From 6b3087c64a92a36ae20d33479b4df6d7afc910d4 Mon Sep 17 00:00:00 2001 From: Graf Yang Date: Wed, 7 Jan 2009 23:14:39 +0800 Subject: Blackfin arch: SMP supporting patchset: Blackfin header files and machine common 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 header files and machine common code Signed-off-by: Graf Yang Signed-off-by: Bryan Wu --- arch/blackfin/include/asm/pda.h | 70 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 arch/blackfin/include/asm/pda.h (limited to 'arch/blackfin/include/asm/pda.h') diff --git a/arch/blackfin/include/asm/pda.h b/arch/blackfin/include/asm/pda.h new file mode 100644 index 0000000..a24d130 --- /dev/null +++ b/arch/blackfin/include/asm/pda.h @@ -0,0 +1,70 @@ +/* + * File: arch/blackfin/include/asm/pda.h + * Author: Philippe Gerum + * + * Copyright 2007 Analog Devices Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see the file COPYING, or write + * to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef _ASM_BLACKFIN_PDA_H +#define _ASM_BLACKFIN_PDA_H + +#include + +#ifndef __ASSEMBLY__ + +struct blackfin_pda { /* Per-processor Data Area */ + struct blackfin_pda *next; + + unsigned long syscfg; +#ifdef CONFIG_SMP + unsigned long imask; /* Current IMASK value */ +#endif + + unsigned long *ipdt; /* Start of switchable I-CPLB table */ + unsigned long *ipdt_swapcount; /* Number of swaps in ipdt */ + unsigned long *dpdt; /* Start of switchable D-CPLB table */ + unsigned long *dpdt_swapcount; /* Number of swaps in dpdt */ + + /* + * Single instructions can have multiple faults, which + * need to be handled by traps.c, in irq5. We store + * the exception cause to ensure we don't miss a + * double fault condition + */ + unsigned long ex_iptr; + unsigned long ex_optr; + unsigned long ex_buf[4]; + unsigned long ex_imask; /* Saved imask from exception */ + unsigned long *ex_stack; /* Exception stack space */ + +#ifdef ANOMALY_05000261 + unsigned long last_cplb_fault_retx; +#endif + unsigned long dcplb_fault_addr; + unsigned long icplb_fault_addr; + unsigned long retx; + unsigned long seqstat; +}; + +extern struct blackfin_pda cpu_pda[]; + +void reserve_pda(void); + +#endif /* __ASSEMBLY__ */ + +#endif /* _ASM_BLACKFIN_PDA_H */ -- cgit v1.1