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75c66b6db7
Signed-off-by: Dmitry Kalinkin <dmitry.kalinkin@gmail.com> Cc: Igor Alekseev <igor.alekseev@itep.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2770 lines
73 KiB
C
2770 lines
73 KiB
C
/*
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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@ge.com>
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* Copyright 2008 GE 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/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 <linux/slab.h>
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#include <linux/time.h>
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#include <linux/io.h>
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#include <linux/uaccess.h>
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#include <linux/byteorder/generic.h>
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#include <linux/vme.h>
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#include "../vme_bridge.h"
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#include "vme_tsi148.h"
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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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/* Module parameter */
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static bool err_chk;
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static int geoid;
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static const char driver_name[] = "vme_tsi148";
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static const 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(struct tsi148_driver *bridge,
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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(&bridge->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(&bridge->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(struct tsi148_driver *bridge, 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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bridge->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(struct vme_bridge *tsi148_bridge, 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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struct tsi148_driver *bridge;
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bridge = tsi148_bridge->driver_priv;
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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(bridge->base + TSI148_GCSR_MBOX[i]);
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dev_err(tsi148_bridge->parent, "VME Mailbox %d received"
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": 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(struct vme_bridge *tsi148_bridge)
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{
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struct tsi148_driver *bridge;
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bridge = tsi148_bridge->driver_priv;
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dev_err(tsi148_bridge->parent, "PCI Exception at address: 0x%08x:%08x, "
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"attributes: %08x\n",
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ioread32be(bridge->base + TSI148_LCSR_EDPAU),
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ioread32be(bridge->base + TSI148_LCSR_EDPAL),
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ioread32be(bridge->base + TSI148_LCSR_EDPAT));
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dev_err(tsi148_bridge->parent, "PCI-X attribute reg: %08x, PCI-X split "
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"completion reg: %08x\n",
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ioread32be(bridge->base + TSI148_LCSR_EDPXA),
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ioread32be(bridge->base + TSI148_LCSR_EDPXS));
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iowrite32be(TSI148_LCSR_EDPAT_EDPCL, 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(struct vme_bridge *tsi148_bridge)
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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 = NULL;
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struct tsi148_driver *bridge;
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bridge = tsi148_bridge->driver_priv;
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error_addr_high = ioread32be(bridge->base + TSI148_LCSR_VEAU);
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error_addr_low = ioread32be(bridge->base + TSI148_LCSR_VEAL);
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error_attrib = ioread32be(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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dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow "
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"Occurred\n");
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}
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if (err_chk) {
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error = kmalloc(sizeof(struct vme_bus_error), 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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dev_err(tsi148_bridge->parent,
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"Unable to alloc memory for VMEbus Error reporting\n");
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}
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}
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if (!error) {
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dev_err(tsi148_bridge->parent,
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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, 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(struct tsi148_driver *bridge)
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{
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wake_up(&bridge->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(struct vme_bridge *tsi148_bridge,
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u32 stat)
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{
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int vec, i, serviced = 0;
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struct tsi148_driver *bridge;
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bridge = tsi148_bridge->driver_priv;
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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 as
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* 32-bits in the spec, we only want to issue 8-bit
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* IACK cycles on the bus, read from offset 3.
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*/
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vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3);
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vme_irq_handler(tsi148_bridge, 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 *ptr)
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{
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u32 stat, enable, serviced = 0;
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struct vme_bridge *tsi148_bridge;
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struct tsi148_driver *bridge;
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tsi148_bridge = ptr;
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bridge = tsi148_bridge->driver_priv;
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/* Determine which interrupts are unmasked and set */
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enable = ioread32be(bridge->base + TSI148_LCSR_INTEO);
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stat = ioread32be(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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/* 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(bridge, 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(bridge, 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(tsi148_bridge, 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(tsi148_bridge);
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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(tsi148_bridge);
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/* IACK irq */
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if (stat & TSI148_LCSR_INTS_IACKS)
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serviced |= tsi148_IACK_irqhandler(bridge);
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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(tsi148_bridge, stat);
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/* Clear serviced interrupts */
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iowrite32be(serviced, 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 *tsi148_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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struct tsi148_driver *bridge;
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pdev = to_pci_dev(tsi148_bridge->parent);
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bridge = tsi148_bridge->driver_priv;
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/* Initialise list for VME bus errors */
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INIT_LIST_HEAD(&tsi148_bridge->vme_errors);
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mutex_init(&tsi148_bridge->irq_mtx);
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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, tsi148_bridge);
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if (result) {
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dev_err(tsi148_bridge->parent, "Can't get assigned pci irq "
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"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;
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/* This leaves the following interrupts masked.
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* TSI148_LCSR_INTEO_VIEEO
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* TSI148_LCSR_INTEO_SYSFLEO
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* TSI148_LCSR_INTEO_ACFLEO
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*/
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/* Don't enable Location Monitor interrupts here - they will be
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* enabled when the location monitors are properly configured and
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* a callback has been attached.
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* TSI148_LCSR_INTEO_LM0EO
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* TSI148_LCSR_INTEO_LM1EO
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* TSI148_LCSR_INTEO_LM2EO
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* TSI148_LCSR_INTEO_LM3EO
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*/
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/* Don't enable VME interrupts until we add a handler, else the board
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* will respond to it and we don't want that unless it knows how to
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* properly deal with it.
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* TSI148_LCSR_INTEO_IRQ7EO
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* TSI148_LCSR_INTEO_IRQ6EO
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* TSI148_LCSR_INTEO_IRQ5EO
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* TSI148_LCSR_INTEO_IRQ4EO
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* TSI148_LCSR_INTEO_IRQ3EO
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* TSI148_LCSR_INTEO_IRQ2EO
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* TSI148_LCSR_INTEO_IRQ1EO
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*/
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iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
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iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
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return 0;
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}
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static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge,
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struct pci_dev *pdev)
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{
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struct tsi148_driver *bridge = tsi148_bridge->driver_priv;
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/* Turn off interrupts */
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iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO);
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iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN);
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/* Clear all interrupts */
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iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC);
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/* Detach interrupt handler */
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free_irq(pdev->irq, tsi148_bridge);
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}
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/*
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* Check to see if an IACk has been received, return true (1) or false (0).
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*/
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static int tsi148_iack_received(struct tsi148_driver *bridge)
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{
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u32 tmp;
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tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
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if (tmp & TSI148_LCSR_VICR_IRQS)
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return 0;
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else
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return 1;
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}
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/*
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* Configure VME interrupt
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*/
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static void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level,
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int state, int sync)
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{
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struct pci_dev *pdev;
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u32 tmp;
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struct tsi148_driver *bridge;
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bridge = tsi148_bridge->driver_priv;
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/* We need to do the ordering differently for enabling and disabling */
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if (state == 0) {
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tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
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tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
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iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
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tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
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tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
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iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
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if (sync != 0) {
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pdev = to_pci_dev(tsi148_bridge->parent);
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synchronize_irq(pdev->irq);
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}
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} else {
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tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
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tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
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iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
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tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
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tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
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iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
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}
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}
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/*
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* Generate a VME bus interrupt at the requested level & vector. Wait for
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* interrupt to be acked.
