diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/alpha_dp264.c | 177 | ||||
| -rw-r--r-- | hw/alpha_pci.c | 134 | ||||
| -rw-r--r-- | hw/alpha_sys.h | 24 | ||||
| -rw-r--r-- | hw/alpha_typhoon.c | 813 |
4 files changed, 1148 insertions, 0 deletions
diff --git a/hw/alpha_dp264.c b/hw/alpha_dp264.c new file mode 100644 index 0000000000..7c36b21f0c --- /dev/null +++ b/hw/alpha_dp264.c @@ -0,0 +1,177 @@ +/* + * QEMU Alpha DP264/CLIPPER hardware system emulator. + * + * Choose CLIPPER IRQ mappings over, say, DP264, MONET, or WEBBRICK + * variants because CLIPPER doesn't have an SMC669 SuperIO controler + * that we need to emulate as well. + */ + +#include "hw.h" +#include "elf.h" +#include "loader.h" +#include "boards.h" +#include "alpha_sys.h" +#include "sysemu.h" +#include "mc146818rtc.h" +#include "ide.h" + +#define MAX_IDE_BUS 2 + +static uint64_t cpu_alpha_superpage_to_phys(void *opaque, uint64_t addr) +{ + if (((addr >> 41) & 3) == 2) { + addr &= 0xffffffffffull; + } + return addr; +} + +/* Note that there are at least 3 viewpoints of IRQ numbers on Alpha systems. + (0) The dev_irq_n lines into the cpu, which we totally ignore, + (1) The DRIR lines in the typhoon chipset, + (2) The "vector" aka mangled interrupt number reported by SRM PALcode, + (3) The interrupt number assigned by the kernel. + The following function is concerned with (1) only. */ + +static int clipper_pci_map_irq(PCIDevice *d, int irq_num) +{ + int slot = d->devfn >> 3; + + assert(irq_num >= 0 && irq_num <= 3); + + return (slot + 1) * 4 + irq_num; +} + +static void clipper_init(ram_addr_t ram_size, + const char *boot_device, + const char *kernel_filename, + const char *kernel_cmdline, + const char *initrd_filename, + const char *cpu_model) +{ + CPUState *cpus[4]; + PCIBus *pci_bus; + qemu_irq rtc_irq; + long size, i; + const char *palcode_filename; + uint64_t palcode_entry, palcode_low, palcode_high; + uint64_t kernel_entry, kernel_low, kernel_high; + + /* Create up to 4 cpus. */ + memset(cpus, 0, sizeof(cpus)); + for (i = 0; i < smp_cpus; ++i) { + cpus[i] = cpu_init(cpu_model ? cpu_model : "ev67"); + } + + cpus[0]->trap_arg0 = ram_size; + cpus[0]->trap_arg1 = 0; + cpus[0]->trap_arg2 = smp_cpus; + + /* Init the chipset. */ + pci_bus = typhoon_init(ram_size, &rtc_irq, cpus, clipper_pci_map_irq); + + rtc_init(1980, rtc_irq); + pit_init(0x40, 0); + isa_create_simple("i8042"); + + /* VGA setup. Don't bother loading the bios. */ + alpha_pci_vga_setup(pci_bus); + + /* Serial code setup. */ + for (i = 0; i < MAX_SERIAL_PORTS; ++i) { + if (serial_hds[i]) { + serial_isa_init(i, serial_hds[i]); + } + } + + /* Network setup. e1000 is good enough, failing Tulip support. */ + for (i = 0; i < nb_nics; i++) { + pci_nic_init_nofail(&nd_table[i], "e1000", NULL); + } + + /* IDE disk setup. */ + { + DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; + ide_drive_get(hd, MAX_IDE_BUS); + + pci_cmd646_ide_init(pci_bus, hd, 0); + } + + /* Load PALcode. Given that this is not "real" cpu palcode, + but one explicitly written for the emulation, we might as + well load it directly from and ELF image. */ + palcode_filename = (bios_name ? bios_name : "palcode-clipper"); + palcode_filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, palcode_filename); + if (palcode_filename == NULL) { + hw_error("no palcode provided\n"); + exit(1); + } + size = load_elf(palcode_filename, cpu_alpha_superpage_to_phys, + NULL, &palcode_entry, &palcode_low, &palcode_high, + 0, EM_ALPHA, 0); + if (size < 0) { + hw_error("could not load palcode '%s'\n", palcode_filename); + exit(1); + } + + /* Start