* [char-misc-next 02/15] mei: use unified format for printing mei message header
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 03/15] mei: move internal host clients ids to mei_dev.h from hw.h Tomas Winkler
` (12 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/amthif.c | 3 +--
drivers/misc/mei/interface.c | 4 +---
drivers/misc/mei/interrupt.c | 14 ++++++--------
drivers/misc/mei/main.c | 5 +++--
drivers/misc/mei/mei_dev.h | 5 +++++
5 files changed, 16 insertions(+), 15 deletions(-)
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index 8a9313a..77acd23 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -457,8 +457,7 @@ int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots,
return 0;
}
- dev_dbg(&dev->pdev->dev, "msg: len = %d complete = %d\n",
- mei_hdr->length, mei_hdr->msg_complete);
+ dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
*slots -= msg_slots;
if (mei_write_message(dev, mei_hdr,
diff --git a/drivers/misc/mei/interface.c b/drivers/misc/mei/interface.c
index 21ccbe6..17d93f7 100644
--- a/drivers/misc/mei/interface.c
+++ b/drivers/misc/mei/interface.c
@@ -127,9 +127,7 @@ int mei_write_message(struct mei_device *dev, struct mei_msg_hdr *header,
int i;
int empty_slots;
- dev_dbg(&dev->pdev->dev,
- "mei_write_message header=%08x.\n",
- *((u32 *) header));
+ dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(header));
empty_slots = mei_hbuf_empty_slots(dev);
dev_dbg(&dev->pdev->dev, "empty slots = %hu.\n", empty_slots);
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index b72fa81..fe93d1c 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -150,8 +150,8 @@ quit:
dev_dbg(&dev->pdev->dev, "message read\n");
if (!buffer) {
mei_read_slots(dev, dev->rd_msg_buf, mei_hdr->length);
- dev_dbg(&dev->pdev->dev, "discarding message, header =%08x.\n",
- *(u32 *) dev->rd_msg_buf);
+ dev_dbg(&dev->pdev->dev, "discarding message " MEI_HDR_FMT "\n",
+ MEI_HDR_PRM(mei_hdr));
}
return 0;
@@ -742,8 +742,7 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots,
dev_dbg(&dev->pdev->dev, "buf: size = %d idx = %lu\n",
cb->request_buffer.size, cb->buf_idx);
- dev_dbg(&dev->pdev->dev, "msg: len = %d complete = %d\n",
- mei_hdr->length, mei_hdr->msg_complete);
+ dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
*slots -= msg_slots;
if (mei_write_message(dev, mei_hdr,
@@ -790,7 +789,7 @@ static int mei_irq_thread_read_handler(struct mei_cl_cb *cmpl_list,
dev_dbg(&dev->pdev->dev, "slots =%08x.\n", *slots);
}
mei_hdr = (struct mei_msg_hdr *) &dev->rd_msg_hdr;
- dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n", mei_hdr->length);
+ dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
if (mei_hdr->reserved || !dev->rd_msg_hdr) {
dev_dbg(&dev->pdev->dev, "corrupted message header.\n");
@@ -835,13 +834,12 @@ static int mei_irq_thread_read_handler(struct mei_cl_cb *cmpl_list,
(MEI_FILE_CONNECTED == dev->iamthif_cl.state) &&
(dev->iamthif_state == MEI_IAMTHIF_READING)) {
dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_iamthif_message.\n");
- dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n",
- mei_hdr->length);
+
+ dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
ret = mei_amthif_irq_read_message(cmpl_list, dev, mei_hdr);
if (ret)
goto end;
-
} else {
dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_client_message.\n");
ret = mei_irq_thread_read_client_message(cmpl_list,
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index b281c23..7751b58 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -552,8 +552,9 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
mei_hdr.host_addr = cl->host_client_id;
mei_hdr.me_addr = cl->me_client_id;
mei_hdr.reserved = 0;
- dev_dbg(&dev->pdev->dev, "call mei_write_message header=%08x.\n",
- *((u32 *) &mei_hdr));
+
+ dev_dbg(&dev->pdev->dev, "write " MEI_HDR_FMT "\n",
+ MEI_HDR_PRM(&mei_hdr));
if (mei_write_message(dev, &mei_hdr, write_cb->request_buffer.data)) {
rets = -ENODEV;
goto err;
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 25da045..da09805 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -506,4 +506,9 @@ static inline struct mei_msg_hdr *mei_hbm_hdr(u32 *buf, size_t length)
return hdr;
}
+#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d comp=%1d"
+#define MEI_HDR_PRM(hdr) \
+ (hdr)->host_addr, (hdr)->me_addr, \
+ (hdr)->length, (hdr)->msg_complete
+
#endif
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 03/15] mei: move internal host clients ids to mei_dev.h from hw.h
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 02/15] mei: use unified format for printing mei message header Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 04/15] mei: extarct device dependent constants into hw-mei.h Tomas Winkler
` (11 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
Internal clients numbers are implementation detail
and not hardware defined
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/hw.h | 5 -----
drivers/misc/mei/mei_dev.h | 6 ++++++
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index be8ca6b..7d47366 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -31,11 +31,6 @@
#define MEI_IAMTHIF_STALL_TIMER 12 /* HPS */
#define MEI_IAMTHIF_READ_TIMER 10 /* HPS */
-/*
- * Internal Clients Number
- */
-#define MEI_WD_HOST_CLIENT_ID 1
-#define MEI_IAMTHIF_HOST_CLIENT_ID 2
/*
* MEI device IDs
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index da09805..39cd289 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -72,6 +72,12 @@ extern const u8 mei_wd_state_independence_msg[3][4];
*/
#define MEI_MAX_OPEN_HANDLE_COUNT (MEI_CLIENTS_MAX - 3)
+/*
+ * Internal Clients Number
+ */
+#define MEI_WD_HOST_CLIENT_ID 1
+#define MEI_IAMTHIF_HOST_CLIENT_ID 2
+
/* File state */
enum file_state {
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 04/15] mei: extarct device dependent constants into hw-mei.h
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 02/15] mei: use unified format for printing mei message header Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 03/15] mei: move internal host clients ids to mei_dev.h from hw.h Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 05/15] mei: inlude local headers after the system ones Tomas Winkler
` (10 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/hw-mei.h | 118 ++++++++++++++++++++++++++++++++++++++++++++
drivers/misc/mei/hw.h | 98 ------------------------------------
drivers/misc/mei/mei_dev.h | 2 +
3 files changed, 120 insertions(+), 98 deletions(-)
create mode 100644 drivers/misc/mei/hw-mei.h
diff --git a/drivers/misc/mei/hw-mei.h b/drivers/misc/mei/hw-mei.h
new file mode 100644
index 0000000..ecc58f7
--- /dev/null
+++ b/drivers/misc/mei/hw-mei.h
@@ -0,0 +1,118 @@
+/*
+ *
+ * Intel Management Engine Interface (Intel MEI) Linux driver
+ * Copyright (c) 2003-2012, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ */
+
+#ifndef _MEI_HW_MEI_H_
+#define _MEI_HW_MEI_H_
+
+/*
+ * MEI device IDs
+ */
+#define MEI_DEV_ID_82946GZ 0x2974 /* 82946GZ/GL */
+#define MEI_DEV_ID_82G35 0x2984 /* 82G35 Express */
+#define MEI_DEV_ID_82Q965 0x2994 /* 82Q963/Q965 */
+#define MEI_DEV_ID_82G965 0x29A4 /* 82P965/G965 */
+
+#define MEI_DEV_ID_82GM965 0x2A04 /* Mobile PM965/GM965 */
+#define MEI_DEV_ID_82GME965 0x2A14 /* Mobile GME965/GLE960 */
+
+#define MEI_DEV_ID_ICH9_82Q35 0x29B4 /* 82Q35 Express */
+#define MEI_DEV_ID_ICH9_82G33 0x29C4 /* 82G33/G31/P35/P31 Express */
+#define MEI_DEV_ID_ICH9_82Q33 0x29D4 /* 82Q33 Express */
+#define MEI_DEV_ID_ICH9_82X38 0x29E4 /* 82X38/X48 Express */
+#define MEI_DEV_ID_ICH9_3200 0x29F4 /* 3200/3210 Server */
+
+#define MEI_DEV_ID_ICH9_6 0x28B4 /* Bearlake */
+#define MEI_DEV_ID_ICH9_7 0x28C4 /* Bearlake */
+#define MEI_DEV_ID_ICH9_8 0x28D4 /* Bearlake */
+#define MEI_DEV_ID_ICH9_9 0x28E4 /* Bearlake */
+#define MEI_DEV_ID_ICH9_10 0x28F4 /* Bearlake */
+
+#define MEI_DEV_ID_ICH9M_1 0x2A44 /* Cantiga */
+#define MEI_DEV_ID_ICH9M_2 0x2A54 /* Cantiga */
+#define MEI_DEV_ID_ICH9M_3 0x2A64 /* Cantiga */
+#define MEI_DEV_ID_ICH9M_4 0x2A74 /* Cantiga */
+
+#define MEI_DEV_ID_ICH10_1 0x2E04 /* Eaglelake */
+#define MEI_DEV_ID_ICH10_2 0x2E14 /* Eaglelake */
+#define MEI_DEV_ID_ICH10_3 0x2E24 /* Eaglelake */
+#define MEI_DEV_ID_ICH10_4 0x2E34 /* Eaglelake */
+
+#define MEI_DEV_ID_IBXPK_1 0x3B64 /* Calpella */
+#define MEI_DEV_ID_IBXPK_2 0x3B65 /* Calpella */
+
+#define MEI_DEV_ID_CPT_1 0x1C3A /* Couger Point */
+#define MEI_DEV_ID_PBG_1 0x1D3A /* C600/X79 Patsburg */
+
+#define MEI_DEV_ID_PPT_1 0x1E3A /* Panther Point */
+#define MEI_DEV_ID_PPT_2 0x1CBA /* Panther Point */
+#define MEI_DEV_ID_PPT_3 0x1DBA /* Panther Point */
+
+#define MEI_DEV_ID_LPT 0x8C3A /* Lynx Point */
+#define MEI_DEV_ID_LPT_LP 0x9C3A /* Lynx Point LP */
+/*
+ * MEI HW Section
+ */
+
+/* MEI registers */
+/* H_CB_WW - Host Circular Buffer (CB) Write Window register */
+#define H_CB_WW 0
+/* H_CSR - Host Control Status register */
+#define H_CSR 4
+/* ME_CB_RW - ME Circular Buffer Read Window register (read only) */
+#define ME_CB_RW 8
+/* ME_CSR_HA - ME Control Status Host Access register (read only) */
+#define ME_CSR_HA 0xC
+
+
+/* register bits of H_CSR (Host Control Status register) */
+/* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */
+#define H_CBD 0xFF000000
+/* Host Circular Buffer Write Pointer */
+#define H_CBWP 0x00FF0000
+/* Host Circular Buffer Read Pointer */
+#define H_CBRP 0x0000FF00
+/* Host Reset */
+#define H_RST 0x00000010
+/* Host Ready */
+#define H_RDY 0x00000008
+/* Host Interrupt Generate */
+#define H_IG 0x00000004
+/* Host Interrupt Status */
+#define H_IS 0x00000002
+/* Host Interrupt Enable */
+#define H_IE 0x00000001
+
+
+/* register bits of ME_CSR_HA (ME Control Status Host Access register) */
+/* ME CB (Circular Buffer) Depth HRA (Host Read Access) - host read only
+access to ME_CBD */
+#define ME_CBD_HRA 0xFF000000
+/* ME CB Write Pointer HRA - host read only access to ME_CBWP */
+#define ME_CBWP_HRA 0x00FF0000
+/* ME CB Read Pointer HRA - host read only access to ME_CBRP */
+#define ME_CBRP_HRA 0x0000FF00
+/* ME Reset HRA - host read only access to ME_RST */
+#define ME_RST_HRA 0x00000010
+/* ME Ready HRA - host read only access to ME_RDY */
+#define ME_RDY_HRA 0x00000008
+/* ME Interrupt Generate HRA - host read only access to ME_IG */
+#define ME_IG_HRA 0x00000004
+/* ME Interrupt Status HRA - host read only access to ME_IS */
+#define ME_IS_HRA 0x00000002
+/* ME Interrupt Enable HRA - host read only access to ME_IE */
+#define ME_IE_HRA 0x00000001
+
+#endif /* _MEI_HW_MEI_H_ */
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index 7d47366..ba7d06c 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -33,104 +33,6 @@
/*
- * MEI device IDs
- */
-#define MEI_DEV_ID_82946GZ 0x2974 /* 82946GZ/GL */
-#define MEI_DEV_ID_82G35 0x2984 /* 82G35 Express */
-#define MEI_DEV_ID_82Q965 0x2994 /* 82Q963/Q965 */
-#define MEI_DEV_ID_82G965 0x29A4 /* 82P965/G965 */
-
-#define MEI_DEV_ID_82GM965 0x2A04 /* Mobile PM965/GM965 */
-#define MEI_DEV_ID_82GME965 0x2A14 /* Mobile GME965/GLE960 */
-
-#define MEI_DEV_ID_ICH9_82Q35 0x29B4 /* 82Q35 Express */
-#define MEI_DEV_ID_ICH9_82G33 0x29C4 /* 82G33/G31/P35/P31 Express */
-#define MEI_DEV_ID_ICH9_82Q33 0x29D4 /* 82Q33 Express */
-#define MEI_DEV_ID_ICH9_82X38 0x29E4 /* 82X38/X48 Express */
-#define MEI_DEV_ID_ICH9_3200 0x29F4 /* 3200/3210 Server */
-
-#define MEI_DEV_ID_ICH9_6 0x28B4 /* Bearlake */
-#define MEI_DEV_ID_ICH9_7 0x28C4 /* Bearlake */
-#define MEI_DEV_ID_ICH9_8 0x28D4 /* Bearlake */
-#define MEI_DEV_ID_ICH9_9 0x28E4 /* Bearlake */
-#define MEI_DEV_ID_ICH9_10 0x28F4 /* Bearlake */
-
-#define MEI_DEV_ID_ICH9M_1 0x2A44 /* Cantiga */
-#define MEI_DEV_ID_ICH9M_2 0x2A54 /* Cantiga */
-#define MEI_DEV_ID_ICH9M_3 0x2A64 /* Cantiga */
-#define MEI_DEV_ID_ICH9M_4 0x2A74 /* Cantiga */
-
-#define MEI_DEV_ID_ICH10_1 0x2E04 /* Eaglelake */
-#define MEI_DEV_ID_ICH10_2 0x2E14 /* Eaglelake */
-#define MEI_DEV_ID_ICH10_3 0x2E24 /* Eaglelake */
-#define MEI_DEV_ID_ICH10_4 0x2E34 /* Eaglelake */
-
-#define MEI_DEV_ID_IBXPK_1 0x3B64 /* Calpella */
-#define MEI_DEV_ID_IBXPK_2 0x3B65 /* Calpella */
-
-#define MEI_DEV_ID_CPT_1 0x1C3A /* Couger Point */
-#define MEI_DEV_ID_PBG_1 0x1D3A /* C600/X79 Patsburg */
-
-#define MEI_DEV_ID_PPT_1 0x1E3A /* Panther Point */
-#define MEI_DEV_ID_PPT_2 0x1CBA /* Panther Point */
-#define MEI_DEV_ID_PPT_3 0x1DBA /* Panther Point */
-
-#define MEI_DEV_ID_LPT 0x8C3A /* Lynx Point */
-#define MEI_DEV_ID_LPT_LP 0x9C3A /* Lynx Point LP */
-/*
- * MEI HW Section
- */
-
-/* MEI registers */
-/* H_CB_WW - Host Circular Buffer (CB) Write Window register */
-#define H_CB_WW 0
-/* H_CSR - Host Control Status register */
-#define H_CSR 4
-/* ME_CB_RW - ME Circular Buffer Read Window register (read only) */
-#define ME_CB_RW 8
-/* ME_CSR_HA - ME Control Status Host Access register (read only) */
-#define ME_CSR_HA 0xC
-
-
-/* register bits of H_CSR (Host Control Status register) */
-/* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */
-#define H_CBD 0xFF000000
-/* Host Circular Buffer Write Pointer */
-#define H_CBWP 0x00FF0000
-/* Host Circular Buffer Read Pointer */
-#define H_CBRP 0x0000FF00
-/* Host Reset */
-#define H_RST 0x00000010
-/* Host Ready */
-#define H_RDY 0x00000008
-/* Host Interrupt Generate */
-#define H_IG 0x00000004
-/* Host Interrupt Status */
-#define H_IS 0x00000002
-/* Host Interrupt Enable */
-#define H_IE 0x00000001
-
-
-/* register bits of ME_CSR_HA (ME Control Status Host Access register) */
-/* ME CB (Circular Buffer) Depth HRA (Host Read Access) - host read only
-access to ME_CBD */
-#define ME_CBD_HRA 0xFF000000
-/* ME CB Write Pointer HRA - host read only access to ME_CBWP */
-#define ME_CBWP_HRA 0x00FF0000
-/* ME CB Read Pointer HRA - host read only access to ME_CBRP */
-#define ME_CBRP_HRA 0x0000FF00
-/* ME Reset HRA - host read only access to ME_RST */
-#define ME_RST_HRA 0x00000010
-/* ME Ready HRA - host read only access to ME_RDY */
-#define ME_RDY_HRA 0x00000008
-/* ME Interrupt Generate HRA - host read only access to ME_IG */
-#define ME_IG_HRA 0x00000004
-/* ME Interrupt Status HRA - host read only access to ME_IS */
-#define ME_IS_HRA 0x00000002
-/* ME Interrupt Enable HRA - host read only access to ME_IE */
-#define ME_IE_HRA 0x00000001
-
-/*
* MEI Version
*/
#define HBM_MINOR_VERSION 0
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 39cd289..ddc23f5 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -21,7 +21,9 @@
#include <linux/watchdog.h>
#include <linux/poll.h>
#include <linux/mei.h>
+
#include "hw.h"
+#include "hw-mei.h"
/*
* watch dog definition
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 05/15] mei: inlude local headers after the system ones
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (2 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 04/15] mei: extarct device dependent constants into hw-mei.h Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 06/15] mei: kill not used BAR0 length and base variables Tomas Winkler
` (9 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
first include linux/mei.h then only local headers
to avoid possible false dependencies
