diff options
author | Peter Maydell <peter.maydell@linaro.org> | 2020-09-13 20:29:35 +0100 |
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committer | Peter Maydell <peter.maydell@linaro.org> | 2020-09-13 20:29:35 +0100 |
commit | f00f57f344236bbbe4c20845a0276a490dd5ffea (patch) | |
tree | 0b1090f44ac0480dc6e39436e59872615debb74a /hw/gpio | |
parent | 3d9f371b01067d9cec4d592920013012119397c8 (diff) | |
parent | 7595a65818ea9b49c36650a8c217a1ef9bd6e62a (diff) | |
download | qemu-f00f57f344236bbbe4c20845a0276a490dd5ffea.zip qemu-f00f57f344236bbbe4c20845a0276a490dd5ffea.tar.gz qemu-f00f57f344236bbbe4c20845a0276a490dd5ffea.tar.bz2 |
Merge remote-tracking branch 'remotes/alistair/tags/pull-riscv-to-apply-20200910' into staging
This PR includes multiple fixes and features for RISC-V:
- Fixes a bug in printing trap causes
- Allows 16-bit writes to the SiFive test device. This fixes the
failure to reboot the RISC-V virt machine
- Support for the Microchip PolarFire SoC and Icicle Kit
- A reafactor of RISC-V code out of hw/riscv
# gpg: Signature made Thu 10 Sep 2020 19:08:06 BST
# gpg: using RSA key F6C4AC46D4934868D3B8CE8F21E10D29DF977054
# gpg: Good signature from "Alistair Francis <alistair@alistair23.me>" [full]
# Primary key fingerprint: F6C4 AC46 D493 4868 D3B8 CE8F 21E1 0D29 DF97 7054
* remotes/alistair/tags/pull-riscv-to-apply-20200910: (30 commits)
hw/riscv: Sort the Kconfig options in alphabetical order
hw/riscv: Drop CONFIG_SIFIVE
hw/riscv: Always build riscv_hart.c
hw/riscv: Move sifive_test model to hw/misc
hw/riscv: Move sifive_uart model to hw/char
hw/riscv: Move riscv_htif model to hw/char
hw/riscv: Move sifive_plic model to hw/intc
hw/riscv: Move sifive_clint model to hw/intc
hw/riscv: Move sifive_gpio model to hw/gpio
hw/riscv: Move sifive_u_otp model to hw/misc
hw/riscv: Move sifive_u_prci model to hw/misc
hw/riscv: Move sifive_e_prci model to hw/misc
hw/riscv: sifive_u: Connect a DMA controller
hw/riscv: clint: Avoid using hard-coded timebase frequency
hw/riscv: microchip_pfsoc: Hook GPIO controllers
hw/riscv: microchip_pfsoc: Connect 2 Cadence GEMs
hw/arm: xlnx: Set all boards' GEM 'phy-addr' property value to 23
hw/net: cadence_gem: Add a new 'phy-addr' property
hw/riscv: microchip_pfsoc: Connect a DMA controller
hw/dma: Add SiFive platform DMA controller emulation
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# Conflicts:
# hw/riscv/trace-events
Diffstat (limited to 'hw/gpio')
-rw-r--r-- | hw/gpio/Kconfig | 3 | ||||
-rw-r--r-- | hw/gpio/meson.build | 1 | ||||
-rw-r--r-- | hw/gpio/sifive_gpio.c | 397 | ||||
-rw-r--r-- | hw/gpio/trace-events | 6 |
4 files changed, 407 insertions, 0 deletions
diff --git a/hw/gpio/Kconfig b/hw/gpio/Kconfig index 9227cb5..b6fdaa2 100644 --- a/hw/gpio/Kconfig +++ b/hw/gpio/Kconfig @@ -7,3 +7,6 @@ config PL061 config GPIO_KEY bool + +config SIFIVE_GPIO + bool diff --git a/hw/gpio/meson.build b/hw/gpio/meson.build index 6bcdfa6..86cae9a 100644 --- a/hw/gpio/meson.build +++ b/hw/gpio/meson.build @@ -10,3 +10,4 @@ softmmu_ss.add(when: 'CONFIG_NRF51_SOC', if_true: files('nrf51_gpio.c')) softmmu_ss.add(when: 'CONFIG_OMAP', if_true: files('omap_gpio.c')) softmmu_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_gpio.c')) softmmu_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files('aspeed_gpio.c')) +softmmu_ss.add(when: 