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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-08-05 17:04:01 -0300
commit57f0f512b273f60d52568b8c6b77e17f5636edc0 (patch)
tree5e910f0e82173f4ef4f51111366a3f1299037a7b /drivers/vme/bridges/vme_tsi148.c
Initial import
Diffstat (limited to 'drivers/vme/bridges/vme_tsi148.c')
-rw-r--r--drivers/vme/bridges/vme_tsi148.c2757
1 files changed, 2757 insertions, 0 deletions
diff --git a/drivers/vme/bridges/vme_tsi148.c b/drivers/vme/bridges/vme_tsi148.c
new file mode 100644
index 000000000..895c2a319
--- /dev/null
+++ b/drivers/vme/bridges/vme_tsi148.c
@@ -0,0 +1,2757 @@
+/*
+ * Support for the Tundra TSI148 VME-PCI Bridge Chip
+ *
+ * Author: Martyn Welch <martyn.welch@ge.com>
+ * Copyright 2008 GE Intelligent Platforms Embedded Systems, Inc.
+ *
+ * Based on work by Tom Armistead and Ajit Prem
+ * Copyright 2004 Motorola Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/mm.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/proc_fs.h>
+#include <linux/pci.h>
+#include <linux/poll.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/time.h>
+#include <linux/io.h>
+#include <linux/uaccess.h>
+#include <linux/byteorder/generic.h>
+#include <linux/vme.h>
+
+#include "../vme_bridge.h"
+#include "vme_tsi148.h"
+
+static int tsi148_probe(struct pci_dev *, const struct pci_device_id *);
+static void tsi148_remove(struct pci_dev *);
+
+
+/* Module parameter */
+static bool err_chk;
+static int geoid;
+
+static const char driver_name[] = "vme_tsi148";
+
+static const struct pci_device_id tsi148_ids[] = {
+ { PCI_DEVICE(PCI_VENDOR_ID_TUNDRA, PCI_DEVICE_ID_TUNDRA_TSI148) },
+ { },
+};
+
+static struct pci_driver tsi148_driver = {
+ .name = driver_name,
+ .id_table = tsi148_ids,
+ .probe = tsi148_probe,
+ .remove = tsi148_remove,
+};
+
+static void reg_join(unsigned int high, unsigned int low,
+ unsigned long long *variable)
+{
+ *variable = (unsigned long long)high << 32;
+ *variable |= (unsigned long long)low;
+}
+
+static void reg_split(unsigned long long variable, unsigned int *high,
+ unsigned int *low)
+{
+ *low = (unsigned int)variable & 0xFFFFFFFF;
+ *high = (unsigned int)(variable >> 32);
+}
+
+/*
+ * Wakes up DMA queue.
+ */
+static u32 tsi148_DMA_irqhandler(struct tsi148_driver *bridge,
+ int channel_mask)
+{
+ u32 serviced = 0;
+
+ if (channel_mask & TSI148_LCSR_INTS_DMA0S) {
+ wake_up(&bridge->dma_queue[0]);
+ serviced |= TSI148_LCSR_INTC_DMA0C;
+ }
+ if (channel_mask & TSI148_LCSR_INTS_DMA1S) {
+ wake_up(&bridge->dma_queue[1]);
+ serviced |= TSI148_LCSR_INTC_DMA1C;
+ }
+
+ return serviced;
+}
+
+/*
+ * Wake up location monitor queue
+ */
+static u32 tsi148_LM_irqhandler(struct tsi148_driver *bridge, u32 stat)
+{
+ int i;
+ u32 serviced = 0;
+
+ for (i = 0; i < 4; i++) {
+ if (stat & TSI148_LCSR_INTS_LMS[i]) {
+ /* We only enable interrupts if the callback is set */
+ bridge->lm_callback[i](i);
+ serviced |= TSI148_LCSR_INTC_LMC[i];
+ }
+ }
+
+ return serviced;
+}
+
+/*
+ * Wake up mail box queue.
