vme_wb: dummy driver for kernels > 3.10, under development

2e9f6600 · Cesar Prados · 265296e7 · 2e9f6600 · 2e9f6600
Commit 2e9f6600 authored Mar 25, 2014 by Cesar Prados
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vme_wb.c vme-wb/3.10/vme_wb.c +115 -0

vme_wb.h vme-wb/3.10/vme_wb.h +89 -0

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--- a/vme-wb/3.10/vme_wb.c
+++ b/vme-wb/3.10/vme_wb.c
+/*
+* Copyright (C) 2012-2013 GSI (www.gsi.de)
+* Author: Cesar Prados <c.prados@gsi.de>
+*
+* Released according to the GNU GPL, version 2 or any later version
+*
+* VME-WB bridge for VME
+*/
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/version.h>
+#include <linux/slab.h>
+#include <linux/interrupt.h>
+#include <linux/firmware.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include "vme_wb.h"
+#include "wishbone.h"
+
+#if defined(__BIG_ENDIAN)
+#define endian_addr(width, shift) (sizeof(wb_data_t)-width)-shift
+#elif defined(__LITTLE_ENDIAN)
+#define endian_addr(width, shift) shift
+#else
+#error "unknown machine byte order (endian)"
+#endif
+
+/* Module parameters */
+static int slot[VME_MAX_DEVICES];
+static unsigned int slot_num;
+static unsigned int vmebase[VME_MAX_DEVICES];
+static unsigned int vmebase_num;
+static int vector[VME_MAX_DEVICES];
+static int level[VME_MAX_DEVICES];
+static unsigned int vector_num;
+static unsigned int vector_lev;
+static int lun[VME_MAX_DEVICES] = VME_DEFAULT_IDX;
+static unsigned int lun_num;
+static unsigned int debug = 0;
+
+static void wb_cycle(struct wishbone *wb, int on)
+{
+}
+
+static wb_data_t wb_read_cfg(struct wishbone *wb, wb_addr_t addr)
+{
+	return 0;
+}
+
+static void wb_write(struct wishbone *wb, wb_addr_t addr, wb_data_t data)
+{
+}
+
+static wb_data_t wb_read(struct wishbone *wb, wb_addr_t addr)
+{
+   return 0;
+}
+
+static int wb_request(struct wishbone *wb, struct wishbone_request *req)
+{
+	return 0;
+}
+
+static void wb_reply(struct wishbone *wb, int err, wb_data_t data)
+{
+}
+static void wb_byteenable(struct wishbone *wb, unsigned char be)
+{
+}
+
+static const struct wishbone_operations wb_ops = {
+	.cycle = wb_cycle,
+	.byteenable = wb_byteenable,
+	.write = wb_write,
+	.read = wb_read,
+	.read_cfg = wb_read_cfg,
+	.request = wb_request,
+	.reply = wb_reply,
+};
+
+static int __init vme_init(void)
+{
+	printk(KERN_ALERT "This module is under development, you should load it\n");
+	return 0;
+}
+
+static void __exit vme_exit(void)
+{
+		printk(KERN_ALERT "Removing the module \n");
+}
+
+module_init(vme_init);
+module_exit(vme_exit);
+
+module_param_array(slot, int, &slot_num, S_IRUGO);
+MODULE_PARM_DESC(slot, "Slot where VME card is installed");
+module_param_array(vmebase, uint, &vmebase_num, S_IRUGO);
+MODULE_PARM_DESC(vmebase, "VME Base address of the VME card registers");
+
+module_param_array(vector, int, &vector_num, S_IRUGO);
+MODULE_PARM_DESC(vector, "IRQ vector");
+
+module_param_array(level, int, &vector_lev, S_IRUGO);
+MODULE_PARM_DESC(level, "IRQ level");
+module_param_array(lun, int, &lun_num, S_IRUGO);
+MODULE_PARM_DESC(lun, "Index value for VME card");
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Enable debugging information");
+
+MODULE_AUTHOR("Cesar Prados Boda");
+MODULE_LICENSE("GPL");
+/* MODULE_VERSION(GIT_VERSION); */
+MODULE_VERSION("v0.1");
+MODULE_DESCRIPTION("vme wb bridge driver");
--- a/vme-wb/3.10/vme_wb.h
+++ b/vme-wb/3.10/vme_wb.h
+/*
+* Copyright (C) 2012-2013 GSI (www.gsi.de)
+* Author: Cesar Prados <c.prados@gsi.de>
+*
+* Released according to the GNU GPL, version 2 or any later version
+*
+* Driver for VME VME board.
+*/
+#ifndef __VME_H__
+#define __VME_H__
+
+#include <linux/firmware.h>
+#include <wishbone.h>
+
+#define VME_WB "vme_wb"
+#define VME_MAX_DEVICES 32
+#define VME_DEFAULT_IDX { [0 ... (VME_MAX_DEVICES-1)] = -1 }
+
+/* VME CSR offsets */
+#define FUN0ADER 0x7FF63
+#define FUN1ADER 0x7FF73
+#define WB_32_64 0x7ff33
+#define BIT_SET_REG 0x7FFFB
+#define BIT_CLR_REG 0x7FFF7
+#define IRQ_VECTOR 0x7FF5F
+#define IRQ_LEVEL 0x7FF5B
+#define VME_VENDOR_ID_OFFSET 0x24
+
+/* VME CSR VALUES */
+#define WB32 1
+#define WB64 0
+#define RESET_CORE 0x80
+#define ENABLE_CORE 0x10
+#define VME_IRQ_LEVEL 0x6
+#define VME_VENDOR_ID 0x80031
+
+/* VME WB Interdace*/
+#define ERROR_FLAG 0
+#define SDWB_ADDRESS 8
+#define CTRL 16
+#define MASTER_CTRL 24
+#define MASTER_ADD 32
+#define MASTER_DATA 40
+#define EMUL_DAT_WD 48
+#define WINDOW_OFFSET_LOW  56
+#define WINDOW_OFFSET_HIGH 64
+
+#define WBM_ADD_MASK 0xFFFFFFFC
+
+#define WINDOW_HIGH	0xFFFF0000UL
+#define WINDOW_LOW	0x0000FFFCUL
+
+
+enum vme_map_win {
+	MAP_CR_CSR = 0,		/* CR/CSR */
+	MAP_REG,		/* A32 wb space */
+	MAP_CTRL		/* A24 wb ctrl space */
+};
+
+/* Our device structure */
+struct vme_dev {
+	int lun;
+	int slot;
+	uint32_t vmebase;
+	int vector;
+	int level;
+	char driver[16];
+	char description[80];
+	struct vme_mapping *map[3];
+	/* struct work_struct   work; */
+	unsigned long irq;
+};
+
+struct vme_wb_dev {
+	struct device *vme_dev;
+	struct wishbone wb;
+	struct vme_dev vme_res;
+	struct mutex mutex;
+	unsigned int window_offset;
+	unsigned int low_addr, width, shift;
+};
+
+/* Functions and data in vme_wb.c */
+extern void vme_setup_csr_fa0(void *base, u32 vme, unsigned vector,
+			      unsigned level);
+extern int vme_unmap_window(struct vme_wb_dev *vetar,
+			    enum vme_map_win map_type);
+extern int vme_map_window(struct vme_wb_dev *vetar, enum vme_map_win map_type);
+#endif /* __VME_H__ */