2927 lines
76 KiB
C
2927 lines
76 KiB
C
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/*
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* Support for the Tundra TSI148 VME-PCI Bridge Chip
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*
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* Author: Martyn Welch <martyn.welch@gefanuc.com>
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* Copyright 2008 GE Fanuc Intelligent Platforms Embedded Systems, Inc.
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*
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* Based on work by Tom Armistead and Ajit Prem
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* Copyright 2004 Motorola Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/mm.h>
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#include <linux/types.h>
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#include <linux/errno.h>
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#include <linux/proc_fs.h>
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#include <linux/pci.h>
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#include <linux/poll.h>
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#include <linux/dma-mapping.h>
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#include <linux/interrupt.h>
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#include <linux/spinlock.h>
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#include <linux/sched.h>
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#include <asm/time.h>
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#include <asm/io.h>
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#include <asm/uaccess.h>
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#include "../vme.h"
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#include "../vme_bridge.h"
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#include "vme_tsi148.h"
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static int __init tsi148_init(void);
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static int tsi148_probe(struct pci_dev *, const struct pci_device_id *);
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static void tsi148_remove(struct pci_dev *);
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static void __exit tsi148_exit(void);
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int tsi148_slave_set(struct vme_slave_resource *, int, unsigned long long,
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unsigned long long, dma_addr_t, vme_address_t, vme_cycle_t);
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int tsi148_slave_get(struct vme_slave_resource *, int *, unsigned long long *,
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unsigned long long *, dma_addr_t *, vme_address_t *, vme_cycle_t *);
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int tsi148_master_get(struct vme_master_resource *, int *, unsigned long long *,
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unsigned long long *, vme_address_t *, vme_cycle_t *, vme_width_t *);
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int tsi148_master_set(struct vme_master_resource *, int, unsigned long long,
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unsigned long long, vme_address_t, vme_cycle_t, vme_width_t);
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ssize_t tsi148_master_read(struct vme_master_resource *, void *, size_t,
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loff_t);
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ssize_t tsi148_master_write(struct vme_master_resource *, void *, size_t,
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loff_t);
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unsigned int tsi148_master_rmw(struct vme_master_resource *, unsigned int,
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unsigned int, unsigned int, loff_t);
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int tsi148_dma_list_add (struct vme_dma_list *, struct vme_dma_attr *,
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struct vme_dma_attr *, size_t);
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int tsi148_dma_list_exec(struct vme_dma_list *);
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int tsi148_dma_list_empty(struct vme_dma_list *);
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int tsi148_generate_irq(int, int);
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int tsi148_slot_get(void);
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/* Modue parameter */
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int err_chk = 0;
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/* XXX These should all be in a per device structure */
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struct vme_bridge *tsi148_bridge;
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wait_queue_head_t dma_queue[2];
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wait_queue_head_t iack_queue;
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void (*lm_callback[4])(int); /* Called in interrupt handler, be careful! */
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void *crcsr_kernel;
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dma_addr_t crcsr_bus;
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struct vme_master_resource *flush_image;
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struct mutex vme_rmw; /* Only one RMW cycle at a time */
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struct mutex vme_int; /*
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* Only one VME interrupt can be
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* generated at a time, provide locking
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*/
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struct mutex vme_irq; /* Locking for VME irq callback configuration */
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static char driver_name[] = "vme_tsi148";
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static struct pci_device_id tsi148_ids[] = {
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{ PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_TSI148) },
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{ },
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};
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static struct pci_driver tsi148_driver = {
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.name = driver_name,
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.id_table = tsi148_ids,
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.probe = tsi148_probe,
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.remove = tsi148_remove,
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};
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static void reg_join(unsigned int high, unsigned int low,
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unsigned long long *variable)
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{
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*variable = (unsigned long long)high << 32;
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*variable |= (unsigned long long)low;
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}
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static void reg_split(unsigned long long variable, unsigned int *high,
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unsigned int *low)
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{
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*low = (unsigned int)variable & 0xFFFFFFFF;
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*high = (unsigned int)(variable >> 32);
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}
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/*
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* Wakes up DMA queue.
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*/
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static u32 tsi148_DMA_irqhandler(int channel_mask)
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{
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u32 serviced = 0;
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if (channel_mask & TSI148_LCSR_INTS_DMA0S) {
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wake_up(&dma_queue[0]);
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serviced |= TSI148_LCSR_INTC_DMA0C;
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}
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if (channel_mask & TSI148_LCSR_INTS_DMA1S) {
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wake_up(&dma_queue[1]);
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serviced |= TSI148_LCSR_INTC_DMA1C;
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}
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return serviced;
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}
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/*
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* Wake up location monitor queue
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*/
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static u32 tsi148_LM_irqhandler(u32 stat)
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{
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int i;
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u32 serviced = 0;
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for (i = 0; i < 4; i++) {
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if(stat & TSI148_LCSR_INTS_LMS[i]) {
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/* We only enable interrupts if the callback is set */
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lm_callback[i](i);
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serviced |= TSI148_LCSR_INTC_LMC[i];
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}
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}
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return serviced;
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}
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/*
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* Wake up mail box queue.
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*
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* XXX This functionality is not exposed up though API.
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*/
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static u32 tsi148_MB_irqhandler(u32 stat)
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{
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int i;
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u32 val;
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u32 serviced = 0;
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for (i = 0; i < 4; i++) {
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if(stat & TSI148_LCSR_INTS_MBS[i]) {
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val = ioread32be(tsi148_bridge->base +
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TSI148_GCSR_MBOX[i]);
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printk("VME Mailbox %d received: 0x%x\n", i, val);
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serviced |= TSI148_LCSR_INTC_MBC[i];
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}
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}
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return serviced;
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}
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/*
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* Display error & status message when PERR (PCI) exception interrupt occurs.
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*/
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static u32 tsi148_PERR_irqhandler(void)
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{
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printk(KERN_ERR
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"PCI Exception at address: 0x%08x:%08x, attributes: %08x\n",
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ioread32be(tsi148_bridge->base + TSI148_LCSR_EDPAU),
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ioread32be(tsi148_bridge->base + TSI148_LCSR_EDPAL),
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ioread32be(tsi148_bridge->base + TSI148_LCSR_EDPAT)
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);
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printk(KERN_ERR
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"PCI-X attribute reg: %08x, PCI-X split completion reg: %08x\n",
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ioread32be(tsi148_bridge->base + TSI148_LCSR_EDPXA),
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ioread32be(tsi148_bridge->base + TSI148_LCSR_EDPXS)
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);
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iowrite32be(TSI148_LCSR_EDPAT_EDPCL,
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tsi148_bridge->base + TSI148_LCSR_EDPAT);
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return TSI148_LCSR_INTC_PERRC;
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}
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/*
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* Save address and status when VME error interrupt occurs.
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*/
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static u32 tsi148_VERR_irqhandler(void)
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{
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unsigned int error_addr_high, error_addr_low;
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unsigned long long error_addr;
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u32 error_attrib;
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struct vme_bus_error *error;
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error_addr_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_VEAU);
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error_addr_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_VEAL);
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error_attrib = ioread32be(tsi148_bridge->base + TSI148_LCSR_VEAT);
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reg_join(error_addr_high, error_addr_low, &error_addr);
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/* Check for exception register overflow (we have lost error data) */
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if(error_attrib & TSI148_LCSR_VEAT_VEOF) {
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printk(KERN_ERR "VME Bus Exception Overflow Occurred\n");
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}
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error = (struct vme_bus_error *)kmalloc(sizeof (struct vme_bus_error),
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GFP_ATOMIC);
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if (error) {
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error->address = error_addr;
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error->attributes = error_attrib;
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list_add_tail(&(error->list), &(tsi148_bridge->vme_errors));
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} else {
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printk(KERN_ERR
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"Unable to alloc memory for VMEbus Error reporting\n");
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printk(KERN_ERR
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"VME Bus Error at address: 0x%llx, attributes: %08x\n",
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error_addr, error_attrib);
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}
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/* Clear Status */
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iowrite32be(TSI148_LCSR_VEAT_VESCL,
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tsi148_bridge->base + TSI148_LCSR_VEAT);
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return TSI148_LCSR_INTC_VERRC;
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}
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/*
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* Wake up IACK queue.
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*/
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static u32 tsi148_IACK_irqhandler(void)
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{
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printk("tsi148_IACK_irqhandler\n");
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wake_up(&iack_queue);
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return TSI148_LCSR_INTC_IACKC;
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}
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/*
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* Calling VME bus interrupt callback if provided.
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*/
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static u32 tsi148_VIRQ_irqhandler(u32 stat)
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{
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int vec, i, serviced = 0;
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void (*call)(int, int, void *);
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void *priv_data;
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for (i = 7; i > 0; i--) {
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if (stat & (1 << i)) {
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/*
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* Note: Even though the registers are defined
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* as 32-bits in the spec, we only want to issue
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* 8-bit IACK cycles on the bus, read from offset
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* 3.
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*/
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vec = ioread8(tsi148_bridge->base +
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TSI148_LCSR_VIACK[i] + 3);
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call = tsi148_bridge->irq[i - 1].callback[vec].func;
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priv_data =
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tsi148_bridge->irq[i-1].callback[vec].priv_data;
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if (call != NULL)
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call(i, vec, priv_data);
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else
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printk("Spurilous VME interrupt, level:%x, "
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"vector:%x\n", i, vec);
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serviced |= (1 << i);
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}
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}
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return serviced;
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}
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/*
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* Top level interrupt handler. Clears appropriate interrupt status bits and
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* then calls appropriate sub handler(s).
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*/
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static irqreturn_t tsi148_irqhandler(int irq, void *dev_id)
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{
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u32 stat, enable, serviced = 0;
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/* Determine which interrupts are unmasked and set */
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enable = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEO);
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stat = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTS);
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/* Only look at unmasked interrupts */
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stat &= enable;
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if (unlikely(!stat)) {
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return IRQ_NONE;
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}
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/* Call subhandlers as appropriate */
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/* DMA irqs */
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if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S))
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serviced |= tsi148_DMA_irqhandler(stat);
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/* Location monitor irqs */
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if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S |
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TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S))
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serviced |= tsi148_LM_irqhandler(stat);
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/* Mail box irqs */
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if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S |
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TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S))
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serviced |= tsi148_MB_irqhandler(stat);
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/* PCI bus error */
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if (stat & TSI148_LCSR_INTS_PERRS)
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serviced |= tsi148_PERR_irqhandler();
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/* VME bus error */
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if (stat & TSI148_LCSR_INTS_VERRS)
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serviced |= tsi148_VERR_irqhandler();
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/* IACK irq */
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if (stat & TSI148_LCSR_INTS_IACKS)
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serviced |= tsi148_IACK_irqhandler();
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/* VME bus irqs */
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if (stat & (TSI148_LCSR_INTS_IRQ7S | TSI148_LCSR_INTS_IRQ6S |
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TSI148_LCSR_INTS_IRQ5S | TSI148_LCSR_INTS_IRQ4S |
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TSI148_LCSR_INTS_IRQ3S | TSI148_LCSR_INTS_IRQ2S |
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TSI148_LCSR_INTS_IRQ1S))
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serviced |= tsi148_VIRQ_irqhandler(stat);
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/* Clear serviced interrupts */
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iowrite32be(serviced, tsi148_bridge->base + TSI148_LCSR_INTC);
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return IRQ_HANDLED;
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}
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static int tsi148_irq_init(struct vme_bridge *bridge)
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{
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int result;
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unsigned int tmp;
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struct pci_dev *pdev;
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|
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/* Need pdev */
|
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pdev = container_of(bridge->parent, struct pci_dev, dev);
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/* Initialise list for VME bus errors */
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INIT_LIST_HEAD(&(bridge->vme_errors));
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result = request_irq(pdev->irq,
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tsi148_irqhandler,
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IRQF_SHARED,
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driver_name, pdev);
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if (result) {
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dev_err(&pdev->dev, "Can't get assigned pci irq vector %02X\n",
|
||
|
pdev->irq);
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return result;
|
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}
|
||
|
|
||
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/* Enable and unmask interrupts */
|
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tmp = TSI148_LCSR_INTEO_DMA1EO | TSI148_LCSR_INTEO_DMA0EO |
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TSI148_LCSR_INTEO_MB3EO | TSI148_LCSR_INTEO_MB2EO |
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TSI148_LCSR_INTEO_MB1EO | TSI148_LCSR_INTEO_MB0EO |
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TSI148_LCSR_INTEO_PERREO | TSI148_LCSR_INTEO_VERREO |
|
||
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TSI148_LCSR_INTEO_IACKEO;
|
||
|
|
||
|
/* XXX This leaves the following interrupts masked.
|
||
|
* TSI148_LCSR_INTEO_VIEEO
|
||
|
* TSI148_LCSR_INTEO_SYSFLEO
|
||
|
* TSI148_LCSR_INTEO_ACFLEO
|
||
|
*/
|
||
|
|
||
|
/* Don't enable Location Monitor interrupts here - they will be
|
||
|
* enabled when the location monitors are properly configured and
|
||
|
* a callback has been attached.
|
||
|
* TSI148_LCSR_INTEO_LM0EO
|
||
|
* TSI148_LCSR_INTEO_LM1EO
|
||
|
* TSI148_LCSR_INTEO_LM2EO
|
||
|
* TSI148_LCSR_INTEO_LM3EO
|
||
|
*/
|
||
|
|
||
|
/* Don't enable VME interrupts until we add a handler, else the board
|
||
|
* will respond to it and we don't want that unless it knows how to
|
||
|
* properly deal with it.
|
||
|
* TSI148_LCSR_INTEO_IRQ7EO
|
||
|
* TSI148_LCSR_INTEO_IRQ6EO
|
||
|
* TSI148_LCSR_INTEO_IRQ5EO
|
||
|
* TSI148_LCSR_INTEO_IRQ4EO
|
||
|
* TSI148_LCSR_INTEO_IRQ3EO
|
||
|
* TSI148_LCSR_INTEO_IRQ2EO
|
||
|
* TSI148_LCSR_INTEO_IRQ1EO
|
||
|
*/
|
||
|
|
||
|
iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
|
||
|
iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static void tsi148_irq_exit(struct pci_dev *pdev)
|
||
|
{
|
||
|
/* Turn off interrupts */
|
||
|
iowrite32be(0x0, tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
iowrite32be(0x0, tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
|
||
|
/* Clear all interrupts */
|
||
|
iowrite32be(0xFFFFFFFF, tsi148_bridge->base + TSI148_LCSR_INTC);
|
||
|
|
||
|
/* Detach interrupt handler */
|
||
|
free_irq(pdev->irq, pdev);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Check to see if an IACk has been received, return true (1) or false (0).
