pci: Implement probing and config r/w for grackle
Based on Motorola MPC106 User Manual and NetBSD's src/sys/arch/macppc/pci/grackle.c 1.11. The MPC106 apparently deviates by requiring the E (enable) bit set to 1 for config read/write to work. git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@38344 a95241bf-73f2-0310-859d-f6bbb57e9c96
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Andreas Färber
parent
884432c2da
commit
6ed10d93ed
@ -1,7 +1,33 @@
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/*
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* Copyright 2010 Andreas Färber <andreas.faerber@web.de>
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* Copyright 2006, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
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* All rights reserved. Distributed under the terms of the MIT License.
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*/
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/*-
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* Copyright (c) 2000 Tsubai Masanari. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <KernelExport.h>
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@ -15,11 +41,75 @@
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#include "pci_openfirmware_priv.h"
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//#define TRACE_GRACKLE
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#ifdef TRACE_GRACKLE
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#define TRACE(fmt...) dprintf(fmt)
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#else
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#define TRACE(fmt...) ;
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#endif
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struct grackle_range {
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uint32_t pci_hi;
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uint32_t pci_mid;
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uint32_t pci_lo;
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uint32_t host;
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uint32_t size_hi;
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uint32_t size_lo;
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};
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struct grackle_host_bridge {
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int device_node;
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addr_t address_registers;
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addr_t data_registers;
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uint32 bus;
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struct grackle_range ranges[6];
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int range_count;
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};
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#define out8rb(address, value) ppc_out8((vuint8*)(address), value)
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#define out16rb(address, value) ppc_out16_reverse((vuint16*)(address), value)
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#define out32rb(address, value) ppc_out32_reverse((vuint32*)(address), value)
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#define in8rb(address) ppc_in8((const vuint8*)(address))
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#define in16rb(address) ppc_in16_reverse((const vuint16*)(address))
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#define in32rb(address) ppc_in32_reverse((const vuint32*)(address))
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static status_t
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grackle_read_pci_config(void *cookie, uint8 bus, uint8 device, uint8 function,
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uint8 offset, uint8 size, uint32 *value)
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{
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return B_ERROR;
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grackle_host_bridge *bridge = (grackle_host_bridge*)cookie;
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TRACE("grackle_read_pci_config(bus=%u, dev=%u, func=%u, offset=%u, "
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"size=%u)\n", (int)bus, (int)device, (int)function, (int)offset,
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(int)size);
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out32rb(bridge->address_registers, (1 << 31)
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| (bus << 16) | ((device & 0x1f) << 11) | ((function & 0x7) << 8)
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| (offset & 0xfc));
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addr_t dataAddress = bridge->data_registers + (offset & 0x3);
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switch (size) {
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case 1:
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*value = in8rb(dataAddress);
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break;
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case 2:
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*value = in16rb(dataAddress);
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break;
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case 4:
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*value = in32rb(dataAddress);
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break;
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default:
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*value = 0xffffffff;
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break;
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}
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out32rb(bridge->address_registers, 0);
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return B_OK;
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}
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@ -27,14 +117,38 @@ static status_t
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grackle_write_pci_config(void *cookie, uint8 bus, uint8 device, uint8 function,
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uint8 offset, uint8 size, uint32 value)
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{
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return B_ERROR;
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grackle_host_bridge *bridge = (grackle_host_bridge*)cookie;
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TRACE("grackle_write_pci_config(bus=%u, dev=%u, func=%u, offset=%u, "
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"size=%u, value=%lu)\n", (int)bus, (int)device, (int)function,
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(int)offset, (int)size, value);
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out32rb(bridge->address_registers, (1 << 31)
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| (bus << 16) | ((device & 0x1f) << 11) | ((function & 0x7) << 8)
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| (offset & 0xfc));
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addr_t dataAddress = bridge->data_registers + (offset & 0x3);
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switch (size) {
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case 1:
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out8rb(dataAddress, (uint8)value);
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break;
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case 2:
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out16rb(dataAddress, (uint16)value);
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break;
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case 4:
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out32rb(dataAddress, value);
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break;
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}
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out32rb(bridge->address_registers, 0);
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return B_OK;
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}
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static status_t
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grackle_get_max_bus_devices(void *cookie, int32 *count)
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{
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*count = 0;
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*count = 32;
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return B_OK;
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}
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@ -71,8 +185,64 @@ ppc_openfirmware_probe_grackle(int deviceNode,
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if (!compatibleValue.ContainsElement("grackle"))
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return B_ERROR;
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panic("ppc_openfirmware_probe_grackle(): not implemented yet\n");
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uint32_t busrange[2];
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if (of_getprop(deviceNode, "bus-range", busrange, sizeof(busrange)) != 8)
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return B_ERROR;
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status_t error = pci_controller_add(&sGracklePCIController, NULL);
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grackle_host_bridge *bridge =
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(grackle_host_bridge*)malloc(sizeof(grackle_host_bridge));
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if (bridge == NULL)
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return B_NO_MEMORY;
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bridge->device_node = deviceNode;
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bridge->address_registers = 0xfec00000;
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bridge->data_registers = 0xfee00000;
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bridge->bus = busrange[0];
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memset(bridge->ranges, 0, sizeof(bridge->ranges));
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int bytesRead = of_getprop(deviceNode, "ranges", bridge->ranges,
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sizeof(bridge->ranges));
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if (bytesRead < 0) {
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dprintf("ppc_openfirmware_probe_grackle: Could not get ranges.\n");
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free(bridge);
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return B_ERROR;
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}
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bridge->range_count = bytesRead / sizeof(grackle_range);
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grackle_range *ioRange = NULL;
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grackle_range *memoryRanges[2];
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int memoryRangeCount = 0;
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for (int i = 0; i < bridge->range_count; i++) {
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grackle_range *range = bridge->ranges + i;
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switch (range->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
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case OFW_PCI_PHYS_HI_SPACE_CONFIG:
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break;
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case OFW_PCI_PHYS_HI_SPACE_IO:
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ioRange = range;
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break;
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case OFW_PCI_PHYS_HI_SPACE_MEM32:
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memoryRanges[memoryRangeCount++] = range;
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break;
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case OFW_PCI_PHYS_HI_SPACE_MEM64:
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break;
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}
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}
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if (ioRange == NULL) {
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dprintf("ppc_openfirmware_probe_grackle: Can't find io range.\n");
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free(bridge);
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return B_ERROR;
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}
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if (memoryRangeCount == 0) {
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dprintf("ppc_openfirmware_probe_grackle: Can't find mem ranges.\n");
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free(bridge);
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return B_ERROR;
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}
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status_t error = pci_controller_add(&sGracklePCIController, bridge);
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if (error != B_OK)
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free(bridge);
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return error;
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}
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