device_node *regs;
110 
111         if (ppc_md.progress)
112                 ppc_md.progress("ge_imp3a_setup_arch()", 0);
113 
114         mpc85xx_smp_init();
115 
116         ge_imp3a_pci_assign_primary();
117 
118         swiotlb_detect_4g();
119 
120         /* Remap basic board registers */
121         regs = of_find_compatible_node(NULL, NULL, "ge,imp3a-fpga-regs");
122         if (regs) {
123                 imp3a_regs = of_iomap(regs, 0);
124                 if (imp3a_regs == NULL)
125                         printk(KERN_WARNING "Unable to map board registers\n");
126                 of_node_put(regs);
127         }
128 
129 #if defined(CONFIG_MMIO_NVRAM)
130         mmio_nvram_init();
131 #endif
132 
133         printk(KERN_INFO "GE Intelligent Platforms IMP3A 3U cPCI SBC\n");
134 }
135 
136 /* Return the PCB revision */
137 static unsigned int ge_imp3a_get_pcb_rev(void)
138 {
139         unsigned int reg;
140 
141         reg = ioread16(imp3a_regs);
142         return (reg >> 8) & 0xff;
143 }
144 
145 /* Return the board (software) revision */
146 static unsigned int ge_imp3a_get_board_rev(void)
147 {
148         unsigned int reg;
149 
150         reg = ioread16(imp3a_regs + 0x2);
151         return reg & 0xff;
152 }
153 
154 /* Return the FPGA revision */
155 static unsigned int ge_imp3a_get_fpga_rev(void)
156 {
157         unsigned int reg;
158 
159         reg = ioread16(imp3a_regs + 0x2);
160         return (reg >> 8) & 0xff;
161 }
162 
163 /* Return compactPCI Geographical Address */
164 static unsigned int ge_imp3a_get_cpci_geo_addr(void)
165 {
166         unsigned int reg;
167 
168         reg = ioread16(imp3a_regs + 0x6);
169         return (reg & 0x0f00) >> 8;
170 }
171 
172 /* Return compactPCI System Controller Status */
173 static unsigned int ge_imp3a_get_cpci_is_syscon(void)
174 {
175         unsigned int reg;
176 
177         reg = ioread16(imp3a_regs + 0x6);
178         return reg & (1 << 12);
179 }
180 
181 static void ge_imp3a_show_cpuinfo(struct seq_file *m)
182 {
183         seq_printf(m, "Vendor\t\t: GE Intelligent Platforms\n");
184 
185         seq_printf(m, "Revision\t: %u%c\n", ge_imp3a_get_pcb_rev(),
186                 ('A' + ge_imp3a_get_board_rev() - 1));
187 
188         seq_printf(m, "FPGA Revision\t: %u\n", ge_imp3a_get_fpga_rev());
189 
190         seq_printf(m, "cPCI geo. addr\t: %u\n", ge_imp3a_get_cpci_geo_addr());
191 
192         seq_printf(m, "cPCI syscon\t: %s\n",
193                 ge_imp3a_get_cpci_is_syscon() ? "yes" : "no");
194 }
195 
196 /*
197  * Called very early, device-tree isn't unflattened
198  */
199 static int __init ge_imp3a_probe(void)
200 {
201         unsigned long root = of_get_flat_dt_root();
202 
203         return of_flat_dt_is_compatible(root, "ge,IMP3A");
204 }
205 
206 machine_arch_initcall(ge_imp3a, mpc85xx_common_publish_devices);
207 
208 machine_arch_initcall(ge_imp3a, swiotlb_setup_bus_notifier);
209 
210 define_machine(ge_imp3a) {
211         .name                   = "GE_IMP3A",
212         .probe                  = ge_imp3a_probe,
213         .setup_arch             = ge_imp3a_setup_arch,
214         .init_IRQ               = ge_imp3a_pic_init,
215         .show_cpuinfo           = ge_imp3a_show_cpuinfo,
216 #ifdef CONFIG_PCI
217         .pcibios_fixup_bus      = fsl_pcibios_fixup_bus,
218 #endif
219         .get_irq                = mpic_get_irq,
220         .restart                = fsl_rstcr_restart,
221         .calibrate_decr         = generic_calibrate_decr,
222         .progress               = udbg_progress,
223 };
224 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp