selftests/powerpc: Add header files for GZIP engine test

Add files to access the powerpc NX-GZIP engine in user space.

Signed-off-by: Bulent Abali <abali@us.ibm.com>
Signed-off-by: Raphael Moreira Zinsly <rzinsly@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200420205538.25181-2-rzinsly@linux.ibm.com

diff --git a/tools/testing/selftests/powerpc/nx-gzip/include/crb.h b/tools/testing/selftests/powerpc/nx-gzip/include/crb.h
new file mode 100644 (file)
index 0000000..ab10108
--- /dev/null
+++ b/tools/testing/selftests/powerpc/nx-gzip/include/crb.h
@@ -0,0 +1,155 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef __CRB_H
+#define __CRB_H
+#include <linux/types.h>
+#include "nx.h"
+
+/* CCW 842 CI/FC masks
+ * NX P8 workbook, section 4.3.1, figure 4-6
+ * "CI/FC Boundary by NX CT type"
+ */
+#define CCW_CI_842              (0x00003ff8)
+#define CCW_FC_842              (0x00000007)
+
+/* Chapter 6.5.8 Coprocessor-Completion Block (CCB) */
+
+#define CCB_VALUE              (0x3fffffffffffffff)
+#define CCB_ADDRESS            (0xfffffffffffffff8)
+#define CCB_CM                 (0x0000000000000007)
+#define CCB_CM0                        (0x0000000000000004)
+#define CCB_CM12               (0x0000000000000003)
+
+#define CCB_CM0_ALL_COMPLETIONS        (0x0)
+#define CCB_CM0_LAST_IN_CHAIN  (0x4)
+#define CCB_CM12_STORE         (0x0)
+#define CCB_CM12_INTERRUPT     (0x1)
+
+#define CCB_SIZE               (0x10)
+#define CCB_ALIGN              CCB_SIZE
+
+struct coprocessor_completion_block {
+       __be64 value;
+       __be64 address;
+} __aligned(CCB_ALIGN);
+
+
+/* Chapter 6.5.7 Coprocessor-Status Block (CSB) */
+
+#define CSB_V                  (0x80)
+#define CSB_F                  (0x04)
+#define CSB_CH                 (0x03)
+#define CSB_CE_INCOMPLETE      (0x80)
+#define CSB_CE_TERMINATION     (0x40)
+#define CSB_CE_TPBC            (0x20)
+
+#define CSB_CC_SUCCESS         (0)
+#define CSB_CC_INVALID_ALIGN   (1)
+#define CSB_CC_OPERAND_OVERLAP (2)
+#define CSB_CC_DATA_LENGTH     (3)
+#define CSB_CC_TRANSLATION     (5)
+#define CSB_CC_PROTECTION      (6)
+#define CSB_CC_RD_EXTERNAL     (7)
+#define CSB_CC_INVALID_OPERAND (8)
+#define CSB_CC_PRIVILEGE       (9)
+#define CSB_CC_INTERNAL                (10)
+#define CSB_CC_WR_EXTERNAL     (12)
+#define CSB_CC_NOSPC           (13)
+#define CSB_CC_EXCESSIVE_DDE   (14)
+#define CSB_CC_WR_TRANSLATION  (15)
+#define CSB_CC_WR_PROTECTION   (16)
+#define CSB_CC_UNKNOWN_CODE    (17)
+#define CSB_CC_ABORT           (18)
+#define CSB_CC_TRANSPORT       (20)
+#define CSB_CC_SEGMENTED_DDL   (31)
+#define CSB_CC_PROGRESS_POINT  (32)
+#define CSB_CC_DDE_OVERFLOW    (33)
+#define CSB_CC_SESSION         (34)
+#define CSB_CC_PROVISION       (36)
+#define CSB_CC_CHAIN           (37)
+#define CSB_CC_SEQUENCE                (38)
+#define CSB_CC_HW              (39)
+
+#define CSB_SIZE               (0x10)
+#define CSB_ALIGN              CSB_SIZE
+
+struct coprocessor_status_block {
+       __u8 flags;
+       __u8 cs;
+       __u8 cc;
+       __u8 ce;
+       __be32 count;
+       __be64 address;
+} __aligned(CSB_ALIGN);
+
+
+/* Chapter 6.5.10 Data-Descriptor List (DDL)
+ * each list contains one or more Data-Descriptor Entries (DDE)
+ */
+
+#define DDE_P                  (0x8000)
+
+#define DDE_SIZE               (0x10)
+#define DDE_ALIGN              DDE_SIZE
+
+struct data_descriptor_entry {
+       __be16 flags;
+       __u8 count;
+       __u8 index;
+       __be32 length;
+       __be64 address;
+} __aligned(DDE_ALIGN);
+
+
+/* Chapter 6.5.2 Coprocessor-Request Block (CRB) */
+
+#define CRB_SIZE               (0x80)
+#define CRB_ALIGN              (0x100) /* Errata: requires 256 alignment */
+
+
+/* Coprocessor Status Block field
+ *   ADDRESS   address of CSB
+ *   C         CCB is valid
+ *   AT                0 = addrs are virtual, 1 = addrs are phys
+ *   M         enable perf monitor
+ */
+#define CRB_CSB_ADDRESS                (0xfffffffffffffff0)
+#define CRB_CSB_C              (0x0000000000000008)
+#define CRB_CSB_AT             (0x0000000000000002)
+#define CRB_CSB_M              (0x0000000000000001)
+
+struct coprocessor_request_block {
+       __be32 ccw;
+       __be32 flags;
+       __be64 csb_addr;
+
+       struct data_descriptor_entry source;
+       struct data_descriptor_entry target;
+
+       struct coprocessor_completion_block ccb;
+
+       __u8 reserved[48];
+
+       struct coprocessor_status_block csb;
+} __aligned(CRB_ALIGN);
+
+#define crb_csb_addr(c)         __be64_to_cpu(c->csb_addr)
+#define crb_nx_fault_addr(c)    __be64_to_cpu(c->stamp.nx.fault_storage_addr)
+#define crb_nx_flags(c)         c->stamp.nx.flags
+#define crb_nx_fault_status(c)  c->stamp.nx.fault_status
+#define crb_nx_pswid(c)                c->stamp.nx.pswid
+
+
+/* RFC02167 Initiate Coprocessor Instructions document
+ * Chapter 8.2.1.1.1 RS
+ * Chapter 8.2.3 Coprocessor Directive
+ * Chapter 8.2.4 Execution
+ *
+ * The CCW must be converted to BE before passing to icswx()
+ */
+
+#define CCW_PS                  (0xff000000)
+#define CCW_CT                  (0x00ff0000)
+#define CCW_CD                  (0x0000ffff)
+#define CCW_CL                  (0x0000c000)
+
+#endif

