media: apple: isp: Support >32bit VAs for t602x

Signed-off-by: Asahi Lina <lina@asahilina.net>

Author: hoshinolina

drivers/media/platform/apple/isp/isp-drv.c

@@ -121,7 +121,8 @@ static int apple_isp_init_iommu(struct apple_isp *isp)
 		return err;
 	}
 
-	drm_mm_init(&isp->iovad, isp->fw.heap_top, vm_size - heap_base);
+	// FIXME: refactor this, maybe use regular iova stuff?
+	drm_mm_init(&isp->iovad, isp->fw.heap_top, vm_size - (heap_base & 0xffffffff));
 
 	return 0;
 }
@@ -137,6 +138,10 @@ static int apple_isp_probe(struct platform_device *pdev)
 	struct apple_isp *isp;
 	int err;
 
+	err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(42));
+	if (err)
+		return err;
+
 	isp = devm_kzalloc(dev, sizeof(*isp), GFP_KERNEL);
 	if (!isp)
 		return -ENOMEM;

drivers/media/platform/apple/isp/isp-fw.c

@@ -274,8 +274,8 @@ static int isp_firmware_boot_stage2(struct apple_isp *isp)
 	memset(&args, 0, sizeof(args));
 	args.ipc_iova = isp->ipc_surf->iova;
 	args.ipc_size = isp->ipc_surf->size;
-	args.shared_base = isp->fw.heap_top;
-	args.shared_size = 0x10000000UL - isp->fw.heap_top;
+	args.shared_base = isp->fw.heap_top & 0xffffffff;
+	args.shared_size = 0x10000000UL - args.shared_base;
 	args.extra_iova = isp->extra_surf->iova;
 	args.extra_size = isp->extra_surf->size;
 	args.platform_id = isp->hw->platform_id;
@@ -286,7 +286,7 @@ static int isp_firmware_boot_stage2(struct apple_isp *isp)
 	isp_iowrite(isp, args_iova, &args, sizeof(args));
 
 	isp_gpio_write32(isp, ISP_GPIO_0, args_iova);
-	isp_gpio_write32(isp, ISP_GPIO_1, 0x0);
+	isp_gpio_write32(isp, ISP_GPIO_1, args_iova >> 32);
 	wmb();
 
 	/* Wait for ISP_GPIO_7 to 0xf7fbdff9 -> 0x8042006 */
@@ -342,7 +342,8 @@ static void isp_free_channel_info(struct apple_isp *isp)
 
 static int isp_fill_channel_info(struct apple_isp *isp)
 {
-	u32 table_iova = isp_gpio_read32(isp, ISP_GPIO_0);
+	u64 table_iova = isp_gpio_read32(isp, ISP_GPIO_0) |
+		((u64)isp_gpio_read32(isp, ISP_GPIO_1)) << 32;
 
 	isp->ipc_chans = kcalloc(isp->num_ipc_chans,
 				 sizeof(struct isp_channel *), GFP_KERNEL);