|
||
|
*/
|
||
|
int tsi148_iack_received(void)
|
||
|
{
|
||
|
u32 tmp;
|
||
|
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_VICR);
|
||
|
|
||
|
if (tmp & TSI148_LCSR_VICR_IRQS)
|
||
|
return 0;
|
||
|
else
|
||
|
return 1;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Set up an VME interrupt
|
||
|
*/
|
||
|
int tsi148_request_irq(int level, int statid,
|
||
|
void (*callback)(int level, int vector, void *priv_data),
|
||
|
void *priv_data)
|
||
|
{
|
||
|
u32 tmp;
|
||
|
|
||
|
mutex_lock(&(vme_irq));
|
||
|
|
||
|
if(tsi148_bridge->irq[level - 1].callback[statid].func) {
|
||
|
mutex_unlock(&(vme_irq));
|
||
|
printk("VME Interrupt already taken\n");
|
||
|
return -EBUSY;
|
||
|
}
|
||
|
|
||
|
|
||
|
tsi148_bridge->irq[level - 1].count++;
|
||
|
tsi148_bridge->irq[level - 1].callback[statid].priv_data = priv_data;
|
||
|
tsi148_bridge->irq[level - 1].callback[statid].func = callback;
|
||
|
|
||
|
/* Enable IRQ level */
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
|
||
|
mutex_unlock(&(vme_irq));
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Free VME interrupt
|
||
|
*/
|
||
|
void tsi148_free_irq(int level, int statid)
|
||
|
{
|
||
|
u32 tmp;
|
||
|
struct pci_dev *pdev;
|
||
|
|
||
|
mutex_lock(&(vme_irq));
|
||
|
|
||
|
tsi148_bridge->irq[level - 1].count--;
|
||
|
|
||
|
/* Disable IRQ level if no more interrupts attached at this level*/
|
||
|
if (tsi148_bridge->irq[level - 1].count == 0) {
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
|
||
|
pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
|
||
|
|
||
|
synchronize_irq(pdev->irq);
|
||
|
}
|
||
|
|
||
|
tsi148_bridge->irq[level - 1].callback[statid].func = NULL;
|
||
|
tsi148_bridge->irq[level - 1].callback[statid].priv_data = NULL;
|
||
|
|
||
|
mutex_unlock(&(vme_irq));
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Generate a VME bus interrupt at the requested level & vector. Wait for
|
||
|
* interrupt to be acked.
|
||
|
*/
|
||
|
int tsi148_generate_irq(int level, int statid)
|
||
|
{
|
||
|
u32 tmp;
|
||
|
|
||
|
mutex_lock(&(vme_int));
|
||
|
|
||
|
/* Read VICR register */
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_VICR);
|
||
|
|
||
|
/* Set Status/ID */
|
||
|
tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
|
||
|
(statid & TSI148_LCSR_VICR_STID_M);
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_VICR);
|
||
|
|
||
|
/* Assert VMEbus IRQ */
|
||
|
tmp = tmp | TSI148_LCSR_VICR_IRQL[level];
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_VICR);
|
||
|
|
||
|
/* XXX Consider implementing a timeout? */
|
||
|
wait_event_interruptible(iack_queue, tsi148_iack_received());
|
||
|
|
||
|
mutex_unlock(&(vme_int));
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Find the first error in this address range
|
||
|
*/
|
||
|
static struct vme_bus_error *tsi148_find_error(vme_address_t aspace,
|
||
|
unsigned long long address, size_t count)
|
||
|
{
|
||
|
struct list_head *err_pos;
|
||
|
struct vme_bus_error *vme_err, *valid = NULL;
|
||
|
unsigned long long bound;
|
||
|
|
||
|
bound = address + count;
|
||
|
|
||
|
/*
|
||
|
* XXX We are currently not looking at the address space when parsing
|
||
|
* for errors. This is because parsing the Address Modifier Codes
|
||
|
* is going to be quite resource intensive to do properly. We
|
||
|
* should be OK just looking at the addresses and this is certainly
|
||
|
* much better than what we had before.
|
||
|
*/
|
||
|
err_pos = NULL;
|
||
|
/* Iterate through errors */
|
||
|
list_for_each(err_pos, &(tsi148_bridge->vme_errors)) {
|
||
|
vme_err = list_entry(err_pos, struct vme_bus_error, list);
|
||
|
if((vme_err->address >= address) && (vme_err->address < bound)){
|
||
|
valid = vme_err;
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return valid;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Clear errors in the provided address range.
|
||
|
*/
|
||
|
static void tsi148_clear_errors(vme_address_t aspace,
|
||
|
unsigned long long address, size_t count)
|
||
|
{
|
||
|
struct list_head *err_pos, *temp;
|
||
|
struct vme_bus_error *vme_err;
|
||
|
unsigned long long bound;
|
||
|
|
||
|
bound = address + count;
|
||
|
|
||
|
/*
|
||
|
* XXX We are currently not looking at the address space when parsing
|
||
|
* for errors. This is because parsing the Address Modifier Codes
|
||
|
* is going to be quite resource intensive to do properly. We
|
||
|
* should be OK just looking at the addresses and this is certainly
|
||
|
* much better than what we had before.
|
||
|
*/
|
||
|
err_pos = NULL;
|
||
|
/* Iterate through errors */
|
||
|
list_for_each_safe(err_pos, temp, &(tsi148_bridge->vme_errors)) {
|
||
|
vme_err = list_entry(err_pos, struct vme_bus_error, list);
|
||
|
|
||
|
if((vme_err->address >= address) && (vme_err->address < bound)){
|
||
|
list_del(err_pos);
|
||
|
kfree(vme_err);
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Initialize a slave window with the requested attributes.
|
||
|
*/
|
||
|
int tsi148_slave_set(struct vme_slave_resource *image, int enabled,
|
||
|
unsigned long long vme_base, unsigned long long size,
|
||
|
dma_addr_t pci_base, vme_address_t aspace, vme_cycle_t cycle)
|
||
|
{
|
||
|
unsigned int i, addr = 0, granularity = 0;
|
||
|
unsigned int temp_ctl = 0;
|
||
|
unsigned int vme_base_low, vme_base_high;
|
||
|
unsigned int vme_bound_low, vme_bound_high;
|
||
|
unsigned int pci_offset_low, pci_offset_high;
|
||
|
unsigned long long vme_bound, pci_offset;
|
||
|
|
||
|
#if 0
|
||
|
printk("Set slave image %d to:\n", image->number);
|
||
|
printk("\tEnabled: %s\n", (enabled == 1)? "yes" : "no");
|
||
|
printk("\tVME Base:0x%llx\n", vme_base);
|
||
|
printk("\tWindow Size:0x%llx\n", size);
|
||
|
printk("\tPCI Base:0x%lx\n", (unsigned long)pci_base);
|
||
|
printk("\tAddress Space:0x%x\n", aspace);
|
||
|
printk("\tTransfer Cycle Properties:0x%x\n", cycle);
|
||
|
#endif
|
||
|
|
||
|
i = image->number;
|
||
|
|
||
|
switch (aspace) {
|
||
|
case VME_A16:
|
||
|
granularity = 0x10;
|
||
|
addr |= TSI148_LCSR_ITAT_AS_A16;
|
||
|
break;
|
||
|
case VME_A24:
|
||
|
granularity = 0x1000;
|
||
|
addr |= TSI148_LCSR_ITAT_AS_A24;
|
||
|
break;
|
||
|
case VME_A32:
|
||
|
granularity = 0x10000;
|
||
|
addr |= TSI148_LCSR_ITAT_AS_A32;
|
||
|
break;
|
||
|
case VME_A64:
|
||
|
granularity = 0x10000;
|
||
|
addr |= TSI148_LCSR_ITAT_AS_A64;
|
||
|
break;
|
||
|
case VME_CRCSR:
|
||
|
case VME_USER1:
|
||
|
case VME_USER2:
|
||
|
case VME_USER3:
|
||
|
case VME_USER4:
|
||
|
default:
|
||
|
printk("Invalid address space\n");
|
||
|
return -EINVAL;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Convert 64-bit variables to 2x 32-bit variables */
|
||
|
reg_split(vme_base, &vme_base_high, &vme_base_low);
|
||
|
|
||
|
/*
|
||
|
* Bound address is a valid address for the window, adjust
|
||
|
* accordingly
|
||
|
*/
|
||
|
vme_bound = vme_base + size - granularity;
|
||
|
reg_split(vme_bound, &vme_bound_high, &vme_bound_low);
|
||
|
pci_offset = (unsigned long long)pci_base - vme_base;
|
||
|
reg_split(pci_offset, &pci_offset_high, &pci_offset_low);
|
||
|
|
||
|
if (vme_base_low & (granularity - 1)) {
|
||
|
printk("Invalid VME base alignment\n");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
if (vme_bound_low & (granularity - 1)) {
|
||
|
printk("Invalid VME bound alignment\n");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
if (pci_offset_low & (granularity - 1)) {
|
||
|
printk("Invalid PCI Offset alignment\n");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
#if 0
|
||
|
printk("\tVME Bound:0x%llx\n", vme_bound);
|
||
|
printk("\tPCI Offset:0x%llx\n", pci_offset);
|
||
|
#endif
|
||
|
|
||
|
/* Disable while we are mucking around */
|
||
|
temp_ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITAT);
|
||
|
temp_ctl &= ~TSI148_LCSR_ITAT_EN;
|
||
|
iowrite32be(temp_ctl, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITAT);
|
||
|
|
||
|
/* Setup mapping */
|
||
|
iowrite32be(vme_base_high, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITSAU);
|
||
|
iowrite32be(vme_base_low, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITSAL);
|
||
|
iowrite32be(vme_bound_high, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITEAU);
|
||
|
iowrite32be(vme_bound_low, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITEAL);
|
||
|
iowrite32be(pci_offset_high, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITOFU);
|
||
|
iowrite32be(pci_offset_low, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITOFL);
|
||
|
|
||
|
/* XXX Prefetch stuff currently unsupported */
|
||
|
#if 0
|
||
|
|
||
|
for (x = 0; x < 4; x++) {
|
||
|
if ((64 << x) >= vmeIn->prefetchSize) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 4)
|
||
|
x--;
|
||
|
temp_ctl |= (x << 16);
|
||
|
|
||
|
if (vmeIn->prefetchThreshold)
|
||
|
if (vmeIn->prefetchThreshold)
|
||
|
temp_ctl |= 0x40000;
|
||
|
#endif
|
||
|
|
||
|
/* Setup 2eSST speeds */
|
||
|
temp_ctl &= ~TSI148_LCSR_ITAT_2eSSTM_M;
|
||
|
switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
|
||
|
case VME_2eSST160:
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_160;
|
||
|
break;
|
||
|
case VME_2eSST267:
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_267;
|
||
|
break;
|
||
|
case VME_2eSST320:
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_2eSSTM_320;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Setup cycle types */
|
||
|
temp_ctl &= ~(0x1F << 7);
|
||
|
if (cycle & VME_BLT)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_BLT;
|
||
|
if (cycle & VME_MBLT)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_MBLT;
|
||
|
if (cycle & VME_2eVME)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_2eVME;
|
||
|
if (cycle & VME_2eSST)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_2eSST;
|
||
|
if (cycle & VME_2eSSTB)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_2eSSTB;
|
||
|
|
||
|
/* Setup address space */
|
||
|
temp_ctl &= ~TSI148_LCSR_ITAT_AS_M;
|
||
|
temp_ctl |= addr;
|
||
|
|
||
|
temp_ctl &= ~0xF;
|
||
|
if (cycle & VME_SUPER)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_SUPR ;
|
||
|
if (cycle & VME_USER)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_NPRIV;
|
||
|
if (cycle & VME_PROG)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_PGM;
|
||
|
if (cycle & VME_DATA)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_DATA;
|
||
|
|
||
|
/* Write ctl reg without enable */
|
||
|
iowrite32be(temp_ctl, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITAT);
|
||
|
|
||
|
if (enabled)
|
||
|
temp_ctl |= TSI148_LCSR_ITAT_EN;
|
||
|
|
||
|
iowrite32be(temp_ctl, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITAT);
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Get slave window configuration.
|
||
|
*
|
||
|
* XXX Prefetch currently unsupported.
