Adding upstream version 1:7.2+dfsg.upstream/1%7.2+dfsgupstream

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 441 insertions, 0 deletions

diff --git a/hw/misc/bcm2835_property.c b/hw/misc/bcm2835_property.c
new file mode 100644
index 00000000..890ae7ba
--- /dev/null
+++ b/hw/misc/bcm2835_property.c
@@ -0,0 +1,441 @@
+/*
+ * Raspberry Pi emulation (c) 2012 Gregory Estrade
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "hw/misc/bcm2835_property.h"
+#include "hw/qdev-properties.h"
+#include "migration/vmstate.h"
+#include "hw/irq.h"
+#include "hw/misc/bcm2835_mbox_defs.h"
+#include "sysemu/dma.h"
+#include "qemu/log.h"
+#include "qemu/module.h"
+#include "trace.h"
+
+/* https://github.com/raspberrypi/firmware/wiki/Mailbox-property-interface */
+
+static void bcm2835_property_mbox_push(BCM2835PropertyState *s, uint32_t value)
+{
+    uint32_t tag;
+    uint32_t bufsize;
+    uint32_t tot_len;
+    size_t resplen;
+    uint32_t tmp;
+    int n;
+    uint32_t offset, length, color;
+
+    /*
+     * Copy the current state of the framebuffer config; we will update
+     * this copy as we process tags and then ask the framebuffer to use
+     * it at the end.
+     */
+    BCM2835FBConfig fbconfig = s->fbdev->config;
+    bool fbconfig_updated = false;
+
+    value &= ~0xf;
+
+    s->addr = value;
+
+    tot_len = ldl_le_phys(&s->dma_as, value);
+
+    /* @(addr + 4) : Buffer response code */
+    value = s->addr + 8;
+    while (value + 8 <= s->addr + tot_len) {
+        tag = ldl_le_phys(&s->dma_as, value);
+        bufsize = ldl_le_phys(&s->dma_as, value + 4);
+        /* @(value + 8) : Request/response indicator */
+        resplen = 0;
+        switch (tag) {
+        case 0x00000000: /* End tag */
+            break;
+        case 0x00000001: /* Get firmware revision */
+            stl_le_phys(&s->dma_as, value + 12, 346337);
+            resplen = 4;
+            break;
+        case 0x00010001: /* Get board model */
+            qemu_log_mask(LOG_UNIMP,
+                          "bcm2835_property: 0x%08x get board model NYI\n",
+                          tag);
+            resplen = 4;
+            break;
+        case 0x00010002: /* Get board revision */
+            stl_le_phys(&s->dma_as, value + 12, s->board_rev);
+            resplen = 4;
+            break;
+        case 0x00010003: /* Get board MAC address */
+            resplen = sizeof(s->macaddr.a);
+            dma_memory_write(&s->dma_as, value + 12, s->macaddr.a, resplen,
+                             MEMTXATTRS_UNSPECIFIED);
+            break;
+        case 0x00010004: /* Get board serial */
+            qemu_log_mask(LOG_UNIMP,
+                          "bcm2835_property: 0x%08x get board serial NYI\n",
+                          tag);
+            resplen = 8;
+            break;
+        case 0x00010005: /* Get ARM memory */
+            /* base */
+            stl_le_phys(&s->dma_as, value + 12, 0);
+            /* size */
+            stl_le_phys(&s->dma_as, value + 16, s->fbdev->vcram_base);
+            resplen = 8;
+            break;
+        case 0x00010006: /* Get VC memory */
+            /* base */
+            stl_le_phys(&s->dma_as, value + 12, s->fbdev->vcram_base);
+            /* size */
+            stl_le_phys(&s->dma_as, value + 16, s->fbdev->vcram_size);
+            resplen = 8;
+            break;
+        case 0x00028001: /* Set power state */
+            /* Assume that whatever device they asked for exists,
+             * and we'll just claim we set it to the desired state
+             */
+            tmp = ldl_le_phys(&s->dma_as, value + 16);
+            stl_le_phys(&s->dma_as, value + 16, (tmp & 1));
+            resplen = 8;
+            break;
+
+        /* Clocks */
+
+        case 0x00030001: /* Get clock state */
+            stl_le_phys(&s->dma_as, value + 16, 0x1);