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/amthif.c | 3 +--
drivers/misc/mei/init.c | 4 ++--
drivers/misc/mei/interface.c | 3 ++-
drivers/misc/mei/interrupt.c | 4 ++--
drivers/misc/mei/iorw.c | 4 ++--
drivers/misc/mei/main.c | 3 ++-
drivers/misc/mei/wd.c | 4 ++--
7 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index 77acd23..bb613f7 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -31,10 +31,9 @@
#include <linux/jiffies.h>
#include <linux/uaccess.h>
+#include <linux/mei.h>
#include "mei_dev.h"
-#include "hw.h"
-#include <linux/mei.h>
#include "interface.h"
const uuid_le mei_amthi_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, 0xac,
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index c0c0b3e..08884ef 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -19,10 +19,10 @@
#include <linux/wait.h>
#include <linux/delay.h>
+#include <linux/mei.h>
+
#include "mei_dev.h"
-#include "hw.h"
#include "interface.h"
-#include <linux/mei.h>
const char *mei_dev_state_str(int state)
{
diff --git a/drivers/misc/mei/interface.c b/drivers/misc/mei/interface.c
index 17d93f7..810431e 100644
--- a/drivers/misc/mei/interface.c
+++ b/drivers/misc/mei/interface.c
@@ -15,8 +15,9 @@
*/
#include <linux/pci.h>
-#include "mei_dev.h"
#include <linux/mei.h>
+
+#include "mei_dev.h"
#include "interface.h"
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index fe93d1c..0a020ad 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -21,9 +21,9 @@
#include <linux/fs.h>
#include <linux/jiffies.h>
-#include "mei_dev.h"
#include <linux/mei.h>
-#include "hw.h"
+
+#include "mei_dev.h"
#include "interface.h"
diff --git a/drivers/misc/mei/iorw.c b/drivers/misc/mei/iorw.c
index eb93a1b..7ccc3d8 100644
--- a/drivers/misc/mei/iorw.c
+++ b/drivers/misc/mei/iorw.c
@@ -33,9 +33,9 @@
#include <linux/uaccess.h>
-#include "mei_dev.h"
-#include "hw.h"
#include <linux/mei.h>
+
+#include "mei_dev.h"
#include "interface.h"
/**
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index 7751b58..da94260 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -37,8 +37,9 @@
#include <linux/interrupt.h>
#include <linux/miscdevice.h>
-#include "mei_dev.h"
#include <linux/mei.h>
+
+#include "mei_dev.h"
#include "interface.h"
/* AMT device is a singleton on the platform */
diff --git a/drivers/misc/mei/wd.c b/drivers/misc/mei/wd.c
index fe19945..9a5c782 100644
--- a/drivers/misc/mei/wd.c
+++ b/drivers/misc/mei/wd.c
@@ -21,10 +21,10 @@
#include <linux/sched.h>
#include <linux/watchdog.h>
+#include <linux/mei.h>
+
#include "mei_dev.h"
-#include "hw.h"
#include "interface.h"
-#include <linux/mei.h>
static const u8 mei_start_wd_params[] = { 0x02, 0x12, 0x13, 0x10 };
static const u8 mei_stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10 };
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 06/15] mei: kill not used BAR0 length and base variables
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (3 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 05/15] mei: inlude local headers after the system ones Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers Tomas Winkler
` (8 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
1. mem_base and mem_lenght are not used so we can delete
them
2. add kdoc for mem_addr member of mei_device
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/mei_dev.h | 7 ++-----
1 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index ddc23f5..92a5d9a 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -201,6 +201,7 @@ struct mei_cl {
/**
* struct mei_device - MEI private device struct
+ * @mem_addr - mem mapped base register address
* @hbuf_depth - depth of host(write) buffer
* @wr_ext_msg - buffer for hbm control responses (set in read cycle)
*/
@@ -221,11 +222,7 @@ struct mei_device {
*/
struct list_head file_list;
long open_handle_count;
- /*
- * memory of device
- */
- unsigned int mem_base;
- unsigned int mem_length;
+
void __iomem *mem_addr;
/*
* lock for the device
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (4 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 06/15] mei: kill not used BAR0 length and base variables Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:31 ` Alan Cox
2012-12-04 14:04 ` [char-misc-next 08/15] mei: mei_me_client is not hw API move to mei_dev.h Tomas Winkler
` (7 subsequent siblings)
13 siblings, 1 reply; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
on intel registers are alwasy memory mapped so drop
the overhead of iowrite32 and ioread32
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/mei_dev.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 92a5d9a..37eb041 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -438,7 +438,7 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots);
static inline u32 mei_reg_read(const struct mei_device *dev,
unsigned long offset)
{
- return ioread32(dev->mem_addr + offset);
+ return readl(dev->mem_addr + offset);
}
/**
@@ -451,7 +451,7 @@ static inline u32 mei_reg_read(const struct mei_device *dev,
static inline void mei_reg_write(const struct mei_device *dev,
unsigned long offset, u32 value)
{
- iowrite32(value, dev->mem_addr + offset);
+ writel(value, dev->mem_addr + offset);
}
/**
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* Re: [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers
2012-12-04 14:04 ` [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers Tomas Winkler
@ 2012-12-04 14:31 ` Alan Cox
2012-12-04 15:28 ` Winkler, Tomas
0 siblings, 1 reply; 20+ messages in thread
From: Alan Cox @ 2012-12-04 14:31 UTC (permalink / raw)
To: Tomas Winkler; +Cc: gregkh, arnd, alan, linux-kernel
On Tue, 4 Dec 2012 16:04:36 +0200
Tomas Winkler <tomas.winkler@intel.com> wrote:
> on intel registers are alwasy memory mapped so drop
> the overhead of iowrite32 and ioread32
>
> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
> ---
> drivers/misc/mei/mei_dev.h | 4 ++--
> 1 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
> index 92a5d9a..37eb041 100644
> --- a/drivers/misc/mei/mei_dev.h
> +++ b/drivers/misc/mei/mei_dev.h
> @@ -438,7 +438,7 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots);
> static inline u32 mei_reg_read(const struct mei_device *dev,
> unsigned long offset)
> {
> - return ioread32(dev->mem_addr + offset);
> + return readl(dev->mem_addr + offset);
> }
>
> /**
> @@ -451,7 +451,7 @@ static inline u32 mei_reg_read(const struct mei_device *dev,
> static inline void mei_reg_write(const struct mei_device *dev,
> unsigned long offset, u32 value)
> {
> - iowrite32(value, dev->mem_addr + offset);
> + writel(value, dev->mem_addr + offset);
ioremap should match readl/writel
iomap iowrite32/ioread32
so you need to tweak the map/unmap if you do this.
As to overhead. I'd love to see a measurement that can detect the
difference. Do you have a benchmark that shows it ?
^ permalink raw reply [flat|nested] 20+ messages in thread* RE: [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers
2012-12-04 14:31 ` Alan Cox
@ 2012-12-04 15:28 ` Winkler, Tomas
2012-12-04 15:37 ` Alan Cox
0 siblings, 1 reply; 20+ messages in thread
From: Winkler, Tomas @ 2012-12-04 15:28 UTC (permalink / raw)
To: Alan Cox
Cc: gregkh@linuxfoundation.org, arnd@arndb.de, alan@linux.intel.com,
linux-kernel@vger.kernel.org, Stanislaw Gruszka
> >
> > /**
> > @@ -451,7 +451,7 @@ static inline u32 mei_reg_read(const struct
> > mei_device *dev, static inline void mei_reg_write(const struct mei_device
> *dev,
> > unsigned long offset, u32 value) {
> > - iowrite32(value, dev->mem_addr + offset);
> > + writel(value, dev->mem_addr + offset);
>
> ioremap should match readl/writel
> iomap iowrite32/ioread32
Thanks, I can replace pci_iomap with pci_ioremap_bar although in low level it is doing just the same.
> so you need to tweak the map/unmap if you do this.
>
> As to overhead. I'd love to see a measurement that can detect the
> difference. Do you have a benchmark that shows it ?
Don't have any numbers but it seems reasonable to me.
I did following this example
commit 05f5b97ee0013fefbd9139cf8c3eda5f2a88c04a
Author: Stanislaw Gruszka <sgruszka@redhat.com>
Date: Wed Mar 7 09:52:26 2012 -0800
iwlwifi: use writeb,writel,readl directly
That change will save us some CPU cycles at run time. Having port-based
I/O seems to be not possible for PCIe devices.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Thanks
Tomas
^ permalink raw reply [flat|nested] 20+ messages in thread* Re: [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers
2012-12-04 15:28 ` Winkler, Tomas
@ 2012-12-04 15:37 ` Alan Cox
2012-12-04 16:02 ` Winkler, Tomas
0 siblings, 1 reply; 20+ messages in thread
From: Alan Cox @ 2012-12-04 15:37 UTC (permalink / raw)
To: Winkler, Tomas
Cc: Alan Cox, gregkh@linuxfoundation.org, arnd@arndb.de,
linux-kernel@vger.kernel.org, Stanislaw Gruszka
> > so you need to tweak the map/unmap if you do this.
> >
> > As to overhead. I'd love to see a measurement that can detect the
> > difference. Do you have a benchmark that shows it ?
>
> Don't have any numbers but it seems reasonable to me.
Processors are pretty good at prediction these days. I've not seen any
evidence to support the assumption.
^ permalink raw reply [flat|nested] 20+ messages in thread
* RE: [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers
2012-12-04 15:37 ` Alan Cox
@ 2012-12-04 16:02 ` Winkler, Tomas
2012-12-04 16:06 ` Alan Cox
0 siblings, 1 reply; 20+ messages in thread
From: Winkler, Tomas @ 2012-12-04 16:02 UTC (permalink / raw)
To: Alan Cox, gregkh@linuxfoundation.org
Cc: Alan Cox, arnd@arndb.de, linux-kernel@vger.kernel.org,
Stanislaw Gruszka
> > > As to overhead. I'd love to see a measurement that can detect the
> > > difference. Do you have a benchmark that shows it ?
> >
> > Don't have any numbers but it seems reasonable to me.
>
> Processors are pretty good at prediction these days. I've not seen any
> evidence to support the assumption.
I don't have strong opinion about it, yet what would be benefit of keeping the io abstraction layer,
In case we are sure it is not used with io ports?
Anyhow If time permits I will try to run the stress again.
Greg, can you pleased just drop this patch for now, I don't believe it creates any conflict.
Thanks
Tomas
^ permalink raw reply [flat|nested] 20+ messages in thread
* Re: [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers
2012-12-04 16:02 ` Winkler, Tomas
@ 2012-12-04 16:06 ` Alan Cox
0 siblings, 0 replies; 20+ messages in thread
From: Alan Cox @ 2012-12-04 16:06 UTC (permalink / raw)
To: Winkler, Tomas
Cc: gregkh@linuxfoundation.org, Alan Cox, arnd@arndb.de,
linux-kernel@vger.kernel.org, Stanislaw Gruszka
On Tue, 4 Dec 2012 16:02:17 +0000
"Winkler, Tomas" <tomas.winkler@intel.com> wrote:
> > > > As to overhead. I'd love to see a measurement that can detect
> > > > the difference. Do you have a benchmark that shows it ?
> > >
> > > Don't have any numbers but it seems reasonable to me.
> >
> > Processors are pretty good at prediction these days. I've not seen
> > any evidence to support the assumption.
>
> I don't have strong opinion about it, yet what would be benefit of
> keeping the io abstraction layer, In case we are sure it is not used
> with io ports?
Less changes to existing working code being the obvious one.
Alan
^ permalink raw reply [flat|nested] 20+ messages in thread
* [char-misc-next 08/15] mei: mei_me_client is not hw API move to mei_dev.h
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (5 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 07/15] mei: use wrietl/readl instead of io wrappers Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 09/15] mei: move hw dependent constructs to interface.c Tomas Winkler
` (6 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
Remove struct mei_me_client from hw.h as it is not
part of of the hardware API. Also it doesn't have to
be packed
Add kdoc for this structure
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/hw.h | 6 ------
drivers/misc/mei/mei_dev.h | 13 +++++++++++++
2 files changed, 13 insertions(+), 6 deletions(-)
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index ba7d06c..6ebb369 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -230,11 +230,5 @@ struct hbm_flow_control {
u8 reserved[MEI_FC_MESSAGE_RESERVED_LENGTH];
} __packed;
-struct mei_me_client {
- struct mei_client_properties props;
- u8 client_id;
- u8 mei_flow_ctrl_creds;
-} __packed;
-
#endif
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 37eb041..ab085d1 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -158,6 +158,19 @@ struct mei_message_data {
unsigned char *data;
};
+/**
+ * struct mei_me_client - representation of me (fw) client
+ *
+ * @props - client properties
+ * @client_id - me client id
+ * @mei_flow_ctrl_creds - flow control credits
+ */
+struct mei_me_client {
+ struct mei_client_properties props;
+ u8 client_id;
+ u8 mei_flow_ctrl_creds;
+};
+
struct mei_cl;
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 09/15] mei: move hw dependent constructs to interface.c
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (6 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 08/15] mei: mei_me_client is not hw API move to mei_dev.h Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 10/15] mei: move host bus message handling to hbm.c Tomas Winkler
` (5 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/init.c | 3 +-
drivers/misc/mei/interface.c | 92 +++++++++++++++++++++++++++++++++++++++++-
drivers/misc/mei/interrupt.c | 24 +----------
drivers/misc/mei/mei_dev.h | 71 ++------------------------------
4 files changed, 97 insertions(+), 93 deletions(-)
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 08884ef..eb18055 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -142,8 +142,7 @@ int mei_hw_init(struct mei_device *dev)
dev->host_hw_state, dev->me_hw_state);
/* acknowledge interrupt and stop interupts */
- if ((dev->host_hw_state & H_IS) == H_IS)
- mei_reg_write(dev, H_CSR, dev->host_hw_state);
+ mei_clear_interrupts(dev);
/* Doesn't change in runtime */
dev->hbuf_depth = (dev->host_hw_state & H_CBD) >> 24;
diff --git a/drivers/misc/mei/interface.c b/drivers/misc/mei/interface.c
index 810431e..c2faeb1 100644
--- a/drivers/misc/mei/interface.c
+++ b/drivers/misc/mei/interface.c
@@ -20,7 +20,61 @@
#include "mei_dev.h"
#include "interface.h"
+/**
+ * mei_reg_read - Reads 32bit data from the mei device
+ *
+ * @dev: the device structure
+ * @offset: offset from which to read the data
+ *
+ * returns register value (u32)
+ */
+static inline u32 mei_reg_read(const struct mei_device *dev,
+ unsigned long offset)
+{
+ return readl(dev->mem_addr + offset);
+}
+
+
+/**
+ * mei_reg_write - Writes 32bit data to the mei device
+ *
+ * @dev: the device structure
+ * @offset: offset from which to write the data
+ * @value: register value to write (u32)
+ */
+static inline void mei_reg_write(const struct mei_device *dev,
+ unsigned long offset, u32 value)
+{
+ writel(value, dev->mem_addr + offset);
+}
+/**
+ * mei_hcsr_read - Reads 32bit data from the host CSR
+ *
+ * @dev: the device structure
+ *
+ * returns the byte read.