diff --git a/tools/testing/selftests/powerpc/nx-gzip/include/nx.h b/tools/testing/selftests/powerpc/nx-gzip/include/nx.h
new file mode 100644 (file)
index 0000000..1abe23f
--- /dev/null
+++ b/tools/testing/selftests/powerpc/nx-gzip/include/nx.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright 2020 IBM Corp.
+ *
+ */
+#ifndef _NX_H
+#define _NX_H
+
+#include <stdbool.h>
+
+#define        NX_FUNC_COMP_842        1
+#define NX_FUNC_COMP_GZIP      2
+
+#ifndef __aligned
+#define __aligned(x)   __attribute__((aligned(x)))
+#endif
+
+struct nx842_func_args {
+       bool use_crc;
+       bool decompress;                /* true decompress; false compress */
+       bool move_data;
+       int timeout;                    /* seconds */
+};
+
+struct nxbuf_t {
+       int len;
+       char *buf;
+};
+
+/* @function should be EFT (aka 842), GZIP etc */
+void *nx_function_begin(int function, int pri);
+
+int nx_function(void *handle, struct nxbuf_t *in, struct nxbuf_t *out,
+               void *arg);
+
+int nx_function_end(void *handle);
+
+#endif /* _NX_H */

diff --git a/tools/testing/selftests/powerpc/nx-gzip/include/vas-api.h b/tools/testing/selftests/powerpc/nx-gzip/include/vas-api.h
new file mode 120000 (symlink)
index 0000000..77fb4c7
--- /dev/null
+++ b/tools/testing/selftests/powerpc/nx-gzip/include/vas-api.h
@@ -0,0 +1 @@
+../../../../../../arch/powerpc/include/uapi/asm/vas-api.h
\ No newline at end of file