brcm2708: update to latest patches from RPi foundation

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 0 insertions, 196 deletions

diff --git a/target/linux/brcm2708/patches-4.19/950-0539-vchiq-Add-36-bit-address-support.patch b/target/linux/brcm2708/patches-4.19/950-0539-vchiq-Add-36-bit-address-support.patch
deleted file mode 100644
index 2860b307bd..0000000000
--- a/target/linux/brcm2708/patches-4.19/950-0539-vchiq-Add-36-bit-address-support.patch
+++ /dev/null
@@ -1,196 +0,0 @@
-From 2c52bddb08678377ba855256b3b5dc8aa7ee72f1 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Thu, 1 Nov 2018 17:31:37 +0000
-Subject: [PATCH 539/773] vchiq: Add 36-bit address support
-
-Conditional on a new compatible string, change the pagelist encoding
-such that the top 24 bits are the pfn, leaving 8 bits for run length
-(-1).
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- .../interface/vchiq_arm/vchiq_2835_arm.c      | 90 ++++++++++++++-----
- .../interface/vchiq_arm/vchiq_arm.c           |  6 ++
- .../interface/vchiq_arm/vchiq_arm.h           |  1 +
- 3 files changed, 75 insertions(+), 22 deletions(-)
-
---- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
-+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
-@@ -47,6 +47,8 @@
- #include <soc/bcm2835/raspberrypi-firmware.h>
- 
- #define TOTAL_SLOTS (VCHIQ_SLOT_ZERO_SLOTS + 2 * 32)
-+#define VC_SAFE(x) (g_use_36bit_addrs ? ((u32)(x) | 0xc0000000) : (u32)(x))
-+#define IS_VC_SAFE(x) (g_use_36bit_addrs ? !((x) & ~0x3fffffffull) : 1)
- 
- #include "vchiq_arm.h"
- #include "vchiq_connected.h"
-@@ -96,6 +98,7 @@ static void __iomem *g_regs;
-  */
- static unsigned int g_cache_line_size;
- static struct dma_pool *g_dma_pool;
-+static unsigned int g_use_36bit_addrs = 0;
- static unsigned int g_fragments_size;
- static char *g_fragments_base;
- static char *g_free_fragments;
-@@ -139,6 +142,8 @@ int vchiq_platform_init(struct platform_
- 	g_cache_line_size = drvdata->cache_line_size;
- 	g_fragments_size = 2 * g_cache_line_size;
- 
-+	g_use_36bit_addrs = (dev->dma_pfn_offset == 0);
-+
- 	/* Allocate space for the channels in coherent memory */
- 	slot_mem_size = PAGE_ALIGN(TOTAL_SLOTS * VCHIQ_SLOT_SIZE);
- 	frag_mem_size = PAGE_ALIGN(g_fragments_size * MAX_FRAGMENTS);
-@@ -150,14 +155,21 @@ int vchiq_platform_init(struct platform_
- 		return -ENOMEM;
- 	}
- 
-+	if (!IS_VC_SAFE(slot_phys)) {
-+		dev_err(dev, "allocated DMA memory %pad is not VC-safe\n",
-+			&slot_phys);
-+		return -ENOMEM;
-+	}
-+
- 	WARN_ON(((unsigned long)slot_mem & (PAGE_SIZE - 1)) != 0);
-+	channelbase = VC_SAFE(slot_phys);
- 
- 	vchiq_slot_zero = vchiq_init_slots(slot_mem, slot_mem_size);
- 	if (!vchiq_slot_zero)
- 		return -EINVAL;
- 
- 	vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_OFFSET_IDX] =
--		(int)slot_phys + slot_mem_size;
-+		channelbase + slot_mem_size;
- 	vchiq_slot_zero->platform_data[VCHIQ_PLATFORM_FRAGMENTS_COUNT_IDX] =
- 		MAX_FRAGMENTS;
- 
-@@ -193,7 +205,6 @@ int vchiq_platform_init(struct platform_
- 	}
- 
- 	/* Send the base address of the slots to VideoCore */
--	channelbase = slot_phys;
- 	err = rpi_firmware_property(fw, RPI_FIRMWARE_VCHIQ_INIT,
- 				    &channelbase, sizeof(channelbase));
- 	if (err || channelbase) {
-@@ -282,7 +293,7 @@ vchiq_prepare_bulk_data(VCHIQ_BULK_T *bu
- 		return VCHIQ_ERROR;
- 
- 	bulk->handle = memhandle;
--	bulk->data = (void *)(unsigned long)pagelistinfo->dma_addr;
-+	bulk->data = (void *)VC_SAFE(pagelistinfo->dma_addr);
- 
- 	/*
- 	 * Store the pagelistinfo address in remote_data,
-@@ -570,25 +581,60 @@ create_pagelist(char __user *buf, size_t
- 
- 	/* Combine adjacent blocks for performance */
- 	k = 0;
--	for_each_sg(scatterlist, sg, dma_buffers, i) {
