484 lines
15 KiB
C
484 lines
15 KiB
C
/*
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* Samsung exynos4210 GIC implementation. Based on hw/arm_gic.c
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*
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* Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd.
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* All rights reserved.
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*
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* Evgeny Voevodin <e.voevodin@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "hw/sysbus.h"
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#include "migration/vmstate.h"
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#include "qapi/error.h"
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#include "qemu/module.h"
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#include "hw/irq.h"
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#include "hw/qdev-properties.h"
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#include "hw/arm/exynos4210.h"
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enum ExtGicId {
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EXT_GIC_ID_MDMA_LCD0 = 66,
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EXT_GIC_ID_PDMA0,
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EXT_GIC_ID_PDMA1,
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EXT_GIC_ID_TIMER0,
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EXT_GIC_ID_TIMER1,
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EXT_GIC_ID_TIMER2,
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EXT_GIC_ID_TIMER3,
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EXT_GIC_ID_TIMER4,
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EXT_GIC_ID_MCT_L0,
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EXT_GIC_ID_WDT,
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EXT_GIC_ID_RTC_ALARM,
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EXT_GIC_ID_RTC_TIC,
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EXT_GIC_ID_GPIO_XB,
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EXT_GIC_ID_GPIO_XA,
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EXT_GIC_ID_MCT_L1,
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EXT_GIC_ID_IEM_APC,
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EXT_GIC_ID_IEM_IEC,
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EXT_GIC_ID_NFC,
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EXT_GIC_ID_UART0,
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EXT_GIC_ID_UART1,
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EXT_GIC_ID_UART2,
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EXT_GIC_ID_UART3,
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EXT_GIC_ID_UART4,
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EXT_GIC_ID_MCT_G0,
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EXT_GIC_ID_I2C0,
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EXT_GIC_ID_I2C1,
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EXT_GIC_ID_I2C2,
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EXT_GIC_ID_I2C3,
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EXT_GIC_ID_I2C4,
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EXT_GIC_ID_I2C5,
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EXT_GIC_ID_I2C6,
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EXT_GIC_ID_I2C7,
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EXT_GIC_ID_SPI0,
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EXT_GIC_ID_SPI1,
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EXT_GIC_ID_SPI2,
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EXT_GIC_ID_MCT_G1,
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EXT_GIC_ID_USB_HOST,
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EXT_GIC_ID_USB_DEVICE,
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EXT_GIC_ID_MODEMIF,
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EXT_GIC_ID_HSMMC0,
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EXT_GIC_ID_HSMMC1,
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EXT_GIC_ID_HSMMC2,
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EXT_GIC_ID_HSMMC3,
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EXT_GIC_ID_SDMMC,
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EXT_GIC_ID_MIPI_CSI_4LANE,
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EXT_GIC_ID_MIPI_DSI_4LANE,
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EXT_GIC_ID_MIPI_CSI_2LANE,
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EXT_GIC_ID_MIPI_DSI_2LANE,
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EXT_GIC_ID_ONENAND_AUDI,
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EXT_GIC_ID_ROTATOR,
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EXT_GIC_ID_FIMC0,
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EXT_GIC_ID_FIMC1,
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EXT_GIC_ID_FIMC2,
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EXT_GIC_ID_FIMC3,
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EXT_GIC_ID_JPEG,
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EXT_GIC_ID_2D,
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EXT_GIC_ID_PCIe,
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EXT_GIC_ID_MIXER,
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EXT_GIC_ID_HDMI,
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EXT_GIC_ID_HDMI_I2C,
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EXT_GIC_ID_MFC,
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EXT_GIC_ID_TVENC,
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};
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enum ExtInt {
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EXT_GIC_ID_EXTINT0 = 48,
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EXT_GIC_ID_EXTINT1,
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EXT_GIC_ID_EXTINT2,
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EXT_GIC_ID_EXTINT3,
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EXT_GIC_ID_EXTINT4,
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EXT_GIC_ID_EXTINT5,
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EXT_GIC_ID_EXTINT6,
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EXT_GIC_ID_EXTINT7,
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EXT_GIC_ID_EXTINT8,
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EXT_GIC_ID_EXTINT9,
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EXT_GIC_ID_EXTINT10,
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EXT_GIC_ID_EXTINT11,
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EXT_GIC_ID_EXTINT12,
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EXT_GIC_ID_EXTINT13,
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EXT_GIC_ID_EXTINT14,
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EXT_GIC_ID_EXTINT15
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};
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/*
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* External GIC sources which are not from External Interrupt Combiner or
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* External Interrupts are starting from EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ,
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* which is INTG16 in Internal Interrupt Combiner.