+            resplen = 8;
+            break;
+
+        case 0x00038001: /* Set clock state */
+            qemu_log_mask(LOG_UNIMP,
+                          "bcm2835_property: 0x%08x set clock state NYI\n",
+                          tag);
+            resplen = 8;
+            break;
+
+        case 0x00030002: /* Get clock rate */
+        case 0x00030004: /* Get max clock rate */
+        case 0x00030007: /* Get min clock rate */
+            switch (ldl_le_phys(&s->dma_as, value + 12)) {
+            case 1: /* EMMC */
+                stl_le_phys(&s->dma_as, value + 16, 50000000);
+                break;
+            case 2: /* UART */
+                stl_le_phys(&s->dma_as, value + 16, 3000000);
+                break;
+            default:
+                stl_le_phys(&s->dma_as, value + 16, 700000000);
+                break;
+            }
+            resplen = 8;
+            break;
+
+        case 0x00038002: /* Set clock rate */
+        case 0x00038004: /* Set max clock rate */
+        case 0x00038007: /* Set min clock rate */
+            qemu_log_mask(LOG_UNIMP,
+                          "bcm2835_property: 0x%08x set clock rate NYI\n",
+                          tag);
+            resplen = 8;
+            break;
+
+        /* Temperature */
+
+        case 0x00030006: /* Get temperature */
+            stl_le_phys(&s->dma_as, value + 16, 25000);
+            resplen = 8;
+            break;
+
+        case 0x0003000A: /* Get max temperature */
+            stl_le_phys(&s->dma_as, value + 16, 99000);
+            resplen = 8;
+            break;
+
+        /* Frame buffer */
+
+        case 0x00040001: /* Allocate buffer */
+            stl_le_phys(&s->dma_as, value + 12, fbconfig.base);
+            stl_le_phys(&s->dma_as, value + 16,
+                        bcm2835_fb_get_size(&fbconfig));
+            resplen = 8;
+            break;
+        case 0x00048001: /* Release buffer */
+            resplen = 0;
+            break;
+        case 0x00040002: /* Blank screen */
+            resplen = 4;
+            break;
+        case 0x00044003: /* Test physical display width/height */
+        case 0x00044004: /* Test virtual display width/height */
+            resplen = 8;
+            break;
+        case 0x00048003: /* Set physical display width/height */
+            fbconfig.xres = ldl_le_phys(&s->dma_as, value + 12);
+            fbconfig.yres = ldl_le_phys(&s->dma_as, value + 16);
+            bcm2835_fb_validate_config(&fbconfig);
+            fbconfig_updated = true;
+            /* fall through */
+        case 0x00040003: /* Get physical display width/height */
+            stl_le_phys(&s->dma_as, value + 12, fbconfig.xres);
+            stl_le_phys(&s->dma_as, value + 16, fbconfig.yres);
+            resplen = 8;
+            break;
+        case 0x00048004: /* Set virtual display width/height */
+            fbconfig.xres_virtual = ldl_le_phys(&s->dma_as, value + 12);
+            fbconfig.yres_virtual = ldl_le_phys(&s->dma_as, value + 16);
+            bcm2835_fb_validate_config(&fbconfig);
+            fbconfig_updated = true;
+            /* fall through */
+        case 0x00040004: /* Get virtual display width/height */
+            stl_le_phys(&s->dma_as, value + 12, fbconfig.xres_virtual);
+            stl_le_phys(&s->dma_as, value + 16, fbconfig.yres_virtual);
+            resplen = 8;
+            break;
+        case 0x00044005: /* Test depth */
+            resplen = 4;
+            break;
+        case 0x00048005: /* Set depth */
+            fbconfig.bpp = ldl_le_phys(&s->dma_as, value + 12);
+            bcm2835_fb_validate_config(&fbconfig);
+            fbconfig_updated = true;
+            /* fall through */
+        case 0x00040005: /* Get depth */
+            stl_le_phys(&s->dma_as, value + 12, fbconfig.bpp);
