diff options
Diffstat (limited to 'hw/riscv')
| -rw-r--r-- | hw/riscv/sifive_clint.c | 8 | ||||
| -rw-r--r-- | hw/riscv/sifive_e.c | 5 | ||||
| -rw-r--r-- | hw/riscv/sifive_plic.c | 2 | ||||
| -rw-r--r-- | hw/riscv/sifive_u.c | 25 | ||||
| -rw-r--r-- | hw/riscv/sifive_uart.c | 24 | ||||
| -rw-r--r-- | hw/riscv/virt.c | 147 |
6 files changed, 185 insertions, 26 deletions
diff --git a/hw/riscv/sifive_clint.c b/hw/riscv/sifive_clint.c index 0d2fd52487..d4c159e937 100644 --- a/hw/riscv/sifive_clint.c +++ b/hw/riscv/sifive_clint.c @@ -146,15 +146,15 @@ static void sifive_clint_write(void *opaque, hwaddr addr, uint64_t value, error_report("clint: invalid timecmp hartid: %zu", hartid); } else if ((addr & 0x7) == 0) { /* timecmp_lo */ - uint64_t timecmp = env->timecmp; + uint64_t timecmp_hi = env->timecmp >> 32; sifive_clint_write_timecmp(RISCV_CPU(cpu), - timecmp << 32 | (value & 0xFFFFFFFF)); + timecmp_hi << 32 | (value & 0xFFFFFFFF)); return; } else if ((addr & 0x7) == 4) { /* timecmp_hi */ - uint64_t timecmp = env->timecmp; + uint64_t timecmp_lo = env->timecmp; sifive_clint_write_timecmp(RISCV_CPU(cpu), - value << 32 | (timecmp & 0xFFFFFFFF)); + value << 32 | (timecmp_lo & 0xFFFFFFFF)); } else { error_report("clint: invalid timecmp write: %08x", (uint32_t)addr); } diff --git a/hw/riscv/sifive_e.c b/hw/riscv/sifive_e.c index cb513cc3bb..5d9d65ff29 100644 --- a/hw/riscv/sifive_e.c +++ b/hw/riscv/sifive_e.c @@ -192,9 +192,8 @@ static void riscv_sifive_e_soc_realize(DeviceState *dev, Error **errp) memmap[SIFIVE_E_QSPI0].base, memmap[SIFIVE_E_QSPI0].size); sifive_mmio_emulate(sys_mem, "riscv.sifive.e.pwm0", memmap[SIFIVE_E_PWM0].base, memmap[SIFIVE_E_PWM0].size); - /* sifive_uart_create(sys_mem, memmap[SIFIVE_E_UART1].base, - serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), - SIFIVE_E_UART1_IRQ)); */ + sifive_uart_create(sys_mem, memmap[SIFIVE_E_UART1].base, + serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_E_UART1_IRQ)); sifive_mmio_emulate(sys_mem, "riscv.sifive.e.qspi1", memmap[SIFIVE_E_QSPI1].base, memmap[SIFIVE_E_QSPI1].size); sifive_mmio_emulate(sys_mem, "riscv.sifive.e.pwm1", diff --git a/hw/riscv/sifive_plic.c b/hw/riscv/sifive_plic.c index 9cf9a1f986..d12ec3fc9a 100644 --- a/hw/riscv/sifive_plic.c +++ b/hw/riscv/sifive_plic.c @@ -214,7 +214,7 @@ static uint64_t sifive_plic_read(void *opaque, hwaddr addr, unsigned size) } else if (addr >= plic->pending_base && /* 1 bit per source */ addr < plic->pending_base + (plic->num_sources >> 3)) { - uint32_t word = (addr - plic->priority_base) >> 2; + uint32_t word = (addr - plic->pending_base) >> 2; if (RISCV_DEBUG_PLIC) { qemu_log("plic: read pending: word=%d value=%d\n", word, plic->pending[word]); diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c index ef07df2442..3bd3b67507 100644 --- a/hw/riscv/sifive_u.c +++ b/hw/riscv/sifive_u.c @@ -85,7 +85,8 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, int cpu; uint32_t *cells; char *nodename; - uint32_t plic_phandle; + char ethclk_names[] = "pclk\0hclk\0tx_clk"; + uint32_t plic_phandle, ethclk_phandle; fdt = s->fdt = create_device_tree(&s->fdt_size); if (!fdt) { @@ -197,6 +198,17 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, g_free(cells); g_free(nodename); + nodename = g_strdup_printf("/soc/ethclk"); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_string(fdt, nodename, "compatible", "fixed-clock"); + qemu_fdt_setprop_cell(fdt, nodename, "#clock-cells", 