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// vim:tw=110:ts=4:
/************************************************************************************************************
*
* FILE : HCF.C
*
* DATE : $Date: 2004/08/05 11:47:10 $ $Revision: 1.10 $
* Original: 2004/06/02 10:22:22 Revision: 1.85 Tag: hcf7_t20040602_01
* Original: 2004/04/15 09:24:41 Revision: 1.63 Tag: hcf7_t7_20040415_01
* Original: 2004/04/13 14:22:44 Revision: 1.62 Tag: t7_20040413_01
* Original: 2004/04/01 15:32:55 Revision: 1.59 Tag: t7_20040401_01
* Original: 2004/03/10 15:39:27 Revision: 1.55 Tag: t20040310_01
* Original: 2004/03/04 11:03:37 Revision: 1.53 Tag: t20040304_01
* Original: 2004/03/02 14:51:21 Revision: 1.50 Tag: t20040302_03
* Original: 2004/02/24 13:00:27 Revision: 1.43 Tag: t20040224_01
* Original: 2004/02/19 10:57:25 Revision: 1.39 Tag: t20040219_01
*
* AUTHOR : Nico Valster
*
* SPECIFICATION: ........
*
* DESCRIPTION : HCF Routines for Hermes-II (callable via the Wireless Connection I/F or WCI)
* Local Support Routines for above procedures
*
* Customizable via HCFCFG.H, which is included by HCF.H
*
*************************************************************************************************************
*
*
* SOFTWARE LICENSE
*
* This software is provided subject to the following terms and conditions,
* which you should read carefully before using the software. Using this
* software indicates your acceptance of these terms and conditions. If you do
* not agree with these terms and conditions, do not use the software.
*
* COPYRIGHT © 1994 - 1995 by AT&T. All Rights Reserved
* COPYRIGHT © 1996 - 2000 by Lucent Technologies. All Rights Reserved
* COPYRIGHT © 2001 - 2004 by Agere Systems Inc. All Rights Reserved
* All rights reserved.
*
* Redistribution and use in source or binary forms, with or without
* modifications, are permitted provided that the following conditions are met:
*
* . Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following Disclaimer as comments in the code as
* well as in the documentation and/or other materials provided with the
* distribution.
*
* . Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following Disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* . Neither the name of Agere Systems Inc. nor the names of the contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Disclaimer
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY
* USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
* RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
*
************************************************************************************************************/
/************************************************************************************************************
**
** Implementation Notes
**
* - a leading marker of //! is used. The purpose of such a sequence is to help to understand the flow
* An example is: //!rc = HCF_SUCCESS;
* if this is superfluous because rc is already guaranteed to be 0 but it shows to the (maintenance)
* programmer it is an intentional omission at the place where someone could consider it most appropriate at
* first glance
* - using near pointers in a model where ss!=ds is an invitation for disaster, so be aware of how you specify
* your model and how you define variables which are used at interrupt time
* - remember that sign extension on 32 bit platforms may cause problems unless code is carefully constructed,
* e.g. use "(hcf_16)~foo" rather than "~foo"
*
************************************************************************************************************/
#include "hcf.h" // HCF and MSF common include file
#include "hcfdef.h" // HCF specific include file
#include "mmd.h" // MoreModularDriver common include file
#if ! defined offsetof
#define offsetof(s,m) ((unsigned int)&(((s *)0)->m))
#endif // offsetof
/***********************************************************************************************************/
/*************************************** PROTOTYPES ******************************************************/
/***********************************************************************************************************/
HCF_STATIC int cmd_exe( IFBP ifbp, hcf_16 cmd_code, hcf_16 par_0 );
HCF_STATIC int init( IFBP ifbp );
HCF_STATIC int put_info( IFBP ifbp, LTVP ltvp );
#if (HCF_EXT) & HCF_EXT_MB
HCF_STATIC int put_info_mb( IFBP ifbp, CFG_MB_INFO_STRCT FAR * ltvp );
#endif // HCF_EXT_MB
#if (HCF_TYPE) & HCF_TYPE_WPA
HCF_STATIC void calc_mic( hcf_32* p, hcf_32 M );
void calc_mic_rx_frag( IFBP ifbp, wci_bufp p, int len );
void calc_mic_tx_frag( IFBP ifbp, wci_bufp p, int len );
HCF_STATIC int check_mic( IFBP ifbp );
#endif // HCF_TYPE_WPA
HCF_STATIC void calibrate( IFBP ifbp );
HCF_STATIC int cmd_cmpl( IFBP ifbp );
HCF_STATIC hcf_16 get_fid( IFBP ifbp );
HCF_STATIC void isr_info( IFBP ifbp );
#if HCF_DMA
HCF_STATIC DESC_STRCT* get_frame_lst(IFBP ifbp, int tx_rx_flag);
#endif // HCF_DMA
HCF_STATIC void get_frag( IFBP ifbp, wci_bufp bufp, int len BE_PAR( int word_len ) ); //char*, byte count (usually even)
#if HCF_DMA
HCF_STATIC void put_frame_lst( IFBP ifbp, DESC_STRCT *descp, int tx_rx_flag );
#endif // HCF_DMA
HCF_STATIC void put_frag( IFBP ifbp, wci_bufp bufp, int len BE_PAR( int word_len ) );
HCF_STATIC void put_frag_finalize( IFBP ifbp );
HCF_STATIC int setup_bap( IFBP ifbp, hcf_16 fid, int offset, int type );
#if (HCF_ASSERT) & HCF_ASSERT_PRINTF
static int fw_printf(IFBP ifbp, CFG_FW_PRINTF_STRCT FAR *ltvp);
#endif // HCF_ASSERT_PRINTF
HCF_STATIC int download( IFBP ifbp, CFG_PROG_STRCT FAR *ltvp );
#if (HCF_ENCAP) & HCF_ENC
HCF_STATIC hcf_8 hcf_encap( wci_bufp type );
#endif // HCF_ENCAP
HCF_STATIC hcf_8 null_addr[4] = { 0, 0, 0, 0 };
#if ! defined IN_PORT_WORD //replace I/O Macros with logging facility
extern FILE *log_file;
#define IN_PORT_WORD(port) in_port_word( (hcf_io)(port) )
static hcf_16 in_port_word( hcf_io port ) {
hcf_16 i = (hcf_16)_inpw( port );
if ( log_file ) {
fprintf( log_file, "\nR %2.2x %4.4x", (port)&0xFF, i);
}
return i;
} // in_port_word
#define OUT_PORT_WORD(port, value) out_port_word( (hcf_io)(port), (hcf_16)(value) )
static void out_port_word( hcf_io port, hcf_16 value ) {
_outpw( port, value );
if ( log_file ) {
fprintf( log_file, "\nW %2.02x %4.04x", (port)&0xFF, value );
}
}
void IN_PORT_STRING_32( hcf_io prt, hcf_32 FAR * dst, int n) {
int i = 0;
hcf_16 FAR * p;
if ( log_file ) {
fprintf( log_file, "\nread string_32 length %04x (%04d) at port %02.2x to addr %lp",
(hcf_16)n, (hcf_16)n, (hcf_16)(prt)&0xFF, dst);
}
while ( n-- ) {
p = (hcf_16 FAR *)dst;
*p++ = (hcf_16)_inpw( prt );
*p = (hcf_16)_inpw( prt );
if ( log_file ) {
fprintf( log_file, "%s%08lx ", i++ % 0x08 ? " " : "\n", *dst);
}
dst++;
}
} // IN_PORT_STRING_32
void IN_PORT_STRING_8_16( hcf_io prt, hcf_8 FAR * dst, int n) { //also handles byte alignment problems
hcf_16 FAR * p = (hcf_16 FAR *)dst; //this needs more elaborate code in non-x86 platforms
int i = 0;
if ( log_file ) {
fprintf( log_file, "\nread string_16 length %04x (%04d) at port %02.2x to addr %lp",
(hcf_16)n, (hcf_16)n, (hcf_16)(prt)&0xFF, dst );
}
while ( n-- ) {
*p =(hcf_16)_inpw( prt);
if ( log_file ) {
if ( i++ % 0x10 ) {
fprintf( log_file, "%04x ", *p);
} else {
fprintf( log_file, "\n%04x ", *p);
}
}
p++;
}
} // IN_PORT_STRING_8_16
void OUT_PORT_STRING_32( hcf_io prt, hcf_32 FAR * src, int n) {
int i = 0;
hcf_16 FAR * p;
if ( log_file ) {
fprintf( log_file, "\nwrite string_32 length %04x (%04d) at port %02.2x",
(hcf_16)n, (hcf_16)n, (hcf_16)(prt)&0xFF);
}
while ( n-- ) {
p = (hcf_16 FAR *)src;
_outpw( prt, *p++ );
_outpw( prt, *p );
if ( log_file ) {
fprintf( log_file, "%s%08lx ", i++ % 0x08 ? " " : "\n", *src);
}
src++;
}
} // OUT_PORT_STRING_32
void OUT_PORT_STRING_8_16( hcf_io prt, hcf_8 FAR * src, int n) { //also handles byte alignment problems
hcf_16 FAR * p = (hcf_16 FAR *)src; //this needs more elaborate code in non-x86 platforms
int i = 0;
if ( log_file ) {
fprintf( log_file, "\nwrite string_16 length %04x (%04d) at port %04x", n, n, (hcf_16)prt);
}
while ( n-- ) {
(void)_outpw( prt, *p);
if ( log_file ) {
if ( i++ % 0x10 ) {
fprintf( log_file, "%04x ", *p);
} else {
fprintf( log_file, "\n%04x ", *p);
}
}
p++;
}
} // OUT_PORT_STRING_8_16
#endif // IN_PORT_WORD
/************************************************************************************************************
******************************* D A T A D E F I N I T I O N S ********************************************
************************************************************************************************************/
#if HCF_ASSERT
IFBP BASED assert_ifbp = NULL; //to make asserts easily work under MMD and DHF
#endif // HCF_ASSERT
#if HCF_ENCAP
/* SNAP header to be inserted in Ethernet-II frames */
HCF_STATIC hcf_8 BASED snap_header[] = { 0xAA, 0xAA, 0x03, 0x00, 0x00, //5 bytes signature +
0 }; //1 byte protocol identifier
#endif // HCF_ENCAP
#if (HCF_TYPE) & HCF_TYPE_WPA
HCF_STATIC hcf_8 BASED mic_pad[8] = { 0x5A, 0, 0, 0, 0, 0, 0, 0 }; //MIC padding of message
#endif // HCF_TYPE_WPA
#if defined MSF_COMPONENT_ID
CFG_IDENTITY_STRCT BASED cfg_drv_identity = {
sizeof(cfg_drv_identity)/sizeof(hcf_16) - 1, //length of RID
CFG_DRV_IDENTITY, // (0x0826)
MSF_COMPONENT_ID,
MSF_COMPONENT_VAR,
MSF_COMPONENT_MAJOR_VER,
MSF_COMPONENT_MINOR_VER
} ;
CFG_RANGES_STRCT BASED cfg_drv_sup_range = {
sizeof(cfg_drv_sup_range)/sizeof(hcf_16) - 1, //length of RID
CFG_DRV_SUP_RANGE, // (0x0827)
COMP_ROLE_SUPL,
COMP_ID_DUI,
{{ DUI_COMPAT_VAR,
DUI_COMPAT_BOT,
DUI_COMPAT_TOP
}}
} ;
struct CFG_RANGE3_STRCT BASED cfg_drv_act_ranges_pri = {
sizeof(cfg_drv_act_ranges_pri)/sizeof(hcf_16) - 1, //length of RID
CFG_DRV_ACT_RANGES_PRI, // (0x0828)
COMP_ROLE_ACT,
COMP_ID_PRI,
{
{ 0, 0, 0 }, // HCF_PRI_VAR_1 not supported by HCF 7
{ 0, 0, 0 }, // HCF_PRI_VAR_2 not supported by HCF 7
{ 3, //var_rec[2] - Variant number
CFG_DRV_ACT_RANGES_PRI_3_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_PRI_3_TOP // - Top Compatibility
}
}
} ;
struct CFG_RANGE4_STRCT BASED cfg_drv_act_ranges_sta = {
sizeof(cfg_drv_act_ranges_sta)/sizeof(hcf_16) - 1, //length of RID
CFG_DRV_ACT_RANGES_STA, // (0x0829)
COMP_ROLE_ACT,
COMP_ID_STA,
{
#if defined HCF_STA_VAR_1
{ 1, //var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_STA_1_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_STA_1_TOP // - Top Compatibility
},
#else
{ 0, 0, 0 },
#endif // HCF_STA_VAR_1
#if defined HCF_STA_VAR_2
{ 2, //var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_STA_2_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_STA_2_TOP // - Top Compatibility
},
#else
{ 0, 0, 0 },
#endif // HCF_STA_VAR_2
// For Native_USB (Not used!)
#if defined HCF_STA_VAR_3
{ 3, //var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_STA_3_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_STA_3_TOP // - Top Compatibility
},
#else
{ 0, 0, 0 },
#endif // HCF_STA_VAR_3
// Warp
#if defined HCF_STA_VAR_4
{ 4, //var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_STA_4_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_STA_4_TOP // - Top Compatibility
}
#else
{ 0, 0, 0 }
#endif // HCF_STA_VAR_4
}
} ;
struct CFG_RANGE6_STRCT BASED cfg_drv_act_ranges_hsi = {
sizeof(cfg_drv_act_ranges_hsi)/sizeof(hcf_16) - 1, //length of RID
CFG_DRV_ACT_RANGES_HSI, // (0x082A)
COMP_ROLE_ACT,
COMP_ID_HSI,
{
#if defined HCF_HSI_VAR_0 // Controlled deployment
{ 0, // var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_HSI_0_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_HSI_0_TOP // - Top Compatibility
},
#else
{ 0, 0, 0 },
#endif // HCF_HSI_VAR_0
{ 0, 0, 0 }, // HCF_HSI_VAR_1 not supported by HCF 7
{ 0, 0, 0 }, // HCF_HSI_VAR_2 not supported by HCF 7
{ 0, 0, 0 }, // HCF_HSI_VAR_3 not supported by HCF 7
#if defined HCF_HSI_VAR_4 // Hermes-II all types
{ 4, // var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_HSI_4_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_HSI_4_TOP // - Top Compatibility
},
#else
{ 0, 0, 0 },
#endif // HCF_HSI_VAR_4
#if defined HCF_HSI_VAR_5 // WARP Hermes-2.5
{ 5, // var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_HSI_5_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_HSI_5_TOP // - Top Compatibility
}
#else
{ 0, 0, 0 }
#endif // HCF_HSI_VAR_5
}
} ;
CFG_RANGE4_STRCT BASED cfg_drv_act_ranges_apf = {
sizeof(cfg_drv_act_ranges_apf)/sizeof(hcf_16) - 1, //length of RID
CFG_DRV_ACT_RANGES_APF, // (0x082B)
COMP_ROLE_ACT,
COMP_ID_APF,
{
#if defined HCF_APF_VAR_1 //(Fake) Hermes-I
{ 1, //var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_APF_1_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_APF_1_TOP // - Top Compatibility
},
#else
{ 0, 0, 0 },
#endif // HCF_APF_VAR_1
#if defined HCF_APF_VAR_2 //Hermes-II
{ 2, // var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_APF_2_BOTTOM, // - Bottom Compatibility
CFG_DRV_ACT_RANGES_APF_2_TOP // - Top Compatibility
},
#else
{ 0, 0, 0 },
#endif // HCF_APF_VAR_2
#if defined HCF_APF_VAR_3 // Native_USB
{ 3, // var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_APF_3_BOTTOM, // - Bottom Compatibility !!!!!see note below!!!!!!!
CFG_DRV_ACT_RANGES_APF_3_TOP // - Top Compatibility
},
#else
{ 0, 0, 0 },
#endif // HCF_APF_VAR_3
#if defined HCF_APF_VAR_4 // WARP Hermes 2.5
{ 4, // var_rec[1] - Variant number
CFG_DRV_ACT_RANGES_APF_4_BOTTOM, // - Bottom Compatibility !!!!!see note below!!!!!!!
CFG_DRV_ACT_RANGES_APF_4_TOP // - Top Compatibility
}
#else
{ 0, 0, 0 }
#endif // HCF_APF_VAR_4
}
} ;
#define HCF_VERSION TEXT( "HCF$Revision: 1.10 $" )
static struct /*CFG_HCF_OPT_STRCT*/ {
hcf_16 len; //length of cfg_hcf_opt struct
hcf_16 typ; //type 0x082C
hcf_16 v0; //offset HCF_VERSION
hcf_16 v1; // MSF_COMPONENT_ID
hcf_16 v2; // HCF_ALIGN
hcf_16 v3; // HCF_ASSERT
hcf_16 v4; // HCF_BIG_ENDIAN
hcf_16 v5; // /* HCF_DLV | HCF_DLNV */
hcf_16 v6; // HCF_DMA
hcf_16 v7; // HCF_ENCAP
hcf_16 v8; // HCF_EXT
hcf_16 v9; // HCF_INT_ON
hcf_16 v10; // HCF_IO
hcf_16 v11; // HCF_LEGACY
hcf_16 v12; // HCF_MAX_LTV
hcf_16 v13; // HCF_PROT_TIME
hcf_16 v14; // HCF_SLEEP
hcf_16 v15; // HCF_TALLIES
hcf_16 v16; // HCF_TYPE
hcf_16 v17; // HCF_NIC_TAL_CNT
hcf_16 v18; // HCF_HCF_TAL_CNT
hcf_16 v19; // offset tallies
TCHAR val[sizeof(HCF_VERSION)];
} BASED cfg_hcf_opt = {
sizeof(cfg_hcf_opt)/sizeof(hcf_16) -1,
CFG_HCF_OPT, // (0x082C)
( sizeof(cfg_hcf_opt) - sizeof(HCF_VERSION) - 4 )/sizeof(hcf_16),
#if defined MSF_COMPONENT_ID
MSF_COMPONENT_ID,
#else
0,
#endif // MSF_COMPONENT_ID
HCF_ALIGN,
HCF_ASSERT,
HCF_BIG_ENDIAN,
0, // /* HCF_DLV | HCF_DLNV*/,
HCF_DMA,
HCF_ENCAP,
HCF_EXT,
HCF_INT_ON,
HCF_IO,
HCF_LEGACY,
HCF_MAX_LTV,
HCF_PROT_TIME,
HCF_SLEEP,
HCF_TALLIES,
HCF_TYPE,
#if (HCF_TALLIES) & ( HCF_TALLIES_NIC | HCF_TALLIES_HCF )
HCF_NIC_TAL_CNT,
HCF_HCF_TAL_CNT,
offsetof(IFB_STRCT, IFB_TallyLen ),
#else
0, 0, 0,
#endif // HCF_TALLIES_NIC / HCF_TALLIES_HCF
HCF_VERSION
}; // cfg_hcf_opt
#endif // MSF_COMPONENT_ID
#if defined HCF_TALLIES_EXTRA
replaced by HCF_EXT_TALLIES_FW ;
#endif // HCF_TALLIES_EXTRA
#if defined MSF_COMPONENT_ID || (HCF_EXT) & HCF_EXT_MB
#if (HCF_EXT) & HCF_EXT_MB
HCF_STATIC LTV_STRCT BASED cfg_null = { 1, CFG_NULL, {0} };
#endif // HCF_EXT_MB
HCF_STATIC hcf_16* BASED xxxx[ ] = {
#if (HCF_EXT) & HCF_EXT_MB
&cfg_null.len, //CFG_NULL 0x0820
#endif // HCF_EXT_MB
#if defined MSF_COMPONENT_ID
&cfg_drv_identity.len, //CFG_DRV_IDENTITY 0x0826
&cfg_drv_sup_range.len, //CFG_DRV_SUP_RANGE 0x0827
&cfg_drv_act_ranges_pri.len, //CFG_DRV_ACT_RANGES_PRI 0x0828
&cfg_drv_act_ranges_sta.len, //CFG_DRV_ACT_RANGES_STA 0x0829
&cfg_drv_act_ranges_hsi.len, //CFG_DRV_ACT_RANGES_HSI 0x082A
&cfg_drv_act_ranges_apf.len, //CFG_DRV_ACT_RANGES_APF 0x082B
&cfg_hcf_opt.len, //CFG_HCF_OPT 0x082C
NULL, //IFB_PRIIdentity placeholder 0xFD02
NULL, //IFB_PRISup placeholder 0xFD03
#endif // MSF_COMPONENT_ID
NULL //endsentinel
};
#define xxxx_PRI_IDENTITY_OFFSET (sizeof(xxxx)/sizeof(xxxx[0]) - 3)
#endif // MSF_COMPONENT_ID / HCF_EXT_MB
/************************************************************************************************************
************************** T O P L E V E L H C F R O U T I N E S **************************************
************************************************************************************************************/
#if (HCF_DL_ONLY) == 0
/************************************************************************************************************
*
*.MODULE int hcf_action( IFBP ifbp, hcf_16 action )
*.PURPOSE Changes the run-time Card behavior.