|
||
|
*/
|
||
|
int tsi148_slave_get(struct vme_slave_resource *image, int *enabled,
|
||
|
unsigned long long *vme_base, unsigned long long *size,
|
||
|
dma_addr_t *pci_base, vme_address_t *aspace, vme_cycle_t *cycle)
|
||
|
{
|
||
|
unsigned int i, granularity = 0, ctl = 0;
|
||
|
unsigned int vme_base_low, vme_base_high;
|
||
|
unsigned int vme_bound_low, vme_bound_high;
|
||
|
unsigned int pci_offset_low, pci_offset_high;
|
||
|
unsigned long long vme_bound, pci_offset;
|
||
|
|
||
|
|
||
|
i = image->number;
|
||
|
|
||
|
/* Read registers */
|
||
|
ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITAT);
|
||
|
|
||
|
vme_base_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITSAU);
|
||
|
vme_base_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITSAL);
|
||
|
vme_bound_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITEAU);
|
||
|
vme_bound_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITEAL);
|
||
|
pci_offset_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITOFU);
|
||
|
pci_offset_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITOFL);
|
||
|
|
||
|
/* Convert 64-bit variables to 2x 32-bit variables */
|
||
|
reg_join(vme_base_high, vme_base_low, vme_base);
|
||
|
reg_join(vme_bound_high, vme_bound_low, &vme_bound);
|
||
|
reg_join(pci_offset_high, pci_offset_low, &pci_offset);
|
||
|
|
||
|
*pci_base = (dma_addr_t)vme_base + pci_offset;
|
||
|
|
||
|
*enabled = 0;
|
||
|
*aspace = 0;
|
||
|
*cycle = 0;
|
||
|
|
||
|
if (ctl & TSI148_LCSR_ITAT_EN)
|
||
|
*enabled = 1;
|
||
|
|
||
|
if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A16) {
|
||
|
granularity = 0x10;
|
||
|
*aspace |= VME_A16;
|
||
|
}
|
||
|
if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A24) {
|
||
|
granularity = 0x1000;
|
||
|
*aspace |= VME_A24;
|
||
|
}
|
||
|
if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A32) {
|
||
|
granularity = 0x10000;
|
||
|
*aspace |= VME_A32;
|
||
|
}
|
||
|
if ((ctl & TSI148_LCSR_ITAT_AS_M) == TSI148_LCSR_ITAT_AS_A64) {
|
||
|
granularity = 0x10000;
|
||
|
*aspace |= VME_A64;
|
||
|
}
|
||
|
|
||
|
/* Need granularity before we set the size */
|
||
|
*size = (unsigned long long)((vme_bound - *vme_base) + granularity);
|
||
|
|
||
|
|
||
|
if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_160)
|
||
|
*cycle |= VME_2eSST160;
|
||
|
if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_267)
|
||
|
*cycle |= VME_2eSST267;
|
||
|
if ((ctl & TSI148_LCSR_ITAT_2eSSTM_M) == TSI148_LCSR_ITAT_2eSSTM_320)
|
||
|
*cycle |= VME_2eSST320;
|
||
|
|
||
|
if (ctl & TSI148_LCSR_ITAT_BLT)
|
||
|
*cycle |= VME_BLT;
|
||
|
if (ctl & TSI148_LCSR_ITAT_MBLT)
|
||
|
*cycle |= VME_MBLT;
|
||
|
if (ctl & TSI148_LCSR_ITAT_2eVME)
|
||
|
*cycle |= VME_2eVME;
|
||
|
if (ctl & TSI148_LCSR_ITAT_2eSST)
|
||
|
*cycle |= VME_2eSST;
|
||
|
if (ctl & TSI148_LCSR_ITAT_2eSSTB)
|
||
|
*cycle |= VME_2eSSTB;
|
||
|
|
||
|
if (ctl & TSI148_LCSR_ITAT_SUPR)
|
||
|
*cycle |= VME_SUPER;
|
||
|
if (ctl & TSI148_LCSR_ITAT_NPRIV)
|
||
|
*cycle |= VME_USER;
|
||
|
if (ctl & TSI148_LCSR_ITAT_PGM)
|
||
|
*cycle |= VME_PROG;
|
||
|
if (ctl & TSI148_LCSR_ITAT_DATA)
|
||
|
*cycle |= VME_DATA;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Allocate and map PCI Resource
|
||
|
*/
|
||
|
static int tsi148_alloc_resource(struct vme_master_resource *image,
|
||
|
unsigned long long size)
|
||
|
{
|
||
|
unsigned long long existing_size;
|
||
|
int retval = 0;
|
||
|
struct pci_dev *pdev;
|
||
|
|
||
|
/* Find pci_dev container of dev */
|
||
|
if (tsi148_bridge->parent == NULL) {
|
||
|
printk("Dev entry NULL\n");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
pdev = container_of(tsi148_bridge->parent, struct pci_dev, dev);
|
||
|
|
||
|
existing_size = (unsigned long long)(image->pci_resource.end -
|
||
|
image->pci_resource.start);
|
||
|
|
||
|
/* If the existing size is OK, return */
|
||
|
if (existing_size == (size - 1))
|
||
|
return 0;
|
||
|
|
||
|
if (existing_size != 0) {
|
||
|
iounmap(image->kern_base);
|
||
|
image->kern_base = NULL;
|
||
|
if (image->pci_resource.name != NULL)
|
||
|
kfree(image->pci_resource.name);
|
||
|
release_resource(&(image->pci_resource));
|
||
|
memset(&(image->pci_resource), 0, sizeof(struct resource));
|
||
|
}
|
||
|
|
||
|
if (image->pci_resource.name == NULL) {
|
||
|
image->pci_resource.name = kmalloc(VMENAMSIZ+3, GFP_KERNEL);
|
||
|
if (image->pci_resource.name == NULL) {
|
||
|
printk(KERN_ERR "Unable to allocate memory for resource"
|
||
|
" name\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_name;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
sprintf((char *)image->pci_resource.name, "%s.%d", tsi148_bridge->name,
|
||
|
image->number);
|
||
|
|
||
|
image->pci_resource.start = 0;
|
||
|
image->pci_resource.end = (unsigned long)size;
|
||
|
image->pci_resource.flags = IORESOURCE_MEM;
|
||
|
|
||
|
retval = pci_bus_alloc_resource(pdev->bus,
|
||
|
&(image->pci_resource), size, size, PCIBIOS_MIN_MEM,
|
||
|
0, NULL, NULL);
|
||
|
if (retval) {
|
||
|
printk(KERN_ERR "Failed to allocate mem resource for "
|
||
|
"window %d size 0x%lx start 0x%lx\n",
|
||
|
image->number, (unsigned long)size,
|
||
|
(unsigned long)image->pci_resource.start);
|
||
|
goto err_resource;
|
||
|
}
|
||
|
|
||
|
image->kern_base = ioremap_nocache(
|
||
|
image->pci_resource.start, size);
|
||
|
if (image->kern_base == NULL) {
|
||
|
printk(KERN_ERR "Failed to remap resource\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_remap;
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
|
||
|
iounmap(image->kern_base);
|
||
|
image->kern_base = NULL;
|
||
|
err_remap:
|
||
|
release_resource(&(image->pci_resource));
|
||
|
err_resource:
|
||
|
kfree(image->pci_resource.name);
|
||
|
memset(&(image->pci_resource), 0, sizeof(struct resource));
|
||
|
err_name:
|
||
|
return retval;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Free and unmap PCI Resource
|
||
|
*/
|
||
|
static void tsi148_free_resource(struct vme_master_resource *image)
|
||
|
{
|
||
|
iounmap(image->kern_base);
|
||
|
image->kern_base = NULL;
|
||
|
release_resource(&(image->pci_resource));
|
||
|
kfree(image->pci_resource.name);
|
||
|
memset(&(image->pci_resource), 0, sizeof(struct resource));
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Set the attributes of an outbound window.
|
||
|
*/
|
||
|
int tsi148_master_set( struct vme_master_resource *image, int enabled,
|
||
|
unsigned long long vme_base, unsigned long long size,
|
||
|
vme_address_t aspace, vme_cycle_t cycle, vme_width_t dwidth)
|
||
|
{
|
||
|
int retval = 0;
|
||
|
unsigned int i;
|
||
|
unsigned int temp_ctl = 0;
|
||
|
unsigned int pci_base_low, pci_base_high;
|
||
|
unsigned int pci_bound_low, pci_bound_high;
|
||
|
unsigned int vme_offset_low, vme_offset_high;
|
||
|
unsigned long long pci_bound, vme_offset, pci_base;
|
||
|
|
||
|
/* Verify input data */
|
||
|
if (vme_base & 0xFFFF) {
|
||
|
printk("Invalid VME Window alignment\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_window;
|
||
|
}
|
||
|
if (size < 0x10000) {
|
||
|
printk("Invalid VME Window size\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_window;
|
||
|
}
|
||
|
|
||
|
spin_lock(&(image->lock));
|
||
|
|
||
|
/* Let's allocate the resource here rather than further up the stack as
|
||
|
* it avoids pushing loads of bus dependant stuff up the stack
|
||
|
*/
|
||
|
retval = tsi148_alloc_resource(image, size);
|
||
|
if (retval) {
|
||
|
spin_unlock(&(image->lock));
|
||
|
printk(KERN_ERR "Unable to allocate memory for resource "
|
||
|
"name\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_res;
|
||
|
}
|
||
|
|
||
|
pci_base = (unsigned long long)image->pci_resource.start;
|
||
|
|
||
|
|
||
|
/*
|
||
|
* Bound address is a valid address for the window, adjust
|
||
|
* according to window granularity.
|
||
|
*/
|
||
|
pci_bound = pci_base + (size - 0x10000);
|
||
|
vme_offset = vme_base - pci_base;
|
||
|
|
||
|
/* Convert 64-bit variables to 2x 32-bit variables */
|
||
|
reg_split(pci_base, &pci_base_high, &pci_base_low);
|
||
|
reg_split(pci_bound, &pci_bound_high, &pci_bound_low);
|
||
|
reg_split(vme_offset, &vme_offset_high, &vme_offset_low);
|
||
|
|
||
|
if (pci_base_low & 0xFFFF) {
|
||
|
spin_unlock(&(image->lock));
|
||
|
printk("Invalid PCI base alignment\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_gran;
|
||
|
}
|
||
|
if (pci_bound_low & 0xFFFF) {
|
||
|
spin_unlock(&(image->lock));
|
||
|
printk("Invalid PCI bound alignment\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_gran;
|
||
|
}
|
||
|
if (vme_offset_low & 0xFFFF) {
|
||
|
spin_unlock(&(image->lock));
|
||
|
printk("Invalid VME Offset alignment\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_gran;
|
||
|
}
|
||
|
|
||
|
i = image->number;
|
||
|
|
||
|
/* Disable while we are mucking around */
|
||
|
temp_ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTAT);
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_EN;
|
||
|
iowrite32be(temp_ctl, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTAT);
|
||
|
|
||
|
/* XXX Prefetch stuff currently unsupported */
|
||
|
#if 0
|
||
|
if (vmeOut->prefetchEnable) {
|
||
|
temp_ctl |= 0x40000;
|
||
|
for (x = 0; x < 4; x++) {
|
||
|
if ((2 << x) >= vmeOut->prefetchSize)
|
||
|
break;
|
||
|
}
|
||
|
if (x == 4)
|
||
|
x = 3;
|
||
|
temp_ctl |= (x << 16);
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
/* Setup 2eSST speeds */
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_2eSSTM_M;
|
||
|
switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
|
||
|
case VME_2eSST160:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_160;
|
||
|
break;
|
||
|
case VME_2eSST267:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_267;
|
||
|
break;
|
||
|
case VME_2eSST320:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_2eSSTM_320;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Setup cycle types */
|
||
|
if (cycle & VME_BLT) {
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_TM_BLT;
|
||
|
}
|
||
|
if (cycle & VME_MBLT) {
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_TM_MBLT;
|
||
|
}
|
||
|
if (cycle & VME_2eVME) {
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_TM_2eVME;
|
||
|
}
|
||
|
if (cycle & VME_2eSST) {
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_TM_2eSST;
|
||
|
}
|
||
|
if (cycle & VME_2eSSTB) {
|
||
|
printk("Currently not setting Broadcast Select Registers\n");
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_TM_M;
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_TM_2eSSTB;
|
||
|
}
|
||
|
|
||
|
/* Setup data width */
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_DBW_M;
|
||
|
switch (dwidth) {
|
||
|
case VME_D16:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_DBW_16;
|
||
|
break;
|
||
|
case VME_D32:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_DBW_32;
|
||
|
break;
|
||
|
default:
|
||
|
spin_unlock(&(image->lock));
|
||
|
printk("Invalid data width\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_dwidth;
|
||
|
}
|
||
|
|
||
|
/* Setup address space */
|
||
|
temp_ctl &= ~TSI148_LCSR_OTAT_AMODE_M;
|
||
|
switch (aspace) {
|
||
|
case VME_A16:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_A16;
|
||
|
break;
|
||
|
case VME_A24:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_A24;
|
||
|
break;
|
||
|
case VME_A32:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_A32;
|
||
|
break;
|
||
|
case VME_A64:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_A64;
|
||
|
break;
|
||
|
case VME_CRCSR:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_CRCSR;
|
||
|
break;
|
||
|
case VME_USER1:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER1;
|
||
|
break;
|
||
|
case VME_USER2:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER2;
|
||
|
break;
|
||
|
case VME_USER3:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER3;
|
||
|
break;
|
||
|
case VME_USER4:
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_AMODE_USER4;
|
||
|
break;
|
||
|
default:
|
||
|
spin_unlock(&(image->lock));
|
||
|
printk("Invalid address space\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_aspace;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
temp_ctl &= ~(3<<4);
|
||
|
if (cycle & VME_SUPER)
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_SUP;
|
||
|
if (cycle & VME_PROG)
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_PGM;
|
||
|
|
||
|
/* Setup mapping */
|
||
|
iowrite32be(pci_base_high, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTSAU);
|
||
|
iowrite32be(pci_base_low, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTSAL);
|
||
|
iowrite32be(pci_bound_high, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTEAU);
|
||
|
iowrite32be(pci_bound_low, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTEAL);
|
||
|
iowrite32be(vme_offset_high, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTOFU);
|
||
|
iowrite32be(vme_offset_low, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTOFL);
|
||
|
|
||
|
/* XXX We need to deal with OTBS */
|
||
|
#if 0
|
||
|
iowrite32be(vmeOut->bcastSelect2esst, tsi148_bridge->base +
|
||
|
TSI148_LCSR_OT[i] + TSI148_LCSR_OFFSET_OTBS);
|
||
|
#endif
|
||
|
|
||
|
/* Write ctl reg without enable */
|
||
|
iowrite32be(temp_ctl, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTAT);
|
||
|
|
||
|
if (enabled)
|
||
|
temp_ctl |= TSI148_LCSR_OTAT_EN;
|
||
|
|
||
|
iowrite32be(temp_ctl, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTAT);
|
||
|
|
||
|
spin_unlock(&(image->lock));
|
||
|
return 0;
|
||
|
|
||
|
err_aspace:
|
||
|
err_dwidth:
|
||
|
err_gran:
|
||
|
tsi148_free_resource(image);
|
||
|
err_res:
|
||
|
err_window:
|
||
|
return retval;
|
||
|
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Set the attributes of an outbound window.
|
||
|
*
|
||
|
* XXX Not parsing prefetch information.