'CONFIG_SIFIVE_GPIO', if_true: files('sifive_gpio.c')) diff --git a/hw/gpio/sifive_gpio.c b/hw/gpio/sifive_gpio.c new file mode 100644 index 0000000..78bf29e --- /dev/null +++ b/hw/gpio/sifive_gpio.c @@ -0,0 +1,397 @@ +/* + * SiFive System-on-Chip general purpose input/output register definition + * + * Copyright 2019 AdaCore + * + * Base on nrf51_gpio.c: + * + * Copyright 2018 Steffen Görtz <contrib@steffen-goertz.de> + * + * This code is licensed under the GPL version 2 or later. See + * the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include "qemu/log.h" +#include "hw/irq.h" +#include "hw/qdev-properties.h" +#include "hw/gpio/sifive_gpio.h" +#include "migration/vmstate.h" +#include "trace.h" + +static void update_output_irq(SIFIVEGPIOState *s) +{ + uint32_t pending; + uint32_t pin; + + pending = s->high_ip & s->high_ie; + pending |= s->low_ip & s->low_ie; + pending |= s->rise_ip & s->rise_ie; + pending |= s->fall_ip & s->fall_ie; + + for (int i = 0; i < s->ngpio; i++) { + pin = 1 << i; + qemu_set_irq(s->irq[i], (pending & pin) != 0); + trace_sifive_gpio_update_output_irq(i, (pending & pin) != 0); + } +} + +static void update_state(SIFIVEGPIOState *s) +{ + size_t i; + bool prev_ival, in, in_mask, port, out_xor, pull, output_en, input_en, + rise_ip, fall_ip, low_ip, high_ip, oval, actual_value, ival; + + for (i = 0; i < s->ngpio; i++) { + + prev_ival = extract32(s->value, i, 1); + in = extract32(s->in, i, 1); + in_mask = extract32(s->in_mask, i, 1); + port = extract32(s->port, i, 1); + out_xor = extract32(s->out_xor, i, 1); + pull = extract32(s->pue, i, 1); + output_en = extract32(s->output_en, i, 1); + input_en = extract32(s->input_en, i, 1); + rise_ip = extract32(s->rise_ip, i, 1); + fall_ip = extract32(s->fall_ip, i, 1); + low_ip = extract32(s->low_ip, i, 1); + high_ip = extract32(s->high_ip, i, 1); + + /* Output value (IOF not supported) */ + oval = output_en && (port ^ out_xor); + + /* Pin both driven externally and internally */ + if (output_en && in_mask) { + qemu_log_mask(LOG_GUEST_ERROR, "GPIO pin %zu short circuited\n", i); + } + + if (in_mask) { + /* The pin is driven by external device */ + actual_value = in; + } else if (output_en) { + /* The pin is driven by internal circuit */ + actual_value = oval; + } else { + /* Floating? Apply pull-up resistor */ + actual_value = pull; + } + + if (output_en) { + qemu_set_irq(s->output[i], actual_value); + } + + /* Input value */ + ival = input_en && actual_value; + + /* Interrupts */ + high_ip = high_ip || ival; + s->high_ip = deposit32(s->high_ip, i, 1, high_ip); + + low_ip = low_ip || !ival; + s->low_ip = deposit32(s->low_ip, i, 1, low_ip); + + rise_ip = rise_ip || (ival && !prev_ival); + s->rise_ip = deposit32(s->rise_ip, i, 1, rise_ip); + + fall_ip = fall_ip || (!ival && prev_ival); + s->fall_ip = deposit32(s->fall_ip, i, 1, fall_ip); + + /* Update value */ + s->value = deposit32(s->value, i, 1, ival); + } + update_output_irq(s); +} + +static uint64_t sifive_gpio_read(void *opaque, hwaddr offset, unsigned int size) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(opaque); + uint64_t r = 0; + + switch (offset) { + case SIFIVE_GPIO_REG_VALUE: + r = s->value; + break; + + case SIFIVE_GPIO_REG_INPUT_EN: + r = s->input_en; + break; + + case