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A few MIPS fixes for 5.0:

Browse Source 
- Fix IPI handling for Lantiq SoCs, which was broken by changes made
   back in v4.12.
 
 - Enable OF/DT serial support in ath79_defconfig to give us working
   serial by default.
 
 - Fix 64b builds for the Jazz platform.
 
 - Set up a struct device for the BCM47xx SoC to allow BCM47xx drivers to
   perform DMA again following the major DMA mapping changes made in
   v4.19.
 
 - Disable MSI on Cavium Octeon systems when the pcie_disable command
   line parameter introduced in v3.3 is used, in order to avoid
   inadvetently accessing PCIe controller registers despite the command
   line.
 
 - Fix a build failure for Cavium Octeon kernels with kexec enabled,
   introduced in v4.20.
 
 - Fix a regression in the behaviour of semctl/shmctl/msgctl IPC syscalls
   for kernels including n32 support but not o32 support caused by some
   cleanup in v3.19.
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Merge tag 'mips_fixes_5.0_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fixes from Paul Burton:

 - Fix IPI handling for Lantiq SoCs, which was broken by changes made
   back in v4.12.

 - Enable OF/DT serial support in ath79_defconfig to give us working
   serial by default.

 - Fix 64b builds for the Jazz platform.

 - Set up a struct device for the BCM47xx SoC to allow BCM47xx drivers
   to perform DMA again following the major DMA mapping changes made in
   v4.19.

 - Disable MSI on Cavium Octeon systems when the pcie_disable command
   line parameter introduced in v3.3 is used, in order to avoid
   inadvetently accessing PCIe controller registers despite the command
   line.

 - Fix a build failure for Cavium Octeon kernels with kexec enabled,
   introduced in v4.20.

 - Fix a regression in the behaviour of semctl/shmctl/msgctl IPC
   syscalls for kernels including n32 support but not o32 support caused
   by some cleanup in v3.19.

* tag 'mips_fixes_5.0_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: OCTEON: fix kexec support
  mips: fix n32 compat_ipc_parse_version
  Disable MSI also when pcie-octeon.pcie_disable on
  MIPS: BCM47XX: Setup struct device for the SoC
  MIPS: jazz: fix 64bit build
  MIPS: ath79: Enable OF serial ports in the default config
  MIPS: lantiq: Use CP0_LEGACY_COMPARE_IRQ
  MIPS: lantiq: Fix IPI interrupt handling
This commit is contained in:
Linus Torvalds 2019-01-20 10:33:18 +12:00
commit 5d5c303ea0
10 changed files with 47 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/mips/Kconfig
View File

@ -3155,6 +3155,7 @@ config MIPS32_O32
config MIPS32_N32
bool "Kernel support for n32 binaries"
depends on 64BIT
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
select COMPAT
select MIPS32_COMPAT
select SYSVIPC_COMPAT if SYSVIPC

31
arch/mips/bcm47xx/setup.c
View File

@ -173,6 +173,31 @@ void __init plat_mem_setup(void)
pm_power_off = bcm47xx_machine_halt;
}
#ifdef CONFIG_BCM47XX_BCMA
static struct device * __init bcm47xx_setup_device(void)
{
struct device *dev;
int err;
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return NULL;
err = dev_set_name(dev, "bcm47xx_soc");
if (err) {
pr_err("Failed to set SoC device name: %d\n", err);
kfree(dev);
return NULL;
}
err = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (err)
pr_err("Failed to set SoC DMA mask: %d\n", err);
return dev;
}
#endif
/*
* This finishes bus initialization doing things that were not possible without
* kmalloc. Make sure to call it late enough (after mm_init).
@ -183,6 +208,10 @@ void __init bcm47xx_bus_setup(void)
if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
int err;
bcm47xx_bus.bcma.dev = bcm47xx_setup_device();
if (!bcm47xx_bus.bcma.dev)
panic("Failed to setup SoC device\n");
err = bcma_host_soc_init(&bcm47xx_bus.bcma);
if (err)
panic("Failed to initialize BCMA bus (err %d)", err);
@ -235,6 +264,8 @@ static int __init bcm47xx_register_bus_complete(void)
#endif
#ifdef CONFIG_BCM47XX_BCMA
case BCM47XX_BUS_TYPE_BCMA:
if (device_register(bcm47xx_bus.bcma.dev))
pr_err("Failed to register SoC device\n");
bcma_bus_register(&bcm47xx_bus.bcma.bus);
break;
#endif