* Performs Miscellanuous actions.
*
*.ARGUMENTS
* ifbp address of the Interface Block
* action number identifying the type of change
* - HCF_ACT_CCX_OFF disable CKIP
* - HCF_ACT_CCX_ON enable CKIP
* - HCF_ACT_INT_FORCE_ON enable interrupt generation by WaveLAN NIC
* - HCF_ACT_INT_OFF disable interrupt generation by WaveLAN NIC
* - HCF_ACT_INT_ON compensate 1 HCF_ACT_INT_OFF, enable interrupt generation if balance reached
* - HCF_ACT_PRS_SCAN Hermes Probe Respons Scan (F102) command
* - HCF_ACT_RX_ACK acknowledge non-DMA receiver to Hermes
* - HCF_ACT_SCAN Hermes Inquire Scan (F101) command (non-WARP only)
* - HCF_ACT_SLEEP DDS Sleep request
* - HCF_ACT_TALLIES Hermes Inquire Tallies (F100) command
*
*.RETURNS
* HCF_SUCCESS all (including invalid)
* HCF_INT_PENDING HCF_ACT_INT_OFF, interrupt pending
* HCF_ERR_NO_NIC HCF_ACT_INT_OFF, NIC presence check fails
*
*.CONDITIONS
* Except for hcf_action with HCF_ACT_INT_FORCE_ON or HCF_ACT_INT_OFF as parameter or hcf_connect with an I/O
* address (i.e. not HCF_DISCONNECT), all hcf-function calls MUST be preceeded by a call of hcf_action with
* HCF_ACT_INT_OFF as parameter.
* Note that hcf_connect defaults to NIC interrupt disabled mode, i.e. as if hcf_action( HCF_ACT_INT_OFF )
* was called.
*
*.DESCRIPTION
* hcf_action supports the following mode changing action-code pairs that are antonyms
* - HCF_ACT_CCX_OFF / HCF_ACT_CCX_ON
* - HCF_ACT_INT_[FORCE_]ON / HCF_ACT_INT_OFF
*
* Additionally hcf_action can start the following actions in the NIC:
* - HCF_ACT_PRS_SCAN
* - HCF_ACT_RX_ACK
* - HCF_ACT_SCAN
* - HCF_ACT_SLEEP
* - HCF_ACT_TALLIES
*
* o HCF_ACT_INT_OFF: Sets NIC Interrupts mode Disabled.
* This command, and the associated [Force] Enable NIC interrupts command, are only available if the HCF_INT_ON
* compile time option is not set at 0x0000.
*
* o HCF_ACT_INT_ON: Sets NIC Interrupts mode Enabled.
* Enable NIC Interrupts, depending on the number of preceding Disable NIC Interrupt calls.
*
* o HCF_ACT_INT_FORCE_ON: Force NIC Interrupts mode Enabled.
* Sets NIC Interrupts mode Enabled, regardless off the number of preceding Disable NIC Interrupt calls.
*
* The disabling and enabling of interrupts are antonyms.
* These actions must be balanced.
* For each "disable interrupts" there must be a matching "enable interrupts".
* The disable interrupts may be executed multiple times in a row without intervening enable interrupts, in
* other words, the disable interrupts may be nested.
* The interrupt generation mechanism is disabled at the first call with HCF_ACT_INT_OFF.
* The interrupt generation mechanism is re-enabled when the number of calls with HCF_ACT_INT_ON matches the
* number of calls with INT_OFF.
*
* It is not allowed to have more Enable NIC Interrupts calls than Disable NIC Interrupts calls.
* The interrupt generation mechanism is initially (i.e. after hcf_connect) disabled.
* An MSF based on a interrupt strategy must call hcf_action with INT_ON in its initialization logic.
*
*! The INT_OFF/INT_ON housekeeping is initialized at 0x0000 by hcf_connect, causing the interrupt generation
* mechanism to be disabled at first. This suits MSF implementation based on a polling strategy.
*
* o HCF_ACT_CCX_OFF / HCF_ACT_CCX_ON
*!! This can use some more explanation;?
* Disables and Enables support in the HCF runtime code for the CCX feature. Each time one of these action
* codes is used, the effects of the preceding use cease.
*
* o HCF_ACT_SLEEP: Initiates the Disconnected DeepSleep process
* This command is only available if the HCF_DDS compile time option is set. It triggers the F/W to start the
* sleep handshaking. Regardless whether the Host initiates a Disconnected DeepSleep (DDS) or the F/W initiates
* a Connected DeepSleep (CDS), the Host-F/W sleep handshaking is completed when the NIC Interrupts mode is
* enabled (by means of the balancing HCF_ACT_INT_ON), i.e. at that moment the F/W really goes into sleep mode.
* The F/W is wokenup by the HCF when the NIC Interrupts mode are disabled, i.e. at the first HCF_ACT_INT_OFF
* after going into sleep.
*
* The following Miscellanuous actions are defined:
*
* o HCF_ACT_RX_ACK: Receiver Acknowledgement (non-DMA, non-USB mode only)
* Acking the receiver, frees the NIC memory used to hold the Rx frame and allows the F/W to
* report the existence of the next Rx frame.
* If the MSF does not need access (any longer) to the current frame, e.g. because it is rejected based on the
* look ahead or copied to another buffer, the receiver may be acked. Acking earlier is assumed to have the
* potential of improving the performance.
* If the MSF does not explitly ack te receiver, the acking is done implicitly if:
* - the received frame fits in the look ahead buffer, by the hcf_service_nic call that reported the Rx frame
* - if not in the above step, by hcf_rcv_msg (assuming hcf_rcv_msg is called)
* - if neither of the above implicit acks nor an explicit ack by the MSF, by the first hcf_service_nic after
* the hcf_service_nic that reported the Rx frame.
* Note: If an Rx frame is already acked, an explicit ACK by the MSF acts as a NoOperation.
*
* o HCF_ACT_TALLIES: Inquire Tallies command
* This command is only operational if the F/W is enabled.
* The Inquire Tallies command requests the F/W to provide its current set of tallies.
* See also hcf_get_info with CFG_TALLIES as parameter.
*
* o HCF_ACT_PRS_SCAN: Inquire Probe Respons Scan command
* This command is only operational if the F/W is enabled.
* The Probe Respons Scan command starts a scan sequence.
* The HCF puts the result of this action in an MSF defined buffer (see CFG_RID_LOG_STRCT).
*
* o HCF_ACT_SCAN: Inquire Scan command
* This command is only supported for HII F/W (i.e. pre-WARP) and it is operational if the F/W is enabled.
* The Inquire Scan command starts a scan sequence.
* The HCF puts the result of this action in an MSF defined buffer (see CFG_RID_LOG_STRCT).
*
* Assert fails if
* - ifbp has a recognizable out-of-range value.
* - NIC interrupts are not disabled while required by parameter action.
* - an invalid code is specified in parameter action.
* - HCF_ACT_INT_ON commands outnumber the HCF_ACT_INT_OFF commands.
* - reentrancy, may be caused by calling hcf_functions without adequate protection against NIC interrupts or
* multi-threading
*
* - Since the HCF does not maintain status information relative to the F/W enabled state, it is not asserted
* whether HCF_ACT_SCAN, HCF_ACT_PRS_SCAN or HCF_ACT_TALLIES are only used while F/W is enabled.
*
*.DIAGRAM
* 0: The assert embedded in HCFLOGENTRY checks against re-entrancy. Re-entrancy could be caused by a MSF logic
* at task-level calling hcf_functions without shielding with HCF_ACT_ON/_OFF. However the HCF_ACT_INT_OFF
* action itself can per definition not be protected this way. Based on code inspection, it can be concluded,
* that there is no re-entrancy PROBLEM in this particular flow. It does not seem worth the trouble to
* explicitly check for this condition (although there was a report of an MSF which ran into this assert.
* 2:IFB_IntOffCnt is used to balance the INT_OFF and INT_ON calls. Disabling of the interrupts is achieved by
* writing a zero to the Hermes IntEn register. In a shared interrupt environment (e.g. the mini-PCI NDIS
* driver) it is considered more correct to return the status HCF_INT_PENDING if and only if, the current
* invocation of hcf_service_nic is (apparently) called in the ISR when the ISR was activated as result of a
* change in HREG_EV_STAT matching a bit in HREG_INT_EN, i.e. not if invoked as result of another device
* generating an interrupt on the shared interrupt line.
* Note 1: it has been observed that under certain adverse conditions on certain platforms the writing of
* HREG_INT_EN can apparently fail, therefor it is paramount that HREG_INT_EN is written again with 0 for
* each and every call to HCF_ACT_INT_OFF.
* Note 2: it has been observed that under certain H/W & S/W architectures this logic is called when there is
* no NIC at all. To cater for this, the value of HREG_INT_EN is validated. If the unused bit 0x0100 is set,
* it is assumed there is no NIC.
* Note 3: During the download process, some versions of the F/W reset HREG_SW_0, hence checking this
* register for HCF_MAGIC (the classical NIC presence test) when HCF_ACT_INT_OFF is called due to another
* card interrupting via a shared IRQ during a download, fails.
*4: The construction "if ( ifbp->IFB_IntOffCnt-- == 0 )" is optimal (in the sense of shortest/quickest
* path in error free flows) but NOT fail safe in case of too many INT_ON invocations compared to INT_OFF).
* Enabling of the interrupts is achieved by writing the Hermes IntEn register.
* - If the HCF is in Defunct mode, the interrupts stay disabled.
* - Under "normal" conditions, the HCF is only interested in Info Events, Rx Events and Notify Events.
* - When the HCF is out of Tx/Notify resources, the HCF is also interested in Alloc Events.
* - via HCF_EXT, the MSF programmer can also request HREG_EV_TICK and/or HREG_EV_TX_EXC interrupts.
* For DMA operation, the DMA hardware handles the alloc events. The DMA engine will generate a 'TxDmaDone'
* event as soon as it has pumped a frame from host ram into NIC-RAM (note that the frame does not have to be
* transmitted then), and a 'RxDmaDone' event as soon as a received frame has been pumped from NIC-RAM into
* host ram. Note that the 'alloc' event has been removed from the event-mask, because the DMA engine will
* react to and acknowledge this event.
*6: ack the "old" Rx-event. See "Rx Buffer free strategy" in hcf_service_nic above for more explanation.
* IFB_RxFID and IFB_RxLen must be cleared to bring both the internal HCF house keeping and the information
* supplied to the MSF in the state "no frame received".
*8: The HCF_ACT_SCAN, HCF_ACT_PRS_SCAN and HCF_ACT_TALLIES activity are merged by "clever" algebraic
* manipulations of the RID-values and action codes, so foregoing robustness against migration problems for
* ease of implementation. The assumptions about numerical relationships between CFG_TALLIES etc and
* HCF_ACT_TALLIES etc are checked by the "#if" statements just prior to the body of this routine, resulting
* in: err "maintenance" during compilation if the assumptions are no longer met. The writing of HREG_PARAM_1
* with 0x3FFF in case of an PRS scan, is a kludge to get around lack of specification, hence different
* implementation in F/W and Host.
* When there is no NIC RAM available, some versions of the Hermes F/W do report 0x7F00 as error in the
* Result field of the Status register and some F/W versions don't. To mask this difference to the MSF all
* return codes of the Hermes are ignored ("best" and "most simple" solution to these types of analomies with
* an acceptable loss due to ignoring all error situations as well).
* The "No inquire space" is reported via the Hermes tallies.
*30: do not HCFASSERT( rc, rc ) since rc == HCF_INT_PENDING is no error
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
#if ( (HCF_TYPE) & HCF_TYPE_HII5 ) == 0
#if CFG_SCAN != CFG_TALLIES - HCF_ACT_TALLIES + HCF_ACT_SCAN
err: "maintenance" apparently inviolated the underlying assumption about the numerical values of these macros
#endif
#endif // HCF_TYPE_HII5
#if CFG_PRS_SCAN != CFG_TALLIES - HCF_ACT_TALLIES + HCF_ACT_PRS_SCAN
err: "maintenance" apparently inviolated the underlying assumption about the numerical values of these macros
#endif
int
hcf_action( IFBP ifbp, hcf_16 action )
{
int rc = HCF_SUCCESS;
HCFASSERT( ifbp->IFB_Magic == HCF_MAGIC, ifbp->IFB_Magic )
#if HCF_INT_ON
HCFLOGENTRY( action == HCF_ACT_INT_FORCE_ON ? HCF_TRACE_ACTION_KLUDGE : HCF_TRACE_ACTION, action ) /* 0 */
#if (HCF_SLEEP)
HCFASSERT( ifbp->IFB_IntOffCnt != 0xFFFE || action == HCF_ACT_INT_OFF,
MERGE_2( action, ifbp->IFB_IntOffCnt ) )
#else
HCFASSERT( ifbp->IFB_IntOffCnt != 0xFFFE, action )
#endif // HCF_SLEEP
HCFASSERT( ifbp->IFB_IntOffCnt != 0xFFFF ||
action == HCF_ACT_INT_OFF || action == HCF_ACT_INT_FORCE_ON, action )
HCFASSERT( ifbp->IFB_IntOffCnt <= 16 || ifbp->IFB_IntOffCnt >= 0xFFFE,
MERGE_2( action, ifbp->IFB_IntOffCnt ) ) //nesting more than 16 deep seems unreasonable
#endif // HCF_INT_ON
switch (action) {
#if HCF_INT_ON
hcf_16 i;
case HCF_ACT_INT_OFF: // Disable Interrupt generation
#if HCF_SLEEP
if ( ifbp->IFB_IntOffCnt == 0xFFFE ) { // WakeUp test ;?tie this to the "new" super-LinkStat
ifbp->IFB_IntOffCnt++; // restore conventional I/F
OPW(HREG_IO, HREG_IO_WAKEUP_ASYNC ); // set wakeup bit
OPW(HREG_IO, HREG_IO_WAKEUP_ASYNC ); // set wakeup bit to counteract the clearing by F/W
// 800 us latency before FW switches to high power
MSF_WAIT(800); // MSF-defined function to wait n microseconds.
//OOR if ( ifbp->IFB_DSLinkStat & CFG_LINK_STAT_DS_OOR ) { // OutOfRange
// printk( "<5>ACT_INT_OFF: Deepsleep phase terminated, enable and go to AwaitConnection\n" ); //;?remove me 1 day
// hcf_cntl( ifbp, HCF_CNTL_ENABLE );
// }
// ifbp->IFB_DSLinkStat &= ~( CFG_LINK_STAT_DS_IR | CFG_LINK_STAT_DS_OOR); //clear IR/OOR state
}
#endif // HCF_SLEEP
/*2*/ ifbp->IFB_IntOffCnt++;
//! rc = 0;
i = IPW( HREG_INT_EN );
OPW( HREG_INT_EN, 0 );
if ( i & 0x1000 ) {
rc = HCF_ERR_NO_NIC;
} else {
if ( i & IPW( HREG_EV_STAT ) ) {
rc = HCF_INT_PENDING;
}
}
break;
case HCF_ACT_INT_FORCE_ON: // Enforce Enable Interrupt generation
ifbp->IFB_IntOffCnt = 0;
//Fall through in HCF_ACT_INT_ON
case HCF_ACT_INT_ON: // Enable Interrupt generation
/*4*/ if ( ifbp->IFB_IntOffCnt-- == 0 && ifbp->IFB_CardStat == 0 ) {
//determine Interrupt Event mask
#if HCF_DMA
if ( ifbp->IFB_CntlOpt & USE_DMA ) {
i = HREG_EV_INFO | HREG_EV_RDMAD | HREG_EV_TDMAD | HREG_EV_TX_EXT; //mask when DMA active
} else
#endif // HCF_DMA
{
i = HREG_EV_INFO | HREG_EV_RX | HREG_EV_TX_EXT; //mask when DMA not active
if ( ifbp->IFB_RscInd == 0 ) {
i |= HREG_EV_ALLOC; //mask when no TxFID available
}
}
#if HCF_SLEEP
if ( ( IPW(HREG_EV_STAT) & ( i | HREG_EV_SLEEP_REQ ) ) == HREG_EV_SLEEP_REQ ) {
// firmware indicates it would like to go into sleep modus
// only acknowledge this request if no other events that can cause an interrupt are pending
ifbp->IFB_IntOffCnt--; //becomes 0xFFFE
OPW( HREG_INT_EN, i | HREG_EV_TICK );
OPW( HREG_EV_ACK, HREG_EV_SLEEP_REQ | HREG_EV_TICK | HREG_EV_ACK_REG_READY );
} else
#endif // HCF_SLEEP
{
OPW( HREG_INT_EN, i | HREG_EV_SLEEP_REQ );
}
}
break;
#endif // HCF_INT_ON
#if (HCF_SLEEP) & HCF_DDS
case HCF_ACT_SLEEP: // DDS Sleep request
hcf_cntl( ifbp, HCF_CNTL_DISABLE );
cmd_exe( ifbp, HCMD_SLEEP, 0 );
break;
// case HCF_ACT_WAKEUP: // DDS Wakeup request
// HCFASSERT( ifbp->IFB_IntOffCnt == 0xFFFE, ifbp->IFB_IntOffCnt )
// ifbp->IFB_IntOffCnt++; // restore conventional I/F
// OPW( HREG_IO, HREG_IO_WAKEUP_ASYNC );
// MSF_WAIT(800); // MSF-defined function to wait n microseconds.
