int iwl_pcie_init_fw_sec(struct iwl_trans *trans,
const struct fw_img *fw,
struct iwl_context_info_dram *ctxt_dram)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
struct iwl_self_init_dram *dram = &trans_pcie->init_dram;
int i, ret, lmac_cnt, umac_cnt, paging_cnt;
if (WARN(dram->paging,
"paging shouldn't already be initialized (%d pages)\n",
dram->paging_cnt))
iwl_pcie_ctxt_info_free_paging(trans);
lmac_cnt = iwl_pcie_get_num_sections(fw, 0);
/* add 1 due to separator */
umac_cnt = iwl_pcie_get_num_sections(fw, lmac_cnt + 1);
/* add 2 due to separators */
paging_cnt = iwl_pcie_get_num_sections(fw, lmac_cnt + umac_cnt + 2);
dram->fw = kcalloc(umac_cnt + lmac_cnt, sizeof(*dram->fw), GFP_KERNEL);
if (!dram->fw)
return -ENOMEM;
dram->paging = kcalloc(paging_cnt, sizeof(*dram->paging), GFP_KERNEL);
if (!dram->paging)
return -ENOMEM;
/* initialize lmac sections */
for (i = 0; i < lmac_cnt; i++) {
ret = iwl_pcie_ctxt_info_alloc_dma(trans, &fw->sec[i],
&dram->fw[dram->fw_cnt]);
if (ret)
return ret;
ctxt_dram->lmac_img[i] =
cpu_to_le64(dram->fw[dram->fw_cnt].physical);
dram->fw_cnt++;
}
/* initialize umac sections */
for (i = 0; i < umac_cnt; i++) {
/* access FW with +1 to make up for lmac separator */
ret = iwl_pcie_ctxt_info_alloc_dma(trans,
&fw->sec[dram->fw_cnt + 1],
&dram->fw[dram->fw_cnt]);
if (ret)
return ret;
ctxt_dram->umac_img[i] =
cpu_to_le64(dram->fw[dram->fw_cnt].physical);
dram->fw_cnt++;
}
/*
* Initialize paging.
* Paging memory isn't stored in dram->fw as the umac and lmac - it is
* stored separately.
* This is since the timing of its release is different -
* while fw memory can be released on alive, the paging memory can be
* freed only when the device goes down.
* Given that, the logic here in accessing the fw image is a bit
* different - fw_cnt isn't changing so loop counter is added to it.
*/
for (i = 0; i < paging_cnt; i++) {
/* access FW with +2 to make up for lmac & umac separators */
int fw_idx = dram->fw_cnt + i + 2;
ret = iwl_pcie_ctxt_info_alloc_dma(trans, &fw->sec[fw_idx],
&dram->paging[i]);
if (ret)
return ret;
ctxt_dram->virtual_img[i] =
cpu_to_le64(dram->paging[i].physical);
dram->paging_cnt++;
}
return 0;
}
void _iwl_trans_pcie_gen2_stop_device(struct iwl_trans *trans, bool low_power)
{
struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans);
lockdep_assert_held(&trans_pcie->mutex);
if (trans_pcie->is_down)
return;
trans_pcie->is_down = true;
/* Stop dbgc before stopping device */
_iwl_fw_dbg_stop_recording(trans, NULL);
/* tell the device to stop sending interrupts */
iwl_disable_interrupts(trans);
/* device going down, Stop using ICT table */
iwl_pcie_disable_ict(trans);
/*
* If a HW restart happens during firmware loading,
* then the firmware loading might call this function
* and later it might be called again due to the
* restart. So don't process again if the device is
* already dead.
*/
if (test_and_clear_bit(STATUS_DEVICE_ENABLED, &trans->status)) {
IWL_DEBUG_INFO(trans,
"DEVICE_ENABLED bit was set and is now cleared\n");
iwl_pcie_gen2_tx_stop(trans);
iwl_pcie_rx_stop(trans);
}
iwl_pcie_ctxt_info_free_paging(trans);
if (trans->cfg->device_family >= IWL_DEVICE_FAMILY_22560)
iwl_pcie_ctxt_info_gen3_free(trans);
else
iwl_pcie_ctxt_info_free(trans);
/* Make sure (redundant) we've released our request to stay awake */
iwl_clear_bit(trans, CSR_GP_CNTRL,
BIT(trans->cfg->csr->flag_mac_access_req));
/* Stop the device, and put it in low power state */
iwl_pcie_gen2_apm_stop(trans, false);
iwl_trans_sw_reset(trans);
/*
* Upon stop, the IVAR table gets erased, so msi-x won't
* work. This causes a bug in RF-KILL flows, since the interrupt
* that enables radio won't fire on the correct irq, and the
* driver won't be able to handle the interrupt.
* Configure the IVAR table again after reset.
*/
iwl_pcie_conf_msix_hw(trans_pcie);
/*
* Upon stop, the APM issues an interrupt if HW RF kill is set.
* This is a bug in certain verions of the hardware.
* Certain devices also keep sending HW RF kill interrupt all
* the time, unless the interrupt is ACKed even if the interrupt
* should be masked. Re-ACK all the interrupts here.
*/
iwl_disable_interrupts(trans);
/* clear all status bits */
clear_bit(STATUS_SYNC_HCMD_ACTIVE, &trans->status);
clear_bit(STATUS_INT_ENABLED, &trans->status);
clear_bit(STATUS_TPOWER_PMI, &trans->status);
/*
* Even if we stop the HW, we still want the RF kill
* interrupt
*/
iwl_enable_rfkill_int(trans);
/* re-take ownership to prevent other users from stealing the device */
iwl_pcie_prepare_card_hw(trans);
}