+ *
+ * XXX This functionality is not exposed up though API.
+ */
+static u32 tsi148_MB_irqhandler(struct vme_bridge *tsi148_bridge, u32 stat)
+{
+ int i;
+ u32 val;
+ u32 serviced = 0;
+ struct tsi148_driver *bridge;
+
+ bridge = tsi148_bridge->driver_priv;
+
+ for (i = 0; i < 4; i++) {
+ if (stat & TSI148_LCSR_INTS_MBS[i]) {
+ val = ioread32be(bridge->base + TSI148_GCSR_MBOX[i]);
+ dev_err(tsi148_bridge->parent, "VME Mailbox %d received"
+ ": 0x%x\n", i, val);
+ serviced |= TSI148_LCSR_INTC_MBC[i];
+ }
+ }
+
+ return serviced;
+}
+
+/*
+ * Display error & status message when PERR (PCI) exception interrupt occurs.
+ */
+static u32 tsi148_PERR_irqhandler(struct vme_bridge *tsi148_bridge)
+{
+ struct tsi148_driver *bridge;
+
+ bridge = tsi148_bridge->driver_priv;
+
+ dev_err(tsi148_bridge->parent, "PCI Exception at address: 0x%08x:%08x, "
+ "attributes: %08x\n",
+ ioread32be(bridge->base + TSI148_LCSR_EDPAU),
+ ioread32be(bridge->base + TSI148_LCSR_EDPAL),
+ ioread32be(bridge->base + TSI148_LCSR_EDPAT));
+
+ dev_err(tsi148_bridge->parent, "PCI-X attribute reg: %08x, PCI-X split "
+ "completion reg: %08x\n",
+ ioread32be(bridge->base + TSI148_LCSR_EDPXA),
+ ioread32be(bridge->base + TSI148_LCSR_EDPXS));
+
+ iowrite32be(TSI148_LCSR_EDPAT_EDPCL, bridge->base + TSI148_LCSR_EDPAT);
+
+ return TSI148_LCSR_INTC_PERRC;
+}
+
+/*
+ * Save address and status when VME error interrupt occurs.
+ */
+static u32 tsi148_VERR_irqhandler(struct vme_bridge *tsi148_bridge)
+{
+ unsigned int error_addr_high, error_addr_low;
+ unsigned long long error_addr;
+ u32 error_attrib;
+ struct vme_bus_error *error = NULL;
+ struct tsi148_driver *bridge;
+
+ bridge = tsi148_bridge->driver_priv;
+
+ error_addr_high = ioread32be(bridge->base + TSI148_LCSR_VEAU);
+ error_addr_low = ioread32be(bridge->base + TSI148_LCSR_VEAL);
+ error_attrib = ioread32be(bridge->base + TSI148_LCSR_VEAT);
+
+ reg_join(error_addr_high, error_addr_low, &error_addr);
+
+ /* Check for exception register overflow (we have lost error data) */
+ if (error_attrib & TSI148_LCSR_VEAT_VEOF) {
+ dev_err(tsi148_bridge->parent, "VME Bus Exception Overflow "
+ "Occurred\n");
+ }
+
+ if (err_chk) {
+ error = kmalloc(sizeof(struct vme_bus_error), GFP_ATOMIC);
+ if (error) {
+ error->address = error_addr;
+ error->attributes = error_attrib;
+ list_add_tail(&error->list, &tsi148_bridge->vme_errors);
+ } else {
+ dev_err(tsi148_bridge->parent,
+ "Unable to alloc memory for VMEbus Error reporting\n");
+ }
+ }
+
+ if (!error) {
+ dev_err(tsi148_bridge->parent,
+ "VME Bus Error at address: 0x%llx, attributes: %08x\n",
+ error_addr, error_attrib);
+ }
+
+ /* Clear Status */
+ iowrite32be(TSI148_LCSR_VEAT_VESCL, bridge->base + TSI148_LCSR_VEAT);
+
+ return TSI148_LCSR_INTC_VERRC;
+}
+
+/*
+ * Wake up IACK queue.