// rc = hcf_action( ifbp, HCF_ACT_INT_OFF ); /*bogus, IFB_IntOffCnt == 0xFFFF, so if you carefully look
// *at the #if HCF_DDS statements, HCF_ACT_INT_OFF is empty
// *for DDS. "Much" better would be to merge the flows for
// *DDS and DEEP_SLEEP
// */
// break;
#endif // HCF_DDS
#if (HCF_TYPE) & HCF_TYPE_CCX
case HCF_ACT_CCX_ON: // enable CKIP
case HCF_ACT_CCX_OFF: // disable CKIP
ifbp->IFB_CKIPStat = action;
break;
#endif // HCF_TYPE_CCX
case HCF_ACT_RX_ACK: //Receiver ACK
/*6*/ if ( ifbp->IFB_RxFID ) {
DAWA_ACK( HREG_EV_RX );
}
ifbp->IFB_RxFID = ifbp->IFB_RxLen = 0;
break;
/*8*/ case HCF_ACT_PRS_SCAN: // Hermes PRS Scan (F102)
OPW( HREG_PARAM_1, 0x3FFF );
//Fall through in HCF_ACT_TALLIES
case HCF_ACT_TALLIES: // Hermes Inquire Tallies (F100)
#if ( (HCF_TYPE) & HCF_TYPE_HII5 ) == 0
case HCF_ACT_SCAN: // Hermes Inquire Scan (F101)
#endif // HCF_TYPE_HII5
/*!! the assumptions about numerical relationships between CFG_TALLIES etc and HCF_ACT_TALLIES etc
* are checked by #if statements just prior to this routine resulting in: err "maintenance" */
cmd_exe( ifbp, HCMD_INQUIRE, action - HCF_ACT_TALLIES + CFG_TALLIES );
break;
default:
HCFASSERT( DO_ASSERT, action )
break;
}
//! do not HCFASSERT( rc == HCF_SUCCESS, rc ) /* 30*/
HCFLOGEXIT( HCF_TRACE_ACTION )
return rc;
} // hcf_action
#endif // HCF_DL_ONLY
/************************************************************************************************************
*
*.MODULE int hcf_cntl( IFBP ifbp, hcf_16 cmd )
*.PURPOSE Connect or disconnect a specific port to a specific network.
*!! ;???????????????? continue needs more explanation
* recovers by means of "continue" when the connect proces in CCX mode fails
* Enables or disables data transmission and reception for the NIC.
* Activates static NIC configuration for a specific port at connect.
* Activates static configuration for all ports at enable.
*
*.ARGUMENTS
* ifbp address of the Interface Block
* cmd 0x001F: Hermes command (disable, enable, connect, disconnect, continue)
* HCF_CNTL_ENABLE Enable
* HCF_CNTL_DISABLE Disable
* HCF_CNTL_CONTINUE Continue
* HCF_CNTL_CONNECT Connect
* HCF_CNTL_DISCONNECT Disconnect
* 0x0100: command qualifier (continue)
* HCMD_RETRY retry flag
* 0x0700: port number (connect/disconnect)
* HCF_PORT_0 MAC Port 0
* HCF_PORT_1 MAC Port 1
* HCF_PORT_2 MAC Port 2
* HCF_PORT_3 MAC Port 3
* HCF_PORT_4 MAC Port 4
* HCF_PORT_5 MAC Port 5
* HCF_PORT_6 MAC Port 6
*
*.RETURNS
* HCF_SUCCESS
*!! via cmd_exe
* HCF_ERR_NO_NIC
* HCF_ERR_DEFUNCT_...
* HCF_ERR_TIME_OUT
*
*.DESCRIPTION
* The parameter cmd contains a number of subfields.
* The actual value for cmd is created by logical or-ing the appropriate mnemonics for the subfields.
* The field 0x001F contains the command code
* - HCF_CNTL_ENABLE
* - HCF_CNTL_DISABLE
* - HCF_CNTL_CONNECT
* - HCF_CNTL_DISCONNECT
* - HCF_CNTL_CONTINUE
*
* For HCF_CNTL_CONTINUE, the field 0x0100 contains the retry flag HCMD_RETRY.
* For HCF_CNTL_CONNECT and HCF_CNTL_DISCONNECT, the field 0x0700 contains the port number as HCF_PORT_#.
* For Station as well as AccessPoint F/W, MAC Port 0 is the "normal" communication channel.
* For AccessPoint F/W, MAC Port 1 through 6 control the WDS links.
*
* Note that despite the names HCF_CNTL_DISABLE and HCF_CNTL_ENABLE, hcf_cntl does not influence the NIC
* Interrupts mode.
*
* The Connect is used by the MSF to bring a particular port in an inactive state as far as data transmission
* and reception are concerned.
* When a particular port is disconnected:
* - the F/W disables the receiver for that port.
* - the F/W ignores send commands for that port.
* - all frames (Receive as well as pending Transmit) for that port on the NIC are discarded.
*
* When the NIC is disabled, above list applies to all ports, i.e. the result is like all ports are
* disconnected.
*
* When a particular port is connected:
* - the F/W effectuates the static configuration for that port.
* - enables the receiver for that port.
* - accepts send commands for that port.
*
* Enabling has the following effects:
* - the F/W effectuates the static configuration for all ports.
* The F/W only updates its static configuration at a transition from disabled to enabled or from
* disconnected to connected.
* In order to enforce the static configuration, the MSF must assure that such a transition takes place.
* Due to such a disable/enable or disconnect/connect sequence, Rx/Tx frames may be lost, in other words,
* configuration may impact communication.
* - The DMA Engine (if applicable) is enabled.
* Note that the Enable Function by itself only enables data transmission and reception, it
* does not enable the Interrupt Generation mechanism. This is done by hcf_action.
*
* Disabling has the following effects:
*!! ;?????is the following statement really true
* - it acts as a disconnect on all ports.
* - The DMA Engine (if applicable) is disabled.
*
* For impact of the disable command on the behavior of hcf_dma_tx/rx_get see the appropriate sections.
*
* Although the Enable/Disable and Connect/Disconnect are antonyms, there is no restriction on their sequencing,
* in other words, they may be called multiple times in arbitrary sequence without being paired or balanced.
* Each time one of these functions is called, the effects of the preceding calls cease.
*
* Assert fails if
* - ifbp has a recognizable out-of-range value.
* - NIC interrupts are not disabled.
* - A command other than Continue, Enable, Disable, Connect or Disconnect is given.
* - An invalid combination of the subfields is given or a bit outside the subfields is given.
* - any return code besides HCF_SUCCESS.
* - reentrancy, may be caused by calling a hcf_function without adequate protection against NIC interrupts or
* multi-threading
*
*.DIAGRAM
* hcf_cntl takes successively the following actions:
*2: If the HCF is in Defunct mode or incompatible with the Primary or Station Supplier in the Hermes,
* hcf_cntl() returns immediately with HCF_ERR_NO_NIC;? as status.
*8: when the port is disabled, the DMA engine needs to be de-activated, so the host can safely reclaim tx
* packets from the tx descriptor chain.
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
int
hcf_cntl( IFBP ifbp, hcf_16 cmd )
{
int rc = HCF_ERR_INCOMP_FW;
#if HCF_ASSERT
{ int x = cmd & HCMD_CMD_CODE;
if ( x == HCF_CNTL_CONTINUE ) x &= ~HCMD_RETRY;
else if ( (x == HCMD_DISABLE || x == HCMD_ENABLE) && ifbp->IFB_FWIdentity.comp_id == COMP_ID_FW_AP ) {
x &= ~HFS_TX_CNTL_PORT;
}
HCFASSERT( x==HCF_CNTL_ENABLE || x==HCF_CNTL_DISABLE || HCF_CNTL_CONTINUE ||
x==HCF_CNTL_CONNECT || x==HCF_CNTL_DISCONNECT, cmd )
}
#endif // HCF_ASSERT
// #if (HCF_SLEEP) & HCF_DDS
// HCFASSERT( ifbp->IFB_IntOffCnt != 0xFFFE, cmd )
// #endif // HCF_DDS
HCFLOGENTRY( HCF_TRACE_CNTL, cmd )
if ( ifbp->IFB_CardStat == 0 ) { /*2*/
/*6*/ rc = cmd_exe( ifbp, cmd, 0 );
#if (HCF_SLEEP) & HCF_DDS
ifbp->IFB_TickCnt = 0; //start 2 second period (with 1 tick uncertanty)
#endif // HCF_DDS
}
#if HCF_DMA
//!rlav : note that this piece of code is always executed, regardless of the DEFUNCT bit in IFB_CardStat.
// The reason behind this is that the MSF should be able to get all its DMA resources back from the HCF,
// even if the hardware is disfunctional. Practical example under Windows : surprise removal.
if ( ifbp->IFB_CntlOpt & USE_DMA ) {
hcf_io io_port = ifbp->IFB_IOBase;
DESC_STRCT *p;
if ( cmd == HCF_CNTL_DISABLE || cmd == HCF_CNTL_ENABLE ) {
OUT_PORT_DWORD( (io_port + HREG_DMA_CTRL), DMA_CTRLSTAT_RESET); /*8*/
ifbp->IFB_CntlOpt &= ~DMA_ENABLED;
}
if ( cmd == HCF_CNTL_ENABLE ) {
OUT_PORT_DWORD( (io_port + HREG_DMA_CTRL), DMA_CTRLSTAT_GO);
/* ;? by rewriting hcf_dma_rx_put you can probably just call hcf_dma_rx_put( ifbp->IFB_FirstDesc[DMA_RX] )
* as additional beneficiary side effect, the SOP and EOP bits will also be cleared
*/
ifbp->IFB_CntlOpt |= DMA_ENABLED;
HCFASSERT( NT_ASSERT, NEVER_TESTED )
// make the entire rx descriptor chain DMA-owned, so the DMA engine can (re-)use it.
p = ifbp->IFB_FirstDesc[DMA_RX];
if (p != NULL) { //;? Think this over again in the light of the new chaining strategy
if ( 1 ) { //begin alternative
HCFASSERT( NT_ASSERT, NEVER_TESTED )
put_frame_lst( ifbp, ifbp->IFB_FirstDesc[DMA_RX], DMA_RX );
if ( ifbp->IFB_FirstDesc[DMA_RX] ) {
put_frame_lst( ifbp, ifbp->IFB_FirstDesc[DMA_RX]->next_desc_addr, DMA_RX );
}
} else {
while ( p ) {
//p->buf_cntl.cntl_stat |= DESC_DMA_OWNED;
p->BUF_CNT |= DESC_DMA_OWNED;
p = p->next_desc_addr;
}
// a rx chain is available so hand it over to the DMA engine
p = ifbp->IFB_FirstDesc[DMA_RX];
OUT_PORT_DWORD( (io_port + HREG_RXDMA_PTR32), p->desc_phys_addr);
} //end alternative
}
}
}
#endif // HCF_DMA
HCFASSERT( rc == HCF_SUCCESS, rc )
HCFLOGEXIT( HCF_TRACE_CNTL )
return rc;
} // hcf_cntl
/************************************************************************************************************
*
*.MODULE int hcf_connect( IFBP ifbp, hcf_io io_base )
*.PURPOSE Grants access right for the HCF to the IFB.
* Initializes Card and HCF housekeeping.
*
*.ARGUMENTS
* ifbp (near) address of the Interface Block
* io_base non-USB: I/O Base address of the NIC (connect)
* non-USB: HCF_DISCONNECT
* USB: HCF_CONNECT, HCF_DISCONNECT
*
*.RETURNS
* HCF_SUCCESS
* HCF_ERR_INCOMP_PRI
* HCF_ERR_INCOMP_FW
* HCF_ERR_DEFUNCT_CMD_SEQ
*!! HCF_ERR_NO_NIC really returned ;?
* HCF_ERR_NO_NIC
* HCF_ERR_TIME_OUT
*
* MSF-accessible fields of Result Block:
* IFB_IOBase entry parameter io_base
* IFB_IORange HREG_IO_RANGE (0x40/0x80)
* IFB_Version version of the IFB layout
* IFB_FWIdentity CFG_FW_IDENTITY_STRCT, specifies the identity of the
* "running" F/W, i.e. tertiary F/W under normal conditions
* IFB_FWSup CFG_SUP_RANGE_STRCT, specifies the supplier range of
* the "running" F/W, i.e. tertiary F/W under normal conditions
* IFB_HSISup CFG_SUP_RANGE_STRCT, specifies the HW/SW I/F range of the NIC
* IFB_PRIIdentity CFG_PRI_IDENTITY_STRCT, specifies the Identity of the Primary F/W
* IFB_PRISup CFG_SUP_RANGE_STRCT, specifies the supplier range of the Primary F/W
* all other all MSF accessible fields, which are not specified above, are zero-filled
*
*.CONDITIONS
* It is the responsibility of the MSF to assure the correctness of the I/O Base address.
*
* Note: hcf_connect defaults to NIC interrupt disabled mode, i.e. as if hcf_action( HCF_ACT_INT_OFF )
* was called.
*
*.DESCRIPTION
* hcf_connect passes the MSF-defined location of the IFB to the HCF and grants or revokes access right for the
* HCF to the IFB. Revoking is done by specifying HCF_DISCONNECT rather than an I/O address for the parameter
* io_base. Every call of hcf_connect in "connect" mode, must eventually be followed by a call of hcf_connect
* in "disconnect" mode. Clalling hcf_connect in "connect"/"disconnect" mode can not be nested.
* The IFB address must be used as a handle with all subsequent HCF-function calls and the HCF uses the IFB
* address as a handle when it performs a call(back) of an MSF-function (i.e. msf_assert).
*
* Note that not only the MSF accessible fields are cleared, but also all internal housekeeping
* information is re-initialized.
* This implies that all settings which are done via hcf_action and hcf_put_info (e.g. CFG_MB_ASSERT, CFG_REG_MB,
* CFG_REG_INFO_LOG) must be done again. The only field which is not cleared, is IFB_MSFSup.
*
* If HCF_INT_ON is selected as compile option, NIC interrupts are disabled.
*
* Assert fails if
* - ifbp is not properly aligned ( ref chapter HCF_ALIGN in 4.1.1)
* - I/O Base Address is not a multiple of 0x40 (note: 0x0000 is explicitly allowed).
*
*.DIAGRAM
*
*0: Throughout hcf_connect you need to distinguish the connect from the disconnect case, which requires
* some attention about what to use as "I/O" address when for which purpose.
*2:
*2a: Reset H-II by toggling reset bit in IO-register on and off.
* The HCF_TYPE_PRELOADED caters for the DOS environment where H-II is loaded by a separate program to
* overcome the 64k size limit posed on DOS drivers.
* The macro OPW is not yet useable because the IFB_IOBase field is not set.
* Note 1: hopefully the clearing and initializing of the IFB (see below) acts as a delay which meets the
* specification for S/W reset
* Note 2: it turns out that on some H/W constellations, the clock to access the EEProm is not lowered
* to an appropriate frequency by HREG_IO_SRESET. By giving an HCMD_INI first, this problem is worked around.
*2b: Experimentally it is determined over a wide range of F/W versions that waiting for the for Cmd bit in
* Ev register gives a workable strategy. The available documentation does not give much clues.
*4: clear and initialize the IFB
* The HCF house keeping info is designed such that zero is the appropriate initial value for as much as
* feasible IFB-items.
* The readable fields mentioned in the description section and some HCF specific fields are given their
* actual value.
* IFB_TickIni is initialized at best guess before calibration
* Hcf_connect defaults to "no interrupt generation" (implicitly achieved by the zero-filling).
*6: Register compile-time linked MSF Routine and set default filter level
* cast needed to get around the "near" problem in DOS COM model
* er C2446: no conversion from void (__near __cdecl *)(unsigned char __far *,unsigned int,unsigned short,int)
* to void (__far __cdecl *)(unsigned char __far *,unsigned int,unsigned short,int)
*8: If a command is apparently still active (as indicated by the Busy bit in Cmd register) this may indicate a
* blocked cmd pipe line. To unblock the following actions are done:
* - Ack everything
* - Wait for Busy bit drop in Cmd register
* - Wait for Cmd bit raise in Ev register
* The two waits are combined in a single HCF_WAIT_WHILE to optimize memory size. If either of these waits
* fail (prot_cnt becomes 0), then something is serious wrong. Rather than PANICK, the assumption is that the
* next cmd_exe will fail, causing the HCF to go into DEFUNCT mode
*10: Ack everything to unblock a (possibly blocked) cmd pipe line
* Note 1: it is very likely that an Alloc event is pending and very well possible that a (Send) Cmd event is
* pending on non-initial calls
* Note 2: it is assumed that this strategy takes away the need to ack every conceivable event after an
* Hermes Initialize
*12: Only H-II NEEDS the Hermes Initialize command. Due to the different semantics for H-I and H-II
* Initialize command, init() does not (and can not, since it is called e.g. after a download) execute the
* Hermes Initialize command. Executing the Hermes Initialize command for H-I would not harm but not do
* anything useful either, so it is skipped.
* The return status of cmd_exe is ignored. It is assumed that if cmd_exe fails, init fails too
*14: use io_base as a flag to merge hcf_connect and hcf_disconnect into 1 routine
* the call to init and its subsequent call of cmd_exe will return HCF_ERR_NO_NIC if appropriate. This status
* is (badly) needed by some legacy combination of NT4 and card services which do not yield an I/O address in
* time.
*
*.NOTICE
* On platforms where the NULL-pointer is not a bit-pattern of all zeros, the zero-filling of the IFB results
* in an incorrect initialization of pointers.
* The implementation of the MailBox manipulation in put_mb_info protects against the absence of a MailBox
* based on IFB_MBSize, IFB_MBWp and ifbp->IFB_MBRp. This has ramifications on the initialization of the
* MailBox via hcf_put_info with the CFG_REG_MB type, but it prevents dependency on the "NULL-"ness of
* IFB_MBp.