+ */
+u32 mei_hcsr_read(const struct mei_device *dev)
+{
+ return mei_reg_read(dev, H_CSR);
+}
+
+u32 mei_mecbrw_read(const struct mei_device *dev)
+{
+ return mei_reg_read(dev, ME_CB_RW);
+}
+/**
+ * mei_mecsr_read - Reads 32bit data from the ME CSR
+ *
+ * @dev: the device structure
+ *
+ * returns ME_CSR_HA register value (u32)
+ */
+u32 mei_mecsr_read(const struct mei_device *dev)
+{
+ return mei_reg_read(dev, ME_CSR_HA);
+}
/**
* mei_set_csr_register - writes H_CSR register to the mei device,
@@ -37,7 +91,18 @@ void mei_hcsr_set(struct mei_device *dev)
}
/**
- * mei_csr_enable_interrupts - enables mei device interrupts
+ * mei_enable_interrupts - clear and stop interrupts
+ *
+ * @dev: the device structure
+ */
+void mei_clear_interrupts(struct mei_device *dev)
+{
+ if ((dev->host_hw_state & H_IS) == H_IS)
+ mei_reg_write(dev, H_CSR, dev->host_hw_state);
+}
+
+/**
+ * mei_enable_interrupts - enables mei device interrupts
*
* @dev: the device structure
*/
@@ -48,7 +113,7 @@ void mei_enable_interrupts(struct mei_device *dev)
}
/**
- * mei_csr_disable_interrupts - disables mei device interrupts
+ * mei_disable_interrupts - disables mei device interrupts
*
* @dev: the device structure
*/
@@ -58,6 +123,29 @@ void mei_disable_interrupts(struct mei_device *dev)
mei_hcsr_set(dev);
}
+
+/**
+ * mei_interrupt_quick_handler - The ISR of the MEI device
+ *
+ * @irq: The irq number
+ * @dev_id: pointer to the device structure
+ *
+ * returns irqreturn_t
+ */
+irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id)
+{
+ struct mei_device *dev = (struct mei_device *) dev_id;
+ u32 csr_reg = mei_hcsr_read(dev);
+
+ if ((csr_reg & H_IS) != H_IS)
+ return IRQ_NONE;
+
+ /* clear H_IS bit in H_CSR */
+ mei_reg_write(dev, H_CSR, csr_reg);
+
+ return IRQ_WAKE_THREAD;
+}
+
/**
* mei_hbuf_filled_slots - gets number of device filled buffer slots
*
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 0a020ad..cd89b68 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -28,28 +28,6 @@
/**
- * mei_interrupt_quick_handler - The ISR of the MEI device
- *
- * @irq: The irq number
- * @dev_id: pointer to the device structure
- *
- * returns irqreturn_t
- */
-irqreturn_t mei_interrupt_quick_handler(int irq, void *dev_id)
-{
- struct mei_device *dev = (struct mei_device *) dev_id;
- u32 csr_reg = mei_hcsr_read(dev);
-
- if ((csr_reg & H_IS) != H_IS)
- return IRQ_NONE;
-
- /* clear H_IS bit in H_CSR */
- mei_reg_write(dev, H_CSR, csr_reg);
-
- return IRQ_WAKE_THREAD;
-}
-
-/**
* _mei_cmpl - processes completed operation.
*
* @cl: private data of the file object.
@@ -1150,7 +1128,7 @@ irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id)
/* Ack the interrupt here
* In case of MSI we don't go through the quick handler */
if (pci_dev_msi_enabled(dev->pdev))
- mei_reg_write(dev, H_CSR, dev->host_hw_state);
+ mei_clear_interrupts(dev);
dev->me_hw_state = mei_mecsr_read(dev);
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index ab085d1..38693c5 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -440,79 +440,18 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots);
* Register Access Function
*/
-/**
- * mei_reg_read - Reads 32bit data from the mei device
- *
- * @dev: the device structure
- * @offset: offset from which to read the data
- *
- * returns register value (u32)
- */
-static inline u32 mei_reg_read(const struct mei_device *dev,
- unsigned long offset)
-{
- return readl(dev->mem_addr + offset);
-}
-
-/**
- * mei_reg_write - Writes 32bit data to the mei device
- *
- * @dev: the device structure
- * @offset: offset from which to write the data
- * @value: register value to write (u32)
- */
-static inline void mei_reg_write(const struct mei_device *dev,
- unsigned long offset, u32 value)
-{
- writel(value, dev->mem_addr + offset);
-}
-
-/**
- * mei_hcsr_read - Reads 32bit data from the host CSR
- *
- * @dev: the device structure
- *
- * returns the byte read.
- */
-static inline u32 mei_hcsr_read(const struct mei_device *dev)
-{
- return mei_reg_read(dev, H_CSR);
-}
+u32 mei_hcsr_read(const struct mei_device *dev);
+u32 mei_mecsr_read(const struct mei_device *dev);
+u32 mei_mecbrw_read(const struct mei_device *dev);
-/**
- * mei_mecsr_read - Reads 32bit data from the ME CSR
- *
- * @dev: the device structure
- *
- * returns ME_CSR_HA register value (u32)
- */
-static inline u32 mei_mecsr_read(const struct mei_device *dev)
-{
- return mei_reg_read(dev, ME_CSR_HA);
-}
-
-/**
- * get_me_cb_rw - Reads 32bit data from the mei ME_CB_RW register
- *
- * @dev: the device structure
- *
- * returns ME_CB_RW register value (u32)
- */
-static inline u32 mei_mecbrw_read(const struct mei_device *dev)
-{
- return mei_reg_read(dev, ME_CB_RW);
-}
-
-
-/*
- * mei interface function prototypes
- */
void mei_hcsr_set(struct mei_device *dev);
void mei_csr_clear_his(struct mei_device *dev);
+void mei_clear_interrupts(struct mei_device *dev);
void mei_enable_interrupts(struct mei_device *dev);
void mei_disable_interrupts(struct mei_device *dev);
+
static inline struct mei_msg_hdr *mei_hbm_hdr(u32 *buf, size_t length)
{
struct mei_msg_hdr *hdr = (struct mei_msg_hdr *)buf;
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 10/15] mei: move host bus message handling to hbm.c
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (7 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 09/15] mei: move hw dependent constructs to interface.c Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 11/15] mei: drop non existent function prototype Tomas Winkler
` (4 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
for sake of more layered desing we move
to the new hbm.c file
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/Makefile | 1 +
drivers/misc/mei/hbm.c | 440 ++++++++++++++++++++++++++++++++++++++++++
drivers/misc/mei/init.c | 111 -----------
drivers/misc/mei/interface.c | 78 --------
drivers/misc/mei/interrupt.c | 235 +----------------------
drivers/misc/mei/mei_dev.h | 10 +
6 files changed, 456 insertions(+), 419 deletions(-)
create mode 100644 drivers/misc/mei/hbm.c
diff --git a/drivers/misc/mei/Makefile b/drivers/misc/mei/Makefile
index 0017842..1f382a5 100644
--- a/drivers/misc/mei/Makefile
+++ b/drivers/misc/mei/Makefile
@@ -4,6 +4,7 @@
#
obj-$(CONFIG_INTEL_MEI) += mei.o
mei-objs := init.o
+mei-objs += hbm.o
mei-objs += interrupt.o
mei-objs += interface.o
mei-objs += iorw.o
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
new file mode 100644
index 0000000..2c4c1bb
--- /dev/null
+++ b/drivers/misc/mei/hbm.c
@@ -0,0 +1,440 @@
+/*
+ *
+ * Intel Management Engine Interface (Intel MEI) Linux driver
+ * Copyright (c) 2003-2012, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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.
+ *
+ */
+
+#include <linux/pci.h>
+#include <linux/sched.h>
+#include <linux/wait.h>
+#include <linux/mei.h>
+
+#include "mei_dev.h"
+#include "interface.h"
+
+/**
+ * host_start_message - mei host sends start message.
+ *
+ * @dev: the device structure
+ *
+ * returns none.
+ */
+void mei_host_start_message(struct mei_device *dev)
+{
+ struct mei_msg_hdr *mei_hdr;
+ struct hbm_host_version_request *start_req;
+ const size_t len = sizeof(struct hbm_host_version_request);
+
+ mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+
+ /* host start message */
+ start_req = (struct hbm_host_version_request *)&dev->wr_msg_buf[1];
+ memset(start_req, 0, len);
+ start_req->hbm_cmd = HOST_START_REQ_CMD;
+ start_req->host_version.major_version = HBM_MAJOR_VERSION;
+ start_req->host_version.minor_version = HBM_MINOR_VERSION;
+
+ dev->recvd_msg = false;
+ if (mei_write_message(dev, mei_hdr, (unsigned char *)start_req)) {
+ dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n");
+ dev->dev_state = MEI_DEV_RESETING;
+ mei_reset(dev, 1);
+ }
+ dev->init_clients_state = MEI_START_MESSAGE;
+ dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ return ;
+}
+
+/**
+ * host_enum_clients_message - host sends enumeration client request message.
+ *
+ * @dev: the device structure
+ *
+ * returns none.
+ */
+void mei_host_enum_clients_message(struct mei_device *dev)
+{
+ struct mei_msg_hdr *mei_hdr;
+ struct hbm_host_enum_request *enum_req;
+ const size_t len = sizeof(struct hbm_host_enum_request);
+ /* enumerate clients */
+ mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+
+ enum_req = (struct hbm_host_enum_request *) &dev->wr_msg_buf[1];
+ memset(enum_req, 0, sizeof(struct hbm_host_enum_request));
+ enum_req->hbm_cmd = HOST_ENUM_REQ_CMD;
+
+ if (mei_write_message(dev, mei_hdr, (unsigned char *)enum_req)) {
+ dev->dev_state = MEI_DEV_RESETING;
+ dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n");
+ mei_reset(dev, 1);
+ }
+ dev->init_clients_state = MEI_ENUM_CLIENTS_MESSAGE;
+ dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ return;
+}
+
+
+int mei_host_client_enumerate(struct mei_device *dev)
+{
+
+ struct mei_msg_hdr *mei_hdr;
+ struct hbm_props_request *prop_req;
+ const size_t len = sizeof(struct hbm_props_request);
+ unsigned long next_client_index;
+ u8 client_num;
+
+
+ client_num = dev->me_client_presentation_num;
+
+ next_client_index = find_next_bit(dev->me_clients_map, MEI_CLIENTS_MAX,
+ dev->me_client_index);
+
+ /* We got all client properties */
+ if (next_client_index == MEI_CLIENTS_MAX) {
+ schedule_work(&dev->init_work);
+
+ return 0;
+ }
+
+ dev->me_clients[client_num].client_id = next_client_index;
+ dev->me_clients[client_num].mei_flow_ctrl_creds = 0;
+
+ mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+ prop_req = (struct hbm_props_request *)&dev->wr_msg_buf[1];
+
+ memset(prop_req, 0, sizeof(struct hbm_props_request));
+
+
+ prop_req->hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD;
+ prop_req->address = next_client_index;
+
+ if (mei_write_message(dev, mei_hdr, (unsigned char *) prop_req)) {
+ dev->dev_state = MEI_DEV_RESETING;
+ dev_err(&dev->pdev->dev, "Properties request command failed\n");
+ mei_reset(dev, 1);
+
+ return -EIO;
+ }
+
+ dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
+ dev->me_client_index = next_client_index;
+
+ return 0;
+}
+
+/**
+ * mei_send_flow_control - sends flow control to fw.
+ *
+ * @dev: the device structure
+ * @cl: private data of the file object
+ *
+ * This function returns -EIO on write failure
+ */
+int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl)
+{
+ struct mei_msg_hdr *mei_hdr;
+ struct hbm_flow_control *flow_ctrl;
+ const size_t len = sizeof(struct hbm_flow_control);
+
+ mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+
+ flow_ctrl = (struct hbm_flow_control *)&dev->wr_msg_buf[1];
+ memset(flow_ctrl, 0, len);
+ flow_ctrl->hbm_cmd = MEI_FLOW_CONTROL_CMD;
+ flow_ctrl->host_addr = cl->host_client_id;
+ flow_ctrl->me_addr = cl->me_client_id;
+ /* FIXME: reserved !? */
+ memset(flow_ctrl->reserved, 0, sizeof(flow_ctrl->reserved));
+ dev_dbg(&dev->pdev->dev, "sending flow control host client = %d, ME client = %d\n",
+ cl->host_client_id, cl->me_client_id);
+
+ return mei_write_message(dev, mei_hdr, (unsigned char *) flow_ctrl);
+}
+
+/**
+ * mei_disconnect - sends disconnect message to fw.
+ *
+ * @dev: the device structure
+ * @cl: private data of the file object
+ *
+ * This function returns -EIO on write failure
+ */
+int mei_disconnect(struct mei_device *dev, struct mei_cl *cl)
+{
+ struct mei_msg_hdr *hdr;
+ struct hbm_client_connect_request *req;
+ const size_t len = sizeof(struct hbm_client_connect_request);
+
+ hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+
+ req = (struct hbm_client_connect_request *)&dev->wr_msg_buf[1];
+ memset(req, 0, len);
+ req->hbm_cmd = CLIENT_DISCONNECT_REQ_CMD;
+ req->host_addr = cl->host_client_id;
+ req->me_addr = cl->me_client_id;
+ req->reserved = 0;
+
+ return mei_write_message(dev, hdr, (unsigned char *)req);
+}
+
+/**
+ * mei_connect - sends connect message to fw.
+ *
+ * @dev: the device structure
+ * @cl: private data of the file object
+ *
+ * This function returns -EIO on write failure
+ */
+int mei_connect(struct mei_device *dev, struct mei_cl *cl)
+{
+ struct mei_msg_hdr *hdr;
+ struct hbm_client_connect_request *req;
+ const size_t len = sizeof(struct hbm_client_connect_request);
+
+ hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+
+ req = (struct hbm_client_connect_request *) &dev->wr_msg_buf[1];
+ req->hbm_cmd = CLIENT_CONNECT_REQ_CMD;
+ req->host_addr = cl->host_client_id;
+ req->me_addr = cl->me_client_id;
+ req->reserved = 0;
+
+ return mei_write_message(dev, hdr, (unsigned char *) req);
+}
+
+/**
+ * same_disconn_addr - tells if they have the same address
+ *
+ * @file: private data of the file object.
+ * @disconn: disconnection request.
+ *
+ * returns !=0, same; 0,not.
+ */
+static int same_disconn_addr(struct mei_cl *cl,
+ struct hbm_client_connect_request *req)
+{
+ return (cl->host_client_id == req->host_addr &&
+ cl->me_client_id == req->me_addr);
+}
+
+/**
+ * mei_client_disconnect_request - disconnects from request irq routine
+ *
+ * @dev: the device structure.
+ * @disconnect_req: disconnect request bus message.