+ */
+static u32 tsi148_IACK_irqhandler(struct tsi148_driver *bridge)
+{
+ wake_up(&bridge->iack_queue);
+
+ return TSI148_LCSR_INTC_IACKC;
+}
+
+/*
+ * Calling VME bus interrupt callback if provided.
+ */
+static u32 tsi148_VIRQ_irqhandler(struct vme_bridge *tsi148_bridge,
+ u32 stat)
+{
+ int vec, i, serviced = 0;
+ struct tsi148_driver *bridge;
+
+ bridge = tsi148_bridge->driver_priv;
+
+ for (i = 7; i > 0; i--) {
+ if (stat & (1 << i)) {
+ /*
+ * Note: Even though the registers are defined as
+ * 32-bits in the spec, we only want to issue 8-bit
+ * IACK cycles on the bus, read from offset 3.
+ */
+ vec = ioread8(bridge->base + TSI148_LCSR_VIACK[i] + 3);
+
+ vme_irq_handler(tsi148_bridge, i, vec);
+
+ serviced |= (1 << i);
+ }
+ }
+
+ return serviced;
+}
+
+/*
+ * Top level interrupt handler. Clears appropriate interrupt status bits and
+ * then calls appropriate sub handler(s).
+ */
+static irqreturn_t tsi148_irqhandler(int irq, void *ptr)
+{
+ u32 stat, enable, serviced = 0;
+ struct vme_bridge *tsi148_bridge;
+ struct tsi148_driver *bridge;
+
+ tsi148_bridge = ptr;
+
+ bridge = tsi148_bridge->driver_priv;
+
+ /* Determine which interrupts are unmasked and set */
+ enable = ioread32be(bridge->base + TSI148_LCSR_INTEO);
+ stat = ioread32be(bridge->base + TSI148_LCSR_INTS);
+
+ /* Only look at unmasked interrupts */
+ stat &= enable;
+
+ if (unlikely(!stat))
+ return IRQ_NONE;
+
+ /* Call subhandlers as appropriate */
+ /* DMA irqs */
+ if (stat & (TSI148_LCSR_INTS_DMA1S | TSI148_LCSR_INTS_DMA0S))
+ serviced |= tsi148_DMA_irqhandler(bridge, stat);
+
+ /* Location monitor irqs */
+ if (stat & (TSI148_LCSR_INTS_LM3S | TSI148_LCSR_INTS_LM2S |
+ TSI148_LCSR_INTS_LM1S | TSI148_LCSR_INTS_LM0S))
+ serviced |= tsi148_LM_irqhandler(bridge, stat);
+
+ /* Mail box irqs */
+ if (stat & (TSI148_LCSR_INTS_MB3S | TSI148_LCSR_INTS_MB2S |
+ TSI148_LCSR_INTS_MB1S | TSI148_LCSR_INTS_MB0S))
+ serviced |= tsi148_MB_irqhandler(tsi148_bridge, stat);
+
+ /* PCI bus error */
+ if (stat & TSI148_LCSR_INTS_PERRS)
+ serviced |= tsi148_PERR_irqhandler(tsi148_bridge);
+
+ /* VME bus error */
+ if (stat & TSI148_LCSR_INTS_VERRS)
+ serviced |= tsi148_VERR_irqhandler(tsi148_bridge);
+
+ /* IACK irq */
+ if (stat & TSI148_LCSR_INTS_IACKS)
+ serviced |= tsi148_IACK_irqhandler(bridge);
+
+ /* VME bus irqs */
+ if (stat & (TSI148_LCSR_INTS_IRQ7S | TSI148_LCSR_INTS_IRQ6S |
+ TSI148_LCSR_INTS_IRQ5S | TSI148_LCSR_INTS_IRQ4S |
+ TSI148_LCSR_INTS_IRQ3S | TSI148_LCSR_INTS_IRQ2S |
+ TSI148_LCSR_INTS_IRQ1S))
+ serviced |= tsi148_VIRQ_irqhandler(tsi148_bridge, stat);
