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gt64xxx.c
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/*
* QEMU GT64120 PCI host
*
* Copyright (c) 2006,2007 Aurelien Jarno
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw.h"
#include "mips.h"
#include "pci.h"
#include "pc.h"
typedef target_phys_addr_t pci_addr_t;
#include "pci_host.h"
//#define DEBUG
#ifdef DEBUG
#define dprintf(fmt, ...) fprintf(stderr, "%s: " fmt, __FUNCTION__, ##__VA_ARGS__)
#else
#define dprintf(fmt, ...)
#endif
#define GT_REGS (0x1000 >> 2)
/* CPU Configuration */
#define GT_CPU (0x000 >> 2)
#define GT_MULTI (0x120 >> 2)
/* CPU Address Decode */
#define GT_SCS10LD (0x008 >> 2)
#define GT_SCS10HD (0x010 >> 2)
#define GT_SCS32LD (0x018 >> 2)
#define GT_SCS32HD (0x020 >> 2)
#define GT_CS20LD (0x028 >> 2)
#define GT_CS20HD (0x030 >> 2)
#define GT_CS3BOOTLD (0x038 >> 2)
#define GT_CS3BOOTHD (0x040 >> 2)
#define GT_PCI0IOLD (0x048 >> 2)
#define GT_PCI0IOHD (0x050 >> 2)
#define GT_PCI0M0LD (0x058 >> 2)
#define GT_PCI0M0HD (0x060 >> 2)
#define GT_PCI0M1LD (0x080 >> 2)
#define GT_PCI0M1HD (0x088 >> 2)
#define GT_PCI1IOLD (0x090 >> 2)
#define GT_PCI1IOHD (0x098 >> 2)
#define GT_PCI1M0LD (0x0a0 >> 2)
#define GT_PCI1M0HD (0x0a8 >> 2)
#define GT_PCI1M1LD (0x0b0 >> 2)
#define GT_PCI1M1HD (0x0b8 >> 2)
#define GT_ISD (0x068 >> 2)
#define GT_SCS10AR (0x0d0 >> 2)
#define GT_SCS32AR (0x0d8 >> 2)
#define GT_CS20R (0x0e0 >> 2)
#define GT_CS3BOOTR (0x0e8 >> 2)
#define GT_PCI0IOREMAP (0x0f0 >> 2)
#define GT_PCI0M0REMAP (0x0f8 >> 2)
#define GT_PCI0M1REMAP (0x100 >> 2)
#define GT_PCI1IOREMAP (0x108 >> 2)
#define GT_PCI1M0REMAP (0x110 >> 2)
#define GT_PCI1M1REMAP (0x118 >> 2)
/* CPU Error Report */
#define GT_CPUERR_ADDRLO (0x070 >> 2)
#define GT_CPUERR_ADDRHI (0x078 >> 2)
#define GT_CPUERR_DATALO (0x128 >> 2) /* GT-64120A only */
#define GT_CPUERR_DATAHI (0x130 >> 2) /* GT-64120A only */
#define GT_CPUERR_PARITY (0x138 >> 2) /* GT-64120A only */
/* CPU Sync Barrier */
#define GT_PCI0SYNC (0x0c0 >> 2)
#define GT_PCI1SYNC (0x0c8 >> 2)
/* SDRAM and Device Address Decode */
#define GT_SCS0LD (0x400 >> 2)
#define GT_SCS0HD (0x404 >> 2)
#define GT_SCS1LD (0x408 >> 2)
#define GT_SCS1HD (0x40c >> 2)
#define GT_SCS2LD (0x410 >> 2)
#define GT_SCS2HD (0x414 >> 2)
#define GT_SCS3LD (0x418 >> 2)
#define GT_SCS3HD (0x41c >> 2)
#define GT_CS0LD (0x420 >> 2)
#define GT_CS0HD (0x424 >> 2)
#define GT_CS1LD (0x428 >> 2)
#define GT_CS1HD (0x42c >> 2)
#define GT_CS2LD (0x430 >> 2)
#define GT_CS2HD (0x434 >> 2)
#define GT_CS3LD (0x438 >> 2)
#define GT_CS3HD (0x43c >> 2)
#define GT_BOOTLD (0x440 >> 2)
#define GT_BOOTHD (0x444 >> 2)
#define GT_ADERR (0x470 >> 2)
/* SDRAM Configuration */
#define GT_SDRAM_CFG (0x448 >> 2)
#define GT_SDRAM_OPMODE (0x474 >> 2)
#define GT_SDRAM_BM (0x478 >> 2)
#define GT_SDRAM_ADDRDECODE (0x47c >> 2)