|
||
|
*/
|
||
|
int __tsi148_master_get( struct vme_master_resource *image, int *enabled,
|
||
|
unsigned long long *vme_base, unsigned long long *size,
|
||
|
vme_address_t *aspace, vme_cycle_t *cycle, vme_width_t *dwidth)
|
||
|
{
|
||
|
unsigned int i, ctl;
|
||
|
unsigned int pci_base_low, pci_base_high;
|
||
|
unsigned int pci_bound_low, pci_bound_high;
|
||
|
unsigned int vme_offset_low, vme_offset_high;
|
||
|
|
||
|
unsigned long long pci_base, pci_bound, vme_offset;
|
||
|
|
||
|
i = image->number;
|
||
|
|
||
|
ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTAT);
|
||
|
|
||
|
pci_base_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTSAU);
|
||
|
pci_base_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTSAL);
|
||
|
pci_bound_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTEAU);
|
||
|
pci_bound_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTEAL);
|
||
|
vme_offset_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTOFU);
|
||
|
vme_offset_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTOFL);
|
||
|
|
||
|
/* Convert 64-bit variables to 2x 32-bit variables */
|
||
|
reg_join(pci_base_high, pci_base_low, &pci_base);
|
||
|
reg_join(pci_bound_high, pci_bound_low, &pci_bound);
|
||
|
reg_join(vme_offset_high, vme_offset_low, &vme_offset);
|
||
|
|
||
|
*vme_base = pci_base + vme_offset;
|
||
|
*size = (unsigned long long)(pci_bound - pci_base) + 0x10000;
|
||
|
|
||
|
*enabled = 0;
|
||
|
*aspace = 0;
|
||
|
*cycle = 0;
|
||
|
*dwidth = 0;
|
||
|
|
||
|
if (ctl & TSI148_LCSR_OTAT_EN)
|
||
|
*enabled = 1;
|
||
|
|
||
|
/* Setup address space */
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A16)
|
||
|
*aspace |= VME_A16;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A24)
|
||
|
*aspace |= VME_A24;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A32)
|
||
|
*aspace |= VME_A32;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_A64)
|
||
|
*aspace |= VME_A64;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_CRCSR)
|
||
|
*aspace |= VME_CRCSR;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER1)
|
||
|
*aspace |= VME_USER1;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER2)
|
||
|
*aspace |= VME_USER2;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER3)
|
||
|
*aspace |= VME_USER3;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_AMODE_M) == TSI148_LCSR_OTAT_AMODE_USER4)
|
||
|
*aspace |= VME_USER4;
|
||
|
|
||
|
/* Setup 2eSST speeds */
|
||
|
if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_160)
|
||
|
*cycle |= VME_2eSST160;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_267)
|
||
|
*cycle |= VME_2eSST267;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_2eSSTM_M) == TSI148_LCSR_OTAT_2eSSTM_320)
|
||
|
*cycle |= VME_2eSST320;
|
||
|
|
||
|
/* Setup cycle types */
|
||
|
if ((ctl & TSI148_LCSR_OTAT_TM_M ) == TSI148_LCSR_OTAT_TM_SCT)
|
||
|
*cycle |= VME_SCT;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_TM_M ) == TSI148_LCSR_OTAT_TM_BLT)
|
||
|
*cycle |= VME_BLT;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_TM_M ) == TSI148_LCSR_OTAT_TM_MBLT)
|
||
|
*cycle |= VME_MBLT;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_TM_M ) == TSI148_LCSR_OTAT_TM_2eVME)
|
||
|
*cycle |= VME_2eVME;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_TM_M ) == TSI148_LCSR_OTAT_TM_2eSST)
|
||
|
*cycle |= VME_2eSST;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_TM_M ) == TSI148_LCSR_OTAT_TM_2eSSTB)
|
||
|
*cycle |= VME_2eSSTB;
|
||
|
|
||
|
if (ctl & TSI148_LCSR_OTAT_SUP)
|
||
|
*cycle |= VME_SUPER;
|
||
|
else
|
||
|
*cycle |= VME_USER;
|
||
|
|
||
|
if (ctl & TSI148_LCSR_OTAT_PGM)
|
||
|
*cycle |= VME_PROG;
|
||
|
else
|
||
|
*cycle |= VME_DATA;
|
||
|
|
||
|
/* Setup data width */
|
||
|
if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_16)
|
||
|
*dwidth = VME_D16;
|
||
|
if ((ctl & TSI148_LCSR_OTAT_DBW_M) == TSI148_LCSR_OTAT_DBW_32)
|
||
|
*dwidth = VME_D32;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
|
||
|
int tsi148_master_get( struct vme_master_resource *image, int *enabled,
|
||
|
unsigned long long *vme_base, unsigned long long *size,
|
||
|
vme_address_t *aspace, vme_cycle_t *cycle, vme_width_t *dwidth)
|
||
|
{
|
||
|
int retval;
|
||
|
|
||
|
spin_lock(&(image->lock));
|
||
|
|
||
|
retval = __tsi148_master_get(image, enabled, vme_base, size, aspace,
|
||
|
cycle, dwidth);
|
||
|
|
||
|
spin_unlock(&(image->lock));
|
||
|
|
||
|
return retval;
|
||
|
}
|
||
|
|
||
|
ssize_t tsi148_master_read(struct vme_master_resource *image, void *buf,
|
||
|
size_t count, loff_t offset)
|
||
|
{
|
||
|
int retval, enabled;
|
||
|
unsigned long long vme_base, size;
|
||
|
vme_address_t aspace;
|
||
|
vme_cycle_t cycle;
|
||
|
vme_width_t dwidth;
|
||
|
struct vme_bus_error *vme_err = NULL;
|
||
|
|
||
|
spin_lock(&(image->lock));
|
||
|
|
||
|
memcpy_fromio(buf, image->kern_base + offset, (unsigned int)count);
|
||
|
retval = count;
|
||
|
|
||
|
if (!err_chk)
|
||
|
goto skip_chk;
|
||
|
|
||
|
__tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
|
||
|
&dwidth);
|
||
|
|
||
|
vme_err = tsi148_find_error(aspace, vme_base + offset, count);
|
||
|
if(vme_err != NULL) {
|
||
|
dev_err(image->parent->parent, "First VME read error detected "
|
||
|
"an at address 0x%llx\n", vme_err->address);
|
||
|
retval = vme_err->address - (vme_base + offset);
|
||
|
/* Clear down save errors in this address range */
|
||
|
tsi148_clear_errors(aspace, vme_base + offset, count);
|
||
|
}
|
||
|
|
||
|
skip_chk:
|
||
|
spin_unlock(&(image->lock));
|
||
|
|
||
|
return retval;
|
||
|
}
|
||
|
|
||
|
|
||
|
/* XXX We need to change vme_master_resource->mtx to a spinlock so that read
|
||
|
* and write functions can be used in an interrupt context
|
||
|
*/
|
||
|
ssize_t tsi148_master_write(struct vme_master_resource *image, void *buf,
|
||
|
size_t count, loff_t offset)
|
||
|
{
|
||
|
int retval = 0, enabled;
|
||
|
unsigned long long vme_base, size;
|
||
|
vme_address_t aspace;
|
||
|
vme_cycle_t cycle;
|
||
|
vme_width_t dwidth;
|
||
|
|
||
|
struct vme_bus_error *vme_err = NULL;
|
||
|
|
||
|
spin_lock(&(image->lock));
|
||
|
|
||
|
memcpy_toio(image->kern_base + offset, buf, (unsigned int)count);
|
||
|
retval = count;
|
||
|
|
||
|
/*
|
||
|
* Writes are posted. We need to do a read on the VME bus to flush out
|
||
|
* all of the writes before we check for errors. We can't guarentee
|
||
|
* that reading the data we have just written is safe. It is believed
|
||
|
* that there isn't any read, write re-ordering, so we can read any
|
||
|
* location in VME space, so lets read the Device ID from the tsi148's
|
||
|
* own registers as mapped into CR/CSR space.
|
||
|
*
|
||
|
* We check for saved errors in the written address range/space.
|
||
|
*/
|
||
|
|
||
|
if (!err_chk)
|
||
|
goto skip_chk;
|
||
|
|
||
|
/*
|
||
|
* Get window info first, to maximise the time that the buffers may
|
||
|
* fluch on their own
|
||
|
*/
|
||
|
__tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
|
||
|
&dwidth);
|
||
|
|
||
|
ioread16(flush_image->kern_base + 0x7F000);
|
||
|
|
||
|
vme_err = tsi148_find_error(aspace, vme_base + offset, count);
|
||
|
if(vme_err != NULL) {
|
||
|
printk("First VME write error detected an at address 0x%llx\n",
|
||
|
vme_err->address);
|
||
|
retval = vme_err->address - (vme_base + offset);
|
||
|
/* Clear down save errors in this address range */
|
||
|
tsi148_clear_errors(aspace, vme_base + offset, count);
|
||
|
}
|
||
|
|
||
|
skip_chk:
|
||
|
spin_unlock(&(image->lock));
|
||
|
|
||
|
return retval;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Perform an RMW cycle on the VME bus.
|
||
|
*
|
||
|
* Requires a previously configured master window, returns final value.
|
||
|
*/
|
||
|
unsigned int tsi148_master_rmw(struct vme_master_resource *image,
|
||
|
unsigned int mask, unsigned int compare, unsigned int swap,
|
||
|
loff_t offset)
|
||
|
{
|
||
|
unsigned long long pci_addr;
|
||
|
unsigned int pci_addr_high, pci_addr_low;
|
||
|
u32 tmp, result;
|
||
|
int i;
|
||
|
|
||
|
|
||
|
/* Find the PCI address that maps to the desired VME address */
|
||
|
i = image->number;
|
||
|
|
||
|
/* Locking as we can only do one of these at a time */
|
||
|
mutex_lock(&(vme_rmw));
|
||
|
|
||
|
/* Lock image */
|
||
|
spin_lock(&(image->lock));
|
||
|
|
||
|
pci_addr_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTSAU);
|
||
|
pci_addr_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTSAL);
|
||
|
|
||
|
reg_join(pci_addr_high, pci_addr_low, &pci_addr);
|
||
|
reg_split(pci_addr + offset, &pci_addr_high, &pci_addr_low);
|
||
|
|
||
|
/* Configure registers */
|
||
|
iowrite32be(mask, tsi148_bridge->base + TSI148_LCSR_RMWEN);
|
||
|
iowrite32be(compare, tsi148_bridge->base + TSI148_LCSR_RMWC);
|
||
|
iowrite32be(swap, tsi148_bridge->base + TSI148_LCSR_RMWS);
|
||
|
iowrite32be(pci_addr_high, tsi148_bridge->base + TSI148_LCSR_RMWAU);
|
||
|
iowrite32be(pci_addr_low, tsi148_bridge->base + TSI148_LCSR_RMWAL);
|
||
|
|
||
|
/* Enable RMW */
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_VMCTRL);
|
||
|
tmp |= TSI148_LCSR_VMCTRL_RMWEN;
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_VMCTRL);
|
||
|
|
||
|
/* Kick process off with a read to the required address. */
|
||
|
result = ioread32be(image->kern_base + offset);
|
||
|
|
||
|
/* Disable RMW */
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_VMCTRL);
|
||
|
tmp &= ~TSI148_LCSR_VMCTRL_RMWEN;
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_VMCTRL);
|
||
|
|
||
|
spin_unlock(&(image->lock));
|
||
|
|
||
|
mutex_unlock(&(vme_rmw));
|
||
|
|
||
|
return result;
|
||
|
}
|
||
|
|
||
|
static int tsi148_dma_set_vme_src_attributes (u32 *attr, vme_address_t aspace,
|
||
|
vme_cycle_t cycle, vme_width_t dwidth)
|
||
|
{
|
||
|
/* Setup 2eSST speeds */
|
||
|
switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
|
||
|
case VME_2eSST160:
|
||
|
*attr |= TSI148_LCSR_DSAT_2eSSTM_160;
|
||
|
break;
|
||
|
case VME_2eSST267:
|
||
|
*attr |= TSI148_LCSR_DSAT_2eSSTM_267;
|
||
|
break;
|
||
|
case VME_2eSST320:
|
||
|
*attr |= TSI148_LCSR_DSAT_2eSSTM_320;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Setup cycle types */
|
||
|
if (cycle & VME_SCT) {
|
||
|
*attr |= TSI148_LCSR_DSAT_TM_SCT;
|
||
|
}
|
||
|
if (cycle & VME_BLT) {
|
||
|
*attr |= TSI148_LCSR_DSAT_TM_BLT;
|
||
|
}
|
||
|
if (cycle & VME_MBLT) {
|
||
|
*attr |= TSI148_LCSR_DSAT_TM_MBLT;
|
||
|
}
|
||
|
if (cycle & VME_2eVME) {
|
||
|
*attr |= TSI148_LCSR_DSAT_TM_2eVME;
|
||
|
}
|
||
|
if (cycle & VME_2eSST) {
|
||
|
*attr |= TSI148_LCSR_DSAT_TM_2eSST;
|
||
|
}
|
||
|
if (cycle & VME_2eSSTB) {
|
||
|
printk("Currently not setting Broadcast Select Registers\n");
|
||
|
*attr |= TSI148_LCSR_DSAT_TM_2eSSTB;
|
||
|
}
|
||
|
|
||
|
/* Setup data width */
|
||
|
switch (dwidth) {
|
||
|
case VME_D16:
|
||
|
*attr |= TSI148_LCSR_DSAT_DBW_16;
|
||
|
break;
|
||
|
case VME_D32:
|
||
|
*attr |= TSI148_LCSR_DSAT_DBW_32;
|
||
|
break;
|
||
|
default:
|
||
|
printk("Invalid data width\n");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
/* Setup address space */
|
||
|
switch (aspace) {
|
||
|
case VME_A16:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_A16;
|
||
|
break;
|
||
|
case VME_A24:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_A24;
|
||
|
break;
|
||
|
case VME_A32:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_A32;
|
||
|
break;
|
||
|
case VME_A64:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_A64;
|
||
|
break;
|
||
|
case VME_CRCSR:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_CRCSR;