all cpus at the PALcode RESET entry point. */ + for (i = 0; i < smp_cpus; ++i) { + cpus[i]->pal_mode = 1; + cpus[i]->pc = palcode_entry; + cpus[i]->palbr = palcode_entry; + } + + /* Load a kernel. */ + if (kernel_filename) { + uint64_t param_offset; + + size = load_elf(kernel_filename, cpu_alpha_superpage_to_phys, + NULL, &kernel_entry, &kernel_low, &kernel_high, + 0, EM_ALPHA, 0); + if (size < 0) { + hw_error("could not load kernel '%s'\n", kernel_filename); + exit(1); + } + + cpus[0]->trap_arg1 = kernel_entry; + + param_offset = kernel_low - 0x6000; + + if (kernel_cmdline) { + pstrcpy_targphys("cmdline", param_offset, 0x100, kernel_cmdline); + } + + if (initrd_filename) { + long initrd_base, initrd_size; + + initrd_size = get_image_size(initrd_filename); + if (initrd_size < 0) { + hw_error("could not load initial ram disk '%s'\n", + initrd_filename); + exit(1); + } + + /* Put the initrd image as high in memory as possible. */ + initrd_base = (ram_size - initrd_size) & TARGET_PAGE_MASK; + load_image_targphys(initrd_filename, initrd_base, + ram_size - initrd_base); + + stq_phys(param_offset + 0x100, initrd_base + 0xfffffc0000000000UL); + stq_phys(param_offset + 0x108, initrd_size); + } + } +} + +static QEMUMachine clipper_machine = { + .name = "clipper", + .desc = "Alpha DP264/CLIPPER", + .init = clipper_init, + .max_cpus = 4, + .is_default = 1, +}; + +static void clipper_machine_init(void) +{ + qemu_register_machine(&clipper_machine); +} + +machine_init(clipper_machine_init); diff --git a/hw/alpha_pci.c b/hw/alpha_pci.c new file mode 100644 index 0000000000..e9757028af --- /dev/null +++ b/hw/alpha_pci.c @@ -0,0 +1,134 @@ +/* + * QEMU Alpha PCI support functions. + * + * Some of this isn't very Alpha specific at all. + * + * ??? Sparse memory access not implemented. + */ + +#include "config.h" +#include "alpha_sys.h" +#include "qemu-log.h" +#include "sysemu.h" +#include "vmware_vga.h" + + +/* PCI IO reads/writes, to byte-word addressable memory. */ +/* ??? Doesn't handle multiple PCI busses. */ + +static uint64_t bw_io_read(void *opaque, target_phys_addr_t addr, unsigned size) +{ + switch (size) { + case 1: + return cpu_inb(addr); + case 2: + return cpu_inw(addr); + case 4: + return cpu_inl(addr); + } + abort(); +} + +static void bw_io_write(void *opaque, target_phys_addr_t addr, + uint64_t val, unsigned size) +{ + switch (size) { + case 1: + cpu_outb(addr, val); + break; + case 2: + cpu_outw(addr, val); + break; + case 4: + cpu_outl(addr, val); + break; + default: + abort(); + } +} + +const MemoryRegionOps alpha_pci_bw_io_ops = { + .read = bw_io_read, + .write = bw_io_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 1, + .max_access_size = 4, + }, +}; + +/* PCI config space reads/writes, to byte-word addressable memory. */ +static uint64_t bw_conf1_read(void *opaque, target_phys_addr_t addr, + unsigned size) +{ + PCIBus *b = opaque; + return pci_data_read(b, addr, size); +} + +static void bw_conf1_write(void *opaque, target_phys_addr_t addr, + uint64_t val, unsigned size) +{ + PCIBus *b = opaque; + pci_data_write(b, addr, val, size); +} + +const MemoryRegionOps alpha_pci_conf1_ops = { + .read = bw_conf1_read, + .write = bw_conf1_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl = { + .min_access_size = 1, + .max_access_size = 4, + }, +}; + +/* PCI/EISA Interrupt Acknowledge Cycle. */ + +static uint64_t iack_read(void *opaque, target_phys_addr_t addr, unsigned size) +{ + return pic_read_irq(isa_pic); +} + +static void special_write(void *opaque, target_phys_addr_t addr, + uint64_t