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android_kernel_samsung_sm86…/dp/htt/htt_tx.c
Prakash Dhavali 142cee4bf2 Initial host-common file folder cleanup and moves 
Initial host-common file folder cleanup and moves
on top of baseline reference of MCL WLAN driver
SU#5.0.0.160.

Move dp, ht comm, hif, wmi and qdf folders one level up

Change-Id: I2120898024b1eafd5d651c48768dbf48bf05995d
2016-03-03 01:02:02 -08:00

1167 lines
34 KiB
C
Raw Blame History

/*
* Copyright (c) 2011, 2014-2016 The Linux Foundation. All rights reserved.
*
* Previously licensed under the ISC license by Qualcomm Atheros, Inc.
*
*
* Permission to use, copy, modify, and/or distribute this software for
* any purpose with or without fee is hereby granted, provided that the
* above copyright notice and this permission notice appear in all
* copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
* WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
* AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This file was originally distributed by Qualcomm Atheros, Inc.
* under proprietary terms before Copyright ownership was assigned
* to the Linux Foundation.
*/
/**
* @file htt_tx.c
* @brief Implement transmit aspects of HTT.
* @details
* This file contains three categories of HTT tx code:
* 1. An abstraction of the tx descriptor, to hide the
* differences between the HL vs. LL tx descriptor.
* 2. Functions for allocating and freeing HTT tx descriptors.
* 3. The function that accepts a tx frame from txrx and sends the
* tx frame to HTC.
*/
#include <osdep.h> /* uint32_t, offsetof, etc. */
#include <cdf_types.h> /* cdf_dma_addr_t */
#include <cdf_memory.h> /* cdf_os_mem_alloc_consistent et al */
#include <cdf_nbuf.h> /* cdf_nbuf_t, etc. */
#include <cdf_time.h> /* cdf_mdelay */
#include <htt.h> /* htt_tx_msdu_desc_t */
#include <htc.h> /* HTC_HDR_LENGTH */
#include <htc_api.h> /* htc_flush_surprise_remove */
#include <ol_cfg.h> /* ol_cfg_netbuf_frags_max, etc. */
#include <ol_htt_tx_api.h> /* HTT_TX_DESC_VADDR_OFFSET */
#include <ol_txrx_htt_api.h> /* ol_tx_msdu_id_storage */
#include <ol_txrx_internal.h>
#include <htt_internal.h>
/* IPA Micro controler TX data packet HTT Header Preset */
/* 31 | 30 29 | 28 | 27 | 26 22 | 21 16 | 15 13 | 12 8 | 7 0
*----------------------------------------------------------------------------
* R | CS OL | R | PP | ext TID | vdev ID | pkt type | pkt subtyp | msg type
* 0 | 0 | 0 | | 0x1F | 0 | 2 | 0 | 0x01
***----------------------------------------------------------------------------
* pkt ID | pkt length
***----------------------------------------------------------------------------
* frag_desc_ptr
***----------------------------------------------------------------------------
* peer_id
***----------------------------------------------------------------------------
*/
#define HTT_IPA_UC_OFFLOAD_TX_HEADER_DEFAULT 0x07C04001
#if HTT_PADDR64
#define HTT_TX_DESC_FRAG_FIELD_HI_UPDATE(frag_filed_ptr) \
do { \
frag_filed_ptr++; \
/* frags_desc_ptr.hi */ \
*frag_filed_ptr = 0; \
} while (0)
#else
#define HTT_TX_DESC_FRAG_FIELD_HI_UPDATE(frag_filed_ptr) {}
#endif
/*--- setup / tear-down functions -------------------------------------------*/
#ifdef QCA_SUPPORT_TXDESC_SANITY_CHECKS
uint32_t *g_dbg_htt_desc_end_addr, *g_dbg_htt_desc_start_addr;
#endif
static cdf_dma_addr_t htt_tx_get_paddr(htt_pdev_handle pdev,
char *target_vaddr);
#ifdef HELIUMPLUS
/**
* htt_tx_desc_get_size() - get tx descripotrs size
* @pdev: htt device instance pointer
*
* This function will get HTT TX descriptor size and fragment descriptor size
*
* Return: None
*/
static void htt_tx_desc_get_size(struct htt_pdev_t *pdev)
{
pdev->tx_descs.size = sizeof(struct htt_host_tx_desc_t);
if (HTT_WIFI_IP_VERSION(pdev->wifi_ip_ver.major, 0x2)) {
/*
* sizeof MSDU_EXT/Fragmentation descriptor.