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*/
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static const uint32_t
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combiner_grp_to_gic_id[64-EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ][8] = {
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/* int combiner groups 16-19 */
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{ }, { }, { }, { },
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/* int combiner group 20 */
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{ 0, EXT_GIC_ID_MDMA_LCD0 },
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/* int combiner group 21 */
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{ EXT_GIC_ID_PDMA0, EXT_GIC_ID_PDMA1 },
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/* int combiner group 22 */
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{ EXT_GIC_ID_TIMER0, EXT_GIC_ID_TIMER1, EXT_GIC_ID_TIMER2,
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EXT_GIC_ID_TIMER3, EXT_GIC_ID_TIMER4 },
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/* int combiner group 23 */
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{ EXT_GIC_ID_RTC_ALARM, EXT_GIC_ID_RTC_TIC },
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/* int combiner group 24 */
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{ EXT_GIC_ID_GPIO_XB, EXT_GIC_ID_GPIO_XA },
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/* int combiner group 25 */
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{ EXT_GIC_ID_IEM_APC, EXT_GIC_ID_IEM_IEC },
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/* int combiner group 26 */
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{ EXT_GIC_ID_UART0, EXT_GIC_ID_UART1, EXT_GIC_ID_UART2, EXT_GIC_ID_UART3,
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EXT_GIC_ID_UART4 },
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/* int combiner group 27 */
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{ EXT_GIC_ID_I2C0, EXT_GIC_ID_I2C1, EXT_GIC_ID_I2C2, EXT_GIC_ID_I2C3,
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EXT_GIC_ID_I2C4, EXT_GIC_ID_I2C5, EXT_GIC_ID_I2C6,
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EXT_GIC_ID_I2C7 },
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/* int combiner group 28 */
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{ EXT_GIC_ID_SPI0, EXT_GIC_ID_SPI1, EXT_GIC_ID_SPI2 , EXT_GIC_ID_USB_HOST},
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/* int combiner group 29 */
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{ EXT_GIC_ID_HSMMC0, EXT_GIC_ID_HSMMC1, EXT_GIC_ID_HSMMC2,
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EXT_GIC_ID_HSMMC3, EXT_GIC_ID_SDMMC },
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/* int combiner group 30 */
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{ EXT_GIC_ID_MIPI_CSI_4LANE, EXT_GIC_ID_MIPI_CSI_2LANE },
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/* int combiner group 31 */
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{ EXT_GIC_ID_MIPI_DSI_4LANE, EXT_GIC_ID_MIPI_DSI_2LANE },
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/* int combiner group 32 */
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{ EXT_GIC_ID_FIMC0, EXT_GIC_ID_FIMC1 },
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/* int combiner group 33 */
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{ EXT_GIC_ID_FIMC2, EXT_GIC_ID_FIMC3 },
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/* int combiner group 34 */
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{ EXT_GIC_ID_ONENAND_AUDI, EXT_GIC_ID_NFC },
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/* int combiner group 35 */
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{ 0, 0, 0, EXT_GIC_ID_MCT_L1, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
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/* int combiner group 36 */
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{ EXT_GIC_ID_MIXER },
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/* int combiner group 37 */
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{ EXT_GIC_ID_EXTINT4, EXT_GIC_ID_EXTINT5, EXT_GIC_ID_EXTINT6,
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EXT_GIC_ID_EXTINT7 },
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/* groups 38-50 */
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{ }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { }, { },
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/* int combiner group 51 */
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{ EXT_GIC_ID_MCT_L0, 0, 0, 0, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
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/* group 52 */
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{ },
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/* int combiner group 53 */
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{ EXT_GIC_ID_WDT, 0, 0, 0, EXT_GIC_ID_MCT_G0, EXT_GIC_ID_MCT_G1 },
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/* groups 54-63 */
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{ }, { }, { }, { }, { }, { }, { }, { }, { }, { }
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};
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#define EXYNOS4210_GIC_NIRQ 160
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#define EXYNOS4210_EXT_GIC_CPU_REGION_SIZE 0x10000
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#define EXYNOS4210_EXT_GIC_DIST_REGION_SIZE 0x10000
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#define EXYNOS4210_EXT_GIC_PER_CPU_OFFSET 0x8000
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#define EXYNOS4210_EXT_GIC_CPU_GET_OFFSET(n) \
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((n) * EXYNOS4210_EXT_GIC_PER_CPU_OFFSET)
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#define EXYNOS4210_EXT_GIC_DIST_GET_OFFSET(n) \
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((n) * EXYNOS4210_EXT_GIC_PER_CPU_OFFSET)
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#define EXYNOS4210_GIC_CPU_REGION_SIZE 0x100
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#define EXYNOS4210_GIC_DIST_REGION_SIZE 0x1000
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static void exynos4210_irq_handler(void *opaque, int irq, int level)
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{
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Exynos4210Irq *s = (Exynos4210Irq *)opaque;
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/* Bypass */
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qemu_set_irq(s->board_irqs[irq], level);
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}
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/*
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* Initialize exynos4210 IRQ subsystem stub.
