forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
152 lines
4.8 KiB
152 lines
4.8 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
/* n2rng.h: Niagara2 RNG defines. |
|
* |
|
* Copyright (C) 2008 David S. Miller <[email protected]> |
|
*/ |
|
|
|
#ifndef _N2RNG_H |
|
#define _N2RNG_H |
|
|
|
/* ver1 devices - n2-rng, vf-rng, kt-rng */ |
|
#define RNG_v1_CTL_WAIT 0x0000000001fffe00ULL /* Minimum wait time */ |
|
#define RNG_v1_CTL_WAIT_SHIFT 9 |
|
#define RNG_v1_CTL_BYPASS 0x0000000000000100ULL /* VCO voltage source */ |
|
#define RNG_v1_CTL_VCO 0x00000000000000c0ULL /* VCO rate control */ |
|
#define RNG_v1_CTL_VCO_SHIFT 6 |
|
#define RNG_v1_CTL_ASEL 0x0000000000000030ULL /* Analog MUX select */ |
|
#define RNG_v1_CTL_ASEL_SHIFT 4 |
|
#define RNG_v1_CTL_ASEL_NOOUT 2 |
|
|
|
/* these are the same in v2 as in v1 */ |
|
#define RNG_CTL_LFSR 0x0000000000000008ULL /* Use LFSR or plain shift */ |
|
#define RNG_CTL_ES3 0x0000000000000004ULL /* Enable entropy source 3 */ |
|
#define RNG_CTL_ES2 0x0000000000000002ULL /* Enable entropy source 2 */ |
|
#define RNG_CTL_ES1 0x0000000000000001ULL /* Enable entropy source 1 */ |
|
|
|
/* ver2 devices - m4-rng, m7-rng */ |
|
#define RNG_v2_CTL_WAIT 0x0000000007fff800ULL /* Minimum wait time */ |
|
#define RNG_v2_CTL_WAIT_SHIFT 12 |
|
#define RNG_v2_CTL_BYPASS 0x0000000000000400ULL /* VCO voltage source */ |
|
#define RNG_v2_CTL_VCO 0x0000000000000300ULL /* VCO rate control */ |
|
#define RNG_v2_CTL_VCO_SHIFT 9 |
|
#define RNG_v2_CTL_PERF 0x0000000000000180ULL /* Perf */ |
|
#define RNG_v2_CTL_ASEL 0x0000000000000070ULL /* Analog MUX select */ |
|
#define RNG_v2_CTL_ASEL_SHIFT 4 |
|
#define RNG_v2_CTL_ASEL_NOOUT 7 |
|
|
|
|
|
#define HV_FAST_RNG_GET_DIAG_CTL 0x130 |
|
#define HV_FAST_RNG_CTL_READ 0x131 |
|
#define HV_FAST_RNG_CTL_WRITE 0x132 |
|
#define HV_FAST_RNG_DATA_READ_DIAG 0x133 |
|
#define HV_FAST_RNG_DATA_READ 0x134 |
|
|
|
#define HV_RNG_STATE_UNCONFIGURED 0 |
|
#define HV_RNG_STATE_CONFIGURED 1 |
|
#define HV_RNG_STATE_HEALTHCHECK 2 |
|
#define HV_RNG_STATE_ERROR 3 |
|
|
|
#define HV_RNG_NUM_CONTROL 4 |
|
|
|
#ifndef __ASSEMBLY__ |
|
extern unsigned long sun4v_rng_get_diag_ctl(void); |
|
extern unsigned long sun4v_rng_ctl_read_v1(unsigned long ctl_regs_ra, |
|
unsigned long *state, |
|
unsigned long *tick_delta); |
|
extern unsigned long sun4v_rng_ctl_read_v2(unsigned long ctl_regs_ra, |
|
unsigned long unit, |
|
unsigned long *state, |
|
unsigned long *tick_delta, |
|
unsigned long *watchdog, |
|
unsigned long *write_status); |
|
extern unsigned long sun4v_rng_ctl_write_v1(unsigned long ctl_regs_ra, |
|
unsigned long state, |
|