+ */
+static void mei_client_disconnect_request(struct mei_device *dev,
+ struct hbm_client_connect_request *disconnect_req)
+{
+ struct hbm_client_connect_response *disconnect_res;
+ struct mei_cl *pos, *next;
+ const size_t len = sizeof(struct hbm_client_connect_response);
+
+ list_for_each_entry_safe(pos, next, &dev->file_list, link) {
+ if (same_disconn_addr(pos, disconnect_req)) {
+ dev_dbg(&dev->pdev->dev, "disconnect request host client %d ME client %d.\n",
+ disconnect_req->host_addr,
+ disconnect_req->me_addr);
+ pos->state = MEI_FILE_DISCONNECTED;
+ pos->timer_count = 0;
+ if (pos == &dev->wd_cl)
+ dev->wd_pending = false;
+ else if (pos == &dev->iamthif_cl)
+ dev->iamthif_timer = 0;
+
+ /* prepare disconnect response */
+ (void)mei_hbm_hdr((u32 *)&dev->wr_ext_msg.hdr, len);
+ disconnect_res =
+ (struct hbm_client_connect_response *)
+ &dev->wr_ext_msg.data;
+ disconnect_res->hbm_cmd = CLIENT_DISCONNECT_RES_CMD;
+ disconnect_res->host_addr = pos->host_client_id;
+ disconnect_res->me_addr = pos->me_client_id;
+ disconnect_res->status = 0;
+ break;
+ }
+ }
+}
+
+
+/**
+ * mei_hbm_dispatch - bottom half read routine after ISR to
+ * handle the read bus message cmd processing.
+ *
+ * @dev: the device structure
+ * @mei_hdr: header of bus message
+ */
+void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
+{
+ struct mei_bus_message *mei_msg;
+ struct mei_me_client *me_client;
+ struct hbm_host_version_response *version_res;
+ struct hbm_client_connect_response *connect_res;
+ struct hbm_client_connect_response *disconnect_res;
+ struct hbm_client_connect_request *disconnect_req;
+ struct hbm_flow_control *flow_control;
+ struct hbm_props_response *props_res;
+ struct hbm_host_enum_response *enum_res;
+ struct hbm_host_stop_request *stop_req;
+
+ /* read the message to our buffer */
+ BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf));
+ mei_read_slots(dev, dev->rd_msg_buf, hdr->length);
+ mei_msg = (struct mei_bus_message *)dev->rd_msg_buf;
+
+ switch (mei_msg->hbm_cmd) {
+ case HOST_START_RES_CMD:
+ version_res = (struct hbm_host_version_response *)mei_msg;
+ if (version_res->host_version_supported) {
+ dev->version.major_version = HBM_MAJOR_VERSION;
+ dev->version.minor_version = HBM_MINOR_VERSION;
+ if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
+ dev->init_clients_state == MEI_START_MESSAGE) {
+ dev->init_clients_timer = 0;
+ mei_host_enum_clients_message(dev);
+ } else {
+ dev->recvd_msg = false;
+ dev_dbg(&dev->pdev->dev, "IMEI reset due to received host start response bus message.\n");
+ mei_reset(dev, 1);
+ return;
+ }
+ } else {
+ u32 *buf = dev->wr_msg_buf;
+ const size_t len = sizeof(struct hbm_host_stop_request);
+
+ dev->version = version_res->me_max_version;
+
+ /* send stop message */
+ hdr = mei_hbm_hdr(&buf[0], len);
+ stop_req = (struct hbm_host_stop_request *)&buf[1];
+ memset(stop_req, 0, len);
+ stop_req->hbm_cmd = HOST_STOP_REQ_CMD;
+ stop_req->reason = DRIVER_STOP_REQUEST;
+
+ mei_write_message(dev, hdr, (unsigned char *)stop_req);
+ dev_dbg(&dev->pdev->dev, "version mismatch.\n");
+ return;
+ }
+
+ dev->recvd_msg = true;
+ dev_dbg(&dev->pdev->dev, "host start response message received.\n");
+ break;
+
+ case CLIENT_CONNECT_RES_CMD:
+ connect_res = (struct hbm_client_connect_response *) mei_msg;
+ mei_client_connect_response(dev, connect_res);
+ dev_dbg(&dev->pdev->dev, "client connect response message received.\n");
+ wake_up(&dev->wait_recvd_msg);
+ break;
+
+ case CLIENT_DISCONNECT_RES_CMD:
+ disconnect_res = (struct hbm_client_connect_response *) mei_msg;
+ mei_client_disconnect_response(dev, disconnect_res);
+ dev_dbg(&dev->pdev->dev, "client disconnect response message received.\n");
+ wake_up(&dev->wait_recvd_msg);
+ break;
+
+ case MEI_FLOW_CONTROL_CMD:
+ flow_control = (struct hbm_flow_control *) mei_msg;
+ mei_client_flow_control_response(dev, flow_control);
+ dev_dbg(&dev->pdev->dev, "client flow control response message received.\n");
+ break;
+
+ case HOST_CLIENT_PROPERTIES_RES_CMD:
+ props_res = (struct hbm_props_response *)mei_msg;
+ me_client = &dev->me_clients[dev->me_client_presentation_num];
+
+ if (props_res->status || !dev->me_clients) {
+ dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message wrong status.\n");
+ mei_reset(dev, 1);
+ return;
+ }
+
+ if (me_client->client_id != props_res->address) {
+ dev_err(&dev->pdev->dev,
+ "Host client properties reply mismatch\n");
+ mei_reset(dev, 1);
+
+ return;
+ }
+
+ if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
+ dev->init_clients_state != MEI_CLIENT_PROPERTIES_MESSAGE) {
+ dev_err(&dev->pdev->dev,
+ "Unexpected client properties reply\n");
+ mei_reset(dev, 1);
+
+ return;
+ }
+
+ me_client->props = props_res->client_properties;
+ dev->me_client_index++;
+ dev->me_client_presentation_num++;
+
+ mei_host_client_enumerate(dev);
+
+ break;
+
+ case HOST_ENUM_RES_CMD:
+ enum_res = (struct hbm_host_enum_response *) mei_msg;
+ memcpy(dev->me_clients_map, enum_res->valid_addresses, 32);
+ if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
+ dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) {
+ dev->init_clients_timer = 0;
+ dev->me_client_presentation_num = 0;
+ dev->me_client_index = 0;
+ mei_allocate_me_clients_storage(dev);
+ dev->init_clients_state =
+ MEI_CLIENT_PROPERTIES_MESSAGE;
+
+ mei_host_client_enumerate(dev);
+ } else {
+ dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n");
+ mei_reset(dev, 1);
+ return;
+ }
+ break;
+
+ case HOST_STOP_RES_CMD:
+ dev->dev_state = MEI_DEV_DISABLED;
+ dev_dbg(&dev->pdev->dev, "resetting because of FW stop response.\n");
+ mei_reset(dev, 1);
+ break;
+
+ case CLIENT_DISCONNECT_REQ_CMD:
+ /* search for client */
+ disconnect_req = (struct hbm_client_connect_request *)mei_msg;
+ mei_client_disconnect_request(dev, disconnect_req);
+ break;
+
+ case ME_STOP_REQ_CMD:
+ {
+ /* prepare stop request: sent in next interrupt event */
+
+ const size_t len = sizeof(struct hbm_host_stop_request);
+
+ hdr = mei_hbm_hdr((u32 *)&dev->wr_ext_msg.hdr, len);
+ stop_req = (struct hbm_host_stop_request *)&dev->wr_ext_msg.data;
+ memset(stop_req, 0, len);
+ stop_req->hbm_cmd = HOST_STOP_REQ_CMD;
+ stop_req->reason = DRIVER_STOP_REQUEST;
+ break;
+ }
+ default:
+ BUG();
+ break;
+
+ }
+}
+
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index eb18055..0536170 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -320,70 +320,6 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled)
}
-
-/**
- * host_start_message - mei host sends start message.
- *
- * @dev: the device structure
- *
- * returns none.
- */
-void mei_host_start_message(struct mei_device *dev)
-{
- struct mei_msg_hdr *mei_hdr;
- struct hbm_host_version_request *start_req;
- const size_t len = sizeof(struct hbm_host_version_request);
-
- mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
-
- /* host start message */
- start_req = (struct hbm_host_version_request *)&dev->wr_msg_buf[1];
- memset(start_req, 0, len);
- start_req->hbm_cmd = HOST_START_REQ_CMD;
- start_req->host_version.major_version = HBM_MAJOR_VERSION;
- start_req->host_version.minor_version = HBM_MINOR_VERSION;
-
- dev->recvd_msg = false;
- if (mei_write_message(dev, mei_hdr, (unsigned char *)start_req)) {
- dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n");
- dev->dev_state = MEI_DEV_RESETING;
- mei_reset(dev, 1);
- }
- dev->init_clients_state = MEI_START_MESSAGE;
- dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
- return ;
-}
-
-/**
- * host_enum_clients_message - host sends enumeration client request message.
- *
- * @dev: the device structure
- *
- * returns none.
- */
-void mei_host_enum_clients_message(struct mei_device *dev)
-{
- struct mei_msg_hdr *mei_hdr;
- struct hbm_host_enum_request *enum_req;
- const size_t len = sizeof(struct hbm_host_enum_request);
- /* enumerate clients */
- mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
-
- enum_req = (struct hbm_host_enum_request *) &dev->wr_msg_buf[1];
- memset(enum_req, 0, sizeof(struct hbm_host_enum_request));
- enum_req->hbm_cmd = HOST_ENUM_REQ_CMD;
-
- if (mei_write_message(dev, mei_hdr, (unsigned char *)enum_req)) {
- dev->dev_state = MEI_DEV_RESETING;
- dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n");
- mei_reset(dev, 1);
- }
- dev->init_clients_state = MEI_ENUM_CLIENTS_MESSAGE;
- dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
- return;
-}
-
-
/**
* allocate_me_clients_storage - allocates storage for me clients
*
@@ -457,53 +393,6 @@ void mei_host_client_init(struct work_struct *work)
mutex_unlock(&dev->device_lock);
}
-int mei_host_client_enumerate(struct mei_device *dev)
-{
-
- struct mei_msg_hdr *mei_hdr;
- struct hbm_props_request *prop_req;
- const size_t len = sizeof(struct hbm_props_request);
- unsigned long next_client_index;
- u8 client_num;
-
-
- client_num = dev->me_client_presentation_num;
-
- next_client_index = find_next_bit(dev->me_clients_map, MEI_CLIENTS_MAX,
- dev->me_client_index);
-
- /* We got all client properties */
- if (next_client_index == MEI_CLIENTS_MAX) {
- schedule_work(&dev->init_work);
-
- return 0;
- }
-
- dev->me_clients[client_num].client_id = next_client_index;
- dev->me_clients[client_num].mei_flow_ctrl_creds = 0;
-
- mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
- prop_req = (struct hbm_props_request *)&dev->wr_msg_buf[1];
-
- memset(prop_req, 0, sizeof(struct hbm_props_request));
-
-
- prop_req->hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD;
- prop_req->address = next_client_index;
-
- if (mei_write_message(dev, mei_hdr, (unsigned char *) prop_req)) {
- dev->dev_state = MEI_DEV_RESETING;
- dev_err(&dev->pdev->dev, "Properties request command failed\n");
- mei_reset(dev, 1);
-
- return -EIO;
- }
-
- dev->init_clients_timer = MEI_CLIENTS_INIT_TIMEOUT;
- dev->me_client_index = next_client_index;
-
- return 0;
-}
/**
* mei_init_file_private - initializes private file structure.
diff --git a/drivers/misc/mei/interface.c b/drivers/misc/mei/interface.c
index c2faeb1..2c9a5cc 100644
--- a/drivers/misc/mei/interface.c
+++ b/drivers/misc/mei/interface.c
@@ -367,34 +367,6 @@ int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl)
return -ENOENT;
}
-/**
- * mei_send_flow_control - sends flow control to fw.
- *
- * @dev: the device structure
- * @cl: private data of the file object
- *
- * This function returns -EIO on write failure
- */
-int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl)
-{
- struct mei_msg_hdr *mei_hdr;
- struct hbm_flow_control *flow_ctrl;
- const size_t len = sizeof(struct hbm_flow_control);
-
- mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
-
- flow_ctrl = (struct hbm_flow_control *)&dev->wr_msg_buf[1];
- memset(flow_ctrl, 0, len);
- flow_ctrl->hbm_cmd = MEI_FLOW_CONTROL_CMD;
- flow_ctrl->host_addr = cl->host_client_id;
- flow_ctrl->me_addr = cl->me_client_id;
- /* FIXME: reserved !? */
- memset(flow_ctrl->reserved, 0, sizeof(flow_ctrl->reserved));
- dev_dbg(&dev->pdev->dev, "sending flow control host client = %d, ME client = %d\n",
- cl->host_client_id, cl->me_client_id);
-
- return mei_write_message(dev, mei_hdr, (unsigned char *) flow_ctrl);
-}
/**
* mei_other_client_is_connecting - checks if other
@@ -421,53 +393,3 @@ int mei_other_client_is_connecting(struct mei_device *dev,
return 0;
}
-/**
- * mei_disconnect - sends disconnect message to fw.
- *
- * @dev: the device structure
- * @cl: private data of the file object
- *
- * This function returns -EIO on write failure
- */
-int mei_disconnect(struct mei_device *dev, struct mei_cl *cl)
-{
- struct mei_msg_hdr *hdr;
- struct hbm_client_connect_request *req;
- const size_t len = sizeof(struct hbm_client_connect_request);
-
- hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
-
- req = (struct hbm_client_connect_request *)&dev->wr_msg_buf[1];
- memset(req, 0, len);
- req->hbm_cmd = CLIENT_DISCONNECT_REQ_CMD;
- req->host_addr = cl->host_client_id;
- req->me_addr = cl->me_client_id;
- req->reserved = 0;
-
- return mei_write_message(dev, hdr, (unsigned char *)req);
-}
-
-/**
- * mei_connect - sends connect message to fw.
- *
- * @dev: the device structure
- * @cl: private data of the file object
- *
- * This function returns -EIO on write failure
- */
-int mei_connect(struct mei_device *dev, struct mei_cl *cl)
-{
- struct mei_msg_hdr *hdr;
- struct hbm_client_connect_request *req;
- const size_t len = sizeof(struct hbm_client_connect_request);
-
- hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
-
- req = (struct hbm_client_connect_request *) &dev->wr_msg_buf[1];
- req->hbm_cmd = CLIENT_CONNECT_REQ_CMD;
- req->host_addr = cl->host_client_id;
- req->me_addr = cl->me_client_id;
- req->reserved = 0;
-
- return mei_write_message(dev, hdr, (unsigned char *) req);
-}
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index cd89b68..d4312a8 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -208,7 +208,7 @@ static bool is_treat_specially_client(struct mei_cl *cl,
* @dev: the device structure
* @rs: connect response bus message
*/
-static void mei_client_connect_response(struct mei_device *dev,
+void mei_client_connect_response(struct mei_device *dev,
struct hbm_client_connect_response *rs)
{
@@ -261,8 +261,8 @@ static void mei_client_connect_response(struct mei_device *dev,
* @dev: the device structure
* @rs: disconnect response bus message
*/
-static void mei_client_disconnect_response(struct mei_device *dev,
- struct hbm_client_connect_response *rs)
+void mei_client_disconnect_response(struct mei_device *dev,
+ struct hbm_client_connect_response *rs)
{
struct mei_cl *cl;
struct mei_cl_cb *pos = NULL, *next = NULL;
@@ -347,7 +347,7 @@ static void add_single_flow_creds(struct mei_device *dev,
* @dev: the device structure
* @flow_control: flow control response bus message
*/
-static void mei_client_flow_control_response(struct mei_device *dev,
+void mei_client_flow_control_response(struct mei_device *dev,
struct hbm_flow_control *flow_control)
{
struct mei_cl *cl_pos = NULL;
@@ -381,231 +381,6 @@ static void mei_client_flow_control_response(struct mei_device *dev,
}
}
-/**
- * same_disconn_addr - tells if they have the same address
- *
- * @file: private data of the file object.
- * @disconn: disconnection request.
- *
- * returns !=0, same; 0,not.
- */
-static int same_disconn_addr(struct mei_cl *cl,
- struct hbm_client_connect_request *req)
-{
- return (cl->host_client_id == req->host_addr &&
- cl->me_client_id == req->me_addr);
-}
-
-/**
- * mei_client_disconnect_request - disconnects from request irq routine
- *
- * @dev: the device structure.
- * @disconnect_req: disconnect request bus message.
