mei: me: use an index instead of a pointer for private data

Device 'new_id' interface is useful for testing of not yet published
hardware on older kernels and for internally used device ids on
simulation platforms.
However currently with the device configuration held in device_id driver
data as a pointer to mei_cfg structure it is hard, as one need to locate
the address of the correct structure.
A recommended way of doing that is to use and index instead of a
pointer.
This patch adds a new list of configuration mei_cfg_list[]
indexed via enum mei_cfg_idx.
In addition it cleanups ich platform naming, renames legacy
generation to ich and what was ich to ich10.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 31 insertions, 8 deletions

diff --git a/drivers/misc/mei/hw-me.h b/drivers/misc/mei/hw-me.h
index cf64847a35b9..67892533576e 100644
--- a/drivers/misc/mei/hw-me.h
+++ b/drivers/misc/mei/hw-me.h
@@ -41,8 +41,7 @@ struct mei_cfg {
 #define MEI_PCI_DEVICE(dev, cfg) \
 	.vendor = PCI_VENDOR_ID_INTEL, .device = (dev), \
 	.subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID, \
-	.driver_data = (kernel_ulong_t)&(cfg)
-
+	.driver_data = (kernel_ulong_t)(cfg),
 
 #define MEI_ME_RPM_TIMEOUT    500 /* ms */
 
@@ -63,12 +62,36 @@ struct mei_me_hw {
 
 #define to_me_hw(dev) (struct mei_me_hw *)((dev)->hw)
 
-extern const struct mei_cfg mei_me_legacy_cfg;
-extern const struct mei_cfg mei_me_ich_cfg;
-extern const struct mei_cfg mei_me_pch_cfg;
-extern const struct mei_cfg mei_me_pch_cpt_pbg_cfg;
-extern const struct mei_cfg mei_me_pch8_cfg;
-extern const struct mei_cfg mei_me_pch8_sps_cfg;
+/**
+ * enum mei_cfg_idx - indices to platform specific configurations.
+ *
+ * Note: has to be synchronized with mei_cfg_list[]
+ *
+ * @MEI_ME_UNDEF_CFG:      Lower sentinel.
+ * @MEI_ME_ICH_CFG:        I/O Controller Hub legacy devices.
+ * @MEI_ME_ICH10_CFG:      I/O Controller Hub platforms Gen10
+ * @MEI_ME_PCH_CFG:        Platform Controller Hub platforms (Up to Gen8).
+ * @MEI_ME_PCH_CPT_PBG_CFG:Platform Controller Hub workstations
+ *                         with quirk for Node Manager exclusion.
+ * @MEI_ME_PCH8_CFG:       Platform Controller Hub Gen8 and newer
+ *                         client platforms.
+ * @MEI_ME_PCH8_SPS_CFG:   Platform Controller Hub Gen8 and newer
+ *                         servers platforms with quirk for
+ *                         SPS firmware exclusion.
+ * @MEI_ME_NUM_CFG:        Upper Sentinel.
+ */
+enum mei_cfg_idx {
+	MEI_ME_UNDEF_CFG,
+	MEI_ME_ICH_CFG,
+	MEI_ME_ICH10_CFG,
+	MEI_ME_PCH_CFG,
+	MEI_ME_PCH_CPT_PBG_CFG,
+	MEI_ME_PCH8_CFG,
+	MEI_ME_PCH8_SPS_CFG,
+	MEI_ME_NUM_CFG,
+};
+
+const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx);
 
 struct mei_device *mei_me_dev_init(struct pci_dev *pdev,
 				   const struct mei_cfg *cfg);