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*/
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static int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level,
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int statid)
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{
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u32 tmp;
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struct tsi148_driver *bridge;
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bridge = tsi148_bridge->driver_priv;
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mutex_lock(&bridge->vme_int);
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/* Read VICR register */
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tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
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/* Set Status/ID */
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tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
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(statid & TSI148_LCSR_VICR_STID_M);
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iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
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/* Assert VMEbus IRQ */
|
|
tmp = tmp | TSI148_LCSR_VICR_IRQL[level];
|
|
iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
|
|
|
|
/* XXX Consider implementing a timeout? */
|
|
wait_event_interruptible(bridge->iack_queue,
|
|
tsi148_iack_received(bridge));
|
|
|
|
mutex_unlock(&bridge->vme_int);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Find the first error in this address range
|
|
*/
|
|
static struct vme_bus_error *tsi148_find_error(struct vme_bridge *tsi148_bridge,
|
|
u32 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(struct vme_bridge *tsi148_bridge,
|
|
u32 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.
|
|
*/
|
|
static 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, u32 aspace, u32 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;
|
|
struct vme_bridge *tsi148_bridge;
|
|
struct tsi148_driver *bridge;
|
|
|
|
tsi148_bridge = image->parent;
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
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;
|
|
default:
|
|
dev_err(tsi148_bridge->parent, "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)) {
|
|
dev_err(tsi148_bridge->parent, "Invalid VME base alignment\n");
|
|
return -EINVAL;
|
|
}
|
|
if (vme_bound_low & (granularity - 1)) {
|
|
dev_err(tsi148_bridge->parent, "Invalid VME bound alignment\n");
|
|
return -EINVAL;
|
|
}
|
|
if (pci_offset_low & (granularity - 1)) {
|
|
dev_err(tsi148_bridge->parent, "Invalid PCI Offset "
|
|
"alignment\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Disable while we are mucking around */
|
|
temp_ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITAT);
|
|
temp_ctl &= ~TSI148_LCSR_ITAT_EN;
|
|
iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITAT);
|
|
|
|
/* Setup mapping */
|
|
iowrite32be(vme_base_high, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITSAU);
|
|
iowrite32be(vme_base_low, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITSAL);
|
|
iowrite32be(vme_bound_high, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITEAU);
|
|
iowrite32be(vme_bound_low, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITEAL);
|
|
iowrite32be(pci_offset_high, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITOFU);
|
|
iowrite32be(pci_offset_low, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITOFL);
|
|
|
|
/* 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, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITAT);
|
|
|
|
if (enabled)
|
|
temp_ctl |= TSI148_LCSR_ITAT_EN;
|
|
|
|
iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITAT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Get slave window configuration.
|
|
*/
|
|
static 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, u32 *aspace, u32 *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;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = image->parent->driver_priv;
|
|
|
|
i = image->number;
|
|
|
|
/* Read registers */
|
|
ctl = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITAT);
|
|
|
|
vme_base_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITSAU);
|
|
vme_base_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITSAL);
|
|
vme_bound_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITEAU);
|
|
vme_bound_low = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITEAL);
|
|
pci_offset_high = ioread32be(bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITOFU);
|
|
pci_offset_low = ioread32be(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;
|
|
struct vme_bridge *tsi148_bridge;
|
|
|
|
tsi148_bridge = image->parent;
|
|
|
|
pdev = to_pci_dev(tsi148_bridge->parent);
|
|
|
|
existing_size = (unsigned long long)(image->bus_resource.end -
|
|
image->bus_resource.start);
|
|
|
|
/* If the existing size is OK, return */
|
|
if ((size != 0) && (existing_size == (size - 1)))
|
|
return 0;
|
|
|
|
if (existing_size != 0) {
|
|
iounmap(image->kern_base);
|
|
image->kern_base = NULL;
|
|
kfree(image->bus_resource.name);
|
|
release_resource(&image->bus_resource);
|
|
memset(&image->bus_resource, 0, sizeof(struct resource));
|
|
}
|
|
|
|
/* Exit here if size is zero */
|
|
if (size == 0)
|
|
return 0;
|
|
|
|
if (image->bus_resource.name == NULL) {
|
|
image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
|
|
if (image->bus_resource.name == NULL) {
|
|
dev_err(tsi148_bridge->parent, "Unable to allocate "
|
|
"memory for resource name\n");
|
|
retval = -ENOMEM;
|
|
goto err_name;
|
|
}
|
|
}
|
|
|
|
sprintf((char *)image->bus_resource.name, "%s.%d", tsi148_bridge->name,
|
|
image->number);
|
|
|
|
image->bus_resource.start = 0;
|
|
image->bus_resource.end = (unsigned long)size;
|
|
image->bus_resource.flags = IORESOURCE_MEM;
|
|
|
|
retval = pci_bus_alloc_resource(pdev->bus,
|
|
&image->bus_resource, size, size, PCIBIOS_MIN_MEM,
|
|
0, NULL, NULL);
|
|
if (retval) {
|
|
dev_err(tsi148_bridge->parent, "Failed to allocate mem "
|
|
"resource for window %d size 0x%lx start 0x%lx\n",
|
|
image->number, (unsigned long)size,
|
|
(unsigned long)image->bus_resource.start);
|
|
goto err_resource;
|
|
}
|
|
|
|
image->kern_base = ioremap_nocache(
|
|
image->bus_resource.start, size);
|
|
if (image->kern_base == NULL) {
|
|
dev_err(tsi148_bridge->parent, "Failed to remap resource\n");
|
|
retval = -ENOMEM;
|
|
goto err_remap;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_remap:
|
|
release_resource(&image->bus_resource);
|
|
err_resource:
|
|
kfree(image->bus_resource.name);
|
|
memset(&image->bus_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->bus_resource);
|
|
kfree(image->bus_resource.name);
|
|
memset(&image->bus_resource, 0, sizeof(struct resource));
|
|
}
|
|
|
|
/*
|
|
* Set the attributes of an outbound window.
|
|
*/
|
|
static int tsi148_master_set(struct vme_master_resource *image, int enabled,
|
|
unsigned long long vme_base, unsigned long long size, u32 aspace,
|
|
u32 cycle, u32 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;
|
|
struct vme_bridge *tsi148_bridge;
|
|
struct tsi148_driver *bridge;
|
|
struct pci_bus_region region;
|
|
struct pci_dev *pdev;
|
|
|
|
tsi148_bridge = image->parent;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
pdev = to_pci_dev(tsi148_bridge->parent);
|
|
|
|
/* Verify input data */
|
|
if (vme_base & 0xFFFF) {
|
|
dev_err(tsi148_bridge->parent, "Invalid VME Window "
|
|
"alignment\n");
|
|
retval = -EINVAL;
|
|
goto err_window;
|
|
}
|
|
|
|
if ((size == 0) && (enabled != 0)) {
|
|
dev_err(tsi148_bridge->parent, "Size must be non-zero for "
|
|
"enabled windows\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 dependent stuff up the stack. If size
|
|
* is zero, any existing resource will be freed.
