Add files to be able to compress and decompress files using the
powerpc NX-GZIP engine.
Signed-off-by: Bulent Abali <abali@xxxxxxxxxx>
Signed-off-by: Raphael Moreira Zinsly <rzinsly@xxxxxxxxxxxxx>
---
.../powerpc/nx-gzip/inc/copy-paste.h | 54 ++
.../selftests/powerpc/nx-gzip/inc/nx_dbg.h | 95 +++
.../selftests/powerpc/nx-gzip/inc/nxu.h | 651 ++++++++++++++++++
3 files changed, 800 insertions(+)
create mode 100644 tools/testing/selftests/powerpc/nx-gzip/inc/copy-paste.h
create mode 100644 tools/testing/selftests/powerpc/nx-gzip/inc/nx_dbg.h
create mode 100644 tools/testing/selftests/powerpc/nx-gzip/inc/nxu.h
diff --git a/tools/testing/selftests/powerpc/nx-gzip/inc/copy-paste.h b/tools/testing/selftests/powerpc/nx-gzip/inc/copy-paste.h
new file mode 100644
index 000000000000..107139b6c7df
--- /dev/null
+++ b/tools/testing/selftests/powerpc/nx-gzip/inc/copy-paste.h
@@ -0,0 +1,54 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include "nx-helpers.h"
+
+/*
+ * Macros taken from arch/powerpc/include/asm/ppc-opcode.h and other
+ * header files.
+ */
+#define ___PPC_RA(a) (((a) & 0x1f) << 16)
+#define ___PPC_RB(b) (((b) & 0x1f) << 11)
+
+#define PPC_INST_COPY 0x7c20060c
+#define PPC_INST_PASTE 0x7c20070d
+
+#define PPC_COPY(a, b) stringify_in_c(.long PPC_INST_COPY | \
+ ___PPC_RA(a) | ___PPC_RB(b))
+#define PPC_PASTE(a, b) stringify_in_c(.long PPC_INST_PASTE | \
+ ___PPC_RA(a) | ___PPC_RB(b))
+#define CR0_SHIFT 28
+#define CR0_MASK 0xF
+/*
+ * Copy/paste instructions:
+ *
+ * copy RA,RB
+ * Copy contents of address (RA) + effective_address(RB)
+ * to internal copy-buffer.
+ *
+ * paste RA,RB
+ * Paste contents of internal copy-buffer to the address
+ * (RA) + effective_address(RB)
+ */
+static inline int vas_copy(void *crb, int offset)
+{
+ asm volatile(PPC_COPY(%0, %1)";"
+ :
+ : "b" (offset), "b" (crb)
+ : "memory");
+
+ return 0;
+}
+
+static inline int vas_paste(void *paste_address, int offset)
+{
+ u32 cr;
+
+ cr = 0;
+ asm volatile(PPC_PASTE(%1, %2)";"
+ "mfocrf %0, 0x80;"
+ : "=r" (cr)
+ : "b" (offset), "b" (paste_address)
+ : "memory", "cr0");
+
+ return (cr >> CR0_SHIFT) & CR0_MASK;
+}
diff --git a/tools/testing/selftests/powerpc/nx-gzip/inc/nx_dbg.h b/tools/testing/selftests/powerpc/nx-gzip/inc/nx_dbg.h
new file mode 100644
index 000000000000..f2c0eee2317e
--- /dev/null
+++ b/tools/testing/selftests/powerpc/nx-gzip/inc/nx_dbg.h
@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Copyright 2020 IBM Corporation
+ *
+ */
+
+#ifndef _NXU_DBG_H_
+#define _NXU_DBG_H_
+
+#include <sys/file.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <time.h>
+#include <pthread.h>
+
+extern FILE * nx_gzip_log;
+extern int nx_gzip_trace;
+extern unsigned int nx_gzip_inflate_impl;
+extern unsigned int nx_gzip_deflate_impl;
