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arm_psci.h

arm_psci.h 2.0 KB
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  1. /*
    2. 

  2.  * Copyright (C) 2012,2013 - ARM Ltd
    3. 

  3.  * Author: Marc Zyngier <marc.zyngier@arm.com>
    4. 

  4.  *
    5. 

  5.  * This program is free software; you can redistribute it and/or modify
    6. 

  6.  * it under the terms of the GNU General Public License version 2 as
    7. 

  7.  * published by the Free Software Foundation.
    8. 

  8.  *
    9. 

  9.  * This program is distributed in the hope that it will be useful,
    10. 

  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11. 

  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12. 

  12.  * GNU General Public License for more details.
    13. 

  13.  *
    14. 

  14.  * You should have received a copy of the GNU General Public License
    15. 

  15.  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    16. 

  16.  */
    17. 

  17. 

  18. #ifndef __KVM_ARM_PSCI_H__
    19. 

  19. #define __KVM_ARM_PSCI_H__
    20. 

  20. 

  21. #include <linux/kvm_host.h>
    22. 

  22. #include <uapi/linux/psci.h>
    23. 

  23. 

  24. #define KVM_ARM_PSCI_0_1	PSCI_VERSION(0, 1)
    25. 

  25. #define KVM_ARM_PSCI_0_2	PSCI_VERSION(0, 2)
    26. 

  26. #define KVM_ARM_PSCI_1_0	PSCI_VERSION(1, 0)
    27. 

  27. 

  28. #define KVM_ARM_PSCI_LATEST	KVM_ARM_PSCI_1_0
    29. 

  29. 

  30. /*
    31. 

  31.  * We need the KVM pointer independently from the vcpu as we can call
    32. 

  32.  * this from HYP, and need to apply kern_hyp_va on it...
    33. 

  33.  */
    34. 

  34. static inline int kvm_psci_version(struct kvm_vcpu *vcpu, struct kvm *kvm)
    35. 

  35. {
    36. 

  36. 	/*
    37. 

  37. 	 * Our PSCI implementation stays the same across versions from
    38. 

  38. 	 * v0.2 onward, only adding the few mandatory functions (such
    39. 

  39. 	 * as FEATURES with 1.0) that are required by newer
    40. 

  40. 	 * revisions. It is thus safe to return the latest, unless
    41. 

  41. 	 * userspace has instructed us otherwise.
    42. 

  42. 	 */
    43. 

  43. 	if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features)) {
    44. 

  44. 		if (vcpu->kvm->arch.psci_version)
    45. 

  45. 			return vcpu->kvm->arch.psci_version;
    46. 

  46. 

  47. 		return KVM_ARM_PSCI_LATEST;
    48. 

  48. 	}
    49. 

  49. 

  50. 	return KVM_ARM_PSCI_0_1;
    51. 

  51. }
    52. 

  52. 

  53. 

  54. int kvm_hvc_call_handler(struct kvm_vcpu *vcpu);
    55. 

  55. 

  56. struct kvm_one_reg;
    57. 

  57. 

  58. int kvm_arm_get_fw_num_regs(struct kvm_vcpu *vcpu);
    59. 

  59. int kvm_arm_copy_fw_reg_indices(struct kvm_vcpu *vcpu, u64 __user *uindices);
    60. 

  60. int kvm_arm_get_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
    61. 

  61. int kvm_arm_set_fw_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg);
    62. 

  62. 

  63. #endif /* __KVM_ARM_PSCI_H__ */
    64. 

  64.