|
||
|
break;
|
||
|
case VME_USER1:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_USER1;
|
||
|
break;
|
||
|
case VME_USER2:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_USER2;
|
||
|
break;
|
||
|
case VME_USER3:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_USER3;
|
||
|
break;
|
||
|
case VME_USER4:
|
||
|
*attr |= TSI148_LCSR_DSAT_AMODE_USER4;
|
||
|
break;
|
||
|
default:
|
||
|
printk("Invalid address space\n");
|
||
|
return -EINVAL;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (cycle & VME_SUPER)
|
||
|
*attr |= TSI148_LCSR_DSAT_SUP;
|
||
|
if (cycle & VME_PROG)
|
||
|
*attr |= TSI148_LCSR_DSAT_PGM;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
static int tsi148_dma_set_vme_dest_attributes(u32 *attr, vme_address_t aspace,
|
||
|
vme_cycle_t cycle, vme_width_t dwidth)
|
||
|
{
|
||
|
/* Setup 2eSST speeds */
|
||
|
switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
|
||
|
case VME_2eSST160:
|
||
|
*attr |= TSI148_LCSR_DDAT_2eSSTM_160;
|
||
|
break;
|
||
|
case VME_2eSST267:
|
||
|
*attr |= TSI148_LCSR_DDAT_2eSSTM_267;
|
||
|
break;
|
||
|
case VME_2eSST320:
|
||
|
*attr |= TSI148_LCSR_DDAT_2eSSTM_320;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Setup cycle types */
|
||
|
if (cycle & VME_SCT) {
|
||
|
*attr |= TSI148_LCSR_DDAT_TM_SCT;
|
||
|
}
|
||
|
if (cycle & VME_BLT) {
|
||
|
*attr |= TSI148_LCSR_DDAT_TM_BLT;
|
||
|
}
|
||
|
if (cycle & VME_MBLT) {
|
||
|
*attr |= TSI148_LCSR_DDAT_TM_MBLT;
|
||
|
}
|
||
|
if (cycle & VME_2eVME) {
|
||
|
*attr |= TSI148_LCSR_DDAT_TM_2eVME;
|
||
|
}
|
||
|
if (cycle & VME_2eSST) {
|
||
|
*attr |= TSI148_LCSR_DDAT_TM_2eSST;
|
||
|
}
|
||
|
if (cycle & VME_2eSSTB) {
|
||
|
printk("Currently not setting Broadcast Select Registers\n");
|
||
|
*attr |= TSI148_LCSR_DDAT_TM_2eSSTB;
|
||
|
}
|
||
|
|
||
|
/* Setup data width */
|
||
|
switch (dwidth) {
|
||
|
case VME_D16:
|
||
|
*attr |= TSI148_LCSR_DDAT_DBW_16;
|
||
|
break;
|
||
|
case VME_D32:
|
||
|
*attr |= TSI148_LCSR_DDAT_DBW_32;
|
||
|
break;
|
||
|
default:
|
||
|
printk("Invalid data width\n");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
/* Setup address space */
|
||
|
switch (aspace) {
|
||
|
case VME_A16:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_A16;
|
||
|
break;
|
||
|
case VME_A24:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_A24;
|
||
|
break;
|
||
|
case VME_A32:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_A32;
|
||
|
break;
|
||
|
case VME_A64:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_A64;
|
||
|
break;
|
||
|
case VME_CRCSR:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_CRCSR;
|
||
|
break;
|
||
|
case VME_USER1:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_USER1;
|
||
|
break;
|
||
|
case VME_USER2:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_USER2;
|
||
|
break;
|
||
|
case VME_USER3:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_USER3;
|
||
|
break;
|
||
|
case VME_USER4:
|
||
|
*attr |= TSI148_LCSR_DDAT_AMODE_USER4;
|
||
|
break;
|
||
|
default:
|
||
|
printk("Invalid address space\n");
|
||
|
return -EINVAL;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (cycle & VME_SUPER)
|
||
|
*attr |= TSI148_LCSR_DDAT_SUP;
|
||
|
if (cycle & VME_PROG)
|
||
|
*attr |= TSI148_LCSR_DDAT_PGM;
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Add a link list descriptor to the list
|
||
|
*
|
||
|
* XXX Need to handle 2eSST Broadcast select bits
|
||
|
*/
|
||
|
int tsi148_dma_list_add (struct vme_dma_list *list, struct vme_dma_attr *src,
|
||
|
struct vme_dma_attr *dest, size_t count)
|
||
|
{
|
||
|
struct tsi148_dma_entry *entry, *prev;
|
||
|
u32 address_high, address_low;
|
||
|
struct vme_dma_pattern *pattern_attr;
|
||
|
struct vme_dma_pci *pci_attr;
|
||
|
struct vme_dma_vme *vme_attr;
|
||
|
dma_addr_t desc_ptr;
|
||
|
int retval = 0;
|
||
|
|
||
|
/* XXX descriptor must be aligned on 64-bit boundaries */
|
||
|
entry = (struct tsi148_dma_entry *)kmalloc(
|
||
|
sizeof(struct tsi148_dma_entry), GFP_KERNEL);
|
||
|
if (entry == NULL) {
|
||
|
printk("Failed to allocate memory for dma resource "
|
||
|
"structure\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_mem;
|
||
|
}
|
||
|
|
||
|
/* Test descriptor alignment */
|
||
|
if ((unsigned long)&(entry->descriptor) & 0x7) {
|
||
|
printk("Descriptor not aligned to 8 byte boundary as "
|
||
|
"required: %p\n", &(entry->descriptor));
|
||
|
retval = -EINVAL;
|
||
|
goto err_align;
|
||
|
}
|
||
|
|
||
|
/* Given we are going to fill out the structure, we probably don't
|
||
|
* need to zero it, but better safe than sorry for now.
|
||
|
*/
|
||
|
memset(&(entry->descriptor), 0, sizeof(struct tsi148_dma_descriptor));
|
||
|
|
||
|
/* Fill out source part */
|
||
|
switch (src->type) {
|
||
|
case VME_DMA_PATTERN:
|
||
|
pattern_attr = (struct vme_dma_pattern *)src->private;
|
||
|
|
||
|
entry->descriptor.dsal = pattern_attr->pattern;
|
||
|
entry->descriptor.dsat = TSI148_LCSR_DSAT_TYP_PAT;
|
||
|
/* Default behaviour is 32 bit pattern */
|
||
|
if (pattern_attr->type & VME_DMA_PATTERN_BYTE) {
|
||
|
entry->descriptor.dsat |= TSI148_LCSR_DSAT_PSZ;
|
||
|
}
|
||
|
/* It seems that the default behaviour is to increment */
|
||
|
if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0) {
|
||
|
entry->descriptor.dsat |= TSI148_LCSR_DSAT_NIN;
|
||
|
}
|
||
|
break;
|
||
|
case VME_DMA_PCI:
|
||
|
pci_attr = (struct vme_dma_pci *)src->private;
|
||
|
|
||
|
reg_split((unsigned long long)pci_attr->address, &address_high,
|
||
|
&address_low);
|
||
|
entry->descriptor.dsau = address_high;
|
||
|
entry->descriptor.dsal = address_low;
|
||
|
entry->descriptor.dsat = TSI148_LCSR_DSAT_TYP_PCI;
|
||
|
break;
|
||
|
case VME_DMA_VME:
|
||
|
vme_attr = (struct vme_dma_vme *)src->private;
|
||
|
|
||
|
reg_split((unsigned long long)vme_attr->address, &address_high,
|
||
|
&address_low);
|
||
|
entry->descriptor.dsau = address_high;
|
||
|
entry->descriptor.dsal = address_low;
|
||
|
entry->descriptor.dsat = TSI148_LCSR_DSAT_TYP_VME;
|
||
|
|
||
|
retval = tsi148_dma_set_vme_src_attributes(
|
||
|
&(entry->descriptor.dsat), vme_attr->aspace,
|
||
|
vme_attr->cycle, vme_attr->dwidth);
|
||
|
if(retval < 0 )
|
||
|
goto err_source;
|
||
|
break;
|
||
|
default:
|
||
|
printk("Invalid source type\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_source;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Assume last link - this will be over-written by adding another */
|
||
|
entry->descriptor.dnlau = 0;
|
||
|
entry->descriptor.dnlal = TSI148_LCSR_DNLAL_LLA;
|
||
|
|
||
|
|
||
|
/* Fill out destination part */
|
||
|
switch (dest->type) {
|
||
|
case VME_DMA_PCI:
|
||
|
pci_attr = (struct vme_dma_pci *)dest->private;
|
||
|
|
||
|
reg_split((unsigned long long)pci_attr->address, &address_high,
|
||
|
&address_low);
|
||
|
entry->descriptor.ddau = address_high;
|
||
|
entry->descriptor.ddal = address_low;
|
||
|
entry->descriptor.ddat = TSI148_LCSR_DDAT_TYP_PCI;
|
||
|
break;
|
||
|
case VME_DMA_VME:
|
||
|
vme_attr = (struct vme_dma_vme *)dest->private;
|
||
|
|
||
|
reg_split((unsigned long long)vme_attr->address, &address_high,
|
||
|
&address_low);
|
||
|
entry->descriptor.ddau = address_high;
|
||
|
entry->descriptor.ddal = address_low;
|
||
|
entry->descriptor.ddat = TSI148_LCSR_DDAT_TYP_VME;
|
||
|
|
||
|
retval = tsi148_dma_set_vme_dest_attributes(
|
||
|
&(entry->descriptor.ddat), vme_attr->aspace,
|
||
|
vme_attr->cycle, vme_attr->dwidth);
|
||
|
if(retval < 0 )
|
||
|
goto err_dest;
|
||
|
break;
|
||
|
default:
|
||
|
printk("Invalid destination type\n");
|
||
|
retval = -EINVAL;
|
||
|
goto err_dest;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
/* Fill out count */
|
||
|
entry->descriptor.dcnt = (u32)count;
|
||
|
|
||
|
/* Add to list */
|
||
|
list_add_tail(&(entry->list), &(list->entries));
|
||
|
|
||
|
/* Fill out previous descriptors "Next Address" */
|
||
|
if(entry->list.prev != &(list->entries)){
|
||
|
prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
|
||
|
list);
|
||
|
/* We need the bus address for the pointer */
|
||
|
desc_ptr = virt_to_bus(&(entry->descriptor));
|
||
|
reg_split(desc_ptr, &(prev->descriptor.dnlau),
|
||
|
&(prev->descriptor.dnlal));
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
|
||
|
err_dest:
|
||
|
err_source:
|
||
|
err_align:
|
||
|
kfree(entry);
|
||
|
err_mem:
|
||
|
return retval;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Check to see if the provided DMA channel is busy.
|
||
|
*/
|
||
|
static int tsi148_dma_busy(int channel)
|
||
|
{
|
||
|
u32 tmp;
|
||
|
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_DMA[channel] +
|
||
|
TSI148_LCSR_OFFSET_DSTA);
|
||
|
|
||
|
if (tmp & TSI148_LCSR_DSTA_BSY)
|
||
|
return 0;
|
||
|
else
|
||
|
return 1;
|
||
|
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Execute a previously generated link list
|
||
|
*
|
||
|
* XXX Need to provide control register configuration.
|
||
|
*/
|
||
|
int tsi148_dma_list_exec(struct vme_dma_list *list)
|
||
|
{
|
||
|
struct vme_dma_resource *ctrlr;
|
||
|
int channel, retval = 0;
|
||
|
struct tsi148_dma_entry *entry;
|
||
|
dma_addr_t bus_addr;
|
||
|
u32 bus_addr_high, bus_addr_low;
|
||
|
u32 val, dctlreg = 0;
|
||
|
#if 0
|
||
|
int x;
|
||
|
#endif
|
||
|
|
||
|
ctrlr = list->parent;
|
||
|
|
||
|
mutex_lock(&(ctrlr->mtx));
|
||
|
|
||
|
channel = ctrlr->number;
|
||
|
|
||
|
if (! list_empty(&(ctrlr->running))) {
|
||
|
/*
|
||
|
* XXX We have an active DMA transfer and currently haven't
|
||
|
* sorted out the mechanism for "pending" DMA transfers.
|
||
|
* Return busy.
|
||
|
*/
|
||
|
/* Need to add to pending here */
|
||
|
mutex_unlock(&(ctrlr->mtx));
|
||
|
return -EBUSY;
|
||
|
} else {
|
||
|
list_add(&(list->list), &(ctrlr->running));
|
||
|
}
|
||
|
#if 0
|
||
|
/* XXX Still todo */
|
||
|
for (x = 0; x < 8; x++) { /* vme block size */
|
||
|
if ((32 << x) >= vmeDma->maxVmeBlockSize) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 8)
|
||
|
x = 7;
|
||
|
dctlreg |= (x << 12);
|
||
|
|
||
|
for (x = 0; x < 8; x++) { /* pci block size */
|
||
|
if ((32 << x) >= vmeDma->maxPciBlockSize) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 8)
|
||
|
x = 7;
|
||
|
dctlreg |= (x << 4);
|
||
|
|
||
|
if (vmeDma->vmeBackOffTimer) {
|
||
|
for (x = 1; x < 8; x++) { /* vme timer */
|
||
|
if ((1 << (x - 1)) >= vmeDma->vmeBackOffTimer) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 8)
|
||
|
x = 7;
|
||
|
dctlreg |= (x << 8);
|
||
|
}
|
||
|
|
||
|
if (vmeDma->pciBackOffTimer) {
|
||
|
for (x = 1; x < 8; x++) { /* pci timer */
|
||
|
if ((1 << (x - 1)) >= vmeDma->pciBackOffTimer) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 8)
|
||
|
x = 7;
|
||
|
dctlreg |= (x << 0);
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
/* Get first bus address and write into registers */
|
||
|
entry = list_first_entry(&(list->entries), struct tsi148_dma_entry,
|
||
|
list);
|
||
|
|
||
|
bus_addr = virt_to_bus(&(entry->descriptor));
|
||
|
|
||
|
mutex_unlock(&(ctrlr->mtx));
|
||
|
|
||
|
reg_split(bus_addr, &bus_addr_high, &bus_addr_low);
|
||
|
|
||
|
iowrite32be(bus_addr_high, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU);
|
||
|
iowrite32be(bus_addr_low, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL);
|
||
|
|
||
|
/* Start the operation */
|
||
|
iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
|
||
|
|
||
|
wait_event_interruptible(dma_queue[channel], tsi148_dma_busy(channel));
|
||
|
/*
|
||
|
* Read status register, this register is valid until we kick off a
|
||
|
* new transfer.