*/
pdev->frag_descs.size = sizeof(struct msdu_ext_desc_t);
} else {
/*
* Add the fragmentation descriptor elements.
* Add the most that the OS may deliver, plus one more
* in case the txrx code adds a prefix fragment (for
* TSO or audio interworking SNAP header)
*/
pdev->frag_descs.size =
(ol_cfg_netbuf_frags_max(pdev->ctrl_pdev)+1) * 8
+ 4;
}
}
/**
* htt_tx_frag_desc_field_update() - Update fragment descriptor field
* @pdev: htt device instance pointer
* @fptr: Fragment descriptor field pointer
* @index: Descriptor index to find page and offset
* @desc_v_ptr: descriptor virtual pointot to find offset
*
* This function will update fragment descriptor field with actual fragment
* descriptor stating physical pointer
*
* Return: None
*/
static void htt_tx_frag_desc_field_update(struct htt_pdev_t *pdev,
uint32_t *fptr, unsigned int index,
struct htt_tx_msdu_desc_t *desc_v_ptr)
{
unsigned int target_page;
unsigned int offset;
struct cdf_mem_dma_page_t *dma_page;
target_page = index / pdev->frag_descs.desc_pages.num_element_per_page;
offset = index % pdev->frag_descs.desc_pages.num_element_per_page;
dma_page = &pdev->frag_descs.desc_pages.dma_pages[target_page];
*fptr = (uint32_t)(dma_page->page_p_addr +
offset * pdev->frag_descs.size);
HTT_TX_DESC_FRAG_FIELD_HI_UPDATE(fptr);
return;
}
/**
* htt_tx_frag_desc_attach() - Attach fragment descriptor
* @pdev: htt device instance pointer
* @desc_pool_elems: Number of fragment descriptor
*
* This function will allocate fragment descriptor
*
* Return: 0 success
*/
static int htt_tx_frag_desc_attach(struct htt_pdev_t *pdev,
uint16_t desc_pool_elems)
{
pdev->frag_descs.pool_elems = desc_pool_elems;
cdf_mem_multi_pages_alloc(pdev->osdev, &pdev->frag_descs.desc_pages,
pdev->frag_descs.size, desc_pool_elems,
cdf_get_dma_mem_context((&pdev->frag_descs), memctx), false);
if ((0 == pdev->frag_descs.desc_pages.num_pages) ||
(NULL == pdev->frag_descs.desc_pages.dma_pages)) {
TXRX_PRINT(TXRX_PRINT_LEVEL_ERR,
"FRAG descriptor alloc fail");
return -ENOBUFS;
}
return 0;
}
/**
* htt_tx_frag_desc_detach() - Detach fragment descriptor
* @pdev: htt device instance pointer
*
* This function will free fragment descriptor
*
* Return: None
*/
static void htt_tx_frag_desc_detach(struct htt_pdev_t *pdev)
{
cdf_mem_multi_pages_free(pdev->osdev, &pdev->frag_descs.desc_pages,
cdf_get_dma_mem_context((&pdev->frag_descs), memctx), false);
}
/**
* htt_tx_frag_alloc() - Allocate single fragment descriptor from the pool
* @pdev: htt device instance pointer
* @index: Descriptor index
* @frag_paddr_lo: Fragment descriptor physical address
* @frag_ptr: Fragment descriptor virtual address
*
* This function will free fragment descriptor
*
* Return: None
*/
int htt_tx_frag_alloc(htt_pdev_handle pdev,
u_int16_t index, u_int32_t *frag_paddr_lo, void **frag_ptr)
{
uint16_t frag_page_index;
uint16_t frag_elem_index;
struct cdf_mem_dma_page_t *dma_page;
/** Index should never be 0, since its used by the hardware
to terminate the link. */
if (index >= pdev->tx_descs.pool_elems) {
*frag_ptr = NULL;
return 1;
}
frag_page_index = index /
pdev->frag_descs.desc_pages.num_element_per_page;
frag_elem_index = index %
pdev->frag_descs.desc_pages.num_element_per_page;
dma_page = &pdev->frag_descs.desc_pages.dma_pages[frag_page_index];
*frag_ptr = dma_page->page_v_addr_start +
frag_elem_index * pdev->frag_descs.size;
if (((char *)(*frag_ptr) < dma_page->page_v_addr_start) ||
((char *)(*frag_ptr) > dma_page->page_v_addr_end)) {
*frag_ptr = NULL;
return 1;
}
*frag_paddr_lo = dma_page->page_p_addr +
frag_elem_index * pdev->frag_descs.size;
return 0;
}
#else
/**
* htt_tx_desc_get_size() - get tx descripotrs size
* @pdev: htt device instance pointer
*
* This function will get HTT TX descriptor size and fragment descriptor size
*
* Return: None
*/
static inline void htt_tx_desc_get_size(struct htt_pdev_t *pdev)
{
/*
* Start with the size of the base struct
* that actually gets downloaded.