+extern unsigned int nx_gzip_inflate_flags;
+extern unsigned int nx_gzip_deflate_flags;
+
+extern int nx_dbg;
+pthread_mutex_t mutex_log;
+
+#define nx_gzip_trace_enabled() (nx_gzip_trace & 0x1)
+#define nx_gzip_hw_trace_enabled() (nx_gzip_trace & 0x2)
+#define nx_gzip_sw_trace_enabled() (nx_gzip_trace & 0x4)
+#define nx_gzip_gather_statistics() (nx_gzip_trace & 0x8)
+#define nx_gzip_per_stream_stat() (nx_gzip_trace & 0x10)
+
+#define prt(fmt, ...) do { \
+ pthread_mutex_lock(&mutex_log); \
+ flock(nx_gzip_log->_fileno, LOCK_EX); \
+ time_t t; struct tm *m; time(&t); m = localtime(&t); \
+ fprintf(nx_gzip_log, "[%04d/%02d/%02d %02d:%02d:%02d] " \
+ "pid %d: " fmt, \
+ (int)m->tm_year + 1900, (int)m->tm_mon+1, (int)m->tm_mday, \
+ (int)m->tm_hour, (int)m->tm_min, (int)m->tm_sec, \
+ (int)getpid(), ## __VA_ARGS__); \
+ fflush(nx_gzip_log); \
+ flock(nx_gzip_log->_fileno, LOCK_UN); \
+ pthread_mutex_unlock(&mutex_log); \
+} while (0)
+
+/* Use in case of an error */
+#define prt_err(fmt, ...) do { if (nx_dbg >= 0) { \
+ prt("%s:%u: Error: "fmt, \
+ __FILE__, __LINE__, ## __VA_ARGS__); \
+}} while (0)
+
+/* Use in case of an warning */
+#define prt_warn(fmt, ...) do { if (nx_dbg >= 1) { \
+ prt("%s:%u: Warning: "fmt, \
+ __FILE__, __LINE__, ## __VA_ARGS__); \
+}} while (0)
+
+/* Informational printouts */
+#define prt_info(fmt, ...) do { if (nx_dbg >= 2) { \
+ prt("Info: "fmt, ## __VA_ARGS__); \
+}} while (0)
+
+/* Trace zlib wrapper code */
+#define prt_trace(fmt, ...) do { if (nx_gzip_trace_enabled()) { \
+ prt("### "fmt, ## __VA_ARGS__); \
+}} while (0)
+
+/* Trace statistics */
+#define prt_stat(fmt, ...) do { if (nx_gzip_gather_statistics()) { \
+ prt("### "fmt, ## __VA_ARGS__); \
+}} while (0)
+
+/* Trace zlib hardware implementation */
+#define hw_trace(fmt, ...) do { \
+ if (nx_gzip_hw_trace_enabled()) \
+ fprintf(nx_gzip_log, "hhh " fmt, ## __VA_ARGS__); \
+ } while (0)
+
+/* Trace zlib software implementation */
+#define sw_trace(fmt, ...) do { \
+ if (nx_gzip_sw_trace_enabled()) \
+ fprintf(nx_gzip_log, "sss " fmt, ## __VA_ARGS__); \
+ } while (0)
+
+
+/**
+ * str_to_num - Convert string into number and copy with endings like
+ * KiB for kilobyte
+ * MiB for megabyte
+ * GiB for gigabyte
+ */
+uint64_t str_to_num(char *str);
+void nx_lib_debug(int onoff);
+
+#endif /* _NXU_DBG_H_ */
diff --git a/tools/testing/selftests/powerpc/nx-gzip/inc/nxu.h b/tools/testing/selftests/powerpc/nx-gzip/inc/nxu.h
new file mode 100644
index 000000000000..a5cfe8dd0107
--- /dev/null
+++ b/tools/testing/selftests/powerpc/nx-gzip/inc/nxu.h
@@ -0,0 +1,651 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later
+ *
+ * Hardware interface of the NX-GZIP compression accelerator
+ *
+ * Copyright (C) IBM Corporation, 2020
+ *
+ * Author: Bulent Abali <abali@xxxxxxxxxx>
