mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-21 22:47:56 +00:00
6d3770501d
BMIPS_GET_CBR() returns an invalid address on some SoCs.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
(cherry picked from commit 62cdca25ed)
85 lines
2.3 KiB
Diff
85 lines
2.3 KiB
Diff
From 3e4c3863e0cfb8c2abdff6bb494ca69d3d2aed9c Mon Sep 17 00:00:00 2001
|
|
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
|
|
Date: Sat, 10 Jun 2023 17:01:40 +0200
|
|
Subject: [PATCH] mips: bmips: dma: fix CBR address
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
Some BCM63xx SoCs may return CBR address as 0.
|
|
|
|
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
|
|
---
|
|
arch/mips/bmips/dma.c | 12 ++++--------
|
|
arch/mips/bmips/setup.c | 11 ++++-------
|
|
2 files changed, 8 insertions(+), 15 deletions(-)
|
|
|
|
--- a/arch/mips/bmips/dma.c
|
|
+++ b/arch/mips/bmips/dma.c
|
|
@@ -64,11 +64,10 @@ phys_addr_t dma_to_phys(struct device *d
|
|
return dma_addr;
|
|
}
|
|
|
|
-bool bmips_rac_flush_disable;
|
|
+void __iomem *bmips_cbr_addr;
|
|
|
|
void arch_sync_dma_for_cpu_all(void)
|
|
{
|
|
- void __iomem *cbr = BMIPS_GET_CBR();
|
|
u32 cfg;
|
|
|
|
if (boot_cpu_type() != CPU_BMIPS3300 &&
|
|
@@ -76,13 +75,10 @@ void arch_sync_dma_for_cpu_all(void)
|
|
boot_cpu_type() != CPU_BMIPS4380)
|
|
return;
|
|
|
|
- if (unlikely(bmips_rac_flush_disable))
|
|
- return;
|
|
-
|
|
/* Flush stale data out of the readahead cache */
|
|
- cfg = __raw_readl(cbr + BMIPS_RAC_CONFIG);
|
|
- __raw_writel(cfg | 0x100, cbr + BMIPS_RAC_CONFIG);
|
|
- __raw_readl(cbr + BMIPS_RAC_CONFIG);
|
|
+ cfg = __raw_readl(bmips_cbr_addr + BMIPS_RAC_CONFIG);
|
|
+ __raw_writel(cfg | 0x100, bmips_cbr_addr + BMIPS_RAC_CONFIG);
|
|
+ __raw_readl(bmips_cbr_addr + BMIPS_RAC_CONFIG);
|
|
}
|
|
|
|
static int __init bmips_init_dma_ranges(void)
|
|
--- a/arch/mips/bmips/setup.c
|
|
+++ b/arch/mips/bmips/setup.c
|
|
@@ -89,7 +89,7 @@
|
|
|
|
#define DDR_CSEND_REG 0x8
|
|
|
|
-extern bool bmips_rac_flush_disable;
|
|
+extern void __iomem *bmips_cbr_addr;
|
|
|
|
static const unsigned long kbase = VMLINUX_LOAD_ADDRESS & 0xfff00000;
|
|
|
|
@@ -170,12 +170,6 @@ static void bcm6358_quirks(void)
|
|
* disable SMP for now
|
|
*/
|
|
bmips_smp_enabled = 0;
|
|
-
|
|
- /*
|
|
- * RAC flush causes kernel panics on BCM6358 when booting from TP1
|
|
- * because the bootloader is not initializing it properly.
|
|
- */
|
|
- bmips_rac_flush_disable = !!(read_c0_brcm_cmt_local() & (1 << 31));
|
|
}
|
|
|
|
static void bcm6368_quirks(void)
|
|
@@ -198,6 +192,11 @@ static const struct bmips_quirk bmips_qu
|
|
|
|
void __init prom_init(void)
|
|
{
|
|
+ if (!(read_c0_brcm_cbr() >> 18))
|
|
+ bmips_cbr_addr = (void __iomem *)0xff400000;
|
|
+ else
|
|
+ bmips_cbr_addr = BMIPS_GET_CBR();
|
|
+
|
|
bmips_cpu_setup();
|
|
register_bmips_smp_ops();
|
|
}
|