--		u32 len = sg_dma_len(sg);
--		u32 addr = sg_dma_address(sg);
--
--		/* Note: addrs is the address + page_count - 1
--		 * The firmware expects blocks after the first to be page-
--		 * aligned and a multiple of the page size
--		 */
--		WARN_ON(len == 0);
--		WARN_ON(i && (i != (dma_buffers - 1)) && (len & ~PAGE_MASK));
--		WARN_ON(i && (addr & ~PAGE_MASK));
--		if (k > 0 &&
--		    ((addrs[k - 1] & PAGE_MASK) +
--		     (((addrs[k - 1] & ~PAGE_MASK) + 1) << PAGE_SHIFT))
--		    == (addr & PAGE_MASK))
--			addrs[k - 1] += ((len + PAGE_SIZE - 1) >> PAGE_SHIFT);
--		else
--			addrs[k++] = (addr & PAGE_MASK) |
--				(((len + PAGE_SIZE - 1) >> PAGE_SHIFT) - 1);
-+	if (g_use_36bit_addrs) {
-+		for_each_sg(scatterlist, sg, dma_buffers, i) {
-+			u32 len = sg_dma_len(sg);
-+			u64 addr = sg_dma_address(sg);
-+			u32 page_id = (u32)((addr >> 4) & ~0xff);
-+			u32 sg_pages = (len + PAGE_SIZE - 1) >> PAGE_SHIFT;
-+
-+			/* Note: addrs is the address + page_count - 1
-+			 * The firmware expects blocks after the first to be page-
-+			 * aligned and a multiple of the page size
-+			 */
-+			WARN_ON(len == 0);
-+			WARN_ON(i &&
-+				(i != (dma_buffers - 1)) && (len & ~PAGE_MASK));
-+			WARN_ON(i && (addr & ~PAGE_MASK));
-+			WARN_ON(upper_32_bits(addr) > 0xf);
-+			if (k > 0 &&
-+			    ((addrs[k - 1] & ~0xff) +
-+			     (((addrs[k - 1] & 0xff) + 1) << 8)
-+			     == page_id)) {
-+				u32 inc_pages = min(sg_pages,
-+						    0xff - (addrs[k - 1] & 0xff));
-+				addrs[k - 1] += inc_pages;
-+				page_id += inc_pages << 8;
-+				sg_pages -= inc_pages;
-+			}
-+			while (sg_pages) {
-+				u32 inc_pages = min(sg_pages, 0x100u);
-+				addrs[k++] = page_id | (inc_pages - 1);
-+				page_id += inc_pages << 8;
-+				sg_pages -= inc_pages;
-+			}
-+		}
-+	} else {
-+		for_each_sg(scatterlist, sg, dma_buffers, i) {
-+			u32 len = sg_dma_len(sg);
-+			u32 addr = VC_SAFE(sg_dma_address(sg));
-+			u32 new_pages = (len + PAGE_SIZE - 1) >> PAGE_SHIFT;
-+
-+			/* Note: addrs is the address + page_count - 1
-+			 * The firmware expects blocks after the first to be page-
-+			 * aligned and a multiple of the page size
-+			 */
-+			WARN_ON(len == 0);
-+			WARN_ON(i && (i != (dma_buffers - 1)) && (len & ~PAGE_MASK));
-+			WARN_ON(i && (addr & ~PAGE_MASK));
-+			if (k > 0 &&
-+			    ((addrs[k - 1] & PAGE_MASK) +
-+			     (((addrs[k - 1] & ~PAGE_MASK) + 1) << PAGE_SHIFT))
-+			    == (addr & PAGE_MASK))
-+				addrs[k - 1] += new_pages;
-+			else
-+				addrs[k++] = (addr & PAGE_MASK) | (new_pages - 1);
-+		}
- 	}
- 
- 	/* Partial cache lines (fragments) require special measures */
---- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
-+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
-@@ -181,6 +181,11 @@ static struct vchiq_drvdata bcm2836_drvd
- 	.cache_line_size = 64,
- };
- 
-+static struct vchiq_drvdata bcm2838_drvdata = {
-+	.cache_line_size = 64,
-+	.use_36bit_addrs = true,
-+};
-+
- static const char *const ioctl_names[] = {
- 	"CONNECT",
- 	"SHUTDOWN",
-@@ -3618,6 +3623,7 @@ vchiq_register_child(struct platform_dev
- static const struct of_device_id vchiq_of_match[] = {
- 	{ .compatible = "brcm,bcm2835-vchiq", .data = &bcm2835_drvdata },
- 	{ .compatible = "brcm,bcm2836-vchiq", .data = &bcm2836_drvdata },
-+	{ .compatible = "brcm,bcm2838-vchiq", .data = &bcm2838_drvdata },
- 	{},
- };
- MODULE_DEVICE_TABLE(of, vchiq_of_match);
---- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
-+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
-@@ -125,6 +125,7 @@ typedef struct vchiq_arm_state_struct {
- 
- struct vchiq_drvdata {
- 	const unsigned int cache_line_size;
-+	const bool use_36bit_addrs;
- 	struct rpi_firmware *fw;
- };
-