*
*.NOTICE
* There are a number of problems when asserting and logging hcf_connect, e.g.
* - Asserting on re-entrancy of hcf_connect by means of
* "HCFASSERT( (ifbp->IFB_AssertTrace & HCF_ASSERT_CONNECT) == 0, 0 )" is not useful because IFB contents
* are undefined
* - Asserting before the IFB is cleared will cause mdd_assert() to interpret the garbage in IFB_AssertRtn
* as a routine address
* Therefore HCFTRACE nor HCFLOGENTRY is called by hcf_connect.
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
int
hcf_connect( IFBP ifbp, hcf_io io_base )
{
int rc = HCF_SUCCESS;
hcf_io io_addr;
hcf_32 prot_cnt;
hcf_8 *q;
LTV_STRCT x;
#if HCF_ASSERT
hcf_16 xa = ifbp->IFB_FWIdentity.typ;
/* is assumed to cause an assert later on if hcf_connect is called without intervening hcf_disconnect.
* xa == CFG_FW_IDENTITY in subsequent calls without preceding hcf_disconnect,
* xa == 0 in subsequent calls with preceding hcf_disconnect,
* xa == "garbage" (any value except CFG_FW_IDENTITY is acceptable) in the initial call
*/
#endif // HCF_ASSERT
if ( io_base == HCF_DISCONNECT ) { //disconnect
io_addr = ifbp->IFB_IOBase;
OPW( HREG_INT_EN, 0 ); //;?workaround against dying F/W on subsequent hcf_connect calls
} else { //connect /* 0 */
io_addr = io_base;
}
#if 0 //;? if a subsequent hcf_connect is preceeded by an hcf_disconnect the wakeup is not needed !!
#if HCF_SLEEP
OUT_PORT_WORD( .....+HREG_IO, HREG_IO_WAKEUP_ASYNC ); //OPW not yet useable
MSF_WAIT(800); // MSF-defined function to wait n microseconds.
note that MSF_WAIT uses not yet defined!!!! IFB_IOBase and IFB_TickIni (via PROT_CNT_INI)
so be carefull if this code is restored
#endif // HCF_SLEEP
#endif // 0
#if ( (HCF_TYPE) & HCF_TYPE_PRELOADED ) == 0 //switch clock back for SEEPROM access !!!
OUT_PORT_WORD( io_addr + HREG_CMD, HCMD_INI ); //OPW not yet useable
prot_cnt = INI_TICK_INI;
HCF_WAIT_WHILE( (IN_PORT_WORD( io_addr + HREG_EV_STAT) & HREG_EV_CMD) == 0 );
OUT_PORT_WORD( (io_addr + HREG_IO), HREG_IO_SRESET ); //OPW not yet useable /* 2a*/
#endif // HCF_TYPE_PRELOADED
for ( q = (hcf_8*)(&ifbp->IFB_Magic); q > (hcf_8*)ifbp; *--q = 0 ) /*NOP*/; /* 4 */
ifbp->IFB_Magic = HCF_MAGIC;
ifbp->IFB_Version = IFB_VERSION;
#if defined MSF_COMPONENT_ID //a new IFB demonstrates how dirty the solution is
xxxx[xxxx_PRI_IDENTITY_OFFSET] = NULL; //IFB_PRIIdentity placeholder 0xFD02
xxxx[xxxx_PRI_IDENTITY_OFFSET+1] = NULL; //IFB_PRISup placeholder 0xFD03
#endif // MSF_COMPONENT_ID
#if (HCF_TALLIES) & ( HCF_TALLIES_NIC | HCF_TALLIES_HCF )
ifbp->IFB_TallyLen = 1 + 2 * (HCF_NIC_TAL_CNT + HCF_HCF_TAL_CNT); //convert # of Tallies to L value for LTV
ifbp->IFB_TallyTyp = CFG_TALLIES; //IFB_TallyTyp: set T value
#endif // HCF_TALLIES_NIC / HCF_TALLIES_HCF
ifbp->IFB_IOBase = io_addr; //set IO_Base asap, so asserts via HREG_SW_2 don't harm
ifbp->IFB_IORange = HREG_IO_RANGE;
ifbp->IFB_CntlOpt = USE_16BIT;
#if HCF_ASSERT
assert_ifbp = ifbp;
ifbp->IFB_AssertLvl = 1;
#if (HCF_ASSERT) & HCF_ASSERT_LNK_MSF_RTN
if ( io_base != HCF_DISCONNECT ) {
ifbp->IFB_AssertRtn = (MSF_ASSERT_RTNP)msf_assert; /* 6 */
}
#endif // HCF_ASSERT_LNK_MSF_RTN
#if (HCF_ASSERT) & HCF_ASSERT_MB //build the structure to pass the assert info to hcf_put_info
ifbp->IFB_AssertStrct.len = sizeof(ifbp->IFB_AssertStrct)/sizeof(hcf_16) - 1;
ifbp->IFB_AssertStrct.typ = CFG_MB_INFO;
ifbp->IFB_AssertStrct.base_typ = CFG_MB_ASSERT;
ifbp->IFB_AssertStrct.frag_cnt = 1;
ifbp->IFB_AssertStrct.frag_buf[0].frag_len =
( offsetof(IFB_STRCT, IFB_AssertLvl) - offsetof(IFB_STRCT, IFB_AssertLine) ) / sizeof(hcf_16);
ifbp->IFB_AssertStrct.frag_buf[0].frag_addr = &ifbp->IFB_AssertLine;
#endif // HCF_ASSERT_MB
#endif // HCF_ASSERT
IF_PROT_TIME( prot_cnt = ifbp->IFB_TickIni = INI_TICK_INI; )
#if ( (HCF_TYPE) & HCF_TYPE_PRELOADED ) == 0
//!! No asserts before Reset-bit in HREG_IO is cleared
OPW( HREG_IO, 0x0000 ); //OPW useable /* 2b*/
HCF_WAIT_WHILE( (IPW( HREG_EV_STAT) & HREG_EV_CMD) == 0 );
IF_PROT_TIME( HCFASSERT( prot_cnt, IPW( HREG_EV_STAT) ) )
IF_PROT_TIME( if ( prot_cnt ) prot_cnt = ifbp->IFB_TickIni; )
#endif // HCF_TYPE_PRELOADED
//!! No asserts before Reset-bit in HREG_IO is cleared
HCFASSERT( DO_ASSERT, MERGE_2( HCF_ASSERT, 0xCAF0 ) ) //just to proof that the complete assert machinery is working
HCFASSERT( xa != CFG_FW_IDENTITY, 0 ) // assert if hcf_connect is called without intervening hcf_disconnect.
HCFASSERT( ((hcf_32)(void*)ifbp & (HCF_ALIGN-1) ) == 0, (hcf_32)(void*)ifbp )
HCFASSERT( (io_addr & 0x003F) == 0, io_addr )
//if Busy bit in Cmd register
if (IPW( HREG_CMD ) & HCMD_BUSY ) { /* 8 */
//. Ack all to unblock a (possibly) blocked cmd pipe line
OPW( HREG_EV_ACK, ~HREG_EV_SLEEP_REQ );
//. Wait for Busy bit drop in Cmd register
//. Wait for Cmd bit raise in Ev register
HCF_WAIT_WHILE( ( IPW( HREG_CMD ) & HCMD_BUSY ) && (IPW( HREG_EV_STAT) & HREG_EV_CMD) == 0 );
IF_PROT_TIME( HCFASSERT( prot_cnt, IPW( HREG_EV_STAT) ) ) /* if prot_cnt == 0, cmd_exe will fail, causing DEFUNCT */
}
OPW( HREG_EV_ACK, ~HREG_EV_SLEEP_REQ );
#if ( (HCF_TYPE) & HCF_TYPE_PRELOADED ) == 0 /*12*/
(void)cmd_exe( ifbp, HCMD_INI, 0 );
#endif // HCF_TYPE_PRELOADED
if ( io_base != HCF_DISCONNECT ) {
rc = init( ifbp ); /*14*/
if ( rc == HCF_SUCCESS ) {
x.len = 2;
x.typ = CFG_NIC_BUS_TYPE;
(void)hcf_get_info( ifbp, &x );
ifbp->IFB_BusType = x.val[0];
//CFG_NIC_BUS_TYPE not supported -> default 32 bits/DMA, MSF has to overrule via CFG_CNTL_OPT
if ( x.len == 0 || x.val[0] == 0x0002 || x.val[0] == 0x0003 ) {
#if (HCF_IO) & HCF_IO_32BITS
ifbp->IFB_CntlOpt &= ~USE_16BIT; //reset USE_16BIT
#endif // HCF_IO_32BITS
#if HCF_DMA
ifbp->IFB_CntlOpt |= USE_DMA; //SET DMA
#else
ifbp->IFB_IORange = 0x40 /*i.s.o. HREG_IO_RANGE*/;
#endif // HCF_DMA
}
}
} else HCFASSERT( ( ifbp->IFB_Magic ^= HCF_MAGIC ) == 0, ifbp->IFB_Magic ) /*NOP*/;
/* of above HCFASSERT only the side effect is needed, NOP in case HCFASSERT is dummy */
ifbp->IFB_IOBase = io_base; /* 0*/
return rc;
} // hcf_connect
#if HCF_DMA
/************************************************************************************************************
* Function get_frame_lst
* - resolve the "last host-owned descriptor" problems when a descriptor list is reclaimed by the MSF.
*
* The FrameList to be reclaimed as well as the DescriptorList always start in IFB_FirstDesc[tx_rx_flag]
* and this is always the "current" DELWA Descriptor.
*
* If a FrameList is available, the last descriptor of the FrameList to turned into a new DELWA Descriptor:
* - a copy is made from the information in the last descriptor of the FrameList into the current
* DELWA Descriptor
* - the remainder of the DescriptorList is detached from the copy by setting the next_desc_addr at NULL
* - the DMA control bits of the copy are cleared to do not confuse the MSF
* - the copy of the last descriptor (i.e. the "old" DELWA Descriptor) is chained to the prev Descriptor
* of the FrameList, thus replacing the original last Descriptor of the FrameList.
* - IFB_FirstDesc is changed to the address of that replaced (original) last descriptor of the FrameList,
* i.e. the "new" DELWA Descriptor.
*
* This function makes a copy of that last host-owned descriptor, so the MSF will get a copy of the descriptor.
* On top of that, it adjusts DMA related fields in the IFB structure.
// perform a copying-scheme to circumvent the 'last host owned descriptor cannot be reclaimed' limitation imposed by H2.5's DMA hardware design
// a 'reclaim descriptor' should be available in the HCF:
*
* Returns: address of the first descriptor of the FrameList
*
8: Be careful once you start re-ordering the steps in the copy process, that it still works for cases
* of FrameLists of 1, 2 and more than 2 descriptors
*
* Input parameters:
* tx_rx_flag : specifies 'transmit' or 'receive' descriptor.
*
************************************************************************************************************/
HCF_STATIC DESC_STRCT*
get_frame_lst( IFBP ifbp, int tx_rx_flag )
{
DESC_STRCT *head = ifbp->IFB_FirstDesc[tx_rx_flag];
DESC_STRCT *copy, *p, *prev;
HCFASSERT( tx_rx_flag == DMA_RX || tx_rx_flag == DMA_TX, tx_rx_flag )
//if FrameList
if ( head ) {
//. search for last descriptor of first FrameList
p = prev = head;
while ( ( p->BUF_SIZE & DESC_EOP ) == 0 && p->next_desc_addr ) {
if ( ( ifbp->IFB_CntlOpt & DMA_ENABLED ) == 0 ) { //clear control bits when disabled
p->BUF_CNT &= DESC_CNT_MASK;
}
prev = p;
p = p->next_desc_addr;
}
//. if DMA enabled
if ( ifbp->IFB_CntlOpt & DMA_ENABLED ) {
//. . if last descriptor of FrameList is DMA owned
//. . or if FrameList is single (DELWA) Descriptor
if ( p->BUF_CNT & DESC_DMA_OWNED || head->next_desc_addr == NULL ) {
//. . . refuse to return FrameList to caller
head = NULL;
}
}
}
//if returnable FrameList found
if ( head ) {
//. if FrameList is single (DELWA) Descriptor (implies DMA disabled)
if ( head->next_desc_addr == NULL ) {
//. . clear DescriptorList
/*;?ifbp->IFB_LastDesc[tx_rx_flag] =*/ ifbp->IFB_FirstDesc[tx_rx_flag] = NULL;
//. else
} else {
//. . strip hardware-related bits from last descriptor
//. . remove DELWA Descriptor from head of DescriptorList
copy = head;
head = head->next_desc_addr;
//. . exchange first (Confined) and last (possibly imprisoned) Descriptor
copy->buf_phys_addr = p->buf_phys_addr;
copy->buf_addr = p->buf_addr;
copy->BUF_SIZE = p->BUF_SIZE &= DESC_CNT_MASK; //get rid of DESC_EOP and possibly DESC_SOP
copy->BUF_CNT = p->BUF_CNT &= DESC_CNT_MASK; //get rid of DESC_DMA_OWNED
#if (HCF_EXT) & HCF_DESC_STRCT_EXT
copy->DESC_MSFSup = p->DESC_MSFSup;
#endif // HCF_DESC_STRCT_EXT
//. . turn into a DELWA Descriptor
p->buf_addr = NULL;
//. . chain copy to prev /* 8*/
prev->next_desc_addr = copy;
//. . detach remainder of the DescriptorList from FrameList
copy->next_desc_addr = NULL;
copy->next_desc_phys_addr = 0xDEAD0000; //! just to be nice, not really needed
//. . save the new start (i.e. DELWA Descriptor) in IFB_FirstDesc
ifbp->IFB_FirstDesc[tx_rx_flag] = p;
}
//. strip DESC_SOP from first descriptor
head->BUF_SIZE &= DESC_CNT_MASK;
//head->BUF_CNT &= DESC_CNT_MASK; get rid of DESC_DMA_OWNED
head->next_desc_phys_addr = 0xDEAD0000; //! just to be nice, not really needed
}
//return the just detached FrameList (if any)
return head;
} // get_frame_lst
/************************************************************************************************************
* Function put_frame_lst
*
* This function
*
* Returns: address of the first descriptor of the FrameList
*
* Input parameters:
* tx_rx_flag : specifies 'transmit' or 'receive' descriptor.
*
* The following list should be kept in sync with hcf_dma_tx/rx_put, in order to get them in the WCI-spec !!!!
* Assert fails if
* - DMA is not enabled
* - descriptor list is NULL
* - a descriptor in the descriptor list is not double word aligned
* - a count of size field of a descriptor contains control bits, i.e. bits in the high order nibble.
* - the DELWA descriptor is not a "singleton" DescriptorList.
* - the DELWA descriptor is not the first Descriptor supplied
* - a non_DMA descriptor is supplied before the DELWA Descriptor is supplied
* - Possibly more checks could be added !!!!!!!!!!!!!
*.NOTICE
* The asserts marked with *sc* are really sanity checks for the HCF, they can (supposedly) not be influenced
* by incorrect MSF behavior
// The MSF is required to supply the HCF with a single descriptor for MSF tx reclaim purposes.
// This 'reclaim descriptor' can be recognized by the fact that its buf_addr field is zero.
*********************************************************************************************
* Although not required from a hardware perspective:
* - make each descriptor in this rx-chain DMA-owned.
* - Also set the count to zero. EOP and SOP bits are also cleared.
*********************************************************************************************/
HCF_STATIC void
put_frame_lst( IFBP ifbp, DESC_STRCT *descp, int tx_rx_flag )
{
DESC_STRCT *p = descp;
hcf_16 port;
HCFASSERT( ifbp->IFB_CntlOpt & USE_DMA, ifbp->IFB_CntlOpt) //only hcf_dma_tx_put must also be DMA_ENABLED
HCFASSERT( tx_rx_flag == DMA_RX || tx_rx_flag == DMA_TX, tx_rx_flag )
HCFASSERT( p , 0 )
while ( p ) {
HCFASSERT( ((hcf_32)p & 3 ) == 0, (hcf_32)p )
HCFASSERT( (p->BUF_CNT & ~DESC_CNT_MASK) == 0, p->BUF_CNT )
HCFASSERT( (p->BUF_SIZE & ~DESC_CNT_MASK) == 0, p->BUF_SIZE )
p->BUF_SIZE &= DESC_CNT_MASK; //!!this SHOULD be superfluous in case of correct MSF
p->BUF_CNT &= tx_rx_flag == DMA_RX ? 0 : DESC_CNT_MASK; //!!this SHOULD be superfluous in case of correct MSF
p->BUF_CNT |= DESC_DMA_OWNED;
if ( p->next_desc_addr ) {
// HCFASSERT( p->buf_addr && p->buf_phys_addr && p->BUF_SIZE && +/- p->BUF_SIZE, ... )
HCFASSERT( p->next_desc_addr->desc_phys_addr, (hcf_32)p->next_desc_addr )
p->next_desc_phys_addr = p->next_desc_addr->desc_phys_addr;
} else { //
p->next_desc_phys_addr = 0;
if ( p->buf_addr == NULL ) { // DELWA Descriptor
HCFASSERT( descp == p, (hcf_32)descp ) //singleton DescriptorList
HCFASSERT( ifbp->IFB_FirstDesc[tx_rx_flag] == NULL, (hcf_32)ifbp->IFB_FirstDesc[tx_rx_flag])
HCFASSERT( ifbp->IFB_LastDesc[tx_rx_flag] == NULL, (hcf_32)ifbp->IFB_LastDesc[tx_rx_flag])
descp->BUF_CNT = 0; //&= ~DESC_DMA_OWNED;
ifbp->IFB_FirstDesc[tx_rx_flag] = descp;
// part of alternative ifbp->IFB_LastDesc[tx_rx_flag] = ifbp->IFB_FirstDesc[tx_rx_flag] = descp;
// if "recycling" a FrameList
// (e.g. called from hcf_cntl( HCF_CNTL_ENABLE )
// . prepare for activation DMA controller
// part of alternative descp = descp->next_desc_addr;
} else { //a "real" FrameList, hand it over to the DMA engine
HCFASSERT( ifbp->IFB_FirstDesc[tx_rx_flag], (hcf_32)descp )
HCFASSERT( ifbp->IFB_LastDesc[tx_rx_flag], (hcf_32)descp )
HCFASSERT( ifbp->IFB_LastDesc[tx_rx_flag]->next_desc_addr == NULL,
(hcf_32)ifbp->IFB_LastDesc[tx_rx_flag]->next_desc_addr)
// p->buf_cntl.cntl_stat |= DESC_DMA_OWNED;
ifbp->IFB_LastDesc[tx_rx_flag]->next_desc_addr = descp;
ifbp->IFB_LastDesc[tx_rx_flag]->next_desc_phys_addr = descp->desc_phys_addr;
port = HREG_RXDMA_PTR32;
if ( tx_rx_flag ) {
p->BUF_SIZE |= DESC_EOP; // p points at the last descriptor in the caller-supplied descriptor chain
descp->BUF_SIZE |= DESC_SOP;
port = HREG_TXDMA_PTR32;
}
OUT_PORT_DWORD( (ifbp->IFB_IOBase + port), descp->desc_phys_addr );
}
ifbp->IFB_LastDesc[tx_rx_flag] = p;
}
p = p->next_desc_addr;
}
} // put_frame_lst
/************************************************************************************************************
*
*.MODULE DESC_STRCT* hcf_dma_rx_get( IFBP ifbp )
*.PURPOSE decapsulate a message and provides that message to the MSF.
