[PATCH v2 02/18] megaraid_sas: Add support for Non-secure Aero PCI IDs

[Chandrakanth Patil]

This patch will add support for Non-secure Aero adapters' PCI IDs.
Driver will throw an error message when a non-secure type controller
is detected. Purpose of this interface is to avoid interacting with
any firmware which is not secured/signed by Broadcom. Any tampering on
Firmware component will be detected by hardware and it will be
communicated to the driver to avoid any further interaction with
that component.

Signed-off-by: Sumit Saxena <sumit.sax...@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.pa...@broadcom.com>
---
 drivers/scsi/megaraid/megaraid_sas.h      |  4 ++++
 drivers/scsi/megaraid/megaraid_sas_base.c | 25 +++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/drivers/scsi/megaraid/megaraid_sas.h 
b/drivers/scsi/megaraid/megaraid_sas.h
index a08dd9c..61bcf7a 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -64,6 +64,10 @@
 #define PCI_DEVICE_ID_LSI_AERO_10E2            0x10e2
 #define PCI_DEVICE_ID_LSI_AERO_10E5            0x10e5
 #define PCI_DEVICE_ID_LSI_AERO_10E6            0x10e6
+#define PCI_DEVICE_ID_LSI_AERO_10E0            0x10e0
+#define PCI_DEVICE_ID_LSI_AERO_10E3            0x10e3
+#define PCI_DEVICE_ID_LSI_AERO_10E4            0x10e4
+#define PCI_DEVICE_ID_LSI_AERO_10E7            0x10e7
 
 /*
  * Intel HBA SSDIDs
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c 
b/drivers/scsi/megaraid/megaraid_sas_base.c
index 5490898..7d1cf4e 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -168,6 +168,10 @@ static struct pci_device_id megasas_pci_table[] = {
        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
+       {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
+       {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
+       {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
+       {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
        {}
 };
 
@@ -6991,6 +6995,12 @@ static int megasas_probe_one(struct pci_dev *pdev,
        u16 control = 0;
 
        switch (pdev->device) {
+       case PCI_DEVICE_ID_LSI_AERO_10E0:
+       case PCI_DEVICE_ID_LSI_AERO_10E3:
+       case PCI_DEVICE_ID_LSI_AERO_10E4:
+       case PCI_DEVICE_ID_LSI_AERO_10E7:
+               dev_err(&pdev->dev, "Adapter is in non secure mode\n");
+               return 1;
        case PCI_DEVICE_ID_LSI_AERO_10E1:
        case PCI_DEVICE_ID_LSI_AERO_10E5:
                dev_info(&pdev->dev, "Adapter is in configurable secure 
mode\n");
@@ -7246,6 +7256,10 @@ megasas_suspend(struct pci_dev *pdev, pm_message_t state)
        struct megasas_instance *instance;
 
        instance = pci_get_drvdata(pdev);
+
+       if (!instance)
+               return 0;
+
        instance->unload = 1;
 
        dev_info(&pdev->dev, "%s is called\n", __func__);
@@ -7299,6 +7313,10 @@ megasas_resume(struct pci_dev *pdev)
        int irq_flags = PCI_IRQ_LEGACY;
 
        instance = pci_get_drvdata(pdev);
+
+       if (!instance)
+               return 0;
+
        host = instance->host;
        pci_set_power_state(pdev, PCI_D0);
        pci_enable_wake(pdev, PCI_D0, 0);
@@ -7467,6 +7485,10 @@ static void megasas_detach_one(struct pci_dev *pdev)
        u32 pd_seq_map_sz;
 
        instance = pci_get_drvdata(pdev);
+
+       if (!instance)
+               return;
+
        host = instance->host;
        fusion = instance->ctrl_context;
 
@@ -7595,6 +7617,9 @@ static void megasas_shutdown(struct pci_dev *pdev)
 {
        struct megasas_instance *instance = pci_get_drvdata(pdev);
 
+       if (!instance)
+               return;
+
        instance->unload = 1;
 
        if (megasas_wait_for_adapter_operational(instance))
-- 
2.9.5