+
+ /* Clear serviced interrupts */
+ iowrite32be(serviced, bridge->base + TSI148_LCSR_INTC);
+
+ return IRQ_HANDLED;
+}
+
+static int tsi148_irq_init(struct vme_bridge *tsi148_bridge)
+{
+ int result;
+ unsigned int tmp;
+ struct pci_dev *pdev;
+ struct tsi148_driver *bridge;
+
+ pdev = to_pci_dev(tsi148_bridge->parent);
+
+ bridge = tsi148_bridge->driver_priv;
+
+ /* Initialise list for VME bus errors */
+ INIT_LIST_HEAD(&tsi148_bridge->vme_errors);
+
+ mutex_init(&tsi148_bridge->irq_mtx);
+
+ result = request_irq(pdev->irq,
+ tsi148_irqhandler,
+ IRQF_SHARED,
+ driver_name, tsi148_bridge);
+ if (result) {
+ dev_err(tsi148_bridge->parent, "Can't get assigned pci irq "
+ "vector %02X\n", pdev->irq);
+ return result;
+ }
+
+ /* Enable and unmask interrupts */
+ tmp = TSI148_LCSR_INTEO_DMA1EO | TSI148_LCSR_INTEO_DMA0EO |
+ TSI148_LCSR_INTEO_MB3EO | TSI148_LCSR_INTEO_MB2EO |
+ TSI148_LCSR_INTEO_MB1EO | TSI148_LCSR_INTEO_MB0EO |
+ TSI148_LCSR_INTEO_PERREO | TSI148_LCSR_INTEO_VERREO |
+ TSI148_LCSR_INTEO_IACKEO;
+
+ /* This leaves the following interrupts masked.
+ * TSI148_LCSR_INTEO_VIEEO
+ * TSI148_LCSR_INTEO_SYSFLEO
+ * TSI148_LCSR_INTEO_ACFLEO
+ */
+
+ /* Don't enable Location Monitor interrupts here - they will be
+ * enabled when the location monitors are properly configured and
+ * a callback has been attached.
+ * TSI148_LCSR_INTEO_LM0EO
+ * TSI148_LCSR_INTEO_LM1EO
+ * TSI148_LCSR_INTEO_LM2EO
+ * TSI148_LCSR_INTEO_LM3EO
+ */
+
+ /* Don't enable VME interrupts until we add a handler, else the board
+ * will respond to it and we don't want that unless it knows how to
+ * properly deal with it.
+ * TSI148_LCSR_INTEO_IRQ7EO
+ * TSI148_LCSR_INTEO_IRQ6EO
+ * TSI148_LCSR_INTEO_IRQ5EO
+ * TSI148_LCSR_INTEO_IRQ4EO
+ * TSI148_LCSR_INTEO_IRQ3EO
+ * TSI148_LCSR_INTEO_IRQ2EO
+ * TSI148_LCSR_INTEO_IRQ1EO
+ */
+
+ iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
+ iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
+
+ return 0;
+}
+
+static void tsi148_irq_exit(struct vme_bridge *tsi148_bridge,
+ struct pci_dev *pdev)
+{
+ struct tsi148_driver *bridge = tsi148_bridge->driver_priv;
+
+ /* Turn off interrupts */
+ iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEO);
+ iowrite32be(0x0, bridge->base + TSI148_LCSR_INTEN);
+
+ /* Clear all interrupts */
+ iowrite32be(0xFFFFFFFF, bridge->base + TSI148_LCSR_INTC);
+
+ /* Detach interrupt handler */
+ free_irq(pdev->irq, tsi148_bridge);
+}
+
+/*
+ * Check to see if an IACk has been received, return true (1) or false (0).