SIFIVE_GPIO_REG_OUTPUT_EN: + r = s->output_en; + break; + + case SIFIVE_GPIO_REG_PORT: + r = s->port; + break; + + case SIFIVE_GPIO_REG_PUE: + r = s->pue; + break; + + case SIFIVE_GPIO_REG_DS: + r = s->ds; + break; + + case SIFIVE_GPIO_REG_RISE_IE: + r = s->rise_ie; + break; + + case SIFIVE_GPIO_REG_RISE_IP: + r = s->rise_ip; + break; + + case SIFIVE_GPIO_REG_FALL_IE: + r = s->fall_ie; + break; + + case SIFIVE_GPIO_REG_FALL_IP: + r = s->fall_ip; + break; + + case SIFIVE_GPIO_REG_HIGH_IE: + r = s->high_ie; + break; + + case SIFIVE_GPIO_REG_HIGH_IP: + r = s->high_ip; + break; + + case SIFIVE_GPIO_REG_LOW_IE: + r = s->low_ie; + break; + + case SIFIVE_GPIO_REG_LOW_IP: + r = s->low_ip; + break; + + case SIFIVE_GPIO_REG_IOF_EN: + r = s->iof_en; + break; + + case SIFIVE_GPIO_REG_IOF_SEL: + r = s->iof_sel; + break; + + case SIFIVE_GPIO_REG_OUT_XOR: + r = s->out_xor; + break; + + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: bad read offset 0x%" HWADDR_PRIx "\n", + __func__, offset); + } + + trace_sifive_gpio_read(offset, r); + + return r; +} + +static void sifive_gpio_write(void *opaque, hwaddr offset, + uint64_t value, unsigned int size) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(opaque); + + trace_sifive_gpio_write(offset, value); + + switch (offset) { + + case SIFIVE_GPIO_REG_INPUT_EN: + s->input_en = value; + break; + + case SIFIVE_GPIO_REG_OUTPUT_EN: + s->output_en = value; + break; + + case SIFIVE_GPIO_REG_PORT: + s->port = value; + break; + + case SIFIVE_GPIO_REG_PUE: + s->pue = value; + break; + + case SIFIVE_GPIO_REG_DS: + s->ds = value; + break; + + case SIFIVE_GPIO_REG_RISE_IE: + s->rise_ie = value; + break; + + case SIFIVE_GPIO_REG_RISE_IP: + /* Write 1 to clear */ + s->rise_ip &= ~value; + break; + + case SIFIVE_GPIO_REG_FALL_IE: + s->fall_ie = value; + break; + + case SIFIVE_GPIO_REG_FALL_IP: + /* Write 1 to clear */ + s->fall_ip &= ~value; + break; + + case SIFIVE_GPIO_REG_HIGH_IE: + s->high_ie = value; + break; + + case SIFIVE_GPIO_REG_HIGH_IP: + /* Write 1 to clear */ + s->high_ip &= ~value; + break; + + case SIFIVE_GPIO_REG_LOW_IE: + s->low_ie = value; + break; + + case SIFIVE_GPIO_REG_LOW_IP: + /* Write 1 to clear */ + s->low_ip &= ~value; + break; + + case SIFIVE_GPIO_REG_IOF_EN: + s->iof_en = value; + break; + + case SIFIVE_GPIO_REG_IOF_SEL: + s->iof_sel = value; + break; + + case SIFIVE_GPIO_REG_OUT_XOR: + s->out_xor = value; + break; + + default: + qemu_log_mask(LOG_GUEST_ERROR, + "%s: bad write offset 0x%" HWADDR_PRIx "\n", + __func__, offset); + } + + update_state(s); +} + +static const MemoryRegionOps gpio_ops = { + .read = sifive_gpio_read, + .write = sifive_gpio_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .impl.min_access_size = 4, + .impl.max_access_size = 4, +}; + +static void sifive_gpio_set(void *opaque, int line, int value) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(opaque); + + trace_sifive_gpio_set(line, value); + + assert(line >= 0 && line < SIFIVE_GPIO_PINS); + + s->in_mask = deposit32(s->in_mask, line, 1, value >= 0); + if (value >= 0) { + s->in = deposit32(s->in, line, 1, value != 0); + } + + update_state(s); +} + +static void sifive_gpio_reset(DeviceState *dev) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(dev); + + s->value = 0; + s->input_en = 0; + s->output_en = 0; + s->port = 