*
* Add the fragmentation descriptor elements.
* Add the most that the OS may deliver, plus one more
* in case the txrx code adds a prefix fragment (for
* TSO or audio interworking SNAP header)
*/
pdev->tx_descs.size =
sizeof(struct htt_host_tx_desc_t)
+ (ol_cfg_netbuf_frags_max(pdev->ctrl_pdev) + 1) * 8
/* 2x uint32_t */
+ 4; /* uint32_t fragmentation list terminator */
}
/**
* htt_tx_frag_desc_field_update() - Update fragment descriptor field
* @pdev: htt device instance pointer
* @fptr: Fragment descriptor field pointer
* @index: Descriptor index to find page and offset
* @desc_v_ptr: descriptor virtual pointot to find offset
*
* This function will update fragment descriptor field with actual fragment
* descriptor stating physical pointer
*
* Return: None
*/
static void htt_tx_frag_desc_field_update(struct htt_pdev_t *pdev,
uint32_t *fptr, unsigned int index,
struct htt_tx_msdu_desc_t *desc_v_ptr)
{
*fptr = (uint32_t)htt_tx_get_paddr(pdev, (char *)desc_v_ptr) +
HTT_TX_DESC_LEN;
}
/**
* htt_tx_frag_desc_attach() - Attach fragment descriptor
* @pdev: htt device instance pointer
* @desc_pool_elems: Number of fragment descriptor
*
* This function will allocate fragment descriptor
*
* Return: 0 success
*/
static inline int htt_tx_frag_desc_attach(struct htt_pdev_t *pdev,
int desc_pool_elems)
{
return 0;
}
/**
* htt_tx_frag_desc_detach() - Detach fragment descriptor
* @pdev: htt device instance pointer
*
* This function will free fragment descriptor
*
* Return: None
*/
static void htt_tx_frag_desc_detach(struct htt_pdev_t *pdev) {}
#endif /* HELIUMPLUS */
/**
* htt_tx_attach() - Attach HTT device instance
* @pdev: htt device instance pointer
* @desc_pool_elems: Number of TX descriptors
*
* This function will allocate HTT TX resources
*
* Return: 0 Success
*/
int htt_tx_attach(struct htt_pdev_t *pdev, int desc_pool_elems)
{
int i, i_int, pool_size;
uint32_t **p;
struct cdf_mem_dma_page_t *page_info;
uint32_t num_link = 0;
uint16_t num_page, num_desc_per_page;
htt_tx_desc_get_size(pdev);
/*
* Make sure tx_descs.size is a multiple of 4-bytes.
* It should be, but round up just to be sure.
*/
pdev->tx_descs.size = (pdev->tx_descs.size + 3) & (~0x3);
pdev->tx_descs.pool_elems = desc_pool_elems;
pdev->tx_descs.alloc_cnt = 0;
pool_size = pdev->tx_descs.pool_elems * pdev->tx_descs.size;
cdf_mem_multi_pages_alloc(pdev->osdev, &pdev->tx_descs.desc_pages,
pdev->tx_descs.size, pdev->tx_descs.pool_elems,
cdf_get_dma_mem_context((&pdev->tx_descs), memctx), false);
if ((0 == pdev->tx_descs.desc_pages.num_pages) ||
(NULL == pdev->tx_descs.desc_pages.dma_pages)) {
TXRX_PRINT(TXRX_PRINT_LEVEL_ERR,
"HTT desc alloc fail");
goto out_fail;
}
num_page = pdev->tx_descs.desc_pages.num_pages;
num_desc_per_page = pdev->tx_descs.desc_pages.num_element_per_page;
/* link tx descriptors into a freelist */
page_info = pdev->tx_descs.desc_pages.dma_pages;
pdev->tx_descs.freelist = (uint32_t *)page_info->page_v_addr_start;
p = (uint32_t **) pdev->tx_descs.freelist;
for (i = 0; i < num_page; i++) {
for (i_int = 0; i_int < num_desc_per_page; i_int++) {
if (i_int == (num_desc_per_page - 1)) {
/*
* Last element on this page,
* should pint next page */
if (!page_info->page_v_addr_start) {
TXRX_PRINT(TXRX_PRINT_LEVEL_ERR,
"over flow num link %d\n",