|
|
*/
|
|
retval = tsi148_alloc_resource(image, size);
|
|
if (retval) {
|
|
spin_unlock(&image->lock);
|
|
dev_err(tsi148_bridge->parent, "Unable to allocate memory for "
|
|
"resource\n");
|
|
goto err_res;
|
|
}
|
|
|
|
if (size == 0) {
|
|
pci_base = 0;
|
|
pci_bound = 0;
|
|
vme_offset = 0;
|
|
} else {
|
|
pcibios_resource_to_bus(pdev->bus, ®ion,
|
|
&image->bus_resource);
|
|
pci_base = region.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);
|
|
dev_err(tsi148_bridge->parent, "Invalid PCI base alignment\n");
|
|
retval = -EINVAL;
|
|
goto err_gran;
|
|
}
|
|
if (pci_bound_low & 0xFFFF) {
|
|
spin_unlock(&image->lock);
|
|
dev_err(tsi148_bridge->parent, "Invalid PCI bound alignment\n");
|
|
retval = -EINVAL;
|
|
goto err_gran;
|
|
}
|
|
if (vme_offset_low & 0xFFFF) {
|
|
spin_unlock(&image->lock);
|
|
dev_err(tsi148_bridge->parent, "Invalid VME Offset "
|
|
"alignment\n");
|
|
retval = -EINVAL;
|
|
goto err_gran;
|
|
}
|
|
|
|
i = image->number;
|
|
|
|
/* Disable while we are mucking around */
|
|
temp_ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTAT);
|
|
temp_ctl &= ~TSI148_LCSR_OTAT_EN;
|
|
iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTAT);
|
|
|
|
/* 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) {
|
|
dev_warn(tsi148_bridge->parent, "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);
|
|
dev_err(tsi148_bridge->parent, "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);
|
|
dev_err(tsi148_bridge->parent, "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, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTSAU);
|
|
iowrite32be(pci_base_low, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTSAL);
|
|
iowrite32be(pci_bound_high, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTEAU);
|
|
iowrite32be(pci_bound_low, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTEAL);
|
|
iowrite32be(vme_offset_high, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTOFU);
|
|
iowrite32be(vme_offset_low, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTOFL);
|
|
|
|
/* Write ctl reg without enable */
|
|
iowrite32be(temp_ctl, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTAT);
|
|
|
|
if (enabled)
|
|
temp_ctl |= TSI148_LCSR_OTAT_EN;
|
|
|
|
iowrite32be(temp_ctl, 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.
|
|
*/
|
|
static int __tsi148_master_get(struct vme_master_resource *image, int *enabled,
|
|
unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
|
|
u32 *cycle, u32 *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;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = image->parent->driver_priv;
|
|
|
|
i = image->number;
|
|
|
|
ctl = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTAT);
|
|
|
|
pci_base_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTSAU);
|
|
pci_base_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTSAL);
|
|
pci_bound_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTEAU);
|
|
pci_bound_low = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTEAL);
|
|
vme_offset_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTOFU);
|
|
vme_offset_low = ioread32be(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;
|
|
}
|
|
|
|
|
|
static int tsi148_master_get(struct vme_master_resource *image, int *enabled,
|
|
unsigned long long *vme_base, unsigned long long *size, u32 *aspace,
|
|
u32 *cycle, u32 *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;
|
|
}
|
|
|
|
static 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;
|
|
u32 aspace, cycle, dwidth;
|
|
struct vme_bus_error *vme_err = NULL;
|
|
struct vme_bridge *tsi148_bridge;
|
|
void __iomem *addr = image->kern_base + offset;
|
|
unsigned int done = 0;
|
|
unsigned int count32;
|
|
|
|
tsi148_bridge = image->parent;
|
|
|
|
spin_lock(&image->lock);
|
|
|
|
/* The following code handles VME address alignment. We cannot use
|
|
* memcpy_xxx here because it may cut data transfers in to 8-bit
|
|
* cycles when D16 or D32 cycles are required on the VME bus.
|
|
* On the other hand, the bridge itself assures that the maximum data
|
|
* cycle configured for the transfer is used and splits it
|
|
* automatically for non-aligned addresses, so we don't want the
|
|
* overhead of needlessly forcing small transfers for the entire cycle.
|
|
*/
|
|
if ((uintptr_t)addr & 0x1) {
|
|
*(u8 *)buf = ioread8(addr);
|
|
done += 1;
|
|
if (done == count)
|
|
goto out;
|
|
}
|
|
if ((uintptr_t)(addr + done) & 0x2) {
|
|
if ((count - done) < 2) {
|
|
*(u8 *)(buf + done) = ioread8(addr + done);
|
|
done += 1;
|
|
goto out;
|
|
} else {
|
|
*(u16 *)(buf + done) = ioread16(addr + done);
|
|
done += 2;
|
|
}
|
|
}
|
|
|
|
count32 = (count - done) & ~0x3;
|
|
while (done < count32) {
|
|
*(u32 *)(buf + done) = ioread32(addr + done);
|
|
done += 4;
|
|
}
|
|
|
|
if ((count - done) & 0x2) {
|
|
*(u16 *)(buf + done) = ioread16(addr + done);
|
|
done += 2;
|
|
}
|
|
if ((count - done) & 0x1) {
|
|
*(u8 *)(buf + done) = ioread8(addr + done);
|
|
done += 1;
|
|
}
|
|
|
|
out:
|
|
retval = count;
|
|
|
|
if (!err_chk)
|
|
goto skip_chk;
|
|
|
|
__tsi148_master_get(image, &enabled, &vme_base, &size, &aspace, &cycle,
|
|
&dwidth);
|
|
|
|
vme_err = tsi148_find_error(tsi148_bridge, 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(tsi148_bridge, aspace, vme_base + offset,
|
|
count);
|
|
}
|
|
|
|
skip_chk:
|
|
spin_unlock(&image->lock);
|
|
|
|
return retval;
|
|
}
|
|
|
|
|
|
static 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;
|
|
u32 aspace, cycle, dwidth;
|
|
void __iomem *addr = image->kern_base + offset;
|
|
unsigned int done = 0;
|
|
unsigned int count32;
|
|
|
|
struct vme_bus_error *vme_err = NULL;
|
|
struct vme_bridge *tsi148_bridge;
|
|
struct tsi148_driver *bridge;
|
|
|
|
tsi148_bridge = image->parent;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
spin_lock(&image->lock);
|
|
|
|
/* Here we apply for the same strategy we do in master_read
|
|
* function in order to assure the correct cycles.
|
|
*/
|
|
if ((uintptr_t)addr & 0x1) {
|
|
iowrite8(*(u8 *)buf, addr);
|
|
done += 1;
|
|
if (done == count)
|
|
goto out;
|
|
}
|
|
if ((uintptr_t)(addr + done) & 0x2) {
|
|
if ((count - done) < 2) {
|
|
iowrite8(*(u8 *)(buf + done), addr + done);
|
|
done += 1;
|
|
goto out;
|
|
} else {
|
|
iowrite16(*(u16 *)(buf + done), addr + done);
|
|
done += 2;
|
|
}
|
|
}
|
|
|
|
count32 = (count - done) & ~0x3;
|
|
while (done < count32) {
|
|
iowrite32(*(u32 *)(buf + done), addr + done);
|
|
done += 4;
|
|
}
|
|
|
|
if ((count - done) & 0x2) {
|
|
iowrite16(*(u16 *)(buf + done), addr + done);
|
|
done += 2;
|
|
}
|
|
if ((count - done) & 0x1) {
|
|
iowrite8(*(u8 *)(buf + done), addr + done);
|
|
done += 1;
|
|
}
|
|
|
|
out:
|
|
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 guarantee
|
|
* 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(bridge->flush_image->kern_base + 0x7F000);
|
|
|
|
vme_err = tsi148_find_error(tsi148_bridge, aspace, vme_base + offset,
|
|
count);
|
|
if (vme_err != NULL) {
|
|
dev_warn(tsi148_bridge->parent, "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(tsi148_bridge, 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.