* reclaim all descriptors in the rx descriptor chain.
*
*.ARGUMENTS
* ifbp address of the Interface Block
*
*.RETURNS
* pointer to a FrameList
*
*.DESCRIPTION
* hcf_dma_rx_get is intended to return a received frame when such a frame is deposited in Host memory by the
* DMA engine. In addition hcf_dma_rx_get can be used to reclaim all descriptors in the rx descriptor chain
* when the DMA Engine is disabled, e.g. as part of a driver unloading strategy.
* hcf_dma_rx_get must be called repeatedly by the MSF when hcf_service_nic signals availability of a rx frame
* through the HREG_EV_RDMAD flag of IFB_DmaPackets. The calling must stop when a NULL pointer is returned, at
* which time the HREG_EV_RDMAD flag is also cleared by the HCF to arm the mechanism for the next frame
* reception.
* Regardless whether the DMA Engine is currently enabled (as controlled via hcf_cntl), if the DMA controller
* deposited an Rx-frame in the Rx-DescriptorList, this frame is detached from the Rx-DescriptorList,
* transformed into a FrameList (i.e. updating the housekeeping fields in the descriptors) and returned to the
* caller.
* If no such Rx-frame is available in the Rx-DescriptorList, the behavior of hcf_dma_rx_get depends on the
* status of the DMA Engine.
* If the DMA Engine is enabled, a NULL pointer is returned.
* If the DMA Engine is disabled, the following strategy is used:
* - the complete Rx-DescriptorList is returned. The DELWA Descriptor is not part of the Rx-DescriptorList.
* - If there is no Rx-DescriptorList, the DELWA Descriptor is returned.
* - If there is no DELWA Descriptor, a NULL pointer is returned.
*
* If the MSF performs an disable/enable sequence without exhausting the Rx-DescriptorList as described above,
* the enable command will reset all house keeping information, i.e. already received but not yet by the MSF
* retrieved frames are lost and the next frame will be received starting with the oldest descriptor.
*
* The HCF can be used in 2 fashions: with and without decapsulation for data transfer.
* This is controlled at compile time by the HCF_ENC bit of the HCF_ENCAP system constant.
* If appropriate, decapsulation is done by moving some data inside the buffers and updating the descriptors
* accordingly.
*!! ;?????where did I describe why a simple manipulation with the count values does not suffice?
*
*.DIAGRAM
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
DESC_STRCT*
hcf_dma_rx_get (IFBP ifbp)
{
DESC_STRCT *descp; // pointer to start of FrameList
descp = get_frame_lst( ifbp, DMA_RX );
if ( descp && descp->buf_addr ) //!be aware of the missing curly bracket
//skip decapsulation at confined descriptor
#if (HCF_ENCAP) == HCF_ENC
#if (HCF_TYPE) & HCF_TYPE_CCX
if ( ifbp->IFB_CKIPStat == HCF_ACT_CCX_OFF )
#endif // HCF_TYPE_CCX
{
int i;
DESC_STRCT *p = descp->next_desc_addr; //pointer to 2nd descriptor of frame
HCFASSERT(p, 0)
// The 2nd descriptor contains (maybe) a SNAP header plus part or whole of the payload.
//determine decapsulation sub-flag in RxFS
i = *(wci_recordp)&descp->buf_addr[HFS_STAT] & ( HFS_STAT_MSG_TYPE | HFS_STAT_ERR );
if ( i == HFS_STAT_TUNNEL ||
( i == HFS_STAT_1042 && hcf_encap( (wci_bufp)&p->buf_addr[HCF_DASA_SIZE] ) != ENC_TUNNEL )) {
// The 2nd descriptor contains a SNAP header plus part or whole of the payload.
HCFASSERT( p->BUF_CNT == (p->buf_addr[5] + (p->buf_addr[4]<<8) + 2*6 + 2 - 8), p->BUF_CNT )
// perform decapsulation
HCFASSERT(p->BUF_SIZE >=8, p->BUF_SIZE)
// move SA[2:5] in the second buffer to replace part of the SNAP header
for ( i=3; i >= 0; i--) p->buf_addr[i+8] = p->buf_addr[i];
// copy DA[0:5], SA[0:1] from first buffer to second buffer
for ( i=0; i<8; i++) p->buf_addr[i] = descp->buf_addr[HFS_ADDR_DEST + i];
// make first buffer shorter in count
descp->BUF_CNT = HFS_ADDR_DEST;
}
}
#endif // HCF_ENC
if ( descp == NULL ) ifbp->IFB_DmaPackets &= (hcf_16)~HREG_EV_RDMAD; //;?could be integrated into get_frame_lst
HCFLOGEXIT( HCF_TRACE_DMA_RX_GET )
return descp;
} // hcf_dma_rx_get
/************************************************************************************************************
*
*.MODULE void hcf_dma_rx_put( IFBP ifbp, DESC_STRCT *descp )
*.PURPOSE supply buffers for receive purposes.
* supply the Rx-DELWA descriptor.
*
*.ARGUMENTS
* ifbp address of the Interface Block
* descp address of a DescriptorList
*
*.RETURNS N.A.
*
*.DESCRIPTION
* This function is called by the MSF to supply the HCF with new/more buffers for receive purposes.
* The HCF can be used in 2 fashions: with and without encapsulation for data transfer.
* This is controlled at compile time by the HCF_ENC bit of the HCF_ENCAP system constant.
* As a consequence, some additional constaints apply to the number of descriptor and the buffers associated
* with the first 2 descriptors. Independent of the encapsulation feature, the COUNT fields are ignored.
* A special case is the supplying of the DELWA descriptor, which must be supplied as the first descriptor.
*
* Assert fails if
* - ifbp has a recognizable out-of-range value.
* - NIC interrupts are not disabled while required by parameter action.
* - in case decapsulation by the HCF is selected:
* - The first databuffer does not have the exact size corresponding with the RxFS up to the 802.3 DestAddr
* field (== 29 words).
* - The FrameList does not consists of at least 2 Descriptors.
* - The second databuffer does not have the minimum size of 8 bytes.
*!! The 2nd part of the list of asserts should be kept in sync with put_frame_lst, in order to get
*!! them in the WCI-spec !!!!
* - DMA is not enabled
* - descriptor list is NULL
* - a descriptor in the descriptor list is not double word aligned
* - a count of size field of a descriptor contains control bits, i.e. bits in the high order nibble.
* - the DELWA descriptor is not a "singleton" DescriptorList.
* - the DELWA descriptor is not the first Descriptor supplied
* - a non_DMA descriptor is supplied before the DELWA Descriptor is supplied
*!! - Possibly more checks could be added !!!!!!!!!!!!!
*
*.DIAGRAM
*
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
void
hcf_dma_rx_put( IFBP ifbp, DESC_STRCT *descp )
{
HCFLOGENTRY( HCF_TRACE_DMA_RX_PUT, 0xDA01 )
HCFASSERT( ifbp->IFB_Magic == HCF_MAGIC, ifbp->IFB_Magic )
HCFASSERT_INT
put_frame_lst( ifbp, descp, DMA_RX );
#if HCF_ASSERT && (HCF_ENCAP) == HCF_ENC
if ( descp->buf_addr ) {
HCFASSERT( descp->BUF_SIZE == HCF_DMA_RX_BUF1_SIZE, descp->BUF_SIZE )
HCFASSERT( descp->next_desc_addr, 0 ) // first descriptor should be followed by another descriptor
// The second DB is for SNAP and payload purposes. It should be a minimum of 12 bytes in size.
HCFASSERT( descp->next_desc_addr->BUF_SIZE >= 12, descp->next_desc_addr->BUF_SIZE )
}
#endif // HCFASSERT / HCF_ENC
HCFLOGEXIT( HCF_TRACE_DMA_RX_PUT )
} // hcf_dma_rx_put
/************************************************************************************************************
*
*.MODULE DESC_STRCT* hcf_dma_tx_get( IFBP ifbp )
*.PURPOSE DMA mode: reclaims and decapsulates packets in the tx descriptor chain if:
* - A Tx packet has been copied from host-RAM into NIC-RAM by the DMA engine
* - The Hermes/DMAengine have been disabled
*
*.ARGUMENTS
* ifbp address of the Interface Block
*
*.RETURNS
* pointer to a reclaimed Tx packet.
*
*.DESCRIPTION
* impact of the disable command:
* When a non-empty pool of Tx descriptors exists (created by means of hcf_dma_put_tx), the MSF
* is supposed to empty that pool by means of hcf_dma_tx_get calls after the disable in an
* disable/enable sequence.
*
*.DIAGRAM
*
*.NOTICE
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
DESC_STRCT*
hcf_dma_tx_get( IFBP ifbp )
{
DESC_STRCT *descp; // pointer to start of FrameList
descp = get_frame_lst( ifbp, DMA_TX );
if ( descp && descp->buf_addr ) //!be aware of the missing curly bracket
//skip decapsulation at confined descriptor
#if (HCF_ENCAP) == HCF_ENC
if ( ( descp->BUF_CNT == HFS_TYPE )
#if (HCF_TYPE) & HCF_TYPE_CCX
|| ( descp->BUF_CNT == HFS_DAT )
#endif // HCF_TYPE_CCX
) { // perform decapsulation if needed
descp->next_desc_addr->buf_phys_addr -= HCF_DASA_SIZE;
descp->next_desc_addr->BUF_CNT += HCF_DASA_SIZE;
}
#endif // HCF_ENC
if ( descp == NULL ) { //;?could be integrated into get_frame_lst
ifbp->IFB_DmaPackets &= (hcf_16)~HREG_EV_TDMAD;
}
HCFLOGEXIT( HCF_TRACE_DMA_TX_GET )
return descp;
} // hcf_dma_tx_get
/************************************************************************************************************
*
*.MODULE void hcf_dma_tx_put( IFBP ifbp, DESC_STRCT *descp, hcf_16 tx_cntl )
*.PURPOSE puts a packet in the Tx DMA queue in host ram and kicks off the TxDma engine.
* supply the Tx-DELWA descriptor.
*
*.ARGUMENTS
* ifbp address of the Interface Block
* descp address of Tx Descriptor Chain (i.e. a single Tx frame)
* tx_cntl indicates MAC-port and (Hermes) options
*
*.RETURNS N.A.
*
*.DESCRIPTION
* The HCF can be used in 2 fashions: with and without encapsulation for data transfer.
* This is controlled at compile time by the HCF_ENC bit of the HCF_ENCAP system constant.
*
* Regardless of the HCF_ENCAP system constant, the descriptor list created to describe the frame to be
* transmitted, must supply space to contain the 802.11 header, preceding the actual frame to be transmitted.
* Basically, this only supplies working storage to the HCF which passes this on to the DMA engine.
* As a consequence the contents of this space do not matter.
* Nevertheless BUF_CNT must take in account this storage.
* This working space to contain the 802.11 header may not be fragmented, the first buffer must be
* sufficiently large to contain at least the 802.11 header, i.e. HFS_ADDR_DEST (29 words or 0x3A bytes).
* This way, the HCF can simply, regardless whether or not the HCF encapsulates the frame, write the parameter
* tx_cntl at offset 0x36 (HFS_TX_CNTL) in the first buffer.
* Note that it is allowed to have part or all of the actual frame represented by the first descriptor as long
* as the requirement for storage for the 802.11 header is met, i.e. the 802.3 frame starts at offset
* HFS_ADDR_DEST.
* Except for the Assert on the 1st buffer in case of Encapsualtion, the SIZE fields are ignored.
*
* In case the encapsulation feature is compiled in, there are the following additional requirements.
* o The BUF_CNT of the first buffer changes from a minimum of 0x3A bytes to exactly 0x3A, i.e. the workspace
* to store the 802.11 header
* o The BUF_SIZE of the first buffer is at least the space needed to store the
* - 802.11 header (29 words)
* - 802.3 header, i.e. 12 bytes addressing information and 2 bytes length field
* - 6 bytes SNAP-header
* This results in 39 words or 0x4E bytes or HFS_TYPE.
* Note that if the BUF_SIZE is larger than 0x4E, this surplus is not used.
* o The actual frame begins in the 2nd descriptor (which is already implied by the BUF_CNT == 0x3A requirement) and the associated buffer contains at least the 802.3 header, i.e. the 14 bytes representing addressing information and length/type field
*
* When the HCF does not encapsulates (i.e. length/type field <= 1500), no changes are made to descriptors
* or buffers.
*
* When the HCF actually encapsulates (i.e. length/type field > 1500), it successively writes, starting at
* offset HFS_ADDR_DEST (0x3A) in the first buffer:
* - the 802.3 addressing information, copied from the begin of the second buffer
* - the frame length, derived from the total length of the individual fragments, corrected for the SNAP
* header length and Type field and ignoring the Destination Address, Source Address and Length field
* - the appropriate snap header (Tunnel or 1042, depending on the value of the type field).
*
* The information in the first two descriptors is adjusted accordingly:
* - the first descriptor count is changed from 0x3A to 0x4E (HFS_TYPE), which matches 0x3A + 12 + 2 + 6
* - the second descriptor count is decreased by 12, being the moved addressing information
* - the second descriptor (physical) buffer address is increased by 12.
*
* When the descriptors are returned by hcf_dma_tx_get, the transformation of the first two descriptors is
* undone.
*
* Under any of the above scenarios, the assert BUF_CNT <= BUF_SIZE must be true for all descriptors
* In case of encapsulation, BUF_SIZE of the 1st descriptor is asserted to be at least HFS_TYPE (0x4E), so it is NOT tested.
*
* Assert fails if
* - ifbp has a recognizable out-of-range value.
* - tx_cntl has a recognizable out-of-range value.
* - NIC interrupts are not disabled while required by parameter action.
* - in case encapsulation by the HCF is selected:
* - The FrameList does not consists of at least 2 Descriptors.
* - The first databuffer does not contain exactly the (space for) the 802.11 header (== 28 words)
* - The first databuffer does not have a size to additionally accomodate the 802.3 header and the
* SNAP header of the frame after encapsulation (== 39 words).
* - The second databuffer does not contain at least DA, SA and 'type/length' (==14 bytes or 7 words)
*!! The 2nd part of the list of asserts should be kept in sync with put_frame_lst, in order to get
*!! them in the WCI-spec !!!!
* - DMA is not enabled
* - descriptor list is NULL
* - a descriptor in the descriptor list is not double word aligned
* - a count of size field of a descriptor contains control bits, i.e. bits in the high order nibble.
* - the DELWA descriptor is not a "singleton" DescriptorList.
* - the DELWA descriptor is not the first Descriptor supplied
* - a non_DMA descriptor is supplied before the DELWA Descriptor is supplied
*!! - Possibly more checks could be added !!!!!!!!!!!!!
*.DIAGRAM
*
*.NOTICE
*
*.ENDDOC END DOCUMENTATION
*
*
*1: Write tx_cntl parameter to HFS_TX_CNTL field into the Hermes-specific header in buffer 1
*4: determine whether encapsulation is needed and write the type (tunnel or 1042) already at the appropriate
* offset in the 1st buffer
*6: Build the encapsualtion enveloppe in the free space at the end of the 1st buffer
* - Copy DA/SA fields from the 2nd buffer
* - Calculate total length of the message (snap-header + type-field + the length of all buffer fragments
* associated with the 802.3 frame (i.e all descriptors except the first), but not the DestinationAddress,
* SourceAddress and lenght-field)
* Assert the message length
* Write length. Note that the message is in BE format, hence on LE platforms the length must be converted
* ;? THIS IS NOT WHAT CURRENTLY IS IMPLEMENTED
* - Write snap header. Note that the last byte of the snap header is NOT copied, that byte is already in
* place as result of the call to hcf_encap.
* Note that there are many ways to skin a cat. To express the offsets in the 1st buffer while writing
* the snap header, HFS_TYPE is choosen as a reference point to make it easier to grasp that the snap header
* and encapsualtion type are at least relative in the right.
*8: modify 1st descriptor to reflect moved part of the 802.3 header + Snap-header
* modify 2nd descriptor to skip the moved part of the 802.3 header (DA/SA
*10: set each descriptor to 'DMA owned', clear all other control bits.
* Set SOP bit on first descriptor. Set EOP bit on last descriptor.
