Contact: linuxppc-dev@lists.ozlabs.org
Description: read/write
Set the mode for prefaulting in segments into the segment table
- when performing the START_WORK ioctl. Possible values:
+ when performing the START_WORK ioctl. Only applicable when
+ running under hashed page table mmu.
+ Possible values:
none: No prefaulting (default)
work_element_descriptor: Treat the work element
descriptor as an effective address and
Returns 1 if the psl timebase register is synchronized
with the core timebase register, 0 otherwise.
Users: https://github.com/ibm-capi/libcxl
+
+ What: /sys/class/cxl/<card>/tunneled_ops_supported
+ Date: May 2018
+ Contact: linuxppc-dev@lists.ozlabs.org
+ Description: read only
+ Returns 1 if tunneled operations are supported in capi mode,
+ 0 otherwise.
+ Users: https://github.com/ibm-capi/libcxl
#else /* !__ASSEMBLY__ */
extern void _mcount(void);
-#ifdef CONFIG_DYNAMIC_FTRACE
-# define FTRACE_ADDR ((unsigned long)ftrace_caller)
-# define FTRACE_REGS_ADDR FTRACE_ADDR
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
/* reloction of mcount call site is the same as the address */
struct dyn_arch_ftrace {
struct module *mod;
};
-#endif /* CONFIG_DYNAMIC_FTRACE */
#endif /* __ASSEMBLY__ */
#ifdef CONFIG_DYNAMIC_FTRACE_WITH_REGS
#define ARCH_SUPPORTS_FTRACE_OPS 1
#endif
-#endif
+#endif /* CONFIG_FUNCTION_TRACER */
-#if defined(CONFIG_FTRACE_SYSCALLS) && !defined(__ASSEMBLY__)
+#ifndef __ASSEMBLY__
- #if defined(CONFIG_FTRACE_SYSCALLS) && defined(PPC64_ELF_ABI_v1)
++#ifdef CONFIG_FTRACE_SYSCALLS
+ /*
+ * Some syscall entry functions on powerpc start with "ppc_" (fork and clone,
+ * for instance) or ppc32_/ppc64_. We should also match the sys_ variant with
+ * those.
+ */
#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
+ #ifdef PPC64_ELF_ABI_v1
static inline bool arch_syscall_match_sym_name(const char *sym, const char *name)
{
- /*
- * Compare the symbol name with the system call name. Skip the .sys or .SyS
- * prefix from the symbol name and the sys prefix from the system call name and
- * just match the rest. This is only needed on ppc64 since symbol names on
- * 32bit do not start with a period so the generic function will work.
- */
- return !strcmp(sym + 4, name + 3);
+ /* We need to skip past the initial dot, and the __se_sys alias */
+ return !strcmp(sym + 1, name) ||
+ (!strncmp(sym, ".__se_sys", 9) && !strcmp(sym + 6, name)) ||
+ (!strncmp(sym, ".ppc_", 5) && !strcmp(sym + 5, name + 4)) ||
+ (!strncmp(sym, ".ppc32_", 7) && !strcmp(sym + 7, name + 4)) ||
+ (!strncmp(sym, ".ppc64_", 7) && !strcmp(sym + 7, name + 4));
}
- #endif /* CONFIG_FTRACE_SYSCALLS && PPC64_ELF_ABI_v1 */
+ #else
+ static inline bool arch_syscall_match_sym_name(const char *sym, const char *name)
+ {
+ return !strcmp(sym, name) ||
+ (!strncmp(sym, "__se_sys", 8) && !strcmp(sym + 5, name)) ||
+ (!strncmp(sym, "ppc_", 4) && !strcmp(sym + 4, name + 4)) ||
+ (!strncmp(sym, "ppc32_", 6) && !strcmp(sym + 6, name + 4)) ||
+ (!strncmp(sym, "ppc64_", 6) && !strcmp(sym + 6, name + 4));
+ }
-#endif
-#endif /* CONFIG_FTRACE_SYSCALLS && !__ASSEMBLY__ */
++#endif /* PPC64_ELF_ABI_v1 */
++#endif /* CONFIG_FTRACE_SYSCALLS */
+
+#ifdef CONFIG_PPC64
+#include <asm/paca.h>
+
+static inline void this_cpu_disable_ftrace(void)
+{
+ get_paca()->ftrace_enabled = 0;