0x0); + qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", + SIFIVE_U_GEM_CLOCK_FREQ); + qemu_fdt_setprop_cell(fdt, nodename, "phandle", 3); + qemu_fdt_setprop_cell(fdt, nodename, "linux,phandle", 3); + ethclk_phandle = qemu_fdt_get_phandle(fdt, nodename); + g_free(nodename); + nodename = g_strdup_printf("/soc/ethernet@%lx", (long)memmap[SIFIVE_U_GEM].base); qemu_fdt_add_subnode(fdt, nodename); @@ -208,6 +220,10 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, qemu_fdt_setprop_string(fdt, nodename, "phy-mode", "gmii"); qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle); qemu_fdt_setprop_cells(fdt, nodename, "interrupts", SIFIVE_U_GEM_IRQ); + qemu_fdt_setprop_cells(fdt, nodename, "clocks", + ethclk_phandle, ethclk_phandle, ethclk_phandle); + qemu_fdt_setprop(fdt, nodename, "clocks-names", ethclk_names, + sizeof(ethclk_names)); qemu_fdt_setprop_cells(fdt, nodename, "#address-cells", 1); qemu_fdt_setprop_cells(fdt, nodename, "#size-cells", 0); g_free(nodename); @@ -225,6 +241,8 @@ static void create_fdt(SiFiveUState *s, const struct MemmapEntry *memmap, qemu_fdt_setprop_cells(fdt, nodename, "reg", 0x0, memmap[SIFIVE_U_UART0].base, 0x0, memmap[SIFIVE_U_UART0].size); + qemu_fdt_setprop_cell(fdt, nodename, "clock-frequency", + SIFIVE_U_CLOCK_FREQ / 2); qemu_fdt_setprop_cells(fdt, nodename, "interrupt-parent", plic_phandle); qemu_fdt_setprop_cells(fdt, nodename, "interrupts", 1); @@ -350,9 +368,8 @@ static void riscv_sifive_u_soc_realize(DeviceState *dev, Error **errp) memmap[SIFIVE_U_PLIC].size); sifive_uart_create(system_memory, memmap[SIFIVE_U_UART0].base, serial_hd(0), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART0_IRQ)); - /* sifive_uart_create(system_memory, memmap[SIFIVE_U_UART1].base, - serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), - SIFIVE_U_UART1_IRQ)); */ + sifive_uart_create(system_memory, memmap[SIFIVE_U_UART1].base, + serial_hd(1), qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_UART1_IRQ)); sifive_clint_create(memmap[SIFIVE_U_CLINT].base, memmap[SIFIVE_U_CLINT].size, smp_cpus, SIFIVE_SIP_BASE, SIFIVE_TIMECMP_BASE, SIFIVE_TIME_BASE); diff --git a/hw/riscv/sifive_uart.c b/hw/riscv/sifive_uart.c index b0c3798cf2..456a3d3697 100644 --- a/hw/riscv/sifive_uart.c +++ b/hw/riscv/sifive_uart.c @@ -28,12 +28,26 @@ * Not yet implemented: * * Transmit FIFO using "qemu/fifo8.h" - * SIFIVE_UART_IE_TXWM interrupts - * SIFIVE_UART_IE_RXWM interrupts must honor fifo watermark - * Rx FIFO watermark interrupt trigger threshold - * Tx FIFO watermark interrupt trigger threshold. */ +/* Returns the state of the IP (interrupt pending) register */ +static uint64_t uart_ip(SiFiveUARTState *s) +{ + uint64_t ret = 0; + + uint64_t txcnt = SIFIVE_UART_GET_TXCNT(s->txctrl); + uint64_t rxcnt = SIFIVE_UART_GET_RXCNT(s->rxctrl); + + if (txcnt != 0) { + ret |= SIFIVE_UART_IP_TXWM; + } + if (s->rx_fifo_len > rxcnt) { + ret |= SIFIVE_UART_IP_RXWM; + } + + return ret; +} + static void update_irq(SiFiveUARTState *s) { int cond = 0; @@ -69,7 +83,7 @@ uart_read(void *opaque, hwaddr addr, unsigned int size) case SIFIVE_UART_IE: return s->ie; case SIFIVE_UART_IP: - return s->rx_fifo_len ? SIFIVE_UART_IP_RXWM : 0; + return uart_ip(s); case SIFIVE_UART_TXCTRL: return s->txctrl; case SIFIVE_UART_RXCTRL: diff --git