*12: Either append the current frame to an existing descriptor list or
*14: create a list beginning with the current frame
*16: remember the new end of the list
*20: hand the frame over to the DMA engine
************************************************************************************************************/
void
hcf_dma_tx_put( IFBP ifbp, DESC_STRCT *descp, hcf_16 tx_cntl )
{
DESC_STRCT *p = descp->next_desc_addr;
int i;
#if HCF_ASSERT
int x = ifbp->IFB_FWIdentity.comp_id == COMP_ID_FW_AP ? tx_cntl & ~HFS_TX_CNTL_PORT : tx_cntl;
HCFASSERT( (x & ~HCF_TX_CNTL_MASK ) == 0, tx_cntl )
#endif // HCF_ASSERT
HCFLOGENTRY( HCF_TRACE_DMA_TX_PUT, 0xDA03 )
HCFASSERT( ifbp->IFB_Magic == HCF_MAGIC, ifbp->IFB_Magic )
HCFASSERT_INT
HCFASSERT( ( ifbp->IFB_CntlOpt & (USE_DMA|DMA_ENABLED) ) == (USE_DMA|DMA_ENABLED), ifbp->IFB_CntlOpt)
if ( descp->buf_addr ) {
*(hcf_16*)(descp->buf_addr + HFS_TX_CNTL) = tx_cntl; /*1*/
#if (HCF_ENCAP) == HCF_ENC
HCFASSERT( descp->next_desc_addr, 0 ) //at least 2 descripors
HCFASSERT( descp->BUF_CNT == HFS_ADDR_DEST, descp->BUF_CNT ) //exact length required for 1st buffer
HCFASSERT( descp->BUF_SIZE >= HCF_DMA_TX_BUF1_SIZE, descp->BUF_SIZE ) //minimal storage for encapsulation
HCFASSERT( p->BUF_CNT >= 14, p->BUF_CNT ); //at least DA, SA and 'type' in 2nd buffer
#if (HCF_TYPE) & HCF_TYPE_CCX
/* if we are doing PPK +/- CMIC, or we are sending a DDP frame */
if ( ( ifbp->IFB_CKIPStat == HCF_ACT_CCX_ON ) ||
( ( p->BUF_CNT >= 20 ) && ( ifbp->IFB_CKIPStat == HCF_ACT_CCX_OFF ) &&
( p->buf_addr[12] == 0xAA ) && ( p->buf_addr[13] == 0xAA ) &&
( p->buf_addr[14] == 0x03 ) && ( p->buf_addr[15] == 0x00 ) &&
( p->buf_addr[16] == 0x40 ) && ( p->buf_addr[17] == 0x96 ) &&
( p->buf_addr[18] == 0x00 ) && ( p->buf_addr[19] == 0x00 )))
{
/* copy the DA/SA to the first buffer */
for ( i = 0; i < HCF_DASA_SIZE; i++ ) {
descp->buf_addr[i + HFS_ADDR_DEST] = p->buf_addr[i];
}
/* calculate the length of the second fragment only */
i = 0;
do { i += p->BUF_CNT; } while( p = p->next_desc_addr );
i -= HCF_DASA_SIZE ;
/* convert the length field to big endian, using the endian friendly macros */
i = CNV_SHORT_TO_BIG(i); //!! this converts ONLY on LE platforms, how does that relate to the non-CCX code
*(hcf_16*)(&descp->buf_addr[HFS_LEN]) = (hcf_16)i;
descp->BUF_CNT = HFS_DAT;
// modify 2nd descriptor to skip the 'Da/Sa' fields
descp->next_desc_addr->buf_phys_addr += HCF_DASA_SIZE;
descp->next_desc_addr->BUF_CNT -= HCF_DASA_SIZE;
}
else
#endif // HCF_TYPE_CCX
{
descp->buf_addr[HFS_TYPE-1] = hcf_encap(&descp->next_desc_addr->buf_addr[HCF_DASA_SIZE]); /*4*/
if ( descp->buf_addr[HFS_TYPE-1] != ENC_NONE ) {
for ( i=0; i < HCF_DASA_SIZE; i++ ) { /*6*/
descp->buf_addr[i + HFS_ADDR_DEST] = descp->next_desc_addr->buf_addr[i];
}
i = sizeof(snap_header) + 2 - ( 2*6 + 2 );
do { i += p->BUF_CNT; } while ( ( p = p->next_desc_addr ) != NULL );
*(hcf_16*)(&descp->buf_addr[HFS_LEN]) = CNV_END_SHORT(i); //!! this converts on ALL platforms, how does that relate to the CCX code
for ( i=0; i < sizeof(snap_header) - 1; i++) {
descp->buf_addr[HFS_TYPE - sizeof(snap_header) + i] = snap_header[i];
}
descp->BUF_CNT = HFS_TYPE; /*8*/
descp->next_desc_addr->buf_phys_addr += HCF_DASA_SIZE;
descp->next_desc_addr->BUF_CNT -= HCF_DASA_SIZE;
}
}
#endif // HCF_ENC
}
put_frame_lst( ifbp, descp, DMA_TX );
HCFLOGEXIT( HCF_TRACE_DMA_TX_PUT )
} // hcf_dma_tx_put
#endif // HCF_DMA
#if (HCF_DL_ONLY) == 0
/************************************************************************************************************
*
*.MODULE hcf_8 hcf_encap( wci_bufp type )
*.PURPOSE test whether RFC1042 or Bridge-Tunnel encapsulation is needed.
*
*.ARGUMENTS
* type (Far) pointer to the (Big Endian) Type/Length field in the message
*
*.RETURNS
* ENC_NONE len/type is "len" ( (BIG_ENDIAN)type <= 1500 )
* ENC_TUNNEL len/type is "type" and 0x80F3 or 0x8137
* ENC_1042 len/type is "type" but not 0x80F3 or 0x8137
*
*.CONDITIONS
* NIC Interrupts d.c
*
*.DESCRIPTION
* Type must point to the Len/Type field of the message, this is the 2-byte field immediately after the 6 byte
* Destination Address and 6 byte Source Address. The 2 successive bytes addressed by type are interpreted as
* a Big Endian value. If that value is less than or equal to 1500, the message is assumed to be in 802.3
* format. Otherwise the message is assumed to be in Ethernet-II format. Depending on the value of Len/Typ,
* Bridge Tunnel or RFC1042 encapsulation is needed.
*
*.DIAGRAM
*
* 1: presume 802.3, hence preset return value at ENC_NONE
* 2: convert type from "network" Endian format to native Endian
* 4: the litmus test to distinguish type and len.
* The hard code "magic" value of 1500 is intentional and should NOT be replaced by a mnemonic because it is
* not related at all to the maximum frame size supported by the Hermes.
* 6: check type against:
* 0x80F3 //AppleTalk Address Resolution Protocol (AARP)
* 0x8137 //IPX
* to determine the type of encapsulation
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
#if HCF_ENCAP //i.e HCF_ENC or HCF_ENC_SUP
#if ! ( (HCF_ENCAP) & HCF_ENC_SUP )
HCF_STATIC
#endif // HCF_ENCAP
hcf_8
hcf_encap( wci_bufp type )
{
hcf_8 rc = ENC_NONE; /* 1 */
hcf_16 t = (hcf_16)(*type<<8) + *(type+1); /* 2 */
if ( t > 1500 ) { /* 4 */
if ( t == 0x8137 || t == 0x80F3 ) {
rc = ENC_TUNNEL; /* 6 */
} else {
rc = ENC_1042;
}
}
return rc;
} // hcf_encap
#endif // HCF_ENCAP
#endif // HCF_DL_ONLY
/************************************************************************************************************
*
*.MODULE int hcf_get_info( IFBP ifbp, LTVP ltvp )
*.PURPOSE Obtains transient and persistent configuration information from the Card and from the HCF.
*
*.ARGUMENTS
* ifbp address of the Interface Block
* ltvp address of LengthTypeValue structure specifying the "what" and the "how much" of the
* information to be collected from the HCF or from the Hermes
*
*.RETURNS
* HCF_ERR_LEN The provided buffer was too small
* HCF_SUCCESS Success
*!! via cmd_exe ( type >= CFG_RID_FW_MIN )
* HCF_ERR_NO_NIC NIC removed during retrieval
* HCF_ERR_TIME_OUT Expected Hermes event did not occure in expected time
*!! via cmd_exe and setup_bap (type >= CFG_RID_FW_MIN )
* HCF_ERR_DEFUNCT_... HCF is in defunct mode (bits 0x7F reflect cause)
*
*.DESCRIPTION
* The T-field of the LTV-record (provided by the MSF in parameter ltvp) specifies the RID wanted. The RID
* information identified by the T-field is copied into the V-field.
* On entry, the L-field specifies the size of the buffer, also called the "Initial DataLength". The L-value
* includes the size of the T-field, but not the size of the L-field itself.
* On return, the L-field indicates the number of words actually contained by the Type and Value fields.
* As the size of the Type field in the LTV-record is included in the "Initial DataLength" of the record, the
* V-field can contain at most "Initial DataLength" - 1 words of data.
* Copying stops if either the complete Information is copied or if the number of words indicated by the
* "Initial DataLength" were copied. The "Initial DataLength" acts as a safe guard against Configuration
* Information blocks that have different sizes for different F/W versions, e.g. when later versions support
* more tallies than earlier versions.
* If the size of Value field of the RID exceeds the size of the "Initial DataLength" -1, as much data
* as fits is copied, and an error status of HCF_ERR_LEN is returned.
*
* It is the responsibility of the MSF to detect card removal and re-insertion and not call the HCF when the
* NIC is absent. The MSF cannot, however, timely detect a Card removal if the Card is removed while
* hcf_get_info is in progress. Therefore, the HCF performs its own check on Card presence after the read
* operation of the NIC data. If the Card is not present or removed during the execution of hcf_get_info,
* HCF_ERR_NO_NIC is returned and the content of the Data Buffer is unpredictable. This check is not performed
* in case of the "HCF embedded" pseudo RIDs like CFG_TALLIES.
*
* Assert fails if
* - ifbp has a recognizable out-of-range value.
* - reentrancy, may be caused by calling hcf_functions without adequate protection
* against NIC interrupts or multi-threading.
* - ltvp is a NULL pointer.
* - length field of the LTV-record at entry is 0 or 1 or has an excessive value (i.e. exceeds HCF_MAX_LTV).
* - type field of the LTV-record is invalid.
*
*.DIAGRAM
* Hcf_get_mb_info copies the contents of the oldest MailBox Info block in the MailBox to PC RAM. If len is
* less than the size of the MailBox Info block, only as much as fits in the PC RAM buffer is copied. After
* the copying the MailBox Read pointer is updated to point to the next MailBox Info block, hence the
* remainder of an "oversized" MailBox Info block is lost. The truncation of the MailBox Info block is NOT
* reflected in the return status. Note that hcf_get_info guarantees the length of the PC RAM buffer meets
* the minimum requirements of at least 2, so no PC RAM buffer overrun.
*
* Calling hcf_get_mb_info when their is no MailBox Info block available or when there is no MailBox at all,
* results in a "NULL" MailBox Info block.
*
*12: see NOTICE
*17: The return status of cmd_wait and the first hcfio_in_string can be ignored, because when one fails, the
* other fails via the IFB_DefunctStat mechanism
*20: "HCFASSERT( rc == HCF_SUCCESS, rc )" is not suitable because this will always trigger as side effect of
* the HCFASSERT in hcf_put_info which calls hcf_get_info to figure out whether the RID exists at all.
*.NOTICE
*
* "HCF embedded" pseudo RIDs:
* CFG_MB_INFO, CFG_TALLIES, CFG_DRV_IDENTITY, CFG_DRV_SUP_RANGE, CFG_DRV_ACT_RANGES_PRI,
* CFG_DRV_ACT_RANGES_STA, CFG_DRV_ACT_RANGES_HSI
* Note the HCF_ERR_LEN is NOT adequately set, when L >= 2 but less than needed
*
* Remarks: Transfers operation information and transient and persistent configuration information from the
* Card and from the HCF to the MSF.
* The exact layout of the provided data structure depends on the action code. Copying stops if either the
* complete Configuration Information is copied or if the number of bytes indicated by len is copied. Len
* acts as a safe guard against Configuration Information blocks which have different sizes for different
* Hermes versions, e.g. when later versions support more tallies than earlier versions. It is a conscious
* decision that unused parts of the PC RAM buffer are not cleared.
*
* Remarks: The only error against which is protected is the "Read error" as result of Card removal. Only the
* last hcf_io_string need to be protected because if the first fails the second will fail as well. Checking
* for cmd_exe errors is supposed superfluous because problems in cmd_exe are already caught or will be
* caught by hcf_enable.
*
* CFG_MB_INFO: copy the oldest MailBox Info Block or the "null" block if none available.
*
* The mechanism to HCF_ASSERT on invalid typ-codes in the LTV record is based on the following strategy:
* - during the pseudo-asynchronous Hermes commands (diagnose, download) only CFG_MB_INFO is acceptable
* - some codes (e.g. CFG_TALLIES) are explicitly handled by the HCF which implies that these codes
* are valid
* - all other codes in the range 0xFC00 through 0xFFFF are passed to the Hermes. The Hermes returns an
* LTV record with a zero value in the L-field for all Typ-codes it does not recognize. This is
* defined and intended behavior, so HCF_ASSERT does not catch on this phenomena.
* - all remaining codes are invalid and cause an ASSERT.
*
*.CONDITIONS
* In case of USB, HCF_MAX_MSG ;?USED;? to limit the amount of data that can be retrieved via hcf_get_info.
*
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
int
hcf_get_info( IFBP ifbp, LTVP ltvp )
{
int rc = HCF_SUCCESS;
hcf_16 len = ltvp->len;
hcf_16 type = ltvp->typ;
wci_recordp p = &ltvp->len; //destination word pointer (in LTV record)
hcf_16 *q = NULL; /* source word pointer Note!! DOS COM can't cope with FAR
* as a consequence MailBox must be near which is usually true anyway
*/
int i;
HCFLOGENTRY( HCF_TRACE_GET_INFO, ltvp->typ )
HCFASSERT( ifbp->IFB_Magic == HCF_MAGIC, ifbp->IFB_Magic )
HCFASSERT_INT
HCFASSERT( ltvp, 0 )
HCFASSERT( 1 < ltvp->len && ltvp->len <= HCF_MAX_LTV + 1, MERGE_2( ltvp->typ, ltvp->len ) )
ltvp->len = 0; //default to: No Info Available
#if defined MSF_COMPONENT_ID || (HCF_EXT) & HCF_EXT_MB //filter out all specials
for ( i = 0; ( q = xxxx[i] ) != NULL && q[1] != type; i++ ) /*NOP*/;
#endif // MSF_COMPONENT_ID / HCF_EXT_MB
#if HCF_TALLIES
if ( type == CFG_TALLIES ) { /*3*/
(void)hcf_action( ifbp, HCF_ACT_TALLIES );
q = (hcf_16*)&ifbp->IFB_TallyLen;
}
#endif // HCF_TALLIES
#if (HCF_EXT) & HCF_EXT_MB
if ( type == CFG_MB_INFO ) {
if ( ifbp->IFB_MBInfoLen ) {
if ( ifbp->IFB_MBp[ifbp->IFB_MBRp] == 0xFFFF ) {
ifbp->IFB_MBRp = 0; //;?Probably superfluous
}
q = &ifbp->IFB_MBp[ifbp->IFB_MBRp];
ifbp->IFB_MBRp += *q + 1; //update read pointer
if ( ifbp->IFB_MBp[ifbp->IFB_MBRp] == 0xFFFF ) {
ifbp->IFB_MBRp = 0;
}
ifbp->IFB_MBInfoLen = ifbp->IFB_MBp[ifbp->IFB_MBRp];
}
}
#endif // HCF_EXT_MB
if ( q != NULL ) { //a special or CFG_TALLIES or CFG_MB_INFO
i = min( len, *q ) + 1; //total size of destination (including T-field)
while ( i-- ) {
*p++ = *q;
#if (HCF_TALLIES) & HCF_TALLIES_RESET
if ( q > &ifbp->IFB_TallyTyp && type == CFG_TALLIES ) {
*q = 0;
}
#endif // HCF_TALLIES_RESET
q++;
}
} else { // not a special nor CFG_TALLIES nor CFG_MB_INFO
if ( type == CFG_CNTL_OPT ) { //read back effective options
ltvp->len = 2;
ltvp->val[0] = ifbp->IFB_CntlOpt;
#if (HCF_EXT) & HCF_EXT_NIC_ACCESS
} else if ( type == CFG_PROD_DATA ) { //only needed for some test tool on top of H-II NDIS driver
hcf_io io_port;
wci_bufp pt; //pointer with the "right" type, just to help ease writing macros with embedded assembly
OPW( HREG_AUX_PAGE, (hcf_16)(PLUG_DATA_OFFSET >> 7) );
OPW( HREG_AUX_OFFSET, (hcf_16)(PLUG_DATA_OFFSET & 0x7E) );
io_port = ifbp->IFB_IOBase + HREG_AUX_DATA; //to prevent side effects of the MSF-defined macro
p = ltvp->val; //destination char pointer (in LTV record)
i = len - 1;
if (i > 0 ) {
pt = (wci_bufp)p; //just to help ease writing macros with embedded assembly
IN_PORT_STRING_8_16( io_port, pt, i ); //space used by T: -1
}
} else if ( type == CFG_CMD_HCF ) {
#define P ((CFG_CMD_HCF_STRCT FAR *)ltvp)
HCFASSERT( P->cmd == CFG_CMD_HCF_REG_ACCESS, P->cmd ) //only Hermes register access supported
if ( P->cmd == CFG_CMD_HCF_REG_ACCESS ) {
HCFASSERT( P->mode < ifbp->IFB_IOBase, P->mode ) //Check Register space
ltvp->len = min( len, 4 ); //RESTORE ltv length
P->add_info = IPW( P->mode );
}
#undef P
#endif // HCF_EXT_NIC_ACCESS
#if (HCF_ASSERT) & HCF_ASSERT_PRINTF
} else if (type == CFG_FW_PRINTF) {
rc = fw_printf(ifbp, (CFG_FW_PRINTF_STRCT*)ltvp);
#endif // HCF_ASSERT_PRINTF
} else if ( type >= CFG_RID_FW_MIN ) {
//;? by using HCMD_BUSY option when calling cmd_exe, using a get_frag with length 0 just to set up the
//;? BAP and calling cmd_cmpl, you could merge the 2 Busy waits. Whether this really helps (and what
//;? would be the optimal sequence in cmd_exe and get_frag) would have to be MEASURED
/*17*/ if ( ( rc = cmd_exe( ifbp, HCMD_ACCESS, type ) ) == HCF_SUCCESS &&
( rc = setup_bap( ifbp, type, 0, IO_IN ) ) == HCF_SUCCESS ) {
get_frag( ifbp, (wci_bufp)&ltvp->len, 2*len+2 BE_PAR(2) );
if ( IPW( HREG_STAT ) == 0xFFFF ) { //NIC removal test
ltvp->len = 0;
HCFASSERT( DO_ASSERT, type )
}
}
/*12*/ } else HCFASSERT( DO_ASSERT, type ) /*NOP*/; //NOP in case HCFASSERT is dummy
}
if ( len < ltvp->len ) {
ltvp->len = len;
if ( rc == HCF_SUCCESS ) {
rc = HCF_ERR_LEN;
}
}
HCFASSERT( rc == HCF_SUCCESS || ( rc == HCF_ERR_LEN && ifbp->IFB_AssertTrace & 1<<HCF_TRACE_PUT_INFO ),
MERGE_2( type, rc ) ) /*20*/
HCFLOGEXIT( HCF_TRACE_GET_INFO )
return rc;
} // hcf_get_info
/************************************************************************************************************
*
*.MODULE int hcf_put_info( IFBP ifbp, LTVP ltvp )
*.PURPOSE Transfers operation and configuration information to the Card and to the HCF.
*
*.ARGUMENTS
* ifbp address of the Interface Block
* ltvp specifies the RID (as defined by Hermes I/F) or pseudo-RID (as defined by WCI)
*
*.RETURNS
* HCF_SUCCESS
*!! via cmd_exe
* HCF_ERR_NO_NIC NIC removed during data retrieval
* HCF_ERR_TIME_OUT Expected F/W event did not occur in time
* HCF_ERR_DEFUNCT_...