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*/
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qemu_irq *exynos4210_init_irq(Exynos4210Irq *s)
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{
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return qemu_allocate_irqs(exynos4210_irq_handler, s,
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EXYNOS4210_MAX_INT_COMBINER_IN_IRQ);
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}
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/*
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* Initialize board IRQs.
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* These IRQs contain splitted Int/External Combiner and External Gic IRQs.
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*/
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void exynos4210_init_board_irqs(Exynos4210Irq *s)
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{
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uint32_t grp, bit, irq_id, n;
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for (n = 0; n < EXYNOS4210_MAX_EXT_COMBINER_IN_IRQ; n++) {
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irq_id = 0;
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if (n == EXYNOS4210_COMBINER_GET_IRQ_NUM(1, 4) ||
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n == EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 4)) {
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/* MCT_G0 is passed to External GIC */
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irq_id = EXT_GIC_ID_MCT_G0;
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}
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if (n == EXYNOS4210_COMBINER_GET_IRQ_NUM(1, 5) ||
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n == EXYNOS4210_COMBINER_GET_IRQ_NUM(12, 5)) {
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/* MCT_G1 is passed to External and GIC */
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irq_id = EXT_GIC_ID_MCT_G1;
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}
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if (irq_id) {
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s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
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s->ext_gic_irq[irq_id-32]);
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} else {
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s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
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s->ext_combiner_irq[n]);
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}
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}
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for (; n < EXYNOS4210_MAX_INT_COMBINER_IN_IRQ; n++) {
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/* these IDs are passed to Internal Combiner and External GIC */
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grp = EXYNOS4210_COMBINER_GET_GRP_NUM(n);
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bit = EXYNOS4210_COMBINER_GET_BIT_NUM(n);
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irq_id = combiner_grp_to_gic_id[grp -
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EXYNOS4210_MAX_EXT_COMBINER_OUT_IRQ][bit];
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if (irq_id) {
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s->board_irqs[n] = qemu_irq_split(s->int_combiner_irq[n],
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s->ext_gic_irq[irq_id-32]);
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}
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}
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}
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/*
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* Get IRQ number from exynos4210 IRQ subsystem stub.