- */
-static void mei_client_disconnect_request(struct mei_device *dev,
- struct hbm_client_connect_request *disconnect_req)
-{
- struct hbm_client_connect_response *disconnect_res;
- struct mei_cl *pos, *next;
- const size_t len = sizeof(struct hbm_client_connect_response);
-
- list_for_each_entry_safe(pos, next, &dev->file_list, link) {
- if (same_disconn_addr(pos, disconnect_req)) {
- dev_dbg(&dev->pdev->dev, "disconnect request host client %d ME client %d.\n",
- disconnect_req->host_addr,
- disconnect_req->me_addr);
- pos->state = MEI_FILE_DISCONNECTED;
- pos->timer_count = 0;
- if (pos == &dev->wd_cl)
- dev->wd_pending = false;
- else if (pos == &dev->iamthif_cl)
- dev->iamthif_timer = 0;
-
- /* prepare disconnect response */
- (void)mei_hbm_hdr((u32 *)&dev->wr_ext_msg.hdr, len);
- disconnect_res =
- (struct hbm_client_connect_response *)
- &dev->wr_ext_msg.data;
- disconnect_res->hbm_cmd = CLIENT_DISCONNECT_RES_CMD;
- disconnect_res->host_addr = pos->host_client_id;
- disconnect_res->me_addr = pos->me_client_id;
- disconnect_res->status = 0;
- break;
- }
- }
-}
-
-/**
- * mei_irq_thread_read_bus_message - bottom half read routine after ISR to
- * handle the read bus message cmd processing.
- *
- * @dev: the device structure
- * @mei_hdr: header of bus message
- */
-static void mei_irq_thread_read_bus_message(struct mei_device *dev,
- struct mei_msg_hdr *hdr)
-{
- struct mei_bus_message *mei_msg;
- struct mei_me_client *me_client;
- struct hbm_host_version_response *version_res;
- struct hbm_client_connect_response *connect_res;
- struct hbm_client_connect_response *disconnect_res;
- struct hbm_client_connect_request *disconnect_req;
- struct hbm_flow_control *flow_control;
- struct hbm_props_response *props_res;
- struct hbm_host_enum_response *enum_res;
- struct hbm_host_stop_request *stop_req;
-
- /* read the message to our buffer */
- BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf));
- mei_read_slots(dev, dev->rd_msg_buf, hdr->length);
- mei_msg = (struct mei_bus_message *)dev->rd_msg_buf;
-
- switch (mei_msg->hbm_cmd) {
- case HOST_START_RES_CMD:
- version_res = (struct hbm_host_version_response *) mei_msg;
- if (version_res->host_version_supported) {
- dev->version.major_version = HBM_MAJOR_VERSION;
- dev->version.minor_version = HBM_MINOR_VERSION;
- if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
- dev->init_clients_state == MEI_START_MESSAGE) {
- dev->init_clients_timer = 0;
- mei_host_enum_clients_message(dev);
- } else {
- dev->recvd_msg = false;
- dev_dbg(&dev->pdev->dev, "IMEI reset due to received host start response bus message.\n");
- mei_reset(dev, 1);
- return;
- }
- } else {
- u32 *buf = dev->wr_msg_buf;
- const size_t len = sizeof(struct hbm_host_stop_request);
-
- dev->version = version_res->me_max_version;
-
- /* send stop message */
- hdr = mei_hbm_hdr(&buf[0], len);
- stop_req = (struct hbm_host_stop_request *)&buf[1];
- memset(stop_req, 0, len);
- stop_req->hbm_cmd = HOST_STOP_REQ_CMD;
- stop_req->reason = DRIVER_STOP_REQUEST;
-
- mei_write_message(dev, hdr, (unsigned char *)stop_req);
- dev_dbg(&dev->pdev->dev, "version mismatch.\n");
- return;
- }
-
- dev->recvd_msg = true;
- dev_dbg(&dev->pdev->dev, "host start response message received.\n");
- break;
-
- case CLIENT_CONNECT_RES_CMD:
- connect_res = (struct hbm_client_connect_response *) mei_msg;
- mei_client_connect_response(dev, connect_res);
- dev_dbg(&dev->pdev->dev, "client connect response message received.\n");
- wake_up(&dev->wait_recvd_msg);
- break;
-
- case CLIENT_DISCONNECT_RES_CMD:
- disconnect_res = (struct hbm_client_connect_response *) mei_msg;
- mei_client_disconnect_response(dev, disconnect_res);
- dev_dbg(&dev->pdev->dev, "client disconnect response message received.\n");
- wake_up(&dev->wait_recvd_msg);
- break;
-
- case MEI_FLOW_CONTROL_CMD:
- flow_control = (struct hbm_flow_control *) mei_msg;
- mei_client_flow_control_response(dev, flow_control);
- dev_dbg(&dev->pdev->dev, "client flow control response message received.\n");
- break;
-
- case HOST_CLIENT_PROPERTIES_RES_CMD:
- props_res = (struct hbm_props_response *)mei_msg;
- me_client = &dev->me_clients[dev->me_client_presentation_num];
-
- if (props_res->status || !dev->me_clients) {
- dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message wrong status.\n");
- mei_reset(dev, 1);
- return;
- }
-
- if (me_client->client_id != props_res->address) {
- dev_err(&dev->pdev->dev,
- "Host client properties reply mismatch\n");
- mei_reset(dev, 1);
-
- return;
- }
-
- if (dev->dev_state != MEI_DEV_INIT_CLIENTS ||
- dev->init_clients_state != MEI_CLIENT_PROPERTIES_MESSAGE) {
- dev_err(&dev->pdev->dev,
- "Unexpected client properties reply\n");
- mei_reset(dev, 1);
-
- return;
- }
-
- me_client->props = props_res->client_properties;
- dev->me_client_index++;
- dev->me_client_presentation_num++;
-
- mei_host_client_enumerate(dev);
-
- break;
-
- case HOST_ENUM_RES_CMD:
- enum_res = (struct hbm_host_enum_response *) mei_msg;
- memcpy(dev->me_clients_map, enum_res->valid_addresses, 32);
- if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
- dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) {
- dev->init_clients_timer = 0;
- dev->me_client_presentation_num = 0;
- dev->me_client_index = 0;
- mei_allocate_me_clients_storage(dev);
- dev->init_clients_state =
- MEI_CLIENT_PROPERTIES_MESSAGE;
-
- mei_host_client_enumerate(dev);
- } else {
- dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n");
- mei_reset(dev, 1);
- return;
- }
- break;
-
- case HOST_STOP_RES_CMD:
- dev->dev_state = MEI_DEV_DISABLED;
- dev_dbg(&dev->pdev->dev, "resetting because of FW stop response.\n");
- mei_reset(dev, 1);
- break;
-
- case CLIENT_DISCONNECT_REQ_CMD:
- /* search for client */
- disconnect_req = (struct hbm_client_connect_request *)mei_msg;
- mei_client_disconnect_request(dev, disconnect_req);
- break;
-
- case ME_STOP_REQ_CMD:
- {
- /* prepare stop request: sent in next interrupt event */
-
- const size_t len = sizeof(struct hbm_host_stop_request);
-
- hdr = mei_hbm_hdr((u32 *)&dev->wr_ext_msg.hdr, len);
- stop_req = (struct hbm_host_stop_request *)&dev->wr_ext_msg.data;
- memset(stop_req, 0, len);
- stop_req->hbm_cmd = HOST_STOP_REQ_CMD;
- stop_req->reason = DRIVER_STOP_REQUEST;
- break;
- }
- default:
- BUG();
- break;
-
- }
-}
-
/**
* _mei_hb_read - processes read related operation.
@@ -806,7 +581,7 @@ static int mei_irq_thread_read_handler(struct mei_cl_cb *cmpl_list,
/* decide where to read the message too */
if (!mei_hdr->host_addr) {
dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_bus_message.\n");
- mei_irq_thread_read_bus_message(dev, mei_hdr);
+ mei_hbm_dispatch(dev, mei_hdr);
dev_dbg(&dev->pdev->dev, "end mei_irq_thread_read_bus_message.\n");
} else if (mei_hdr->host_addr == dev->iamthif_cl.host_client_id &&
(MEI_FILE_CONNECTED == dev->iamthif_cl.state) &&
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 38693c5..4d065ad 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -402,6 +402,14 @@ int mei_ioctl_connect_client(struct file *file,
int mei_start_read(struct mei_device *dev, struct mei_cl *cl);
+void mei_client_disconnect_response(struct mei_device *dev,
+ struct hbm_client_connect_response *rs);
+
+void mei_client_connect_response(struct mei_device *dev,
+ struct hbm_client_connect_response *rs);
+
+void mei_client_flow_control_response(struct mei_device *dev,
+ struct hbm_flow_control *flow_control);
/*
* AMTHIF - AMT Host Interface Functions
*/
@@ -452,6 +460,8 @@ void mei_enable_interrupts(struct mei_device *dev);
void mei_disable_interrupts(struct mei_device *dev);
+void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);
+
static inline struct mei_msg_hdr *mei_hbm_hdr(u32 *buf, size_t length)
{
struct mei_msg_hdr *hdr = (struct mei_msg_hdr *)buf;
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 11/15] mei: drop non existent function prototype
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (8 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 10/15] mei: move host bus message handling to hbm.c Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 12/15] mei: simplify preparing client host bus messages Tomas Winkler
` (3 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
mei_amthif_read_message prototype was not dropped
in one of the movinig/renaming patches
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/mei_dev.h | 3 ---
1 files changed, 0 insertions(+), 3 deletions(-)
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 4d065ad..bc2bedc 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -433,9 +433,6 @@ struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev,
void mei_amthif_run_next_cmd(struct mei_device *dev);
-int mei_amthif_read_message(struct mei_cl_cb *complete_list,
- struct mei_device *dev, struct mei_msg_hdr *mei_hdr);
-
int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list);
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 12/15] mei: simplify preparing client host bus messages
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (9 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 11/15] mei: drop non existent function prototype Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 13/15] mei: use structured buffer for write buffer Tomas Winkler
` (2 subsequent siblings)
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
Define a new parrent type mei_hbm_cl_cmd for hbm
command that are send on behalf of specific client
Now we can compat boilerplate code using mei_hbm_cl_hdr
function
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/hbm.c | 110 +++++++++++++++++++++++------------------------
drivers/misc/mei/hw.h | 16 +++++++
2 files changed, 70 insertions(+), 56 deletions(-)
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 2c4c1bb..bc36c23 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -23,6 +23,42 @@
#include "interface.h"
/**
+ * mei_hbm_cl_hdr - construct client hbm header
+ * @cl: - client
+ * @hbm_cmd: host bus message command
+ * @buf: buffer for cl header
+ * @len: buffer length
+ */
+static inline
+void mei_hbm_cl_hdr(struct mei_cl *cl, u8 hbm_cmd, void *buf, size_t len)
+{
+ struct mei_hbm_cl_cmd *cmd = buf;
+
+ memset(cmd, 0, len);
+
+ cmd->hbm_cmd = hbm_cmd;
+ cmd->host_addr = cl->host_client_id;
+ cmd->me_addr = cl->me_client_id;
+}
+
+/**
+ * same_disconn_addr - tells if they have the same address
+ *
+ * @file: private data of the file object.
+ * @disconn: disconnection request.
+ *
+ * returns true if addres are same
+ */
+static inline
+bool mei_hbm_cl_addr_equal(struct mei_cl *cl, void *buf)
+{
+ struct mei_hbm_cl_cmd *cmd = buf;
+ return cl->host_client_id == cmd->host_addr &&
+ cl->me_client_id == cmd->me_addr;
+}
+
+
+/**
* host_start_message - mei host sends start message.
*
* @dev: the device structure
@@ -144,22 +180,16 @@ int mei_host_client_enumerate(struct mei_device *dev)
int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl)
{
struct mei_msg_hdr *mei_hdr;
- struct hbm_flow_control *flow_ctrl;
+ unsigned char *buf = (unsigned char *)&dev->wr_msg_buf[1];
const size_t len = sizeof(struct hbm_flow_control);
mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+ mei_hbm_cl_hdr(cl, MEI_FLOW_CONTROL_CMD, buf, len);
- flow_ctrl = (struct hbm_flow_control *)&dev->wr_msg_buf[1];
- memset(flow_ctrl, 0, len);
- flow_ctrl->hbm_cmd = MEI_FLOW_CONTROL_CMD;
- flow_ctrl->host_addr = cl->host_client_id;
- flow_ctrl->me_addr = cl->me_client_id;
- /* FIXME: reserved !? */
- memset(flow_ctrl->reserved, 0, sizeof(flow_ctrl->reserved));
dev_dbg(&dev->pdev->dev, "sending flow control host client = %d, ME client = %d\n",
cl->host_client_id, cl->me_client_id);
- return mei_write_message(dev, mei_hdr, (unsigned char *) flow_ctrl);
+ return mei_write_message(dev, mei_hdr, buf);
}
/**
@@ -173,19 +203,13 @@ int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl)
int mei_disconnect(struct mei_device *dev, struct mei_cl *cl)
{
struct mei_msg_hdr *hdr;
- struct hbm_client_connect_request *req;
+ unsigned char *buf = (unsigned char *)&dev->wr_msg_buf[1];
const size_t len = sizeof(struct hbm_client_connect_request);
hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+ mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_REQ_CMD, buf, len);
- req = (struct hbm_client_connect_request *)&dev->wr_msg_buf[1];
- memset(req, 0, len);
- req->hbm_cmd = CLIENT_DISCONNECT_REQ_CMD;
- req->host_addr = cl->host_client_id;
- req->me_addr = cl->me_client_id;
- req->reserved = 0;
-
- return mei_write_message(dev, hdr, (unsigned char *)req);
+ return mei_write_message(dev, hdr, buf);
}
/**
@@ -199,33 +223,13 @@ int mei_disconnect(struct mei_device *dev, struct mei_cl *cl)
int mei_connect(struct mei_device *dev, struct mei_cl *cl)
{
struct mei_msg_hdr *hdr;
- struct hbm_client_connect_request *req;
+ unsigned char *buf = (unsigned char *)&dev->wr_msg_buf[1];
const size_t len = sizeof(struct hbm_client_connect_request);
hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+ mei_hbm_cl_hdr(cl, CLIENT_CONNECT_REQ_CMD, buf, len);
- req = (struct hbm_client_connect_request *) &dev->wr_msg_buf[1];
- req->hbm_cmd = CLIENT_CONNECT_REQ_CMD;
- req->host_addr = cl->host_client_id;
- req->me_addr = cl->me_client_id;
- req->reserved = 0;
-
- return mei_write_message(dev, hdr, (unsigned char *) req);
-}
-
-/**
- * same_disconn_addr - tells if they have the same address
- *
- * @file: private data of the file object.
- * @disconn: disconnection request.
- *
- * returns !=0, same; 0,not.