/* SDRAM Parameters */
#define GT_SDRAM_B0 (0x44c >> 2)
#define GT_SDRAM_B1 (0x450 >> 2)
#define GT_SDRAM_B2 (0x454 >> 2)
#define GT_SDRAM_B3 (0x458 >> 2)
/* Device Parameters */
#define GT_DEV_B0 (0x45c >> 2)
#define GT_DEV_B1 (0x460 >> 2)
#define GT_DEV_B2 (0x464 >> 2)
#define GT_DEV_B3 (0x468 >> 2)
#define GT_DEV_BOOT (0x46c >> 2)
/* ECC */
#define GT_ECC_ERRDATALO (0x480 >> 2) /* GT-64120A only */
#define GT_ECC_ERRDATAHI (0x484 >> 2) /* GT-64120A only */
#define GT_ECC_MEM (0x488 >> 2) /* GT-64120A only */
#define GT_ECC_CALC (0x48c >> 2) /* GT-64120A only */
#define GT_ECC_ERRADDR (0x490 >> 2) /* GT-64120A only */
/* DMA Record */
#define GT_DMA0_CNT (0x800 >> 2)
#define GT_DMA1_CNT (0x804 >> 2)
#define GT_DMA2_CNT (0x808 >> 2)
#define GT_DMA3_CNT (0x80c >> 2)
#define GT_DMA0_SA (0x810 >> 2)
#define GT_DMA1_SA (0x814 >> 2)
#define GT_DMA2_SA (0x818 >> 2)
#define GT_DMA3_SA (0x81c >> 2)
#define GT_DMA0_DA (0x820 >> 2)
#define GT_DMA1_DA (0x824 >> 2)
#define GT_DMA2_DA (0x828 >> 2)
#define GT_DMA3_DA (0x82c >> 2)
#define GT_DMA0_NEXT (0x830 >> 2)
#define GT_DMA1_NEXT (0x834 >> 2)
#define GT_DMA2_NEXT (0x838 >> 2)
#define GT_DMA3_NEXT (0x83c >> 2)
#define GT_DMA0_CUR (0x870 >> 2)
#define GT_DMA1_CUR (0x874 >> 2)
#define GT_DMA2_CUR (0x878 >> 2)
#define GT_DMA3_CUR (0x87c >> 2)
/* DMA Channel Control */
#define GT_DMA0_CTRL (0x840 >> 2)
#define GT_DMA1_CTRL (0x844 >> 2)
#define GT_DMA2_CTRL (0x848 >> 2)
#define GT_DMA3_CTRL (0x84c >> 2)
/* DMA Arbiter */
#define GT_DMA_ARB (0x860 >> 2)
/* Timer/Counter */
#define GT_TC0 (0x850 >> 2)
#define GT_TC1 (0x854 >> 2)
#define GT_TC2 (0x858 >> 2)
#define GT_TC3 (0x85c >> 2)
#define GT_TC_CONTROL (0x864 >> 2)
/* PCI Internal */
#define GT_PCI0_CMD (0xc00 >> 2)
#define GT_PCI0_TOR (0xc04 >> 2)
#define GT_PCI0_BS_SCS10 (0xc08 >> 2)
#define GT_PCI0_BS_SCS32 (0xc0c >> 2)
#define GT_PCI0_BS_CS20 (0xc10 >> 2)
#define GT_PCI0_BS_CS3BT (0xc14 >> 2)
#define GT_PCI1_IACK (0xc30 >> 2)
#define GT_PCI0_IACK (0xc34 >> 2)
#define GT_PCI0_BARE (0xc3c >> 2)
#define GT_PCI0_PREFMBR (0xc40 >> 2)
#define GT_PCI0_SCS10_BAR (0xc48 >> 2)
#define GT_PCI0_SCS32_BAR (0xc4c >> 2)
#define GT_PCI0_CS20_BAR (0xc50 >> 2)
#define GT_PCI0_CS3BT_BAR (0xc54 >> 2)
#define GT_PCI0_SSCS10_BAR (0xc58 >> 2)
#define GT_PCI0_SSCS32_BAR (0xc5c >> 2)
#define GT_PCI0_SCS3BT_BAR (0xc64 >> 2)
#define GT_PCI1_CMD (0xc80 >> 2)
#define GT_PCI1_TOR (0xc84 >> 2)
#define GT_PCI1_BS_SCS10 (0xc88 >> 2)
#define GT_PCI1_BS_SCS32 (0xc8c >> 2)
#define GT_PCI1_BS_CS20 (0xc90 >> 2)
#define GT_PCI1_BS_CS3BT (0xc94 >> 2)
#define GT_PCI1_BARE (0xcbc >> 2)
#define GT_PCI1_PREFMBR (0xcc0 >> 2)
#define GT_PCI1_SCS10_BAR (0xcc8 >> 2)
#define GT_PCI1_SCS32_BAR (0xccc >> 2)
#define GT_PCI1_CS20_BAR (0xcd0 >> 2)
#define GT_PCI1_CS3BT_BAR (0xcd4 >> 2)
#define GT_PCI1_SSCS10_BAR (0xcd8 >> 2)
#define GT_PCI1_SSCS32_BAR (0xcdc >> 2)
