path: root/drivers/net/qlcnic/qlcnic_ctx.c

/*
 * QLogic qlcnic NIC Driver
 * Copyright (c)  2009-2010 QLogic Corporation
 *
 * See LICENSE.qlcnic for copyright and licensing details.
 */

#include "qlcnic.h"

static u32
qlcnic_poll_rsp(struct qlcnic_adapter *adapter)
{
	u32 rsp;
	int timeout = 0;

	do {
		/* give atleast 1ms for firmware to respond */
		msleep(1);

		if (++timeout > QLCNIC_OS_CRB_RETRY_COUNT)
			return QLCNIC_CDRP_RSP_TIMEOUT;

		rsp = QLCRD32(adapter, QLCNIC_CDRP_CRB_OFFSET);
	} while (!QLCNIC_CDRP_IS_RSP(rsp));

	return rsp;
}

u32
qlcnic_issue_cmd(struct qlcnic_adapter *adapter,
	u32 pci_fn, u32 version, u32 arg1, u32 arg2, u32 arg3, u32 cmd)
{
	u32 rsp;
	u32 signature;
	u32 rcode = QLCNIC_RCODE_SUCCESS;
	struct pci_dev *pdev = adapter->pdev;

	signature = QLCNIC_CDRP_SIGNATURE_MAKE(pci_fn, version);

	/* Acquire semaphore before accessing CRB */
	if (qlcnic_api_lock(adapter))
		return QLCNIC_RCODE_TIMEOUT;

	QLCWR32(adapter, QLCNIC_SIGN_CRB_OFFSET, signature);
	QLCWR32(adapter, QLCNIC_ARG1_CRB_OFFSET, arg1);
	QLCWR32(adapter, QLCNIC_ARG2_CRB_OFFSET, arg2);
	QLCWR32(adapter, QLCNIC_ARG3_CRB_OFFSET, arg3);
	QLCWR32(adapter, QLCNIC_CDRP_CRB_OFFSET, QLCNIC_CDRP_FORM_CMD(cmd));

	rsp = qlcnic_poll_rsp(adapter);

	if (rsp == QLCNIC_CDRP_RSP_TIMEOUT) {
		dev_err(&pdev->dev, "card response timeout.\n");
		rcode = QLCNIC_RCODE_TIMEOUT;
	} else if (rsp == QLCNIC_CDRP_RSP_FAIL) {
		rcode = QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
		dev_err(&pdev->dev, "failed card response code:0x%x\n",
				rcode);
	}

	/* Release semaphore */
	qlcnic_api_unlock(adapter);

	return rcode;
}

static uint32_t qlcnic_temp_checksum(uint32_t *temp_buffer, u16 temp_size)
{
	uint64_t sum = 0;
	int count = temp_size / sizeof(uint32_t);
	while (count-- > 0)
		sum += *temp_buffer++;
	while (sum >> 32)
		sum = (sum & 0xFFFFFFFF) + (sum >> 32);
	return ~sum;
}

int qlcnic_fw_cmd_get_minidump_temp(struct qlcnic_adapter *adapter)
{
	int err, i;
	u16 temp_size;
	void *tmp_addr;
	u32 version, csum, *template, *tmp_buf;
	struct qlcnic_hardware_context *ahw;
	struct qlcnic_dump_template_hdr *tmpl_hdr, *tmp_tmpl;
	dma_addr_t tmp_addr_t = 0;

	ahw = adapter->ahw;
	err = qlcnic_issue_cmd(adapter,
			adapter->ahw->pci_func,
			adapter->fw_hal_version,
			0,
			0,
			0,
			QLCNIC_CDRP_CMD_TEMP_SIZE);
	if (err != QLCNIC_RCODE_SUCCESS) {
		err = QLCRD32(adapter, QLCNIC_ARG1_CRB_OFFSET);
		dev_err(&adapter->pdev->dev,
			"Failed to get template size %d\n", err);
		err = -EIO;
		return err;
	}
	version = QLCRD32(adapter, QLCNIC_ARG3_CRB_OFFSET);
	temp_size = QLCRD32(adapter, QLCNIC_ARG2_CRB_OFFSET);
	if (!temp_size)
		return -EIO;

	tmp_addr = dma_alloc_coherent(&adapter->pdev->dev, temp_size,
			&tmp_addr_t, GFP_KERNEL