- */
-static int same_disconn_addr(struct mei_cl *cl,
- struct hbm_client_connect_request *req)
-{
- return (cl->host_client_id == req->host_addr &&
- cl->me_client_id == req->me_addr);
+ return mei_write_message(dev, hdr, buf);
}
/**
@@ -237,31 +241,25 @@ static int same_disconn_addr(struct mei_cl *cl,
static void mei_client_disconnect_request(struct mei_device *dev,
struct hbm_client_connect_request *disconnect_req)
{
- struct hbm_client_connect_response *disconnect_res;
- struct mei_cl *pos, *next;
+ struct mei_cl *cl, *next;
const size_t len = sizeof(struct hbm_client_connect_response);
- list_for_each_entry_safe(pos, next, &dev->file_list, link) {
- if (same_disconn_addr(pos, disconnect_req)) {
+ list_for_each_entry_safe(cl, next, &dev->file_list, link) {
+ if (mei_hbm_cl_addr_equal(cl, disconnect_req)) {
dev_dbg(&dev->pdev->dev, "disconnect request host client %d ME client %d.\n",
disconnect_req->host_addr,
disconnect_req->me_addr);
- pos->state = MEI_FILE_DISCONNECTED;
- pos->timer_count = 0;
- if (pos == &dev->wd_cl)
+ cl->state = MEI_FILE_DISCONNECTED;
+ cl->timer_count = 0;
+ if (cl == &dev->wd_cl)
dev->wd_pending = false;
- else if (pos == &dev->iamthif_cl)
+ else if (cl == &dev->iamthif_cl)
dev->iamthif_timer = 0;
/* prepare disconnect response */
(void)mei_hbm_hdr((u32 *)&dev->wr_ext_msg.hdr, len);
- disconnect_res =
- (struct hbm_client_connect_response *)
- &dev->wr_ext_msg.data;
- disconnect_res->hbm_cmd = CLIENT_DISCONNECT_RES_CMD;
- disconnect_res->host_addr = pos->host_client_id;
- disconnect_res->me_addr = pos->me_client_id;
- disconnect_res->status = 0;
+ mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_RES_CMD,
+ &dev->wr_ext_msg.data, len);
break;
}
}
diff --git a/drivers/misc/mei/hw.h b/drivers/misc/mei/hw.h
index 6ebb369..cb2f556 100644
--- a/drivers/misc/mei/hw.h
+++ b/drivers/misc/mei/hw.h
@@ -121,6 +121,22 @@ struct mei_bus_message {
u8 data[0];
} __packed;
+/**
+ * struct hbm_cl_cmd - client specific host bus command
+ * CONNECT, DISCONNECT, and FlOW CONTROL
+ *
+ * @hbm_cmd - bus message command header
+ * @me_addr - address of the client in ME
+ * @host_addr - address of the client in the driver
+ * @data
+ */
+struct mei_hbm_cl_cmd {
+ u8 hbm_cmd;
+ u8 me_addr;
+ u8 host_addr;
+ u8 data;
+};
+
struct hbm_version {
u8 minor_version;
u8 major_version;
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 13/15] mei: use structured buffer for write buffer
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (10 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 12/15] mei: simplify preparing client host bus messages Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 14/15] mei: add common prefix to hbm function Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 15/15] mei: move hbm responses from interrupt.c to hbm.c Tomas Winkler
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
We can drop useless castings and use proper types
Modify mei_hbm_hdr as casting is not necessary anymore
Add mei_hbm_stop_request_prepare function that
utilize the new structure
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/amthif.c | 25 ++++----
drivers/misc/mei/hbm.c | 134 +++++++++++++++++++++---------------------
drivers/misc/mei/interrupt.c | 25 ++++----
drivers/misc/mei/mei_dev.h | 12 +++-
drivers/misc/mei/wd.c | 17 +++---
5 files changed, 108 insertions(+), 105 deletions(-)
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index bb613f7..f9d458c 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -432,34 +432,33 @@ unsigned int mei_amthif_poll(struct mei_device *dev,
int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list)
{
- struct mei_msg_hdr *mei_hdr;
+ struct mei_msg_hdr mei_hdr;
struct mei_cl *cl = cb->cl;
size_t len = dev->iamthif_msg_buf_size - dev->iamthif_msg_buf_index;
size_t msg_slots = mei_data2slots(len);
- mei_hdr = (struct mei_msg_hdr *)&dev->wr_msg_buf[0];
- mei_hdr->host_addr = cl->host_client_id;
- mei_hdr->me_addr = cl->me_client_id;
- mei_hdr->reserved = 0;
+ mei_hdr.host_addr = cl->host_client_id;
+ mei_hdr.me_addr = cl->me_client_id;
+ mei_hdr.reserved = 0;
if (*slots >= msg_slots) {
- mei_hdr->length = len;
- mei_hdr->msg_complete = 1;
+ mei_hdr.length = len;
+ mei_hdr.msg_complete = 1;
/* Split the message only if we can write the whole host buffer */
} else if (*slots == dev->hbuf_depth) {
msg_slots = *slots;
len = (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
- mei_hdr->length = len;
- mei_hdr->msg_complete = 0;
+ mei_hdr.length = len;
+ mei_hdr.msg_complete = 0;
} else {
/* wait for next time the host buffer is empty */
return 0;
}
- dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
+ dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(&mei_hdr));
*slots -= msg_slots;
- if (mei_write_message(dev, mei_hdr,
+ if (mei_write_message(dev, &mei_hdr,
dev->iamthif_msg_buf + dev->iamthif_msg_buf_index)) {
dev->iamthif_state = MEI_IAMTHIF_IDLE;
cl->status = -ENODEV;
@@ -470,10 +469,10 @@ int mei_amthif_irq_write_complete(struct mei_device *dev, s32 *slots,
if (mei_flow_ctrl_reduce(dev, cl))
return -ENODEV;
- dev->iamthif_msg_buf_index += mei_hdr->length;
+ dev->iamthif_msg_buf_index += mei_hdr.length;
cl->status = 0;
- if (mei_hdr->msg_complete) {
+ if (mei_hdr.msg_complete) {
dev->iamthif_state = MEI_IAMTHIF_FLOW_CONTROL;
dev->iamthif_flow_control_pending = true;
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index bc36c23..e9ba51d 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -67,21 +67,21 @@ bool mei_hbm_cl_addr_equal(struct mei_cl *cl, void *buf)
*/
void mei_host_start_message(struct mei_device *dev)
{
- struct mei_msg_hdr *mei_hdr;
+ struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
struct hbm_host_version_request *start_req;
const size_t len = sizeof(struct hbm_host_version_request);
- mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+ mei_hbm_hdr(mei_hdr, len);
/* host start message */
- start_req = (struct hbm_host_version_request *)&dev->wr_msg_buf[1];
+ start_req = (struct hbm_host_version_request *)dev->wr_msg.data;
memset(start_req, 0, len);
start_req->hbm_cmd = HOST_START_REQ_CMD;
start_req->host_version.major_version = HBM_MAJOR_VERSION;
start_req->host_version.minor_version = HBM_MINOR_VERSION;
dev->recvd_msg = false;
- if (mei_write_message(dev, mei_hdr, (unsigned char *)start_req)) {
+ if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) {
dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n");
dev->dev_state = MEI_DEV_RESETING;
mei_reset(dev, 1);
@@ -100,17 +100,17 @@ void mei_host_start_message(struct mei_device *dev)
*/
void mei_host_enum_clients_message(struct mei_device *dev)
{
- struct mei_msg_hdr *mei_hdr;
+ struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
struct hbm_host_enum_request *enum_req;
const size_t len = sizeof(struct hbm_host_enum_request);
/* enumerate clients */
- mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
+ mei_hbm_hdr(mei_hdr, len);
- enum_req = (struct hbm_host_enum_request *) &dev->wr_msg_buf[1];
- memset(enum_req, 0, sizeof(struct hbm_host_enum_request));
+ enum_req = (struct hbm_host_enum_request *)dev->wr_msg.data;
+ memset(enum_req, 0, len);
enum_req->hbm_cmd = HOST_ENUM_REQ_CMD;
- if (mei_write_message(dev, mei_hdr, (unsigned char *)enum_req)) {
+ if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) {
dev->dev_state = MEI_DEV_RESETING;
dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n");
mei_reset(dev, 1);
@@ -124,7 +124,7 @@ void mei_host_enum_clients_message(struct mei_device *dev)
int mei_host_client_enumerate(struct mei_device *dev)
{
- struct mei_msg_hdr *mei_hdr;
+ struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
struct hbm_props_request *prop_req;
const size_t len = sizeof(struct hbm_props_request);
unsigned long next_client_index;
@@ -146,8 +146,8 @@ int mei_host_client_enumerate(struct mei_device *dev)
dev->me_clients[client_num].client_id = next_client_index;
dev->me_clients[client_num].mei_flow_ctrl_creds = 0;
- mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
- prop_req = (struct hbm_props_request *)&dev->wr_msg_buf[1];
+ mei_hbm_hdr(mei_hdr, len);
+ prop_req = (struct hbm_props_request *)dev->wr_msg.data;
memset(prop_req, 0, sizeof(struct hbm_props_request));
@@ -155,7 +155,7 @@ int mei_host_client_enumerate(struct mei_device *dev)
prop_req->hbm_cmd = HOST_CLIENT_PROPERTIES_REQ_CMD;
prop_req->address = next_client_index;
- if (mei_write_message(dev, mei_hdr, (unsigned char *) prop_req)) {
+ if (mei_write_message(dev, mei_hdr, dev->wr_msg.data)) {
dev->dev_state = MEI_DEV_RESETING;
dev_err(&dev->pdev->dev, "Properties request command failed\n");
mei_reset(dev, 1);
@@ -170,6 +170,27 @@ int mei_host_client_enumerate(struct mei_device *dev)
}
/**
+ * mei_hbm_stop_req_prepare - perpare stop request message
+ *
+ * @dev - mei device
+ * @mei_hdr - mei message header
+ * @data - hbm message body buffer
+ */
+static void mei_hbm_stop_req_prepare(struct mei_device *dev,
+ struct mei_msg_hdr *mei_hdr, unsigned char *data)
+{
+ struct hbm_host_stop_request *req =
+ (struct hbm_host_stop_request *)data;
+ const size_t len = sizeof(struct hbm_host_stop_request);
+
+ mei_hbm_hdr(mei_hdr, len);
+
+ memset(req, 0, len);
+ req->hbm_cmd = HOST_STOP_REQ_CMD;
+ req->reason = DRIVER_STOP_REQUEST;
+}
+
+/**
* mei_send_flow_control - sends flow control to fw.
*
* @dev: the device structure
@@ -179,17 +200,16 @@ int mei_host_client_enumerate(struct mei_device *dev)
*/
int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl)
{
- struct mei_msg_hdr *mei_hdr;
- unsigned char *buf = (unsigned char *)&dev->wr_msg_buf[1];
+ struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_flow_control);
- mei_hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
- mei_hbm_cl_hdr(cl, MEI_FLOW_CONTROL_CMD, buf, len);
+ mei_hbm_hdr(mei_hdr, len);
+ mei_hbm_cl_hdr(cl, MEI_FLOW_CONTROL_CMD, dev->wr_msg.data, len);
dev_dbg(&dev->pdev->dev, "sending flow control host client = %d, ME client = %d\n",
cl->host_client_id, cl->me_client_id);
- return mei_write_message(dev, mei_hdr, buf);
+ return mei_write_message(dev, mei_hdr, dev->wr_msg.data);
}
/**
@@ -202,14 +222,13 @@ int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl)
*/
int mei_disconnect(struct mei_device *dev, struct mei_cl *cl)
{
- struct mei_msg_hdr *hdr;
- unsigned char *buf = (unsigned char *)&dev->wr_msg_buf[1];
+ struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_client_connect_request);
- hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
- mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_REQ_CMD, buf, len);
+ mei_hbm_hdr(mei_hdr, len);
+ mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_REQ_CMD, dev->wr_msg.data, len);
- return mei_write_message(dev, hdr, buf);
+ return mei_write_message(dev, mei_hdr, dev->wr_msg.data);
}
/**
@@ -222,14 +241,13 @@ int mei_disconnect(struct mei_device *dev, struct mei_cl *cl)
*/
int mei_connect(struct mei_device *dev, struct mei_cl *cl)
{
- struct mei_msg_hdr *hdr;
- unsigned char *buf = (unsigned char *)&dev->wr_msg_buf[1];
+ struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_client_connect_request);
- hdr = mei_hbm_hdr(&dev->wr_msg_buf[0], len);
- mei_hbm_cl_hdr(cl, CLIENT_CONNECT_REQ_CMD, buf, len);
+ mei_hbm_hdr(mei_hdr, len);
+ mei_hbm_cl_hdr(cl, CLIENT_CONNECT_REQ_CMD, dev->wr_msg.data, len);
- return mei_write_message(dev, hdr, buf);
+ return mei_write_message(dev, mei_hdr, dev->wr_msg.data);
}
/**
@@ -257,9 +275,9 @@ static void mei_client_disconnect_request(struct mei_device *dev,
dev->iamthif_timer = 0;
/* prepare disconnect response */
- (void)mei_hbm_hdr((u32 *)&dev->wr_ext_msg.hdr, len);
+ mei_hbm_hdr(&dev->wr_ext_msg.hdr, len);
mei_hbm_cl_hdr(cl, CLIENT_DISCONNECT_RES_CMD,
- &dev->wr_ext_msg.data, len);
+ dev->wr_ext_msg.data, len);
break;
}
}
@@ -284,7 +302,6 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
struct hbm_flow_control *flow_control;
struct hbm_props_response *props_res;
struct hbm_host_enum_response *enum_res;
- struct hbm_host_stop_request *stop_req;
/* read the message to our buffer */
BUG_ON(hdr->length >= sizeof(dev->rd_msg_buf));
@@ -294,34 +311,27 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
switch (mei_msg->hbm_cmd) {
case HOST_START_RES_CMD:
version_res = (struct hbm_host_version_response *)mei_msg;
- if (version_res->host_version_supported) {
- dev->version.major_version = HBM_MAJOR_VERSION;
- dev->version.minor_version = HBM_MINOR_VERSION;
- if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
- dev->init_clients_state == MEI_START_MESSAGE) {
- dev->init_clients_timer = 0;
- mei_host_enum_clients_message(dev);
- } else {
- dev->recvd_msg = false;
- dev_dbg(&dev->pdev->dev, "IMEI reset due to received host start response bus message.\n");
- mei_reset(dev, 1);
- return;
- }
- } else {
- u32 *buf = dev->wr_msg_buf;
- const size_t len = sizeof(struct hbm_host_stop_request);
-
+ if (!version_res->host_version_supported) {
dev->version = version_res->me_max_version;
+ dev_dbg(&dev->pdev->dev, "version mismatch.\n");
- /* send stop message */
- hdr = mei_hbm_hdr(&buf[0], len);
- stop_req = (struct hbm_host_stop_request *)&buf[1];
- memset(stop_req, 0, len);
- stop_req->hbm_cmd = HOST_STOP_REQ_CMD;
- stop_req->reason = DRIVER_STOP_REQUEST;
+ mei_hbm_stop_req_prepare(dev, &dev->wr_msg.hdr,
+ dev->wr_msg.data);
+ mei_write_message(dev, &dev->wr_msg.hdr,
+ dev->wr_msg.data);
+ return;
+ }
- mei_write_message(dev, hdr, (unsigned char *)stop_req);
- dev_dbg(&dev->pdev->dev, "version mismatch.\n");
+ dev->version.major_version = HBM_MAJOR_VERSION;
+ dev->version.minor_version = HBM_MINOR_VERSION;
+ if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
+ dev->init_clients_state == MEI_START_MESSAGE) {
+ dev->init_clients_timer = 0;
+ mei_host_enum_clients_message(dev);
+ } else {
+ dev->recvd_msg = false;
+ dev_dbg(&dev->pdev->dev, "reset due to received hbm: host start\n");
+ mei_reset(dev, 1);
return;
}
@@ -417,18 +427,10 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
break;
case ME_STOP_REQ_CMD:
- {
- /* prepare stop request: sent in next interrupt event */
- const size_t len = sizeof(struct hbm_host_stop_request);
-
- hdr = mei_hbm_hdr((u32 *)&dev->wr_ext_msg.hdr, len);
- stop_req = (struct hbm_host_stop_request *)&dev->wr_ext_msg.data;
- memset(stop_req, 0, len);
- stop_req->hbm_cmd = HOST_STOP_REQ_CMD;
- stop_req->reason = DRIVER_STOP_REQUEST;
+ mei_hbm_stop_req_prepare(dev, &dev->wr_ext_msg.hdr,
+ dev->wr_ext_msg.data);
break;
- }
default:
BUG();
break;
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index d4312a8..9cbf148 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -469,25 +469,24 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb, struct mei_cl_cb *cmpl_list)
{
- struct mei_msg_hdr *mei_hdr;
+ struct mei_msg_hdr mei_hdr;
struct mei_cl *cl = cb->cl;
size_t len = cb->request_buffer.size - cb->buf_idx;
size_t msg_slots = mei_data2slots(len);
- mei_hdr = (struct mei_msg_hdr *)&dev->wr_msg_buf[0];
- mei_hdr->host_addr = cl->host_client_id;
- mei_hdr->me_addr = cl->me_client_id;
- mei_hdr->reserved = 0;
+ mei_hdr.host_addr = cl->host_client_id;
+ mei_hdr.me_addr = cl->me_client_id;
+ mei_hdr.reserved = 0;
if (*slots >= msg_slots) {
- mei_hdr->length = len;
- mei_hdr->msg_complete = 1;
+ mei_hdr.length = len;
+ mei_hdr.msg_complete = 1;
/* Split the message only if we can write the whole host buffer */
} else if (*slots == dev->hbuf_depth) {
msg_slots = *slots;
