133 строки
6.3 KiB
C
133 строки
6.3 KiB
C
/*
|
|
* lppaca.h
|
|
* Copyright (C) 2001 Mike Corrigan IBM Corporation
|
|
*
|
|
* 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, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#ifndef _ASM_LPPACA_H
|
|
#define _ASM_LPPACA_H
|
|
|
|
//=============================================================================
|
|
//
|
|
// This control block contains the data that is shared between the
|
|
// hypervisor (PLIC) and the OS.
|
|
//
|
|
//
|
|
//----------------------------------------------------------------------------
|
|
#include <asm/types.h>
|
|
|
|
struct lppaca
|
|
{
|
|
//=============================================================================
|
|
// CACHE_LINE_1 0x0000 - 0x007F Contains read-only data
|
|
// NOTE: The xDynXyz fields are fields that will be dynamically changed by
|
|
// PLIC when preparing to bring a processor online or when dispatching a
|
|
// virtual processor!
|
|
//=============================================================================
|
|
u32 desc; // Eye catcher 0xD397D781 x00-x03
|
|
u16 size; // Size of this struct x04-x05
|
|
u16 reserved1; // Reserved x06-x07
|
|
u16 reserved2:14; // Reserved x08-x09
|
|
u8 shared_proc:1; // Shared processor indicator ...
|
|
u8 secondary_thread:1; // Secondary thread indicator ...
|
|
volatile u8 dyn_proc_status:8; // Dynamic Status of this proc x0A-x0A
|
|
u8 secondary_thread_count; // Secondary thread count x0B-x0B
|
|
volatile u16 dyn_hv_phys_proc_index;// Dynamic HV Physical Proc Index0C-x0D
|
|
volatile u16 dyn_hv_log_proc_index;// Dynamic HV Logical Proc Indexx0E-x0F
|
|
u32 decr_val; // Value for Decr programming x10-x13
|
|
u32 pmc_val; // Value for PMC regs x14-x17
|
|
volatile u32 dyn_hw_node_id; // Dynamic Hardware Node id x18-x1B
|
|
volatile u32 dyn_hw_proc_id; // Dynamic Hardware Proc Id x1C-x1F
|
|
volatile u32 dyn_pir; // Dynamic ProcIdReg value x20-x23
|
|
u32 dsei_data; // DSEI data x24-x27
|
|
u64 sprg3; // SPRG3 value x28-x2F
|
|
u8 reserved3[80]; // Reserved x30-x7F
|
|
|
|
//=============================================================================
|
|
// CACHE_LINE_2 0x0080 - 0x00FF Contains local read-write data
|
|
//=============================================================================
|
|
// This Dword contains a byte for each type of interrupt that can occur.
|
|
// The IPI is a count while the others are just a binary 1 or 0.
|
|
union {
|
|
u64 any_int;
|
|
struct {
|
|
u16 reserved; // Reserved - cleared by #mpasmbl
|
|
u8 xirr_int; // Indicates xXirrValue is valid or Immed IO
|
|
u8 ipi_cnt; // IPI Count
|
|
u8 decr_int; // DECR interrupt occurred
|
|
u8 pdc_int; // PDC interrupt occurred
|
|
u8 quantum_int; // Interrupt quantum reached
|
|
u8 old_plic_deferred_ext_int; // Old PLIC has a deferred XIRR pending
|
|
} fields;
|
|
} int_dword;
|
|
|
|
// Whenever any fields in this Dword are set then PLIC will defer the
|
|
// processing of external interrupts. Note that PLIC will store the
|
|
// XIRR directly into the xXirrValue field so that another XIRR will
|
|
// not be presented until this one clears. The layout of the low
|
|
// 4-bytes of this Dword is upto SLIC - PLIC just checks whether the
|
|
// entire Dword is zero or not. A non-zero value in the low order
|
|
// 2-bytes will result in SLIC being granted the highest thread
|
|
// priority upon return. A 0 will return to SLIC as medium priority.
|
|
u64 plic_defer_ints_area; // Entire Dword
|
|
|
|
// Used to pass the real SRR0/1 from PLIC to SLIC as well as to
|
|
// pass the target SRR0/1 from SLIC to PLIC on a SetAsrAndRfid.
|
|
u64 saved_srr0; // Saved SRR0 x10-x17
|
|
u64 saved_srr1; // Saved SRR1 x18-x1F
|
|
|
|
// Used to pass parms from the OS to PLIC for SetAsrAndRfid
|
|
u64 saved_gpr3; // Saved GPR3 x20-x27
|
|
u64 saved_gpr4; // Saved GPR4 x28-x2F
|
|
u64 saved_gpr5; // Saved GPR5 x30-x37
|
|
|
|
u8 reserved4; // Reserved x38-x38
|
|
u8 cpuctls_task_attrs; // Task attributes for cpuctls x39-x39
|
|
u8 fpregs_in_use; // FP regs in use x3A-x3A
|
|
u8 pmcregs_in_use; // PMC regs in use x3B-x3B
|
|
volatile u32 saved_decr; // Saved Decr Value x3C-x3F
|
|
volatile u64 emulated_time_base;// Emulated TB for this thread x40-x47
|
|
volatile u64 cur_plic_latency; // Unaccounted PLIC latency x48-x4F
|
|
u64 tot_plic_latency; // Accumulated PLIC latency x50-x57
|
|
u64 wait_state_cycles; // Wait cycles for this proc x58-x5F
|
|
u64 end_of_quantum; // TB at end of quantum x60-x67
|
|
u64 pdc_saved_sprg1; // Saved SPRG1 for PMC int x68-x6F
|
|
u64 pdc_saved_srr0; // Saved SRR0 for PMC int x70-x77
|
|
volatile u32 virtual_decr; // Virtual DECR for shared procsx78-x7B
|
|
u16 slb_count; // # of SLBs to maintain x7C-x7D
|
|
u8 idle; // Indicate OS is idle x7E
|
|
u8 reserved5; // Reserved x7F
|
|
|
|
|
|
//=============================================================================
|
|
// CACHE_LINE_3 0x0100 - 0x007F: This line is shared with other processors
|
|
//=============================================================================
|
|
// This is the yield_count. An "odd" value (low bit on) means that
|
|
// the processor is yielded (either because of an OS yield or a PLIC
|
|
// preempt). An even value implies that the processor is currently
|
|
// executing.
|
|
// NOTE: This value will ALWAYS be zero for dedicated processors and
|
|
// will NEVER be zero for shared processors (ie, initialized to a 1).
|
|
volatile u32 yield_count; // PLIC increments each dispatchx00-x03
|
|
u8 reserved6[124]; // Reserved x04-x7F
|
|
|
|
//=============================================================================
|
|
// CACHE_LINE_4-5 0x0100 - 0x01FF Contains PMC interrupt data
|
|
//=============================================================================
|
|
u8 pmc_save_area[256]; // PMC interrupt Area x00-xFF
|
|
};
|
|
|
|
#endif /* _ASM_LPPACA_H */
|