*!! via download CFG_DLNV_START <= type <= CFG_DL_STOP
*!! via put_info CFG_RID_CFG_MIN <= type <= CFG_RID_CFG_MAX
*!! via put_frag
*
*.DESCRIPTION
* The L-field of the LTV-record (provided by the MSF in parameter ltvp) specifies the size of the buffer.
* The L-value includes the size of the T-field, but not the size of the L-field.
* The T- field specifies the RID placed in the V-field by the MSF.
*
* Not all CFG-codes can be used for hcf_put_info. The following CFG-codes are valid for hcf_put_info:
* o One of the CFG-codes in the group "Network Parameters, Static Configuration Entities"
* Changes made by hcf_put_info to CFG_codes in this group will not affect the F/W
* and HCF behavior until hcf_cntl_port( HCF_PORT_ENABLE) is called.
* o One of the CFG-codes in the group "Network Parameters, Dynamic Configuration Entities"
* Changes made by hcf_put_info to CFG_codes will affect the F/W and HCF behavior immediately.
* o CFG_PROG.
* This code is used to initiate and terminate the process to download data either to
* volatile or to non-volatile RAM on the NIC as well as for the actual download.
* o CFG-codes related to the HCF behavior.
* The related CFG-codes are:
* - CFG_REG_MB
* - CFG_REG_ASSERT_RTNP
* - CFG_REG_INFO_LOG
* - CFG_CMD_NIC
* - CFG_CMD_DONGLE
* - CFG_CMD_HCF
* - CFG_NOTIFY
*
* All LTV-records "unknown" to the HCF are forwarded to the F/W.
*
* Assert fails if
* - ifbp has a recognizable out-of-range value.
* - ltvp is a NULL pointer.
* - hcf_put_info was called without prior call to hcf_connect
* - type field of the LTV-record is invalid, i.e. neither HCF nor F/W can handle the value.
* - length field of the LTV-record at entry is less than 1 or exceeds MAX_LTV_SIZE.
* - registering a MailBox with size less than 60 or a non-aligned buffer address is used.
* - reentrancy, may be caused by calling hcf_functions without adequate protection against
* NIC interrupts or multi-threading.
*
*.DIAGRAM
*
*.NOTICE
* Remarks: In case of Hermes Configuration LTVs, the codes for the type are "cleverly" chosen to be
* identical to the RID. Hermes Configuration information is copied from the provided data structure into the
* Card.
* In case of HCF Configuration LTVs, the type values are chosen in a range which does not overlap the
* RID-range.
*
*20:
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
int
hcf_put_info( IFBP ifbp, LTVP ltvp )
{
int rc = HCF_SUCCESS;
HCFLOGENTRY( HCF_TRACE_PUT_INFO, ltvp->typ )
HCFASSERT( ifbp->IFB_Magic == HCF_MAGIC, ifbp->IFB_Magic )
HCFASSERT_INT
HCFASSERT( ltvp, 0 )
HCFASSERT( 1 < ltvp->len && ltvp->len <= HCF_MAX_LTV + 1, ltvp->len )
//all codes between 0xFA00 and 0xFCFF are passed to Hermes
#if (HCF_TYPE) & HCF_TYPE_WPA
{ hcf_16 i;
hcf_32 FAR * key_p;
if ( ltvp->typ == CFG_ADD_TKIP_DEFAULT_KEY || ltvp->typ == CFG_ADD_TKIP_MAPPED_KEY ) {
key_p = (hcf_32*)((CFG_ADD_TKIP_MAPPED_KEY_STRCT FAR *)ltvp)->tx_mic_key;
i = TX_KEY; //i.e. TxKeyIndicator == 1, KeyID == 0
if ( ltvp->typ == CFG_ADD_TKIP_DEFAULT_KEY ) {
key_p = (hcf_32*)((CFG_ADD_TKIP_DEFAULT_KEY_STRCT FAR *)ltvp)->tx_mic_key;
i = CNV_LITTLE_TO_SHORT(((CFG_ADD_TKIP_DEFAULT_KEY_STRCT FAR *)ltvp)->tkip_key_id_info);
}
if ( i & TX_KEY ) { /* TxKeyIndicator == 1
(either really set by MSF in case of DEFAULT or faked by HCF in case of MAPPED ) */
ifbp->IFB_MICTxCntl = (hcf_16)( HFS_TX_CNTL_MIC | (i & KEY_ID )<<8 );
ifbp->IFB_MICTxKey[0] = CNV_LONGP_TO_LITTLE( key_p );
ifbp->IFB_MICTxKey[1] = CNV_LONGP_TO_LITTLE( (key_p+1) );
}
i = ( i & KEY_ID ) * 2;
ifbp->IFB_MICRxKey[i] = CNV_LONGP_TO_LITTLE( (key_p+2) );
ifbp->IFB_MICRxKey[i+1] = CNV_LONGP_TO_LITTLE( (key_p+3) );
}
#define P ((CFG_REMOVE_TKIP_DEFAULT_KEY_STRCT FAR *)ltvp)
if ( ( ltvp->typ == CFG_REMOVE_TKIP_MAPPED_KEY ) ||
( ltvp->typ == CFG_REMOVE_TKIP_DEFAULT_KEY &&
( (ifbp->IFB_MICTxCntl >> 8) & KEY_ID ) == CNV_SHORT_TO_LITTLE(P->tkip_key_id )
)
) { ifbp->IFB_MICTxCntl = 0; } //disable MIC-engine
#undef P
}
#endif // HCF_TYPE_WPA
if ( ltvp->typ == CFG_PROG ) {
rc = download( ifbp, (CFG_PROG_STRCT FAR *)ltvp );
} else switch (ltvp->typ) {
#if (HCF_ASSERT) & HCF_ASSERT_RT_MSF_RTN
case CFG_REG_ASSERT_RTNP: //Register MSF Routines
#define P ((CFG_REG_ASSERT_RTNP_STRCT FAR *)ltvp)
ifbp->IFB_AssertRtn = P->rtnp;
// ifbp->IFB_AssertLvl = P->lvl; //TODO not yet supported so default is set in hcf_connect
HCFASSERT( DO_ASSERT, MERGE_2( HCF_ASSERT, 0xCAF1 ) ) //just to proof that the complete assert machinery is working
#undef P
break;
#endif // HCF_ASSERT_RT_MSF_RTN
#if (HCF_EXT) & HCF_EXT_INFO_LOG
case CFG_REG_INFO_LOG: //Register Log filter
ifbp->IFB_RIDLogp = ((CFG_RID_LOG_STRCT FAR*)ltvp)->recordp;
break;
#endif // HCF_EXT_INFO_LOG
case CFG_CNTL_OPT: //overrule option
HCFASSERT( ( ltvp->val[0] & ~(USE_DMA | USE_16BIT) ) == 0, ltvp->val[0] )
if ( ( ltvp->val[0] & USE_DMA ) == 0 ) ifbp->IFB_CntlOpt &= ~USE_DMA;
ifbp->IFB_CntlOpt |= ltvp->val[0] & USE_16BIT;
break;
#if (HCF_EXT) & HCF_EXT_MB
case CFG_REG_MB: //Register MailBox
#define P ((CFG_REG_MB_STRCT FAR *)ltvp)
HCFASSERT( ( (hcf_32)P->mb_addr & 0x0001 ) == 0, (hcf_32)P->mb_addr )
HCFASSERT( (P)->mb_size >= 60, (P)->mb_size )
ifbp->IFB_MBp = P->mb_addr;
/* if no MB present, size must be 0 for ;?the old;? put_info_mb to work correctly */
ifbp->IFB_MBSize = ifbp->IFB_MBp == NULL ? 0 : P->mb_size;
ifbp->IFB_MBWp = ifbp->IFB_MBRp = 0;
ifbp->IFB_MBp[0] = 0; //flag the MailBox as empty
ifbp->IFB_MBInfoLen = 0;
HCFASSERT( ifbp->IFB_MBSize >= 60 || ifbp->IFB_MBp == NULL, ifbp->IFB_MBSize )
#undef P
break;
case CFG_MB_INFO: //store MailBoxInfoBlock
rc = put_info_mb( ifbp, (CFG_MB_INFO_STRCT FAR *)ltvp );
break;
#endif // HCF_EXT_MB
#if (HCF_EXT) & HCF_EXT_NIC_ACCESS
case CFG_CMD_NIC:
#define P ((CFG_CMD_NIC_STRCT FAR *)ltvp)
OPW( HREG_PARAM_2, P->parm2 );
OPW( HREG_PARAM_1, P->parm1 );
rc = cmd_exe( ifbp, P->cmd, P->parm0 );
P->hcf_stat = (hcf_16)rc;
P->stat = IPW( HREG_STAT );
P->resp0 = IPW( HREG_RESP_0 );
P->resp1 = IPW( HREG_RESP_1 );
P->resp2 = IPW( HREG_RESP_2 );
P->ifb_err_cmd = ifbp->IFB_ErrCmd;
P->ifb_err_qualifier = ifbp->IFB_ErrQualifier;
#undef P
break;
case CFG_CMD_HCF:
#define P ((CFG_CMD_HCF_STRCT FAR *)ltvp)
HCFASSERT( P->cmd == CFG_CMD_HCF_REG_ACCESS, P->cmd ) //only Hermes register access supported
if ( P->cmd == CFG_CMD_HCF_REG_ACCESS ) {
HCFASSERT( P->mode < ifbp->IFB_IOBase, P->mode ) //Check Register space
OPW( P->mode, P->add_info);
}
#undef P
break;
#endif // HCF_EXT_NIC_ACCESS
#if (HCF_ASSERT) & HCF_ASSERT_PRINTF
case CFG_FW_PRINTF_BUFFER_LOCATION:
ifbp->IFB_FwPfBuff = *(CFG_FW_PRINTF_BUFFER_LOCATION_STRCT*)ltvp;
break;
#endif // HCF_ASSERT_PRINTF
default: //pass everything unknown above the "FID" range to the Hermes or Dongle
rc = put_info( ifbp, ltvp );
}
//DO NOT !!! HCFASSERT( rc == HCF_SUCCESS, rc ) /* 20 */
HCFLOGEXIT( HCF_TRACE_PUT_INFO )
return rc;
} // hcf_put_info
#if (HCF_DL_ONLY) == 0
/************************************************************************************************************
*
*.MODULE int hcf_rcv_msg( IFBP ifbp, DESC_STRCT *descp, unsigned int offset )
*.PURPOSE All: decapsulate a message.
* pre-HermesII.5: verify MIC.
* non-USB, non-DMA mode: Transfer a message from the NIC to the Host and acknowledge reception.
* USB: Transform a message from proprietary USB format to 802.3 format
*
*.ARGUMENTS
* ifbp address of the Interface Block
* descp Pointer to the Descriptor List location.
* offset USB: not used
* non-USB: specifies the beginning of the data to be obtained (0 corresponds with DestAddr field
* of frame).
*
*.RETURNS
* HCF_SUCCESS No SSN error ( or HCF_ERR_MIC already reported by hcf_service_nic)
* HCF_ERR_MIC message contains an erroneous MIC ( HCF_SUCCESS is reported if HCF_ERR_MIC is already
* reported by hcf_service_nic)
* HCF_ERR_NO_NIC NIC removed during data retrieval
* HCF_ERR_DEFUNCT...
*
*.DESCRIPTION
* The Receive Message Function can be executed by the MSF to obtain the Data Info fields of the message that
* is reported to be available by the Service NIC Function.
*
* The Receive Message Function copies the message data available in the Card memory into a buffer structure
* provided by the MSF.
* Only data of the message indicated by the Service NIC Function can be obtained.
* Execution of the Service NIC function may result in the availability of a new message, but it definitely
* makes the message reported by the preceding Service NIC function, unavailable.
*
* in non-USB/non-DMA mode, hcf_rcv_msg starts the copy process at the (non-negative) offset requested by the
* parameter offset, relative to HFS_ADDR_DEST, e.g offset 0 starts copying from the Destination Address, the
* very begin of the 802.3 frame message. Offset must either lay within the part of the 802.3 frame as stored
* by hcf_service_nic in the lookahead buffer or be just behind it, i.e. the first byte not yet read.
* When offset is within lookahead, data is copied from lookahead.
* When offset is beyond lookahead, data is read directly from RxFS in NIC with disregard of the actual value
* of offset
*
*.NOTICE:
* o at entry: look ahead buffer as passed with hcf_service_nic is still accessible and unchanged
* o at exit: Receive Frame in NIC memory is released
*
* Description:
* Starting at the byte indicated by the Offset value, the bytes are copied from the Data Info
* Part of the current Receive Frame Structure to the Host memory data buffer structure
* identified by descp.
* The maximum value for Offset is the number of characters of the 802.3 frame read into the
* look ahead buffer by hcf_service_nic (i.e. the look ahead buffer size minus
* Control and 802.11 fields)
* If Offset is less than the maximum value, copying starts from the look ahead buffer till the
* end of that buffer is reached
* Then (or if the maximum value is specified for Offset), the
* message is directly copied from NIC memory to Host memory.
* If an invalid (i.e. too large) offset is specified, an assert catches but the buffer contents are
* undefined.
* Copying stops if either:
* o the end of the 802.3 frame is reached
* o the Descriptor with a NULL pointer in the next_desc_addr field is reached
*
* When the copying stops, the receiver is ack'ed, thus freeing the NIC memory where the frame is stored
* As a consequence, hcf_rcv_msg can only be called once for any particular Rx frame.
*
* For the time being (PCI Bus mastering not yet supported), only the following fields of each
* of the descriptors in the descriptor list must be set by the MSF:
* o buf_cntl.buf_dim[1]
* o *next_desc_addr
* o *buf_addr
* At return from hcf_rcv_msg, the field buf_cntl.buf_dim[0] of the used Descriptors reflects
* the number of bytes in the buffer corresponding with the Descriptor.
* On the last used Descriptor, buf_cntl.buf_dim[0] is less or equal to buf_cntl.buf_dim[1].
* On all preceding Descriptors buf_cntl.buf_dim[0] is equal to buf_cntl.buf_dim[1].
* On all succeeding (unused) Descriptors, buf_cntl.buf_dim[0] is zero.
* Note: this I/F is based on the assumptions how the I/F needed for PCI Bus mastering will
* be, so it may change.
*
* The most likely handling of HCF_ERR_NO_NIC by the MSF is to drop the already copied
* data as elegantly as possible under the constraints and requirements posed by the (N)OS.
* If no received Frame Structure is pending, "Success" rather than "Read error" is returned.
* This error constitutes a logic flaw in the MSF
* The HCF can only catch a minority of this
* type of errors
* Based on consistency ideas, the HCF catches none of these errors.
*
* Assert fails if
* - ifbp has a recognizable out-of-range value
* - there is no unacknowledged Rx-message available
* - offset is out of range (outside look ahead buffer)
* - descp is a NULL pointer
* - any of the descriptors is not double word aligned
* - reentrancy, may be caused by calling hcf_functions without adequate protection
* against NIC interrupts or multi-threading.
* - Interrupts are enabled.
*
*.DIAGRAM
*
*.NOTICE
* - by using unsigned int as type for offset, no need to worry about negative offsets
* - Asserting on being enabled/present is superfluous, since a non-zero IFB_lal implies that hcf_service_nic
* was called and detected a Rx-message. A zero IFB_lal will set the BUF_CNT field of at least the first
* descriptor to zero.
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
int
hcf_rcv_msg( IFBP ifbp, DESC_STRCT *descp, unsigned int offset )
{
int rc = HCF_SUCCESS;
wci_bufp cp; //char oriented working pointer
hcf_16 i;
int tot_len = ifbp->IFB_RxLen - offset; //total length
wci_bufp lap = ifbp->IFB_lap + offset; //start address in LookAhead Buffer
hcf_16 lal = ifbp->IFB_lal - offset; //available data within LookAhead Buffer
hcf_16 j;
HCFLOGENTRY( HCF_TRACE_RCV_MSG, offset )
HCFASSERT( ifbp->IFB_Magic == HCF_MAGIC, ifbp->IFB_Magic )
HCFASSERT_INT
HCFASSERT( descp, HCF_TRACE_RCV_MSG )
HCFASSERT( ifbp->IFB_RxLen, HCF_TRACE_RCV_MSG )
HCFASSERT( ifbp->IFB_RxLen >= offset, MERGE_2( offset, ifbp->IFB_RxLen ) )
HCFASSERT( ifbp->IFB_lal >= offset, offset )
HCFASSERT( (ifbp->IFB_CntlOpt & USE_DMA) == 0, 0xDADA )
if ( tot_len < 0 ) {
lal = 0; tot_len = 0; //suppress all copying activity in the do--while loop
}
do { //loop over all available fragments
// obnoxious hcf.c(1480) : warning C4769: conversion of near pointer to long integer
HCFASSERT( ((hcf_32)descp & 3 ) == 0, (hcf_32)descp )
cp = descp->buf_addr;
j = min( (hcf_16)tot_len, descp->BUF_SIZE ); //minimum of "what's` available" and fragment size
descp->BUF_CNT = j;
tot_len -= j; //adjust length still to go
if ( lal ) { //if lookahead Buffer not yet completely copied
i = min( lal, j ); //minimum of "what's available" in LookAhead and fragment size
lal -= i; //adjust length still available in LookAhead
j -= i; //adjust length still available in current fragment
/*;? while loop could be improved by moving words but that is complicated on platforms with
* alignment requirements*/
while ( i-- ) *cp++ = *lap++;
}
if ( j ) { //if LookAhead Buffer exhausted but still space in fragment, copy directly from NIC RAM
get_frag( ifbp, cp, j BE_PAR(0) );
CALC_RX_MIC( cp, j );
}
} while ( ( descp = descp->next_desc_addr ) != NULL );
#if (HCF_TYPE) & HCF_TYPE_WPA
if ( ifbp->IFB_RxFID ) {
rc = check_mic( ifbp ); //prevents MIC error report if hcf_service_nic already consumed all
}
#endif // HCF_TYPE_WPA
(void)hcf_action( ifbp, HCF_ACT_RX_ACK ); //only 1 shot to get the data, so free the resources in the NIC
HCFASSERT( rc == HCF_SUCCESS, rc )
HCFLOGEXIT( HCF_TRACE_RCV_MSG )
return rc;
} // hcf_rcv_msg
#endif // HCF_DL_ONLY
#if (HCF_DL_ONLY) == 0
/************************************************************************************************************
*
*.MODULE int hcf_send_msg( IFBP ifbp, DESC_STRCT *descp, hcf_16 tx_cntl )
*.PURPOSE Encapsulate a message and append padding and MIC.
