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Ip=[149.199.60.83]; Helo=[xsj-pvapsmtpgw01] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR02MB3387 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 104.47.36.74 Subject: [Qemu-devel] [PATCH v1 1/2] timer: Initial commit of xlnx-pmu-iomod-pit device X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alistair23@gmail.com, alistair.francis@xilinx.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Signed-off-by: Alistair Francis --- include/hw/timer/xlnx-pmu-iomod-pit.h | 58 ++++++++ hw/timer/xlnx-pmu-iomod-pit.c | 241 ++++++++++++++++++++++++++++++= ++++ hw/timer/Makefile.objs | 2 + 3 files changed, 301 insertions(+) create mode 100644 include/hw/timer/xlnx-pmu-iomod-pit.h create mode 100644 hw/timer/xlnx-pmu-iomod-pit.c diff --git a/include/hw/timer/xlnx-pmu-iomod-pit.h b/include/hw/timer/xlnx-= pmu-iomod-pit.h new file mode 100644 index 0000000000..15f9f0dee5 --- /dev/null +++ b/include/hw/timer/xlnx-pmu-iomod-pit.h @@ -0,0 +1,58 @@ +/* + * QEMU model of Xilinx I/O Module PIT + * + * Copyright (c) 2013 Xilinx Inc + * Written by Edgar E. Iglesias + * + * Permission is hereby granted, free of charge, to any person obtaining a= copy + * of this software and associated documentation files (the "Software"), t= o deal + * in the Software without restriction, including without limitation the r= ights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or se= ll + * 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 OT= HER + * 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 "hw/ptimer.h" + +#define TYPE_XLNX_ZYNQMP_IOMODULE_PIT "xlnx.pmu_iomodule" + +#define XLNX_ZYNQMP_IOMODULE_PIT(obj) \ + OBJECT_CHECK(XlnxPMUPIT, (obj), TYPE_XLNX_ZYNQMP_IOMODULE_PIT) + +#define XLNX_ZYNQMP_IOMODULE_PIT_R_MAX (0x08 + 1) + +typedef struct XlnxPMUPIT { + SysBusDevice parent_obj; + MemoryRegion iomem; + + QEMUBH *bh; + ptimer_state *ptimer; + + qemu_irq irq; + /* IRQ to pulse out when present timer hits zero */ + qemu_irq hit_out; + + /* Counter in Pre-Scalar(ps) Mode */ + uint32_t ps_counter; + /* ps_mode irq-in to enable/disable pre-scalar */ + bool ps_enable; + /* State var to remember hit_in level */ + bool ps_level; + + uint32_t frequency; + + uint32_t regs[XLNX_ZYNQMP_IOMODULE_PIT_R_MAX]; + RegisterInfo regs_info[XLNX_ZYNQMP_IOMODULE_PIT_R_MAX]; +} XlnxPMUPIT; diff --git a/hw/timer/xlnx-pmu-iomod-pit.c b/hw/timer/xlnx-pmu-iomod-pit.c new file mode 100644 index 0000000000..cdfef1a440 --- /dev/null +++ b/hw/timer/xlnx-pmu-iomod-pit.c @@ -0,0 +1,241 @@ +/* + * QEMU model of Xilinx I/O Module PIT + * + * Copyright (c) 2013 Xilinx Inc + * Written by Edgar E. Iglesias + * + * Permission is hereby granted, free of charge, to any person obtaining a= copy + * of this software and associated documentation files (the "Software"), t= o deal + * in the Software without restriction, including without limitation the r= ights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or se= ll + * 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 OT= HER + * 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 "hw/sysbus.h" +#include "hw/ptimer.h" +#include "hw/register.h" +#include "qemu/main-loop.h" +#include "qemu/log.h" +#include "qapi/error.h" +#include "hw/timer/xlnx-pmu-iomod-pit.h" + +#ifndef XLNX_ZYNQMP_IOMODULE_PIT_ERR_DEBUG +#define XLNX_ZYNQMP_IOMODULE_PIT_ERR_DEBUG 0 +#endif + +REG32(PIT_PRELOAD, 0x00) +REG32(PIT_COUNTER, 0x04) +REG32(PIT_CONTROL, 0x08) + FIELD(PIT_CONTROL, PRELOAD, 1, 1) + FIELD(PIT_CONTROL, EN, 0, 1) + +static uint64_t xlnx_iomod_pit_ctr_pr(RegisterInfo *reg, uint64_t val) +{ + XlnxPMUPIT *s =3D XLNX_ZYNQMP_IOMODULE_PIT(reg->opaque); + uint32_t ret; + + if (s->ps_enable) { + ret =3D s->ps_counter; + } else { + ret =3D ptimer_get_count(s->ptimer); + } + + return ret; +} + +static void xlnx_iomod_pit_control_pw(RegisterInfo *reg, uint64_t val) +{ + XlnxPMUPIT *s =3D XLNX_ZYNQMP_IOMODULE_PIT(reg->opaque); + + ptimer_stop(s->ptimer); + + if (val & R_PIT_CONTROL_EN_MASK) { + if (s->ps_enable) { + /* pre-scalar mode do-Nothing here */ + s->ps_counter =3D s->regs[R_PIT_PRELOAD]; + } else { + ptimer_set_limit(s->ptimer, s->regs[R_PIT_PRELOAD], 1); + ptimer_run(s->ptimer, !(val & R_PIT_CONTROL_PRELOAD_MASK)); + + } + } +} + +static const RegisterAccessInfo xlnx_iomod_pit_regs_info[] =3D { + { .name =3D "PIT_PRELOAD", .addr =3D A_PIT_PRELOAD, + .ro =3D 0xffffffff, + },{ .name =3D "PIT_COUNTER", .addr =3D A_PIT_COUNTER, + .ro =3D 0xffffffff, + .post_read =3D xlnx_iomod_pit_ctr_pr, + },{ .name =3D "PIT_CONTROL", .addr =3D A_PIT_CONTROL, + .rsvd =3D 0xfffffffc, + .post_write =3D xlnx_iomod_pit_control_pw, + } +}; + +static void xlnx_iomod_pit_timer_hit(void *opaque) +{ + XlnxPMUPIT *s =3D XLNX_ZYNQMP_IOMODULE_PIT(opaque); + + qemu_irq_pulse(s->irq); + + /* hit_out to make another pit move it's counter in pre-scalar mode. */ + qemu_irq_pulse(s->hit_out); +} + +static void xlnx_iomod_pit_ps_config(void *opaque, int n, int level) +{ + XlnxPMUPIT *s =3D XLNX_ZYNQMP_IOMODULE_PIT(opaque); + + s->ps_enable =3D level; +} + +static void xlnx_iomod_pit_ps_hit_in(void *opaque, int n, int level) +{ + XlnxPMUPIT *s =3D XLNX_ZYNQMP_IOMODULE_PIT(opaque); + + if (!ARRAY_FIELD_EX32(s->regs, PIT_CONTROL, EN)) { + /* PIT disabled */ + return; + } + + /* Count only on positive edge */ + if (!s->ps_level && level) { + if (s->ps_counter) { + s->ps_counter--; + } + s->ps_level =3D level; + } else { + /* Not on positive edge */ + s->ps_level =3D level; + return; + } + + /* If timer expires, try to preload or stop */ + if (s->ps_counter =3D=3D 0) { + xlnx_iomod_pit_timer_hit(opaque); + + /* Check for pit preload/one-shot mode */ + if (ARRAY_FIELD_EX32(s->regs, PIT_CONTROL, PRELOAD)) { + /* Preload Mode, Reload the ps_counter */ + s->ps_counter =3D s->regs[R_PIT_PRELOAD]; + } else { + /* One-Shot mode, turn off the timer */ + s->regs[R_PIT_CONTROL] &=3D ~R_PIT_CONTROL_PRELOAD_MASK; + } + } +} + +static void xlnx_iomod_pit_reset(DeviceState *dev) +{ + XlnxPMUPIT *s =3D XLNX_ZYNQMP_IOMODULE_PIT(dev); + unsigned int i; + + for (i =3D 0; i < ARRAY_SIZE(s->regs_info); ++i) { + register_reset(&s->regs_info[i]); + } + + s->ps_level =3D false; +} + +static const MemoryRegionOps xlnx_iomod_pit_ops =3D { + .read =3D register_read_memory, + .write =3D register_write_memory, + .endianness =3D DEVICE_LITTLE_ENDIAN, + .valid =3D { + .min_access_size =3D 4, + .max_access_size =3D 4, + }, +}; + +static void xlnx_iomod_pit_realize(DeviceState *dev, Error **errp) +{ + XlnxPMUPIT *s =3D XLNX_ZYNQMP_IOMODULE_PIT(dev); + + s->bh =3D qemu_bh_new(xlnx_iomod_pit_timer_hit, s); + s->ptimer =3D ptimer_init(s->bh, PTIMER_POLICY_DEFAULT); + ptimer_set_freq(s->ptimer, s->frequency); + + /* IRQ out to pulse when present timer expires/reloads */ + qdev_init_gpio_out_named(dev, &s->hit_out, "ps_hit_out", 1); + + /* IRQ in to enable pre-scalar mode. Routed from gpo1 */ + qdev_init_gpio_in_named(dev, xlnx_iomod_pit_ps_config, "ps_config", 1); + + /* hit_out of neighbouring PIT is received as hit_in */ + qdev_init_gpio_in_named(dev, xlnx_iomod_pit_ps_hit_in, "ps_hit_in", 1); +} + +static void xlnx_iomod_pit_init(Object *obj) +{ + XlnxPMUPIT *s =3D XLNX_ZYNQMP_IOMODULE_PIT(obj); + SysBusDevice *sbd =3D SYS_BUS_DEVICE(obj); + RegisterInfoArray *reg_array; + + memory_region_init(&s->iomem, obj, TYPE_XLNX_ZYNQMP_IOMODULE_PIT, + XLNX_ZYNQMP_IOMODULE_PIT_R_MAX * 4); + reg_array =3D + register_init_block32(DEVICE(obj), xlnx_iomod_pit_regs_info, + ARRAY_SIZE(xlnx_iomod_pit_regs_info), + s->regs_info, s->regs, + &xlnx_iomod_pit_ops, + XLNX_ZYNQMP_IOMODULE_PIT_ERR_DEBUG, + XLNX_ZYNQMP_IOMODULE_PIT_R_MAX * 4); + memory_region_add_subregion(&s->iomem, + 0x0, + ®_array->mem); + sysbus_init_mmio(sbd, &s->iomem); + sysbus_init_irq(sbd, &s->irq); +} + +static const VMStateDescription vmstate_xlnx_iomod_pit =3D { + .name =3D TYPE_XLNX_ZYNQMP_IOMODULE_PIT, + .version_id =3D 1, + .minimum_version_id =3D 1, + .fields =3D (VMStateField[]) { + VMSTATE_END_OF_LIST(), + } +}; + +static Property xlnx_iomod_pit_properties[] =3D { + DEFINE_PROP_UINT32("frequency", XlnxPMUPIT, frequency, 66000000), + DEFINE_PROP_END_OF_LIST(), +}; + +static void xlnx_iomod_pit_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc =3D DEVICE_CLASS(klass); + + dc->reset =3D xlnx_iomod_pit_reset; + dc->realize =3D xlnx_iomod_pit_realize; + dc->props =3D xlnx_iomod_pit_properties; + dc->vmsd =3D &vmstate_xlnx_iomod_pit; +} + +static const TypeInfo xlnx_iomod_pit_info =3D { + .name =3D TYPE_XLNX_ZYNQMP_IOMODULE_PIT, + .parent =3D TYPE_SYS_BUS_DEVICE, + .instance_size =3D sizeof(XlnxPMUPIT), + .class_init =3D xlnx_iomod_pit_class_init, + .instance_init =3D xlnx_iomod_pit_init, +}; + +static void xlnx_iomod_pit_register_types(void) +{ + type_register_static(&xlnx_iomod_pit_info); +} + +type_init(xlnx_iomod_pit_register_types) diff --git a/hw/timer/Makefile.objs b/hw/timer/Makefile.objs index 8c19eac3b6..805c480cad 100644 --- a/hw/timer/Makefile.objs +++ b/hw/timer/Makefile.objs @@ -43,3 +43,5 @@ common-obj-$(CONFIG_ASPEED_SOC) +=3D aspeed_timer.o common-obj-$(CONFIG_SUN4V_RTC) +=3D sun4v-rtc.o common-obj-$(CONFIG_CMSDK_APB_TIMER) +=3D cmsdk-apb-timer.o common-obj-$(CONFIG_MSF2) +=3D mss-timer.o + +common-obj-$(CONFIG_XLNX_ZYNQMP) +=3D xlnx-pmu-iomod-pit.o --=20 2.14.1 From nobody Thu May 2 13:52:16 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Ip=[149.199.60.100]; Helo=[xsj-pvapsmtpgw02] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM2PR02MB1338 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 2a01:111:f400:fe48::617 Subject: [Qemu-devel] [PATCH v1 2/2] xlnx-zynqmp-pmu: Connect the PMU IOMOD PIT devices X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alistair23@gmail.com, alistair.francis@xilinx.