diff options
Diffstat (limited to 'arch/s390/include/asm/uv.h')
| -rw-r--r-- | arch/s390/include/asm/uv.h | 251 |
1 files changed, 244 insertions, 7 deletions
diff --git a/arch/s390/include/asm/uv.h b/arch/s390/include/asm/uv.h index 4093a2856929..cff4b4c99b75 100644 --- a/arch/s390/include/asm/uv.h +++ b/arch/s390/include/asm/uv.h @@ -14,23 +14,62 @@ #include <linux/types.h> #include <linux/errno.h> #include <linux/bug.h> +#include <linux/sched.h> #include <asm/page.h> +#include <asm/gmap.h> #define UVC_RC_EXECUTED 0x0001 #define UVC_RC_INV_CMD 0x0002 #define UVC_RC_INV_STATE 0x0003 #define UVC_RC_INV_LEN 0x0005 #define UVC_RC_NO_RESUME 0x0007 +#define UVC_RC_NEED_DESTROY 0x8000 #define UVC_CMD_QUI 0x0001 +#define UVC_CMD_INIT_UV 0x000f +#define UVC_CMD_CREATE_SEC_CONF 0x0100 +#define UVC_CMD_DESTROY_SEC_CONF 0x0101 +#define UVC_CMD_CREATE_SEC_CPU 0x0120 +#define UVC_CMD_DESTROY_SEC_CPU 0x0121 +#define UVC_CMD_CONV_TO_SEC_STOR 0x0200 +#define UVC_CMD_CONV_FROM_SEC_STOR 0x0201 +#define UVC_CMD_SET_SEC_CONF_PARAMS 0x0300 +#define UVC_CMD_UNPACK_IMG 0x0301 +#define UVC_CMD_VERIFY_IMG 0x0302 +#define UVC_CMD_CPU_RESET 0x0310 +#define UVC_CMD_CPU_RESET_INITIAL 0x0311 +#define UVC_CMD_PREPARE_RESET 0x0320 +#define UVC_CMD_CPU_RESET_CLEAR 0x0321 +#define UVC_CMD_CPU_SET_STATE 0x0330 +#define UVC_CMD_SET_UNSHARE_ALL 0x0340 +#define UVC_CMD_PIN_PAGE_SHARED 0x0341 +#define UVC_CMD_UNPIN_PAGE_SHARED 0x0342 #define UVC_CMD_SET_SHARED_ACCESS 0x1000 #define UVC_CMD_REMOVE_SHARED_ACCESS 0x1001 /* Bits in installed uv calls */ enum uv_cmds_inst { BIT_UVC_CMD_QUI = 0, + BIT_UVC_CMD_INIT_UV = 1, + BIT_UVC_CMD_CREATE_SEC_CONF = 2, + BIT_UVC_CMD_DESTROY_SEC_CONF = 3, + BIT_UVC_CMD_CREATE_SEC_CPU = 4, + BIT_UVC_CMD_DESTROY_SEC_CPU = 5, + BIT_UVC_CMD_CONV_TO_SEC_STOR = 6, + BIT_UVC_CMD_CONV_FROM_SEC_STOR = 7, BIT_UVC_CMD_SET_SHARED_ACCESS = 8, BIT_UVC_CMD_REMOVE_SHARED_ACCESS = 9, + BIT_UVC_CMD_SET_SEC_PARMS = 11, + BIT_UVC_CMD_UNPACK_IMG = 13, + BIT_UVC_CMD_VERIFY_IMG = 14, + BIT_UVC_CMD_CPU_RESET = 15, + BIT_UVC_CMD_CPU_RESET_INITIAL = 16, + BIT_UVC_CMD_CPU_SET_STATE = 17, + BIT_UVC_CMD_PREPARE_RESET = 18, + BIT_UVC_CMD_CPU_PERFORM_CLEAR_RESET = 19, + BIT_UVC_CMD_UNSHARE_ALL = 20, + BIT_UVC_CMD_PIN_PAGE_SHARED = 21, + BIT_UVC_CMD_UNPIN_PAGE_SHARED = 22, }; struct uv_cb_header { @@ -40,13 +79,127 @@ struct uv_cb_header { u16 rrc; /* Return Reason Code */ } __packed __aligned(8); +/* Query Ultravisor Information */ struct uv_cb_qui { struct uv_cb_header header; u64 reserved08; u64 inst_calls_list[4]; - u64 reserved30[15]; + u64 reserved30[2]; + u64 uv_base_stor_len; + u64 reserved48; + u64 conf_base_phys_stor_len; + u64 conf_base_virt_stor_len; + u64 conf_virt_var_stor_len; + u64 cpu_stor_len; + u32 reserved70[3]; + u32 max_num_sec_conf; + u64 max_guest_stor_addr; + u8 reserved88[158 - 136]; + u16 max_guest_cpus; + u8 reserveda0[200 - 160]; } __packed __aligned(8); +/* Initialize Ultravisor */ +struct uv_cb_init { + struct uv_cb_header header; + u64 reserved08[2]; + u64 stor_origin; + u64 stor_len; + u64 reserved28[4]; +} __packed __aligned(8); + +/* Create Guest Configuration */ +struct uv_cb_cgc { + struct uv_cb_header header; + u64 reserved08[2]; + u64 guest_handle; + u64 conf_base_stor_origin; + u64 conf_virt_stor_origin; + u64 reserved30; + u64 guest_stor_origin; + u64 guest_stor_len; + u64 guest_sca; + u64 guest_asce; + u64 reserved58[5]; +} __packed __aligned(8); + +/* Create Secure CPU */ +struct uv_cb_csc { + struct uv_cb_header header; + u64 reserved08[2]; + u64 cpu_handle; + u64 guest_handle; + u64 stor_origin; + u8 reserved30[6]; + u16 num; + u64 state_origin; + u64 reserved40[4]; +} __packed __aligned(8); + +/* Convert to Secure */ +struct uv_cb_cts { + struct uv_cb_header header; + u64 reserved08[2]; + u64 guest_handle; + u64 gaddr; +} __packed __aligned(8); + +/* Convert from Secure / Pin Page Shared */ +struct uv_cb_cfs { + struct uv_cb_header header; + u64 reserved08[2]; + u64 paddr; +} __packed __aligned(8); + +/* Set Secure Config Parameter */ +struct uv_cb_ssc { + struct uv_cb_header header; + u64 reserved08[2]; + u64 guest_handle; + u64 sec_header_origin; + u32 sec_header_len; + u32 reserved2c; + u64 reserved30[4]; +} __packed __aligned(8); + +/* Unpack */ +struct uv_cb_unp { + struct uv_cb_header header; + u64 reserved08[2]; + u64 guest_handle; + u64 gaddr; + u64 tweak[2]; + u64 reserved38[3]; +} __packed __aligned(8); + +#define PV_CPU_STATE_OPR 1 +#define PV_CPU_STATE_STP 2 +#define PV_CPU_STATE_CHKSTP 3 +#define PV_CPU_STATE_OPR_LOAD 5 + +struct uv_cb_cpu_set_state { + struct uv_cb_header header; + u64 reserved08[2]; + u64 cpu_handle; + u8 reserved20[7]; + u8 state; + u64 reserved28[5]; +}; + +/* + * A common UV call struct for calls that take no payload + * Examples: + * Destroy cpu/config + * Verify + */ +struct uv_cb_nodata { + struct uv_cb_header header; + u64 reserved08[2]; + u64 handle; + u64 reserved20[4]; +} __packed __aligned(8); + +/* Set Shared Access */ struct uv_cb_share { struct uv_cb_header header; u64 reserved08[3]; @@ -54,21 +207,76 @@ struct uv_cb_share { u64 reserved28; } __packed __aligned(8); -static inline int uv_call(unsigned long r1, unsigned long r2) +static inline int __uv_call(unsigned long r1, unsigned long r2) { int cc; asm volatile( - "0: .insn rrf,0xB9A40000,%[r1],%[r2],0,0\n" - " brc 3,0b\n" - " ipm %[cc]\n" - " srl %[cc],28\n" + " .insn rrf,0xB9A40000,%[r1],%[r2],0,0\n" + " ipm %[cc]\n" + " srl %[cc],28\n" : [cc] "=d" (cc) : [r1] "a" (r1), [r2] "a" (r2) : "memory", "cc"); return cc; } +static inline int uv_call(unsigned long r1, unsigned long r2) +{ + int cc; + + do { + cc = __uv_call(r1, r2); + } while (cc > 1); + return cc; +} + +/* Low level uv_call that avoids stalls for long running busy conditions */ +static inline int uv_call_sched(unsigned long r1, unsigned long r2) +{ + int cc; + + do { + cc = __uv_call(r1, r2); + cond_resched(); + } while (cc > 1); + return cc; +} + +/* + * special variant of uv_call that only transports the cpu or guest + * handle and the command, like destroy or verify. + */ +static inline int uv_cmd_nodata(u64 handle, u16 cmd, u16 *rc, u16 *rrc) +{ + struct uv_cb_nodata uvcb = { + .header.cmd = cmd, + .header.len = sizeof(uvcb), + .handle = handle, + }; + int cc; + + WARN(!handle, "No handle provided to Ultravisor call cmd %x\n", cmd); + cc = uv_call_sched(0, (u64)&uvcb); + *rc = uvcb.header.rc; + *rrc = uvcb.header.rrc; + return cc ? -EINVAL : 0; +} + +struct uv_info { + unsigned long inst_calls_list[4]; + unsigned long uv_base_stor_len; + unsigned long guest_base_stor_len; + unsigned long guest_virt_base_stor_len; + unsigned long guest_virt_var_stor_len; + unsigned long guest_cpu_stor_len; + unsigned long max_sec_stor_addr; + unsigned int max_num_sec_conf; + unsigned short max_guest_cpus; +}; + +extern struct uv_info uv_info; + #ifdef CONFIG_PROTECTED_VIRTUALIZATION_GUEST extern int prot_virt_guest; @@ -121,11 +329,40 @@ static inline int uv_remove_shared(unsigned long addr) return share(addr, UVC_CMD_REMOVE_SHARED_ACCESS); } -void uv_query_info(void); #else #define is_prot_virt_guest() 0 static inline int uv_set_shared(unsigned long addr) { return 0; } static inline int uv_remove_shared(unsigned long addr) { return 0; } +#endif + +#if IS_ENABLED(CONFIG_KVM) +extern int prot_virt_host; + +static inline int is_prot_virt_host(void) +{ + return prot_virt_host; +} + +int gmap_make_secure(struct gmap *gmap, unsigned long gaddr, void *uvcb); +int uv_convert_from_secure(unsigned long paddr); +int gmap_convert_to_secure(struct gmap *gmap, unsigned long gaddr); + +void setup_uv(void); +void adjust_to_uv_max(unsigned long *vmax); +#else +#define is_prot_virt_host() 0 +static inline void setup_uv(void) {} +static inline void adjust_to_uv_max(unsigned long *vmax) {} + +static inline int uv_convert_from_secure(unsigned long paddr) +{ + return 0; +} +#endif + +#if defined(CONFIG_PROTECTED_VIRTUALIZATION_GUEST) || IS_ENABLED(CONFIG_KVM) +void uv_query_info(void); +#else static inline void uv_query_info(void) {} #endif |