+}
+
+static inline void this_cpu_enable_ftrace(void)
+{
+ get_paca()->ftrace_enabled = 1;
+}
+#else /* CONFIG_PPC64 */
+static inline void this_cpu_disable_ftrace(void) { }
+static inline void this_cpu_enable_ftrace(void) { }
+#endif /* CONFIG_PPC64 */
+#endif /* !__ASSEMBLY__ */
#endif /* _ASM_POWERPC_FTRACE */
u64 saved_msr; /* MSR saved here by enter_rtas */
u16 trap_save; /* Used when bad stack is encountered */
u8 irq_soft_mask; /* mask for irq soft masking */
- u8 soft_enabled; /* irq soft-enable flag */
u8 irq_happened; /* irq happened while soft-disabled */
u8 io_sync; /* writel() needs spin_unlock sync */
u8 irq_work_pending; /* IRQ_WORK interrupt while soft-disable */
u8 hmi_event_available; /* HMI event is available */
u8 hmi_p9_special_emu; /* HMI P9 special emulation */
#endif
+ u8 ftrace_enabled; /* Hard disable ftrace */
/* Stuff for accurate time accounting */
struct cpu_accounting_data accounting;
cxl_p1_write(adapter, CXL_PSL9_FIR_CNTL, psl_fircntl);
/* Setup the PSL to transmit packets on the PCIe before the
- * CAPP is enabled
+ * CAPP is enabled. Make sure that CAPP virtual machines are disabled
*/
- cxl_p1_write(adapter, CXL_PSL9_DSNDCTL, 0x0001001000002A10ULL);
+ cxl_p1_write(adapter, CXL_PSL9_DSNDCTL, 0x0001001000012A10ULL);
/*
* A response to an ASB_Notify request is returned by the
/* Required for devices using CAPP DMA mode, harmless for others */
pci_set_master(dev);
+ adapter->tunneled_ops_supported = false;
+
+ if (cxl_is_power9()) {
+ if (pnv_pci_set_tunnel_bar(dev, 0x00020000E0000000ull, 1))
+ dev_info(&dev->dev, "Tunneled operations unsupported\n");
+ else
+ adapter->tunneled_ops_supported = true;
+ }
+
if ((rc = pnv_phb_to_cxl_mode(dev, adapter->native->sl_ops->capi_mode)))
goto err;
{
struct pci_dev *pdev = to_pci_dev(adapter->dev.parent);
+ if (cxl_is_power9())
+ pnv_pci_set_tunnel_bar(pdev, 0x00020000E0000000ull, 0);
+
cxl_native_release_psl_err_irq(adapter);
cxl_unmap_adapter_regs(adapter);
return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->psl_timebase_synced);
}
+ static ssize_t tunneled_ops_supported_show(struct device *device,
+ struct device_attribute *attr,
+ char *buf)
+ {
+ struct cxl *adapter = to_cxl_adapter(device);
+
+ return scnprintf(buf, PAGE_SIZE, "%i\n", adapter->tunneled_ops_supported);
+ }
+
static ssize_t reset_adapter_store(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
__ATTR_RO(base_image),
__ATTR_RO(image_loaded),
__ATTR_RO(psl_timebase_synced),
+ __ATTR_RO(tunneled_ops_supported),
__ATTR_RW(load_image_on_perst),
__ATTR_RW(perst_reloads_same_image),
__ATTR(reset, S_IWUSR, NULL, reset_adapter_store),
struct cxl_afu *afu = to_cxl_afu(device);
enum prefault_modes mode = -1;
- if (!strncmp(buf, "work_element_descriptor", 23))
- mode = CXL_PREFAULT_WED;
- if (!strncmp(buf, "all", 3))
- mode = CXL_PREFAULT_ALL;
if (!strncmp(buf, "none", 4))
mode = CXL_PREFAULT_NONE;
+ else {
+ if (!radix_enabled()) {
+
+ /* only allowed when not in radix mode */
+ if (!strncmp(buf, "work_element_descriptor", 23))
+ mode = CXL_PREFAULT_WED;
+ if (!strncmp(buf, "all", 3))
+ mode = CXL_PREFAULT_ALL;
+ } else {
+ dev_err(device, "Cannot prefault with radix enabled\n");
+ }
+ }
if (mode == -1)
return -EINVAL;
projects / platform / kernel / linux-rpi.git / commitdiff