Blackfin arch: SMP supporting patchset: Blackfin kernel and memory management code

Blackfin dual core BF561 processor can support SMP like features.
https://docs.blackfin.uclinux.org/doku.php?id=linux-kernel:smp-like

In this patch, we provide SMP extend to Blackfin kernel and memory management code

Singed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/arch/blackfin/kernel/asm-offsets.c b/arch/blackfin/kernel/asm-offsets.c
index 9bb85dd5ccb..b5df9459d6d 100644
--- a/arch/blackfin/kernel/asm-offsets.c
+++ b/arch/blackfin/kernel/asm-offsets.c
@@ -56,6 +56,9 @@ int main(void)
         /* offsets into the thread struct */
         DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp));
         DEFINE(THREAD_USP, offsetof(struct thread_struct, usp));
+        DEFINE(THREAD_SR, offsetof(struct thread_struct, seqstat));
+        DEFINE(PT_SR, offsetof(struct thread_struct, seqstat));
+        DEFINE(THREAD_ESP0, offsetof(struct thread_struct, esp0));
         DEFINE(THREAD_PC, offsetof(struct thread_struct, pc));
         DEFINE(KERNEL_STACK_SIZE, THREAD_SIZE);
 
@@ -128,5 +131,31 @@ int main(void)
         DEFINE(SIGSEGV, SIGSEGV);
         DEFINE(SIGTRAP, SIGTRAP);
 
+        /* PDA management (in L1 scratchpad) */
+        DEFINE(PDA_SYSCFG, offsetof(struct blackfin_pda, syscfg));
+#ifdef CONFIG_SMP
+        DEFINE(PDA_IRQFLAGS, offsetof(struct blackfin_pda, imask));
+#endif
+        DEFINE(PDA_IPDT, offsetof(struct blackfin_pda, ipdt));
+        DEFINE(PDA_IPDT_SWAPCOUNT, offsetof(struct blackfin_pda, ipdt_swapcount));
+        DEFINE(PDA_DPDT, offsetof(struct blackfin_pda, dpdt));
+        DEFINE(PDA_DPDT_SWAPCOUNT, offsetof(struct blackfin_pda, dpdt_swapcount));
+        DEFINE(PDA_EXIPTR, offsetof(struct blackfin_pda, ex_iptr));
+        DEFINE(PDA_EXOPTR, offsetof(struct blackfin_pda, ex_optr));
+        DEFINE(PDA_EXBUF, offsetof(struct blackfin_pda, ex_buf));
+        DEFINE(PDA_EXIMASK, offsetof(struct blackfin_pda, ex_imask));
+        DEFINE(PDA_EXSTACK, offsetof(struct blackfin_pda, ex_stack));
+#ifdef ANOMALY_05000261
+        DEFINE(PDA_LFRETX, offsetof(struct blackfin_pda, last_cplb_fault_retx));
+#endif
+        DEFINE(PDA_DCPLB, offsetof(struct blackfin_pda, dcplb_fault_addr));
+        DEFINE(PDA_ICPLB, offsetof(struct blackfin_pda, icplb_fault_addr));
+        DEFINE(PDA_RETX, offsetof(struct blackfin_pda, retx));
+        DEFINE(PDA_SEQSTAT, offsetof(struct blackfin_pda, seqstat));
+#ifdef CONFIG_SMP
+        /* Inter-core lock (in L2 SRAM) */
+        DEFINE(SIZEOF_CORELOCK, sizeof(struct corelock_slot));
+#endif
+
         return 0;
 }