2
arch/mips/cavium-octeon/setup.c
View File

@ -98,7 +98,7 @@ static void octeon_kexec_smp_down(void *ignored)
" sync \n"
" synci ($0) \n");
relocated_kexec_smp_wait(NULL);
kexec_reboot();
}
#endif

1
arch/mips/configs/ath79_defconfig
View File

@ -66,6 +66,7 @@ CONFIG_SERIAL_8250_CONSOLE=y
# CONFIG_SERIAL_8250_PCI is not set
CONFIG_SERIAL_8250_NR_UARTS=1
CONFIG_SERIAL_8250_RUNTIME_UARTS=1
CONFIG_SERIAL_OF_PLATFORM=y
CONFIG_SERIAL_AR933X=y
CONFIG_SERIAL_AR933X_CONSOLE=y
# CONFIG_HW_RANDOM is not set

2
arch/mips/include/asm/mach-lantiq/falcon/falcon_irq.h
View File

@ -18,8 +18,6 @@
#define INT_NUM_EXTRA_START (INT_NUM_IM4_IRL0 + 32)
#define INT_NUM_IM_OFFSET (INT_NUM_IM1_IRL0 - INT_NUM_IM0_IRL0)
#define MIPS_CPU_TIMER_IRQ 7
#define MAX_IM 5
#endif /* _FALCON_IRQ__ */

2
arch/mips/include/asm/mach-lantiq/xway/lantiq_irq.h
View File

@ -19,8 +19,6 @@
#define LTQ_DMA_CH0_INT (INT_NUM_IM2_IRL0)
#define MIPS_CPU_TIMER_IRQ 7
#define MAX_IM 5
#endif

5
arch/mips/jazz/jazzdma.c
View File

@ -74,14 +74,15 @@ static int __init vdma_init(void)
get_order(VDMA_PGTBL_SIZE));
BUG_ON(!pgtbl);
dma_cache_wback_inv((unsigned long)pgtbl, VDMA_PGTBL_SIZE);
pgtbl = (VDMA_PGTBL_ENTRY *)KSEG1ADDR(pgtbl);
pgtbl = (VDMA_PGTBL_ENTRY *)CKSEG1ADDR((unsigned long)pgtbl);
/*
* Clear the R4030 translation table
*/
vdma_pgtbl_init();
r4030_write_reg32(JAZZ_R4030_TRSTBL_BASE, CPHYSADDR(pgtbl));
r4030_write_reg32(JAZZ_R4030_TRSTBL_BASE,
CPHYSADDR((unsigned long)pgtbl));
r4030_write_reg32(JAZZ_R4030_TRSTBL_LIM, VDMA_PGTBL_SIZE);
r4030_write_reg32(JAZZ_R4030_TRSTBL_INV, 0);