num_link);
goto free_htt_desc;
}
page_info++;
*p = (uint32_t *)page_info->page_v_addr_start;
} else {
*p = (uint32_t *)
(((char *) p) + pdev->tx_descs.size);
}
num_link++;
p = (uint32_t **) *p;
/* Last link established exit */
if (num_link == (pdev->tx_descs.pool_elems - 1))
break;
}
}
*p = NULL;
if (htt_tx_frag_desc_attach(pdev, desc_pool_elems)) {
TXRX_PRINT(TXRX_PRINT_LEVEL_ERR,
"HTT Frag descriptor alloc fail");
goto free_htt_desc;
}
/* success */
return 0;
free_htt_desc:
cdf_mem_multi_pages_free(pdev->osdev, &pdev->tx_descs.desc_pages,
cdf_get_dma_mem_context((&pdev->tx_descs), memctx), false);
out_fail:
return -ENOBUFS;
}
void htt_tx_detach(struct htt_pdev_t *pdev)
{
if (!pdev) {
cdf_print("htt tx detach invalid instance");
return;
}
htt_tx_frag_desc_detach(pdev);
cdf_mem_multi_pages_free(pdev->osdev, &pdev->tx_descs.desc_pages,
cdf_get_dma_mem_context((&pdev->tx_descs), memctx), false);
}
/**
* htt_tx_get_paddr() - get physical address for htt desc
*
* Get HTT descriptor physical address from virtaul address
* Find page first and find offset
*
* Return: Physical address of descriptor
*/
static cdf_dma_addr_t htt_tx_get_paddr(htt_pdev_handle pdev,
char *target_vaddr)
{
uint16_t i;
struct cdf_mem_dma_page_t *page_info = NULL;
uint64_t offset;
for (i = 0; i < pdev->tx_descs.desc_pages.num_pages; i++) {
page_info = pdev->tx_descs.desc_pages.dma_pages + i;
if (!page_info->page_v_addr_start) {
cdf_assert(0);
return 0;
}
if ((target_vaddr >= page_info->page_v_addr_start) &&
(target_vaddr <= page_info->page_v_addr_end))
break;
}
if (!page_info) {
TXRX_PRINT(TXRX_PRINT_LEVEL_ERR, "invalid page_info");
return 0;
}
offset = (uint64_t)(target_vaddr - page_info->page_v_addr_start);
return page_info->page_p_addr + offset;
}
/*--- descriptor allocation functions ---------------------------------------*/
void *htt_tx_desc_alloc(htt_pdev_handle pdev, uint32_t *paddr_lo,
uint16_t index)
{
struct htt_host_tx_desc_t *htt_host_tx_desc; /* includes HTC hdr */
struct htt_tx_msdu_desc_t *htt_tx_desc; /* doesn't include HTC hdr */
uint32_t *fragmentation_descr_field_ptr;
htt_host_tx_desc = (struct htt_host_tx_desc_t *)pdev->tx_descs.freelist;
if (!htt_host_tx_desc)
return NULL; /* pool is exhausted */
htt_tx_desc = &htt_host_tx_desc->align32.tx_desc;
if (pdev->tx_descs.freelist) {
pdev->tx_descs.freelist =
*((uint32_t **) pdev->tx_descs.freelist);
pdev->tx_descs.alloc_cnt++;
}
/*
* For LL, set up the fragmentation descriptor address.
* Currently, this HTT tx desc allocation is performed once up front.
* If this is changed to have the allocation done during tx, then it
* would be helpful to have separate htt_tx_desc_alloc functions for
* HL vs. LL, to remove the below conditional branch.
*/
fragmentation_descr_field_ptr = (uint32_t *)
((uint32_t *) htt_tx_desc) +
HTT_TX_DESC_FRAGS_DESC_PADDR_OFFSET_DWORD;
/*
* The fragmentation descriptor is allocated from consistent
* memory. Therefore, we can use the address directly rather
* than having to map it from a virtual/CPU address to a
* physical/bus address.
*/
htt_tx_frag_desc_field_update(pdev, fragmentation_descr_field_ptr,
index, htt_tx_desc);
/*
* Include the headroom for the HTC frame header when specifying the
* physical address for the HTT tx descriptor.
