diff options
Diffstat (limited to 'drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c new file mode 100644 index 000000000000..b37d8f7825dd --- /dev/null +++ b/drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c @@ -0,0 +1,79 @@ +/* + * Copyright (C) 2017 Chelsio Communications. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * The full GNU General Public License is included in this distribution in + * the file called "COPYING". + * + */ + +#include "cxgb4.h" +#include "cudbg_if.h" +#include "cudbg_lib_common.h" +#include "cudbg_lib.h" + +static void cudbg_write_and_release_buff(struct cudbg_buffer *pin_buff, + struct cudbg_buffer *dbg_buff) +{ + cudbg_update_buff(pin_buff, dbg_buff); + cudbg_put_buff(pin_buff, dbg_buff); +} + +/* This function will add additional padding bytes into debug_buffer to make it + * 4 byte aligned. + */ +void cudbg_align_debug_buffer(struct cudbg_buffer *dbg_buff, + struct cudbg_entity_hdr *entity_hdr) +{ + u8 zero_buf[4] = {0}; + u8 padding, remain; + + remain = (dbg_buff->offset - entity_hdr->start_offset) % 4; + padding = 4 - remain; + if (remain) { + memcpy(((u8 *)dbg_buff->data) + dbg_buff->offset, &zero_buf, + padding); + dbg_buff->offset += padding; + entity_hdr->num_pad = padding; + } + entity_hdr->size = dbg_buff->offset - entity_hdr->start_offset; +} + +struct cudbg_entity_hdr *cudbg_get_entity_hdr(void *outbuf, int i) +{ + struct cudbg_hdr *cudbg_hdr = (struct cudbg_hdr *)outbuf; + + return (struct cudbg_entity_hdr *) + ((char *)outbuf + cudbg_hdr->hdr_len + + (sizeof(struct cudbg_entity_hdr) * (i - 1))); +} + +int cudbg_collect_reg_dump(struct cudbg_init *pdbg_init, + struct cudbg_buffer *dbg_buff, + struct cudbg_error *cudbg_err) +{ + struct adapter *padap = pdbg_init->adap; + struct cudbg_buffer temp_buff = { 0 }; + u32 buf_size = 0; + int rc = 0; + + if (is_t4(padap->params.chip)) + buf_size = T4_REGMAP_SIZE; + else if (is_t5(padap->params.chip) || is_t6(padap->params.chip)) + buf_size = T5_REGMAP_SIZE; + + rc = cudbg_get_buff(dbg_buff, buf_size, &temp_buff); + if (rc) + return rc; + t4_get_regs(padap, (void *)temp_buff.data, temp_buff.size); + cudbg_write_and_release_buff(&temp_buff, dbg_buff); + return rc; +} |