|
||
|
*/
|
||
|
val = ioread32be(tsi148_bridge->base + TSI148_LCSR_DMA[channel] +
|
||
|
TSI148_LCSR_OFFSET_DSTA);
|
||
|
|
||
|
if (val & TSI148_LCSR_DSTA_VBE) {
|
||
|
printk(KERN_ERR "tsi148: DMA Error. DSTA=%08X\n", val);
|
||
|
retval = -EIO;
|
||
|
}
|
||
|
|
||
|
/* Remove list from running list */
|
||
|
mutex_lock(&(ctrlr->mtx));
|
||
|
list_del(&(list->list));
|
||
|
mutex_unlock(&(ctrlr->mtx));
|
||
|
|
||
|
return retval;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Clean up a previously generated link list
|
||
|
*
|
||
|
* We have a separate function, don't assume that the chain can't be reused.
|
||
|
*/
|
||
|
int tsi148_dma_list_empty(struct vme_dma_list *list)
|
||
|
{
|
||
|
struct list_head *pos, *temp;
|
||
|
struct tsi148_dma_entry *entry;
|
||
|
|
||
|
/* detach and free each entry */
|
||
|
list_for_each_safe(pos, temp, &(list->entries)) {
|
||
|
list_del(pos);
|
||
|
entry = list_entry(pos, struct tsi148_dma_entry, list);
|
||
|
kfree(entry);
|
||
|
}
|
||
|
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* All 4 location monitors reside at the same base - this is therefore a
|
||
|
* system wide configuration.
|
||
|
*
|
||
|
* This does not enable the LM monitor - that should be done when the first
|
||
|
* callback is attached and disabled when the last callback is removed.
|
||
|
*/
|
||
|
int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
|
||
|
vme_address_t aspace, vme_cycle_t cycle)
|
||
|
{
|
||
|
u32 lm_base_high, lm_base_low, lm_ctl = 0;
|
||
|
int i;
|
||
|
|
||
|
mutex_lock(&(lm->mtx));
|
||
|
|
||
|
/* If we already have a callback attached, we can't move it! */
|
||
|
for (i = 0; i < lm->monitors; i++) {
|
||
|
if(lm_callback[i] != NULL) {
|
||
|
mutex_unlock(&(lm->mtx));
|
||
|
printk("Location monitor callback attached, can't "
|
||
|
"reset\n");
|
||
|
return -EBUSY;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
switch (aspace) {
|
||
|
case VME_A16:
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_AS_A16;
|
||
|
break;
|
||
|
case VME_A24:
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_AS_A24;
|
||
|
break;
|
||
|
case VME_A32:
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_AS_A32;
|
||
|
break;
|
||
|
case VME_A64:
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_AS_A64;
|
||
|
break;
|
||
|
default:
|
||
|
mutex_unlock(&(lm->mtx));
|
||
|
printk("Invalid address space\n");
|
||
|
return -EINVAL;
|
||
|
break;
|
||
|
}
|
||
|
|
||
|
if (cycle & VME_SUPER)
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_SUPR ;
|
||
|
if (cycle & VME_USER)
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_NPRIV;
|
||
|
if (cycle & VME_PROG)
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_PGM;
|
||
|
if (cycle & VME_DATA)
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_DATA;
|
||
|
|
||
|
reg_split(lm_base, &lm_base_high, &lm_base_low);
|
||
|
|
||
|
iowrite32be(lm_base_high, tsi148_bridge->base + TSI148_LCSR_LMBAU);
|
||
|
iowrite32be(lm_base_low, tsi148_bridge->base + TSI148_LCSR_LMBAL);
|
||
|
iowrite32be(lm_ctl, tsi148_bridge->base + TSI148_LCSR_LMAT);
|
||
|
|
||
|
mutex_unlock(&(lm->mtx));
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/* Get configuration of the callback monitor and return whether it is enabled
|
||
|
* or disabled.
|
||
|
*/
|
||
|
int tsi148_lm_get(struct vme_lm_resource *lm, unsigned long long *lm_base,
|
||
|
vme_address_t *aspace, vme_cycle_t *cycle)
|
||
|
{
|
||
|
u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
|
||
|
|
||
|
mutex_lock(&(lm->mtx));
|
||
|
|
||
|
lm_base_high = ioread32be(tsi148_bridge->base + TSI148_LCSR_LMBAU);
|
||
|
lm_base_low = ioread32be(tsi148_bridge->base + TSI148_LCSR_LMBAL);
|
||
|
lm_ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_LMAT);
|
||
|
|
||
|
reg_join(lm_base_high, lm_base_low, lm_base);
|
||
|
|
||
|
if (lm_ctl & TSI148_LCSR_LMAT_EN)
|
||
|
enabled = 1;
|
||
|
|
||
|
if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A16) {
|
||
|
*aspace |= VME_A16;
|
||
|
}
|
||
|
if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A24) {
|
||
|
*aspace |= VME_A24;
|
||
|
}
|
||
|
if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A32) {
|
||
|
*aspace |= VME_A32;
|
||
|
}
|
||
|
if ((lm_ctl & TSI148_LCSR_LMAT_AS_M) == TSI148_LCSR_LMAT_AS_A64) {
|
||
|
*aspace |= VME_A64;
|
||
|
}
|
||
|
|
||
|
if (lm_ctl & TSI148_LCSR_LMAT_SUPR)
|
||
|
*cycle |= VME_SUPER;
|
||
|
if (lm_ctl & TSI148_LCSR_LMAT_NPRIV)
|
||
|
*cycle |= VME_USER;
|
||
|
if (lm_ctl & TSI148_LCSR_LMAT_PGM)
|
||
|
*cycle |= VME_PROG;
|
||
|
if (lm_ctl & TSI148_LCSR_LMAT_DATA)
|
||
|
*cycle |= VME_DATA;
|
||
|
|
||
|
mutex_unlock(&(lm->mtx));
|
||
|
|
||
|
return enabled;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Attach a callback to a specific location monitor.
|
||
|
*
|
||
|
* Callback will be passed the monitor triggered.
|
||
|
*/
|
||
|
int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
|
||
|
void (*callback)(int))
|
||
|
{
|
||
|
u32 lm_ctl, tmp;
|
||
|
|
||
|
mutex_lock(&(lm->mtx));
|
||
|
|
||
|
/* Ensure that the location monitor is configured - need PGM or DATA */
|
||
|
lm_ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_LMAT);
|
||
|
if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) {
|
||
|
mutex_unlock(&(lm->mtx));
|
||
|
printk("Location monitor not properly configured\n");
|
||
|
return -EINVAL;
|
||
|
}
|
||
|
|
||
|
/* Check that a callback isn't already attached */
|
||
|
if (lm_callback[monitor] != NULL) {
|
||
|
mutex_unlock(&(lm->mtx));
|
||
|
printk("Existing callback attached\n");
|
||
|
return -EBUSY;
|
||
|
}
|
||
|
|
||
|
/* Attach callback */
|
||
|
lm_callback[monitor] = callback;
|
||
|
|
||
|
/* Enable Location Monitor interrupt */
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
tmp |= TSI148_LCSR_INTEN_LMEN[monitor];
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
tmp |= TSI148_LCSR_INTEO_LMEO[monitor];
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
|
||
|
/* Ensure that global Location Monitor Enable set */
|
||
|
if ((lm_ctl & TSI148_LCSR_LMAT_EN) == 0) {
|
||
|
lm_ctl |= TSI148_LCSR_LMAT_EN;
|
||
|
iowrite32be(lm_ctl, tsi148_bridge->base + TSI148_LCSR_LMAT);
|
||
|
}
|
||
|
|
||
|
mutex_unlock(&(lm->mtx));
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Detach a callback function forn a specific location monitor.
|
||
|
*/
|
||
|
int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor)
|
||
|
{
|
||
|
u32 lm_en, tmp;
|
||
|
|
||
|
mutex_lock(&(lm->mtx));
|
||
|
|
||
|
/* Disable Location Monitor and ensure previous interrupts are clear */
|
||
|
lm_en = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor];
|
||
|
iowrite32be(lm_en, tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor];
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
|
||
|
iowrite32be(TSI148_LCSR_INTC_LMC[monitor],
|
||
|
tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
|
||
|
/* Detach callback */
|
||
|
lm_callback[monitor] = NULL;
|
||
|
|
||
|
/* If all location monitors disabled, disable global Location Monitor */
|
||
|
if ((lm_en & (TSI148_LCSR_INTS_LM0S | TSI148_LCSR_INTS_LM1S |
|
||
|
TSI148_LCSR_INTS_LM2S | TSI148_LCSR_INTS_LM3S)) == 0) {
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_LMAT);
|
||
|
tmp &= ~TSI148_LCSR_LMAT_EN;
|
||
|
iowrite32be(tmp, tsi148_bridge->base + TSI148_LCSR_LMAT);
|
||
|
}
|
||
|
|
||
|
mutex_unlock(&(lm->mtx));
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Determine Geographical Addressing
|
||
|
*/
|
||
|
int tsi148_slot_get(void)
|
||
|
{
|
||
|
u32 slot = 0;
|
||
|
|
||
|
slot = ioread32be(tsi148_bridge->base + TSI148_LCSR_VSTAT);
|
||
|
slot = slot & TSI148_LCSR_VSTAT_GA_M;
|
||
|
return (int)slot;
|
||
|
}
|
||
|
|
||
|
static int __init tsi148_init(void)
|
||
|
{
|
||
|
return pci_register_driver(&tsi148_driver);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Configure CR/CSR space
|
||
|
*
|
||
|
* Access to the CR/CSR can be configured at power-up. The location of the
|
||
|
* CR/CSR registers in the CR/CSR address space is determined by the boards
|
||
|
* Auto-ID or Geographic address. This function ensures that the window is
|
||
|
* enabled at an offset consistent with the boards geopgraphic address.
|
||
|
*
|
||
|
* Each board has a 512kB window, with the highest 4kB being used for the
|
||
|
* boards registers, this means there is a fix length 508kB window which must
|
||
|
* be mapped onto PCI memory.
|
||
|
*/
|
||
|
static int tsi148_crcsr_init(struct pci_dev *pdev)
|
||
|
{
|
||
|
u32 cbar, crat, vstat;
|
||
|
u32 crcsr_bus_high, crcsr_bus_low;
|
||
|
int retval;
|
||
|
|
||
|
/* Allocate mem for CR/CSR image */
|
||
|
crcsr_kernel = pci_alloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
|
||
|
&crcsr_bus);
|
||
|
if (crcsr_kernel == NULL) {
|
||
|
dev_err(&pdev->dev, "Failed to allocate memory for CR/CSR "
|
||
|
"image\n");
|
||
|
return -ENOMEM;
|
||
|
}
|
||
|
|
||
|
memset(crcsr_kernel, 0, VME_CRCSR_BUF_SIZE);
|
||
|
|
||
|
reg_split(crcsr_bus, &crcsr_bus_high, &crcsr_bus_low);
|
||
|
|
||
|
iowrite32be(crcsr_bus_high, tsi148_bridge->base + TSI148_LCSR_CROU);
|
||
|
iowrite32be(crcsr_bus_low, tsi148_bridge->base + TSI148_LCSR_CROL);
|
||
|
|
||
|
/* Ensure that the CR/CSR is configured at the correct offset */
|
||
|
cbar = ioread32be(tsi148_bridge->base + TSI148_CBAR);
|
||
|
cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3;
|
||
|
|
||
|
vstat = tsi148_slot_get();
|
||
|
|
||
|
if (cbar != vstat) {
|
||
|
dev_info(&pdev->dev, "Setting CR/CSR offset\n");
|
||
|
iowrite32be(cbar<<3, tsi148_bridge->base + TSI148_CBAR);
|
||
|
}
|
||
|
dev_info(&pdev->dev, "CR/CSR Offset: %d\n", cbar);
|
||
|
|
||
|
crat = ioread32be(tsi148_bridge->base + TSI148_LCSR_CRAT);
|
||
|
if (crat & TSI148_LCSR_CRAT_EN) {
|
||
|
dev_info(&pdev->dev, "Enabling CR/CSR space\n");
|
||
|
iowrite32be(crat | TSI148_LCSR_CRAT_EN,
|
||
|
tsi148_bridge->base + TSI148_LCSR_CRAT);
|
||
|
} else
|
||
|
dev_info(&pdev->dev, "CR/CSR already enabled\n");
|
||
|
|
||
|
/* If we want flushed, error-checked writes, set up a window
|
||
|
* over the CR/CSR registers. We read from here to safely flush
|
||
|
* through VME writes.