#define GT_PCI1_SCS3BT_BAR (0xce4 >> 2)
#define GT_PCI1_CFGADDR (0xcf0 >> 2)
#define GT_PCI1_CFGDATA (0xcf4 >> 2)
#define GT_PCI0_CFGADDR (0xcf8 >> 2)
#define GT_PCI0_CFGDATA (0xcfc >> 2)
/* Interrupts */
#define GT_INTRCAUSE (0xc18 >> 2)
#define GT_INTRMASK (0xc1c >> 2)
#define GT_PCI0_ICMASK (0xc24 >> 2)
#define GT_PCI0_SERR0MASK (0xc28 >> 2)
#define GT_CPU_INTSEL (0xc70 >> 2)
#define GT_PCI0_INTSEL (0xc74 >> 2)
#define GT_HINTRCAUSE (0xc98 >> 2)
#define GT_HINTRMASK (0xc9c >> 2)
#define GT_PCI0_HICMASK (0xca4 >> 2)
#define GT_PCI1_SERR1MASK (0xca8 >> 2)
typedef PCIHostState GT64120PCIState;
#define PCI_MAPPING_ENTRY(regname) \
target_phys_addr_t regname ##_start; \
target_phys_addr_t regname ##_length; \
int regname ##_handle
typedef struct GT64120State {
GT64120PCIState *pci;
uint32_t regs[GT_REGS];
PCI_MAPPING_ENTRY(PCI0IO);
PCI_MAPPING_ENTRY(ISD);
} GT64120State;
/* Adjust range to avoid touching space which isn't mappable via PCI */
/* XXX: Hardcoded values for Malta: 0x1e000000 - 0x1f100000
0x1fc00000 - 0x1fd00000 */
static void check_reserved_space (target_phys_addr_t *start,
target_phys_addr_t *length)
{
target_phys_addr_t begin = *start;
target_phys_addr_t end = *start + *length;
if (end >= 0x1e000000LL && end < 0x1f100000LL)
end = 0x1e000000LL;
if (begin >= 0x1e000000LL && begin < 0x1f100000LL)
begin = 0x1f100000LL;
if (end >= 0x1fc00000LL && end < 0x1fd00000LL)
end = 0x1fc00000LL;
if (begin >= 0x1fc00000LL && begin < 0x1fd00000LL)
begin = 0x1fd00000LL;
/* XXX: This is broken when a reserved range splits the requested range */
if (end >= 0x1f100000LL && begin < 0x1e000000LL)
end = 0x1e000000LL;
if (end >= 0x1fd00000LL && begin < 0x1fc00000LL)
end = 0x1fc00000LL;
*start = begin;
*length = end - begin;
}
static void gt64120_isd_mapping(GT64120State *s)
{
target_phys_addr_t start = s->regs[GT_ISD] << 21;
target_phys_addr_t length = 0x1000;
if (s->ISD_length)
cpu_register_physical_memory(s->ISD_start, s->ISD_length,
IO_MEM_UNASSIGNED);
check_reserved_space(&start, &length);
length = 0x1000;
/* Map new address */
dprintf("ISD: %x@%x -> %x@%x, %x\n", s->ISD_length, s->ISD_start,
length, start, s->ISD_handle);
s->ISD_start = start;
s->ISD_length = length;
cpu_register_physical_memory(s->ISD_start, s->ISD_length, s->ISD_handle);
}
static void gt64120_pci_mapping(GT64120State *s)
{
/* Update IO mapping */
if ((s->regs[GT_PCI0IOLD] & 0x7f) <= s->regs[GT_PCI0IOHD])
{
/* Unmap old IO address */
if (s->PCI0IO_length)
{
cpu_register_physical_memory(s->PCI0IO_start, s->PCI0IO_length, IO_MEM_UNASSIGNED);
}
/* Map new IO address */
s->PCI0IO_start = s->regs[GT_PCI0IOLD] << 21;
s->PCI0IO_length = ((s->regs[GT_PCI0IOHD] + 1) - (s->regs[GT_PCI0IOLD] & 0x7f)) << 21;
isa_mem_base = s->PCI0IO_start;
isa_mmio_init(s->PCI0IO_start, s->PCI0IO_length);
}
}
