Automatic merge of 'next' into merge (2023-08-17 10:20)

linuxppc · Aug 17, 2023 · d774975 · d774975
2 parents 198165d + fe8aa8e
commit d774975
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Showing 89 changed files with 411 additions and 425 deletions.
diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu
@@ -556,6 +556,7 @@ Description:	Control Symmetric Multi Threading (SMT)
 			 ================ =========================================
 			 "on"		  SMT is enabled
 			 "off"		  SMT is disabled
+			 "<N>"		  SMT is enabled with N threads per core.
 			 "forceoff"	  SMT is force disabled. Cannot be changed.
 			 "notsupported"   SMT is not supported by the CPU
 			 "notimplemented" SMT runtime toggling is not

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
@@ -3874,10 +3874,10 @@
 	nosmp		[SMP] Tells an SMP kernel to act as a UP kernel,
 			and disable the IO APIC.  legacy for "maxcpus=0".
 
-	nosmt		[KNL,MIPS,S390] Disable symmetric multithreading (SMT).
+	nosmt		[KNL,MIPS,PPC,S390] Disable symmetric multithreading (SMT).
 			Equivalent to smt=1.
 
-			[KNL,X86] Disable symmetric multithreading (SMT).
+			[KNL,X86,PPC] Disable symmetric multithreading (SMT).
 			nosmt=force: Force disable SMT, cannot be undone
 				     via the sysfs control file.
 

diff --git a/arch/Kconfig b/arch/Kconfig
@@ -34,6 +34,9 @@ config ARCH_HAS_SUBPAGE_FAULTS
 config HOTPLUG_SMT
 	bool
 
+config SMT_NUM_THREADS_DYNAMIC
+	bool
+
 # Selected by HOTPLUG_CORE_SYNC_DEAD or HOTPLUG_CORE_SYNC_FULL
 config HOTPLUG_CORE_SYNC
 	bool

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
@@ -272,6 +272,8 @@ config PPC
 	select HAVE_SYSCALL_TRACEPOINTS
 	select HAVE_VIRT_CPU_ACCOUNTING
 	select HAVE_VIRT_CPU_ACCOUNTING_GEN
+	select HOTPLUG_SMT			if HOTPLUG_CPU
+	select SMT_NUM_THREADS_DYNAMIC
 	select HUGETLB_PAGE_SIZE_VARIABLE	if PPC_BOOK3S_64 && HUGETLB_PAGE
 	select IOMMU_HELPER			if PPC64
 	select IRQ_DOMAIN
@@ -1144,12 +1146,6 @@ config FSL_GTM
 	help
 	  Freescale General-purpose Timers support
 
-config PCI_8260
-	bool
-	depends on PCI && 8260
-	select PPC_INDIRECT_PCI
-	default y
-
 config FSL_RIO
 	bool "Freescale Embedded SRIO Controller support"
 	depends on RAPIDIO = y && HAVE_RAPIDIO

diff --git a/arch/powerpc/configs/pmac32_defconfig b/arch/powerpc/configs/pmac32_defconfig
@@ -176,8 +176,9 @@ CONFIG_MOUSE_APPLETOUCH=y
 # CONFIG_SERIO_I8042 is not set
 # CONFIG_SERIO_SERPORT is not set
 CONFIG_SERIAL_8250=m
-CONFIG_SERIAL_PMACZILOG=m
+CONFIG_SERIAL_PMACZILOG=y
 CONFIG_SERIAL_PMACZILOG_TTYS=y
+CONFIG_SERIAL_PMACZILOG_CONSOLE=y
 CONFIG_NVRAM=y
 CONFIG_I2C_CHARDEV=m
 CONFIG_APM_POWER=y

diff --git a/arch/powerpc/include/asm/8xx_immap.h b/arch/powerpc/include/asm/8xx_immap.h
@@ -560,5 +560,7 @@ typedef struct immap {
 	cpm8xx_t	im_cpm;		/* Communication processor */
 } immap_t;
 