+ *
+ */
+
+#ifndef _NXU_H
+#define _NXU_H
+
+#include <stdint.h>
+#include <endian.h>
+#include "nx.h"
+
+/* deflate */
+#define LLSZ 286
+#define DSZ 30
+
+/* nx */
+#define DHTSZ 18
+#define DHT_MAXSZ 288
+#define MAX_DDE_COUNT 256
+
+/* util */
+#ifdef NXDBG
+#define NXPRT(X) X
+#else
+#define NXPRT(X)
+#endif
+
+#ifdef NXTIMER
+#include <sys/platform/ppc.h>
+#define NX_CLK(X) X
+#define nx_get_time() __ppc_get_timebase()
+#define nx_get_freq() __ppc_get_timebase_freq()
+#else
+#define NX_CLK(X)
+#define nx_get_time() (-1)
+#define nx_get_freq() (-1)
+#endif
+
+/*
+ * Definitions of acronyms used here. See
+ * P9 NX Gzip Accelerator User's Manual for details:
+ * https://github.com/libnxz/power-gzip/blob/develop/doc/power_nx_gzip_um.pdf
+ *
+ * adler/crc: 32 bit checksums appended to stream tail
+ * ce: completion extension
+ * cpb: coprocessor parameter block (metadata)
+ * crb: coprocessor request block (command)
+ * csb: coprocessor status block (status)
+ * dht: dynamic huffman table
+ * dde: data descriptor element (address, length)
+ * ddl: list of ddes
+ * dh/fh: dynamic and fixed huffman types
+ * fc: coprocessor function code
+ * histlen: history/dictionary length
+ * history: sliding window of up to 32KB of data
+ * lzcount: Deflate LZ symbol counts
+ * rembytecnt: remaining byte count
+ * sfbt: source final block type; last block's type during decomp
+ * spbc: source processed byte count
+ * subc: source unprocessed bit count
+ * tebc: target ending bit count; valid bits in the last byte
+ * tpbc: target processed byte count
+ * vas: virtual accelerator switch; the user mode interface
+ */
+
+union nx_qw_t {
+ uint32_t word[4];
+ uint64_t dword[2];
+} __aligned(16);
+
+/*
+ * Note: NX registers with fewer than 32 bits are declared by
+ * convention as uint32_t variables in unions. If *_offset and *_mask
+ * are defined for a variable, then use get_ put_ macros to
+ * conveniently access the register fields for endian conversions.
+ */
+
+struct nx_dde_t {
+ /* Data Descriptor Element, Section 6.4 */
+ union {
+ uint32_t dde_count;
+ /* When dde_count == 0 ddead is a pointer to a data buffer;
+ * ddebc is the buffer length bytes.
+ * When dde_count > 0 dde is an indirect dde; ddead is a
+ * pointer to a contiguous list of direct ddes; ddebc is the
+ * total length of all data pointed to by the list of direct
+ * ddes. Note that only one level of indirection is permitted.
+ * See Section 6.4 of the user manual for additional details.
+ */
+ };
+ uint32_t ddebc; /* dde byte count */
+ uint64_t ddead; /* dde address */
+} __aligned(16);
+
+struct nx_csb_t {
+ /* Coprocessor Status Block, Section 6.6 */
+ union {
+ uint32_t csb_v;
+ /* Valid bit. v must be set to 0 by the program
+ * before submitting the coprocessor command.