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* To identify IRQ source use internal combiner group and bit number
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* grp - group number
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* bit - bit number inside group
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*/
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uint32_t exynos4210_get_irq(uint32_t grp, uint32_t bit)
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{
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return EXYNOS4210_COMBINER_GET_IRQ_NUM(grp, bit);
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}
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/********* GIC part *********/
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#define TYPE_EXYNOS4210_GIC "exynos4210.gic"
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#define EXYNOS4210_GIC(obj) \
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OBJECT_CHECK(Exynos4210GicState, (obj), TYPE_EXYNOS4210_GIC)
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typedef struct {
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SysBusDevice parent_obj;
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MemoryRegion cpu_container;
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MemoryRegion dist_container;
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MemoryRegion cpu_alias[EXYNOS4210_NCPUS];
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MemoryRegion dist_alias[EXYNOS4210_NCPUS];
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uint32_t num_cpu;
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DeviceState *gic;
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} Exynos4210GicState;
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static void exynos4210_gic_set_irq(void *opaque, int irq, int level)
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{
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Exynos4210GicState *s = (Exynos4210GicState *)opaque;
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qemu_set_irq(qdev_get_gpio_in(s->gic, irq), level);
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}
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static void exynos4210_gic_realize(DeviceState *dev, Error **errp)
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{
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Object *obj = OBJECT(dev);
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Exynos4210GicState *s = EXYNOS4210_GIC(obj);
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SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
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const char cpu_prefix[] = "exynos4210-gic-alias_cpu";
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const char dist_prefix[] = "exynos4210-gic-alias_dist";
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char cpu_alias_name[sizeof(cpu_prefix) + 3];
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char dist_alias_name[sizeof(cpu_prefix) + 3];
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SysBusDevice *gicbusdev;
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uint32_t n = s->num_cpu;
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uint32_t i;
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s->gic = qdev_new("arm_gic");
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qdev_prop_set_uint32(s->gic, "num-cpu", s->num_cpu);
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qdev_prop_set_uint32(s->gic, "num-irq", EXYNOS4210_GIC_NIRQ);
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qdev_realize_and_unref(s->gic, NULL, &error_fatal);
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gicbusdev = SYS_BUS_DEVICE(s->gic);
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/* Pass through outbound IRQ lines from the GIC */
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sysbus_pass_irq(sbd, gicbusdev);
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/* Pass through inbound GPIO lines to the GIC */
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qdev_init_gpio_in(dev, exynos4210_gic_set_irq,
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EXYNOS4210_GIC_NIRQ - 32);
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memory_region_init(&s->cpu_container, obj, "exynos4210-cpu-container",
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EXYNOS4210_EXT_GIC_CPU_REGION_SIZE);
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memory_region_init(&s->dist_container, obj, "exynos4210-dist-container",
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EXYNOS4210_EXT_GIC_DIST_REGION_SIZE);
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/*
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* This clues in gcc that our on-stack buffers do, in fact have
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* enough room for the cpu numbers. gcc 9.2.1 on 32-bit x86
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* doesn't figure this out, otherwise and gives spurious warnings.
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*/
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assert(n <= EXYNOS4210_NCPUS);
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for (i = 0; i < n; i++) {
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/* Map CPU interface per SMP Core */
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sprintf(cpu_alias_name, "%s%x", cpu_prefix, i);
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memory_region_init_alias(&s->cpu_alias[i], obj,
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cpu_alias_name,
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sysbus_mmio_get_region(gicbusdev, 1),
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0,
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EXYNOS4210_GIC_CPU_REGION_SIZE);
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memory_region_add_subregion(&s->cpu_container,
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EXYNOS4210_EXT_GIC_CPU_GET_OFFSET(i), &s->cpu_alias[i]);
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/* Map Distributor per SMP Core */
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sprintf(dist_alias_name, "%s%x", dist_prefix, i);
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memory_region_init_alias(&s->dist_alias[i], obj,
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dist_alias_name,
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sysbus_mmio_get_region(gicbusdev, 0),
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0,
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EXYNOS4210_GIC_DIST_REGION_SIZE);
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memory_region_add_subregion(&s->dist_container,
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EXYNOS4210_EXT_GIC_DIST_GET_OFFSET(i), &s->dist_alias[i]);
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}
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sysbus_init_mmio(sbd, &s->cpu_container);
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sysbus_init_mmio(sbd, &s->dist_container);
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}
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static Property exynos4210_gic_properties[] = {
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DEFINE_PROP_UINT32("num-cpu", Exynos4210GicState, num_cpu, 1),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void exynos4210_gic_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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device_class_set_props(dc, exynos4210_gic_properties);
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dc->realize = exynos4210_gic_realize;
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}
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static const TypeInfo exynos4210_gic_info = {
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.name = TYPE_EXYNOS4210_GIC,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(Exynos4210GicState),
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.class_init = exynos4210_gic_class_init,
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};
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static void exynos4210_gic_register_types(void)
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{
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type_register_static(&exynos4210_gic_info);
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}
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type_init(exynos4210_gic_register_types)
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/* IRQ OR Gate struct.