|
|
*/
|
|
static 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;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = image->parent->driver_priv;
|
|
|
|
/* 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(&bridge->vme_rmw);
|
|
|
|
/* Lock image */
|
|
spin_lock(&image->lock);
|
|
|
|
pci_addr_high = ioread32be(bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTSAU);
|
|
pci_addr_low = ioread32be(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, bridge->base + TSI148_LCSR_RMWEN);
|
|
iowrite32be(compare, bridge->base + TSI148_LCSR_RMWC);
|
|
iowrite32be(swap, bridge->base + TSI148_LCSR_RMWS);
|
|
iowrite32be(pci_addr_high, bridge->base + TSI148_LCSR_RMWAU);
|
|
iowrite32be(pci_addr_low, bridge->base + TSI148_LCSR_RMWAL);
|
|
|
|
/* Enable RMW */
|
|
tmp = ioread32be(bridge->base + TSI148_LCSR_VMCTRL);
|
|
tmp |= TSI148_LCSR_VMCTRL_RMWEN;
|
|
iowrite32be(tmp, 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(bridge->base + TSI148_LCSR_VMCTRL);
|
|
tmp &= ~TSI148_LCSR_VMCTRL_RMWEN;
|
|
iowrite32be(tmp, bridge->base + TSI148_LCSR_VMCTRL);
|
|
|
|
spin_unlock(&image->lock);
|
|
|
|
mutex_unlock(&bridge->vme_rmw);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int tsi148_dma_set_vme_src_attributes(struct device *dev, __be32 *attr,
|
|
u32 aspace, u32 cycle, u32 dwidth)
|
|
{
|
|
u32 val;
|
|
|
|
val = be32_to_cpu(*attr);
|
|
|
|
/* Setup 2eSST speeds */
|
|
switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
|
|
case VME_2eSST160:
|
|
val |= TSI148_LCSR_DSAT_2eSSTM_160;
|
|
break;
|
|
case VME_2eSST267:
|
|
val |= TSI148_LCSR_DSAT_2eSSTM_267;
|
|
break;
|
|
case VME_2eSST320:
|
|
val |= TSI148_LCSR_DSAT_2eSSTM_320;
|
|
break;
|
|
}
|
|
|
|
/* Setup cycle types */
|
|
if (cycle & VME_SCT)
|
|
val |= TSI148_LCSR_DSAT_TM_SCT;
|
|
|
|
if (cycle & VME_BLT)
|
|
val |= TSI148_LCSR_DSAT_TM_BLT;
|
|
|
|
if (cycle & VME_MBLT)
|
|
val |= TSI148_LCSR_DSAT_TM_MBLT;
|
|
|
|
if (cycle & VME_2eVME)
|
|
val |= TSI148_LCSR_DSAT_TM_2eVME;
|
|
|
|
if (cycle & VME_2eSST)
|
|
val |= TSI148_LCSR_DSAT_TM_2eSST;
|
|
|
|
if (cycle & VME_2eSSTB) {
|
|
dev_err(dev, "Currently not setting Broadcast Select "
|
|
"Registers\n");
|
|
val |= TSI148_LCSR_DSAT_TM_2eSSTB;
|
|
}
|
|
|
|
/* Setup data width */
|
|
switch (dwidth) {
|
|
case VME_D16:
|
|
val |= TSI148_LCSR_DSAT_DBW_16;
|
|
break;
|
|
case VME_D32:
|
|
val |= TSI148_LCSR_DSAT_DBW_32;
|
|
break;
|
|
default:
|
|
dev_err(dev, "Invalid data width\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Setup address space */
|
|
switch (aspace) {
|
|
case VME_A16:
|
|
val |= TSI148_LCSR_DSAT_AMODE_A16;
|
|
break;
|
|
case VME_A24:
|
|
val |= TSI148_LCSR_DSAT_AMODE_A24;
|
|
break;
|
|
case VME_A32:
|
|
val |= TSI148_LCSR_DSAT_AMODE_A32;
|
|
break;
|
|
case VME_A64:
|
|
val |= TSI148_LCSR_DSAT_AMODE_A64;
|
|
break;
|
|
case VME_CRCSR:
|
|
val |= TSI148_LCSR_DSAT_AMODE_CRCSR;
|
|
break;
|
|
case VME_USER1:
|
|
val |= TSI148_LCSR_DSAT_AMODE_USER1;
|
|
break;
|
|
case VME_USER2:
|
|
val |= TSI148_LCSR_DSAT_AMODE_USER2;
|
|
break;
|
|
case VME_USER3:
|
|
val |= TSI148_LCSR_DSAT_AMODE_USER3;
|
|
break;
|
|
case VME_USER4:
|
|
val |= TSI148_LCSR_DSAT_AMODE_USER4;
|
|
break;
|
|
default:
|
|
dev_err(dev, "Invalid address space\n");
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (cycle & VME_SUPER)
|
|
val |= TSI148_LCSR_DSAT_SUP;
|
|
if (cycle & VME_PROG)
|
|
val |= TSI148_LCSR_DSAT_PGM;
|
|
|
|
*attr = cpu_to_be32(val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tsi148_dma_set_vme_dest_attributes(struct device *dev, __be32 *attr,
|
|
u32 aspace, u32 cycle, u32 dwidth)
|
|
{
|
|
u32 val;
|
|
|
|
val = be32_to_cpu(*attr);
|
|
|
|
/* Setup 2eSST speeds */
|
|
switch (cycle & (VME_2eSST160 | VME_2eSST267 | VME_2eSST320)) {
|
|
case VME_2eSST160:
|
|
val |= TSI148_LCSR_DDAT_2eSSTM_160;
|
|
break;
|
|
case VME_2eSST267:
|
|
val |= TSI148_LCSR_DDAT_2eSSTM_267;
|
|
break;
|
|
case VME_2eSST320:
|
|
val |= TSI148_LCSR_DDAT_2eSSTM_320;
|
|
break;
|
|
}
|
|
|
|
/* Setup cycle types */
|
|
if (cycle & VME_SCT)
|
|
val |= TSI148_LCSR_DDAT_TM_SCT;
|
|
|
|
if (cycle & VME_BLT)
|
|
val |= TSI148_LCSR_DDAT_TM_BLT;
|
|
|
|
if (cycle & VME_MBLT)
|
|
val |= TSI148_LCSR_DDAT_TM_MBLT;
|
|
|
|
if (cycle & VME_2eVME)
|
|
val |= TSI148_LCSR_DDAT_TM_2eVME;
|
|
|
|
if (cycle & VME_2eSST)
|
|
val |= TSI148_LCSR_DDAT_TM_2eSST;
|
|
|
|
if (cycle & VME_2eSSTB) {
|
|
dev_err(dev, "Currently not setting Broadcast Select "
|
|
"Registers\n");
|
|
val |= TSI148_LCSR_DDAT_TM_2eSSTB;
|
|
}
|
|
|
|
/* Setup data width */
|
|
switch (dwidth) {
|
|
case VME_D16:
|
|
val |= TSI148_LCSR_DDAT_DBW_16;
|
|
break;
|
|
case VME_D32:
|
|
val |= TSI148_LCSR_DDAT_DBW_32;
|
|
break;
|
|
default:
|
|
dev_err(dev, "Invalid data width\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Setup address space */
|
|
switch (aspace) {
|
|
case VME_A16:
|
|
val |= TSI148_LCSR_DDAT_AMODE_A16;
|
|
break;
|
|
case VME_A24:
|
|
val |= TSI148_LCSR_DDAT_AMODE_A24;
|
|
break;
|
|
case VME_A32:
|
|
val |= TSI148_LCSR_DDAT_AMODE_A32;
|
|
break;
|
|
case VME_A64:
|
|
val |= TSI148_LCSR_DDAT_AMODE_A64;
|
|
break;
|
|
case VME_CRCSR:
|
|
val |= TSI148_LCSR_DDAT_AMODE_CRCSR;
|
|
break;
|
|
case VME_USER1:
|
|
val |= TSI148_LCSR_DDAT_AMODE_USER1;
|
|
break;
|
|
case VME_USER2:
|
|
val |= TSI148_LCSR_DDAT_AMODE_USER2;
|
|
break;
|
|
case VME_USER3:
|
|
val |= TSI148_LCSR_DDAT_AMODE_USER3;
|
|
break;
|
|
case VME_USER4:
|
|
val |= TSI148_LCSR_DDAT_AMODE_USER4;
|
|
break;
|
|
default:
|
|
dev_err(dev, "Invalid address space\n");
|
|
return -EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (cycle & VME_SUPER)
|
|
val |= TSI148_LCSR_DDAT_SUP;
|
|
if (cycle & VME_PROG)
|
|
val |= TSI148_LCSR_DDAT_PGM;
|
|
|
|
*attr = cpu_to_be32(val);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Add a link list descriptor to the list
|
|
*
|
|
* Note: DMA engine expects the DMA descriptor to be big endian.
