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Date: Wed, 13 Apr 2011 14:56:07 -0700
From: Randy Dunlap <randy.dunlap@...cle.com>
To: "Mark A. Allyn" <mark.a.allyn@...el.com>
Cc: linux-kernel@...r.kernel.org, greg@...ah.com, alan@...ux.intel.com,
jayant.mangalampalli@...el.com, venkat.r.gokulrangan@...el.com
Subject: Re: Re-send (What else needs to be done to the sep driver
(staging/sep))
On Wed, 13 Apr 2011 14:29:35 -0700 (PDT) Mark A. Allyn wrote:
> Sorry, I had an incorrect return address config in alpine. . .
>
> What else needs to be done to the sep driver in order for it to be moved
> to the kernel from staging?
1. It's usually better for loops like this to have some hw-independent escape,
like a timeout or iteration counter exit.
static inline void sep_wait_sram_write(struct sep_device *dev)
{
u32 reg_val;
do {
reg_val = sep_read_reg(dev, HW_SRAM_DATA_READY_REG_ADDR);
} while (!(reg_val & 1));
}
2. Update Documentation/ioctl/ioctl-number.txt based on sep_driver_api.h.
and apply the following cleanup patch (I have not looked at sep_driver.c yet).
---
From: Randy Dunlap <randy.dunlap@...cle.com>
sep_driver cleanups: fix some coding style & typos.
Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
---
drivers/staging/sep/Kconfig | 2 -
drivers/staging/sep/Makefile | 1
drivers/staging/sep/TODO | 2 -
drivers/staging/sep/sep_dev.h | 3 --
drivers/staging/sep/sep_driver_api.h | 26 ++++++++-------------
drivers/staging/sep/sep_driver_config.h | 26 ++++++++-------------
drivers/staging/sep/sep_driver_hw_defs.h | 1
7 files changed, 25 insertions(+), 36 deletions(-)
--- linux-next-20110413.orig/drivers/staging/sep/Kconfig
+++ linux-next-20110413/drivers/staging/sep/Kconfig
@@ -3,7 +3,7 @@ config DX_SEP
depends on PCI
help
Discretix SEP driver; used for the security processor subsystem
- on bard the Intel Mobile Internet Device.
+ on board the Intel Mobile Internet Device.
The driver's name is sep_driver.
--- linux-next-20110413.orig/drivers/staging/sep/Makefile
+++ linux-next-20110413/drivers/staging/sep/Makefile
@@ -1,2 +1 @@
obj-$(CONFIG_DX_SEP) := sep_driver.o
-
--- linux-next-20110413.orig/drivers/staging/sep/TODO
+++ linux-next-20110413/drivers/staging/sep/TODO
@@ -1,4 +1,4 @@
Todo's so far (from Alan Cox)
- Check whether it can be plugged into any of the kernel crypto API
interfaces - Crypto API 'glue' is still not ready to submit
-- Clean up un-needed debug prints - Started to work on this
+- Clean up unneeded debug prints - Started to work on this
--- linux-next-20110413.orig/drivers/staging/sep/sep_dev.h
+++ linux-next-20110413/drivers/staging/sep/sep_dev.h
@@ -103,7 +103,6 @@ struct sep_device {
u32 nr_dcb_creat;
struct sep_dma_resource dma_res_arr[SEP_MAX_NUM_SYNC_DMA_OPS];
-
};
static inline void sep_write_reg(struct sep_device *dev, int reg, u32 value)
@@ -118,7 +117,7 @@ static inline u32 sep_read_reg(struct se
return readl(addr);
}
-/* wait for SRAM write complete(indirect write */
+/* wait for SRAM write complete (indirect write) */
static inline void sep_wait_sram_write(struct sep_device *dev)
{
u32 reg_val;
--- linux-next-20110413.orig/drivers/staging/sep/sep_driver_api.h
+++ linux-next-20110413/drivers/staging/sep/sep_driver_api.h
@@ -38,10 +38,6 @@
#define SEP_DRIVER_SRC_PRINTF 3
-/*-------------------------------------------
- TYPEDEFS
-----------------------------------------------*/
-
struct alloc_struct {
/* offset from start of shared pool area */
u32 offset;
@@ -60,8 +56,8 @@ struct caller_id_struct {
};
/*
- structure that represents DCB
-*/
+ * structure that represents DCB
+ */
struct sep_dcblock {
/* physical address of the first input mlli */
u32 input_mlli_address;
@@ -89,8 +85,8 @@ struct sep_caller_id_entry {
};
/*
