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pci: Implement probing and config r/w for grackle

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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
This commit is contained in:
Andreas Färber 2010-08-24 22:48:51 +00:00
parent 884432c2da
commit 6ed10d93ed
1 changed files with 175 additions and 5 deletions
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180
src/add-ons/kernel/bus_managers/pci/arch/ppc/openfirmware/grackle.cpp
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@ -1,7 +1,33 @@
/* /*
* Copyright 2010 Andreas Färber <andreas.faerber@web.de> * Copyright 2010 Andreas Färber <andreas.faerber@web.de>
* Copyright 2006, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
* All rights reserved. Distributed under the terms of the MIT License. * All rights reserved. Distributed under the terms of the MIT License.
*/ */
/*-
* Copyright (c) 2000 Tsubai Masanari. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <KernelExport.h> #include <KernelExport.h>
@ -15,11 +41,75 @@
#include "pci_openfirmware_priv.h" #include "pci_openfirmware_priv.h"
//#define TRACE_GRACKLE
#ifdef TRACE_GRACKLE
#define TRACE(fmt...) dprintf(fmt)
#else
#define TRACE(fmt...) ;
#endif
struct grackle_range {
uint32_t pci_hi;
uint32_t pci_mid;
uint32_t pci_lo;
uint32_t host;
uint32_t size_hi;
uint32_t size_lo;
};
struct grackle_host_bridge {
int device_node;
addr_t address_registers;
addr_t data_registers;
uint32 bus;
struct grackle_range ranges[6];
int range_count;
};
#define out8rb(address, value) ppc_out8((vuint8*)(address), value)
#define out16rb(address, value) ppc_out16_reverse((vuint16*)(address), value)
#define out32rb(address, value) ppc_out32_reverse((vuint32*)(address), value)
#define in8rb(address) ppc_in8((const vuint8*)(address))
#define in16rb(address) ppc_in16_reverse((const vuint16*)(address))
#define in32rb(address) ppc_in32_reverse((const vuint32*)(address))
static status_t static status_t
grackle_read_pci_config(void *cookie, uint8 bus, uint8 device, uint8 function, grackle_read_pci_config(void *cookie, uint8 bus, uint8 device, uint8 function,
uint8 offset, uint8 size, uint32 *value) uint8 offset, uint8 size, uint32 *value)
{ {
return B_ERROR; grackle_host_bridge *bridge = (grackle_host_bridge*)cookie;
TRACE("grackle_read_pci_config(bus=%u, dev=%u, func=%u, offset=%u, "
"size=%u)\n", (int)bus, (int)device, (int)function, (int)offset,
(int)size);
out32rb(bridge->address_registers, (1 << 31)
| (bus << 16) | ((device & 0x1f) << 11) | ((function & 0x7) << 8)
| (offset & 0xfc));
addr_t dataAddress = bridge->data_registers + (offset & 0x3);
switch (size) {
case 1:
*value = in8rb(dataAddress);
break;
case 2:
*value = in16rb(dataAddress);
break;
case 4:
*value = in32rb(dataAddress);
break;
default:
*value = 0xffffffff;
break;
}
out32rb(bridge->address_registers, 0);
return B_OK;
} }
@ -27,14 +117,38 @@ static status_t
grackle_write_pci_config(void *cookie, uint8 bus, uint8 device, uint8 function, grackle_write_pci_config(void *cookie, uint8 bus, uint8 device, uint8 function,
uint8 offset, uint8 size, uint32 value) uint8 offset, uint8 size, uint32 value)
{ {
return B_ERROR; grackle_host_bridge *bridge = (grackle_host_bridge*)cookie;
TRACE("grackle_write_pci_config(bus=%u, dev=%u, func=%u, offset=%u, "
"size=%u, value=%lu)\n", (int)bus, (int)device, (int)function,
(int)offset, (int)size, value);
out32rb(bridge->address_registers, (1 << 31)
| (bus << 16) | ((device & 0x1f) << 11) | ((function & 0x7) << 8)
| (offset & 0xfc));
addr_t dataAddress = bridge->data_registers + (offset & 0x3);
switch (size) {
case 1:
out8rb(dataAddress, (uint8)value);
break;
case 2:
out16rb(dataAddress, (uint16)value);
break;
case 4:
out32rb(dataAddress, value);
break;
}
out32rb(bridge->address_registers, 0);
return B_OK;
} }
static status_t static status_t
grackle_get_max_bus_devices(void *cookie, int32 *count) grackle_get_max_bus_devices(void *cookie, int32 *count)
{ {
*count = 0; *count = 32;
return B_OK; return B_OK;
} }
@ -71,8 +185,64 @@ ppc_openfirmware_probe_grackle(int deviceNode,
if (!compatibleValue.ContainsElement("grackle")) if (!compatibleValue.ContainsElement("grackle"))
return B_ERROR; return B_ERROR;
panic("ppc_openfirmware_probe_grackle(): not implemented yet\n"); uint32_t busrange[2];
if (of_getprop(deviceNode, "bus-range", busrange, sizeof(busrange)) != 8)
return B_ERROR;
status_t error = pci_controller_add(&sGracklePCIController, NULL); grackle_host_bridge *bridge =
(grackle_host_bridge*)malloc(sizeof(grackle_host_bridge));
if (bridge == NULL)
return B_NO_MEMORY;
bridge->device_node = deviceNode;
bridge->address_registers = 0xfec00000;
bridge->data_registers = 0xfee00000;
bridge->bus = busrange[0];
memset(bridge->ranges, 0, sizeof(bridge->ranges));
int bytesRead = of_getprop(deviceNode, "ranges", bridge->ranges,
sizeof(bridge->ranges));
if (bytesRead < 0) {
dprintf("ppc_openfirmware_probe_grackle: Could not get ranges.\n");
free(bridge);
return B_ERROR;
}
bridge->range_count = bytesRead / sizeof(grackle_range);
grackle_range *ioRange = NULL;
grackle_range *memoryRanges[2];
int memoryRangeCount = 0;
for (int i = 0; i < bridge->range_count; i++) {
grackle_range *range = bridge->ranges + i;
switch (range->pci_hi & OFW_PCI_PHYS_HI_SPACEMASK) {
case OFW_PCI_PHYS_HI_SPACE_CONFIG:
break;
case OFW_PCI_PHYS_HI_SPACE_IO:
ioRange = range;
break;
case OFW_PCI_PHYS_HI_SPACE_MEM32:
memoryRanges[memoryRangeCount++] = range;
break;
case OFW_PCI_PHYS_HI_SPACE_MEM64:
break;
}
}
if (ioRange == NULL) {
dprintf("ppc_openfirmware_probe_grackle: Can't find io range.\n");
free(bridge);
return B_ERROR;
}
if (memoryRangeCount == 0) {
dprintf("ppc_openfirmware_probe_grackle: Can't find mem ranges.\n");
free(bridge);
return B_ERROR;
}
status_t error = pci_controller_add(&sGracklePCIController, bridge);
if (error != B_OK)
free(bridge);
return error; return error;
} }