|
|
*/
|
|
static 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, val;
|
|
struct vme_dma_pattern *pattern_attr;
|
|
struct vme_dma_pci *pci_attr;
|
|
struct vme_dma_vme *vme_attr;
|
|
int retval = 0;
|
|
struct vme_bridge *tsi148_bridge;
|
|
|
|
tsi148_bridge = list->parent->parent;
|
|
|
|
/* Descriptor must be aligned on 64-bit boundaries */
|
|
entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL);
|
|
if (entry == NULL) {
|
|
dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
|
|
"dma resource structure\n");
|
|
retval = -ENOMEM;
|
|
goto err_mem;
|
|
}
|
|
|
|
/* Test descriptor alignment */
|
|
if ((unsigned long)&entry->descriptor & 0x7) {
|
|
dev_err(tsi148_bridge->parent, "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 = src->private;
|
|
|
|
entry->descriptor.dsal = cpu_to_be32(pattern_attr->pattern);
|
|
|
|
val = TSI148_LCSR_DSAT_TYP_PAT;
|
|
|
|
/* Default behaviour is 32 bit pattern */
|
|
if (pattern_attr->type & VME_DMA_PATTERN_BYTE)
|
|
val |= TSI148_LCSR_DSAT_PSZ;
|
|
|
|
/* It seems that the default behaviour is to increment */
|
|
if ((pattern_attr->type & VME_DMA_PATTERN_INCREMENT) == 0)
|
|
val |= TSI148_LCSR_DSAT_NIN;
|
|
entry->descriptor.dsat = cpu_to_be32(val);
|
|
break;
|
|
case VME_DMA_PCI:
|
|
pci_attr = src->private;
|
|
|
|
reg_split((unsigned long long)pci_attr->address, &address_high,
|
|
&address_low);
|
|
entry->descriptor.dsau = cpu_to_be32(address_high);
|
|
entry->descriptor.dsal = cpu_to_be32(address_low);
|
|
entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_PCI);
|
|
break;
|
|
case VME_DMA_VME:
|
|
vme_attr = src->private;
|
|
|
|
reg_split((unsigned long long)vme_attr->address, &address_high,
|
|
&address_low);
|
|
entry->descriptor.dsau = cpu_to_be32(address_high);
|
|
entry->descriptor.dsal = cpu_to_be32(address_low);
|
|
entry->descriptor.dsat = cpu_to_be32(TSI148_LCSR_DSAT_TYP_VME);
|
|
|
|
retval = tsi148_dma_set_vme_src_attributes(
|
|
tsi148_bridge->parent, &entry->descriptor.dsat,
|
|
vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
|
|
if (retval < 0)
|
|
goto err_source;
|
|
break;
|
|
default:
|
|
dev_err(tsi148_bridge->parent, "Invalid source type\n");
|
|
retval = -EINVAL;
|
|
goto err_source;
|
|
break;
|
|
}
|
|
|
|
/* Assume last link - this will be over-written by adding another */
|
|
entry->descriptor.dnlau = cpu_to_be32(0);
|
|
entry->descriptor.dnlal = cpu_to_be32(TSI148_LCSR_DNLAL_LLA);
|
|
|
|
/* Fill out destination part */
|
|
switch (dest->type) {
|
|
case VME_DMA_PCI:
|
|
pci_attr = dest->private;
|
|
|
|
reg_split((unsigned long long)pci_attr->address, &address_high,
|
|
&address_low);
|
|
entry->descriptor.ddau = cpu_to_be32(address_high);
|
|
entry->descriptor.ddal = cpu_to_be32(address_low);
|
|
entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_PCI);
|
|
break;
|
|
case VME_DMA_VME:
|
|
vme_attr = dest->private;
|
|
|
|
reg_split((unsigned long long)vme_attr->address, &address_high,
|
|
&address_low);
|
|
entry->descriptor.ddau = cpu_to_be32(address_high);
|
|
entry->descriptor.ddal = cpu_to_be32(address_low);
|
|
entry->descriptor.ddat = cpu_to_be32(TSI148_LCSR_DDAT_TYP_VME);
|
|
|
|
retval = tsi148_dma_set_vme_dest_attributes(
|
|
tsi148_bridge->parent, &entry->descriptor.ddat,
|
|
vme_attr->aspace, vme_attr->cycle, vme_attr->dwidth);
|
|
if (retval < 0)
|
|
goto err_dest;
|
|
break;
|
|
default:
|
|
dev_err(tsi148_bridge->parent, "Invalid destination type\n");
|
|
retval = -EINVAL;
|
|
goto err_dest;
|
|
break;
|
|
}
|
|
|
|
/* Fill out count */
|
|
entry->descriptor.dcnt = cpu_to_be32((u32)count);
|
|
|
|
/* Add to list */
|
|
list_add_tail(&entry->list, &list->entries);
|
|
|
|
entry->dma_handle = dma_map_single(tsi148_bridge->parent,
|
|
&entry->descriptor,
|
|
sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
|
|
if (dma_mapping_error(tsi148_bridge->parent, entry->dma_handle)) {
|
|
dev_err(tsi148_bridge->parent, "DMA mapping error\n");
|
|
retval = -EINVAL;
|
|
goto err_dma;
|
|
}
|
|
|
|
/* Fill out previous descriptors "Next Address" */
|
|
if (entry->list.prev != &list->entries) {
|
|
reg_split((unsigned long long)entry->dma_handle, &address_high,
|
|
&address_low);
|
|
prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
|
|
list);
|
|
prev->descriptor.dnlau = cpu_to_be32(address_high);
|
|
prev->descriptor.dnlal = cpu_to_be32(address_low);
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_dma:
|
|
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(struct vme_bridge *tsi148_bridge, int channel)
|
|
{
|
|
u32 tmp;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
tmp = ioread32be(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.