static void gt64120_writel (void *opaque, target_phys_addr_t addr,
uint32_t val)
{
GT64120State *s = opaque;
uint32_t saddr;
if (!(s->regs[GT_CPU] & 0x00001000))
val = bswap32(val);
saddr = (addr & 0xfff) >> 2;
switch (saddr) {
/* CPU Configuration */
case GT_CPU:
s->regs[GT_CPU] = val;
break;
case GT_MULTI:
/* Read-only register as only one GT64xxx is present on the CPU bus */
break;
/* CPU Address Decode */
case GT_PCI0IOLD:
s->regs[GT_PCI0IOLD] = val & 0x00007fff;
s->regs[GT_PCI0IOREMAP] = val & 0x000007ff;
gt64120_pci_mapping(s);
break;
case GT_PCI0M0LD:
s->regs[GT_PCI0M0LD] = val & 0x00007fff;
s->regs[GT_PCI0M0REMAP] = val & 0x000007ff;
break;
case GT_PCI0M1LD:
s->regs[GT_PCI0M1LD] = val & 0x00007fff;
s->regs[GT_PCI0M1REMAP] = val & 0x000007ff;
break;
case GT_PCI1IOLD:
s->regs[GT_PCI1IOLD] = val & 0x00007fff;
s->regs[GT_PCI1IOREMAP] = val & 0x000007ff;
break;
case GT_PCI1M0LD:
s->regs[GT_PCI1M0LD] = val & 0x00007fff;
s->regs[GT_PCI1M0REMAP] = val & 0x000007ff;
break;
case GT_PCI1M1LD:
s->regs[GT_PCI1M1LD] = val & 0x00007fff;
s->regs[GT_PCI1M1REMAP] = val & 0x000007ff;
break;
case GT_PCI0IOHD:
s->regs[saddr] = val & 0x0000007f;
gt64120_pci_mapping(s);
break;
case GT_PCI0M0HD:
case GT_PCI0M1HD:
case GT_PCI1IOHD:
case GT_PCI1M0HD:
case GT_PCI1M1HD:
s->regs[saddr] = val & 0x0000007f;
break;
case GT_ISD:
s->regs[saddr] = val & 0x00007fff;
gt64120_isd_mapping(s);
break;
case GT_PCI0IOREMAP:
case GT_PCI0M0REMAP:
case GT_PCI0M1REMAP:
case GT_PCI1IOREMAP:
case GT_PCI1M0REMAP:
case GT_PCI1M1REMAP:
s->regs[saddr] = val & 0x000007ff;
break;
/* CPU Error Report */
case GT_CPUERR_ADDRLO:
case GT_CPUERR_ADDRHI:
case GT_CPUERR_DATALO:
case GT_CPUERR_DATAHI:
case GT_CPUERR_PARITY:
/* Read-only registers, do nothing */
break;
/* CPU Sync Barrier */
case GT_PCI0SYNC:
case GT_PCI1SYNC:
/* Read-only registers, do nothing */
break;
/* SDRAM and Device Address Decode */
case GT_SCS0LD:
case GT_SCS0HD:
case GT_SCS1LD:
case GT_SCS1HD:
case GT_SCS2LD:
case GT_SCS2HD:
case GT_SCS3LD:
case GT_SCS3HD:
case GT_CS0LD:
case GT_CS0HD:
case GT_CS1LD:
case GT_CS1HD:
case GT_CS2LD:
case GT_CS2HD:
case GT_CS3LD:
case GT_CS3HD:
case GT_BOOTLD:
case GT_BOOTHD:
case GT_ADERR:
/* SDRAM Configuration */
case GT_SDRAM_CFG:
case GT_SDRAM_OPMODE:
case GT_SDRAM_BM:
case GT_SDRAM_ADDRDECODE:
/* Accept and ignore SDRAM interleave configuration */
s->regs[saddr] = val;
break;
/* Device Parameters */
case GT_DEV_B0:
case GT_DEV_B1:
case GT_DEV_B2:
case GT_DEV_B3:
case GT_DEV_BOOT:
/* Not implemented */
dprintf ("Unimplemented device register offset 0x%x\n", saddr << 2);
break;
/* ECC */
case GT_ECC_ERRDATALO:
case GT_ECC_ERRDATAHI:
case GT_ECC_MEM:
case GT_ECC_CALC:
case GT_ECC_ERRADDR:
/* Read-only registers, do nothing */
break;
/* DMA Record */
case GT_DMA0_CNT:
case GT_DMA1_CNT:
case GT_DMA2_CNT:
case GT_DMA3_CNT:
case GT_DMA0_SA:
case GT_DMA1_SA:
case GT_DMA2_SA:
case GT_DMA3_SA:
case GT_DMA0_DA:
case GT_DMA1_DA:
case GT_DMA2_DA:
case GT_DMA3_DA:
case GT_DMA0_NEXT:
case GT_DMA1_NEXT:
case GT_DMA2_NEXT:
case GT_DMA3_NEXT:
case GT_DMA0_CUR:
case GT_DMA1_CUR:
case GT_DMA2_CUR:
case GT_DMA3_CUR:
/* Not implemented */
dprintf ("Unimplemented DMA register offset 0x%x\n", saddr << 2);
break;
/* DMA Channel Control */
case GT_DMA0_CTRL:
case GT_DMA1_CTRL:
case GT_DMA2_CTRL:
case GT_DMA3_CTRL:
/* Not implemented */
dprintf ("Unimplemented DMA register offset 0x%x\n", saddr << 2);
break;
/* DMA Arbiter */
case GT_DMA_ARB:
/* Not implemented */
dprintf ("Unimplemented DMA register offset 0x%x\n", saddr << 2);
break;
/* Timer/Counter */
case GT_TC0:
case GT_TC1:
case GT_TC2:
case GT_TC3:
case GT_TC_CONTROL:
/* Not implemented */
dprintf ("Unimplemented timer register offset 0x%x\n", saddr << 2);
break;
/* PCI Internal */
case GT_PCI0_CMD:
case GT_PCI1_CMD:
s->regs[saddr] = val & 0x0401fc0f;
break;
case GT_PCI0_TOR:
case GT_PCI0_BS_SCS10:
case GT_PCI0_BS_SCS32:
case GT_PCI0_BS_CS20:
case GT_PCI0_BS_CS3BT:
case GT_PCI1_IACK:
case GT_PCI0_IACK:
case GT_PCI0_BARE:
case GT_PCI0_PREFMBR:
case GT_PCI0_SCS10_BAR:
case GT_PCI0_SCS32_BAR:
case GT_PCI0_CS20_BAR:
case GT_PCI0_CS3BT_BAR:
case GT_PCI0_SSCS10_BAR:
case GT_PCI0_SSCS32_BAR:
case GT_PCI0_SCS3BT_BAR:
case GT_PCI1_TOR:
case GT_PCI1_BS_SCS10:
case GT_PCI1_BS_SCS32:
case GT_PCI1_BS_CS20:
case GT_PCI1_BS_CS3BT:
case GT_PCI1_BARE:
case GT_PCI1_PREFMBR:
case GT_PCI1_SCS10_BAR:
case GT_PCI1_SCS32_BAR:
case GT_PCI1_CS20_BAR:
case GT_PCI1_CS3BT_BAR:
case GT_PCI1_SSCS10_BAR:
case GT_PCI1_SSCS32_BAR:
case GT_PCI1_SCS3BT_BAR:
case GT_PCI1_CFGADDR:
case GT_PCI1_CFGDATA:
/* not implemented */
break;
case GT_PCI0_CFGADDR:
s->pci->config_reg = val & 0x80fffffc;
break;
case GT_PCI0_CFGDATA:
if (!(s->regs[GT_PCI0_CMD] & 1) && (s->pci->config_reg & 0x00fff800))
val = bswap32(val);
if (s->pci->config_reg & (1u << 31))
pci_data_write(s->pci->bus, s->pci->config_reg, val, 4);
break;
/* Interrupts */
case GT_INTRCAUSE:
/* not really implemented */
s->regs[saddr] = ~(~(s->regs[saddr]) | ~(val & 0xfffffffe));
s->regs[saddr] |= !!(s->regs[saddr] & 0xfffffffe);
dprintf("INTRCAUSE %x\n", val);
break;
case GT_INTRMASK:
s->regs[saddr] = val & 0x3c3ffffe;
dprintf("INTRMASK %x\n", val);
break;
case GT_PCI0_ICMASK:
s->regs[saddr] = val & 0x03fffffe;
dprintf("ICMASK %x\n", val);
break;
case GT_PCI0_SERR0MASK:
s->regs[saddr] = val & 0x0000003f;
dprintf("SERR0MASK %x\n", val);
break;
/* Reserved when only PCI_0 is configured. */
case GT_HINTRCAUSE:
case GT_CPU_INTSEL:
case GT_PCI0_INTSEL:
case GT_HINTRMASK:
case GT_PCI0_HICMASK:
case GT_PCI1_SERR1MASK:
/* not implemented */
break;
/* SDRAM Parameters */
case GT_SDRAM_B0:
case GT_SDRAM_B1:
case GT_SDRAM_B2:
case GT_SDRAM_B3:
/* We don't simulate electrical parameters of the SDRAM.
