From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Reed Subject: Re: [PATCH 2/2] qla1280: retain firmware for error recovery Date: Tue, 09 Mar 2010 16:00:28 -0600 Message-ID: <4B96C4FC.8090801@sgi.com> References: <4B708077.8010709@sgi.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from relay1.sgi.com ([192.48.179.29]:49075 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752095Ab0CIWAa (ORCPT ); Tue, 9 Mar 2010 17:00:30 -0500 In-Reply-To: <4B708077.8010709@sgi.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi , James Bottomley Hi James, I've seen no response from Jes on this patch. I'm uncertain how to reach him these days. Have you any comments on this patch? Thanks, Mike Michael Reed wrote: > The qla1280 driver acquires its firmware via udev. During boot the firmware > is located in the initrd. If, after root is mounted, the adapter needs to > reload firmware (host reset), the firmware load may fail if the root device > is on the adapter being reset. This patch modifies qla1280 to retain the > firmware loaded via the initial request_firmware() for use during error > recovery. > > Signed-off-by: Michael Reed > > > --- linux-2.6.32.5-0.1/drivers/scsi/qla1280.c 2010-02-04 16:23:10.831352910 -0600 > +++ linux-2.6.32.5-0.1-modified/drivers/scsi/qla1280.c 2010-02-08 15:05:42.402094235 -0600 > @@ -17,9 +17,11 @@ > * General Public License for more details. > * > ******************************************************************************/ > -#define QLA1280_VERSION "3.27" > +#define QLA1280_VERSION "3.27.1" > /***************************************************************************** > Revision History: > + Rev 3.27.1, February 8, 2010, Michael Reed > + - Retain firmware image for error recovery. > Rev 3.27, February 10, 2009, Michael Reed > - General code cleanup. > - Improve error recovery. > @@ -538,9 +540,9 @@ __setup("qla1280=", qla1280_setup); > /*****************************************/ > > struct qla_boards { > - unsigned char name[9]; /* Board ID String */ > + char *name; /* Board ID String */ > int numPorts; /* Number of SCSI ports */ > - char *fwname; /* firmware name */ > + int fw_index; /* index into qla1280_fw_tbl for firmware */ > }; > > /* NOTE: the last argument in each entry is used to index ql1280_board_tbl */ > @@ -561,15 +563,30 @@ static struct pci_device_id qla1280_pci_ > }; > MODULE_DEVICE_TABLE(pci, qla1280_pci_tbl); > > +DEFINE_MUTEX(qla1280_firmware_mutex); > + > +struct qla_fw { > + char *fwname; > + const struct firmware *fw; > +}; > + > +#define QL_NUM_FW_IMAGES 3 > + > +struct qla_fw qla1280_fw_tbl[QL_NUM_FW_IMAGES] = { > + {"qlogic/1040.bin", NULL}, /* image 0 */ > + {"qlogic/1280.bin", NULL}, /* image 1 */ > + {"qlogic/12160.bin", NULL}, /* image 2 */ > +}; > + > +/* NOTE: Order of boards in this table must match order in qla1280_pci_tbl */ > static struct qla_boards ql1280_board_tbl[] = { > - /* Name , Number of ports, FW details */ > - {"QLA12160", 2, "qlogic/12160.bin"}, > - {"QLA1040", 1, "qlogic/1040.bin"}, > - {"QLA1080", 1, "qlogic/1280.bin"}, > - {"QLA1240", 2, "qlogic/1280.bin"}, > - {"QLA1280", 2, "qlogic/1280.bin"}, > - {"QLA10160", 1, "qlogic/12160.bin"}, > - {" ", 0, " "}, > + {.name="QLA12160", .numPorts=2, .fw_index=2}, > + {.name="QLA1040" , .numPorts=1, .fw_index=0}, > + {.name="QLA1080" , .numPorts=1, .fw_index=1}, > + {.name="QLA1240" , .numPorts=2, .fw_index=1}, > + {.name="QLA1280" , .numPorts=2, .fw_index=1}, > + {.name="QLA10160", .numPorts=1, .fw_index=2}, > + {.name=" ", .numPorts=0, .fw_index=-1}, > }; > > static int qla1280_verbose = 1; > @@ -1512,6 +1529,63 @@ qla1280_initialize_adapter(struct scsi_q > } > > /* > + * qla1280_request_firmware > + * Acquire firmware for chip. Retain in memory > + * for error recovery. > + * > + * Input: > + * ha = adapter block pointer. > + * > + * Returns: > + * Pointer to firmware image or an error code > + * cast to pointer via ERR_PTR(). > + */ > +static const struct firmware * > +qla1280_request_firmware(struct scsi_qla_host *ha) > +{ > + const struct firmware *fw; > + int err; > + int index; > + char *fwname; > + > + spin_unlock_irq(ha->host->host_lock); > + mutex_lock(&qla1280_firmware_mutex); > + > + index = ql1280_board_tbl[ha->devnum].fw_index; > + fw = qla1280_fw_tbl[index].fw; > + if (fw) > + goto out; > + > + fwname = qla1280_fw_tbl[index].fwname; > + err = request_firmware(&fw, fwname, &ha->pdev->dev); > + > + if (err) { > + printk(KERN_ERR "Failed to load image \"%s\" err %d\n", > + fwname, err); > + fw = ERR_PTR(err); > + goto unlock; > + } > + if ((fw->size % 2) || (fw->size < 6)) { > + printk(KERN_ERR "Invalid firmware length %zu in image \"%s\"\n", > + fw->size, fwname); > + release_firmware(fw); > + fw = ERR_PTR(-EINVAL); > + goto unlock; > + } > + > + qla1280_fw_tbl[index].fw = fw; > + > + out: > + ha->fwver1 = fw->data[0]; > + ha->fwver2 = fw->data[1]; > + ha->fwver3 = fw->data[2]; > + unlock: > + mutex_unlock(&qla1280_firmware_mutex); > + spin_lock_irq(ha->host->host_lock); > + return fw; > +} > + > +/* > * Chip diagnostics > * Test chip for proper operation. > * > @@ -1634,30 +1708,18 @@ qla1280_chip_diag(struct scsi_qla_host * > static int > qla1280_load_firmware_pio(struct scsi_qla_host *ha) > { > + /* enter with host_lock acquired */ > + > const struct firmware *fw; > const __le16 *fw_data; > uint16_t risc_address, risc_code_size; > uint16_t mb[MAILBOX_REGISTER_COUNT], i; > - int err; > + int err=0; > + > + fw = qla1280_request_firmware(ha); > + if (IS_ERR(fw)) > + return PTR_ERR(fw); > > - spin_unlock_irq(ha->host->host_lock); > - err = request_firmware(&fw, ql1280_board_tbl[ha->devnum].fwname, > - &ha->pdev->dev); > - spin_lock_irq(ha->host->host_lock); > - if (err) { > - printk(KERN_ERR "Failed to load image \"%s\" err %d\n", > - ql1280_board_tbl[ha->devnum].fwname, err); > - return err; > - } > - if ((fw->size % 2) || (fw->size < 6)) { > - printk(KERN_ERR "Bogus length %zu in image \"%s\"\n", > - fw->size, ql1280_board_tbl[ha->devnum].fwname); > - err = -EINVAL; > - goto out; > - } > - ha->fwver1 = fw->data[0]; > - ha->fwver2 = fw->data[1]; > - ha->fwver3 = fw->data[2]; > fw_data = (const __le16 *)&fw->data[0]; > ha->fwstart = __le16_to_cpu(fw_data[2]); > > @@ -1675,11 +1737,10 @@ qla1280_load_firmware_pio(struct scsi_ql > if (err) { > printk(KERN_ERR "scsi(%li): Failed to load firmware\n", > ha->host_no); > - goto out; > + break; > } > } > -out: > - release_firmware(fw); > + > return err; > } > > @@ -1687,6 +1748,7 @@ out: > static int > qla1280_load_firmware_dma(struct scsi_qla_host *ha) > { > + /* enter with host_lock acquired */ > const struct firmware *fw; > const __le16 *fw_data; > uint16_t risc_address, risc_code_size; > @@ -1701,24 +1763,10 @@ qla1280_load_firmware_dma(struct scsi_ql > return -ENOMEM; > #endif > > - spin_unlock_irq(ha->host->host_lock); > - err = request_firmware(&fw, ql1280_board_tbl[ha->devnum].fwname, > - &ha->pdev->dev); > - spin_lock_irq(ha->host->host_lock); > - if (err) { > - printk(KERN_ERR "Failed to load image \"%s\" err %d\n", > - ql1280_board_tbl[ha->devnum].fwname, err); > - return err; > - } > - if ((fw->size % 2) || (fw->size < 6)) { > - printk(KERN_ERR "Bogus length %zu in image \"%s\"\n", > - fw->size, ql1280_board_tbl[ha->devnum].fwname); > - err = -EINVAL; > - goto out; > - } > - ha->fwver1 = fw->data[0]; > - ha->fwver2 = fw->data[1]; > - ha->fwver3 = fw->data[2]; > + fw = qla1280_request_firmware(ha); > + if (IS_ERR(fw)) > + return PTR_ERR(fw); > + > fw_data = (const __le16 *)&fw->data[0]; > ha->fwstart = __le16_to_cpu(fw_data[2]); > > @@ -1803,7 +1851,6 @@ qla1280_load_firmware_dma(struct scsi_ql > #if DUMP_IT_BACK > pci_free_consistent(ha->pdev, 8000, tbuf, p_tbuf); > #endif > - release_firmware(fw); > return err; > } > > @@ -1842,6 +1889,7 @@ qla1280_start_firmware(struct scsi_qla_h > static int > qla1280_load_firmware(struct scsi_qla_host *ha) > { > + /* enter with host_lock taken */ > int err; > > err = qla1280_chip_diag(ha); > @@ -4420,7 +4468,16 @@ qla1280_init(void) > static void __exit > qla1280_exit(void) > { > + int i; > + > pci_unregister_driver(&qla1280_pci_driver); > + /* release any allocated firmware images */ > + for (i=0; i + if (qla1280_fw_tbl[i].fw) { > + release_firmware(qla1280_fw_tbl[i].fw); > + qla1280_fw_tbl[i].fw = NULL; > + } > + } > } > > module_init(qla1280_init); > -- > To unsubscribe from this list: send the line "unsubscribe linux-scsi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html