|
|
*/
|
|
static int tsi148_dma_list_exec(struct vme_dma_list *list)
|
|
{
|
|
struct vme_dma_resource *ctrlr;
|
|
int channel, retval;
|
|
struct tsi148_dma_entry *entry;
|
|
u32 bus_addr_high, bus_addr_low;
|
|
u32 val, dctlreg = 0;
|
|
struct vme_bridge *tsi148_bridge;
|
|
struct tsi148_driver *bridge;
|
|
|
|
ctrlr = list->parent;
|
|
|
|
tsi148_bridge = ctrlr->parent;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
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);
|
|
}
|
|
|
|
/* Get first bus address and write into registers */
|
|
entry = list_first_entry(&list->entries, struct tsi148_dma_entry,
|
|
list);
|
|
|
|
mutex_unlock(&ctrlr->mtx);
|
|
|
|
reg_split(entry->dma_handle, &bus_addr_high, &bus_addr_low);
|
|
|
|
iowrite32be(bus_addr_high, bridge->base +
|
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAU);
|
|
iowrite32be(bus_addr_low, bridge->base +
|
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DNLAL);
|
|
|
|
dctlreg = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
|
|
TSI148_LCSR_OFFSET_DCTL);
|
|
|
|
/* Start the operation */
|
|
iowrite32be(dctlreg | TSI148_LCSR_DCTL_DGO, bridge->base +
|
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
|
|
|
|
retval = wait_event_interruptible(bridge->dma_queue[channel],
|
|
tsi148_dma_busy(ctrlr->parent, channel));
|
|
|
|
if (retval) {
|
|
iowrite32be(dctlreg | TSI148_LCSR_DCTL_ABT, bridge->base +
|
|
TSI148_LCSR_DMA[channel] + TSI148_LCSR_OFFSET_DCTL);
|
|
/* Wait for the operation to abort */
|
|
wait_event(bridge->dma_queue[channel],
|
|
tsi148_dma_busy(ctrlr->parent, channel));
|
|
retval = -EINTR;
|
|
goto exit;
|
|
}
|
|
|
|
/*
|
|
* Read status register, this register is valid until we kick off a
|
|
* new transfer.
|
|
*/
|
|
val = ioread32be(bridge->base + TSI148_LCSR_DMA[channel] +
|
|
TSI148_LCSR_OFFSET_DSTA);
|
|
|
|
if (val & TSI148_LCSR_DSTA_VBE) {
|
|
dev_err(tsi148_bridge->parent, "DMA Error. DSTA=%08X\n", val);
|
|
retval = -EIO;
|
|
}
|
|
|
|
exit:
|
|
/* 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.
|
|
*/
|
|
static int tsi148_dma_list_empty(struct vme_dma_list *list)
|
|
{
|
|
struct list_head *pos, *temp;
|
|
struct tsi148_dma_entry *entry;
|
|
|
|
struct vme_bridge *tsi148_bridge = list->parent->parent;
|
|
|
|
/* 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);
|
|
|
|
dma_unmap_single(tsi148_bridge->parent, entry->dma_handle,
|
|
sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
|
|
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.
|
|
*/
|
|
static int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base,
|
|
u32 aspace, u32 cycle)
|
|
{
|
|
u32 lm_base_high, lm_base_low, lm_ctl = 0;
|
|
int i;
|
|
struct vme_bridge *tsi148_bridge;
|
|
struct tsi148_driver *bridge;
|
|
|
|
tsi148_bridge = lm->parent;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
mutex_lock(&lm->mtx);
|
|
|
|
/* If we already have a callback attached, we can't move it! */
|
|
for (i = 0; i < lm->monitors; i++) {
|
|
if (bridge->lm_callback[i] != NULL) {
|
|
mutex_unlock(&lm->mtx);
|
|
dev_err(tsi148_bridge->parent, "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);
|
|
dev_err(tsi148_bridge->parent, "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, bridge->base + TSI148_LCSR_LMBAU);
|
|
iowrite32be(lm_base_low, bridge->base + TSI148_LCSR_LMBAL);
|
|
iowrite32be(lm_ctl, 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.
|
|
*/
|
|
static int tsi148_lm_get(struct vme_lm_resource *lm,
|
|
unsigned long long *lm_base, u32 *aspace, u32 *cycle)
|
|
{
|
|
u32 lm_base_high, lm_base_low, lm_ctl, enabled = 0;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = lm->parent->driver_priv;
|
|
|
|
mutex_lock(&lm->mtx);
|
|
|
|
lm_base_high = ioread32be(bridge->base + TSI148_LCSR_LMBAU);
|
|
lm_base_low = ioread32be(bridge->base + TSI148_LCSR_LMBAL);
|
|
lm_ctl = ioread32be(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.
|
|
*/
|
|
static int tsi148_lm_attach(struct vme_lm_resource *lm, int monitor,
|
|
void (*callback)(int))
|
|
{
|
|
u32 lm_ctl, tmp;
|
|
struct vme_bridge *tsi148_bridge;
|
|
struct tsi148_driver *bridge;
|
|
|
|
tsi148_bridge = lm->parent;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
mutex_lock(&lm->mtx);
|
|
|
|
/* Ensure that the location monitor is configured - need PGM or DATA */
|
|
lm_ctl = ioread32be(bridge->base + TSI148_LCSR_LMAT);
|
|
if ((lm_ctl & (TSI148_LCSR_LMAT_PGM | TSI148_LCSR_LMAT_DATA)) == 0) {
|
|
mutex_unlock(&lm->mtx);
|
|
dev_err(tsi148_bridge->parent, "Location monitor not properly "
|
|
"configured\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Check that a callback isn't already attached */
|
|
if (bridge->lm_callback[monitor] != NULL) {
|
|
mutex_unlock(&lm->mtx);
|
|
dev_err(tsi148_bridge->parent, "Existing callback attached\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
/* Attach callback */
|
|
bridge->lm_callback[monitor] = callback;
|
|
|
|
/* Enable Location Monitor interrupt */
|
|
tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
|
|
tmp |= TSI148_LCSR_INTEN_LMEN[monitor];
|
|
iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
|
|
|
|
tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
|
|
tmp |= TSI148_LCSR_INTEO_LMEO[monitor];
|
|
iowrite32be(tmp, 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, bridge->base + TSI148_LCSR_LMAT);
|
|
}
|
|
|
|
mutex_unlock(&lm->mtx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Detach a callback function forn a specific location monitor.