- command structure for building dcb block (currently for ext app only
-*/
+ * command structure for building dcb block (currently for ext app only)
+ */
struct build_dcb_struct {
/* address value of the data in */
aligned_u64 app_in_address;
@@ -106,13 +102,11 @@ struct build_dcb_struct {
u32 tail_block_size;
};
-/**
+/*
* @struct sep_dma_map
*
* Structure that contains all information needed for mapping the user pages
* or kernel buffers for dma operations
- *
- *
*/
struct sep_dma_map {
/* mapped dma address */
@@ -150,8 +144,10 @@ struct sep_dma_resource {
};
-/* command struct for translating rar handle to bus address
- and setting it at predefined location */
+/*
+ * command struct for translating rar handle to bus address
+ * and setting it at predefined location
+ */
struct rar_hndl_to_bus_struct {
/* rar handle */
@@ -159,8 +155,8 @@ struct rar_hndl_to_bus_struct {
};
/*
- structure that represent one entry in the DMA LLI table
-*/
+ * structure that represent one entry in the DMA LLI table
+ */
struct sep_lli_entry {
/* physical address */
u32 bus_address;
--- linux-next-20110413.orig/drivers/staging/sep/sep_driver_config.h
+++ linux-next-20110413/drivers/staging/sep/sep_driver_config.h
@@ -33,9 +33,7 @@
#define __SEP_DRIVER_CONFIG_H__
-/*--------------------------------------
- DRIVER CONFIGURATION FLAGS
- -------------------------------------*/
+/* DRIVER CONFIGURATION FLAGS */
/* if flag is on , then the driver is running in polling and
not interrupt mode */
@@ -48,9 +46,7 @@
/* the mode for running on the ARM1172 Evaluation platform (flag is 1) */
#define SEP_DRIVER_ARM_DEBUG_MODE 0
-/*-------------------------------------------
- INTERNAL DATA CONFIGURATION
- -------------------------------------------*/
+/* INTERNAL DATA CONFIGURATION */
/* flag for the input array */
#define SEP_DRIVER_IN_FLAG 0
@@ -64,11 +60,11 @@
/* minimum data size of the MLLI table */
#define SEP_DRIVER_MIN_DATA_SIZE_PER_TABLE 16
-/* flag that signifies tah the lock is
+/* flag that signifies that the lock is
currently held by the process (struct file) */
#define SEP_DRIVER_OWN_LOCK_FLAG 1
-/* flag that signifies tah the lock is currently NOT
+/* flag that signifies that the lock is currently NOT
held by the process (struct file) */
#define SEP_DRIVER_DISOWN_LOCK_FLAG 0
@@ -109,9 +105,9 @@ held by the process (struct file) */
/*
- the maximum length of the message - the rest of the message shared
- area will be dedicated to the dma lli tables
-*/
+ * the maximum length of the message - the rest of the message shared
+ *area will be dedicated to the dma lli tables
+ */
#define SEP_DRIVER_MAX_MESSAGE_SIZE_IN_BYTES (8 * 1024)
/* the size of the message shared area in pages */
@@ -142,9 +138,9 @@ held by the process (struct file) */
DATA POOL areas. area must be module 4k */
#define SEP_DRIVER_MMMAP_AREA_SIZE (1024 * 28)
-/*-----------------------------------------------
- offsets of the areas starting from the shared area start address
-*/
+/*
+ * offsets of the areas starting from the shared area start address
+ */
/* message area offset */
#define SEP_DRIVER_MESSAGE_AREA_OFFSET_IN_BYTES 0
@@ -205,7 +201,7 @@ held by the process (struct file) */
/* size of the caller id hash (sha2) */
#define SEP_CALLER_ID_HASH_SIZE_IN_BYTES 32
-/* size of the caller id hash (sha2) in 32 bit words */
+/* size of the caller id hash (sha2) in 32-bit words */
#define SEP_CALLER_ID_HASH_SIZE_IN_WORDS 8
/* maximum number of entries in the caller id table */
--- linux-next-20110413.orig/drivers/staging/sep/sep_driver_hw_defs.h
+++ linux-next-20110413/drivers/staging/sep/sep_driver_hw_defs.h
@@ -37,7 +37,6 @@
/*----------------------- */
/* HW Registers Defines. */
-/* */
/*---------------------- -*/
--
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