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZohoMail: RDKM_2 RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Signed-off-by: Alistair Francis --- hw/microblaze/xlnx-zynqmp-pmu.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/hw/microblaze/xlnx-zynqmp-pmu.c b/hw/microblaze/xlnx-zynqmp-pm= u.c index 999a5657cf..f466c56e45 100644 --- a/hw/microblaze/xlnx-zynqmp-pmu.c +++ b/hw/microblaze/xlnx-zynqmp-pmu.c @@ -26,6 +26,7 @@ =20 #include "hw/intc/xlnx-zynqmp-ipi.h" #include "hw/intc/xlnx-pmu-iomod-intc.h" +#include "hw/timer/xlnx-pmu-iomod-pit.h" =20 /* Define the PMU device */ =20 @@ -40,6 +41,7 @@ #define XLNX_ZYNQMP_PMU_INTC_ADDR 0xFFD40000 =20 #define XLNX_ZYNQMP_PMU_NUM_IPIS 4 +#define XLNX_ZYNQMP_PMU_NUM_PITS 4 =20 static const uint64_t ipi_addr[XLNX_ZYNQMP_PMU_NUM_IPIS] =3D { 0xFF340000, 0xFF350000, 0xFF360000, 0xFF370000, @@ -48,6 +50,13 @@ static const uint64_t ipi_irq[XLNX_ZYNQMP_PMU_NUM_IPIS] = =3D { 19, 20, 21, 22, }; =20 +static const uint64_t pit_addr[XLNX_ZYNQMP_PMU_NUM_PITS] =3D { + 0xFFD40040, 0xFFD40050, 0xFFD40060, 0xFFD40070, +}; +static const uint64_t pit_irq[XLNX_ZYNQMP_PMU_NUM_PITS] =3D { + 3, 4, 5, 6, +}; + typedef struct XlnxZynqMPPMUSoCState { /*< private >*/ DeviceState parent_obj; @@ -147,7 +156,9 @@ static void xlnx_zynqmp_pmu_init(MachineState *machine) MemoryRegion *pmu_rom =3D g_new(MemoryRegion, 1); MemoryRegion *pmu_ram =3D g_new(MemoryRegion, 1); XlnxZynqMPIPI *ipi[XLNX_ZYNQMP_PMU_NUM_IPIS]; + XlnxPMUPIT *pit[XLNX_ZYNQMP_PMU_NUM_PITS]; qemu_irq irq[32]; + qemu_irq hit_in; int i; =20 /* Create the ROM */ @@ -186,6 +197,30 @@ static void xlnx_zynqmp_pmu_init(MachineState *machine) sysbus_connect_irq(SYS_BUS_DEVICE(ipi[i]), 0, irq[ipi_irq[i]]); } =20 + /* Create and connect the IOMOD PIT devices */ + for (i =3D 0; i < XLNX_ZYNQMP_PMU_NUM_PITS; i++) { + pit[i] =3D g_new0(XlnxPMUPIT, 1); + object_initialize(pit[i], sizeof(XlnxPMUPIT), TYPE_XLNX_ZYNQMP_IOM= ODULE_PIT); + qdev_set_parent_bus(DEVICE(pit[i]), sysbus_get_default()); + } + + for (i =3D 0; i < XLNX_ZYNQMP_PMU_NUM_PITS; i++) { + object_property_set_bool(OBJECT(pit[i]), true, "realized", + &error_abort); + sysbus_mmio_map(SYS_BUS_DEVICE(pit[i]), 0, pit_addr[i]); + sysbus_connect_irq(SYS_BUS_DEVICE(pit[i]), 0, irq[pit_irq[i]]); + } + + /* PIT1 hits into PIT0 */ + hit_in =3D qdev_get_gpio_in_named(DEVICE(pit[0]), "ps_hit_in", 0); + qdev_connect_gpio_out_named(DEVICE(pit[1]), "ps_hit_out", 0, hit_in); + + /* PIT3 hits into PIT2 */ + hit_in =3D qdev_get_gpio_in_named(DEVICE(pit[2]), "ps_hit_in", 0); + qdev_connect_gpio_out_named(DEVICE(pit[3]), "ps_hit_out", 0, hit_in); + + /* TODO: PIT0 and PIT2 "ps_config" GPIO goes to The GPO1 device. */ + /* Load the kernel */ microblaze_load_kernel(&pmu->cpu, XLNX_ZYNQMP_PMU_RAM_ADDR, machine->ram_size, --=20 2.14.1