[hermon] Ensure hardware is quiescent when no interfaces are open
WinPE has been observed to call PXENV_UNDI_SHUTDOWN but not PXENV_STOP_UNDI. This means that Hermon hardware is left partially active (firmware running and one event queue mapped) when WinPE starts up, which can cause a Blue Screen of Death. Fix by ensuring that the hardware is left quiescent (with the firmware stopped) when no interfaces are open. Reported-by: Itay Gazit <itayg@mellanox.co.il> Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
parent
a02f9e0ca5
commit
6dd4ac77e5
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@ -2136,7 +2136,7 @@ static int hermon_map_vpm ( struct hermon *hermon,
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static int hermon_start_firmware ( struct hermon *hermon ) {
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struct hermonprm_query_fw fw;
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unsigned int fw_pages;
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size_t fw_size;
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size_t fw_len;
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physaddr_t fw_base;
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int rc;
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@ -2154,17 +2154,22 @@ static int hermon_start_firmware ( struct hermon *hermon ) {
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hermon, fw_pages, ( fw_pages * 4 ) );
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/* Allocate firmware pages and map firmware area */
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fw_size = ( fw_pages * HERMON_PAGE_SIZE );
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hermon->firmware_area = umalloc ( fw_size );
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fw_len = ( fw_pages * HERMON_PAGE_SIZE );
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if ( ! hermon->firmware_area ) {
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rc = -ENOMEM;
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goto err_alloc_fa;
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hermon->firmware_len = fw_len;
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hermon->firmware_area = umalloc ( hermon->firmware_len );
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if ( ! hermon->firmware_area ) {
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rc = -ENOMEM;
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goto err_alloc_fa;
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}
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} else {
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assert ( hermon->firmware_len == fw_len );
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}
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fw_base = user_to_phys ( hermon->firmware_area, 0 );
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DBGC ( hermon, "Hermon %p firmware area at physical [%08lx,%08lx)\n",
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hermon, fw_base, ( fw_base + fw_size ) );
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hermon, fw_base, ( fw_base + fw_len ) );
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if ( ( rc = hermon_map_vpm ( hermon, hermon_cmd_map_fa,
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0, fw_base, fw_size ) ) != 0 ) {
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0, fw_base, fw_len ) ) != 0 ) {
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DBGC ( hermon, "Hermon %p could not map firmware: %s\n",
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hermon, strerror ( rc ) );
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goto err_map_fa;
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@ -2183,8 +2188,6 @@ static int hermon_start_firmware ( struct hermon *hermon ) {
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err_run_fw:
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err_map_fa:
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hermon_cmd_unmap_fa ( hermon );
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ufree ( hermon->firmware_area );
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hermon->firmware_area = UNULL;
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err_alloc_fa:
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err_query_fw:
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return rc;
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@ -2202,10 +2205,9 @@ static void hermon_stop_firmware ( struct hermon *hermon ) {
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DBGC ( hermon, "Hermon %p FATAL could not stop firmware: %s\n",
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hermon, strerror ( rc ) );
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/* Leak memory and return; at least we avoid corruption */
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hermon->firmware_area = UNULL;
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return;
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}
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ufree ( hermon->firmware_area );
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hermon->firmware_area = UNULL;
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}
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/***************************************************************************
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@ -2285,14 +2287,14 @@ static uint64_t icm_align ( uint64_t icm_offset, size_t len ) {
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}
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/**
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* Allocate ICM
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* Map ICM (allocating if necessary)
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*
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* @v hermon Hermon device
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* @v init_hca INIT_HCA structure to fill in
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* @ret rc Return status code
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*/
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static int hermon_alloc_icm ( struct hermon *hermon,
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struct hermonprm_init_hca *init_hca ) {
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static int hermon_map_icm ( struct hermon *hermon,
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struct hermonprm_init_hca *init_hca ) {
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struct hermonprm_scalar_parameter icm_size;
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struct hermonprm_scalar_parameter icm_aux_size;
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uint64_t icm_offset = 0;
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@ -2519,10 +2521,17 @@ static int hermon_alloc_icm ( struct hermon *hermon,
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/* Allocate ICM data and auxiliary area */
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DBGC ( hermon, "Hermon %p requires %zd kB ICM and %zd kB AUX ICM\n",
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hermon, ( icm_len / 1024 ), ( icm_aux_len / 1024 ) );
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hermon->icm = umalloc ( icm_aux_len + icm_len );
