145 lines
3.4 KiB
C
145 lines
3.4 KiB
C
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/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 2011 by Kevin Cernekee (cernekee@gmail.com)
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*
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* Definitions for BMIPS processors
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*/
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#ifndef _ASM_BMIPS_H
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#define _ASM_BMIPS_H
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#include <linux/compiler.h>
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#include <linux/linkage.h>
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#include <asm/addrspace.h>
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#include <asm/mipsregs.h>
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#include <asm/hazards.h>
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/* NOTE: the CBR register returns a PA, and it can be above 0xff00_0000 */
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#define BMIPS_GET_CBR() ((void __iomem *)(CKSEG1 | \
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(unsigned long) \
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((read_c0_brcm_cbr() >> 18) << 18)))
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#define BMIPS_RAC_CONFIG 0x00000000
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#define BMIPS_RAC_ADDRESS_RANGE 0x00000004
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#define BMIPS_RAC_CONFIG_1 0x00000008
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#define BMIPS_L2_CONFIG 0x0000000c
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#define BMIPS_LMB_CONTROL 0x0000001c
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#define BMIPS_SYSTEM_BASE 0x00000020
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#define BMIPS_PERF_GLOBAL_CONTROL 0x00020000
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#define BMIPS_PERF_CONTROL_0 0x00020004
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#define BMIPS_PERF_CONTROL_1 0x00020008
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#define BMIPS_PERF_COUNTER_0 0x00020010
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#define BMIPS_PERF_COUNTER_1 0x00020014
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#define BMIPS_PERF_COUNTER_2 0x00020018
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#define BMIPS_PERF_COUNTER_3 0x0002001c
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#define BMIPS_RELO_VECTOR_CONTROL_0 0x00030000
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#define BMIPS_RELO_VECTOR_CONTROL_1 0x00038000
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#define BMIPS_NMI_RESET_VEC 0x80000000
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#define BMIPS_WARM_RESTART_VEC 0x80000380
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#define ZSCM_REG_BASE 0x97000000
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#if !defined(__ASSEMBLY__)
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#include <linux/cpumask.h>
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#include <asm/r4kcache.h>
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#include <asm/smp-ops.h>
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extern struct plat_smp_ops bmips43xx_smp_ops;
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extern struct plat_smp_ops bmips5000_smp_ops;
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static inline int register_bmips_smp_ops(void)
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{
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#if IS_ENABLED(CONFIG_CPU_BMIPS) && IS_ENABLED(CONFIG_SMP)
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switch (current_cpu_type()) {
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case CPU_BMIPS32:
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case CPU_BMIPS3300:
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return register_up_smp_ops();
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case CPU_BMIPS4350:
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case CPU_BMIPS4380:
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register_smp_ops(&bmips43xx_smp_ops);
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break;
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case CPU_BMIPS5000:
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register_smp_ops(&bmips5000_smp_ops);
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break;
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default:
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return -ENODEV;
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}
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return 0;
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#else
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return -ENODEV;
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#endif
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}
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extern char bmips_reset_nmi_vec[];
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extern char bmips_reset_nmi_vec_end[];
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extern char bmips_smp_movevec[];
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extern char bmips_smp_int_vec[];
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extern char bmips_smp_int_vec_end[];
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extern int bmips_smp_enabled;
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extern int bmips_cpu_offset;
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extern cpumask_t bmips_booted_mask;
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extern unsigned long bmips_tp1_irqs;
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extern void bmips_ebase_setup(void);
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extern asmlinkage void plat_wired_tlb_setup(void);
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extern void bmips_cpu_setup(void);
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static inline unsigned long bmips_read_zscm_reg(unsigned int offset)
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{
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unsigned long ret;
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barrier();
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cache_op(Index_Load_Tag_S, ZSCM_REG_BASE + offset);
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__sync();
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_ssnop();
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_ssnop();
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_ssnop();
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_ssnop();
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_ssnop();
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_ssnop();
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_ssnop();
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ret = read_c0_ddatalo();
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_ssnop();
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return ret;
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}
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static inline void bmips_write_zscm_reg(unsigned int offset, unsigned long data)
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{
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write_c0_ddatalo(data);
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_ssnop();
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_ssnop();
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_ssnop();
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cache_op(Index_Store_Tag_S, ZSCM_REG_BASE + offset);
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_ssnop();
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_ssnop();
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_ssnop();
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barrier();
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}
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static inline void bmips_post_dma_flush(struct device *dev)
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{
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void __iomem *cbr = BMIPS_GET_CBR();
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u32 cfg;
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if (boot_cpu_type() != CPU_BMIPS3300 &&
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boot_cpu_type() != CPU_BMIPS4350 &&
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boot_cpu_type() != CPU_BMIPS4380)
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return;
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/* Flush stale data out of the readahead cache */
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cfg = __raw_readl(cbr + BMIPS_RAC_CONFIG);
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__raw_writel(cfg | 0x100, cbr + BMIPS_RAC_CONFIG);
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__raw_readl(cbr + BMIPS_RAC_CONFIG);
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}
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#endif /* !defined(__ASSEMBLY__) */
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#endif /* _ASM_BMIPS_H */
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