+            resplen = 4;
+            break;
+        case 0x00044006: /* Test pixel order */
+            resplen = 4;
+            break;
+        case 0x00048006: /* Set pixel order */
+            fbconfig.pixo = ldl_le_phys(&s->dma_as, value + 12);
+            bcm2835_fb_validate_config(&fbconfig);
+            fbconfig_updated = true;
+            /* fall through */
+        case 0x00040006: /* Get pixel order */
+            stl_le_phys(&s->dma_as, value + 12, fbconfig.pixo);
+            resplen = 4;
+            break;
+        case 0x00044007: /* Test pixel alpha */
+            resplen = 4;
+            break;
+        case 0x00048007: /* Set alpha */
+            fbconfig.alpha = ldl_le_phys(&s->dma_as, value + 12);
+            bcm2835_fb_validate_config(&fbconfig);
+            fbconfig_updated = true;
+            /* fall through */
+        case 0x00040007: /* Get alpha */
+            stl_le_phys(&s->dma_as, value + 12, fbconfig.alpha);
+            resplen = 4;
+            break;
+        case 0x00040008: /* Get pitch */
+            stl_le_phys(&s->dma_as, value + 12,
+                        bcm2835_fb_get_pitch(&fbconfig));
+            resplen = 4;
+            break;
+        case 0x00044009: /* Test virtual offset */
+            resplen = 8;
+            break;
+        case 0x00048009: /* Set virtual offset */
+            fbconfig.xoffset = ldl_le_phys(&s->dma_as, value + 12);
+            fbconfig.yoffset = ldl_le_phys(&s->dma_as, value + 16);
+            bcm2835_fb_validate_config(&fbconfig);
+            fbconfig_updated = true;
+            /* fall through */
+        case 0x00040009: /* Get virtual offset */
+            stl_le_phys(&s->dma_as, value + 12, fbconfig.xoffset);
+            stl_le_phys(&s->dma_as, value + 16, fbconfig.yoffset);
+            resplen = 8;
+            break;
+        case 0x0004000a: /* Get/Test/Set overscan */
+        case 0x0004400a:
+        case 0x0004800a:
+            stl_le_phys(&s->dma_as, value + 12, 0);
+            stl_le_phys(&s->dma_as, value + 16, 0);
+            stl_le_phys(&s->dma_as, value + 20, 0);
+            stl_le_phys(&s->dma_as, value + 24, 0);
+            resplen = 16;
+            break;
+        case 0x0004800b: /* Set palette */
+            offset = ldl_le_phys(&s->dma_as, value + 12);
+            length = ldl_le_phys(&s->dma_as, value + 16);
+            n = 0;
+            while (n < length - offset) {
+                color = ldl_le_phys(&s->dma_as, value + 20 + (n << 2));
+                stl_le_phys(&s->dma_as,
+                            s->fbdev->vcram_base + ((offset + n) << 2), color);
+                n++;
+            }
+            stl_le_phys(&s->dma_as, value + 12, 0);
+            resplen = 4;
+            break;
+        case 0x00040013: /* Get number of displays */
+            stl_le_phys(&s->dma_as, value + 12, 1);
+            resplen = 4;
+            break;
+
+        case 0x00060001: /* Get DMA channels */
+            /* channels 2-5 */
+            stl_le_phys(&s->dma_as, value + 12, 0x003C);
+            resplen = 4;
+            break;
+
+        case 0x00050001: /* Get command line */
+            resplen = 0;
+            break;
+
+        default:
+            qemu_log_mask(LOG_UNIMP,
+                          "bcm2835_property: unhandled tag 0x%08x\n", tag);
+            break;
+        }
+
+        trace_bcm2835_mbox_property(tag, bufsize, resplen);
+        if (tag == 0) {
+            break;
+        }
+
+        stl_le_phys(&s->dma_as, value + 8, (1 << 31) | resplen);
+        value += bufsize + 12;
+    }
+
+    /* Reconfigure framebuffer if required */
+    if (fbconfig_updated) {
+        bcm2835_fb_reconfigure(s->fbdev, &fbconfig);
+    }
+
+    /* Buffer response code */
+    stl_le_phys(&s->dma_as, s->addr + 4, (1 << 31));
+}
+
