cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

cna_fwimg.c (2011B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Linux network driver for QLogic BR-series Converged Network Adapter.
      4 */
      5/*
      6 * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
      7 * Copyright (c) 2014-2015 QLogic Corporation
      8 * All rights reserved
      9 * www.qlogic.com
     10 */
     11#include <linux/firmware.h>
     12#include "bnad.h"
     13#include "bfi.h"
     14#include "cna.h"
     15
     16const struct firmware *bfi_fw;
     17static u32 *bfi_image_ct_cna, *bfi_image_ct2_cna;
     18static u32 bfi_image_ct_cna_size, bfi_image_ct2_cna_size;
     19
     20static u32 *
     21cna_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
     22			u32 *bfi_image_size, char *fw_name)
     23{
     24	const struct firmware *fw;
     25	u32 n;
     26
     27	if (request_firmware(&fw, fw_name, &pdev->dev)) {
     28		dev_alert(&pdev->dev, "can't load firmware %s\n", fw_name);
     29		goto error;
     30	}
     31
     32	*bfi_image = (u32 *)fw->data;
     33	*bfi_image_size = fw->size/sizeof(u32);
     34	bfi_fw = fw;
     35
     36	/* Convert loaded firmware to host order as it is stored in file
     37	 * as sequence of LE32 integers.
     38	 */
     39	for (n = 0; n < *bfi_image_size; n++)
     40		le32_to_cpus(*bfi_image + n);
     41
     42	return *bfi_image;
     43error:
     44	return NULL;
     45}
     46
     47u32 *
     48cna_get_firmware_buf(struct pci_dev *pdev)
     49{
     50	if (pdev->device == BFA_PCI_DEVICE_ID_CT2) {
     51		if (bfi_image_ct2_cna_size == 0)
     52			cna_read_firmware(pdev, &bfi_image_ct2_cna,
     53				&bfi_image_ct2_cna_size, CNA_FW_FILE_CT2);
     54		return bfi_image_ct2_cna;
     55	} else if (bfa_asic_id_ct(pdev->device)) {
     56		if (bfi_image_ct_cna_size == 0)
     57			cna_read_firmware(pdev, &bfi_image_ct_cna,
     58				&bfi_image_ct_cna_size, CNA_FW_FILE_CT);
     59		return bfi_image_ct_cna;
     60	}
     61
     62	return NULL;
     63}
     64
     65u32 *
     66bfa_cb_image_get_chunk(enum bfi_asic_gen asic_gen, u32 off)
     67{
     68	switch (asic_gen) {
     69	case BFI_ASIC_GEN_CT:
     70		return (bfi_image_ct_cna + off);
     71	case BFI_ASIC_GEN_CT2:
     72		return (bfi_image_ct2_cna + off);
     73	default:
     74		return NULL;
     75	}
     76}
     77
     78u32
     79bfa_cb_image_get_size(enum bfi_asic_gen asic_gen)
     80{
     81	switch (asic_gen) {
     82	case BFI_ASIC_GEN_CT:
     83		return bfi_image_ct_cna_size;
     84	case BFI_ASIC_GEN_CT2:
     85		return bfi_image_ct2_cna_size;
     86	default:
     87		return 0;
     88	}
     89}