* non-USB: Transfers the resulting message from Host to NIC and initiates transmission.
* USB: Transfer resulting message into a flat buffer.
*
*.ARGUMENTS
* ifbp address of the Interface Block
* descp pointer to the DescriptorList or NULL
* tx_cntl indicates MAC-port and (Hermes) options
* HFS_TX_CNTL_SPECTRALINK
* HFS_TX_CNTL_PRIO
* HFS_TX_CNTL_TX_OK
* HFS_TX_CNTL_TX_EX
* HFS_TX_CNTL_TX_DELAY
* HFS_TX_CNTL_TX_CONT
* HCF_PORT_0 MAC Port 0 (default)
* HCF_PORT_1 (AP only) MAC Port 1
* HCF_PORT_2 (AP only) MAC Port 2
* HCF_PORT_3 (AP only) MAC Port 3
* HCF_PORT_4 (AP only) MAC Port 4
* HCF_PORT_5 (AP only) MAC Port 5
* HCF_PORT_6 (AP only) MAC Port 6
*
*.RETURNS
* HCF_SUCCESS
* HCF_ERR_DEFUNCT_..
* HCF_ERR_TIME_OUT
*
*.DESCRIPTION:
* The Send Message Function embodies 2 functions:
* o transfers a message (including MAC header) from the provided buffer structure in Host memory to the Transmit
* Frame Structure (TxFS) in NIC memory.
* o Issue a send command to the F/W to actually transmit the contents of the TxFS.
*
* Control is based on the Resource Indicator IFB_RscInd.
* The Resource Indicator is maintained by the HCF and should only be interpreted but not changed by the MSF.
* The MSF must check IFB_RscInd to be non-zero before executing the call to the Send Message Function.
* When no resources are available, the MSF must handle the queuing of the Transmit frame and check the
* Resource Indicator periodically after calling hcf_service_nic.
*
* The Send Message Functions transfers a message to NIC memory when it is called with a non-NULL descp.
* Before the Send Message Function is invoked this way, the Resource Indicator (IFB_RscInd) must be checked.
* If the Resource is not available, Send Message Function execution must be postponed until after processing of
* a next hcf_service_nic it appears that the Resource has become available.
* The message is copied from the buffer structure identified by descp to the NIC.
* Copying stops if a NULL pointer in the next_desc_addr field is reached.
* Hcf_send_msg does not check for transmit buffer overflow, because the F/W does this protection.
* In case of a transmit buffer overflow, the surplus which does not fit in the buffer is simply dropped.
*
* The Send Message Function activates the F/W to actually send the message to the medium when the
* HFS_TX_CNTL_TX_DELAY bit of the tx_cntl parameter is not set.
* If the descp parameter of the current call is non-NULL, the message as represented by descp is send.
* If the descp parameter of the current call is NULL, and if the preceding call of the Send Message Function had
* a non-NULL descp and the preceding call had the HFS_TX_CNTL_TX_DELAY bit of tx_cntl set, then the message as
* represented by the descp of the preceding call is send.
*
* Hcf_send_msg supports encapsulation (see HCF_ENCAP) of Ethernet-II frames.
* An Ethernet-II frame is transferred to the Transmit Frame structure as an 802.3 frame.
* Hcf_send_msg distinguishes between an 802.3 and an Ethernet-II frame by looking at the data length/type field
* of the frame. If this field contains a value larger than 1514, the frame is considered to be an Ethernet-II
* frame, otherwise it is treated as an 802.3 frame.
* To ease implementation of the HCF, this type/type field must be located in the first descriptor structure,
* i.e. the 1st fragment must have a size of at least 14 (to contain DestAddr, SrcAddr and Len/Type field).
* An Ethernet-II frame is encapsulated by inserting a SNAP header between the addressing information and the
* type field. This insertion is transparent for the MSF.
* The HCF contains a fixed table that stores a number of types. If the value specified by the type/type field
* occurs in this table, Bridge Tunnel Encapsulation is used, otherwise RFC1042 encapsulation is used.
* Bridge Tunnel uses AA AA 03 00 00 F8 as SNAP header,
* RFC1042 uses AA AA 03 00 00 00 as SNAP header.
* The table currently contains:
* 0 0x80F3 AppleTalk Address Resolution Protocol (AARP)
* 0 0x8137 IPX
*
* The algorithm to distinguish between 802.3 and Ethernet-II frames limits the maximum length for frames of
* 802.3 frames to 1514 bytes.
* Encapsulation can be suppressed by means of the system constant HCF_ENCAP, e.g. to support proprietary
* protocols with 802.3 like frames with a size larger than 1514 bytes.
*
* In case the HCF encapsulates the frame, the number of bytes that is actually transmitted is determined by the
* cumulative value of the buf_cntl.buf_dim[0] fields.
* In case the HCF does not encapsulate the frame, the number of bytes that is actually transmitted is not
* determined by the cumulative value of the buf_cntl.buf_dim[DESC_CNTL_CNT] fields of the desc_strct's but by
* the Length field of the 802.3 frame.
* If there is a conflict between the cumulative value of the buf_cntl.buf_dim[0] fields and the
* 802.3 Length field the 802.3 Length field determines the number of bytes actually transmitted by the NIC while
* the cumulative value of the buf_cntl.buf_dim[0] fields determines the position of the MIC, hence a mismatch
* will result in MIC errors on the Receiving side.
* Currently this problem is flagged on the Transmit side by an Assert.
* The following fields of each of the descriptors in the descriptor list must be set by the MSF:
* o buf_cntl.buf_dim[0]
* o *next_desc_addr
* o *buf_addr
*
* All bits of the tx_cntl parameter except HFS_TX_CNTL_TX_DELAY and the HCF_PORT# bits are passed to the F/W via
* the HFS_TX_CNTL field of the TxFS.
*
* Note that hcf_send_msg does not detect NIC absence. The MSF is supposed to have its own -platform dependent-
* way to recognize card removal/insertion.
* The total system must be robust against card removal and there is no principal difference between card removal
* just after hcf_send_msg returns but before the actual transmission took place or sometime earlier.
*
* Assert fails if
* - ifbp has a recognizable out-of-range value
* - descp is a NULL pointer
* - no resources for PIF available.
* - Interrupts are enabled.
* - reentrancy, may be caused by calling hcf_functions without adequate protection
* against NIC interrupts or multi-threading.
*
*.DIAGRAM
*4: for the normal case (i.e. no HFS_TX_CNTL_TX_DELAY option active), a fid is acquired via the
* routine get_fid. If no FID is acquired, the remainder is skipped without an error notification. After
* all, the MSF is not supposed to call hcf_send_msg when no Resource is available.
*7: The ControlField of the TxFS is written. Since put_frag can only return the fatal Defunct or "No NIC", the
* return status can be ignored because when it fails, cmd_wait will fail as well. (see also the note on the
* need for a return code below).
* Note that HFS_TX_CNTL has different values for H-I, H-I/SSN and H-II and HFS_ADDR_DEST has different
* values for H-I (regardless of SSN) and H-II.
* By writing 17, 1 or 2 ( implying 16, 0 or 1 garbage word after HFS_TX_CNTL) the BAP just gets to
* HFS_ADDR_DEST for H-I, H-I/SSN and H-II respectively.
*10: if neither encapsulation nor MIC calculation is needed, splitting the first fragment in two does not
* really help but it makes the flow easier to follow to do not optimize on this difference
*
* hcf_send_msg checks whether the frame is an Ethernet-II rather than an "official" 802.3 frame.
* The E-II check is based on the length/type field in the MAC header. If this field has a value larger than
* 1500, E-II is assumed. The implementation of this test fails if the length/type field is not in the first
* descriptor. If E-II is recognized, a SNAP header is inserted. This SNAP header represents either RFC1042
* or Bridge-Tunnel encapsulation, depending on the return status of the support routine hcf_encap.
*
*.NOTICE
* hcf_send_msg leaves the responsibility to only send messages on enabled ports at the MSF level.
* This is considered the strategy which is sufficiently adequate for all "robust" MSFs, have the least
* processor utilization and being still acceptable robust at the WCI !!!!!
*
* hcf_send_msg does not NEED a return value to report NIC absence or removal during the execution of
* hcf_send_msg(), because the MSF and higher layers must be able to cope anyway with the NIC being removed
* after a successful completion of hcf_send_msg() but before the actual transmission took place.
* To accommodate user expectations the current implementation does report NIC absence.
* Defunct blocks all NIC access and will (also) be reported on a number of other calls.
*
* hcf_send_msg does not check for transmit buffer overflow because the Hermes does this protection.
* In case of a transmit buffer overflow, the surplus which does not fit in the buffer is simply dropped.
* Note that this possibly results in the transmission of incomplete frames.
*
* After some deliberation with F/W team, it is decided that - being in the twilight zone of not knowing
* whether the problem at hand is an MSF bug, HCF buf, F/W bug, H/W malfunction or even something else - there
* is no "best thing to do" in case of a failing send, hence the HCF considers the TxFID ownership to be taken
* over by the F/W and hopes for an Allocate event in due time
*
*.ENDDOC END DOCUMENTATION
*
************************************************************************************************************/
int
hcf_send_msg( IFBP ifbp, DESC_STRCT *descp, hcf_16 tx_cntl )
{
int rc = HCF_SUCCESS;
DESC_STRCT *p /* = descp*/; //working pointer
hcf_16 len; // total byte count
hcf_16 i;
hcf_16 fid = 0;
HCFASSERT( ifbp->IFB_RscInd || descp == NULL, ifbp->IFB_RscInd )
HCFASSERT( (ifbp->IFB_CntlOpt & USE_DMA) == 0, 0xDADB )
HCFLOGENTRY( HCF_TRACE_SEND_MSG, tx_cntl )
HCFASSERT( ifbp->IFB_Magic == HCF_MAGIC, ifbp->IFB_Magic )
HCFASSERT_INT
/* obnoxious c:/hcf/hcf.c(1480) : warning C4769: conversion of near pointer to long integer,
* so skip */
HCFASSERT( ((hcf_32)descp & 3 ) == 0, (hcf_32)descp )
#if HCF_ASSERT
{ int x = ifbp->IFB_FWIdentity.comp_id == COMP_ID_FW_AP ? tx_cntl & ~HFS_TX_CNTL_PORT : tx_cntl;
HCFASSERT( (x & ~HCF_TX_CNTL_MASK ) == 0, tx_cntl )
}
#endif // HCF_ASSERT
if ( descp ) ifbp->IFB_TxFID = 0; //cancel a pre-put message
#if (HCF_EXT) & HCF_EXT_TX_CONT // Continuous transmit test
if ( tx_cntl == HFS_TX_CNTL_TX_CONT ) {
fid = get_fid(ifbp);
if (fid != 0 ) {
//setup BAP to begin of TxFS
(void)setup_bap( ifbp, fid, 0, IO_OUT );
//copy all the fragments in a transparent fashion
for ( p = descp; p; p = p->next_desc_addr ) {
/* obnoxious warning C4769: conversion of near pointer to long integer */
HCFASSERT( ((hcf_32)p & 3 ) == 0, (hcf_32)p )
put_frag( ifbp, p->buf_addr, p->BUF_CNT BE_PAR(0) );
}
rc = cmd_exe( ifbp, HCMD_THESEUS | HCMD_BUSY | HCMD_STARTPREAMBLE, fid );
if ( ifbp->IFB_RscInd == 0 ) {
ifbp->IFB_RscInd = get_fid( ifbp );
}
}
// een slecht voorbeeld doet goed volgen ;?
HCFLOGEXIT( HCF_TRACE_SEND_MSG )
return rc;
}
#endif // HCF_EXT_TX_CONT
/* the following initialization code is redundant for a pre-put message
* but moving it inside the "if fid" logic makes the merging with the
* USB flow awkward
*/
#if (HCF_TYPE) & HCF_TYPE_WPA
tx_cntl |= ifbp->IFB_MICTxCntl;
#endif // HCF_TYPE_WPA
fid = ifbp->IFB_TxFID;
if (fid == 0 && ( fid = get_fid( ifbp ) ) != 0 ) /* 4 */
/* skip the next compound statement if:
- pre-put message or
- no fid available (which should never occur if the MSF adheres to the WCI)
*/
{ // to match the closing curly bracket of above "if" in case of HCF_TYPE_USB
//calculate total length ;? superfluous unless CCX or Encapsulation
len = 0;
p = descp;
do len += p->BUF_CNT; while ( ( p = p->next_desc_addr ) != NULL );
p = descp;
//;? HCFASSERT( len <= HCF_MAX_MSG, len )
/*7*/ (void)setup_bap( ifbp, fid, HFS_TX_CNTL, IO_OUT );
#if (HCF_TYPE) & HCF_TYPE_TX_DELAY
HCFASSERT( ( descp != NULL ) ^ ( tx_cntl & HFS_TX_CNTL_TX_DELAY ), tx_cntl )
if ( tx_cntl & HFS_TX_CNTL_TX_DELAY ) {
tx_cntl &= ~HFS_TX_CNTL_TX_DELAY; //!!HFS_TX_CNTL_TX_DELAY no longer available
ifbp->IFB_TxFID = fid;
fid = 0; //!!fid no longer available, be careful when modifying code
}
#endif // HCF_TYPE_TX_DELAY
OPW( HREG_DATA_1, tx_cntl ) ;
OPW( HREG_DATA_1, 0 );
#if ! ( (HCF_TYPE) & HCF_TYPE_CCX )
HCFASSERT( p->BUF_CNT >= 14, p->BUF_CNT )
/* assume DestAddr/SrcAddr/Len/Type ALWAYS contained in 1st fragment
* otherwise life gets too cumbersome for MIC and Encapsulation !!!!!!!!
if ( p->BUF_CNT >= 14 ) { alternatively: add a safety escape !!!!!!!!!!!! } */
#endif // HCF_TYPE_CCX
CALC_TX_MIC( NULL, -1 ); //initialize MIC
/*10*/ put_frag( ifbp, p->buf_addr, HCF_DASA_SIZE BE_PAR(0) ); //write DA, SA with MIC calculation
CALC_TX_MIC( p->buf_addr, HCF_DASA_SIZE ); //MIC over DA, SA
CALC_TX_MIC( null_addr, 4 ); //MIC over (virtual) priority field
#if (HCF_TYPE) & HCF_TYPE_CCX
//!!be careful do not use positive test on HCF_ACT_CCX_OFF, because IFB_CKIPStat is initially 0
if(( ifbp->IFB_CKIPStat == HCF_ACT_CCX_ON ) ||
((GET_BUF_CNT(p) >= 20 ) && ( ifbp->IFB_CKIPStat == HCF_ACT_CCX_OFF ) &&
(p->buf_addr[12] == 0xAA) && (p->buf_addr[13] == 0xAA) &&
(p->buf_addr[14] == 0x03) && (p->buf_addr[15] == 0x00) &&
(p->buf_addr[16] == 0x40) && (p->buf_addr[17] == 0x96) &&
(p->buf_addr[18] == 0x00) && (p->buf_addr[19] == 0x00)))
{
i = HCF_DASA_SIZE;
OPW( HREG_DATA_1, CNV_SHORT_TO_BIG( len - i ));
/* need to send out the remainder of the fragment */
put_frag( ifbp, &p->buf_addr[i], GET_BUF_CNT(p) - i BE_PAR(0) );
}
else
#endif // HCF_TYPE_CCX
{
//if encapsulation needed
#if (HCF_ENCAP) == HCF_ENC
//write length (with SNAP-header,Type, without //DA,SA,Length ) no MIC calc.
if ( ( snap_header[sizeof(snap_header)-1] = hcf_encap( &p->buf_addr[HCF_DASA_SIZE] ) ) != ENC_NONE ) {
OPW( HREG_DATA_1, CNV_END_SHORT( len + (sizeof(snap_header) + 2) - ( 2*6 + 2 ) ) );
//write splice with MIC calculation
put_frag( ifbp, snap_header, sizeof(snap_header) BE_PAR(0) );
CALC_TX_MIC( snap_header, sizeof(snap_header) ); //MIC over 6 byte SNAP
i = HCF_DASA_SIZE;
} else
#endif // HCF_ENC
{
OPW( HREG_DATA_1, *(wci_recordp)&p->buf_addr[HCF_DASA_SIZE] );
i = 14;
}
//complete 1st fragment starting with Type with MIC calculation
put_frag( ifbp, &p->buf_addr[i], p->BUF_CNT - i BE_PAR(0) );
CALC_TX_MIC( &p->buf_addr[i], p->BUF_CNT - i );
}
//do the remaining fragments with MIC calculation
while ( ( p = p->next_desc_addr ) != NULL ) {
/* obnoxious c:/hcf/hcf.c(1480) : warning C4769: conversion of near pointer to long integer,
* so skip */
HCFASSERT( ((hcf_32)p & 3 ) == 0, (hcf_32)p )
put_frag( ifbp, p->buf_addr, p->BUF_CNT BE_PAR(0) );
CALC_TX_MIC( p->buf_addr, p->BUF_CNT );
}
//pad message, finalize MIC calculation and write MIC to NIC
put_frag_finalize( ifbp );
}
if ( fid ) {
/*16*/ rc = cmd_exe( ifbp, HCMD_BUSY | HCMD_TX | HCMD_RECL, fid );
ifbp->IFB_TxFID = 0;
/* probably this (i.e. no RscInd AND "HREG_EV_ALLOC") at this point in time occurs so infrequent,
* that it might just as well be acceptable to skip this
* "optimization" code and handle that additional interrupt once in a while
*/
// 180 degree error in logic ;? #if ALLOC_15
/*20*/ if ( ifbp->IFB_RscInd == 0 ) {
ifbp->IFB_RscInd = get_fid( ifbp );
}
// #endif // ALLOC_15
}
// HCFASSERT( level::ifbp->IFB_RscInd, ifbp->IFB_RscInd )
HCFLOGEXIT( HCF_TRACE_SEND_MSG )
return rc;
} // hcf_send_msg
#endif // HCF_DL_ONLY
#if (HCF_DL_ONLY) == 0
/************************************************************************************************************
*
*.MODULE int hcf_service_nic( IFBP ifbp, wci_bufp bufp, unsigned int len )
*.PURPOSE Services (most) NIC events.
* Provides received message
* Provides status information.
*
*.ARGUMENTS
* ifbp address of the Interface Block
* In non-DMA mode:
* bufp address of char buffer, sufficiently large to hold the first part of the RxFS up through HFS_TYPE
* len length in bytes of buffer specified by bufp
* value between HFS_TYPE + 2 and HFS_ADDR_DEST + HCF_MAX_MSG
*
*.RETURNS
* HCF_SUCCESS
* HCF_ERR_MIC message contains an erroneous MIC (only if frame fits completely in bufp)