0; + s->pue = 0; + s->ds = 0; + s->rise_ie = 0; + s->rise_ip = 0; + s->fall_ie = 0; + s->fall_ip = 0; + s->high_ie = 0; + s->high_ip = 0; + s->low_ie = 0; + s->low_ip = 0; + s->iof_en = 0; + s->iof_sel = 0; + s->out_xor = 0; + s->in = 0; + s->in_mask = 0; +} + +static const VMStateDescription vmstate_sifive_gpio = { + .name = TYPE_SIFIVE_GPIO, + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_UINT32(value, SIFIVEGPIOState), + VMSTATE_UINT32(input_en, SIFIVEGPIOState), + VMSTATE_UINT32(output_en, SIFIVEGPIOState), + VMSTATE_UINT32(port, SIFIVEGPIOState), + VMSTATE_UINT32(pue, SIFIVEGPIOState), + VMSTATE_UINT32(rise_ie, SIFIVEGPIOState), + VMSTATE_UINT32(rise_ip, SIFIVEGPIOState), + VMSTATE_UINT32(fall_ie, SIFIVEGPIOState), + VMSTATE_UINT32(fall_ip, SIFIVEGPIOState), + VMSTATE_UINT32(high_ie, SIFIVEGPIOState), + VMSTATE_UINT32(high_ip, SIFIVEGPIOState), + VMSTATE_UINT32(low_ie, SIFIVEGPIOState), + VMSTATE_UINT32(low_ip, SIFIVEGPIOState), + VMSTATE_UINT32(iof_en, SIFIVEGPIOState), + VMSTATE_UINT32(iof_sel, SIFIVEGPIOState), + VMSTATE_UINT32(out_xor, SIFIVEGPIOState), + VMSTATE_UINT32(in, SIFIVEGPIOState), + VMSTATE_UINT32(in_mask, SIFIVEGPIOState), + VMSTATE_END_OF_LIST() + } +}; + +static Property sifive_gpio_properties[] = { + DEFINE_PROP_UINT32("ngpio", SIFIVEGPIOState, ngpio, SIFIVE_GPIO_PINS), + DEFINE_PROP_END_OF_LIST(), +}; + +static void sifive_gpio_realize(DeviceState *dev, Error **errp) +{ + SIFIVEGPIOState *s = SIFIVE_GPIO(dev); + + memory_region_init_io(&s->mmio, OBJECT(dev), &gpio_ops, s, + TYPE_SIFIVE_GPIO, SIFIVE_GPIO_SIZE); + + sysbus_init_mmio(SYS_BUS_DEVICE(dev), &s->mmio); + + for (int i = 0; i < s->ngpio; i++) { + sysbus_init_irq(SYS_BUS_DEVICE(dev), &s->irq[i]); + } + + qdev_init_gpio_in(DEVICE(s), sifive_gpio_set, s->ngpio); + qdev_init_gpio_out(DEVICE(s), s->output, s->ngpio); +} + +static void sifive_gpio_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + + device_class_set_props(dc, sifive_gpio_properties); + dc->vmsd = &vmstate_sifive_gpio; + dc->realize = sifive_gpio_realize; + dc->reset = sifive_gpio_reset; + dc->desc = "SiFive GPIO"; +} + +static const TypeInfo sifive_gpio_info = { + .name = TYPE_SIFIVE_GPIO, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(SIFIVEGPIOState), + .class_init = sifive_gpio_class_init +}; + +static void sifive_gpio_register_types(void) +{ + type_register_static(&sifive_gpio_info); +} + +type_init(sifive_gpio_register_types) diff --git a/hw/gpio/trace-events b/hw/gpio/trace-events index c1271fd..6e3f048 100644 --- a/hw/gpio/trace-events +++ b/hw/gpio/trace-events @@ -5,3 +5,9 @@ nrf51_gpio_read(uint64_t offset, uint64_t r) "offset 0x%" PRIx64 " value 0x%" PR nrf51_gpio_write(uint64_t offset, uint64_t value) "offset 0x%" PRIx64 " value 0x%" PRIx64 nrf51_gpio_set(int64_t line, int64_t value) "line %" PRIi64 " value %" PRIi64 nrf51_gpio_update_output_irq(int64_t line, int64_t value) "line %" PRIi64 " value %" PRIi64 + +# sifive_gpio.c +sifive_gpio_read(uint64_t offset, uint64_t r) "offset 0x%" PRIx64 " value 0x%" PRIx64 +sifive_gpio_write(uint64_t offset, uint64_t value) "offset 0x%" PRIx64 " value 0x%" PRIx64 +sifive_gpio_set(int64_t line, int64_t value) "line %" PRIi64 " value %" PRIi64 +sifive_gpio_update_output_irq(int64_t line, int64_t value) "line %" PRIi64 " value %" PRIi64 |