77
arch/mips/lantiq/irq.c
View File

@ -224,9 +224,11 @@ static struct irq_chip ltq_eiu_type = {
.irq_set_type = ltq_eiu_settype,
};
static void ltq_hw_irqdispatch(int module)
static void ltq_hw_irq_handler(struct irq_desc *desc)
{
int module = irq_desc_get_irq(desc) - 2;
u32 irq;
int hwirq;
irq = ltq_icu_r32(module, LTQ_ICU_IM0_IOSR);
if (irq == 0)
@ -237,7 +239,8 @@ static void ltq_hw_irqdispatch(int module)
* other bits might be bogus
*/
irq = __fls(irq);
do_IRQ((int)irq + MIPS_CPU_IRQ_CASCADE + (INT_NUM_IM_OFFSET * module));
hwirq = irq + MIPS_CPU_IRQ_CASCADE + (INT_NUM_IM_OFFSET * module);
generic_handle_irq(irq_linear_revmap(ltq_domain, hwirq));
/* if this is a EBU irq, we need to ack it or get a deadlock */
if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0) && LTQ_EBU_PCC_ISTAT)
@ -245,49 +248,6 @@ static void ltq_hw_irqdispatch(int module)
LTQ_EBU_PCC_ISTAT);
}
#define DEFINE_HWx_IRQDISPATCH(x) \
static void ltq_hw ## x ## _irqdispatch(void) \
{ \
ltq_hw_irqdispatch(x); \
}
DEFINE_HWx_IRQDISPATCH(0)
DEFINE_HWx_IRQDISPATCH(1)
DEFINE_HWx_IRQDISPATCH(2)
DEFINE_HWx_IRQDISPATCH(3)
DEFINE_HWx_IRQDISPATCH(4)
#if MIPS_CPU_TIMER_IRQ == 7
static void ltq_hw5_irqdispatch(void)
{
do_IRQ(MIPS_CPU_TIMER_IRQ);
}
#else
DEFINE_HWx_IRQDISPATCH(5)
#endif
static void ltq_hw_irq_handler(struct irq_desc *desc)
{
ltq_hw_irqdispatch(irq_desc_get_irq(desc) - 2);
}
asmlinkage void plat_irq_dispatch(void)
{
unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
int irq;
if (!pending) {
spurious_interrupt();
return;
}
pending >>= CAUSEB_IP;
while (pending) {
irq = fls(pending) - 1;
do_IRQ(MIPS_CPU_IRQ_BASE + irq);
pending &= ~BIT(irq);
}
}
static int icu_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
{
struct irq_chip *chip = &ltq_irq_type;
@ -343,38 +303,13 @@ int __init icu_of_init(struct device_node *node, struct device_node *parent)
for (i = 0; i < MAX_IM; i++)
irq_set_chained_handler(i + 2, ltq_hw_irq_handler);
if (cpu_has_vint) {
pr_info("Setting up vectored interrupts\n");
set_vi_handler(2, ltq_hw0_irqdispatch);
set_vi_handler(3, ltq_hw1_irqdispatch);
set_vi_handler(4, ltq_hw2_irqdispatch);
set_vi_handler(5, ltq_hw3_irqdispatch);
set_vi_handler(6, ltq_hw4_irqdispatch);
set_vi_handler(7, ltq_hw5_irqdispatch);
}
ltq_domain = irq_domain_add_linear(node,
(MAX_IM * INT_NUM_IM_OFFSET) + MIPS_CPU_IRQ_CASCADE,
&irq_domain_ops, 0);
#ifndef CONFIG_MIPS_MT_SMP
set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 |
IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
#else
set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 |
IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
#endif
/* tell oprofile which irq to use */
ltq_perfcount_irq = irq_create_mapping(ltq_domain, LTQ_PERF_IRQ);
/*
* if the timer irq is not one of the mips irqs we need to
* create a mapping
*/
if (MIPS_CPU_TIMER_IRQ != 7)
irq_create_mapping(ltq_domain, MIPS_CPU_TIMER_IRQ);
/* the external interrupts are optional and xway only */
eiu_node = of_find_compatible_node(NULL, NULL, "lantiq,eiu-xway");
if (eiu_node && !of_address_to_resource(eiu_node, 0, &res)) {
@ -411,7 +346,7 @@ EXPORT_SYMBOL_GPL(get_c0_perfcount_int);
unsigned int get_c0_compare_int(void)
{
return MIPS_CPU_TIMER_IRQ;
return CP0_LEGACY_COMPARE_IRQ;
}
static struct of_device_id __initdata of_irq_ids[] = {

4
arch/mips/pci/msi-octeon.c
View File

@ -369,7 +369,9 @@ int __init octeon_msi_initialize(void)
int irq;
struct irq_chip *msi;
if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_PCIE) {
if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_INVALID) {
return 0;
} else if (octeon_dma_bar_type == OCTEON_DMA_BAR_TYPE_PCIE) {
msi_rcv_reg[0] = CVMX_PEXP_NPEI_MSI_RCV0;
msi_rcv_reg[1] = CVMX_PEXP_NPEI_MSI_RCV1;
msi_rcv_reg[2] = CVMX_PEXP_NPEI_MSI_RCV2;

1
include/linux/bcma/bcma_soc.h
View File

@ -6,6 +6,7 @@
struct bcma_soc {
struct bcma_bus bus;
struct device *dev;
};
int __init bcma_host_soc_register(struct bcma_soc *soc);