+ */
+static int tsi148_iack_received(struct tsi148_driver *bridge)
+{
+ u32 tmp;
+
+ tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
+
+ if (tmp & TSI148_LCSR_VICR_IRQS)
+ return 0;
+ else
+ return 1;
+}
+
+/*
+ * Configure VME interrupt
+ */
+static void tsi148_irq_set(struct vme_bridge *tsi148_bridge, int level,
+ int state, int sync)
+{
+ struct pci_dev *pdev;
+ u32 tmp;
+ struct tsi148_driver *bridge;
+
+ bridge = tsi148_bridge->driver_priv;
+
+ /* We need to do the ordering differently for enabling and disabling */
+ if (state == 0) {
+ tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
+ tmp &= ~TSI148_LCSR_INTEN_IRQEN[level - 1];
+ iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
+
+ tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
+ tmp &= ~TSI148_LCSR_INTEO_IRQEO[level - 1];
+ iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
+
+ if (sync != 0) {
+ pdev = to_pci_dev(tsi148_bridge->parent);
+ synchronize_irq(pdev->irq);
+ }
+ } else {
+ tmp = ioread32be(bridge->base + TSI148_LCSR_INTEO);
+ tmp |= TSI148_LCSR_INTEO_IRQEO[level - 1];
+ iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEO);
+
+ tmp = ioread32be(bridge->base + TSI148_LCSR_INTEN);
+ tmp |= TSI148_LCSR_INTEN_IRQEN[level - 1];
+ iowrite32be(tmp, bridge->base + TSI148_LCSR_INTEN);
+ }
+}
+
+/*
+ * Generate a VME bus interrupt at the requested level & vector. Wait for
+ * interrupt to be acked.
+ */
+static int tsi148_irq_generate(struct vme_bridge *tsi148_bridge, int level,
+ int statid)
+{
+ u32 tmp;
+ struct tsi148_driver *bridge;
+
+ bridge = tsi148_bridge->driver_priv;
+
+ mutex_lock(&bridge->vme_int);
+
+ /* Read VICR register */
+ tmp = ioread32be(bridge->base + TSI148_LCSR_VICR);
+
+ /* Set Status/ID */
+ tmp = (tmp & ~TSI148_LCSR_VICR_STID_M) |
+ (statid & TSI148_LCSR_VICR_STID_M);
+ iowrite32be(tmp, bridge->base + TSI148_LCSR_VICR);
+
+ /* 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, &region,
+ &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);
+
+ /* Fill out previous descriptors "Next Address" */
+ if (entry->list.prev != &list->entries) {
+ prev = list_entry(entry->list.prev, struct tsi148_dma_entry,
+ list);
+ /* We need the bus address for the pointer */
+ entry->dma_handle = dma_map_single(tsi148_bridge->parent,
+ &entry->descriptor,
+ sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
+
+ reg_split((unsigned long long)entry->dma_handle, &address_high,
+ &address_low);
+ entry->descriptor.dnlau = cpu_to_be32(address_high);
+ entry->descriptor.dnlal = cpu_to_be32(address_low);
+
+ }
+
+ return 0;
+
+err_dest:
+err_source:
+err_align:
+ kfree(entry);
+err_mem:
+ return retval;
+}
+
+/*
+ * Check to see if the provided DMA channel is busy.
+ */
+static int tsi148_dma_busy(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 = 0;
+ 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);
+
+ entry->dma_handle = dma_map_single(tsi148_bridge->parent,
+ &entry->descriptor,
+ sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE);
+
+ 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);
+
+ wait_event_interruptible(bridge->dma_queue[channel],
+ tsi148_dma_busy(ctrlr->parent, channel));
+
+ /*
+ * 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;
+ }
+
+ /* 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");