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acrn-hypervisor/hypervisor/include/arch/x86/softirq.h

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initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
/*
* Copyright (C) 2018 Intel Corporation. All rights reserved.
*
license: Replace license text with SPDX tag Replace the BSD-3-Clause boiler plate license text with an SPDX tag. Fixes: #189 Signed-off-by: David B. Kinder <david.b.kinder@intel.com>
2018-05-26 01:49:13 +08:00
* SPDX-License-Identifier: BSD-3-Clause
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
*/
#ifndef SOFTIRQ_H
#define SOFTIRQ_H
HV:treewide:Update return type of function ffs64 and ffz64 To reduce type conversion in HV: Update return type of function ffs64 and ffz64 as uint16; For ffs64, when the input is zero, INVALID_BIT_INDEX is returned; Update temporary variable type and return value check of caller when it call ffs64 or ffz64; Note: In the allocate_mem, there is no return value checking for calling ffz64, this will be updated latter. V1-->V2: INVALID_BIT_INDEX instead of INVALID_NUMBER Coding style fixing; INVALID_CPU_ID instead of INVALID_PCPU_ID or INVALID_VCPU_ID; "%hu" is used to print vcpu id (uint16_t); Add "U/UL" for constant value as needed. V2-->V3: ffs64 return INVALID_BIT_INDEX directly when the input value is zero; Remove excess "%hu" updates. V3-->V4: Clean up the comments of ffs64; Add "U" for constant value as needed. Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-07-02 14:05:58 +08:00
#define SOFTIRQ_TIMER 0U
#define SOFTIRQ_DEV_ASSIGN 1U
#define SOFTIRQ_MAX 2U
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
#define SOFTIRQ_MASK ((1UL<<SOFTIRQ_MAX)-1)
/* used for atomic value for prevent recursive */
HV:treewide:Cleanup the type for parameters of bitmap operations For reducing sign conversion in hypervisor: Update parameters of bitmap operations as unsigned type; Update the input of related caller as unsigned type when the caller's input parameter is const variable or the variable is only used by bitmap operations. V1-->V2: (1) Explicit casting for the first parameter of all bitmap operations; (2) Remove mask operation for explicit casting of all bitmap operations, since masking is useless. Otherwise, this trucation is dangerous. V2-->V3: (1) Explicit casting for all bitmap operations parameter; (2) Masking bit offset with 6-bit; (3) Add few comments about bit offset. V3-->V4: add '\' for some statement of bitmap macro Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-30 00:17:34 +08:00
#define SOFTIRQ_ATOMIC 63U
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
HV: treewide: enforce unsignedness of pcpu_id In the hypervisor, physical cpu id is defined as "int" or "uint32_t" type in the hypervisor. So there are some sign conversion issues about physical cpu id (pcpu_id) reported by static analysis tool. Sign conversion violates the rules of MISRA C:2012. In this patch, define physical cpu id as "uint16_t" type for all modules in the hypervisor and change related codes. The valid range of pcpu_id is 0~65534, INVALID_PCPU_ID is defined to the invalid pcpu_id for error detection, BROADCAST_PCPU_ID is broadcast pcpu_id used to notify all valid pcpu. The type of pcpu_id in the struct vcpu and vcpu_id is "int" type, this will be fixed in another patch. V1-->V2: * Change the type of pcpu_id from uint32_t to uint16_t; * Define INVALID_PCPU_ID for error detection; * Define BROADCAST_PCPU_ID to notify all valid pcpu. V2-->V3: * Update comments for INVALID_PCPU_ID and BROADCAST_PCPU_ID; * Update addtional pcpu_id; * Convert hexadecimals to unsigned to meet the type of pcpu_id; * Clean up for MIN_PCPU_ID and MAX_PCPU_ID, they will be defined by configuration. Note: fix bug in the init_lapic(), the pcpu_id shall be less than 8, this is constraint by implement in the init_lapic(). Signed-off-by: Xiangyang Wu <xiangyang.wu@intel.com> Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-06-20 15:42:52 +08:00
void enable_softirq(uint16_t cpu_id);
void disable_softirq(uint16_t cpu_id);
initial import internal commit: 14ac2bc2299032fa6714d1fefa7cf0987b3e3085 Signed-off-by: Eddie Dong <eddie.dong@intel.com>
2018-03-07 20:57:14 +08:00
void init_softirq(void);
void raise_softirq(int softirq_id);
void exec_softirq(void);
#endif /* SOFTIRQ_H */