+extern immap_t __iomem *mpc8xx_immr;
+
 #endif /* __IMMAP_8XX__ */
 #endif /* __KERNEL__ */
diff --git a/arch/powerpc/include/asm/Kbuild b/arch/powerpc/include/asm/Kbuild
@@ -3,7 +3,6 @@ generated-y += syscall_table_32.h
 generated-y += syscall_table_64.h
 generated-y += syscall_table_spu.h
 generic-y += agp.h
-generic-y += export.h
 generic-y += kvm_types.h
 generic-y += mcs_spinlock.h
 generic-y += qrwlock.h

diff --git a/arch/powerpc/include/asm/cpm2.h b/arch/powerpc/include/asm/cpm2.h
@@ -1080,6 +1080,9 @@ typedef struct im_idma {
 #define FCC2_MEM_OFFSET FCC_MEM_OFFSET(1)
 #define FCC3_MEM_OFFSET FCC_MEM_OFFSET(2)
 
+/* Pipeline Maximum Depth */
+#define MPC82XX_BCR_PLDP 0x00800000
+
 /* Clocks and GRG's */
 
 enum cpm_clk_dir {

diff --git a/arch/powerpc/include/asm/fs_pd.h b/arch/powerpc/include/asm/fs_pd.h
@@ -14,28 +14,6 @@
 #include <sysdev/fsl_soc.h>
 #include <asm/time.h>
 
-#ifdef CONFIG_CPM2
-#include <asm/cpm2.h>
-
-#if defined(CONFIG_8260)
-#include <asm/mpc8260.h>
-#endif
-
-#define cpm2_map(member) (&cpm2_immr->member)
-#define cpm2_map_size(member, size) (&cpm2_immr->member)
-#define cpm2_unmap(addr) do {} while(0)
-#endif
-
-#ifdef CONFIG_PPC_8xx
-#include <asm/8xx_immap.h>
-
-extern immap_t __iomem *mpc8xx_immr;
-
-#define immr_map(member) (&mpc8xx_immr->member)
-#define immr_map_size(member, size) (&mpc8xx_immr->member)
-#define immr_unmap(addr) do {} while (0)
-#endif
-
 static inline int uart_baudrate(void)
 {
         return get_baudrate();

diff --git a/arch/powerpc/include/asm/mpc8260.h b/arch/powerpc/include/asm/mpc8260.h
diff --git a/arch/powerpc/include/asm/ppc-opcode.h b/arch/powerpc/include/asm/ppc-opcode.h
@@ -397,6 +397,7 @@
 #define PPC_RAW_RFCI			(0x4c000066)
 #define PPC_RAW_RFDI			(0x4c00004e)
 #define PPC_RAW_RFMCI			(0x4c00004c)
+#define PPC_RAW_TLBILX_LPID		(0x7c000024)
 #define PPC_RAW_TLBILX(t, a, b)		(0x7c000024 | __PPC_T_TLB(t) | 	__PPC_RA0(a) | __PPC_RB(b))
 #define PPC_RAW_WAIT_v203		(0x7c00007c)
 #define PPC_RAW_WAIT(w, p)		(0x7c00003c | __PPC_WC(w) | __PPC_PL(p))
@@ -616,6 +617,7 @@
 #define PPC_TLBILX(t, a, b)	stringify_in_c(.long PPC_RAW_TLBILX(t, a, b))
 #define PPC_TLBILX_ALL(a, b)	PPC_TLBILX(0, a, b)
 #define PPC_TLBILX_PID(a, b)	PPC_TLBILX(1, a, b)
+#define PPC_TLBILX_LPID		stringify_in_c(.long PPC_RAW_TLBILX_LPID)
 #define PPC_TLBILX_VA(a, b)	PPC_TLBILX(3, a, b)
 #define PPC_WAIT_v203		stringify_in_c(.long PPC_RAW_WAIT_v203)
 #define PPC_WAIT(w, p)		stringify_in_c(.long PPC_RAW_WAIT(w, p))

diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
@@ -1414,11 +1414,9 @@ static inline void mtmsr_isync(unsigned long val)
 #define mfspr(rn)	({unsigned long rval; \
 			asm volatile("mfspr %0," __stringify(rn) \
 				: "=r" (rval)); rval;})
-#ifndef mtspr
 #define mtspr(rn, v)	asm volatile("mtspr " __stringify(rn) ",%0" : \
 				     : "r" ((unsigned long)(v)) \
 				     : "memory")
-#endif
 #define wrtspr(rn)	asm volatile("mtspr " __stringify(rn) ",2" : : : "memory")
 
 static inline void wrtee(unsigned long val)

diff --git a/arch/powerpc/include/asm/topology.h b/arch/powerpc/include/asm/topology.h
@@ -143,5 +143,20 @@ static inline int cpu_to_coregroup_id(int cpu)
 #endif
 #endif
 