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if ( ! hermon->icm ) {
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rc = -ENOMEM;
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goto err_alloc;
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hermon->icm_len = icm_len;
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hermon->icm_aux_len = icm_aux_len;
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hermon->icm = umalloc ( hermon->icm_aux_len + hermon->icm_len );
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if ( ! hermon->icm ) {
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rc = -ENOMEM;
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goto err_alloc;
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}
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} else {
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assert ( hermon->icm_len == icm_len );
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assert ( hermon->icm_aux_len == icm_aux_len );
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}
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icm_phys = user_to_phys ( hermon->icm, 0 );
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@ -2559,19 +2568,17 @@ static int hermon_alloc_icm ( struct hermon *hermon,
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assert ( i == 0 ); /* We don't handle partial failure at present */
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err_map_icm_aux:
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hermon_cmd_unmap_icm_aux ( hermon );
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ufree ( hermon->icm );
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hermon->icm = UNULL;
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err_alloc:
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err_set_icm_size:
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return rc;
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}
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/**
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* Free ICM
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* Unmap ICM
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*
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* @v hermon Hermon device
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*/
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static void hermon_free_icm ( struct hermon *hermon ) {
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static void hermon_unmap_icm ( struct hermon *hermon ) {
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struct hermonprm_scalar_parameter unmap_icm;
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int i;
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@ -2587,13 +2594,11 @@ static void hermon_free_icm ( struct hermon *hermon ) {
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&unmap_icm );
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}
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hermon_cmd_unmap_icm_aux ( hermon );
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ufree ( hermon->icm );
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hermon->icm = UNULL;
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}
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/***************************************************************************
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*
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* Initialisation
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* Initialisation and teardown
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*
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***************************************************************************
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*/
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@ -2602,19 +2607,22 @@ static void hermon_free_icm ( struct hermon *hermon ) {
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* Reset device
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*
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* @v hermon Hermon device
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* @v pci PCI device
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*/
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static void hermon_reset ( struct hermon *hermon,
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struct pci_device *pci ) {
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static void hermon_reset ( struct hermon *hermon ) {
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struct pci_device *pci = hermon->pci;
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struct pci_config_backup backup;
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static const uint8_t backup_exclude[] =
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PCI_CONFIG_BACKUP_EXCLUDE ( 0x58, 0x5c );
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/* Perform device reset and preserve PCI configuration */
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pci_backup ( pci, &backup, backup_exclude );
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writel ( HERMON_RESET_MAGIC,
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( hermon->config + HERMON_RESET_OFFSET ) );
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mdelay ( HERMON_RESET_WAIT_TIME_MS );
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pci_restore ( pci, &backup, backup_exclude );
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/* Reset command interface toggle */
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hermon->toggle = 0;
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}
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/**
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@ -2686,6 +2694,118 @@ static int hermon_configure_special_qps ( struct hermon *hermon ) {
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return 0;
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}
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/**
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* Start Hermon device
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*
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* @v hermon Hermon device
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* @v running Firmware is already running
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* @ret rc Return status code
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*/
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static int hermon_start ( struct hermon *hermon, int running ) {
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struct hermonprm_init_hca init_hca;
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unsigned int i;
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int rc;
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/* Start firmware if not already running */
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if ( ! running ) {
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if ( ( rc = hermon_start_firmware ( hermon ) ) != 0 )
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goto err_start_firmware;
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}
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/* Allocate and map ICM */
