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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-08-09 19:50:30 +0200 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-08-27 11:10:01 +0200 |
commit | 2340c646e6a5da658e114be2f721ff90853588d4 (patch) | |
tree | df9744d2344e71e8c5d1b75c3e1528bc474313fe /target/linux/brcm2708/patches-4.19/950-0541-vchiq-Add-36-bit-address-support.patch | |
parent | 81d0da118694feb874f992093063a2852285d194 (diff) | |
download | upstream-2340c646e6a5da658e114be2f721ff90853588d4.tar.gz upstream-2340c646e6a5da658e114be2f721ff90853588d4.tar.bz2 upstream-2340c646e6a5da658e114be2f721ff90853588d4.zip |
brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0541-vchiq-Add-36-bit-address-support.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0541-vchiq-Add-36-bit-address-support.patch | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0541-vchiq-Add-36-bit-address-support.patch b/target/linux/brcm2708/patches-4.19/950-0541-vchiq-Add-36-bit-address-support.patch deleted file mode 100644 index d19059ae57..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0541-vchiq-Add-36-bit-address-support.patch +++ /dev/null @@ -1,196 +0,0 @@ -From 2d12aba4b1475c04f247b96075ad1a7f65152a23 Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Thu, 1 Nov 2018 17:31:37 +0000 -Subject: [PATCH 541/725] 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; - }; - |