Merge patch series "Add virtio-mmio support to m68k virt machine"

Daniel Palmer <[email protected]> says:

Lets start making the m68k virt machine support useful.

First we need to fix some m68k endian issues.

Then allow virtio mmio driver instances to be created with
platform data and fix a minor endian issue.

Finally, add the code for the board to create the instances.

Link: https://lore.kernel.org/r/[email protected]

5 files changed, 31 insertions, 23 deletions

diff --git a/drivers/rtc/goldfish_rtc.c b/drivers/rtc/goldfish_rtc.c
index d2991ca6719..4892a63f8d8 100644
--- a/drivers/rtc/goldfish_rtc.c
+++ b/drivers/rtc/goldfish_rtc.c
@@ -40,8 +40,8 @@ static int goldfish_rtc_get(struct udevice *dev, struct rtc_time *time)
 	u64 time_low;
 	u64 now;
 
-	time_low = ioread32(base + GOLDFISH_TIME_LOW);
-	time_high = ioread32(base + GOLDFISH_TIME_HIGH);
+	time_low = __raw_readl(base + GOLDFISH_TIME_LOW);
+	time_high = __raw_readl(base + GOLDFISH_TIME_HIGH);
 	now = (time_high << 32) | time_low;
 
 	do_div(now, 1000000000U);
@@ -62,8 +62,8 @@ static int goldfish_rtc_set(struct udevice *dev, const struct rtc_time *time)
 		return -EINVAL;
 
 	now = rtc_mktime(time) * 1000000000ULL;
-	iowrite32(now >> 32, base + GOLDFISH_TIME_HIGH);
-	iowrite32(now, base + GOLDFISH_TIME_LOW);
+	__raw_writel(now >> 32, base + GOLDFISH_TIME_HIGH);
+	__raw_writel(now, base + GOLDFISH_TIME_LOW);
 
 	if (time->tm_isdst > 0)
 		priv->isdst = 1;
diff --git a/drivers/sysreset/sysreset_qemu_virt_ctrl.c b/drivers/sysreset/sysreset_qemu_virt_ctrl.c
index e7cacc9b6e9..ce15e776f8f 100644
--- a/drivers/sysreset/sysreset_qemu_virt_ctrl.c
+++ b/drivers/sysreset/sysreset_qemu_virt_ctrl.c
@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <qemu_virt_ctrl.h>
 #include <sysreset.h>
+#include <mapmem.h>
 #include <asm/io.h>
 #include <linux/err.h>
 
@@ -24,6 +25,7 @@
 static int qemu_virt_ctrl_request(struct udevice *dev, enum sysreset_t type)
 {
 	struct qemu_virt_ctrl_plat *plat = dev_get_plat(dev);
+	void __iomem *reg = map_sysmem(plat->reg + VIRT_CTRL_REG_CMD, 0x4);
 	u32 val;
 
 	switch (type) {
@@ -38,7 +40,7 @@ static int qemu_virt_ctrl_request(struct udevice *dev, enum sysreset_t type)
 		return -EPROTONOSUPPORT;
 	}
 
-	writel(val, plat->reg + VIRT_CTRL_REG_CMD);
+	__raw_writel(val, reg);
 
 	return -EINPROGRESS;
 }
diff --git a/drivers/timer/goldfish_timer.c b/drivers/timer/goldfish_timer.c
index 70673bbd93c..91277d7932a 100644
--- a/drivers/timer/goldfish_timer.c
+++ b/drivers/timer/goldfish_timer.c
@@ -31,8 +31,8 @@ static u64 goldfish_timer_get_count(struct udevice *dev)
 	 * We must read LOW before HIGH to latch the high 32-bit value
 	 * and ensure a consistent 64-bit timestamp.
 	 */
-	low = readl(priv->base + TIMER_TIME_LOW);
-	high = readl(priv->base + TIMER_TIME_HIGH);
+	low = __raw_readl(priv->base + TIMER_TIME_LOW);
+	high = __raw_readl(priv->base + TIMER_TIME_HIGH);
 