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memset ( &init_hca, 0, sizeof ( init_hca ) );
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if ( ( rc = hermon_map_icm ( hermon, &init_hca ) ) != 0 )
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goto err_map_icm;
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/* Initialise HCA */
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MLX_FILL_1 ( &init_hca, 0, version, 0x02 /* "Must be 0x02" */ );
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MLX_FILL_1 ( &init_hca, 5, udp, 1 );
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MLX_FILL_1 ( &init_hca, 74, uar_parameters.log_max_uars, 8 );
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if ( ( rc = hermon_cmd_init_hca ( hermon, &init_hca ) ) != 0 ) {
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DBGC ( hermon, "Hermon %p could not initialise HCA: %s\n",
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hermon, strerror ( rc ) );
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goto err_init_hca;
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}
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/* Set up memory protection */
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if ( ( rc = hermon_setup_mpt ( hermon ) ) != 0 )
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goto err_setup_mpt;
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for ( i = 0 ; i < hermon->cap.num_ports ; i++ )
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hermon->port[i].ibdev->rdma_key = hermon->lkey;
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/* Set up event queue */
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if ( ( rc = hermon_create_eq ( hermon ) ) != 0 )
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goto err_create_eq;
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/* Configure special QPs */
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if ( ( rc = hermon_configure_special_qps ( hermon ) ) != 0 )
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goto err_conf_special_qps;
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return 0;
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err_conf_special_qps:
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hermon_destroy_eq ( hermon );
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err_create_eq:
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err_setup_mpt:
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hermon_cmd_close_hca ( hermon );
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err_init_hca:
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hermon_unmap_icm ( hermon );
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err_map_icm:
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hermon_stop_firmware ( hermon );
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err_start_firmware:
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return rc;
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}
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/**
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* Stop Hermon device
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*
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* @v hermon Hermon device
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*/
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static void hermon_stop ( struct hermon *hermon ) {
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hermon_destroy_eq ( hermon );
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hermon_cmd_close_hca ( hermon );
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hermon_unmap_icm ( hermon );
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hermon_stop_firmware ( hermon );
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hermon_reset ( hermon );
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}
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/**
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* Open Hermon device
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*
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* @v hermon Hermon device
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* @ret rc Return status code
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*/
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static int hermon_open ( struct hermon *hermon ) {
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int rc;
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/* Start device if applicable */
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if ( hermon->open_count == 0 ) {
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if ( ( rc = hermon_start ( hermon, 0 ) ) != 0 )
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return rc;
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}
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/* Increment open counter */
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hermon->open_count++;
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return 0;
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}
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/**
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* Close Hermon device
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*
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* @v hermon Hermon device
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*/
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static void hermon_close ( struct hermon *hermon ) {
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/* Decrement open counter */
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assert ( hermon->open_count != 0 );
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hermon->open_count--;
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/* Stop device if applicable */
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if ( hermon->open_count == 0 )
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hermon_stop ( hermon );
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}
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/***************************************************************************
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*
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* Infiniband link-layer operations
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@ -2699,11 +2819,15 @@ static int hermon_configure_special_qps ( struct hermon *hermon ) {
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* @v ibdev Infiniband device
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* @ret rc Return status code
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*/
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static int hermon_open ( struct ib_device *ibdev ) {
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static int hermon_ib_open ( struct ib_device *ibdev ) {
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struct hermon *hermon = ib_get_drvdata ( ibdev );
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union hermonprm_set_port set_port;
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int rc;
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/* Open hardware */
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if ( ( rc = hermon_open ( hermon ) ) != 0 )
