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Re: [PATCH net-next-2.6 v4] can: Topcliff: PCH_CAN driver: Add Flow control/Fix Endianess issue/Separate IF register/Enumerate LEC macro/Move MSI processing/Use BIT(X)/Change Message Object index/Add prefix PCH_
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From: Wolfgang Grandegger
Subject:
Re: [PATCH net-next-2.6 v4] can: Topcliff: PCH_CAN driver: Add Flow control/Fix Endianess issue/Separate IF register/Enumerate LEC macro/Move MSI processing/Use BIT(X)/Change Message Object index/Add prefix PCH_
Date: Tuesday, November 16, 2010 - 5:22 am
On 11/16/2010 01:14 PM, Tomoya MORINAGA wrote:
quoted text
> Add flow control processing. > Currently, there is no flow control processing. > Thus, Add flow control processing as > when there is no empty of tx buffer, > netif_stop_queue is called. > When there is empty buffer, netif_wake_queue is called. > > > Fix endianness issue. > there is endianness issue both Tx and Rx. > Currently, data is set like below. > Register: > MSB---LSB > x x D0 D1 > x x D2 D3 > x x D4 D5 > x x D6 D7 > > But Data to be sent must be set like below. > Register: > MSB---LSB > x x D1 D0 > x x D3 D2 > x x D5 D4 > x x D7 D6 (x means reserved area.) > > > Separate interface register from whole of register structure. > CAN register of Intel PCH EG20T has 2 sets of interface register. > To reduce whole of code size, separate interface register. > As a result, the number of function also can be reduced. > > > Enumerate LEC macro from #define macro. > For easy to readable, all LEC #define macros are replease to enums like below. > enum pch_can_err { > PCH_STUF_ERR = 1, > PCH_FORM_ERR, > PCH_ACK_ERR, > PCH_BIT1_ERR, > PCH_BIT0_ERR, > PCH_CRC_ERR, > PCH_LEC_ALL, > }; > > > Move MSI processing to probe/remove processing. > Currently, in case this driver is integrated as module, and > when this module is re-installed, no interrupts is to be occurred. > For the above issue, move MSI processing to open/release processing. > > > Replace bit assignment value to BIT(X). > For easy to readable, replace all bit assigned macros to BIT(X) > > > Change Message Object index macro name. > For easy to readable, add Message Object index like below. > PCH_RX_OBJ_START > PCH_RX_OBJ_END > PCH_TX_OBJ_START > PCH_TX_OBJ_END > > > Add prefix PCH_ to all of #define macros. > For easy to readable, add prefix "PCH_" to all of #define macros. > > > > Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Acked-by: Wolfgang Grandegger <wg@grandegger.com> Thanks for your contribution. Wolfgang. --
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Messages in current thread:
[PATCH net-next-2.6 v4] can: Topcliff: PCH_CAN driver: Add ...
, Tomoya MORINAGA
, (Tue Nov 16, 5:14 am)
Re: [PATCH net-next-2.6 v4] can: Topcliff: PCH_CAN driver: ...
, Wolfgang Grandegger
, (Tue Nov 16, 5:22 am)
Re: [PATCH net-next-2.6 v4] can: Topcliff: PCH_CAN driver: ...
, David Miller
, (Tue Nov 16, 10:14 am)
Re: [PATCH net-next-2.6 v4] can: Topcliff: PCH_CAN driver: ...
, Wolfgang Grandegger
, (Tue Nov 16, 1:39 pm)
Re: [PATCH net-next-2.6 v4] can: Topcliff: PCH_CAN driver: ...
, David Miller
, (Tue Nov 16, 1:43 pm)