val, unsigned size) +{ + qemu_log("pci: special write cycle"); +} + +const MemoryRegionOps alpha_pci_iack_ops = { + .read = iack_read, + .write = special_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, + .max_access_size = 4, + }, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +void alpha_pci_vga_setup(PCIBus *pci_bus) +{ + switch (vga_interface_type) { +#ifdef CONFIG_SPICE + case VGA_QXL: + pci_create_simple(pci_bus, -1, "qxl-vga"); + return; +#endif + case VGA_CIRRUS: + pci_cirrus_vga_init(pci_bus); + return; + case VGA_VMWARE: + if (pci_vmsvga_init(pci_bus)) { + return; + } + break; + } + /* If VGA is enabled at all, and one of the above didn't work, then + fallback to Standard VGA. */ + if (vga_interface_type != VGA_NONE) { + pci_vga_init(pci_bus); + } +} diff --git a/hw/alpha_sys.h b/hw/alpha_sys.h new file mode 100644 index 0000000000..13f017733b --- /dev/null +++ b/hw/alpha_sys.h @@ -0,0 +1,24 @@ +/* Alpha cores and system support chips. */ + +#ifndef HW_ALPHA_H +#define HW_ALPHA_H 1 + +#include "pci.h" +#include "pci_host.h" +#include "ide.h" +#include "net.h" +#include "pc.h" +#include "usb-ohci.h" +#include "irq.h" + + +PCIBus *typhoon_init(ram_addr_t, qemu_irq *, CPUState *[4], pci_map_irq_fn); + +/* alpha_pci.c. */ +extern const MemoryRegionOps alpha_pci_bw_io_ops; +extern const MemoryRegionOps alpha_pci_conf1_ops; +extern const MemoryRegionOps alpha_pci_iack_ops; + +void alpha_pci_vga_setup(PCIBus *pci_bus); + +#endif diff --git a/hw/alpha_typhoon.c b/hw/alpha_typhoon.c new file mode 100644 index 0000000000..c769fcc138 --- /dev/null +++ b/hw/alpha_typhoon.c @@ -0,0 +1,813 @@ +/* + * DEC 21272 (TSUNAMI/TYPHOON) chipset emulation. + * + * Written by Richard Henderson. + * + * This work is licensed under the GNU GPL license version 2 or later. + */ + +#include "cpu.h" +#include "exec-all.h" +#include "hw.h" +#include "devices.h" +#include "sysemu.h" +#include "alpha_sys.h" +#include "exec-memory.h" + + +typedef struct TyphoonCchip { + MemoryRegion region; + uint64_t misc; + uint64_t drir; + uint64_t dim[4]; + uint32_t iic[4]; + CPUState *cpu[4]; +} TyphoonCchip; + +typedef struct TyphoonWindow { + uint32_t base_addr; + uint32_t mask; + uint32_t translated_base_pfn; +} TyphoonWindow; + +typedef struct TyphoonPchip { + MemoryRegion region; + MemoryRegion reg_iack; + MemoryRegion reg_mem; + MemoryRegion reg_io; + MemoryRegion reg_conf; + uint64_t ctl; + TyphoonWindow win[4]; +} TyphoonPchip; + +typedef struct TyphoonState { + PCIHostState host; + TyphoonCchip cchip; + TyphoonPchip pchip; + MemoryRegion dchip_region; + MemoryRegion ram_region; + + /* QEMU emulation state. */ + uint32_t latch_tmp; +} TyphoonState; + +/* Called when one of DRIR or DIM changes. */ +static void cpu_irq_change(CPUState *env, uint64_t req) +{ + /* If there are any non-masked interrupts, tell the cpu. */ + if (env) { + if (req) { + cpu_interrupt(env, CPU_INTERRUPT_HARD); + } else { + cpu_reset_interrupt(env, CPU_INTERRUPT_HARD); + } + } +} + +static uint64_t cchip_read(void *opaque, target_phys_addr_t addr, unsigned size) +{ + CPUState *env = cpu_single_env; + TyphoonState *s = opaque; + uint64_t ret = 0; + + if (addr & 4) { + return s->latch_tmp; + } + + switch (addr) { + case 0x0000: + /* CSC: Cchip System Configuration Register. */ + /* All sorts of data here; probably the only thing relevant is + PIP<14> Pchip 1 Present = 0. */ + break; + + case 0x0040: + /* MTR: Memory Timing Register. */ + /* All sorts of stuff related to real DRAM. */ + break; + + case 0x0080: + /* MISC: Miscellaneous Register. */ + ret = s->cchip.misc | (env->cpu_index & 3); + break; + + case 0x00c0: + /* MPD: Memory Presence Detect Register. */ + break; + + case 0x0100: /* AAR0 */ + case 0x0140: /* AAR1 */ + case 0x0180: /* AAR2 */ + case 0x01c0: /* AAR3 */ + /* AAR: Array Address Register. */ + /* All sorts of information about DRAM. */ + break; + + case 0x0200: + /* DIM0: Device Interrupt Mask Register, CPU0. */ + ret = s->cchip.dim[0]; + break; + case 0x0240: + /* DIM1: Device Interrupt Mask Register, CPU1. */ + ret = s->cchip.dim[1]; + break; + case 0x0280: + /* DIR0: Device Interrupt Request Register, CPU0. */ + ret = s->cchip.dim[0] & s->cchip.drir; + break; + case 0x02c0: + /* DIR1: Device Interrupt Request Register, CPU1. */ + ret = s->cchip.dim[1] & s->cchip.drir; + break; + case 0x0300: + /* DRIR: Device Raw Interrupt Request Register. */ + ret = s->cchip.drir; + break; + + case 0x0340: + /* PRBEN: Probe Enable Register. */ + break; + + case 0x0380: + /* IIC0: Interval Ignore Count Register, CPU0. */ + ret = s->cchip.iic[0]; + break; + case 0x03c0: + /* IIC1: Interval Ignore Count Register, CPU1. */ + ret = s->cchip.iic[1]; + break; + + case 0x0400: /* MPR0 */ + case 0x0440: /* MPR1 */ + case 0x0480: /* MPR2 */ + case 0x04c0: /* MPR3 */ + /* MPR: Memory Programming Register. */ + break; + + case 0x0580: + /* TTR: TIGbus Timing Register. */ + /* All sorts of stuff related to interrupt delivery timings. */ + break; + case 0x05c0: + /* TDR: TIGbug Device Timing Register. */ + break; + + case 0x0600: + /* DIM2: Device Interrupt Mask Register, CPU2. */ + ret = s->cchip.dim[2]; + break; + case 0x0640: + /* DIM3: Device Interrupt Mask Register, CPU3. */ + ret = s->cchip.dim[3]; + break; + case 0x0680: + /* DIR2: Device Interrupt Request Register, CPU2. */ + ret = s->cchip.dim[2] & s->cchip.drir; + break; + case 0x06c0: + /* DIR3: Device Interrupt Request Register, CPU3. */ + ret = s->cchip.dim[3] & s->cchip.drir; + break; + + case 0x0700: + /* IIC2: Interval Ignore Count Register, CPU2. */ + ret = s->cchip.iic[2]; + break; + case 0x0740: + /* IIC3: Interval Ignore Count Register, CPU3. */ + ret = s->cchip.iic[3]; + break; + + case 0x0780: + /* PWR: Power Management Control. */ + break; + + case 0x0c00: /* CMONCTLA */ + case 0x0c40: /* CMONCTLB */ + case 0x0c80: /* CMONCNT01 */ + case 0x0cc0: /* CMONCNT23 */ + break; + + default: + cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size); + return -1; + } + + s->latch_tmp = ret >> 32; + return ret; +} + +static uint64_t dchip_read(void *opaque, target_phys_addr_t addr, unsigned size) +{ + /* Skip this. It's all related to DRAM timing and setup. */ + return 0; +} + +static uint64_t pchip_read(void *opaque, target_phys_addr_t addr, unsigned size) +{ + TyphoonState *s = opaque; + uint64_t ret = 0; + + if (addr & 4) { + return s->latch_tmp; + } + + switch (addr) { + case 0x0000: + /* WSBA0: Window Space Base Address Register. */ + ret = s->pchip.win[0].base_addr; + break; + case 0x0040: + /* WSBA1 */ + ret = s->pchip.win[1].base_addr; + break; + case 0x0080: + /* WSBA2 */ + ret = s->pchip.win[2].base_addr; + break; + case 0x00c0: + /* WSBA3 */ + ret = s->pchip.win[3].base_addr; + break; + + case 0x0100: + /* WSM0: Window Space Mask Register. */ + ret = s->pchip.win[0].mask; + break; + case 0x0140: + /* WSM1 */ + ret = s->pchip.win[1].mask; + break; + case 0x0180: + /* WSM2 */ + ret = s->pchip.win[2].mask; + break; + case 0x01c0: + /* WSM3 */ + ret = s->pchip.win[3].mask; + break; + + case 0x0200: + /* TBA0: Translated Base Address Register. */ + ret = (uint64_t)s->pchip.win[0].translated_base_pfn << 10; + break; + case 0x0240: + /* TBA1 */ + ret = (uint64_t)s->pchip.win[1].translated_base_pfn << 10; + break; + case 0x0280: + /* TBA2 */ + ret = (uint64_t)s->pchip.win[2].translated_base_pfn << 10; + break; + case 0x02c0: + /* TBA3 */ + ret = (uint64_t)s->pchip.win[3].translated_base_pfn << 10; + break; + + case 0x0300: + /* PCTL: Pchip Control Register. */ + ret = s->pchip.ctl; + break; + case 0x0340: + /* PLAT: Pchip Master Latency Register. */ + break; + case 0x03c0: + /* PERROR: Pchip Error Register. */ + break; + case 0x0400: + /* PERRMASK: Pchip Error Mask Register. */ + break; + case 0x0440: + /* PERRSET: Pchip Error Set Register. */ + break; + case 0x0480: + /* TLBIV: Translation Buffer Invalidate Virtual Register (WO). */ + break; + case 0x04c0: + /* TLBIA: Translation Buffer Invalidate All Register (WO). */ + break; + case 0x0500: /* PMONCTL */ + case 0x0540: /* PMONCNT */ + case 0x0800: /* SPRST */ + break; + + default: + cpu_unassigned_access(cpu_single_env, addr, 0, 0, 0, size); + return -1; + } + + s->latch_tmp = ret >> 32; + return ret; +} + +static void cchip_write(void *opaque, target_phys_addr_t addr, + uint64_t v32, unsigned size) +{ + TyphoonState *s = opaque; + uint64_t val, oldval, newval; + + if (addr & 4) { + val = v32 << 32 | s->latch_tmp; + addr ^= 4; + } else { + s->latch_tmp = v32; + return; + } + + switch (addr) { + case 0x0000: + /* CSC: Cchip System Configuration Register. */ + /* All sorts of data here; nothing relevant RW. */ + break; + + case 0x0040: + /* MTR: Memory Timing Register. */ + /* All sorts of stuff related to real DRAM. */ + break; + + case 0x0080: + /* MISC: Miscellaneous Register. */ + newval = oldval = s->cchip.misc; + newval &= ~(val & 0x10000ff0); /* W1C fields */ + if (val & 0x100000) { + newval &= ~0xff0000ull; /* ACL clears ABT and ABW */ + } else { + newval |= val & 0x00f00000; /* ABT field is W1S */ + if ((newval & 0xf0000) == 0) { + newval |= val & 0xf0000; /* ABW field is W1S iff zero */ + } + } + newval |= (val & 0xf000) >> 4; /* IPREQ field sets IPINTR. */ + + newval &= ~0xf0000000000ull; /* WO and RW fields */ + newval |= val & 0xf0000000000ull; + s->cchip.misc = newval; + + /* Pass on changes to IPI and ITI state. */ + if ((newval ^ oldval) & 0xff0) { + int i; + for (i = 0; i < 4; ++i) { + CPUState *env = s->cchip.cpu[i]; + if (env) { + /* IPI can be either cleared or set by the write. */ + if (newval & (1 << (i + 8))) { + cpu_interrupt(env, CPU_INTERRUPT_SMP); + } else { + cpu_reset_interrupt(env, CPU_INTERRUPT_SMP); + } + + /* ITI can only be cleared by the write. */ + if ((newval & (1 << (i + 4))) == 0) { + cpu_reset_interrupt(env, CPU_INTERRUPT_TIMER); + } + } + } + } + break; + + case 0x00c0: + /* MPD: Memory Presence Detect Register. */ + break; + + case 0x0100: /* AAR0 */ + case 0x0140: /* AAR1 */ + case 0x0180: /* AAR2 */ + case 0x01c0: /* AAR3 */ + /* AAR: Array Address Register. */ + /* All sorts of information about DRAM. */ + break; + + case 0x0200: /* DIM0 */ + /* DIM: Device Interrupt Mask Register, CPU0. */ + s->cchip.dim[0] = val; + cpu_irq_change(s->cchip.cpu[0], val & s->cchip.drir); + break; + case 0x0240: /* DIM1 */ + /* DIM: Device Interrupt Mask Register, CPU1. */ + s->cchip.dim[0] = val; + cpu_irq_change(s->cchip.cpu[1], val & s->cchip.drir); + break; + + case 0x0280: /* DIR0 (RO) */ + case 0x02c0: /* DIR1 (RO) */ + case 0x0300: /* DRIR (RO) */ + break; + + case 0x0340: + /* PRBEN: Probe Enable Register. */ + break; + + case 0x0380: /* IIC0 */ + s->cchip.iic[0] = val & 0xffffff; + break; + case 0x03c0: /* IIC1 */ + s->cchip.iic[1] = val & 0xffffff; + break; + + case 0x0400: /* MPR0 */ + case 0x0440: /* MPR1 */ + case 0x0480: /* MPR2 */ + case 0x04c0: /* MPR3 */ + /* MPR: Memory Programming Register. */ + break; + + case 0x0580: + /* TTR: TIGbus Timing Register. */ + /* All sorts of stuff related to interrupt delivery timings. */ + break; + case 0x05c0: + /* TDR: TIGbug Device Timing Register. */ + break; + + case 0x0600: + /* DIM2: Device Interrupt Mask Register, CPU2. */ + s->cchip.dim[2] = val; + cpu_irq_change(s->cchip.cpu[2], val & s->cchip.drir); + break; + case 0x0640: + /* DIM3: Device Interrupt Mask Register, CPU3. */ + s->cchip.dim[3] = val; + cpu_irq_change(s->cchip.cpu[3], val & s->cchip.drir); + break; + + case 0x0680: /* DIR2 (RO) */ + case 0x06c0: /* DIR3 (RO) */ + break; + + case 0x0700: /* IIC2 */ + s->cchip.iic[2] = val & 0xffffff; + break; + case 0x0740: /* IIC3 */ + s->cchip.iic[3] = val & 0xffffff; + break; + + case 0x0780: + /* PWR: Power Management Control. */ + break; + + case 0x0c00: /* CMONCTLA */ + case 0x0c40: /* CMONCTLB */ + case 0x0c80: /* CMONCNT01 */ + case 0x0cc0: /* CMONCNT23 */ + break; + + default: + cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size); + return; + } +} + +static void dchip_write(void *opaque, target_phys_addr_t addr, + uint64_t val, unsigned size) +{ + /* Skip this. It's all related to DRAM timing and setup. */ +} + +static void pchip_write(void *opaque, target_phys_addr_t addr, + uint64_t v32, unsigned size) +{ + TyphoonState *s = opaque; + uint64_t val, oldval; + + if (addr & 4) { + val = v32 << 32 | s->latch_tmp; + addr ^= 4; + } else { + s->latch_tmp = v32; + return; + } + + switch (addr) { + case 0x0000: + /* WSBA0: Window Space Base Address Register. */ + s->pchip.win[0].base_addr = val; + break; + case 0x0040: + /* WSBA1 */ + s->pchip.win[1].base_addr = val; + break; + case 0x0080: + /* WSBA2 */ + s->pchip.win[2].base_addr = val; + break; + case 0x00c0: + /* WSBA3 */ + s->pchip.win[3].base_addr = val; + break; + + case 0x0100: + /* WSM0: Window Space Mask Register. */ + s->pchip.win[0].mask = val; + break; + case 0x0140: + /* WSM1 */ + s->pchip.win[1].mask = val; + break; + case 0x0180: + /* WSM2 */ + s->pchip.win[2].mask = val; + break; + case 0x01c0: + /* WSM3 */ + s->pchip.win[3].mask = val; + break; + + case 0x0200: + /* TBA0: Translated Base Address Register. */ + s->pchip.win[0].translated_base_pfn = val >> 10; + break; + case 0x0240: + /* TBA1 */ + s->pchip.win[1].translated_base_pfn = val >> 10; + break; + case 0x0280: + /* TBA2 */ + s->pchip.win[2].translated_base_pfn = val >> 10; + break; + case 0x02c0: + /* TBA3 */ + s->pchip.win[3].translated_base_pfn = val >> 10; + break; + + case 0x0300: + /* PCTL: Pchip Control Register. */ + oldval = s->pchip.ctl; + oldval &= ~0x00001cff0fc7ffull; /* RW fields */ + oldval |= val & 0x00001cff0fc7ffull; + + s->pchip.ctl = oldval; + break; + + case 0x0340: + /* PLAT: Pchip Master Latency Register. */ + break; + case 0x03c0: + /* PERROR: Pchip Error Register. */ + break; + case 0x0400: + /* PERRMASK: Pchip Error Mask Register. */ + break; + case 0x0440: + /* PERRSET: Pchip Error Set Register. */ + break; + + case 0x0480: + /* TLBIV: Translation Buffer Invalidate Virtual Register. */ + break; + + case 0x04c0: + /* TLBIA: Translation Buffer Invalidate All Register (WO). */ + break; + + case 0x0500: + /* PMONCTL */ + case 0x0540: + /* PMONCNT */ + case 0x0800: + /* SPRST */ + break; + + default: + cpu_unassigned_access(cpu_single_env, addr, 1, 0, 0, size); + return; + } +} + +static const MemoryRegionOps cchip_ops = { + .read = cchip_read, + .write = cchip_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, /* ??? Should be 8. */ + .max_access_size = 8, + }, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static const MemoryRegionOps dchip_ops = { + .read = dchip_read, + .write = dchip_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, /* ??? Should be 8. */ + .max_access_size = 8, + }, + .impl = { + .min_access_size = 4, + .max_access_size = 8, + }, +}; + +static const MemoryRegionOps pchip_ops = { + .read = pchip_read, + .write = pchip_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 4, /* ??? Should be 8. */ + .max_access_size = 8, + }, + .impl = { + .min_access_size = 4, + .max_access_size = 4, + }, +}; + +static void typhoon_set_irq(void *opaque, int irq, int level) +{ + TyphoonState *s = opaque; + uint64_t drir; + int i; + + /* Set/Reset the bit in CCHIP.DRIR based on IRQ+LEVEL. */ + drir = s->cchip.drir; + if (level) { + drir |= 1ull << irq; + } else { + drir &= ~(1ull << irq); + } + s->cchip.drir = drir; + + for (i = 0; i < 4; ++i) { + cpu_irq_change(s->cchip.cpu[i], s->cchip.dim[i] & drir); + } +} + +static void typhoon_set_isa_irq(void *opaque, int irq, int level) +{ + typhoon_set_irq(opaque, 55, level); +} + +static void typhoon_set_timer_irq(void *opaque, int irq, int level) +{ + TyphoonState *s = opaque; + int i; + + /* Thankfully, the mc146818rtc code doesn't track the IRQ state, + and so we don't have to worry about missing interrupts just + because we never actually ACK the interrupt. Just ignore any + case of the interrupt level going low. */ + if (level == 0) { + return; + } + + /* Deliver the interrupt to each CPU, considering each CPU's IIC. */ + for (i = 0; i < 4; ++i) { + CPUState *env = s->cchip.cpu[i]; + if (env) { + uint32_t iic = s->cchip.iic[i]; + + /* ??? The verbage in Section 10.2.2.10 isn't 100% clear. + Bit 24 is the OverFlow bit, RO, and set when the count + decrements past 0. When is OF cleared? My guess is that + OF is actually cleared when the IIC is written, and that + the ICNT field always decrements. At least, that's an + interpretation that makes sense, and "allows the CPU to + determine exactly how mant interval timer ticks were + skipped". At least within the next 4M ticks... */ + + iic = ((iic - 1) & 0x1ffffff) | (iic & 0x1000000); + s->cchip.iic[i] = iic; + + if (iic & 0x1000000) { + /* Set the ITI bit for this cpu. */ + s->cchip.misc |= 1 << (i + 4); + /* And signal the interrupt. */ + cpu_interrupt(env, CPU_INTERRUPT_TIMER); + } + } + } +} + +static void typhoon_alarm_timer(void *opaque) +{ + TyphoonState *s = (TyphoonState *)((uintptr_t)opaque & ~3); + int cpu = (uintptr_t)opaque & 3; + + /* Set the ITI bit for this cpu. */ + s->cchip.misc |= 1 << (cpu + 4); + cpu_interrupt(s->cchip.cpu[cpu], CPU_INTERRUPT_TIMER); +} + +PCIBus *typhoon_init(ram_addr_t ram_size, qemu_irq *p_rtc_irq, + CPUState *cpus[4], pci_map_irq_fn sys_map_irq) +{ + const uint64_t MB = 1024 * 1024; + const uint64_t GB = 1024 * MB; + MemoryRegion *addr_space = get_system_memory(); + MemoryRegion *addr_space_io = get_system_io(); + DeviceState *dev; + PCIHostState *p; + TyphoonState *s; + PCIBus *b; + int i; + + dev = qdev_create(NULL, "typhoon-pcihost"); + qdev_init_nofail(dev); + + p = FROM_SYSBUS(PCIHostState, sysbus_from_qdev(dev)); + s = container_of(p, TyphoonState, host); + + /* Remember the CPUs so that we can deliver interrupts to them. */ + for (i = 0; i < 4; i++) { + CPUState *env = cpus[i]; + s->cchip.cpu[i] = env; + if (env) { + env->alarm_timer = qemu_new_timer_ns(rtc_clock, + typhoon_alarm_timer, + (void *)((uintptr_t)s + i)); + } + } + + *p_rtc_irq = *qemu_allocate_irqs(typhoon_set_timer_irq, s, 1); + + /* Main memory region, 0x00.0000.0000. Real hardware supports 32GB, + but the address space hole reserved at this point is 8TB. */ + memory_region_init_ram(&s->ram_region, NULL, "ram", ram_size); + memory_region_add_subregion(addr_space, 0, &s->ram_region); + + /* TIGbus, 0x801.0000.0000, 1GB. */ + /* ??? The TIGbus is used for delivering interrupts, and access to + the flash ROM. I'm not sure that we need to implement it at all. */ + + /* Pchip0 CSRs, 0x801.8000.0000, 256MB. */ + memory_region_init_io(&s->pchip.region, &pchip_ops, s, "pchip0", 256*MB); + memory_region_add_subregion(addr_space, 0x80180000000, &s->pchip.region); + + /* Cchip CSRs, 0x801.A000.0000, 256MB. */ + memory_region_init_io(&s->cchip.region, &cchip_ops, s, "cchip0", 256*MB); + memory_region_add_subregion(addr_space, 0x801a0000000, &s->cchip.region); + + /* Dchip CSRs, 0x801.B000.0000, 256MB. */ + memory_region_init_io(&s->dchip_region, &dchip_ops, s, "dchip0", 256*MB); + memory_region_add_subregion(addr_space, 0x801b0000000, &s->dchip_region); + + /* Pchip0 PCI memory, 0x800.0000.0000, 4GB. */ + memory_region_init(&s->pchip.reg_mem, "pci0-mem", 4*GB); + memory_region_add_subregion(addr_space, 0x80000000000, &s->pchip.reg_mem); + + /* Pchip0 PCI I/O, 0x801.FC00.0000, 32MB. */ + /* ??? Ideally we drop the "system" i/o space on the floor and give the + PCI subsystem the full address space reserved by the chipset. + We can't do that until the MEM and IO paths in memory.c are unified. */ + memory_region_init_io(&s->pchip.reg_io, &alpha_pci_bw_io_ops, NULL, + "pci0-io", 32*MB); + memory_region_add_subregion(addr_space, 0x801fc000000, &s->pchip.reg_io); + + b = pci_register_bus(&s->host.busdev.qdev, "pci", + typhoon_set_irq, sys_map_irq, s, + &s->pchip.reg_mem, addr_space_io, 0, 64); + s->host.bus = b; + + /* Pchip0 PCI special/interrupt acknowledge, 0x801.F800.0000, 64MB. */ + memory_region_init_io(&s->pchip.reg_iack, &alpha_pci_iack_ops, b, + "pci0-iack", 64*MB); + memory_region_add_subregion(addr_space, 0x801f8000000, &s->pchip.reg_iack); + + /* Pchip0 PCI configuration, 0x801.FE00.0000, 16MB. */ + memory_region_init_io(&s->pchip.reg_conf, &alpha_pci_conf1_ops, b, + "pci0-conf", 16*MB); + memory_region_add_subregion(addr_space, 0x801fe000000, &s->pchip.reg_conf); + + /* For the record, these are the mappings for the second PCI bus. + We can get away with not implementing them because we indicate + via the Cchip.CSC<PIP> bit that Pchip1 is not present. */ + /* Pchip1 PCI memory, 0x802.0000.0000, 4GB. */ + /* Pchip1 CSRs, 0x802.8000.0000, 256MB. */ + /* Pchip1 PCI special/interrupt acknowledge, 0x802.F800.0000, 64MB. */ + /* Pchip1 PCI I/O, 0x802.FC00.0000, 32MB. */ + /* Pchip1 PCI configuration, 0x802.FE00.0000, 16MB. */ + + /* Init the ISA bus. */ + /* ??? Technically there should be a cy82c693ub pci-isa bridge. */ + { + qemu_irq isa_pci_irq, *isa_irqs; + + isa_bus_new(NULL, addr_space_io); + isa_pci_irq = *qemu_allocate_irqs(typhoon_set_isa_irq, s, 1); + isa_irqs = i8259_init(isa_pci_irq); + isa_bus_irqs(isa_irqs); + } + + return b; +} + +static int typhoon_pcihost_init(SysBusDevice *dev) +{ + return 0; +} + +static SysBusDeviceInfo typhoon_pcihost_info = { + .init = typhoon_pcihost_init, + .qdev.name = "typhoon-pcihost", + .qdev.size = sizeof(TyphoonState), + .qdev.no_user = 1 +}; + +static void typhoon_register(void) +{ + sysbus_register_withprop(&typhoon_pcihost_info); +} +device_init(typhoon_register); |