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goto err_open;
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/* Set port parameters */
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memset ( &set_port, 0, sizeof ( set_port ) );
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MLX_FILL_8 ( &set_port.ib, 0,
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@ -2724,20 +2848,26 @@ static int hermon_open ( struct ib_device *ibdev ) {
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&set_port ) ) != 0 ) {
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DBGC ( hermon, "Hermon %p port %d could not set port: %s\n",
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hermon, ibdev->port, strerror ( rc ) );
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return rc;
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goto err_set_port;
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}
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/* Initialise port */
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if ( ( rc = hermon_cmd_init_port ( hermon, ibdev->port ) ) != 0 ) {
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DBGC ( hermon, "Hermon %p port %d could not initialise port: "
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"%s\n", hermon, ibdev->port, strerror ( rc ) );
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return rc;
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goto err_init_port;
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}
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/* Update MAD parameters */
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ib_smc_update ( ibdev, hermon_mad );
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return 0;
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err_init_port:
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err_set_port:
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hermon_close ( hermon );
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err_open:
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return rc;
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}
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/**
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@ -2745,15 +2875,19 @@ static int hermon_open ( struct ib_device *ibdev ) {
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*
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* @v ibdev Infiniband device
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*/
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static void hermon_close ( struct ib_device *ibdev ) {
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static void hermon_ib_close ( struct ib_device *ibdev ) {
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struct hermon *hermon = ib_get_drvdata ( ibdev );
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int rc;
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/* Close port */
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if ( ( rc = hermon_cmd_close_port ( hermon, ibdev->port ) ) != 0 ) {
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DBGC ( hermon, "Hermon %p port %d could not close port: %s\n",
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hermon, ibdev->port, strerror ( rc ) );
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/* Nothing we can do about this */
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}
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/* Close hardware */
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hermon_close ( hermon );
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}
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/**
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@ -2883,8 +3017,8 @@ static struct ib_device_operations hermon_ib_operations = {
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.post_recv = hermon_post_recv,
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.poll_cq = hermon_poll_cq,
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.poll_eq = hermon_poll_eq,
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.open = hermon_open,
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.close = hermon_close,
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.open = hermon_ib_open,
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.close = hermon_ib_close,
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.mcast_attach = hermon_mcast_attach,
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.mcast_detach = hermon_mcast_detach,
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.set_port_info = hermon_inform_sma,
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@ -3073,6 +3207,10 @@ static int hermon_eth_open ( struct net_device *netdev ) {
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union hermonprm_set_port set_port;
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int rc;
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/* Open hardware */
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if ( ( rc = hermon_open ( hermon ) ) != 0 )
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goto err_open;
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/* Allocate completion queue */
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port->eth_cq = ib_create_cq ( ibdev, HERMON_ETH_NUM_CQES,
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&hermon_eth_cq_op );
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@ -3167,6 +3305,8 @@ static int hermon_eth_open ( struct net_device *netdev ) {
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err_create_qp:
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ib_destroy_cq ( ibdev, port->eth_cq );
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err_create_cq:
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hermon_close ( hermon );
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err_open:
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return rc;
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}
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@ -3191,6 +3331,9 @@ static void hermon_eth_close ( struct net_device *netdev ) {
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/* Tear down the queues */
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ib_destroy_qp ( ibdev, port->eth_qp );
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ib_destroy_cq ( ibdev, port->eth_cq );
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/* Close hardware */
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hermon_close ( hermon );
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}
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/** Hermon Ethernet network device operations */
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@ -3562,6 +3705,8 @@ static struct hermon * hermon_alloc ( void ) {
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*/
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static void hermon_free ( struct hermon *hermon ) {
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ufree ( hermon->icm );
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ufree ( hermon->firmware_area );
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free_dma ( hermon->mailbox_out, HERMON_MBOX_SIZE );