len = (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
- mei_hdr->length = len;
- mei_hdr->msg_complete = 0;
+ mei_hdr.length = len;
+ mei_hdr.msg_complete = 0;
} else {
/* wait for next time the host buffer is empty */
return 0;
@@ -495,10 +494,10 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots,
dev_dbg(&dev->pdev->dev, "buf: size = %d idx = %lu\n",
cb->request_buffer.size, cb->buf_idx);
- dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr));
+ dev_dbg(&dev->pdev->dev, MEI_HDR_FMT, MEI_HDR_PRM(&mei_hdr));
*slots -= msg_slots;
- if (mei_write_message(dev, mei_hdr,
+ if (mei_write_message(dev, &mei_hdr,
cb->request_buffer.data + cb->buf_idx)) {
cl->status = -ENODEV;
list_move_tail(&cb->list, &cmpl_list->list);
@@ -509,8 +508,8 @@ static int mei_irq_thread_write_complete(struct mei_device *dev, s32 *slots,
return -ENODEV;
cl->status = 0;
- cb->buf_idx += mei_hdr->length;
- if (mei_hdr->msg_complete)
+ cb->buf_idx += mei_hdr.length;
+ if (mei_hdr.msg_complete)
list_move_tail(&cb->list, &dev->write_waiting_list.list);
return 0;
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index bc2bedc..1017e54 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -265,7 +265,13 @@ struct mei_device {
unsigned char rd_msg_buf[MEI_RD_MSG_BUF_SIZE]; /* control messages */
u32 rd_msg_hdr;
- u32 wr_msg_buf[128]; /* used for control messages */
+
+ /* used for control messages */
+ struct {
+ struct mei_msg_hdr hdr;
+ unsigned char data[128];
+ } wr_msg;
+
struct {
struct mei_msg_hdr hdr;
unsigned char data[4]; /* All HBM messages are 4 bytes */
@@ -459,15 +465,13 @@ void mei_disable_interrupts(struct mei_device *dev);
void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr);
-static inline struct mei_msg_hdr *mei_hbm_hdr(u32 *buf, size_t length)
+static inline void mei_hbm_hdr(struct mei_msg_hdr *hdr, size_t length)
{
- struct mei_msg_hdr *hdr = (struct mei_msg_hdr *)buf;
hdr->host_addr = 0;
hdr->me_addr = 0;
hdr->length = length;
hdr->msg_complete = 1;
hdr->reserved = 0;
- return hdr;
}
#define MEI_HDR_FMT "hdr:host=%02d me=%02d len=%d comp=%1d"
diff --git a/drivers/misc/mei/wd.c b/drivers/misc/mei/wd.c
index 9a5c782..9851de4 100644
--- a/drivers/misc/mei/wd.c
+++ b/drivers/misc/mei/wd.c
@@ -101,22 +101,21 @@ int mei_wd_host_init(struct mei_device *dev)
*/
int mei_wd_send(struct mei_device *dev)
{
- struct mei_msg_hdr *hdr;
+ struct mei_msg_hdr hdr;
- hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0];
- hdr->host_addr = dev->wd_cl.host_client_id;
- hdr->me_addr = dev->wd_cl.me_client_id;
- hdr->msg_complete = 1;
- hdr->reserved = 0;
+ hdr.host_addr = dev->wd_cl.host_client_id;
+ hdr.me_addr = dev->wd_cl.me_client_id;
+ hdr.msg_complete = 1;
+ hdr.reserved = 0;
if (!memcmp(dev->wd_data, mei_start_wd_params, MEI_WD_HDR_SIZE))
- hdr->length = MEI_WD_START_MSG_SIZE;
+ hdr.length = MEI_WD_START_MSG_SIZE;
else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_HDR_SIZE))
- hdr->length = MEI_WD_STOP_MSG_SIZE;
+ hdr.length = MEI_WD_STOP_MSG_SIZE;
else
return -EINVAL;
- return mei_write_message(dev, hdr, dev->wd_data);
+ return mei_write_message(dev, &hdr, dev->wd_data);
}
/**
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 14/15] mei: add common prefix to hbm function
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (11 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 13/15] mei: use structured buffer for write buffer Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
2012-12-04 14:04 ` [char-misc-next 15/15] mei: move hbm responses from interrupt.c to hbm.c Tomas Winkler
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
1. use mei_hbm_ for basic host bus message function
2. use mei_hbm_cl prefix for host bus messages that operation
on behalf of a client
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/amthif.c | 7 +++--
drivers/misc/mei/hbm.c | 56 ++++++++++++++++++++++++------------------
drivers/misc/mei/init.c | 4 +-
drivers/misc/mei/interface.h | 11 +++++---
drivers/misc/mei/interrupt.c | 10 +++---
drivers/misc/mei/iorw.c | 4 +-
drivers/misc/mei/mei_dev.h | 9 ------
drivers/misc/mei/wd.c | 2 +-
8 files changed, 53 insertions(+), 50 deletions(-)
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c
index f9d458c..6e3cd31 100644
--- a/drivers/misc/mei/amthif.c
+++ b/drivers/misc/mei/amthif.c
@@ -98,7 +98,7 @@ void mei_amthif_host_init(struct mei_device *dev)
dev->iamthif_msg_buf = msg_buf;
- if (mei_connect(dev, &dev->iamthif_cl)) {
+ if (mei_hbm_cl_connect_req(dev, &dev->iamthif_cl)) {
dev_dbg(&dev->pdev->dev, "Failed to connect to AMTHI client\n");
dev->iamthif_cl.state = MEI_FILE_DISCONNECTED;
dev->iamthif_cl.host_client_id = 0;
@@ -558,7 +558,7 @@ int mei_amthif_irq_read(struct mei_device *dev, s32 *slots)
return -EMSGSIZE;
}
*slots -= mei_data2slots(sizeof(struct hbm_flow_control));
- if (mei_send_flow_control(dev, &dev->iamthif_cl)) {
+ if (mei_hbm_cl_flow_control_req(dev, &dev->iamthif_cl)) {
dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n");
return -EIO;
}
@@ -630,7 +630,8 @@ static bool mei_clear_list(struct mei_device *dev,
if (dev->iamthif_current_cb == cb_pos) {
dev->iamthif_current_cb = NULL;
/* send flow control to iamthif client */
- mei_send_flow_control(dev, &dev->iamthif_cl);
+ mei_hbm_cl_flow_control_req(dev,
+ &dev->iamthif_cl);
}
/* free all allocated buffers */
mei_io_cb_free(cb_pos);
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index e9ba51d..3c99140 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -59,13 +59,11 @@ bool mei_hbm_cl_addr_equal(struct mei_cl *cl, void *buf)
/**
- * host_start_message - mei host sends start message.
+ * mei_hbm_start_req - sends start request message.
*
* @dev: the device structure
- *
- * returns none.
*/
-void mei_host_start_message(struct mei_device *dev)
+void mei_hbm_start_req(struct mei_device *dev)
{
struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
struct hbm_host_version_request *start_req;
@@ -92,13 +90,13 @@ void mei_host_start_message(struct mei_device *dev)
}
/**
- * host_enum_clients_message - host sends enumeration client request message.
+ * mei_hbm_enum_clients_req - sends enumeration client request message.
*
* @dev: the device structure
*
* returns none.
*/
-void mei_host_enum_clients_message(struct mei_device *dev)
+static void mei_hbm_enum_clients_req(struct mei_device *dev)
{
struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
struct hbm_host_enum_request *enum_req;
@@ -120,8 +118,15 @@ void mei_host_enum_clients_message(struct mei_device *dev)
return;
}
+/**
+ * mei_hbm_prop_requsest - request property for a single client
+ *
+ * @dev: the device structure
+ *
+ * returns none.
+ */
-int mei_host_client_enumerate(struct mei_device *dev)
+static int mei_hbm_prop_req(struct mei_device *dev)
{
struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
@@ -191,14 +196,14 @@ static void mei_hbm_stop_req_prepare(struct mei_device *dev,
}
/**
- * mei_send_flow_control - sends flow control to fw.
+ * mei_hbm_cl_flow_control_req - sends flow control requst.
*
* @dev: the device structure
- * @cl: private data of the file object
+ * @cl: client info
*
* This function returns -EIO on write failure
*/
-int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl)
+int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl)
{
struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_flow_control);
@@ -213,14 +218,14 @@ int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl)
}
/**
- * mei_disconnect - sends disconnect message to fw.
+ * mei_hbm_cl_disconnect_req - sends disconnect message to fw.
*
* @dev: the device structure
- * @cl: private data of the file object
+ * @cl: a client to disconnect from
*
* This function returns -EIO on write failure
*/
-int mei_disconnect(struct mei_device *dev, struct mei_cl *cl)
+int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl)
{
struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_client_connect_request);
@@ -232,14 +237,14 @@ int mei_disconnect(struct mei_device *dev, struct mei_cl *cl)
}
/**
- * mei_connect - sends connect message to fw.
+ * mei_hbm_cl_connect_req - send connection request to specific me client
*
* @dev: the device structure
- * @cl: private data of the file object
+ * @cl: a client to connect to
*
- * This function returns -EIO on write failure
+ * returns -EIO on write failure
*/
-int mei_connect(struct mei_device *dev, struct mei_cl *cl)
+int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl)
{
struct mei_msg_hdr *mei_hdr = &dev->wr_msg.hdr;
const size_t len = sizeof(struct hbm_client_connect_request);
@@ -251,12 +256,13 @@ int mei_connect(struct mei_device *dev, struct mei_cl *cl)
}
/**
- * mei_client_disconnect_request - disconnects from request irq routine
+ * mei_client_disconnect_request - disconnect request initiated by me
+ * host sends disoconnect response
*
* @dev: the device structure.
- * @disconnect_req: disconnect request bus message.
+ * @disconnect_req: disconnect request bus message from the me
*/
-static void mei_client_disconnect_request(struct mei_device *dev,
+static void mei_hbm_fw_disconnect_req(struct mei_device *dev,
struct hbm_client_connect_request *disconnect_req)
{
struct mei_cl *cl, *next;
@@ -327,7 +333,7 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
dev->init_clients_state == MEI_START_MESSAGE) {
dev->init_clients_timer = 0;
- mei_host_enum_clients_message(dev);
+ mei_hbm_enum_clients_req(dev);
} else {
dev->recvd_msg = false;
dev_dbg(&dev->pdev->dev, "reset due to received hbm: host start\n");
@@ -390,7 +396,8 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
dev->me_client_index++;
dev->me_client_presentation_num++;
- mei_host_client_enumerate(dev);
+ /* request property for the next client */
+ mei_hbm_prop_req(dev);
break;
@@ -406,7 +413,8 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
dev->init_clients_state =
MEI_CLIENT_PROPERTIES_MESSAGE;
- mei_host_client_enumerate(dev);
+ /* first property reqeust */
+ mei_hbm_prop_req(dev);
} else {
dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n");
mei_reset(dev, 1);
@@ -423,7 +431,7 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
case CLIENT_DISCONNECT_REQ_CMD:
/* search for client */
disconnect_req = (struct hbm_client_connect_request *)mei_msg;
- mei_client_disconnect_request(dev, disconnect_req);
+ mei_hbm_fw_disconnect_req(dev, disconnect_req);
break;
case ME_STOP_REQ_CMD:
diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 0536170..418a85f 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -529,9 +529,9 @@ int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl)
cb->fop_type = MEI_FOP_CLOSE;
if (dev->mei_host_buffer_is_empty) {
dev->mei_host_buffer_is_empty = false;
- if (mei_disconnect(dev, cl)) {
+ if (mei_hbm_cl_disconnect_req(dev, cl)) {
rets = -ENODEV;
- dev_dbg(&dev->pdev->dev, "failed to call mei_disconnect.\n");
+ dev_err(&dev->pdev->dev, "failed to disconnect.\n");
goto free;
}
mdelay(10); /* Wait for hardware disconnection ready */
diff --git a/drivers/misc/mei/interface.h b/drivers/misc/mei/interface.h
index ca73299..90a3dfd 100644
--- a/drivers/misc/mei/interface.h
+++ b/drivers/misc/mei/interface.h
@@ -69,12 +69,15 @@ void mei_watchdog_register(struct mei_device *dev);
*/
void mei_watchdog_unregister(struct mei_device *dev);
+int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl);
int mei_flow_ctrl_reduce(struct mei_device *dev, struct mei_cl *cl);
-int mei_send_flow_control(struct mei_device *dev, struct mei_cl *cl);
+void mei_hbm_start_req(struct mei_device *dev);
-int mei_disconnect(struct mei_device *dev, struct mei_cl *cl);
-int mei_other_client_is_connecting(struct mei_device *dev, struct mei_cl *cl);
-int mei_connect(struct mei_device *dev, struct mei_cl *cl);
+int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl);
+int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl);
+int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl);
+
+void mei_host_client_init(struct work_struct *work);
#endif /* _MEI_INTERFACE_H_ */
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index 9cbf148..eb744cc 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -157,7 +157,7 @@ static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots,
*slots -= mei_data2slots(sizeof(struct hbm_client_connect_request));
- if (mei_disconnect(dev, cl)) {
+ if (mei_hbm_cl_disconnect_req(dev, cl)) {
cl->status = 0;
cb_pos->buf_idx = 0;
list_move_tail(&cb_pos->list, &cmpl_list->list);
@@ -407,7 +407,7 @@ static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
*slots -= mei_data2slots(sizeof(struct hbm_flow_control));
- if (mei_send_flow_control(dev, cl)) {
+ if (mei_hbm_cl_flow_control_req(dev, cl)) {
cl->status = -ENODEV;
cb_pos->buf_idx = 0;
list_move_tail(&cb_pos->list, &cmpl_list->list);
@@ -443,8 +443,8 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
}
cl->state = MEI_FILE_CONNECTING;
- *slots -= mei_data2slots(sizeof(struct hbm_client_connect_request));
- if (mei_connect(dev, cl)) {
+ *slots -= mei_data2slots(sizeof(struct hbm_client_connect_request));
+ if (mei_hbm_cl_connect_req(dev, cl)) {
cl->status = -ENODEV;
cb_pos->buf_idx = 0;
list_del(&cb_pos->list);
@@ -927,7 +927,7 @@ irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id)
/* link is established
* start sending messages.
*/
- mei_host_start_message(dev);
+ mei_hbm_start_req(dev);
mutex_unlock(&dev->device_lock);
return IRQ_HANDLED;
} else {
diff --git a/drivers/misc/mei/iorw.c b/drivers/misc/mei/iorw.c
index 7ccc3d8..d8e08bc 100644
--- a/drivers/misc/mei/iorw.c
+++ b/drivers/misc/mei/iorw.c
@@ -258,7 +258,7 @@ int mei_ioctl_connect_client(struct file *file,
&& !mei_other_client_is_connecting(dev, cl)) {
dev_dbg(&dev->pdev->dev, "Sending Connect Message\n");
dev->mei_host_buffer_is_empty = false;
- if (mei_connect(dev, cl)) {
+ if (mei_hbm_cl_connect_req(dev, cl)) {
dev_dbg(&dev->pdev->dev, "Sending connect message - failed\n");
rets = -ENODEV;
goto end;
@@ -350,7 +350,7 @@ int mei_start_read(struct mei_device *dev, struct mei_cl *cl)
cl->read_cb = cb;
if (dev->mei_host_buffer_is_empty) {
dev->mei_host_buffer_is_empty = false;
- if (mei_send_flow_control(dev, cl)) {
+ if (mei_hbm_cl_flow_control_req(dev, cl)) {
rets = -ENODEV;
goto err;
}
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 1017e54..3da92c7 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -383,15 +383,6 @@ static inline bool mei_cl_cmp_id(const struct mei_cl *cl1,
}
-
-/*
- * MEI Host Client Functions
- */
-void mei_host_start_message(struct mei_device *dev);
-void mei_host_enum_clients_message(struct mei_device *dev);
-int mei_host_client_enumerate(struct mei_device *dev);
-void mei_host_client_init(struct work_struct *work);
-
/*
* MEI interrupt functions prototype
*/
diff --git a/drivers/misc/mei/wd.c b/drivers/misc/mei/wd.c
index 9851de4..3c5b2b0 100644
--- a/drivers/misc/mei/wd.c
+++ b/drivers/misc/mei/wd.c
@@ -79,7 +79,7 @@ int mei_wd_host_init(struct mei_device *dev)
return -ENOENT;
}
- if (mei_connect(dev, &dev->wd_cl)) {
+ if (mei_hbm_cl_connect_req(dev, &dev->wd_cl)) {
dev_err(&dev->pdev->dev, "wd: failed to connect to the client\n");
dev->wd_cl.state = MEI_FILE_DISCONNECTED;
dev->wd_cl.host_client_id = 0;
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread* [char-misc-next 15/15] mei: move hbm responses from interrupt.c to hbm.c
2012-12-04 14:04 [char-misc-next 01/15] mei: drop redundant length paramter from mei_write_message function Tomas Winkler
` (12 preceding siblings ...)