|
|
*/
|
|
static int tsi148_lm_detach(struct vme_lm_resource *lm, int monitor)
|
|
{
|
|
u32 lm_en, tmp;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = lm->parent->driver_priv;
|
|
|
|
mutex_lock(&lm->mtx);
|
|
|
|
/* Disable Location Monitor and ensure previous interrupts are clear */
|
|
lm_en = ioread32be(bridge->base + TSI148_LCSR_INTEN);
|
|
lm_en &= ~TSI148_LCSR_INTEN_LMEN[monitor];
|
|
iowrite32be(lm_en, bridge->base + TSI148_LCSR_INTEN);
|
|
|
|
tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
|
|
tmp &= ~TSI148_LCSR_INTEO_LMEO[monitor];
|
|
iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
|
|
|
|
iowrite32be(TSI148_LCSR_INTC_LMC[monitor],
|
|
bridge->base + TSI148_LCSR_INTC);
|
|
|
|
/* Detach callback */
|
|
bridge->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(bridge->base + TSI148_LCSR_LMAT);
|
|
tmp &= ~TSI148_LCSR_LMAT_EN;
|
|
iowrite32be(tmp, bridge->base + TSI148_LCSR_LMAT);
|
|
}
|
|
|
|
mutex_unlock(&lm->mtx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Determine Geographical Addressing
|
|
*/
|
|
static int tsi148_slot_get(struct vme_bridge *tsi148_bridge)
|
|
{
|
|
u32 slot = 0;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
if (!geoid) {
|
|
slot = ioread32be(bridge->base + TSI148_LCSR_VSTAT);
|
|
slot = slot & TSI148_LCSR_VSTAT_GA_M;
|
|
} else
|
|
slot = geoid;
|
|
|
|
return (int)slot;
|
|
}
|
|
|
|
static void *tsi148_alloc_consistent(struct device *parent, size_t size,
|
|
dma_addr_t *dma)
|
|
{
|
|
struct pci_dev *pdev;
|
|
|
|
/* Find pci_dev container of dev */
|
|
pdev = to_pci_dev(parent);
|
|
|
|
return pci_alloc_consistent(pdev, size, dma);
|
|
}
|
|
|
|
static void tsi148_free_consistent(struct device *parent, size_t size,
|
|
void *vaddr, dma_addr_t dma)
|
|
{
|
|
struct pci_dev *pdev;
|
|
|
|
/* Find pci_dev container of dev */
|
|
pdev = to_pci_dev(parent);
|
|
|
|
pci_free_consistent(pdev, size, vaddr, dma);
|
|
}
|
|
|
|
/*
|
|
* 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 vme_bridge *tsi148_bridge,
|
|
struct pci_dev *pdev)
|
|
{
|
|
u32 cbar, crat, vstat;
|
|
u32 crcsr_bus_high, crcsr_bus_low;
|
|
int retval;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
/* Allocate mem for CR/CSR image */
|
|
bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
|
|
&bridge->crcsr_bus);
|
|
if (bridge->crcsr_kernel == NULL) {
|
|
dev_err(tsi148_bridge->parent, "Failed to allocate memory for "
|
|
"CR/CSR image\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
reg_split(bridge->crcsr_bus, &crcsr_bus_high, &crcsr_bus_low);
|
|
|
|
iowrite32be(crcsr_bus_high, bridge->base + TSI148_LCSR_CROU);
|
|
iowrite32be(crcsr_bus_low, bridge->base + TSI148_LCSR_CROL);
|
|
|
|
/* Ensure that the CR/CSR is configured at the correct offset */
|
|
cbar = ioread32be(bridge->base + TSI148_CBAR);
|
|
cbar = (cbar & TSI148_CRCSR_CBAR_M)>>3;
|
|
|
|
vstat = tsi148_slot_get(tsi148_bridge);
|
|
|
|
if (cbar != vstat) {
|
|
cbar = vstat;
|
|
dev_info(tsi148_bridge->parent, "Setting CR/CSR offset\n");
|
|
iowrite32be(cbar<<3, bridge->base + TSI148_CBAR);
|
|
}
|
|
dev_info(tsi148_bridge->parent, "CR/CSR Offset: %d\n", cbar);
|
|
|
|
crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
|
|
if (crat & TSI148_LCSR_CRAT_EN)
|
|
dev_info(tsi148_bridge->parent, "CR/CSR already enabled\n");
|
|
else {
|
|
dev_info(tsi148_bridge->parent, "Enabling CR/CSR space\n");
|
|
iowrite32be(crat | TSI148_LCSR_CRAT_EN,
|
|
bridge->base + TSI148_LCSR_CRAT);
|
|
}
|
|
|
|
/* 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(bridge->flush_image, 1,
|
|
(vstat * 0x80000), 0x80000, VME_CRCSR, VME_SCT,
|
|
VME_D16);
|
|
if (retval)
|
|
dev_err(tsi148_bridge->parent, "Configuring flush image"
|
|
" failed\n");
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
static void tsi148_crcsr_exit(struct vme_bridge *tsi148_bridge,
|
|
struct pci_dev *pdev)
|
|
{
|
|
u32 crat;
|
|
struct tsi148_driver *bridge;
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
/* Turn off CR/CSR space */
|
|
crat = ioread32be(bridge->base + TSI148_LCSR_CRAT);
|
|
iowrite32be(crat & ~TSI148_LCSR_CRAT_EN,
|
|
bridge->base + TSI148_LCSR_CRAT);
|
|
|
|
/* Free image */
|
|
iowrite32be(0, bridge->base + TSI148_LCSR_CROU);
|
|
iowrite32be(0, bridge->base + TSI148_LCSR_CROL);
|
|
|
|
pci_free_consistent(pdev, VME_CRCSR_BUF_SIZE, bridge->crcsr_kernel,
|
|
bridge->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, *n;
|
|
struct vme_bridge *tsi148_bridge;
|
|
struct tsi148_driver *tsi148_device;
|
|
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 = kzalloc(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;
|
|
}
|
|
|
|
tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL);
|
|
if (tsi148_device == NULL) {
|
|
dev_err(&pdev->dev, "Failed to allocate memory for device "
|
|
"structure\n");
|
|
retval = -ENOMEM;
|
|
goto err_driver;
|
|
}
|
|
|
|
tsi148_bridge->driver_priv = tsi148_device;
|
|
|
|
/* 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_device->base = ioremap_nocache(pci_resource_start(pdev, 0),
|
|
4096);
|
|
if (!tsi148_device->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_device->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 */
|
|
init_waitqueue_head(&tsi148_device->dma_queue[0]);
|
|
init_waitqueue_head(&tsi148_device->dma_queue[1]);
|
|
init_waitqueue_head(&tsi148_device->iack_queue);
|
|
mutex_init(&tsi148_device->vme_int);
|
|
mutex_init(&tsi148_device->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--;
|
|
|
|
tsi148_device->flush_image =
|
|
kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL);
|
|
if (tsi148_device->flush_image == NULL) {
|
|
dev_err(&pdev->dev, "Failed to allocate memory for "
|
|
"flush resource structure\n");
|
|
retval = -ENOMEM;
|
|
goto err_master;
|
|
}
|
|
tsi148_device->flush_image->parent = tsi148_bridge;
|
|