unsigned long write_timeout, |
|
unsigned long *tick_delta); |
|
extern unsigned long sun4v_rng_ctl_write_v2(unsigned long ctl_regs_ra, |
|
unsigned long state, |
|
unsigned long write_timeout, |
|
unsigned long unit); |
|
extern unsigned long sun4v_rng_data_read_diag_v1(unsigned long data_ra, |
|
unsigned long len, |
|
unsigned long *tick_delta); |
|
extern unsigned long sun4v_rng_data_read_diag_v2(unsigned long data_ra, |
|
unsigned long len, |
|
unsigned long unit, |
|
unsigned long *tick_delta); |
|
extern unsigned long sun4v_rng_data_read(unsigned long data_ra, |
|
unsigned long *tick_delta); |
|
|
|
enum n2rng_compat_id { |
|
N2_n2_rng, |
|
N2_vf_rng, |
|
N2_kt_rng, |
|
N2_m4_rng, |
|
N2_m7_rng, |
|
}; |
|
|
|
struct n2rng_template { |
|
enum n2rng_compat_id id; |
|
int multi_capable; |
|
int chip_version; |
|
}; |
|
|
|
struct n2rng_unit { |
|
u64 control[HV_RNG_NUM_CONTROL]; |
|
}; |
|
|
|
struct n2rng { |
|
struct platform_device *op; |
|
|
|
unsigned long flags; |
|
#define N2RNG_FLAG_MULTI 0x00000001 /* Multi-unit capable RNG */ |
|
#define N2RNG_FLAG_CONTROL 0x00000002 /* Operating in control domain */ |
|
#define N2RNG_FLAG_READY 0x00000008 /* Ready for hw-rng layer */ |
|
#define N2RNG_FLAG_SHUTDOWN 0x00000010 /* Driver unregistering */ |
|
#define N2RNG_FLAG_BUFFER_VALID 0x00000020 /* u32 buffer holds valid data */ |
|
|
|
struct n2rng_template *data; |
|
int num_units; |
|
struct n2rng_unit *units; |
|
|
|
struct hwrng hwrng; |
|
u32 buffer; |
|
|
|
/* Registered hypervisor group API major and minor version. */ |
|
unsigned long hvapi_major; |
|
unsigned long hvapi_minor; |
|
|
|
struct delayed_work work; |
|
|
|
unsigned long hv_state; /* HV_RNG_STATE_foo */ |
|
|
|
unsigned long health_check_sec; |
|
unsigned long accum_cycles; |
|
unsigned long wd_timeo; |
|
#define N2RNG_HEALTH_CHECK_SEC_DEFAULT 0 |
|
#define N2RNG_ACCUM_CYCLES_DEFAULT 2048 |
|
#define N2RNG_WD_TIMEO_DEFAULT 0 |
|
|
|
u64 scratch_control[HV_RNG_NUM_CONTROL]; |
|
|
|
#define RNG_v1_SELFTEST_TICKS 38859 |
|
#define RNG_v1_SELFTEST_VAL ((u64)0xB8820C7BD387E32C) |
|
#define RNG_v2_SELFTEST_TICKS 64 |
|
#define RNG_v2_SELFTEST_VAL ((u64)0xffffffffffffffff) |
|
#define SELFTEST_POLY ((u64)0x231DCEE91262B8A3) |
|
#define SELFTEST_MATCH_GOAL 6 |
|
#define SELFTEST_LOOPS_MAX 40000 |
|
#define SELFTEST_BUFFER_WORDS 8 |
|
|
|
u64 test_data; |
|
u64 test_control[HV_RNG_NUM_CONTROL]; |
|
u64 test_buffer[SELFTEST_BUFFER_WORDS]; |
|
}; |
|
|
|
#define N2RNG_BLOCK_LIMIT 60000 |
|
#define N2RNG_BUSY_LIMIT 100 |
|
#define N2RNG_HCHECK_LIMIT 100 |
|
|
|
#endif /* !(__ASSEMBLY__) */ |
|
|
|
#endif /* _N2RNG_H */
|
|
|