+ * Software can poll for the v bit
+ */
+
+ uint32_t csb_f;
+ /* 16B CSB size. Written to 0 by DMA when it writes the CPB */
+
+ uint32_t csb_cs;
+ /* cs completion sequence; unused */
+
+ uint32_t csb_cc;
+ /* cc completion code; cc != 0 exception occurred */
+
+ uint32_t csb_ce;
+ /* ce completion extension */
+
+ };
+ uint32_t tpbc;
+ /* target processed byte count TPBC */
+
+ uint64_t fsaddr;
+ /* Section 6.12.1 CSB NonZero error summary. FSA Failing storage
+ * address. Address where error occurred. When available, written
+ * to A field of CSB
+ */
+} __aligned(16);
+
+struct nx_ccb_t {
+ /* Coprocessor Completion Block, Section 6.7 */
+
+ uint32_t reserved[3];
+ union {
+ /* When crb.c==0 (no ccb defined) it is reserved;
+ * When crb.c==1 (ccb defined) it is cm
+ */
+
+ uint32_t ccb_cm;
+ /* Signal interrupt of crb.c==1 and cm==1 */
+
+ uint32_t word;
+ /* generic access to the 32bit word */
+ };
+} __aligned(16);
+
+struct vas_stamped_crb_t {
+ /*
+ * CRB operand of the paste coprocessor instruction is stamped
+ * in quadword 4 with the information shown here as its written
+ * in to the receive FIFO of the coprocessor
+ */
+
+ union {
+ uint32_t vas_buf_num;
+ /* Verification only vas buffer number which correlates to
+ * the low order bits of the atag in the paste command
+ */
+
+ uint32_t send_wc_id;
+ /* Pointer to Send Window Context that provides for NX address
+ * translation information, such as MSR and LPCR bits, job
+ * completion interrupt RA, PSWID, and job utilization counter.
+ */
+
+ };
+ union {
+ uint32_t recv_wc_id;
+ /* Pointer to Receive Window Context. NX uses this to return
+ * credits to a Receive FIFO as entries are dequeued.
+ */
+
+ };
+ uint32_t reserved2;
+ union {
+ uint32_t vas_invalid;
+ /* Invalid bit. If this bit is 1 the CRB is discarded by
+ * NX upon fetching from the receive FIFO. If this bit is 0
+ * the CRB is processed normally. The bit is stamped to 0
+ * by VAS and may be written to 1 by hypervisor while
+ * the CRB is in the receive FIFO (in memory).
+ */
+
+ };
+};
+
+struct nx_stamped_fault_crb_t {
+ /*
+ * A CRB that has a translation fault is stamped by NX in quadword 4
+ * and pasted to the Fault Send Window in VAS.
+ */
+ uint64_t fsa;
+ union {
+ uint32_t nxsf_t;
+ uint32_t nxsf_fs;
+ };
+ uint32_t pswid;
+};
+
+union stamped_crb_t {
+ struct vas_stamped_crb_t vas;
+ struct nx_stamped_fault_crb_t nx;
+};
+
+struct nx_gzip_cpb_t {
+ /*
+ * Coprocessor Parameter Block In/Out are used to pass metadata
+ * to/from accelerator. Tables 6.5 and 6.6 of the user manual.
+ */
+
+ /* CPBInput */
+
+ struct {
+ union {
+ union nx_qw_t qw0;
+ struct {
+ uint32_t in_adler; /* bits 0:31 */
+ uint32_t in_crc; /* bits 32:63 */
+ union {
+ uint32_t in_histlen; /* bits 64:75 */
+ uint32_t in_subc; /* bits 93:95 */
+ };
+ union {
+ /* bits 108:111 */
+ uint32_t in_sfbt;
+ /* bits 112:127 */
+ uint32_t in_rembytecnt;
+ /* bits 116:127 */
+ uint32_t in_dhtlen;
+ };
+ };
+ };
+ union {
+ union nx_qw_t in_dht[DHTSZ]; /* qw[1:18] */
+ char in_dht_char[DHT_MAXSZ]; /* byte access */
+ };
+ union nx_qw_t reserved[5]; /* qw[19:23] */
+ };
+
+ /* CPBOutput */
+
+ struct {
+ union {
+ union nx_qw_t qw24;
+ struct {
+ uint32_t out_adler; /* bits 0:31 qw[24] */
+ uint32_t out_crc; /* bits 32:63 qw[24] */
+ union {
+ /* bits 77:79 qw[24] */
+ uint32_t out_tebc;
+ /* bits 80:95 qw[24] */
+ uint32_t out_subc;
+ };
+ union {
+ /* bits 108:111 qw[24] */
+ uint32_t out_sfbt;
+ /* bits 112:127 qw[24] */
+ uint32_t out_rembytecnt;
+ /* bits 116:127 qw[24] */
+ uint32_t out_dhtlen;
+ };
+ };
+ };
+ union {
+ union nx_qw_t qw25[79]; /* qw[25:103] */
+ /* qw[25] compress no lzcounts or wrap */
+ uint32_t out_spbc_comp_wrap;
+ uint32_t out_spbc_wrap; /* qw[25] wrap */
+ /* qw[25] compress no lzcounts */