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*
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* This device models an OR gate. There are n_in input qdev gpio lines and one
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* output sysbus IRQ line. The output IRQ level is formed as OR between all
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* gpio inputs.
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*/
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#define TYPE_EXYNOS4210_IRQ_GATE "exynos4210.irq_gate"
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#define EXYNOS4210_IRQ_GATE(obj) \
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OBJECT_CHECK(Exynos4210IRQGateState, (obj), TYPE_EXYNOS4210_IRQ_GATE)
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typedef struct Exynos4210IRQGateState {
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SysBusDevice parent_obj;
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uint32_t n_in; /* inputs amount */
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uint32_t *level; /* input levels */
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qemu_irq out; /* output IRQ */
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} Exynos4210IRQGateState;
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static Property exynos4210_irq_gate_properties[] = {
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DEFINE_PROP_UINT32("n_in", Exynos4210IRQGateState, n_in, 1),
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DEFINE_PROP_END_OF_LIST(),
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};
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static const VMStateDescription vmstate_exynos4210_irq_gate = {
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.name = "exynos4210.irq_gate",
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.version_id = 2,
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.minimum_version_id = 2,
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.fields = (VMStateField[]) {
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VMSTATE_VBUFFER_UINT32(level, Exynos4210IRQGateState, 1, NULL, n_in),
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VMSTATE_END_OF_LIST()
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}
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};
|
|
|
|
/* Process a change in IRQ input. */
|
|
static void exynos4210_irq_gate_handler(void *opaque, int irq, int level)
|
|
{
|
|
Exynos4210IRQGateState *s = (Exynos4210IRQGateState *)opaque;
|
|
uint32_t i;
|
|
|
|
assert(irq < s->n_in);
|
|
|
|
s->level[irq] = level;
|
|
|
|
for (i = 0; i < s->n_in; i++) {
|
|
if (s->level[i] >= 1) {
|
|
qemu_irq_raise(s->out);
|
|
return;
|
|
}
|
|
}
|
|
|
|
qemu_irq_lower(s->out);
|
|
}
|
|
|
|
static void exynos4210_irq_gate_reset(DeviceState *d)
|
|
{
|
|
Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(d);
|
|
|
|
memset(s->level, 0, s->n_in * sizeof(*s->level));
|
|
}
|
|
|
|
/*
|
|
* IRQ Gate initialization.
|
|
*/
|
|
static void exynos4210_irq_gate_init(Object *obj)
|
|
{
|
|
Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(obj);
|
|
SysBusDevice *sbd = SYS_BUS_DEVICE(obj);
|
|
|
|
sysbus_init_irq(sbd, &s->out);
|
|
}
|
|
|
|
static void exynos4210_irq_gate_realize(DeviceState *dev, Error **errp)
|
|
{
|
|
Exynos4210IRQGateState *s = EXYNOS4210_IRQ_GATE(dev);
|
|
|
|
/* Allocate general purpose input signals and connect a handler to each of
|
|
* them */
|
|
qdev_init_gpio_in(dev, exynos4210_irq_gate_handler, s->n_in);
|
|
|
|
s->level = g_malloc0(s->n_in * sizeof(*s->level));
|
|
}
|
|
|
|
static void exynos4210_irq_gate_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
|
|
dc->reset = exynos4210_irq_gate_reset;
|
|
dc->vmsd = &vmstate_exynos4210_irq_gate;
|
|
device_class_set_props(dc, exynos4210_irq_gate_properties);
|
|
dc->realize = exynos4210_irq_gate_realize;
|
|
}
|
|
|
|
static const TypeInfo exynos4210_irq_gate_info = {
|
|
.name = TYPE_EXYNOS4210_IRQ_GATE,
|
|
.parent = TYPE_SYS_BUS_DEVICE,
|
|
.instance_size = sizeof(Exynos4210IRQGateState),
|
|
.instance_init = exynos4210_irq_gate_init,
|
|
.class_init = exynos4210_irq_gate_class_init,
|
|
};
|
|
|
|
static void exynos4210_irq_gate_register_types(void)
|
|
{
|
|
type_register_static(&exynos4210_irq_gate_info);
|
|
}
|
|
|
|
type_init(exynos4210_irq_gate_register_types)
|