 	time = ((u64)high << 32) | low;
 
diff --git a/drivers/virtio/virtio_blk.c b/drivers/virtio/virtio_blk.c
index 45fb596a330..94968ef1c75 100644
--- a/drivers/virtio/virtio_blk.c
+++ b/drivers/virtio/virtio_blk.c
@@ -231,14 +231,11 @@ static int virtio_blk_bind(struct udevice *dev)
 		return devnum;
 	desc->devnum = devnum;
 	desc->part_type = PART_TYPE_UNKNOWN;
-	/*
-	 * virtio mmio transport supplies string identification for us,
-	 * while pci trnasport uses a 2-byte subvendor value.
-	 */
-	if (uc_priv->vendor >> 16)
-		sprintf(desc->vendor, "%s", (char *)&uc_priv->vendor);
+
+	if (uc_priv->vendor == VIRTIO_VENDOR_QEMU)
+		strcpy(desc->vendor, "QEMU");
 	else
-		sprintf(desc->vendor, "%04x", uc_priv->vendor);
+		sprintf(desc->vendor, "%08x", uc_priv->vendor);
 	desc->bdev = dev;
 
 	/* Indicate what driver features we support */
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index d90d8309f99..975f98cd9e5 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -12,6 +12,7 @@
 #include <virtio_types.h>
 #include <virtio.h>
 #include <virtio_ring.h>
+#include <virtio_mmio.h>
 #include <linux/bug.h>
 #include <linux/compat.h>
 #include <linux/err.h>
@@ -335,21 +336,28 @@ static int virtio_mmio_notify(struct udevice *udev, struct virtqueue *vq)
 
 static int virtio_mmio_of_to_plat(struct udevice *udev)
 {
-	struct virtio_mmio_priv *priv = dev_get_priv(udev);
+	struct virtio_mmio_plat *plat = dev_get_plat(udev);
+	fdt_addr_t addr;
+
+	addr = dev_read_addr(udev);
 
-	priv->base = (void __iomem *)(ulong)dev_read_addr(udev);
-	if (priv->base == (void __iomem *)FDT_ADDR_T_NONE)
+	if (addr == FDT_ADDR_T_NONE)
 		return -EINVAL;
 
+	plat->base = addr;
+
 	return 0;
 }
 
 static int virtio_mmio_probe(struct udevice *udev)
 {
+	struct virtio_mmio_plat *plat = dev_get_plat(udev);
 	struct virtio_mmio_priv *priv = dev_get_priv(udev);
 	struct virtio_dev_priv *uc_priv = dev_get_uclass_priv(udev);
 	u32 magic;
 
+	priv->base = (void __iomem *)(uintptr_t)plat->base;
+
 	/* Check magic value */
 	magic = readl(priv->base + VIRTIO_MMIO_MAGIC_VALUE);
 	if (magic != ('v' | 'i' << 8 | 'r' << 16 | 't' << 24)) {
@@ -405,11 +413,12 @@ static const struct udevice_id virtio_mmio_ids[] = {
 };
 
 U_BOOT_DRIVER(virtio_mmio) = {
-	.name	= "virtio-mmio",
-	.id	= UCLASS_VIRTIO,
-	.of_match = virtio_mmio_ids,
-	.ops	= &virtio_mmio_ops,
-	.probe	= virtio_mmio_probe,
+	.name       = "virtio-mmio",
+	.id         = UCLASS_VIRTIO,
+	.of_match   = virtio_mmio_ids,
+	.ops        = &virtio_mmio_ops,
+	.probe      = virtio_mmio_probe,
 	.of_to_plat = virtio_mmio_of_to_plat,
-	.priv_auto	= sizeof(struct virtio_mmio_priv),
+	.priv_auto  = sizeof(struct virtio_mmio_priv),
+	.plat_auto  = sizeof(struct virtio_mmio_plat),
 };