+ uint32_t out_spbc_comp;
+ /* 286 LL and 30 D symbol counts */
+ uint32_t out_lzcount[LLSZ+DSZ];
+ struct {
+ union nx_qw_t out_dht[DHTSZ]; /* qw[25:42] */
+ /* qw[43] decompress */
+ uint32_t out_spbc_decomp;
+ };
+ };
+ /* qw[104] compress with lzcounts */
+ uint32_t out_spbc_comp_with_count;
+ };
+} __aligned(128);
+
+struct nx_gzip_crb_t {
+ union { /* byte[0:3] */
+ uint32_t gzip_fc; /* bits[24-31] */
+ };
+ uint32_t reserved1; /* byte[4:7] */
+ union {
+ uint64_t csb_address; /* byte[8:15] */
+ struct {
+ uint32_t reserved2;
+ union {
+ uint32_t crb_c;
+ /* c==0 no ccb defined */
+
+ uint32_t crb_at;
+ /* at==0 address type is ignored;
+ * all addrs effective assumed.
+ */
+
+ };
+ };
+ };
+ struct nx_dde_t source_dde; /* byte[16:31] */
+ struct nx_dde_t target_dde; /* byte[32:47] */
+ struct nx_ccb_t ccb; /* byte[48:63] */
+ union {
+ /* byte[64:239] shift csb by 128 bytes out of the crb; csb was
+ * in crb earlier; JReilly says csb written with partial inject
+ */
+ union nx_qw_t reserved64[11];
+ union stamped_crb_t stamp; /* byte[64:79] */
+ };
+ struct nx_csb_t csb;
+} __aligned(128);
+
+struct nx_gzip_crb_cpb_t {
+ struct nx_gzip_crb_t crb;
+ struct nx_gzip_cpb_t cpb;
+} __aligned(2048);
+
+
+/*
+ * NX hardware convention has the msb bit on the left numbered 0.
+ * The defines below has *_offset defined as the right most bit
+ * position of a field. x of size_mask(x) is the field width in bits.
+ */
+
+#define size_mask(x) ((1U<<(x))-1)
+
+/*
+ * Offsets and Widths within the containing 32 bits of the various NX
+ * gzip hardware registers. Use the getnn/putnn macros to access
+ * these regs
+ */
+
+#define dde_count_mask size_mask(8)
+#define dde_count_offset 23
+
+/* CSB */
+
+#define csb_v_mask size_mask(1)
+#define csb_v_offset 0
+#define csb_f_mask size_mask(1)
+#define csb_f_offset 6
+#define csb_cs_mask size_mask(8)
+#define csb_cs_offset 15
+#define csb_cc_mask size_mask(8)
+#define csb_cc_offset 23
+#define csb_ce_mask size_mask(8)
+#define csb_ce_offset 31
+
+/* CCB */
+
+#define ccb_cm_mask size_mask(3)
+#define ccb_cm_offset 31
+
+/* VAS stamped CRB fields */
+
+#define vas_buf_num_mask size_mask(6)
+#define vas_buf_num_offset 5
+#define send_wc_id_mask size_mask(16)
+#define send_wc_id_offset 31
+#define recv_wc_id_mask size_mask(16)
+#define recv_wc_id_offset 31
+#define vas_invalid_mask size_mask(1)
+#define vas_invalid_offset 31
+
+/* NX stamped fault CRB fields */
+
+#define nxsf_t_mask size_mask(1)
+#define nxsf_t_offset 23
+#define nxsf_fs_mask size_mask(8)
+#define nxsf_fs_offset 31
+
+/* CPB input */
+
+#define in_histlen_mask size_mask(12)
+#define in_histlen_offset 11
+#define in_dhtlen_mask size_mask(12)
+#define in_dhtlen_offset 31
+#define in_subc_mask size_mask(3)
+#define in_subc_offset 31
+#define in_sfbt_mask size_mask(4)
+#define in_sfbt_offset 15
+#define in_rembytecnt_mask size_mask(16)
+#define in_rembytecnt_offset 31
+
+/* CPB output */
+
+#define out_tebc_mask size_mask(3)
+#define out_tebc_offset 15
+#define out_subc_mask size_mask(16)
+#define out_subc_offset 31
+#define out_sfbt_mask size_mask(4)
+#define out_sfbt_offset 15
+#define out_rembytecnt_mask size_mask(16)
+#define out_rembytecnt_offset 31
+#define out_dhtlen_mask size_mask(12)
+#define out_dhtlen_offset 31
+
+/* CRB */
+
+#define gzip_fc_mask size_mask(8)
+#define gzip_fc_offset 31
+#define crb_c_mask size_mask(1)
+#define crb_c_offset 28
+#define crb_at_mask size_mask(1)
+#define crb_at_offset 30
+#define csb_address_mask ~(15UL) /* mask off bottom 4b */
+
+/*
+ * Access macros for the registers. Do not access registers directly
+ * because of the endian conversion. P9 processor may run either as
+ * Little or Big endian. However the NX coprocessor regs are always
+ * big endian.
