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path: root/drivers/scsi/isci/probe_roms.c
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Diffstat (limited to 'drivers/scsi/isci/probe_roms.c')
-rw-r--r--drivers/scsi/isci/probe_roms.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/drivers/scsi/isci/probe_roms.c b/drivers/scsi/isci/probe_roms.c
new file mode 100644
index 000000000000..0b90e7c546c0
--- /dev/null
+++ b/drivers/scsi/isci/probe_roms.c
@@ -0,0 +1,133 @@
+/*
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ */
+
+/* probe_roms - scan for oem parameters */
+
+#include <linux/kernel.h>
+#include <linux/firmware.h>
+#include <linux/uaccess.h>
+#include <asm/probe_roms.h>
+
+#include "isci.h"
+#include "task.h"
+#include "sci_controller_constants.h"
+#include "scic_remote_device.h"
+#include "sci_environment.h"
+#include "probe_roms.h"
+
+struct isci_orom *isci_request_oprom(struct pci_dev *pdev)
+{
+ void __iomem *oprom = pci_map_biosrom(pdev);
+ struct isci_orom *rom = NULL;
+ size_t len, i;
+
+ if (!oprom)
+ return NULL;
+
+ len = pci_biosrom_size(pdev);
+ rom = devm_kzalloc(&pdev->dev, sizeof(*rom), GFP_KERNEL);
+
+ for (i = 0; i < len && rom; i += ISCI_ROM_SIG_SIZE) {
+ memcpy_fromio(rom->hdr.signature, oprom + i, ISCI_ROM_SIG_SIZE);
+ if (memcmp(rom->hdr.signature, ISCI_ROM_SIG,
+ ISCI_ROM_SIG_SIZE) == 0) {
+ size_t copy_len = min(len - i, sizeof(*rom));
+
+ memcpy_fromio(rom, oprom + i, copy_len);
+ break;
+ }
+ }
+
+ if (i >= len) {
+ dev_err(&pdev->dev, "oprom parse error\n");
+ devm_kfree(&pdev->dev, rom);
+ rom = NULL;
+ }
+ pci_unmap_biosrom(oprom);
+
+ return rom;
+}
+
+/**
+ * isci_parse_oem_parameters() - This method will take OEM parameters
+ * from the module init parameters and copy them to oem_params. This will
+ * only copy values that are not set to the module parameter default values
+ * @oem_parameters: This parameter specifies the controller default OEM
+ * parameters. It is expected that this has been initialized to the default
+ * parameters for the controller
+ *
+ *
+ */
+enum sci_status isci_parse_oem_parameters(union scic_oem_parameters *oem_params,
+ struct isci_orom *orom, int scu_index)
+{
+ int i;
+
+ /* check for valid inputs */
+ if (!(scu_index >= 0
+ && scu_index < SCI_MAX_CONTROLLERS
+ && oem_params != NULL))
+ return -EINVAL;
+
+ for (i = 0; i < SCI_MAX_PHYS; i++) {
+ oem_params->sds1.phys[i].sas_address.low =
+ orom->ctrl[scu_index].phys[i].sas_address.low;
+ oem_params->sds1.phys[i].sas_address.high =
+ orom->ctrl[scu_index].phys[i].sas_address.high;
+ }
+
+ for (i = 0; i < SCI_MAX_PORTS; i++)
+ oem_params->sds1.ports[i].phy_mask =
+ orom->ctrl[scu_index].ports[i].phy_mask;
+
+ return 0;
+}
+
+struct isci_orom *isci_request_firmware(struct pci_dev *pdev, const struct firmware *fw)
+{
+ struct isci_orom *orom = NULL, *data;
+
+ if (request_firmware(&fw, ISCI_FW_NAME, &pdev->dev) != 0)
+ return NULL;
+
+ if (fw->size < sizeof(*orom))
+ goto out;
+
+ data = (struct isci_orom *)fw->data;
+
+ if (strncmp(ISCI_ROM_SIG, data->hdr.signature,
+ strlen(ISCI_ROM_SIG)) != 0)
+ goto out;
+
+ orom = devm_kzalloc(&pdev->dev, fw->size, GFP_KERNEL);
+ if (!orom)
+ goto out;
+
+ memcpy(orom, fw->data, fw->size);
+
+ out:
+ release_firmware(fw);
+
+ return orom;
+}