+#ifdef CONFIG_HOTPLUG_SMT
+#include <linux/cpu_smt.h>
+#include <asm/cputhreads.h>
+
+static inline bool topology_is_primary_thread(unsigned int cpu)
+{
+	return cpu == cpu_first_thread_sibling(cpu);
+}
+
+static inline bool topology_smt_thread_allowed(unsigned int cpu)
+{
+	return cpu_thread_in_core(cpu) < cpu_smt_num_threads;
+}
+#endif
+
 #endif /* __KERNEL__ */
 #endif	/* _ASM_POWERPC_TOPOLOGY_H */
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S
@@ -29,7 +29,6 @@
 #include <asm/asm-offsets.h>
 #include <asm/unistd.h>
 #include <asm/ptrace.h>
-#include <asm/export.h>
 #include <asm/feature-fixups.h>
 #include <asm/barrier.h>
 #include <asm/kup.h>

diff --git a/arch/powerpc/kernel/epapr_hcalls.S b/arch/powerpc/kernel/epapr_hcalls.S
@@ -3,6 +3,7 @@
  * Copyright (C) 2012 Freescale Semiconductor, Inc.
  */
 
+#include <linux/export.h>
 #include <linux/threads.h>
 #include <asm/epapr_hcalls.h>
 #include <asm/reg.h>
@@ -12,7 +13,6 @@
 #include <asm/ppc_asm.h>
 #include <asm/asm-compat.h>
 #include <asm/asm-offsets.h>
-#include <asm/export.h>
 
 #ifndef CONFIG_PPC64
 /* epapr_ev_idle() was derived from e500_idle() */

diff --git a/arch/powerpc/kernel/fpu.S b/arch/powerpc/kernel/fpu.S
@@ -9,6 +9,7 @@
  *    Copyright (C) 1997 Dan Malek ([email protected]).
  */
 
+#include <linux/export.h>
 #include <asm/reg.h>
 #include <asm/page.h>
 #include <asm/mmu.h>
@@ -18,7 +19,6 @@
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
 #include <asm/ptrace.h>
-#include <asm/export.h>
 #include <asm/asm-compat.h>
 #include <asm/feature-fixups.h>
 

diff --git a/arch/powerpc/kernel/head_40x.S b/arch/powerpc/kernel/head_40x.S
@@ -38,7 +38,6 @@
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
 #include <asm/ptrace.h>
-#include <asm/export.h>
 
 #include "head_32.h"
 

diff --git a/arch/powerpc/kernel/head_44x.S b/arch/powerpc/kernel/head_44x.S
@@ -35,7 +35,6 @@
 #include <asm/asm-offsets.h>
 #include <asm/ptrace.h>
 #include <asm/synch.h>
-#include <asm/export.h>
 #include <asm/code-patching-asm.h>
 #include "head_booke.h"
 

diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
@@ -40,7 +40,6 @@
 #include <asm/hw_irq.h>
 #include <asm/cputhreads.h>
 #include <asm/ppc-opcode.h>
-#include <asm/export.h>
 #include <asm/feature-fixups.h>
 #ifdef CONFIG_PPC_BOOK3S
 #include <asm/exception-64s.h>

diff --git a/arch/powerpc/kernel/head_85xx.S b/arch/powerpc/kernel/head_85xx.S
@@ -40,7 +40,6 @@
 #include <asm/asm-offsets.h>
 #include <asm/cache.h>
 #include <asm/ptrace.h>
-#include <asm/export.h>
 #include <asm/feature-fixups.h>
 #include "head_booke.h"
 

diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
@@ -29,7 +29,6 @@
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
 #include <asm/ptrace.h>
-#include <asm/export.h>
 #include <asm/code-patching-asm.h>
 #include <asm/interrupt.h>
 

diff --git a/arch/powerpc/kernel/head_book3s_32.S b/arch/powerpc/kernel/head_book3s_32.S
@@ -31,7 +31,6 @@
 #include <asm/ptrace.h>
 #include <asm/bug.h>
 #include <asm/kvm_book3s_asm.h>
-#include <asm/export.h>
 #include <asm/feature-fixups.h>
 #include <asm/interrupt.h>
 

diff --git a/arch/powerpc/kernel/misc.S b/arch/powerpc/kernel/misc.S
@@ -10,11 +10,11 @@
  *
  * setjmp/longjmp code by Paul Mackerras.
  */
+#include <linux/export.h>
 #include <asm/ppc_asm.h>
 #include <asm/unistd.h>
 #include <asm/asm-compat.h>
 #include <asm/asm-offsets.h>
-#include <asm/export.h>
 