2012-12-04 14:04 ` [char-misc-next 14/15] mei: add common prefix to hbm function Tomas Winkler
@ 2012-12-04 14:04 ` Tomas Winkler
13 siblings, 0 replies; 20+ messages in thread
From: Tomas Winkler @ 2012-12-04 14:04 UTC (permalink / raw)
To: gregkh; +Cc: arnd, alan, linux-kernel, Tomas Winkler
add common prefix mei_hbm_ to all handlers
and made them static
drop now useless function same_flow_addr
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
drivers/misc/mei/hbm.c | 189 +++++++++++++++++++++++++++++++++++++-
drivers/misc/mei/interrupt.c | 208 ------------------------------------------
drivers/misc/mei/mei_dev.h | 9 --
3 files changed, 186 insertions(+), 220 deletions(-)
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 3c99140..6b58b0a 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -59,6 +59,33 @@ bool mei_hbm_cl_addr_equal(struct mei_cl *cl, void *buf)
/**
+ * is_treat_specially_client - checks if the message belongs
+ * to the file private data.
+ *
+ * @cl: private data of the file object
+ * @rs: connect response bus message
+ *
+ */
+static bool is_treat_specially_client(struct mei_cl *cl,
+ struct hbm_client_connect_response *rs)
+{
+ if (mei_hbm_cl_addr_equal(cl, rs)) {
+ if (!rs->status) {
+ cl->state = MEI_FILE_CONNECTED;
+ cl->status = 0;
+
+ } else {
+ cl->state = MEI_FILE_DISCONNECTED;
+ cl->status = -ENODEV;
+ }
+ cl->timer_count = 0;
+
+ return true;
+ }
+ return false;
+}
+
+/**
* mei_hbm_start_req - sends start request message.
*
* @dev: the device structure
@@ -218,6 +245,66 @@ int mei_hbm_cl_flow_control_req(struct mei_device *dev, struct mei_cl *cl)
}
/**
+ * add_single_flow_creds - adds single buffer credentials.
+ *
+ * @file: private data ot the file object.
+ * @flow: flow control.
+ */
+static void mei_hbm_add_single_flow_creds(struct mei_device *dev,
+ struct hbm_flow_control *flow)
+{
+ struct mei_me_client *client;
+ int i;
+
+ for (i = 0; i < dev->me_clients_num; i++) {
+ client = &dev->me_clients[i];
+ if (client && flow->me_addr == client->client_id) {
+ if (client->props.single_recv_buf) {
+ client->mei_flow_ctrl_creds++;
+ dev_dbg(&dev->pdev->dev, "recv flow ctrl msg ME %d (single).\n",
+ flow->me_addr);
+ dev_dbg(&dev->pdev->dev, "flow control credentials =%d.\n",
+ client->mei_flow_ctrl_creds);
+ } else {
+ BUG(); /* error in flow control */
+ }
+ }
+ }
+}
+
+/**
+ * mei_hbm_cl_flow_control_res - flow control response from me
+ *
+ * @dev: the device structure
+ * @flow_control: flow control response bus message
+ */
+static void mei_hbm_cl_flow_control_res(struct mei_device *dev,
+ struct hbm_flow_control *flow_control)
+{
+ struct mei_cl *cl = NULL;
+ struct mei_cl *next = NULL;
+
+ if (!flow_control->host_addr) {
+ /* single receive buffer */
+ mei_hbm_add_single_flow_creds(dev, flow_control);
+ return;
+ }
+
+ /* normal connection */
+ list_for_each_entry_safe(cl, next, &dev->file_list, link) {
+ if (mei_hbm_cl_addr_equal(cl, flow_control)) {
+ cl->mei_flow_ctrl_creds++;
+ dev_dbg(&dev->pdev->dev, "flow ctrl msg for host %d ME %d.\n",
+ flow_control->host_addr, flow_control->me_addr);
+ dev_dbg(&dev->pdev->dev, "flow control credentials = %d.\n",
+ cl->mei_flow_ctrl_creds);
+ break;
+ }
+ }
+}
+
+
+/**
* mei_hbm_cl_disconnect_req - sends disconnect message to fw.
*
* @dev: the device structure
@@ -237,6 +324,48 @@ int mei_hbm_cl_disconnect_req(struct mei_device *dev, struct mei_cl *cl)
}
/**
+ * mei_hbm_cl_disconnect_res - disconnect response from ME
+ *
+ * @dev: the device structure
+ * @rs: disconnect response bus message
+ */
+static void mei_hbm_cl_disconnect_res(struct mei_device *dev,
+ struct hbm_client_connect_response *rs)
+{
+ struct mei_cl *cl;
+ struct mei_cl_cb *pos = NULL, *next = NULL;
+
+ dev_dbg(&dev->pdev->dev,
+ "disconnect_response:\n"
+ "ME Client = %d\n"
+ "Host Client = %d\n"
+ "Status = %d\n",
+ rs->me_addr,
+ rs->host_addr,
+ rs->status);
+
+ list_for_each_entry_safe(pos, next, &dev->ctrl_rd_list.list, list) {
+ cl = pos->cl;
+
+ if (!cl) {
+ list_del(&pos->list);
+ return;
+ }
+
+ dev_dbg(&dev->pdev->dev, "list_for_each_entry_safe in ctrl_rd_list.\n");
+ if (mei_hbm_cl_addr_equal(cl, rs)) {
+ list_del(&pos->list);
+ if (!rs->status)
+ cl->state = MEI_FILE_DISCONNECTED;
+
+ cl->status = 0;
+ cl->timer_count = 0;
+ break;
+ }
+ }
+}
+
+/**
* mei_hbm_cl_connect_req - send connection request to specific me client
*
* @dev: the device structure
@@ -256,6 +385,60 @@ int mei_hbm_cl_connect_req(struct mei_device *dev, struct mei_cl *cl)
}
/**
+ * mei_hbm_cl_connect_res - connect resposne from the ME
+ *
+ * @dev: the device structure
+ * @rs: connect response bus message
+ */
+static void mei_hbm_cl_connect_res(struct mei_device *dev,
+ struct hbm_client_connect_response *rs)
+{
+
+ struct mei_cl *cl;
+ struct mei_cl_cb *pos = NULL, *next = NULL;
+
+ dev_dbg(&dev->pdev->dev,
+ "connect_response:\n"
+ "ME Client = %d\n"
+ "Host Client = %d\n"
+ "Status = %d\n",
+ rs->me_addr,
+ rs->host_addr,
+ rs->status);
+
+ /* if WD or iamthif client treat specially */
+
+ if (is_treat_specially_client(&dev->wd_cl, rs)) {
+ dev_dbg(&dev->pdev->dev, "successfully connected to WD client.\n");
+ mei_watchdog_register(dev);
+
+ return;
+ }
+
+ if (is_treat_specially_client(&dev->iamthif_cl, rs)) {
+ dev->iamthif_state = MEI_IAMTHIF_IDLE;
+ return;
+ }
+ list_for_each_entry_safe(pos, next, &dev->ctrl_rd_list.list, list) {
+
+ cl = pos->cl;
+ if (!cl) {
+ list_del(&pos->list);
+ return;
+ }
+ if (pos->fop_type == MEI_FOP_IOCTL) {
+ if (is_treat_specially_client(cl, rs)) {
+ list_del(&pos->list);
+ cl->status = 0;
+ cl->timer_count = 0;
+ break;
+ }
+ }
+ }
+}
+
+
+/**
* mei_client_disconnect_request - disconnect request initiated by me
* host sends disoconnect response
*
@@ -347,21 +530,21 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
case CLIENT_CONNECT_RES_CMD:
connect_res = (struct hbm_client_connect_response *) mei_msg;
- mei_client_connect_response(dev, connect_res);
+ mei_hbm_cl_connect_res(dev, connect_res);
dev_dbg(&dev->pdev->dev, "client connect response message received.\n");
wake_up(&dev->wait_recvd_msg);
break;
case CLIENT_DISCONNECT_RES_CMD:
disconnect_res = (struct hbm_client_connect_response *) mei_msg;
- mei_client_disconnect_response(dev, disconnect_res);
+ mei_hbm_cl_disconnect_res(dev, disconnect_res);
dev_dbg(&dev->pdev->dev, "client disconnect response message received.\n");
wake_up(&dev->wait_recvd_msg);
break;
case MEI_FLOW_CONTROL_CMD:
flow_control = (struct hbm_flow_control *) mei_msg;
- mei_client_flow_control_response(dev, flow_control);
+ mei_hbm_cl_flow_control_res(dev, flow_control);
dev_dbg(&dev->pdev->dev, "client flow control response message received.\n");
break;
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index eb744cc..a735c8b 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -173,214 +173,6 @@ static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots,
return 0;
}
-/**
- * is_treat_specially_client - checks if the message belongs
- * to the file private data.
- *
- * @cl: private data of the file object
- * @rs: connect response bus message
- *
- */
-static bool is_treat_specially_client(struct mei_cl *cl,
- struct hbm_client_connect_response *rs)
-{
-
- if (cl->host_client_id == rs->host_addr &&
- cl->me_client_id == rs->me_addr) {
- if (!rs->status) {
- cl->state = MEI_FILE_CONNECTED;
- cl->status = 0;
-
- } else {
- cl->state = MEI_FILE_DISCONNECTED;
- cl->status = -ENODEV;
- }
- cl->timer_count = 0;
-
- return true;
- }
- return false;
-}
-
-/**
- * mei_client_connect_response - connects to response irq routine
- *
- * @dev: the device structure
- * @rs: connect response bus message
- */
-void mei_client_connect_response(struct mei_device *dev,
- struct hbm_client_connect_response *rs)
-{
-
- struct mei_cl *cl;
- struct mei_cl_cb *pos = NULL, *next = NULL;
-
- dev_dbg(&dev->pdev->dev,
- "connect_response:\n"
- "ME Client = %d\n"
- "Host Client = %d\n"
- "Status = %d\n",
- rs->me_addr,
- rs->host_addr,
- rs->status);
-
- /* if WD or iamthif client treat specially */
-
- if (is_treat_specially_client(&(dev->wd_cl), rs)) {
- dev_dbg(&dev->pdev->dev, "successfully connected to WD client.\n");
- mei_watchdog_register(dev);
-
- return;
- }
-
- if (is_treat_specially_client(&(dev->iamthif_cl), rs)) {
- dev->iamthif_state = MEI_IAMTHIF_IDLE;
- return;
- }
- list_for_each_entry_safe(pos, next, &dev->ctrl_rd_list.list, list) {
-
- cl = pos->cl;
- if (!cl) {
- list_del(&pos->list);
- return;
- }
- if (pos->fop_type == MEI_FOP_IOCTL) {
- if (is_treat_specially_client(cl, rs)) {
- list_del(&pos->list);
- cl->status = 0;
- cl->timer_count = 0;
- break;
- }
- }
- }
-}
-
-/**
- * mei_client_disconnect_response - disconnects from response irq routine
- *
- * @dev: the device structure
- * @rs: disconnect response bus message
- */
-void mei_client_disconnect_response(struct mei_device *dev,
- struct hbm_client_connect_response *rs)
-{
- struct mei_cl *cl;
- struct mei_cl_cb *pos = NULL, *next = NULL;
-
- dev_dbg(&dev->pdev->dev,
- "disconnect_response:\n"
- "ME Client = %d\n"
- "Host Client = %d\n"
- "Status = %d\n",
- rs->me_addr,
- rs->host_addr,
- rs->status);
-
- list_for_each_entry_safe(pos, next, &dev->ctrl_rd_list.list, list) {
- cl = pos->cl;
-
- if (!cl) {
- list_del(&pos->list);
- return;
- }
-
- dev_dbg(&dev->pdev->dev, "list_for_each_entry_safe in ctrl_rd_list.\n");
- if (cl->host_client_id == rs->host_addr &&
- cl->me_client_id == rs->me_addr) {
-
- list_del(&pos->list);
- if (!rs->status)
- cl->state = MEI_FILE_DISCONNECTED;
-
- cl->status = 0;
- cl->timer_count = 0;
- break;
- }
- }
-}
-
-/**
- * same_flow_addr - tells if they have the same address.
- *
- * @file: private data of the file object.
- * @flow: flow control.
- *
- * returns !=0, same; 0,not.
- */
-static int same_flow_addr(struct mei_cl *cl, struct hbm_flow_control *flow)
-{
- return (cl->host_client_id == flow->host_addr &&
- cl->me_client_id == flow->me_addr);
-}
-
-/**
- * add_single_flow_creds - adds single buffer credentials.
- *
- * @file: private data ot the file object.
- * @flow: flow control.
- */
-static void add_single_flow_creds(struct mei_device *dev,
- struct hbm_flow_control *flow)
-{
- struct mei_me_client *client;
- int i;
-
- for (i = 0; i < dev->me_clients_num; i++) {
- client = &dev->me_clients[i];
- if (client && flow->me_addr == client->client_id) {
- if (client->props.single_recv_buf) {
- client->mei_flow_ctrl_creds++;
- dev_dbg(&dev->pdev->dev, "recv flow ctrl msg ME %d (single).\n",
- flow->me_addr);
- dev_dbg(&dev->pdev->dev, "flow control credentials =%d.\n",
- client->mei_flow_ctrl_creds);
- } else {
- BUG(); /* error in flow control */
- }
- }
- }
-}
-
-/**
- * mei_client_flow_control_response - flow control response irq routine
- *
- * @dev: the device structure
- * @flow_control: flow control response bus message
- */
-void mei_client_flow_control_response(struct mei_device *dev,
- struct hbm_flow_control *flow_control)
-{
- struct mei_cl *cl_pos = NULL;
- struct mei_cl *cl_next = NULL;
-
- if (!flow_control->host_addr) {
- /* single receive buffer */
- add_single_flow_creds(dev, flow_control);
- } else {
- /* normal connection */
- list_for_each_entry_safe(cl_pos, cl_next,
- &dev->file_list, link) {
- dev_dbg(&dev->pdev->dev, "list_for_each_entry_safe in file_list\n");
-
- dev_dbg(&dev->pdev->dev, "cl of host client %d ME client %d.\n",
- cl_pos->host_client_id,
- cl_pos->me_client_id);
- dev_dbg(&dev->pdev->dev, "flow ctrl msg for host %d ME %d.\n",
- flow_control->host_addr,
- flow_control->me_addr);
- if (same_flow_addr(cl_pos, flow_control)) {
- dev_dbg(&dev->pdev->dev, "recv ctrl msg for host %d ME %d.\n",
- flow_control->host_addr,
- flow_control->me_addr);
- cl_pos->mei_flow_ctrl_creds++;
- dev_dbg(&dev->pdev->dev, "flow control credentials = %d.\n",
- cl_pos->mei_flow_ctrl_creds);
- break;
- }
- }
- }
-}
-
/**
* _mei_hb_read - processes read related operation.
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 3da92c7..13ddab8 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -398,15 +398,6 @@ int mei_ioctl_connect_client(struct file *file,
int mei_start_read(struct mei_device *dev, struct mei_cl *cl);
-
-void mei_client_disconnect_response(struct mei_device *dev,
- struct hbm_client_connect_response *rs);
-
-void mei_client_connect_response(struct mei_device *dev,
- struct hbm_client_connect_response *rs);
-
-void mei_client_flow_control_response(struct mei_device *dev,
- struct hbm_flow_control *flow_control);
/*
* AMTHIF - AMT Host Interface Functions
*/
--
1.7.4.4
^ permalink raw reply related [flat|nested] 20+ messages in thread