+ * Use the 32 and 64b macros to access respective
+ * register sizes.
+ * Use nn forms for the register fields shorter than 32 bits.
+ */
+
+#define getnn(ST, REG) ((be32toh(ST.REG) >> (31-REG##_offset)) \
+ & REG##_mask)
+#define getpnn(ST, REG) ((be32toh((ST)->REG) >> (31-REG##_offset)) \
+ & REG##_mask)
+#define get32(ST, REG) (be32toh(ST.REG))
+#define getp32(ST, REG) (be32toh((ST)->REG))
+#define get64(ST, REG) (be64toh(ST.REG))
+#define getp64(ST, REG) (be64toh((ST)->REG))
+
+#define unget32(ST, REG) (get32(ST, REG) & ~((REG##_mask) \
+ << (31-REG##_offset)))
+/* get 32bits less the REG field */
+
+#define ungetp32(ST, REG) (getp32(ST, REG) & ~((REG##_mask) \
+ << (31-REG##_offset)))
+/* get 32bits less the REG field */
+
+#define clear_regs(ST) memset((void *)(&(ST)), 0, sizeof(ST))
+#define clear_dde(ST) do { ST.dde_count = ST.ddebc = 0; ST.ddead = 0; \
+ } while (0)
+#define clearp_dde(ST) do { (ST)->dde_count = (ST)->ddebc = 0; \
+ (ST)->ddead = 0; \
+ } while (0)
+#define clear_struct(ST) memset((void *)(&(ST)), 0, sizeof(ST))
+#define putnn(ST, REG, X) (ST.REG = htobe32(unget32(ST, REG) | (((X) \
+ & REG##_mask) << (31-REG##_offset))))
+#define putpnn(ST, REG, X) ((ST)->REG = htobe32(ungetp32(ST, REG) \
+ | (((X) & REG##_mask) << (31-REG##_offset))))
+
+#define put32(ST, REG, X) (ST.REG = htobe32(X))
+#define putp32(ST, REG, X) ((ST)->REG = htobe32(X))
+#define put64(ST, REG, X) (ST.REG = htobe64(X))
+#define putp64(ST, REG, X) ((ST)->REG = htobe64(X))
+
+/*
+ * Completion extension ce(0) ce(1) ce(2). Bits ce(3-7)
+ * unused. Section 6.6 Figure 6.7.
