New upstream version 18.05

[deb_dpdk.git] / drivers / net / nfp / nfpcore / nfp_mip.c

diff --git a/drivers/net/nfp/nfpcore/nfp_mip.c b/drivers/net/nfp/nfpcore/nfp_mip.c
new file mode 100644 (file)
index 0000000..c86966d
--- /dev/null
+++ b/drivers/net/nfp/nfpcore/nfp_mip.c
@@ -0,0 +1,154 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Netronome Systems, Inc.
+ * All rights reserved.
+ */
+
+#include <stdio.h>
+#include <rte_byteorder.h>
+
+#include "nfp_cpp.h"
+#include "nfp_mip.h"
+#include "nfp_nffw.h"
+
+#define NFP_MIP_SIGNATURE      rte_cpu_to_le_32(0x0050494d)  /* "MIP\0" */
+#define NFP_MIP_VERSION                rte_cpu_to_le_32(1)
+#define NFP_MIP_MAX_OFFSET     (256 * 1024)
+
+struct nfp_mip {
+       uint32_t signature;
+       uint32_t mip_version;
+       uint32_t mip_size;
+       uint32_t first_entry;
+
+       uint32_t version;
+       uint32_t buildnum;
+       uint32_t buildtime;
+       uint32_t loadtime;
+
+       uint32_t symtab_addr;
+       uint32_t symtab_size;
+       uint32_t strtab_addr;
+       uint32_t strtab_size;
+
+       char name[16];
+       char toolchain[32];
+};
+
+/* Read memory and check if it could be a valid MIP */
+static int
+nfp_mip_try_read(struct nfp_cpp *cpp, uint32_t cpp_id, uint64_t addr,
+                struct nfp_mip *mip)
+{
+       int ret;
+
+       ret = nfp_cpp_read(cpp, cpp_id, addr, mip, sizeof(*mip));
+       if (ret != sizeof(*mip)) {
+               printf("Failed to read MIP data (%d, %zu)\n",
+                       ret, sizeof(*mip));
+               return -EIO;
+       }
+       if (mip->signature != NFP_MIP_SIGNATURE) {
+               printf("Incorrect MIP signature (0x%08x)\n",
+                        rte_le_to_cpu_32(mip->signature));
+               return -EINVAL;
+       }
+       if (mip->mip_version != NFP_MIP_VERSION) {
+               printf("Unsupported MIP version (%d)\n",
+                        rte_le_to_cpu_32(mip->mip_version));
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+/* Try to locate MIP using the resource table */
+static int
+nfp_mip_read_resource(struct nfp_cpp *cpp, struct nfp_mip *mip)
+{
+       struct nfp_nffw_info *nffw_info;
+       uint32_t cpp_id;
+       uint64_t addr;
+       int err;
+
+       nffw_info = nfp_nffw_info_open(cpp);
+       if (!nffw_info)
+               return -ENODEV;
+
+       err = nfp_nffw_info_mip_first(nffw_info, &cpp_id, &addr);
+       if (err)
+               goto exit_close_nffw;
+
+       err = nfp_mip_try_read(cpp, cpp_id, addr, mip);
+exit_close_nffw:
+       nfp_nffw_info_close(nffw_info);
+       return err;
+}
+
+/*
+ * nfp_mip_open() - Get device MIP structure
+ * @cpp:       NFP CPP Handle
+ *
+ * Copy MIP structure from NFP device and return it.  The returned
+ * structure is handled internally by the library and should be
+ * freed by calling nfp_mip_close().
+ *
+ * Return: pointer to mip, NULL on failure.
+ */
+struct nfp_mip *
+nfp_mip_open(struct nfp_cpp *cpp)
+{
+       struct nfp_mip *mip;
+       int err;
+
+       mip = malloc(sizeof(*mip));
+       if (!mip)
+               return NULL;
+
+       err = nfp_mip_read_resource(cpp, mip);
+       if (err) {
+               free(mip);
+               return NULL;
+       }
+
+       mip->name[sizeof(mip->name) - 1] = 0;
+
+       return mip;
+}
+
+void
+nfp_mip_close(struct nfp_mip *mip)
+{
+       free(mip);
+}
+
+const char *
+nfp_mip_name(const struct nfp_mip *mip)
+{
+       return mip->name;
+}
+
+/*
+ * nfp_mip_symtab() - Get the address and size of the MIP symbol table
+ * @mip:       MIP handle
+ * @addr:      Location for NFP DDR address of MIP symbol table
+ * @size:      Location for size of MIP symbol table
+ */
+void
+nfp_mip_symtab(const struct nfp_mip *mip, uint32_t *addr, uint32_t *size)
+{
+       *addr = rte_le_to_cpu_32(mip->symtab_addr);
+       *size = rte_le_to_cpu_32(mip->symtab_size);
+}
+
+/*
+ * nfp_mip_strtab() - Get the address and size of the MIP symbol name table
+ * @mip:       MIP handle
+ * @addr:      Location for NFP DDR address of MIP symbol name table
+ * @size:      Location for size of MIP symbol name table
+ */
+void
+nfp_mip_strtab(const struct nfp_mip *mip, uint32_t *addr, uint32_t *size)
+{
+       *addr = rte_le_to_cpu_32(mip->strtab_addr);
+       *size = rte_le_to_cpu_32(mip->strtab_size);
+}