|
||
|
*/
|
||
|
if(err_chk) {
|
||
|
retval = tsi148_master_set(flush_image, 1, (vstat * 0x80000),
|
||
|
0x80000, VME_CRCSR, VME_SCT, VME_D16);
|
||
|
if (retval)
|
||
|
dev_err(&pdev->dev, "Configuring flush image failed\n");
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
|
||
|
}
|
||
|
|
||
|
static void tsi148_crcsr_exit(struct pci_dev *pdev)
|
||
|
{
|
||
|
u32 crat;
|
||
|
|
||
|
/* Turn off CR/CSR space */
|
||
|
crat = ioread32be(tsi148_bridge->base + TSI148_LCSR_CRAT);
|
||
|
iowrite32be(crat & ~TSI148_LCSR_CRAT_EN,
|
||
|
tsi148_bridge->base + TSI148_LCSR_CRAT);
|
||
|
|
||
|
/* Free image */
|
||
|
iowrite32be(0, tsi148_bridge->base + TSI148_LCSR_CROU);
|
||
|
iowrite32be(0, tsi148_bridge->base + TSI148_LCSR_CROL);
|
||
|
|
||
|
pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, crcsr_kernel, crcsr_bus);
|
||
|
}
|
||
|
|
||
|
static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id)
|
||
|
{
|
||
|
int retval, i, master_num;
|
||
|
u32 data;
|
||
|
struct list_head *pos = NULL;
|
||
|
struct vme_master_resource *master_image;
|
||
|
struct vme_slave_resource *slave_image;
|
||
|
struct vme_dma_resource *dma_ctrlr;
|
||
|
struct vme_lm_resource *lm;
|
||
|
|
||
|
/* If we want to support more than one of each bridge, we need to
|
||
|
* dynamically generate this so we get one per device
|
||
|
*/
|
||
|
tsi148_bridge = (struct vme_bridge *)kmalloc(sizeof(struct vme_bridge),
|
||
|
GFP_KERNEL);
|
||
|
if (tsi148_bridge == NULL) {
|
||
|
dev_err(&pdev->dev, "Failed to allocate memory for device "
|
||
|
"structure\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_struct;
|
||
|
}
|
||
|
|
||
|
memset(tsi148_bridge, 0, sizeof(struct vme_bridge));
|
||
|
|
||
|
/* Enable the device */
|
||
|
retval = pci_enable_device(pdev);
|
||
|
if (retval) {
|
||
|
dev_err(&pdev->dev, "Unable to enable device\n");
|
||
|
goto err_enable;
|
||
|
}
|
||
|
|
||
|
/* Map Registers */
|
||
|
retval = pci_request_regions(pdev, driver_name);
|
||
|
if (retval) {
|
||
|
dev_err(&pdev->dev, "Unable to reserve resources\n");
|
||
|
goto err_resource;
|
||
|
}
|
||
|
|
||
|
/* map registers in BAR 0 */
|
||
|
tsi148_bridge->base = ioremap_nocache(pci_resource_start(pdev, 0), 4096);
|
||
|
if (!tsi148_bridge->base) {
|
||
|
dev_err(&pdev->dev, "Unable to remap CRG region\n");
|
||
|
retval = -EIO;
|
||
|
goto err_remap;
|
||
|
}
|
||
|
|
||
|
/* Check to see if the mapping worked out */
|
||
|
data = ioread32(tsi148_bridge->base + TSI148_PCFS_ID) & 0x0000FFFF;
|
||
|
if (data != PCI_VENDOR_ID_TUNDRA) {
|
||
|
dev_err(&pdev->dev, "CRG region check failed\n");
|
||
|
retval = -EIO;
|
||
|
goto err_test;
|
||
|
}
|
||
|
|
||
|
/* Initialize wait queues & mutual exclusion flags */
|
||
|
/* XXX These need to be moved to the vme_bridge structure */
|
||
|
init_waitqueue_head(&dma_queue[0]);
|
||
|
init_waitqueue_head(&dma_queue[1]);
|
||
|
init_waitqueue_head(&iack_queue);
|
||
|
mutex_init(&(vme_int));
|
||
|
mutex_init(&(vme_irq));
|
||
|
mutex_init(&(vme_rmw));
|
||
|
|
||
|
tsi148_bridge->parent = &(pdev->dev);
|
||
|
strcpy(tsi148_bridge->name, driver_name);
|
||
|
|
||
|
/* Setup IRQ */
|
||
|
retval = tsi148_irq_init(tsi148_bridge);
|
||
|
if (retval != 0) {
|
||
|
dev_err(&pdev->dev, "Chip Initialization failed.\n");
|
||
|
goto err_irq;
|
||
|
}
|
||
|
|
||
|
/* If we are going to flush writes, we need to read from the VME bus.
|
||
|
* We need to do this safely, thus we read the devices own CR/CSR
|
||
|
* register. To do this we must set up a window in CR/CSR space and
|
||
|
* hence have one less master window resource available.
|
||
|
*/
|
||
|
master_num = TSI148_MAX_MASTER;
|
||
|
if(err_chk){
|
||
|
master_num--;
|
||
|
/* XXX */
|
||
|
flush_image = (struct vme_master_resource *)kmalloc(
|
||
|
sizeof(struct vme_master_resource), GFP_KERNEL);
|
||
|
if (flush_image == NULL) {
|
||
|
dev_err(&pdev->dev, "Failed to allocate memory for "
|
||
|
"flush resource structure\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_master;
|
||
|
}
|
||
|
flush_image->parent = tsi148_bridge;
|
||
|
spin_lock_init(&(flush_image->lock));
|
||
|
flush_image->locked = 1;
|
||
|
flush_image->number = master_num;
|
||
|
flush_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
|
||
|
VME_A64;
|
||
|
flush_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
|
||
|
VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
|
||
|
VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
|
||
|
VME_PROG | VME_DATA;
|
||
|
flush_image->width_attr = VME_D16 | VME_D32;
|
||
|
memset(&(flush_image->pci_resource), 0,
|
||
|
sizeof(struct resource));
|
||
|
flush_image->kern_base = NULL;
|
||
|
}
|
||
|
|
||
|
/* Add master windows to list */
|
||
|
INIT_LIST_HEAD(&(tsi148_bridge->master_resources));
|
||
|
for (i = 0; i < master_num; i++) {
|
||
|
master_image = (struct vme_master_resource *)kmalloc(
|
||
|
sizeof(struct vme_master_resource), GFP_KERNEL);
|
||
|
if (master_image == NULL) {
|
||
|
dev_err(&pdev->dev, "Failed to allocate memory for "
|
||
|
"master resource structure\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_master;
|
||
|
}
|
||
|
master_image->parent = tsi148_bridge;
|
||
|
spin_lock_init(&(master_image->lock));
|
||
|
master_image->locked = 0;
|
||
|
master_image->number = i;
|
||
|
master_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
|
||
|
VME_A64;
|
||
|
master_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
|
||
|
VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
|
||
|
VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
|
||
|
VME_PROG | VME_DATA;
|
||
|
master_image->width_attr = VME_D16 | VME_D32;
|
||
|
memset(&(master_image->pci_resource), 0,
|
||
|
sizeof(struct resource));
|
||
|
master_image->kern_base = NULL;
|
||
|
list_add_tail(&(master_image->list),
|
||
|
&(tsi148_bridge->master_resources));
|
||
|
}
|
||
|
|
||
|
/* Add slave windows to list */
|
||
|
INIT_LIST_HEAD(&(tsi148_bridge->slave_resources));
|
||
|
for (i = 0; i < TSI148_MAX_SLAVE; i++) {
|
||
|
slave_image = (struct vme_slave_resource *)kmalloc(
|
||
|
sizeof(struct vme_slave_resource), GFP_KERNEL);
|
||
|
if (slave_image == NULL) {
|
||
|
dev_err(&pdev->dev, "Failed to allocate memory for "
|
||
|
"slave resource structure\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_slave;
|
||
|
}
|
||
|
slave_image->parent = tsi148_bridge;
|
||
|
mutex_init(&(slave_image->mtx));
|
||
|
slave_image->locked = 0;
|
||
|
slave_image->number = i;
|
||
|
slave_image->address_attr = VME_A16 | VME_A24 | VME_A32 |
|
||
|
VME_A64 | VME_CRCSR | VME_USER1 | VME_USER2 |
|
||
|
VME_USER3 | VME_USER4;
|
||
|
slave_image->cycle_attr = VME_SCT | VME_BLT | VME_MBLT |
|
||
|
VME_2eVME | VME_2eSST | VME_2eSSTB | VME_2eSST160 |
|
||
|
VME_2eSST267 | VME_2eSST320 | VME_SUPER | VME_USER |
|
||
|
VME_PROG | VME_DATA;
|
||
|
list_add_tail(&(slave_image->list),
|
||
|
&(tsi148_bridge->slave_resources));
|
||
|
}
|
||
|
|
||
|
/* Add dma engines to list */
|
||
|
INIT_LIST_HEAD(&(tsi148_bridge->dma_resources));
|
||
|
for (i = 0; i < TSI148_MAX_DMA; i++) {
|
||
|
dma_ctrlr = (struct vme_dma_resource *)kmalloc(
|
||
|
sizeof(struct vme_dma_resource), GFP_KERNEL);
|
||
|
if (dma_ctrlr == NULL) {
|
||
|
dev_err(&pdev->dev, "Failed to allocate memory for "
|
||
|
"dma resource structure\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_dma;
|
||
|
}
|
||
|
dma_ctrlr->parent = tsi148_bridge;
|
||
|
mutex_init(&(dma_ctrlr->mtx));
|
||
|
dma_ctrlr->locked = 0;
|
||
|
dma_ctrlr->number = i;
|
||
|
INIT_LIST_HEAD(&(dma_ctrlr->pending));
|
||
|
INIT_LIST_HEAD(&(dma_ctrlr->running));
|
||
|
list_add_tail(&(dma_ctrlr->list),
|
||
|
&(tsi148_bridge->dma_resources));
|
||
|
}
|
||
|
|
||
|
/* Add location monitor to list */
|
||
|
INIT_LIST_HEAD(&(tsi148_bridge->lm_resources));
|
||
|
lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
|
||
|
if (lm == NULL) {
|
||
|
dev_err(&pdev->dev, "Failed to allocate memory for "
|
||
|
"location monitor resource structure\n");
|
||
|
retval = -ENOMEM;
|
||
|
goto err_lm;
|
||
|
}
|
||
|
lm->parent = tsi148_bridge;
|
||
|
mutex_init(&(lm->mtx));
|
||
|
lm->locked = 0;
|
||
|
lm->number = 1;
|
||
|
lm->monitors = 4;
|
||
|
list_add_tail(&(lm->list), &(tsi148_bridge->lm_resources));
|
||
|
|
||
|
tsi148_bridge->slave_get = tsi148_slave_get;
|
||
|
tsi148_bridge->slave_set = tsi148_slave_set;
|
||
|
tsi148_bridge->master_get = tsi148_master_get;
|
||
|
tsi148_bridge->master_set = tsi148_master_set;
|
||
|
tsi148_bridge->master_read = tsi148_master_read;
|
||
|
tsi148_bridge->master_write = tsi148_master_write;
|
||
|
tsi148_bridge->master_rmw = tsi148_master_rmw;
|
||
|
tsi148_bridge->dma_list_add = tsi148_dma_list_add;
|
||
|
tsi148_bridge->dma_list_exec = tsi148_dma_list_exec;
|
||
|
tsi148_bridge->dma_list_empty = tsi148_dma_list_empty;
|
||
|
tsi148_bridge->request_irq = tsi148_request_irq;
|
||
|
tsi148_bridge->free_irq = tsi148_free_irq;
|
||
|
tsi148_bridge->generate_irq = tsi148_generate_irq;
|
||
|
tsi148_bridge->lm_set = tsi148_lm_set;
|
||
|
tsi148_bridge->lm_get = tsi148_lm_get;
|
||
|
tsi148_bridge->lm_attach = tsi148_lm_attach;
|
||
|
tsi148_bridge->lm_detach = tsi148_lm_detach;
|
||
|
tsi148_bridge->slot_get = tsi148_slot_get;
|
||
|
|
||
|
data = ioread32be(tsi148_bridge->base + TSI148_LCSR_VSTAT);
|
||
|
dev_info(&pdev->dev, "Board is%s the VME system controller\n",
|
||
|
(data & TSI148_LCSR_VSTAT_SCONS)? "" : " not");
|
||
|
dev_info(&pdev->dev, "VME geographical address is %d\n",
|
||
|
data & TSI148_LCSR_VSTAT_GA_M);
|
||
|
dev_info(&pdev->dev, "VME Write and flush and error check is %s\n",
|
||
|
err_chk ? "enabled" : "disabled");
|
||
|
|
||
|
if(tsi148_crcsr_init(pdev)) {
|
||
|
dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
|
||
|
goto err_crcsr;
|
||
|
|
||
|
}
|
||
|
|
||
|
/* Need to save tsi148_bridge pointer locally in link list for use in
|
||
|
* tsi148_remove()
|
||
|
*/
|
||
|
retval = vme_register_bridge(tsi148_bridge);
|
||
|
if (retval != 0) {
|
||
|
dev_err(&pdev->dev, "Chip Registration failed.\n");
|
||
|
goto err_reg;
|
||
|
}
|
||
|
|
||
|
/* Clear VME bus "board fail", and "power-up reset" lines */
|
||
|
data = ioread32be(tsi148_bridge->base + TSI148_LCSR_VSTAT);
|
||
|
data &= ~TSI148_LCSR_VSTAT_BRDFL;
|
||
|
data |= TSI148_LCSR_VSTAT_CPURST;
|
||
|
iowrite32be(data, tsi148_bridge->base + TSI148_LCSR_VSTAT);
|
||
|
|
||
|
return 0;
|
||
|
|
||
|
vme_unregister_bridge(tsi148_bridge);
|
||
|
err_reg:
|
||
|
tsi148_crcsr_exit(pdev);
|
||
|
err_crcsr:
|
||
|
err_lm:
|
||
|
/* resources are stored in link list */
|
||
|
list_for_each(pos, &(tsi148_bridge->lm_resources)) {
|
||
|
lm = list_entry(pos, struct vme_lm_resource, list);
|
||
|
list_del(pos);
|
||
|
kfree(lm);
|
||
|
}
|
||
|
err_dma:
|
||
|
/* resources are stored in link list */
|
||
|
list_for_each(pos, &(tsi148_bridge->dma_resources)) {
|
||
|
dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
|
||
|
list_del(pos);
|
||
|
kfree(dma_ctrlr);
|
||
|
}
|
||
|
err_slave:
|
||
|
/* resources are stored in link list */
|
||
|
list_for_each(pos, &(tsi148_bridge->slave_resources)) {
|
||
|
slave_image = list_entry(pos, struct vme_slave_resource, list);
|
||
|
list_del(pos);
|
||
|
kfree(slave_image);
|
||
|
}
|
||
|
err_master:
|
||
|
/* resources are stored in link list */
|
||
|
list_for_each(pos, &(tsi148_bridge->master_resources)) {
|
||
|
master_image = list_entry(pos, struct vme_master_resource, list);
|
||
|
list_del(pos);
|
||
|
kfree(master_image);
|
||
|
}
|
||
|
|
||
|
tsi148_irq_exit(pdev);
|
||
|
err_irq:
|
||
|
err_test:
|
||
|
iounmap(tsi148_bridge->base);
|
||
|
err_remap:
|
||
|
pci_release_regions(pdev);
|
||
|
err_resource:
|
||
|
pci_disable_device(pdev);
|
||
|
err_enable:
|
||
|
kfree(tsi148_bridge);
|
||
|
err_struct:
|
||
|
return retval;
|
||
|
|
||
|
}
|
||
|
|
||
|
static void tsi148_remove(struct pci_dev *pdev)
|
||
|
{
|
||
|
struct list_head *pos = NULL;
|
||
|
struct vme_master_resource *master_image;
|
||
|
struct vme_slave_resource *slave_image;
|
||
|
struct vme_dma_resource *dma_ctrlr;
|
||
|
int i;
|
||
|
|
||
|
dev_dbg(&pdev->dev, "Driver is being unloaded.\n");
|
||
|
|
||
|
/* XXX We need to find the pdev->dev in the list of vme_bridge->dev's */
|
||
|
|
||
|
/*
|
||
|
* Shutdown all inbound and outbound windows.