+ */
+
+#define get_csb_ce(ST) ((uint32_t)getnn(ST, csb_ce))
+#define get_csb_ce_ms3b(ST) (get_csb_ce(ST) >> 5)
+#define put_csb_ce_ms3b(ST, X) putnn(ST, csb_ce, ((uint32_t)(X) << 5))
+
+#define CSB_CE_PARTIAL 0x4
+#define CSB_CE_TERMINATE 0x2
+#define CSB_CE_TPBC_VALID 0x1
+
+#define csb_ce_termination(X) (!!((X) & CSB_CE_TERMINATE))
+/* termination, output buffers may be modified, SPBC/TPBC invalid Fig.6-7 */
+
+#define csb_ce_check_completion(X) (!csb_ce_termination(X))
+/* if not terminated then check full or partial completion */
+
+#define csb_ce_partial_completion(X) (!!((X) & CSB_CE_PARTIAL))
+#define csb_ce_full_completion(X) (!csb_ce_partial_completion(X))
+#define csb_ce_tpbc_valid(X) (!!((X) & CSB_CE_TPBC_VALID))
+/* TPBC indicates successfully stored data count */
+
+#define csb_ce_default_err(X) csb_ce_termination(X)
+/* most error CEs have CE(0)=0 and CE(1)=1 */
+
+#define csb_ce_cc3_partial(X) csb_ce_partial_completion(X)
+/* some CC=3 are partially completed, Table 6-8 */
+
+#define csb_ce_cc64(X) ((X)&(CSB_CE_PARTIAL \
+ | CSB_CE_TERMINATE) == 0)
+/* Compression: when TPBC>SPBC then CC=64 Table 6-8; target didn't
+ * compress smaller than source.
+ */
+
+/* Decompress SFBT combinations Tables 5-3, 6-4, 6-6 */
+
+#define SFBT_BFINAL 0x1
+#define SFBT_LIT 0x4
+#define SFBT_FHT 0x5
+#define SFBT_DHT 0x6
+#define SFBT_HDR 0x7
+
+/*
+ * NX gzip function codes. Table 6.2.
+ * Bits 0:4 are the FC. Bit 5 is used by the DMA controller to
+ * select one of the two Byte Count Limits.
+ */
+
+#define GZIP_FC_LIMIT_MASK 0x01
+#define GZIP_FC_COMPRESS_FHT 0x00
+#define GZIP_FC_COMPRESS_DHT 0x02
+#define GZIP_FC_COMPRESS_FHT_COUNT 0x04
+#define GZIP_FC_COMPRESS_DHT_COUNT 0x06
+#define GZIP_FC_COMPRESS_RESUME_FHT 0x08
+#define GZIP_FC_COMPRESS_RESUME_DHT 0x0a
+#define GZIP_FC_COMPRESS_RESUME_FHT_COUNT 0x0c
+#define GZIP_FC_COMPRESS_RESUME_DHT_COUNT 0x0e
+#define GZIP_FC_DECOMPRESS 0x10
+#define GZIP_FC_DECOMPRESS_SINGLE_BLK_N_SUSPEND 0x12
+#define GZIP_FC_DECOMPRESS_RESUME 0x14
+#define GZIP_FC_DECOMPRESS_RESUME_SINGLE_BLK_N_SUSPEND 0x16
+#define GZIP_FC_WRAP 0x1e
+
+#define fc_is_compress(fc) (((fc) & 0x10) == 0)
+#define fc_has_count(fc) (fc_is_compress(fc) && (((fc) & 0x4) != 0))
+
+/* CSB.CC Error codes */
+
+#define ERR_NX_OK 0
+#define ERR_NX_ALIGNMENT 1
+#define ERR_NX_OPOVERLAP 2
+#define ERR_NX_DATA_LENGTH 3
+#define ERR_NX_TRANSLATION 5
+#define ERR_NX_PROTECTION 6
+#define ERR_NX_EXTERNAL_UE7 7
+#define ERR_NX_INVALID_OP 8
+#define ERR_NX_PRIVILEGE 9
+#define ERR_NX_INTERNAL_UE 10
+#define ERR_NX_EXTERN_UE_WR 12
+#define ERR_NX_TARGET_SPACE 13
+#define ERR_NX_EXCESSIVE_DDE 14
+#define ERR_NX_TRANSL_WR 15
+#define ERR_NX_PROTECT_WR 16
+#define ERR_NX_SUBFUNCTION 17
+#define ERR_NX_FUNC_ABORT 18