 	.text
 

diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S
@@ -8,6 +8,7 @@
  *
  */
 
+#include <linux/export.h>
 #include <linux/sys.h>
 #include <asm/unistd.h>
 #include <asm/errno.h>
@@ -22,7 +23,6 @@
 #include <asm/processor.h>
 #include <asm/bug.h>
 #include <asm/ptrace.h>
-#include <asm/export.h>
 #include <asm/feature-fixups.h>
 
 	.text

diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
@@ -9,6 +9,7 @@
  * PPC64 updates by Dave Engebretsen ([email protected])
  */
 
+#include <linux/export.h>
 #include <linux/linkage.h>
 #include <linux/sys.h>
 #include <asm/unistd.h>
@@ -23,7 +24,6 @@
 #include <asm/kexec.h>
 #include <asm/ptrace.h>
 #include <asm/mmu.h>
-#include <asm/export.h>
 #include <asm/feature-fixups.h>
 
 	.text

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
@@ -1088,7 +1088,7 @@ static int __init init_big_cores(void)
 
 void __init smp_prepare_cpus(unsigned int max_cpus)
 {
-	unsigned int cpu;
+	unsigned int cpu, num_threads;
 
 	DBG("smp_prepare_cpus\n");
 
@@ -1155,6 +1155,12 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
 
 	if (smp_ops && smp_ops->probe)
 		smp_ops->probe();
+
+	// Initalise the generic SMT topology support
+	num_threads = 1;
+	if (smt_enabled_at_boot)
+		num_threads = smt_enabled_at_boot;
+	cpu_smt_set_num_threads(num_threads, threads_per_core);
 }
 
 void smp_prepare_boot_cpu(void)

diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S
@@ -6,13 +6,13 @@
  * Copyright 2012 Matt Evans & Michael Neuling, IBM Corporation.
  */
 
+#include <linux/export.h>
 #include <asm/asm-offsets.h>
 #include <asm/ppc_asm.h>
 #include <asm/ppc-opcode.h>
 #include <asm/ptrace.h>
 #include <asm/reg.h>
 #include <asm/bug.h>
-#include <asm/export.h>
 #include <asm/feature-fixups.h>
 
 #ifdef CONFIG_VSX

diff --git a/arch/powerpc/kernel/trace/ftrace_64_pg.S b/arch/powerpc/kernel/trace/ftrace_64_pg.S
@@ -8,7 +8,6 @@
 #include <asm/asm-offsets.h>
 #include <asm/ftrace.h>
 #include <asm/ppc-opcode.h>
-#include <asm/export.h>
 
 _GLOBAL_TOC(ftrace_caller)
 	lbz	r3, PACA_FTRACE_ENABLED(r13)

diff --git a/arch/powerpc/kernel/trace/ftrace_low.S b/arch/powerpc/kernel/trace/ftrace_low.S
@@ -3,12 +3,12 @@
  * Split from entry_64.S
  */
 
+#include <linux/export.h>
 #include <linux/magic.h>
 #include <asm/ppc_asm.h>
 #include <asm/asm-offsets.h>
 #include <asm/ftrace.h>
 #include <asm/ppc-opcode.h>
-#include <asm/export.h>
 
 #ifdef CONFIG_PPC64
 .pushsection ".tramp.ftrace.text","aw",@progbits;

diff --git a/arch/powerpc/kernel/trace/ftrace_mprofile.S b/arch/powerpc/kernel/trace/ftrace_mprofile.S
@@ -8,7 +8,6 @@
 #include <asm/asm-offsets.h>
 #include <asm/ftrace.h>
 #include <asm/ppc-opcode.h>
-#include <asm/export.h>
 #include <asm/thread_info.h>
 #include <asm/bug.h>
 #include <asm/ptrace.h>