|
||
|
*/
|
||
|
for (i = 0; i < 8; i++) {
|
||
|
iowrite32be(0, tsi148_bridge->base + TSI148_LCSR_IT[i] +
|
||
|
TSI148_LCSR_OFFSET_ITAT);
|
||
|
iowrite32be(0, tsi148_bridge->base + TSI148_LCSR_OT[i] +
|
||
|
TSI148_LCSR_OFFSET_OTAT);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Shutdown Location monitor.
|
||
|
*/
|
||
|
iowrite32be(0, tsi148_bridge->base + TSI148_LCSR_LMAT);
|
||
|
|
||
|
/*
|
||
|
* Shutdown CRG map.
|
||
|
*/
|
||
|
iowrite32be(0, tsi148_bridge->base + TSI148_LCSR_CSRAT);
|
||
|
|
||
|
/*
|
||
|
* Clear error status.
|
||
|
*/
|
||
|
iowrite32be(0xFFFFFFFF, tsi148_bridge->base + TSI148_LCSR_EDPAT);
|
||
|
iowrite32be(0xFFFFFFFF, tsi148_bridge->base + TSI148_LCSR_VEAT);
|
||
|
iowrite32be(0x07000700, tsi148_bridge->base + TSI148_LCSR_PSTAT);
|
||
|
|
||
|
/*
|
||
|
* Remove VIRQ interrupt (if any)
|
||
|
*/
|
||
|
if (ioread32be(tsi148_bridge->base + TSI148_LCSR_VICR) & 0x800) {
|
||
|
iowrite32be(0x8000, tsi148_bridge->base + TSI148_LCSR_VICR);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Disable and clear all interrupts.
|
||
|
*/
|
||
|
iowrite32be(0x0, tsi148_bridge->base + TSI148_LCSR_INTEO);
|
||
|
iowrite32be(0xFFFFFFFF, tsi148_bridge->base + TSI148_LCSR_INTC);
|
||
|
iowrite32be(0xFFFFFFFF, tsi148_bridge->base + TSI148_LCSR_INTEN);
|
||
|
|
||
|
/*
|
||
|
* Map all Interrupts to PCI INTA
|
||
|
*/
|
||
|
iowrite32be(0x0, tsi148_bridge->base + TSI148_LCSR_INTM1);
|
||
|
iowrite32be(0x0, tsi148_bridge->base + TSI148_LCSR_INTM2);
|
||
|
|
||
|
tsi148_irq_exit(pdev);
|
||
|
|
||
|
vme_unregister_bridge(tsi148_bridge);
|
||
|
|
||
|
tsi148_crcsr_exit(pdev);
|
||
|
|
||
|
/* resources are stored in link list */
|
||
|
list_for_each(pos, &(tsi148_bridge->dma_resources)) {
|
||
|
dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
|
||
|
list_del(pos);
|
||
|
kfree(dma_ctrlr);
|
||
|
}
|
||
|
|
||
|
/* resources are stored in link list */
|
||
|
list_for_each(pos, &(tsi148_bridge->slave_resources)) {
|
||
|
slave_image = list_entry(pos, struct vme_slave_resource, list);
|
||
|
list_del(pos);
|
||
|
kfree(slave_image);
|
||
|
}
|
||
|
|
||
|
/* resources are stored in link list */
|
||
|
list_for_each(pos, &(tsi148_bridge->master_resources)) {
|
||
|
master_image = list_entry(pos, struct vme_master_resource, list);
|
||
|
list_del(pos);
|
||
|
kfree(master_image);
|
||
|
}
|
||
|
|
||
|
tsi148_irq_exit(pdev);
|
||
|
|
||
|
iounmap(tsi148_bridge->base);
|
||
|
|
||
|
pci_release_regions(pdev);
|
||
|
|
||
|
pci_disable_device(pdev);
|
||
|
|
||
|
kfree(tsi148_bridge);
|
||
|
}
|
||
|
|
||
|
static void __exit tsi148_exit(void)
|
||
|
{
|
||
|
pci_unregister_driver(&tsi148_driver);
|
||
|
|
||
|
printk(KERN_DEBUG "Driver removed.\n");
|
||
|
}
|
||
|
|
||
|
MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes");
|
||
|
module_param(err_chk, bool, 0);
|
||
|
|
||
|
MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
|
||
|
MODULE_LICENSE("GPL");
|
||
|
|
||
|
module_init(tsi148_init);
|
||
|
module_exit(tsi148_exit);
|
||
|
|
||
|
/*----------------------------------------------------------------------------
|
||
|
* STAGING
|
||
|
*--------------------------------------------------------------------------*/
|
||
|
|
||
|
#if 0
|
||
|
/*
|
||
|
* Direct Mode DMA transfer
|
||
|
*
|
||
|
* XXX Not looking at direct mode for now, we can always use link list mode
|
||
|
* with a single entry.
|
||
|
*/
|
||
|
int tsi148_dma_run(struct vme_dma_resource *resource, struct vme_dma_attr src,
|
||
|
struct vme_dma_attr dest, size_t count)
|
||
|
{
|
||
|
u32 dctlreg = 0;
|
||
|
unsigned int tmp;
|
||
|
int val;
|
||
|
int channel, x;
|
||
|
struct vmeDmaPacket *cur_dma;
|
||
|
struct tsi148_dma_descriptor *dmaLL;
|
||
|
|
||
|
/* direct mode */
|
||
|
dctlreg = 0x800000;
|
||
|
|
||
|
for (x = 0; x < 8; x++) { /* vme block size */
|
||
|
if ((32 << x) >= vmeDma->maxVmeBlockSize) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 8)
|
||
|
x = 7;
|
||
|
dctlreg |= (x << 12);
|
||
|
|
||
|
for (x = 0; x < 8; x++) { /* pci block size */
|
||
|
if ((32 << x) >= vmeDma->maxPciBlockSize) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 8)
|
||
|
x = 7;
|
||
|
dctlreg |= (x << 4);
|
||
|
|
||
|
if (vmeDma->vmeBackOffTimer) {
|
||
|
for (x = 1; x < 8; x++) { /* vme timer */
|
||
|
if ((1 << (x - 1)) >= vmeDma->vmeBackOffTimer) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 8)
|
||
|
x = 7;
|
||
|
dctlreg |= (x << 8);
|
||
|
}
|
||
|
|
||
|
if (vmeDma->pciBackOffTimer) {
|
||
|
for (x = 1; x < 8; x++) { /* pci timer */
|
||
|
if ((1 << (x - 1)) >= vmeDma->pciBackOffTimer) {
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
if (x == 8)
|
||
|
x = 7;
|
||
|
dctlreg |= (x << 0);
|
||
|
}
|
||
|
|
||
|
/* Program registers for DMA transfer */
|
||
|
iowrite32be(dmaLL->dsau, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DSAU);
|
||
|
iowrite32be(dmaLL->dsal, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DSAL);
|
||
|
iowrite32be(dmaLL->ddau, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DDAU);
|
||
|
iowrite32be(dmaLL->ddal, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DDAL);
|
||
|
iowrite32be(dmaLL->dsat, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DSAT);
|
||
|
iowrite32be(dmaLL->ddat, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DDAT);
|
||
|
iowrite32be(dmaLL->dcnt, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCNT);
|
||
|
iowrite32be(dmaLL->ddbs, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DDBS);
|
||
|
|
||
|
/* Start the operation */
|
||
|
iowrite32be(dctlreg | 0x2000000, tsi148_bridge->base +
|
||
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
|
||
|
|
||
|
tmp = ioread32be(tsi148_bridge->base + TSI148_LCSR_DMA[channel] +
|
||
|
TSI148_LCSR_OFFSET_DSTA);
|
||
|
wait_event_interruptible(dma_queue[channel], (tmp & 0x1000000) == 0);
|
||
|
|
||
|
/*
|
||
|
* Read status register, we should probably do this in some error
|
||
|
* handler rather than here so that we can be sure we haven't kicked off
|
||
|
* another DMA transfer.
|
||
|
*/
|
||
|
val = ioread32be(tsi148_bridge->base + TSI148_LCSR_DMA[channel] +
|
||
|
TSI148_LCSR_OFFSET_DSTA);
|
||
|
|
||
|
vmeDma->vmeDmaStatus = 0;
|
||
|
if (val & 0x10000000) {
|
||
|
printk(KERN_ERR
|
||
|
"DMA Error in DMA_tempe_irqhandler DSTA=%08X\n",
|
||
|
val);
|
||
|
vmeDma->vmeDmaStatus = val;
|
||
|
|
||
|
}
|
||
|
return (0);
|
||
|
}
|
||
|
#endif
|
||
|
|
||
|
#if 0
|
||
|
|
||
|
/* Global VME controller information */
|
||
|
struct pci_dev *vme_pci_dev;
|
||
|
|
||
|
/*
|
||
|
* Set the VME bus arbiter with the requested attributes
|
||
|
*/
|
||
|
int tempe_set_arbiter(vmeArbiterCfg_t * vmeArb)
|
||
|
{
|
||
|
int temp_ctl = 0;
|
||
|
int gto = 0;
|
||
|
|
||
|
temp_ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_VCTRL);
|
||
|
temp_ctl &= 0xFFEFFF00;
|
||
|
|
||
|
if (vmeArb->globalTimeoutTimer == 0xFFFFFFFF) {
|
||
|
gto = 8;
|
||
|
} else if (vmeArb->globalTimeoutTimer > 2048) {
|
||
|
return (-EINVAL);
|
||
|
} else if (vmeArb->globalTimeoutTimer == 0) {
|
||
|
gto = 0;
|
||
|
} else {
|
||
|
gto = 1;
|
||
|
while ((16 * (1 << (gto - 1))) < vmeArb->globalTimeoutTimer) {
|
||
|
gto += 1;
|
||
|
}
|
||
|
}
|
||
|
temp_ctl |= gto;
|
||
|
|
||
|
if (vmeArb->arbiterMode != VME_PRIORITY_MODE) {
|
||
|
temp_ctl |= 1 << 6;
|
||
|
}
|
||
|
|
||
|
if (vmeArb->arbiterTimeoutFlag) {
|
||
|
temp_ctl |= 1 << 7;
|
||
|
}
|
||
|
|
||
|
if (vmeArb->noEarlyReleaseFlag) {
|
||
|
temp_ctl |= 1 << 20;
|
||
|
}
|
||
|
iowrite32be(temp_ctl, tsi148_bridge->base + TSI148_LCSR_VCTRL);
|
||
|
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Return the attributes of the VME bus arbiter.
|
||
|
*/
|
||
|
int tempe_get_arbiter(vmeArbiterCfg_t * vmeArb)
|
||
|
{
|
||
|
int temp_ctl = 0;
|
||
|
int gto = 0;
|
||
|
|
||
|
|
||
|
temp_ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_VCTRL);
|
||
|
|
||
|
gto = temp_ctl & 0xF;
|
||
|
if (gto != 0) {
|
||
|
vmeArb->globalTimeoutTimer = (16 * (1 << (gto - 1)));
|
||
|
}
|
||
|
|
||
|
if (temp_ctl & (1 << 6)) {
|
||
|
vmeArb->arbiterMode = VME_R_ROBIN_MODE;
|
||
|
} else {
|
||
|
vmeArb->arbiterMode = VME_PRIORITY_MODE;
|
||
|
}
|
||
|
|
||
|
if (temp_ctl & (1 << 7)) {
|
||
|
vmeArb->arbiterTimeoutFlag = 1;
|
||
|
}
|
||
|
|
||
|
if (temp_ctl & (1 << 20)) {
|
||
|
vmeArb->noEarlyReleaseFlag = 1;
|
||
|
}
|
||
|
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Set the VME bus requestor with the requested attributes
|
||
|
*/
|
||
|
int tempe_set_requestor(vmeRequesterCfg_t * vmeReq)
|
||
|
{
|
||
|
int temp_ctl = 0;
|
||
|
|
||
|
temp_ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_VMCTRL);
|
||
|
temp_ctl &= 0xFFFF0000;
|
||
|
|
||
|
if (vmeReq->releaseMode == 1) {
|
||
|
temp_ctl |= (1 << 3);
|
||
|
}
|
||
|
|
||
|
if (vmeReq->fairMode == 1) {
|
||
|
temp_ctl |= (1 << 2);
|
||
|
}
|
||
|
|
||
|
temp_ctl |= (vmeReq->timeonTimeoutTimer & 7) << 8;
|
||
|
temp_ctl |= (vmeReq->timeoffTimeoutTimer & 7) << 12;
|
||
|
temp_ctl |= vmeReq->requestLevel;
|
||
|
|
||
|
iowrite32be(temp_ctl, tsi148_bridge->base + TSI148_LCSR_VMCTRL);
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
/*
|
||
|
* Return the attributes of the VME bus requestor
|
||
|
*/
|
||
|
int tempe_get_requestor(vmeRequesterCfg_t * vmeReq)
|
||
|
{
|
||
|
int temp_ctl = 0;
|
||
|
|
||
|
temp_ctl = ioread32be(tsi148_bridge->base + TSI148_LCSR_VMCTRL);
|
||
|
|
||
|
if (temp_ctl & 0x18) {
|
||
|
vmeReq->releaseMode = 1;
|
||
|
}
|
||
|
|
||
|
if (temp_ctl & (1 << 2)) {
|
||
|
vmeReq->fairMode = 1;
|
||
|
}
|
||
|
|
||
|
vmeReq->requestLevel = temp_ctl & 3;
|
||
|
vmeReq->timeonTimeoutTimer = (temp_ctl >> 8) & 7;
|
||
|
vmeReq->timeoffTimeoutTimer = (temp_ctl >> 12) & 7;
|
||
|
|
||
|
return (0);
|
||
|
}
|
||
|
|
||
|
|
||
|
#endif
|