a/hw/riscv/virt.c b/hw/riscv/virt.c index 2b38f89070..e7f0716fb6 100644 --- a/hw/riscv/virt.c +++ b/hw/riscv/virt.c @@ -39,6 +39,8 @@ #include "sysemu/arch_init.h" #include "sysemu/device_tree.h" #include "exec/address-spaces.h" +#include "hw/pci/pci.h" +#include "hw/pci-host/gpex.h" #include "elf.h" #include <libfdt.h> @@ -47,14 +49,17 @@ static const struct MemmapEntry { hwaddr base; hwaddr size; } virt_memmap[] = { - [VIRT_DEBUG] = { 0x0, 0x100 }, - [VIRT_MROM] = { 0x1000, 0x11000 }, - [VIRT_TEST] = { 0x100000, 0x1000 }, - [VIRT_CLINT] = { 0x2000000, 0x10000 }, - [VIRT_PLIC] = { 0xc000000, 0x4000000 }, - [VIRT_UART0] = { 0x10000000, 0x100 }, - [VIRT_VIRTIO] = { 0x10001000, 0x1000 }, - [VIRT_DRAM] = { 0x80000000, 0x0 }, + [VIRT_DEBUG] = { 0x0, 0x100 }, + [VIRT_MROM] = { 0x1000, 0x11000 }, + [VIRT_TEST] = { 0x100000, 0x1000 }, + [VIRT_CLINT] = { 0x2000000, 0x10000 }, + [VIRT_PLIC] = { 0xc000000, 0x4000000 }, + [VIRT_UART0] = { 0x10000000, 0x100 }, + [VIRT_VIRTIO] = { 0x10001000, 0x1000 }, + [VIRT_DRAM] = { 0x80000000, 0x0 }, + [VIRT_PCIE_MMIO] = { 0x40000000, 0x40000000 }, + [VIRT_PCIE_PIO] = { 0x03000000, 0x00010000 }, + [VIRT_PCIE_ECAM] = { 0x30000000, 0x10000000 }, }; static uint64_t load_kernel(const char *kernel_filename) @@ -98,6 +103,51 @@ static hwaddr load_initrd(const char *filename, uint64_t mem_size, return *start + size; } +static void create_pcie_irq_map(void *fdt, char *nodename, + uint32_t plic_phandle) +{ + int pin, dev; + uint32_t + full_irq_map[GPEX_NUM_IRQS * GPEX_NUM_IRQS * FDT_INT_MAP_WIDTH] = {}; + uint32_t *irq_map = full_irq_map; + + /* This code creates a standard swizzle of interrupts such that + * each device's first interrupt is based on it's PCI_SLOT number. + * (See pci_swizzle_map_irq_fn()) + * + * We only need one entry per interrupt in the table (not one per + * possible slot) seeing the interrupt-map-mask will allow the table + * to wrap to any number of devices. + */ + for (dev = 0; dev < GPEX_NUM_IRQS; dev++) { + int devfn = dev * 0x8; + + for (pin = 0; pin < GPEX_NUM_IRQS; pin++) { + int irq_nr = PCIE_IRQ + ((pin + PCI_SLOT(devfn)) % GPEX_NUM_IRQS); + int i = 0; + + irq_map[i] = cpu_to_be32(devfn << 8); + + i += FDT_PCI_ADDR_CELLS; + irq_map[i] = cpu_to_be32(pin + 1); + + i += FDT_PCI_INT_CELLS; + irq_map[i++] = cpu_to_be32(plic_phandle); + + i += FDT_PLIC_ADDR_CELLS; + irq_map[i] = cpu_to_be32(irq_nr); + + irq_map += FDT_INT_MAP_WIDTH; + } + } + + qemu_fdt_setprop(fdt, nodename, "interrupt-map", + full_irq_map, sizeof(full_irq_map)); + + qemu_fdt_setprop_cells(fdt, nodename, "interrupt-map-mask", + 0x1800, 0, 0, 0x7); +} + static void *create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap, uint64_t mem_size, const char *cmdline) { @@ -203,7 +253,10 @@ static void *create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap, nodename = g_strdup_printf("/soc/interrupt-controller@%lx", (long)memmap[VIRT_PLIC].base); qemu_fdt_add_subnode(fdt, nodename); - qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", 1); + qemu_fdt_setprop_cells(fdt, nodename, "#address-cells", + FDT_PLIC_ADDR_CELLS); + qemu_fdt_setprop_cell(fdt, nodename, "#interrupt-cells", + FDT_PLIC_INT_CELLS); qemu_fdt_setprop_string(fdt, nodename, "compatible", "riscv,plic0"); qemu_fdt_setprop(fdt, nodename, "interrupt-controller", NULL, 0); qemu_fdt_setprop(fdt, nodename, "interrupts-extended", @@ -233,6 +286,33 @@ static void *create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap, g_free(nodename); } + nodename = g_strdup_printf("/soc/pci@%lx", + (long) memmap[VIRT_PCIE_ECAM].base); + qemu_fdt_add_subnode(fdt, nodename); + qemu_fdt_setprop_cells(fdt, nodename, "#address-cells", + FDT_PCI_ADDR_CELLS); + qemu_fdt_setprop_cells(fdt, nodename, "#interrupt-cells", + FDT_PCI_INT_CELLS); + qemu_fdt_setprop_cells(fdt, nodename, "#size-cells", 0x2); + qemu_fdt_setprop_string(fdt, nodename, "compatible", + "pci-host-ecam-generic"); + qemu_fdt_setprop_string(fdt, nodename, "device_type", "pci"); + qemu_fdt_setprop_cell(fdt, nodename, "linux,pci-domain", 0); + qemu_fdt_setprop_cells(fdt, nodename, "bus-range", 0, + memmap[VIRT_PCIE_ECAM].base / + PCIE_MMCFG_SIZE_MIN - 1); + qemu_fdt_setprop(fdt, nodename, "dma-coherent", NULL, 0); + qemu_fdt_setprop_cells(fdt, nodename, "reg", 0, memmap[VIRT_PCIE_ECAM].base, + 0, memmap[VIRT_PCIE_ECAM].size); + qemu_fdt_setprop_sized_cells(fdt, nodename, "ranges", + 1, FDT_PCI_RANGE_IOPORT, 2, 0, + 2, memmap[VIRT_PCIE_PIO].base, 2, memmap[VIRT_PCIE_PIO].size, + 1, FDT_PCI_RANGE_MMIO, + 2, memmap[VIRT_PCIE_MMIO].base, + 2, memmap[VIRT_PCIE_MMIO].base, 2, memmap[VIRT_PCIE_MMIO].size); + create_pcie_irq_map(fdt, nodename, plic_phandle); + g_free(nodename); + nodename = g_strdup_printf("/test@%lx", (long)memmap[VIRT_TEST].base); qemu_fdt_add_subnode(fdt, nodename); @@ -263,6 +343,47 @@ static void *create_fdt(RISCVVirtState *s, const struct MemmapEntry *memmap, return fdt; } + +static inline DeviceState *gpex_pcie_init(MemoryRegion *sys_mem, + hwaddr ecam_base, hwaddr ecam_size, + hwaddr mmio_base, hwaddr mmio_size, + hwaddr pio_base, + DeviceState *plic, bool link_up) +{ + DeviceState *dev; + MemoryRegion *ecam_alias, *ecam_reg; + MemoryRegion *mmio_alias, *mmio_reg; + qemu_irq irq; + int i; + + dev = qdev_create(NULL, TYPE_GPEX_HOST); + + qdev_init_nofail(dev); + + ecam_alias = g_new0(MemoryRegion, 1); + ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0); + memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam", + ecam_reg, 0, ecam_size); + memory_region_add_subregion(get_system_memory(), ecam_base, ecam_alias); + + mmio_alias = g_new0(MemoryRegion, 1); + mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1); + memory_region_init_alias(mmio_alias, OBJECT(dev), "pcie-mmio", + mmio_reg, mmio_base, mmio_size); + memory_region_add_subregion(get_system_memory(), mmio_base, mmio_alias); + + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, pio_base); + + for (i = 0; i < GPEX_NUM_IRQS; i++) { + irq = qdev_get_gpio_in(plic, PCIE_IRQ + i); + + sysbus_connect_irq(SYS_BUS_DEVICE(dev), i, irq); + gpex_set_irq_num(GPEX_HOST(dev), i, PCIE_IRQ + i); + } + + return dev; +} + static void riscv_virt_board_init(MachineState *machine) { const struct MemmapEntry *memmap = virt_memmap; @@ -385,6 +506,14 @@ static void riscv_virt_board_init(MachineState *machine) qdev_get_gpio_in(DEVICE(s->plic), VIRTIO_IRQ + i)); } + gpex_pcie_init(system_memory, + memmap[VIRT_PCIE_ECAM].base, + memmap[VIRT_PCIE_ECAM].size, + memmap[VIRT_PCIE_MMIO].base, + memmap[VIRT_PCIE_MMIO].size, + memmap[VIRT_PCIE_PIO].base, + DEVICE(s->plic), true); + serial_mm_init(system_memory, memmap[VIRT_UART0].base, 0, qdev_get_gpio_in(DEVICE(s->plic), UART0_IRQ), 399193, serial_hd(0), DEVICE_LITTLE_ENDIAN); |