Accept, but ignore the values. */
s->regs[saddr] = val;
break;
default:
dprintf ("Bad register offset 0x%x\n", (int)addr);
break;
}
}
static uint32_t gt64120_readl (void *opaque,
target_phys_addr_t addr)
{
GT64120State *s = opaque;
uint32_t val;
uint32_t saddr;
saddr = (addr & 0xfff) >> 2;
switch (saddr) {
/* CPU Configuration */
case GT_MULTI:
/* Only one GT64xxx is present on the CPU bus, return
the initial value */
val = s->regs[saddr];
break;
/* CPU Error Report */
case GT_CPUERR_ADDRLO:
case GT_CPUERR_ADDRHI:
case GT_CPUERR_DATALO:
case GT_CPUERR_DATAHI:
case GT_CPUERR_PARITY:
/* Emulated memory has no error, always return the initial
values */
val = s->regs[saddr];
break;
/* CPU Sync Barrier */
case GT_PCI0SYNC:
case GT_PCI1SYNC:
/* Reading those register should empty all FIFO on the PCI
bus, which are not emulated. The return value should be
a random value that should be ignored. */
val = 0xc000ffee;
break;
/* ECC */
case GT_ECC_ERRDATALO:
case GT_ECC_ERRDATAHI:
case GT_ECC_MEM:
case GT_ECC_CALC:
case GT_ECC_ERRADDR:
/* Emulated memory has no error, always return the initial
values */
val = s->regs[saddr];
break;
case GT_CPU:
case GT_SCS10LD:
case GT_SCS10HD:
case GT_SCS32LD:
case GT_SCS32HD:
case GT_CS20LD:
case GT_CS20HD:
case GT_CS3BOOTLD:
case GT_CS3BOOTHD:
case GT_SCS10AR:
case GT_SCS32AR:
case GT_CS20R:
case GT_CS3BOOTR:
case GT_PCI0IOLD:
case GT_PCI0M0LD:
case GT_PCI0M1LD:
case GT_PCI1IOLD:
case GT_PCI1M0LD:
case GT_PCI1M1LD:
case GT_PCI0IOHD:
case GT_PCI0M0HD:
case GT_PCI0M1HD:
case GT_PCI1IOHD:
case GT_PCI1M0HD:
case GT_PCI1M1HD:
case GT_PCI0IOREMAP:
case GT_PCI0M0REMAP:
case GT_PCI0M1REMAP:
case GT_PCI1IOREMAP:
case GT_PCI1M0REMAP:
case GT_PCI1M1REMAP:
case GT_ISD:
val = s->regs[saddr];
break;
case GT_PCI0_IACK:
/* Read the IRQ number */
val = pic_read_irq(isa_pic);
break;
/* SDRAM and Device Address Decode */
case GT_SCS0LD:
case GT_SCS0HD:
case GT_SCS1LD:
case GT_SCS1HD:
case GT_SCS2LD:
case GT_SCS2HD:
case GT_SCS3LD:
case GT_SCS3HD:
case GT_CS0LD:
case GT_CS0HD:
case GT_CS1LD:
case GT_CS1HD:
case GT_CS2LD:
case GT_CS2HD:
case GT_CS3LD:
case GT_CS3HD:
case GT_BOOTLD:
case GT_BOOTHD:
case GT_ADERR:
val = s->regs[saddr];
break;
/* SDRAM Configuration */
case GT_SDRAM_CFG:
case GT_SDRAM_OPMODE:
case GT_SDRAM_BM:
case GT_SDRAM_ADDRDECODE:
val = s->regs[saddr];
break;
/* SDRAM Parameters */
case GT_SDRAM_B0:
case GT_SDRAM_B1:
case GT_SDRAM_B2:
case GT_SDRAM_B3:
/* We don't simulate electrical parameters of the SDRAM.