+#define ERR_NX_BYTE_MAX 19
+#define ERR_NX_CORRUPT_CRB 20
+#define ERR_NX_INVALID_CRB 21
+#define ERR_NX_INVALID_DDE 30
+#define ERR_NX_SEGMENTED_DDL 31
+#define ERR_NX_DDE_OVERFLOW 33
+#define ERR_NX_TPBC_GT_SPBC 64
+#define ERR_NX_MISSING_CODE 66
+#define ERR_NX_INVALID_DIST 67
+#define ERR_NX_INVALID_DHT 68
+#define ERR_NX_EXTERNAL_UE90 90
+#define ERR_NX_WDOG_TIMER 224
+#define ERR_NX_AT_FAULT 250
+#define ERR_NX_INTR_SERVER 252
+#define ERR_NX_UE253 253
+#define ERR_NX_NO_HW 254
+#define ERR_NX_HUNG_OP 255
+#define ERR_NX_END 256
+
+/* initial values for non-resume operations */
+#define INIT_CRC 0 /* crc32(0L, Z_NULL, 0) */
+#define INIT_ADLER 1 /* adler32(0L, Z_NULL, 0) adler is initialized to 1 */
+
+/* prototypes */
+#ifdef NX_JOB_CALLBACK
+int nxu_run_job(struct nx_gzip_crb_cpb_t *c, void *handle,
+ int (*callback)(const void *));
+#else
+int nxu_run_job(struct nx_gzip_crb_cpb_t *c, void *handle);
+#endif
+
+
+/* caller supplies a print buffer 4*sizeof(crb) */
+
+char *nx_crb_str(struct nx_gzip_crb_t *crb, char *prbuf);
+char *nx_cpb_str(struct nx_gzip_cpb_t *cpb, char *prbuf);
+char *nx_prt_hex(void *cp, int sz, char *prbuf);
+char *nx_lzcount_str(struct nx_gzip_cpb_t *cpb, char *prbuf);
+char *nx_strerror(int e);
+
+#ifdef NX_SIM
+#include <stdio.h>
+int nx_sim_init(void *ctx);
+int nx_sim_end(void *ctx);
+int nxu_run_sim_job(struct nx_gzip_crb_cpb_t *c, void *ctx);
+#endif /* NX_SIM */
+
+/* Deflate stream manipulation */
+
+#define set_final_bit(x) (x |= (unsigned char)1)
+#define clr_final_bit(x) (x &= ~(unsigned char)1)
+
+#define append_empty_fh_blk(p, b) do { *(p) = (2 | (1&(b))); *((p)+1) = 0; \
+ } while (0)
+/* append 10 bits 0000001b 00...... ;
+ * assumes appending starts on a byte boundary; b is the final bit.
+ */
+
+
+#ifdef NX_842
+
+/* 842 Engine */
+
+struct nx_eft_crb_t {
+ union { /* byte[0:3] */
+ uint32_t eft_fc; /* bits[29-31] */
+ };
+ uint32_t reserved1; /* byte[4:7] */
+ union {
+ uint64_t csb_address; /* byte[8:15] */
+ struct {
+ uint32_t reserved2;
+ union {
+ uint32_t crb_c;
+ /* c==0 no ccb defined */
+
+ uint32_t crb_at;
+ /* at==0 address type is ignored;
+ * all addrs effective assumed.
+ */
+
+ };
+ };
+ };
+ struct nx_dde_t source_dde; /* byte[16:31] */
+ struct nx_dde_t target_dde; /* byte[32:47] */
+ struct nx_ccb_t ccb; /* byte[48:63] */
+ union {
+ union nx_qw_t reserved64[3]; /* byte[64:96] */
+ };
+ struct nx_csb_t csb;
+} __aligned(128);
+
+/* 842 CRB */
+
+#define EFT_FC_MASK size_mask(3)
+#define EFT_FC_OFFSET 31
+#define EFT_FC_COMPRESS 0x0
+#define EFT_FC_COMPRESS_WITH_CRC 0x1
+#define EFT_FC_DECOMPRESS 0x2
+#define EFT_FC_DECOMPRESS_WITH_CRC 0x3
+#define EFT_FC_BLK_DATA_MOVE 0x4
+#endif /* NX_842 */
+
+#endif /* _NXU_H */
--
2.21.0