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free_dma ( hermon->mailbox_in, HERMON_MBOX_SIZE );
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free ( hermon );
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@ -3571,9 +3716,9 @@ static void hermon_free ( struct hermon *hermon ) {
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* Initialise Hermon PCI parameters
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*
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* @v hermon Hermon device
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* @v pci PCI device
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*/
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static void hermon_pci_init ( struct hermon *hermon, struct pci_device *pci ) {
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static void hermon_pci_init ( struct hermon *hermon ) {
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struct pci_device *pci = hermon->pci;
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/* Fix up PCI device */
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adjust_pci_device ( pci );
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@ -3597,7 +3742,6 @@ static int hermon_probe ( struct pci_device *pci ) {
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struct ib_device *ibdev;
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struct net_device *netdev;
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struct hermon_port *port;
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struct hermonprm_init_hca init_hca;
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unsigned int i;
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int rc;
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@ -3608,12 +3752,13 @@ static int hermon_probe ( struct pci_device *pci ) {
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goto err_alloc;
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}
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pci_set_drvdata ( pci, hermon );
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hermon->pci = pci;
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/* Initialise PCI parameters */
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hermon_pci_init ( hermon, pci );
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hermon_pci_init ( hermon );
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/* Reset device */
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hermon_reset ( hermon, pci );
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hermon_reset ( hermon );
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/* Start firmware */
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if ( ( rc = hermon_start_firmware ( hermon ) ) != 0 )
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@ -3650,34 +3795,9 @@ static int hermon_probe ( struct pci_device *pci ) {
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netdev->priv = &hermon->port[i];
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}
|
||||
|
||||
/* Allocate ICM */
|
||||
memset ( &init_hca, 0, sizeof ( init_hca ) );
|
||||
if ( ( rc = hermon_alloc_icm ( hermon, &init_hca ) ) != 0 )
|
||||
goto err_alloc_icm;
|
||||
|
||||
/* Initialise HCA */
|
||||
MLX_FILL_1 ( &init_hca, 0, version, 0x02 /* "Must be 0x02" */ );
|
||||
MLX_FILL_1 ( &init_hca, 5, udp, 1 );
|
||||
MLX_FILL_1 ( &init_hca, 74, uar_parameters.log_max_uars, 8 );
|
||||
if ( ( rc = hermon_cmd_init_hca ( hermon, &init_hca ) ) != 0 ) {
|
||||
DBGC ( hermon, "Hermon %p could not initialise HCA: %s\n",
|
||||
hermon, strerror ( rc ) );
|
||||
goto err_init_hca;
|
||||
}
|
||||
|
||||
/* Set up memory protection */
|
||||
if ( ( rc = hermon_setup_mpt ( hermon ) ) != 0 )
|
||||
goto err_setup_mpt;
|
||||
for ( i = 0 ; i < hermon->cap.num_ports ; i++ )
|
||||
hermon->port[i].ibdev->rdma_key = hermon->lkey;
|
||||
|
||||
/* Set up event queue */
|
||||
if ( ( rc = hermon_create_eq ( hermon ) ) != 0 )
|
||||
goto err_create_eq;
|
||||
|
||||
/* Configure special QPs */
|
||||
if ( ( rc = hermon_configure_special_qps ( hermon ) ) != 0 )
|
||||
goto err_conf_special_qps;
|
||||
/* Start device */
|
||||
if ( ( rc = hermon_start ( hermon, 1 ) ) != 0 )
|
||||
goto err_start;
|
||||
|
||||
/* Determine port types */
|
||||
for ( i = 0 ; i < hermon->cap.num_ports ; i++ ) {
|
||||
|
|
@ -3693,6 +3813,10 @@ static int hermon_probe ( struct pci_device *pci ) {
|
|||
goto err_register;
|
||||
}
|
||||
|
||||
/* Leave device quiescent until opened */
|
||||
if ( hermon->open_count == 0 )
|
||||
hermon_stop ( hermon );
|
||||
|
||||
return 0;
|
||||
|
||||
i = hermon->cap.num_ports;
|
||||
|
|
@ -3702,14 +3826,8 @@ static int hermon_probe ( struct pci_device *pci ) {
|
|||
port->type->unregister_dev ( hermon, port );
|
||||
}
|
||||
err_set_port_type:
|
||||
err_conf_special_qps:
|
||||
hermon_destroy_eq ( hermon );
|
||||
err_create_eq:
|
||||
err_setup_mpt:
|
||||
hermon_cmd_close_hca ( hermon );
|
||||
err_init_hca:
|
||||
hermon_free_icm ( hermon );
|
||||
err_alloc_icm:
|
||||
hermon_stop ( hermon );
|
||||
err_start:
|
||||
i = hermon->cap.num_ports;
|
||||
err_alloc_netdev:
|
||||
for ( i-- ; ( signed int ) i >= 0 ; i-- ) {
|
||||
|
|
@ -3742,10 +3860,6 @@ static void hermon_remove ( struct pci_device *pci ) {
|
|||
port = &hermon->port[i];
|
||||
port->type->unregister_dev ( hermon, port );
|
||||
}
|
||||
hermon_destroy_eq ( hermon );
|
||||
hermon_cmd_close_hca ( hermon );
|
||||
hermon_free_icm ( hermon );
|
||||
hermon_stop_firmware ( hermon );
|
||||
for ( i = ( hermon->cap.num_ports - 1 ) ; i >= 0 ; i-- ) {
|
||||
netdev_nullify ( hermon->port[i].netdev );
|
||||
netdev_put ( hermon->port[i].netdev );
|
||||
|
|
@ -3773,9 +3887,10 @@ static int hermon_bofm_probe ( struct pci_device *pci ) {
|
|||
goto err_alloc;
|
||||
}
|
||||
pci_set_drvdata ( pci, hermon );
|
||||
hermon->pci = pci;
|
||||
|
||||
/* Initialise PCI parameters */
|
||||
hermon_pci_init ( hermon, pci );
|
||||
hermon_pci_init ( hermon );
|
||||
|
||||
/* Initialise BOFM device */
|
||||
bofm_init ( &hermon->bofm, pci, &hermon_bofm_operations );
|
||||
|
|
|
|||
|
|
@ -829,6 +829,8 @@ struct hermon_port {
|
|||
|
||||
/** A Hermon device */
|
||||
struct hermon {
|
||||
/** PCI device */
|
||||
struct pci_device *pci;
|
||||
/** PCI configuration registers */
|
||||
void *config;
|
||||
/** PCI user Access Region */
|
||||
|
|
@ -841,11 +843,30 @@ struct hermon {
|
|||
/** Command output mailbox */
|
||||
void *mailbox_out;
|
||||
|
||||
/** Firmware area in external memory */
|
||||
/** Device open request counter */
|
||||
unsigned int open_count;
|
||||
|
||||
/** Firmware size */
|
||||
size_t firmware_len;
|
||||
/** Firmware area in external memory
|
||||
*
|
||||
* This is allocated when first needed, and freed only on
|
||||
* final teardown, in order to avoid memory map changes at
|
||||
* runtime.
|
||||
*/
|
||||
userptr_t firmware_area;
|
||||
/** ICM map */
|
||||
struct hermon_icm_map icm_map[HERMON_ICM_NUM_REGIONS];
|
||||
/** ICM area */
|
||||
/** ICM size */
|
||||
size_t icm_len;
|
||||
/** ICM AUX size */
|
||||
size_t icm_aux_len;
|
||||
/** ICM area
|
||||
*
|
||||
* This is allocated when first needed, and freed only on
|
||||
* final teardown, in order to avoid memory map changes at
|
||||
* runtime.
|
||||
*/
|
||||
userptr_t icm;
|
||||
|
||||
/** Event queue */
|
||||
|
|
|
|||
Reference in New Issue