+static uint64_t bcm2835_property_read(void *opaque, hwaddr offset,
+                                      unsigned size)
+{
+    BCM2835PropertyState *s = opaque;
+    uint32_t res = 0;
+
+    switch (offset) {
+    case MBOX_AS_DATA:
+        res = MBOX_CHAN_PROPERTY | s->addr;
+        s->pending = false;
+        qemu_set_irq(s->mbox_irq, 0);
+        break;
+
+    case MBOX_AS_PENDING:
+        res = s->pending;
+        break;
+
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset %"HWADDR_PRIx"\n",
+                      __func__, offset);
+        return 0;
+    }
+
+    return res;
+}
+
+static void bcm2835_property_write(void *opaque, hwaddr offset,
+                                   uint64_t value, unsigned size)
+{
+    BCM2835PropertyState *s = opaque;
+
+    switch (offset) {
+    case MBOX_AS_DATA:
+        /* bcm2835_mbox should check our pending status before pushing */
+        assert(!s->pending);
+        s->pending = true;
+        bcm2835_property_mbox_push(s, value);
+        qemu_set_irq(s->mbox_irq, 1);
+        break;
+
+    default:
+        qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset %"HWADDR_PRIx"\n",
+                      __func__, offset);
+        return;
+    }
+}
+
+static const MemoryRegionOps bcm2835_property_ops = {
+    .read = bcm2835_property_read,
+    .write = bcm2835_property_write,
+    .endianness = DEVICE_NATIVE_ENDIAN,
+    .valid.min_access_size = 4,
+    .valid.max_access_size = 4,
+};
+
+static const VMStateDescription vmstate_bcm2835_property = {
+    .name = TYPE_BCM2835_PROPERTY,
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .fields      = (VMStateField[]) {
+        VMSTATE_MACADDR(macaddr, BCM2835PropertyState),
+        VMSTATE_UINT32(addr, BCM2835PropertyState),
+        VMSTATE_BOOL(pending, BCM2835PropertyState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static void bcm2835_property_init(Object *obj)
+{
+    BCM2835PropertyState *s = BCM2835_PROPERTY(obj);
+
+    memory_region_init_io(&s->iomem, OBJECT(s), &bcm2835_property_ops, s,
+                          TYPE_BCM2835_PROPERTY, 0x10);
+    sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->iomem);
+    sysbus_init_irq(SYS_BUS_DEVICE(s), &s->mbox_irq);
+}
+
+static void bcm2835_property_reset(DeviceState *dev)
+{
+    BCM2835PropertyState *s = BCM2835_PROPERTY(dev);
+
+    s->pending = false;
+}
+
+static void bcm2835_property_realize(DeviceState *dev, Error **errp)
+{
+    BCM2835PropertyState *s = BCM2835_PROPERTY(dev);
+    Object *obj;
+
+    obj = object_property_get_link(OBJECT(dev), "fb", &error_abort);
+    s->fbdev = BCM2835_FB(obj);
+
+    obj = object_property_get_link(OBJECT(dev), "dma-mr", &error_abort);
+    s->dma_mr = MEMORY_REGION(obj);
+    address_space_init(&s->dma_as, s->dma_mr, TYPE_BCM2835_PROPERTY "-memory");
+
+    /* TODO: connect to MAC address of USB NIC device, once we emulate it */
+    qemu_macaddr_default_if_unset(&s->macaddr);
+
+    bcm2835_property_reset(dev);
+}
+
+static Property bcm2835_property_props[] = {
+    DEFINE_PROP_UINT32("board-rev", BCM2835PropertyState, board_rev, 0),
+    DEFINE_PROP_END_OF_LIST()
+};
+
+static void bcm2835_property_class_init(ObjectClass *klass, void *data)
+{
+    DeviceClass *dc = DEVICE_CLASS(klass);
+
+    device_class_set_props(dc, bcm2835_property_props);
+    dc->realize = bcm2835_property_realize;
+    dc->vmsd = &vmstate_bcm2835_property;
+}
+
+static const TypeInfo bcm2835_property_info = {
+    .name          = TYPE_BCM2835_PROPERTY,
+    .parent        = TYPE_SYS_BUS_DEVICE,
+    .instance_size = sizeof(BCM2835PropertyState),
+    .class_init    = bcm2835_property_class_init,
+    .instance_init = bcm2835_property_init,
+};
+
+static void bcm2835_property_register_types(void)
+{
+    type_register_static(&bcm2835_property_info);
+}
+
+type_init(bcm2835_property_register_types)