diff options
author | Stefan Agner <stefan.agner@toradex.com> | 2016-12-20 17:04:49 +0100 |
---|---|---|
committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-01-11 15:56:37 +0100 |
commit | cd2eb96658b73d3110071c848029767c3f43c0da (patch) | |
tree | f1146834fabd0edeac26dec1ac5d7565a2733e7b /arch/mips/mti-malta/malta-setup.c | |
parent | 56ffbfa0a24d8fd51ce9a7f79e36150a75b68c2a (diff) | |
parent | a34f0e8a2f8976f0bae4962edf2af4dd16cb85f7 (diff) |
Merge tag 'v4.4.39' into toradex_vf_4.4-next
This is the 4.4.39 stable release
Diffstat (limited to 'arch/mips/mti-malta/malta-setup.c')
-rw-r--r-- | arch/mips/mti-malta/malta-setup.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c index 4740c82fb97a..36b09b2ea972 100644 --- a/arch/mips/mti-malta/malta-setup.c +++ b/arch/mips/mti-malta/malta-setup.c @@ -39,6 +39,9 @@ #include <linux/console.h> #endif +#define ROCIT_CONFIG_GEN0 0x1f403000 +#define ROCIT_CONFIG_GEN0_PCI_IOCU BIT(7) + extern void malta_be_init(void); extern int malta_be_handler(struct pt_regs *regs, int is_fixup); @@ -107,6 +110,8 @@ static void __init fd_activate(void) static int __init plat_enable_iocoherency(void) { int supported = 0; + u32 cfg; + if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO) { if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) { BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN; @@ -129,7 +134,8 @@ static int __init plat_enable_iocoherency(void) } else if (mips_cm_numiocu() != 0) { /* Nothing special needs to be done to enable coherency */ pr_info("CMP IOCU detected\n"); - if ((*(unsigned int *)0xbf403000 & 0x81) != 0x81) { + cfg = __raw_readl((u32 *)CKSEG1ADDR(ROCIT_CONFIG_GEN0)); + if (!(cfg & ROCIT_CONFIG_GEN0_PCI_IOCU)) { pr_crit("IOCU OPERATION DISABLED BY SWITCH - DEFAULTING TO SW IO COHERENCY\n"); return 0; } |