Just return the last written value. */
val = s->regs[saddr];
break;
/* Device Parameters */
case GT_DEV_B0:
case GT_DEV_B1:
case GT_DEV_B2:
case GT_DEV_B3:
case GT_DEV_BOOT:
val = s->regs[saddr];
break;
/* DMA Record */
case GT_DMA0_CNT:
case GT_DMA1_CNT:
case GT_DMA2_CNT:
case GT_DMA3_CNT:
case GT_DMA0_SA:
case GT_DMA1_SA:
case GT_DMA2_SA:
case GT_DMA3_SA:
case GT_DMA0_DA:
case GT_DMA1_DA:
case GT_DMA2_DA:
case GT_DMA3_DA:
case GT_DMA0_NEXT:
case GT_DMA1_NEXT:
case GT_DMA2_NEXT:
case GT_DMA3_NEXT:
case GT_DMA0_CUR:
case GT_DMA1_CUR:
case GT_DMA2_CUR:
case GT_DMA3_CUR:
val = s->regs[saddr];
break;
/* DMA Channel Control */
case GT_DMA0_CTRL:
case GT_DMA1_CTRL:
case GT_DMA2_CTRL:
case GT_DMA3_CTRL:
val = s->regs[saddr];
break;
/* DMA Arbiter */
case GT_DMA_ARB:
val = s->regs[saddr];
break;
/* Timer/Counter */
case GT_TC0:
case GT_TC1:
case GT_TC2:
case GT_TC3:
case GT_TC_CONTROL:
val = s->regs[saddr];
break;
/* PCI Internal */
case GT_PCI0_CFGADDR:
val = s->pci->config_reg;
break;
case GT_PCI0_CFGDATA:
if (!(s->pci->config_reg & (1 << 31)))
val = 0xffffffff;
else
val = pci_data_read(s->pci->bus, s->pci->config_reg, 4);
if (!(s->regs[GT_PCI0_CMD] & 1) && (s->pci->config_reg & 0x00fff800))
val = bswap32(val);
break;
case GT_PCI0_CMD:
case GT_PCI0_TOR:
case GT_PCI0_BS_SCS10:
case GT_PCI0_BS_SCS32:
case GT_PCI0_BS_CS20:
case GT_PCI0_BS_CS3BT:
case GT_PCI1_IACK:
case GT_PCI0_BARE:
case GT_PCI0_PREFMBR:
case GT_PCI0_SCS10_BAR:
case GT_PCI0_SCS32_BAR:
case GT_PCI0_CS20_BAR:
case GT_PCI0_CS3BT_BAR:
case GT_PCI0_SSCS10_BAR:
case GT_PCI0_SSCS32_BAR:
case GT_PCI0_SCS3BT_BAR:
case GT_PCI1_CMD:
case GT_PCI1_TOR:
case GT_PCI1_BS_SCS10:
case GT_PCI1_BS_SCS32:
case GT_PCI1_BS_CS20:
case GT_PCI1_BS_CS3BT:
case GT_PCI1_BARE:
case GT_PCI1_PREFMBR:
case GT_PCI1_SCS10_BAR:
case GT_PCI1_SCS32_BAR:
case GT_PCI1_CS20_BAR:
case GT_PCI1_CS3BT_BAR:
case GT_PCI1_SSCS10_BAR:
case GT_PCI1_SSCS32_BAR:
case GT_PCI1_SCS3BT_BAR:
case GT_PCI1_CFGADDR:
case GT_PCI1_CFGDATA:
val = s->regs[saddr];
break;
/* Interrupts */
case GT_INTRCAUSE:
val = s->regs[saddr];
dprintf("INTRCAUSE %x\n", val);
break;
case GT_INTRMASK:
val = s->regs[saddr];
dprintf("INTRMASK %x\n", val);
break;
case GT_PCI0_ICMASK:
val = s->regs[saddr];
dprintf("ICMASK %x\n", val);
break;
case GT_PCI0_SERR0MASK:
val = s->regs[saddr];
dprintf("SERR0MASK %x\n", val);
break;
/* Reserved when only PCI_0 is configured. */
case GT_HINTRCAUSE:
case GT_CPU_INTSEL:
case GT_PCI0_INTSEL:
case GT_HINTRMASK:
case GT_PCI0_HICMASK:
case GT_PCI1_SERR1MASK:
val = s->regs[saddr];
break;
default:
val = s->regs[saddr];
dprintf ("Bad register offset 0x%x\n", (int)addr);
break;
}
if (!(s->regs[GT_CPU] & 0x00001000))
val = bswap32(val);
return val;
}
static CPUWriteMemoryFunc *gt64120_write[] = {
>64120_writel,
>64120_writel,
>64120_writel,
};
static CPUReadMemoryFunc *gt64120_read[] = {
>64120_readl,
>64120_readl,
>64120_readl,
};
static int pci_gt64120_map_irq(PCIDevice *pci_dev, int irq_num)
{
int slot;
slot = (pci_dev->devfn >> 3);
switch (slot) {
/* PIIX4 USB */
case 10:
return 3;
/* AMD 79C973 Ethernet */
case 11:
return 1;
/* Crystal 4281 Sound */
