From 65ca801bf4837237f37f867c7fd49c3054d78091 Mon Sep 17 00:00:00 2001 From: BALATON Zoltan Date: Sun, 20 Aug 2017 19:23:05 +0200 Subject: ppc4xx: Split off 4xx I2C emulation from ppc405_uc to its own file This device appears in other SoCs as well not just in 405 ones and subsequent patches will modify it, so move it out of ppc405_uc.c in preparation Signed-off-by: BALATON Zoltan Signed-off-by: David Gibson --- hw/ppc/Makefile.objs | 2 +- hw/ppc/ppc405.h | 2 + hw/ppc/ppc405_uc.c | 241 --------------------------------------------- hw/ppc/ppc4xx_i2c.c | 272 +++++++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 275 insertions(+), 242 deletions(-) create mode 100644 hw/ppc/ppc4xx_i2c.c (limited to 'hw') diff --git a/hw/ppc/Makefile.objs b/hw/ppc/Makefile.objs index 7efc686..2077216 100644 --- a/hw/ppc/Makefile.objs +++ b/hw/ppc/Makefile.objs @@ -13,7 +13,7 @@ endif obj-$(CONFIG_PSERIES) += spapr_rtas_ddw.o # PowerPC 4xx boards obj-y += ppc405_boards.o ppc4xx_devs.o ppc405_uc.o ppc440_bamboo.o -obj-y += ppc4xx_pci.o +obj-y += ppc4xx_pci.o ppc4xx_i2c.o # PReP obj-$(CONFIG_PREP) += prep.o obj-$(CONFIG_PREP) += prep_systemio.o diff --git a/hw/ppc/ppc405.h b/hw/ppc/ppc405.h index a9ffc87..61ec739 100644 --- a/hw/ppc/ppc405.h +++ b/hw/ppc/ppc405.h @@ -59,6 +59,8 @@ struct ppc4xx_bd_info_t { ram_addr_t ppc405_set_bootinfo (CPUPPCState *env, ppc4xx_bd_info_t *bd, uint32_t flags); +void ppc405_i2c_init(hwaddr base, qemu_irq irq); + CPUPPCState *ppc405cr_init(MemoryRegion *address_space_mem, MemoryRegion ram_memories[4], hwaddr ram_bases[4], diff --git a/hw/ppc/ppc405_uc.c b/hw/ppc/ppc405_uc.c index 03856d5..3925e4c 100644 --- a/hw/ppc/ppc405_uc.c +++ b/hw/ppc/ppc405_uc.c @@ -40,7 +40,6 @@ //#define DEBUG_GPIO //#define DEBUG_SERIAL //#define DEBUG_OCM -//#define DEBUG_I2C //#define DEBUG_GPT //#define DEBUG_CLOCKS //#define DEBUG_CLOCKS_LL @@ -993,246 +992,6 @@ static void ppc405_ocm_init(CPUPPCState *env) } /*****************************************************************************/ -/* I2C controller */ -typedef struct ppc4xx_i2c_t ppc4xx_i2c_t; -struct ppc4xx_i2c_t { - qemu_irq irq; - MemoryRegion iomem; - uint8_t mdata; - uint8_t lmadr; - uint8_t hmadr; - uint8_t cntl; - uint8_t mdcntl; - uint8_t sts; - uint8_t extsts; - uint8_t sdata; - uint8_t lsadr; - uint8_t hsadr; - uint8_t clkdiv; - uint8_t intrmsk; - uint8_t xfrcnt; - uint8_t xtcntlss; - uint8_t directcntl; -}; - -static uint32_t ppc4xx_i2c_readb (void *opaque, hwaddr addr) -{ - ppc4xx_i2c_t *i2c; - uint32_t ret; - -#ifdef DEBUG_I2C - printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); -#endif - i2c = opaque; - switch (addr) { - case 0x00: - // i2c_readbyte(&i2c->mdata); - ret = i2c->mdata; - break; - case 0x02: - ret = i2c->sdata; - break; - case 0x04: - ret = i2c->lmadr; - break; - case 0x05: - ret = i2c->hmadr; - break; - case 0x06: - ret = i2c->cntl; - break; - case 0x07: - ret = i2c->mdcntl; - break; - case 0x08: - ret = i2c->sts; - break; - case 0x09: - ret = i2c->extsts; - break; - case 0x0A: - ret = i2c->lsadr; - break; - case 0x0B: - ret = i2c->hsadr; - break; - case 0x0C: - ret = i2c->clkdiv; - break; - case 0x0D: - ret = i2c->intrmsk; - break; - case 0x0E: - ret = i2c->xfrcnt; - break; - case 0x0F: - ret = i2c->xtcntlss; - break; - case 0x10: - ret = i2c->directcntl; - break; - default: - ret = 0x00; - break; - } -#ifdef DEBUG_I2C - printf("%s: addr " TARGET_FMT_plx " %02" PRIx32 "\n", __func__, addr, ret); -#endif - - return ret; -} - -static void ppc4xx_i2c_writeb (void *opaque, - hwaddr addr, uint32_t value) -{ - ppc4xx_i2c_t *i2c; - -#ifdef DEBUG_I2C - printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr, - value); -#endif - i2c = opaque; - switch (addr) { - case 0x00: - i2c->mdata = value; - // i2c_sendbyte(&i2c->mdata); - break; - case 0x02: - i2c->sdata = value; - break; - case 0x04: - i2c->lmadr = value; - break; - case 0x05: - i2c->hmadr = value; - break; - case 0x06: - i2c->cntl = value; - break; - case 0x07: - i2c->mdcntl = value & 0xDF; - break; - case 0x08: - i2c->sts &= ~(value & 0x0A); - break; - case 0x09: - i2c->extsts &= ~(value & 0x8F); - break; - case 0x0A: - i2c->lsadr = value; - break; - case 0x0B: - i2c->hsadr = value; - break; - case 0x0C: - i2c->clkdiv = value; - break; - case 0x0D: - i2c->intrmsk = value; - break; - case 0x0E: - i2c->xfrcnt = value & 0x77; - break; - case 0x0F: - i2c->xtcntlss = value; - break; - case 0x10: - i2c->directcntl = value & 0x7; - break; - } -} - -static uint32_t ppc4xx_i2c_readw (void *opaque, hwaddr addr) -{ - uint32_t ret; - -#ifdef DEBUG_I2C - printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); -#endif - ret = ppc4xx_i2c_readb(opaque, addr) << 8; - ret |= ppc4xx_i2c_readb(opaque, addr + 1); - - return ret; -} - -static void ppc4xx_i2c_writew (void *opaque, - hwaddr addr, uint32_t value) -{ -#ifdef DEBUG_I2C - printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr, - value); -#endif - ppc4xx_i2c_writeb(opaque, addr, value >> 8); - ppc4xx_i2c_writeb(opaque, addr + 1, value); -} - -static uint32_t ppc4xx_i2c_readl (void *opaque, hwaddr addr) -{ - uint32_t ret; - -#ifdef DEBUG_I2C - printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); -#endif - ret = ppc4xx_i2c_readb(opaque, addr) << 24; - ret |= ppc4xx_i2c_readb(opaque, addr + 1) << 16; - ret |= ppc4xx_i2c_readb(opaque, addr + 2) << 8; - ret |= ppc4xx_i2c_readb(opaque, addr + 3); - - return ret; -} - -static void ppc4xx_i2c_writel (void *opaque, - hwaddr addr, uint32_t value) -{ -#ifdef DEBUG_I2C - printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr, - value); -#endif - ppc4xx_i2c_writeb(opaque, addr, value >> 24); - ppc4xx_i2c_writeb(opaque, addr + 1, value >> 16); - ppc4xx_i2c_writeb(opaque, addr + 2, value >> 8); - ppc4xx_i2c_writeb(opaque, addr + 3, value); -} - -static const MemoryRegionOps i2c_ops = { - .old_mmio = { - .read = { ppc4xx_i2c_readb, ppc4xx_i2c_readw, ppc4xx_i2c_readl, }, - .write = { ppc4xx_i2c_writeb, ppc4xx_i2c_writew, ppc4xx_i2c_writel, }, - }, - .endianness = DEVICE_NATIVE_ENDIAN, -}; - -static void ppc4xx_i2c_reset (void *opaque) -{ - ppc4xx_i2c_t *i2c; - - i2c = opaque; - i2c->mdata = 0x00; - i2c->sdata = 0x00; - i2c->cntl = 0x00; - i2c->mdcntl = 0x00; - i2c->sts = 0x00; - i2c->extsts = 0x00; - i2c->clkdiv = 0x00; - i2c->xfrcnt = 0x00; - i2c->directcntl = 0x0F; -} - -static void ppc405_i2c_init(hwaddr base, qemu_irq irq) -{ - ppc4xx_i2c_t *i2c; - - i2c = g_malloc0(sizeof(ppc4xx_i2c_t)); - i2c->irq = irq; -#ifdef DEBUG_I2C - printf("%s: offset " TARGET_FMT_plx "\n", __func__, base); -#endif - memory_region_init_io(&i2c->iomem, NULL, &i2c_ops, i2c, "i2c", 0x011); - memory_region_add_subregion(get_system_memory(), base, &i2c->iomem); - qemu_register_reset(ppc4xx_i2c_reset, i2c); -} - -/*****************************************************************************/ /* General purpose timers */ typedef struct ppc4xx_gpt_t ppc4xx_gpt_t; struct ppc4xx_gpt_t { diff --git a/hw/ppc/ppc4xx_i2c.c b/hw/ppc/ppc4xx_i2c.c new file mode 100644 index 0000000..15f2dea --- /dev/null +++ b/hw/ppc/ppc4xx_i2c.c @@ -0,0 +1,272 @@ +/* + * PPC4xx I2C controller emulation + * + * Copyright (c) 2007 Jocelyn Mayer + * + * 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 "qemu/osdep.h" +#include "qapi/error.h" +#include "qemu-common.h" +#include "cpu.h" +#include "hw/hw.h" +#include "exec/address-spaces.h" +#include "hw/ppc/ppc.h" +#include "ppc405.h" + +/*#define DEBUG_I2C*/ + +typedef struct ppc4xx_i2c_t ppc4xx_i2c_t; +struct ppc4xx_i2c_t { + qemu_irq irq; + MemoryRegion iomem; + uint8_t mdata; + uint8_t lmadr; + uint8_t hmadr; + uint8_t cntl; + uint8_t mdcntl; + uint8_t sts; + uint8_t extsts; + uint8_t sdata; + uint8_t lsadr; + uint8_t hsadr; + uint8_t clkdiv; + uint8_t intrmsk; + uint8_t xfrcnt; + uint8_t xtcntlss; + uint8_t directcntl; +}; + +static uint32_t ppc4xx_i2c_readb(void *opaque, hwaddr addr) +{ + ppc4xx_i2c_t *i2c; + uint32_t ret; + +#ifdef DEBUG_I2C + printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); +#endif + i2c = opaque; + switch (addr) { + case 0x00: + /*i2c_readbyte(&i2c->mdata);*/ + ret = i2c->mdata; + break; + case 0x02: + ret = i2c->sdata; + break; + case 0x04: + ret = i2c->lmadr; + break; + case 0x05: + ret = i2c->hmadr; + break; + case 0x06: + ret = i2c->cntl; + break; + case 0x07: + ret = i2c->mdcntl; + break; + case 0x08: + ret = i2c->sts; + break; + case 0x09: + ret = i2c->extsts; + break; + case 0x0A: + ret = i2c->lsadr; + break; + case 0x0B: + ret = i2c->hsadr; + break; + case 0x0C: + ret = i2c->clkdiv; + break; + case 0x0D: + ret = i2c->intrmsk; + break; + case 0x0E: + ret = i2c->xfrcnt; + break; + case 0x0F: + ret = i2c->xtcntlss; + break; + case 0x10: + ret = i2c->directcntl; + break; + default: + ret = 0x00; + break; + } +#ifdef DEBUG_I2C + printf("%s: addr " TARGET_FMT_plx " %02" PRIx32 "\n", __func__, addr, ret); +#endif + + return ret; +} + +static void ppc4xx_i2c_writeb(void *opaque, + hwaddr addr, uint32_t value) +{ + ppc4xx_i2c_t *i2c; + +#ifdef DEBUG_I2C + printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr, + value); +#endif + i2c = opaque; + switch (addr) { + case 0x00: + i2c->mdata = value; + /*i2c_sendbyte(&i2c->mdata);*/ + break; + case 0x02: + i2c->sdata = value; + break; + case 0x04: + i2c->lmadr = value; + break; + case 0x05: + i2c->hmadr = value; + break; + case 0x06: + i2c->cntl = value; + break; + case 0x07: + i2c->mdcntl = value & 0xDF; + break; + case 0x08: + i2c->sts &= ~(value & 0x0A); + break; + case 0x09: + i2c->extsts &= ~(value & 0x8F); + break; + case 0x0A: + i2c->lsadr = value; + break; + case 0x0B: + i2c->hsadr = value; + break; + case 0x0C: + i2c->clkdiv = value; + break; + case 0x0D: + i2c->intrmsk = value; + break; + case 0x0E: + i2c->xfrcnt = value & 0x77; + break; + case 0x0F: + i2c->xtcntlss = value; + break; + case 0x10: + i2c->directcntl = value & 0x7; + break; + } +} + +static uint32_t ppc4xx_i2c_readw(void *opaque, hwaddr addr) +{ + uint32_t ret; + +#ifdef DEBUG_I2C + printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); +#endif + ret = ppc4xx_i2c_readb(opaque, addr) << 8; + ret |= ppc4xx_i2c_readb(opaque, addr + 1); + + return ret; +} + +static void ppc4xx_i2c_writew(void *opaque, + hwaddr addr, uint32_t value) +{ +#ifdef DEBUG_I2C + printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr, + value); +#endif + ppc4xx_i2c_writeb(opaque, addr, value >> 8); + ppc4xx_i2c_writeb(opaque, addr + 1, value); +} + +static uint32_t ppc4xx_i2c_readl(void *opaque, hwaddr addr) +{ + uint32_t ret; + +#ifdef DEBUG_I2C + printf("%s: addr " TARGET_FMT_plx "\n", __func__, addr); +#endif + ret = ppc4xx_i2c_readb(opaque, addr) << 24; + ret |= ppc4xx_i2c_readb(opaque, addr + 1) << 16; + ret |= ppc4xx_i2c_readb(opaque, addr + 2) << 8; + ret |= ppc4xx_i2c_readb(opaque, addr + 3); + + return ret; +} + +static void ppc4xx_i2c_writel(void *opaque, + hwaddr addr, uint32_t value) +{ +#ifdef DEBUG_I2C + printf("%s: addr " TARGET_FMT_plx " val %08" PRIx32 "\n", __func__, addr, + value); +#endif + ppc4xx_i2c_writeb(opaque, addr, value >> 24); + ppc4xx_i2c_writeb(opaque, addr + 1, value >> 16); + ppc4xx_i2c_writeb(opaque, addr + 2, value >> 8); + ppc4xx_i2c_writeb(opaque, addr + 3, value); +} + +static const MemoryRegionOps i2c_ops = { + .old_mmio = { + .read = { ppc4xx_i2c_readb, ppc4xx_i2c_readw, ppc4xx_i2c_readl, }, + .write = { ppc4xx_i2c_writeb, ppc4xx_i2c_writew, ppc4xx_i2c_writel, }, + }, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static void ppc4xx_i2c_reset(void *opaque) +{ + ppc4xx_i2c_t *i2c; + + i2c = opaque; + i2c->mdata = 0x00; + i2c->sdata = 0x00; + i2c->cntl = 0x00; + i2c->mdcntl = 0x00; + i2c->sts = 0x00; + i2c->extsts = 0x00; + i2c->clkdiv = 0x00; + i2c->xfrcnt = 0x00; + i2c->directcntl = 0x0F; +} + +void ppc405_i2c_init(hwaddr base, qemu_irq irq) +{ + ppc4xx_i2c_t *i2c; + + i2c = g_malloc0(sizeof(ppc4xx_i2c_t)); + i2c->irq = irq; +#ifdef DEBUG_I2C + printf("%s: offset " TARGET_FMT_plx "\n", __func__, base); +#endif + memory_region_init_io(&i2c->iomem, NULL, &i2c_ops, i2c, "i2c", 0x011); + memory_region_add_subregion(get_system_memory(), base, &i2c->iomem); + qemu_register_reset(ppc4xx_i2c_reset, i2c); +} -- cgit v1.1