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author | Shengtan Mao <stmao@google.com> | 2021-10-07 17:26:24 -0700 |
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committer | Richard Henderson <richard.henderson@linaro.org> | 2021-11-02 14:14:55 -0400 |
commit | 8092b51849499be97c42c0f1a832ade969e38724 (patch) | |
tree | c2fe31721736c02ed7ec44579857facea8e4653a /hw/sd | |
parent | 91e8394415f9bc9cd81c02bfafe02012855d4f98 (diff) | |
download | qemu-8092b51849499be97c42c0f1a832ade969e38724.zip qemu-8092b51849499be97c42c0f1a832ade969e38724.tar.gz qemu-8092b51849499be97c42c0f1a832ade969e38724.tar.bz2 |
hw/sd: add nuvoton MMC
Signed-off-by: Shengtan Mao <stmao@google.com>
Signed-off-by: Hao Wu <wuhaotsh@google.com>
Reviewed-by: Hao Wu <wuhaotsh@google.com>
Reviewed-by: Chris Rauer <crauer@google.com>
Reviewed-by: Tyrone Ting <kfting@nuvoton.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20211008002628.1958285-2-wuhaotsh@google.com>
[rth: Fix typos of "nonexistent"]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'hw/sd')
-rw-r--r-- | hw/sd/meson.build | 1 | ||||
-rw-r--r-- | hw/sd/npcm7xx_sdhci.c | 182 |
2 files changed, 183 insertions, 0 deletions
diff --git a/hw/sd/meson.build b/hw/sd/meson.build index f1ce357..807ca07 100644 --- a/hw/sd/meson.build +++ b/hw/sd/meson.build @@ -9,4 +9,5 @@ softmmu_ss.add(when: 'CONFIG_PXA2XX', if_true: files('pxa2xx_mmci.c')) softmmu_ss.add(when: 'CONFIG_RASPI', if_true: files('bcm2835_sdhost.c')) softmmu_ss.add(when: 'CONFIG_ASPEED_SOC', if_true: files('aspeed_sdhci.c')) softmmu_ss.add(when: 'CONFIG_ALLWINNER_H3', if_true: files('allwinner-sdhost.c')) +softmmu_ss.add(when: 'CONFIG_NPCM7XX', if_true: files('npcm7xx_sdhci.c')) softmmu_ss.add(when: 'CONFIG_CADENCE_SDHCI', if_true: files('cadence_sdhci.c')) diff --git a/hw/sd/npcm7xx_sdhci.c b/hw/sd/npcm7xx_sdhci.c new file mode 100644 index 0000000..ef50336 --- /dev/null +++ b/hw/sd/npcm7xx_sdhci.c @@ -0,0 +1,182 @@ +/* + * NPCM7xx SD-3.0 / eMMC-4.51 Host Controller + * + * Copyright (c) 2021 Google LLC + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + */ + +#include "qemu/osdep.h" + +#include "hw/sd/npcm7xx_sdhci.h" +#include "migration/vmstate.h" +#include "sdhci-internal.h" +#include "qemu/log.h" + +static uint64_t npcm7xx_sdhci_read(void *opaque, hwaddr addr, unsigned int size) +{ + NPCM7xxSDHCIState *s = opaque; + uint64_t val = 0; + + switch (addr) { + case NPCM7XX_PRSTVALS_0: + case NPCM7XX_PRSTVALS_1: + case NPCM7XX_PRSTVALS_2: + case NPCM7XX_PRSTVALS_3: + case NPCM7XX_PRSTVALS_4: + case NPCM7XX_PRSTVALS_5: + val = s->regs.prstvals[(addr - NPCM7XX_PRSTVALS_0) / 2]; + break; + case NPCM7XX_BOOTTOCTRL: + val = s->regs.boottoctrl; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "SDHCI read of nonexistent reg: 0x%02" + HWADDR_PRIx, addr); + break; + } + + return val; +} + +static void npcm7xx_sdhci_write(void *opaque, hwaddr addr, uint64_t val, + unsigned int size) +{ + NPCM7xxSDHCIState *s = opaque; + + switch (addr) { + case NPCM7XX_BOOTTOCTRL: + s->regs.boottoctrl = val; + break; + default: + qemu_log_mask(LOG_GUEST_ERROR, "SDHCI write of nonexistent reg: 0x%02" + HWADDR_PRIx, addr); + break; + } +} + +static bool npcm7xx_sdhci_check_mem_op(void *opaque, hwaddr addr, + unsigned size, bool is_write, + MemTxAttrs attrs) +{ + switch (addr) { + case NPCM7XX_PRSTVALS_0: + case NPCM7XX_PRSTVALS_1: + case NPCM7XX_PRSTVALS_2: + case NPCM7XX_PRSTVALS_3: + case NPCM7XX_PRSTVALS_4: + case NPCM7XX_PRSTVALS_5: + /* RO Word */ + return !is_write && size == 2; + case NPCM7XX_BOOTTOCTRL: + /* R/W Dword */ + return size == 4; + default: + return false; + } +} + +static const MemoryRegionOps npcm7xx_sdhci_ops = { + .read = npcm7xx_sdhci_read, + .write = npcm7xx_sdhci_write, + .endianness = DEVICE_NATIVE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 4, + .unaligned = false, + .accepts = npcm7xx_sdhci_check_mem_op, + }, +}; + +static void npcm7xx_sdhci_realize(DeviceState *dev, Error **errp) +{ + NPCM7xxSDHCIState *s = NPCM7XX_SDHCI(dev); + SysBusDevice *sbd = SYS_BUS_DEVICE(dev); + SysBusDevice *sbd_sdhci = SYS_BUS_DEVICE(&s->sdhci); + + memory_region_init(&s->container, OBJECT(s), + "npcm7xx.sdhci-container", 0x1000); + sysbus_init_mmio(sbd, &s->container); + + memory_region_init_io(&s->iomem, OBJECT(s), &npcm7xx_sdhci_ops, s, + TYPE_NPCM7XX_SDHCI, NPCM7XX_SDHCI_REGSIZE); + memory_region_add_subregion_overlap(&s->container, NPCM7XX_PRSTVALS, + &s->iomem, 1); + + sysbus_realize(sbd_sdhci, errp); + memory_region_add_subregion(&s->container, 0, + sysbus_mmio_get_region(sbd_sdhci, 0)); + + /* propagate irq and "sd-bus" from generic-sdhci */ + sysbus_pass_irq(sbd, sbd_sdhci); + s->bus = qdev_get_child_bus(DEVICE(sbd_sdhci), "sd-bus"); + + /* Set the read only preset values. */ + memset(s->regs.prstvals, 0, sizeof(s->regs.prstvals)); + s->regs.prstvals[0] = NPCM7XX_PRSTVALS_0_RESET; + s->regs.prstvals[1] = NPCM7XX_PRSTVALS_1_RESET; + s->regs.prstvals[3] = NPCM7XX_PRSTVALS_3_RESET; +} + +static void npcm7xx_sdhci_reset(DeviceState *dev) +{ + NPCM7xxSDHCIState *s = NPCM7XX_SDHCI(dev); + device_cold_reset(DEVICE(&s->sdhci)); + s->regs.boottoctrl = 0; + + s->sdhci.prnsts = NPCM7XX_PRSNTS_RESET; + s->sdhci.blkgap = NPCM7XX_BLKGAP_RESET; + s->sdhci.capareg = NPCM7XX_CAPAB_RESET; + s->sdhci.maxcurr = NPCM7XX_MAXCURR_RESET; + s->sdhci.version = NPCM7XX_HCVER_RESET; +} + +static const VMStateDescription vmstate_npcm7xx_sdhci = { + .name = TYPE_NPCM7XX_SDHCI, + .version_id = 0, + .fields = (VMStateField[]) { + VMSTATE_UINT32(regs.boottoctrl, NPCM7xxSDHCIState), + VMSTATE_END_OF_LIST(), + }, +}; + +static void npcm7xx_sdhci_class_init(ObjectClass *classp, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(classp); + + dc->desc = "NPCM7xx SD/eMMC Host Controller"; + dc->realize = npcm7xx_sdhci_realize; + dc->reset = npcm7xx_sdhci_reset; + dc->vmsd = &vmstate_npcm7xx_sdhci; +} + +static void npcm7xx_sdhci_instance_init(Object *obj) +{ + NPCM7xxSDHCIState *s = NPCM7XX_SDHCI(obj); + + object_initialize_child(OBJECT(s), "generic-sdhci", &s->sdhci, + TYPE_SYSBUS_SDHCI); +} + +static TypeInfo npcm7xx_sdhci_info = { + .name = TYPE_NPCM7XX_SDHCI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(NPCM7xxSDHCIState), + .instance_init = npcm7xx_sdhci_instance_init, + .class_init = npcm7xx_sdhci_class_init, +}; + +static void npcm7xx_sdhci_register_types(void) +{ + type_register_static(&npcm7xx_sdhci_info); +} + +type_init(npcm7xx_sdhci_register_types) |