[PATCH v1 2/2] sifive_u: Connect the SiFive PWM device

[Alistair Francis]

Signed-off-by: Alistair Francis <alistair.fran...@wdc.com>
---
 include/hw/riscv/sifive_u.h | 14 +++++++++++++-
 hw/riscv/sifive_u.c         | 23 ++++++++++++++++++++++-
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/include/hw/riscv/sifive_u.h b/include/hw/riscv/sifive_u.h
index 2656b39808..6e0779562d 100644
--- a/include/hw/riscv/sifive_u.h
+++ b/include/hw/riscv/sifive_u.h
@@ -27,6 +27,7 @@
 #include "hw/misc/sifive_u_otp.h"
 #include "hw/misc/sifive_u_prci.h"
 #include "hw/ssi/sifive_spi.h"
+#include "hw/timer/sifive_u_pwm.h"
 
 #define TYPE_RISCV_U_SOC "riscv.sifive.u.soc"
 #define RISCV_U_SOC(obj) \
@@ -49,6 +50,7 @@ typedef struct SiFiveUSoCState {
     SiFiveSPIState spi0;
     SiFiveSPIState spi2;
     CadenceGEMState gem;
+    SiFiveUPwmState pwm[2];
 
     uint32_t serial;
     char *cpu_type;
@@ -92,7 +94,9 @@ enum {
     SIFIVE_U_DEV_FLASH0,
     SIFIVE_U_DEV_DRAM,
     SIFIVE_U_DEV_GEM,
-    SIFIVE_U_DEV_GEM_MGMT
+    SIFIVE_U_DEV_GEM_MGMT,
+    SIFIVE_U_DEV_PWM0,
+    SIFIVE_U_DEV_PWM1
 };
 
 enum {
@@ -126,6 +130,14 @@ enum {
     SIFIVE_U_PDMA_IRQ5 = 28,
     SIFIVE_U_PDMA_IRQ6 = 29,
     SIFIVE_U_PDMA_IRQ7 = 30,
+    SIFIVE_U_DEV_PWM0_0 = 42,
+    SIFIVE_U_DEV_PWM0_1 = 43,
+    SIFIVE_U_DEV_PWM0_2 = 44,
+    SIFIVE_U_DEV_PWM0_3 = 45,
+    SIFIVE_U_DEV_PWM1_0 = 46,
+    SIFIVE_U_DEV_PWM1_1 = 47,
+    SIFIVE_U_DEV_PWM1_2 = 48,
+    SIFIVE_U_DEV_PWM1_3 = 49,
     SIFIVE_U_QSPI0_IRQ = 51,
     SIFIVE_U_GEM_IRQ = 53
 };
diff --git a/hw/riscv/sifive_u.c b/hw/riscv/sifive_u.c
index 7b59942369..ba36a91ef8 100644
--- a/hw/riscv/sifive_u.c
+++ b/hw/riscv/sifive_u.c
@@ -74,6 +74,8 @@ static const MemMapEntry sifive_u_memmap[] = {
     [SIFIVE_U_DEV_PRCI] =     { 0x10000000,     0x1000 },
     [SIFIVE_U_DEV_UART0] =    { 0x10010000,     0x1000 },
     [SIFIVE_U_DEV_UART1] =    { 0x10011000,     0x1000 },
+    [SIFIVE_U_DEV_PWM0] =     { 0x10020000,     0x1000 },
+    [SIFIVE_U_DEV_PWM1] =     { 0x10021000,     0x1000 },
     [SIFIVE_U_DEV_QSPI0] =    { 0x10040000,     0x1000 },
     [SIFIVE_U_DEV_QSPI2] =    { 0x10050000,     0x1000 },
     [SIFIVE_U_DEV_GPIO] =     { 0x10060000,     0x1000 },
@@ -757,6 +759,8 @@ static void sifive_u_soc_instance_init(Object *obj)
     object_initialize_child(obj, "pdma", &s->dma, TYPE_SIFIVE_PDMA);
     object_initialize_child(obj, "spi0", &s->spi0, TYPE_SIFIVE_SPI);
     object_initialize_child(obj, "spi2", &s->spi2, TYPE_SIFIVE_SPI);
+    object_initialize_child(obj, "pwm0", &s->pwm[0], TYPE_SIFIVE_U_PWM);
+    object_initialize_child(obj, "pwm1", &s->pwm[1], TYPE_SIFIVE_U_PWM);
 }
 
 static void sifive_u_soc_realize(DeviceState *dev, Error **errp)
@@ -769,7 +773,7 @@ static void sifive_u_soc_realize(DeviceState *dev, Error 
**errp)
     MemoryRegion *l2lim_mem = g_new(MemoryRegion, 1);
     char *plic_hart_config;
     size_t plic_hart_config_len;
-    int i;
+    int i, j;
     NICInfo *nd = &nd_table[0];
 
     qdev_prop_set_uint32(DEVICE(&s->u_cpus), "num-harts", ms->smp.cpus - 1);
@@ -896,6 +900,23 @@ static void sifive_u_soc_realize(DeviceState *dev, Error 
**errp)
     sysbus_connect_irq(SYS_BUS_DEVICE(&s->gem), 0,
                        qdev_get_gpio_in(DEVICE(s->plic), SIFIVE_U_GEM_IRQ));
 
+    /* PWM */
+    for (i = 0; i < 2; i++) {
+        if (!sysbus_realize(SYS_BUS_DEVICE(&s->pwm[i]), errp)) {
+            return;
+        }
+        sysbus_mmio_map(SYS_BUS_DEVICE(&s->pwm[i]), 0,
+                                memmap[SIFIVE_U_DEV_PWM0].base + (0x1000 * i));
+
+        /* Connect PWM interrupts to the PLIC */
+        for (j = 0; j < SIFIVE_U_PWM_IRQS; j++) {
+            sysbus_connect_irq(SYS_BUS_DEVICE(&s->pwm[i]), j,
+                               qdev_get_gpio_in(DEVICE(s->plic),
+                                            SIFIVE_U_DEV_PWM0_0 +
+                                                (i * SIFIVE_PDMA_IRQS) + j));
+        }
+    }
+
     create_unimplemented_device("riscv.sifive.u.gem-mgmt",
         memmap[SIFIVE_U_DEV_GEM_MGMT].base, 
memmap[SIFIVE_U_DEV_GEM_MGMT].size);
 
-- 
2.31.0