case 12:
return 2;
/* PCI slot 1 to 4 */
case 18 ... 21:
return ((slot - 18) + irq_num) & 0x03;
/* Unknown device, don't do any translation */
default:
return irq_num;
}
}
static int pci_irq_levels[4];
static void pci_gt64120_set_irq(qemu_irq *pic, int irq_num, int level)
{
int i, pic_irq, pic_level;
pci_irq_levels[irq_num] = level;
/* now we change the pic irq level according to the piix irq mappings */
/* XXX: optimize */
pic_irq = piix4_dev->config[0x60 + irq_num];
if (pic_irq < 16) {
/* The pic level is the logical OR of all the PCI irqs mapped
to it */
pic_level = 0;
for (i = 0; i < 4; i++) {
if (pic_irq == piix4_dev->config[0x60 + i])
pic_level |= pci_irq_levels[i];
}
qemu_set_irq(pic[pic_irq], pic_level);
}
}
static void gt64120_reset(void *opaque)
{
GT64120State *s = opaque;
/* FIXME: Malta specific hw assumptions ahead */
/* CPU Configuration */
#ifdef TARGET_WORDS_BIGENDIAN
s->regs[GT_CPU] = 0x00000000;
#else
s->regs[GT_CPU] = 0x00001000;
#endif
s->regs[GT_MULTI] = 0x00000003;
/* CPU Address decode */
s->regs[GT_SCS10LD] = 0x00000000;
s->regs[GT_SCS10HD] = 0x00000007;
s->regs[GT_SCS32LD] = 0x00000008;
s->regs[GT_SCS32HD] = 0x0000000f;
s->regs[GT_CS20LD] = 0x000000e0;
s->regs[GT_CS20HD] = 0x00000070;
s->regs[GT_CS3BOOTLD] = 0x000000f8;
s->regs[GT_CS3BOOTHD] = 0x0000007f;
s->regs[GT_PCI0IOLD] = 0x00000080;
s->regs[GT_PCI0IOHD] = 0x0000000f;
s->regs[GT_PCI0M0LD] = 0x00000090;
s->regs[GT_PCI0M0HD] = 0x0000001f;
s->regs[GT_ISD] = 0x000000a0;
s->regs[GT_PCI0M1LD] = 0x00000790;
s->regs[GT_PCI0M1HD] = 0x0000001f;
s->regs[GT_PCI1IOLD] = 0x00000100;
s->regs[GT_PCI1IOHD] = 0x0000000f;
s->regs[GT_PCI1M0LD] = 0x00000110;
s->regs[GT_PCI1M0HD] = 0x0000001f;
s->regs[GT_PCI1M1LD] = 0x00000120;
s->regs[GT_PCI1M1HD] = 0x0000002f;
s->regs[GT_SCS10AR] = 0x00000000;
s->regs[GT_SCS32AR] = 0x00000008;
s->regs[GT_CS20R] = 0x000000e0;
s->regs[GT_CS3BOOTR] = 0x000000f8;
s->regs[GT_PCI0IOREMAP] = 0x00000080;
s->regs[GT_PCI0M0REMAP] = 0x00000090;
s->regs[GT_PCI0M1REMAP] = 0x00000790;
s->regs[GT_PCI1IOREMAP] = 0x00000100;
s->regs[GT_PCI1M0REMAP] = 0x00000110;
s->regs[GT_PCI1M1REMAP] = 0x00000120;
/* CPU Error Report */
s->regs[GT_CPUERR_ADDRLO] = 0x00000000;
s->regs[GT_CPUERR_ADDRHI] = 0x00000000;
s->regs[GT_CPUERR_DATALO] = 0xffffffff;
s->regs[GT_CPUERR_DATAHI] = 0xffffffff;
s->regs[GT_CPUERR_PARITY] = 0x000000ff;
/* CPU Sync Barrier */
s->regs[GT_PCI0SYNC] = 0x00000000;
s->regs[GT_PCI1SYNC] = 0x00000000;
/* SDRAM and Device Address Decode */
s->regs[GT_SCS0LD] = 0x00000000;
s->regs[GT_SCS0HD] = 0x00000007;
s->regs[GT_SCS1LD] = 0x00000008;
s->regs[GT_SCS1HD] = 0x0000000f;
s->regs[GT_SCS2LD] = 0x00000010;
s->regs[GT_SCS2HD] = 0x00000017;
s->regs[GT_SCS3LD] = 0x00000018;
s->regs[GT_SCS3HD] = 0x0000001f;
s->regs[GT_CS0LD] = 0x000000c0;
s->regs[GT_CS0HD] = 0x000000c7;
s->regs[GT_CS1LD] = 0x000000c8;
s->regs[GT_CS1HD] = 0x000000cf;
s->regs[GT_CS2LD] = 0x000000d0;
s->regs[GT_CS2HD] = 0x000000df;
s->regs[GT_CS3LD] = 0x000000f0;
s->regs[GT_CS3HD] = 0x000000fb;
s->regs[GT_BOOTLD] = 0x000000fc;
s->regs[GT_BOOTHD] = 0x000000ff;
s->regs[GT_ADERR] = 0xffffffff;
/* SDRAM Configuration */