spin_lock_init(&tsi148_device->flush_image->lock);
|
|
tsi148_device->flush_image->locked = 1;
|
|
tsi148_device->flush_image->number = master_num;
|
|
memset(&tsi148_device->flush_image->bus_resource, 0,
|
|
sizeof(struct resource));
|
|
tsi148_device->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 = 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 | VME_CRCSR | VME_USER1 | VME_USER2 |
|
|
VME_USER3 | VME_USER4;
|
|
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->bus_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 = 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;
|
|
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 = 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;
|
|
dma_ctrlr->route_attr = VME_DMA_VME_TO_MEM |
|
|
VME_DMA_MEM_TO_VME | VME_DMA_VME_TO_VME |
|
|
VME_DMA_MEM_TO_MEM | VME_DMA_PATTERN_TO_VME |
|
|
VME_DMA_PATTERN_TO_MEM;
|
|
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->irq_set = tsi148_irq_set;
|
|
tsi148_bridge->irq_generate = tsi148_irq_generate;
|
|
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;
|
|
tsi148_bridge->alloc_consistent = tsi148_alloc_consistent;
|
|
tsi148_bridge->free_consistent = tsi148_free_consistent;
|
|
|
|
data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
|
|
dev_info(&pdev->dev, "Board is%s the VME system controller\n",
|
|
(data & TSI148_LCSR_VSTAT_SCONS) ? "" : " not");
|
|
if (!geoid)
|
|
dev_info(&pdev->dev, "VME geographical address is %d\n",
|
|
data & TSI148_LCSR_VSTAT_GA_M);
|
|
else
|
|
dev_info(&pdev->dev, "VME geographical address is set to %d\n",
|
|
geoid);
|
|
|
|
dev_info(&pdev->dev, "VME Write and flush and error check is %s\n",
|
|
err_chk ? "enabled" : "disabled");
|
|
|
|
retval = tsi148_crcsr_init(tsi148_bridge, pdev);
|
|
if (retval) {
|
|
dev_err(&pdev->dev, "CR/CSR configuration failed.\n");
|
|
goto err_crcsr;
|
|
}
|
|
|
|
retval = vme_register_bridge(tsi148_bridge);
|
|
if (retval != 0) {
|
|
dev_err(&pdev->dev, "Chip Registration failed.\n");
|
|
goto err_reg;
|
|
}
|
|
|
|
pci_set_drvdata(pdev, tsi148_bridge);
|
|
|
|
/* Clear VME bus "board fail", and "power-up reset" lines */
|
|
data = ioread32be(tsi148_device->base + TSI148_LCSR_VSTAT);
|
|
data &= ~TSI148_LCSR_VSTAT_BRDFL;
|
|
data |= TSI148_LCSR_VSTAT_CPURST;
|
|
iowrite32be(data, tsi148_device->base + TSI148_LCSR_VSTAT);
|
|
|
|
return 0;
|
|
|
|
err_reg:
|
|
tsi148_crcsr_exit(tsi148_bridge, pdev);
|
|
err_crcsr:
|
|
err_lm:
|
|
/* resources are stored in link list */
|
|
list_for_each_safe(pos, n, &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_safe(pos, n, &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_safe(pos, n, &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_safe(pos, n, &tsi148_bridge->master_resources) {
|
|
master_image = list_entry(pos, struct vme_master_resource,
|
|
list);
|
|
list_del(pos);
|
|
kfree(master_image);
|
|
}
|
|
|
|
tsi148_irq_exit(tsi148_bridge, pdev);
|
|
err_irq:
|
|
err_test:
|
|
iounmap(tsi148_device->base);
|
|
err_remap:
|
|
pci_release_regions(pdev);
|
|
err_resource:
|
|
pci_disable_device(pdev);
|
|
err_enable:
|
|
kfree(tsi148_device);
|
|
err_driver:
|
|
kfree(tsi148_bridge);
|
|
err_struct:
|
|
return retval;
|
|
|
|
}
|
|
|
|
static void tsi148_remove(struct pci_dev *pdev)
|
|
{
|
|
struct list_head *pos = NULL;
|
|
struct list_head *tmplist;
|
|
struct vme_master_resource *master_image;
|
|
struct vme_slave_resource *slave_image;
|
|
struct vme_dma_resource *dma_ctrlr;
|
|
int i;
|
|
struct tsi148_driver *bridge;
|
|
struct vme_bridge *tsi148_bridge = pci_get_drvdata(pdev);
|
|
|
|
bridge = tsi148_bridge->driver_priv;
|
|
|
|
|
|
dev_dbg(&pdev->dev, "Driver is being unloaded.\n");
|
|
|
|
/*
|
|
* Shutdown all inbound and outbound windows.
|
|
*/
|
|
for (i = 0; i < 8; i++) {
|
|
iowrite32be(0, bridge->base + TSI148_LCSR_IT[i] +
|
|
TSI148_LCSR_OFFSET_ITAT);
|
|
iowrite32be(0, bridge->base + TSI148_LCSR_OT[i] +
|
|
TSI148_LCSR_OFFSET_OTAT);
|
|
}
|
|
|
|
/*
|
|
* Shutdown Location monitor.
|
|
*/
|
|
iowrite32be(0, bridge->base + TSI148_LCSR_LMAT);
|
|
|
|
/*
|
|
* Shutdown CRG map.
|
|
*/
|
|
iowrite32be(0, bridge->base + TSI148_LCSR_CSRAT);
|
|
|
|
/*
|
|
* Clear error status.
|
|
*/
|
|
iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_EDPAT);
|
|
iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_VEAT);
|
|
iowrite32be(0x07000700, bridge->base + TSI148_LCSR_PSTAT);
|
|
|
|
/*
|
|
* Remove VIRQ interrupt (if any)
|
|
*/
|
|
if (ioread32be(bridge->base + TSI148_LCSR_VICR) & 0x800)
|
|
iowrite32be(0x8000, bridge->base + TSI148_LCSR_VICR);
|
|
|
|
/*
|
|
* Map all Interrupts to PCI INTA
|
|
*/
|
|
iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM1);
|
|
iowrite32be(0x0, bridge->base + TSI148_LCSR_INTM2);
|
|
|
|
tsi148_irq_exit(tsi148_bridge, pdev);
|
|
|
|
vme_unregister_bridge(tsi148_bridge);
|
|
|
|
tsi148_crcsr_exit(tsi148_bridge, pdev);
|
|
|
|
/* resources are stored in link list */
|
|
list_for_each_safe(pos, tmplist, &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_safe(pos, tmplist, &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_safe(pos, tmplist, &tsi148_bridge->master_resources) {
|
|
master_image = list_entry(pos, struct vme_master_resource,
|
|
list);
|
|
list_del(pos);
|
|
kfree(master_image);
|
|
}
|
|
|
|
iounmap(bridge->base);
|
|
|
|
pci_release_regions(pdev);
|
|
|
|
pci_disable_device(pdev);
|
|
|
|
kfree(tsi148_bridge->driver_priv);
|
|
|
|
kfree(tsi148_bridge);
|
|
}
|
|
|
|
module_pci_driver(tsi148_driver);
|
|
|
|
MODULE_PARM_DESC(err_chk, "Check for VME errors on reads and writes");
|
|
module_param(err_chk, bool, 0);
|
|
|
|
MODULE_PARM_DESC(geoid, "Override geographical addressing");
|
|
module_param(geoid, int, 0);
|
|
|
|
MODULE_DESCRIPTION("VME driver for the Tundra Tempe VME bridge");
|
|
MODULE_LICENSE("GPL");
|