*/
*paddr_lo = (uint32_t)htt_tx_get_paddr(pdev, (char *)htt_host_tx_desc);
/*
* The allocated tx descriptor space includes headroom for a
* HTC frame header. Hide this headroom, so that we don't have
* to jump past the headroom each time we program a field within
* the tx desc, but only once when we download the tx desc (and
* the headroom) to the target via HTC.
* Skip past the headroom and return the address of the HTT tx desc.
*/
return (void *)htt_tx_desc;
}
void htt_tx_desc_free(htt_pdev_handle pdev, void *tx_desc)
{
char *htt_host_tx_desc = tx_desc;
/* rewind over the HTC frame header space */
htt_host_tx_desc -=
offsetof(struct htt_host_tx_desc_t, align32.tx_desc);
*((uint32_t **) htt_host_tx_desc) = pdev->tx_descs.freelist;
pdev->tx_descs.freelist = (uint32_t *) htt_host_tx_desc;
pdev->tx_descs.alloc_cnt--;
}
/*--- descriptor field access methods ---------------------------------------*/
void htt_tx_desc_frags_table_set(htt_pdev_handle pdev,
void *htt_tx_desc,
uint32_t paddr,
uint32_t frag_desc_paddr_lo,
int reset)
{
uint32_t *fragmentation_descr_field_ptr;
fragmentation_descr_field_ptr = (uint32_t *)
((uint32_t *) htt_tx_desc) +
HTT_TX_DESC_FRAGS_DESC_PADDR_OFFSET_DWORD;
if (reset) {
#if defined(HELIUMPLUS_PADDR64)
*fragmentation_descr_field_ptr = frag_desc_paddr_lo;
#else
*fragmentation_descr_field_ptr =
htt_tx_get_paddr(pdev, htt_tx_desc) + HTT_TX_DESC_LEN;
#endif
} else {
*fragmentation_descr_field_ptr = paddr;
}
}
/* PUT THESE AS INLINE IN ol_htt_tx_api.h */
void htt_tx_desc_flag_postponed(htt_pdev_handle pdev, void *desc)
{
}
void htt_tx_pending_discard(htt_pdev_handle pdev)
{
htc_flush_surprise_remove(pdev->htc_pdev);
}
void htt_tx_desc_flag_batch_more(htt_pdev_handle pdev, void *desc)
{
}
/*--- tx send function ------------------------------------------------------*/
#ifdef ATH_11AC_TXCOMPACT
/* Scheduling the Queued packets in HTT which could not be sent out
because of No CE desc*/
void htt_tx_sched(htt_pdev_handle pdev)
{
cdf_nbuf_t msdu;
int download_len = pdev->download_len;
int packet_len;
HTT_TX_NBUF_QUEUE_REMOVE(pdev, msdu);
while (msdu != NULL) {
int not_accepted;
/* packet length includes HTT tx desc frag added above */
packet_len = cdf_nbuf_len(msdu);
if (packet_len < download_len) {
/*
* This case of packet length being less than the
* nominal download length can happen for a couple
* of reasons:
* In HL, the nominal download length is a large
* artificial value.
* In LL, the frame may not have the optional header
* fields accounted for in the nominal download size
* (LLC/SNAP header, IPv4 or IPv6 header).
*/
download_len = packet_len;
}
not_accepted =
htc_send_data_pkt(pdev->htc_pdev, msdu,
pdev->htc_endpoint,
download_len);
if (not_accepted) {
HTT_TX_NBUF_QUEUE_INSERT_HEAD(pdev, msdu);
return;
}
HTT_TX_NBUF_QUEUE_REMOVE(pdev, msdu);
}
}
int htt_tx_send_std(htt_pdev_handle pdev, cdf_nbuf_t msdu, uint16_t msdu_id)
{
int download_len = pdev->download_len;
int packet_len;
/* packet length includes HTT tx desc frag added above */
packet_len = cdf_nbuf_len(msdu);
if (packet_len < download_len) {
/*
* This case of packet length being less than the nominal
* download length can happen for a couple of reasons:
* In HL, the nominal download length is a large artificial
* value.
* In LL, the frame may not have the optional header fields
* accounted for in the nominal download size (LLC/SNAP header,
* IPv4 or IPv6 header).
*/
download_len = packet_len;
}
NBUF_UPDATE_TX_PKT_COUNT(msdu, NBUF_TX_PKT_HTT);
DPTRACE(cdf_dp_trace(msdu, CDF_DP_TRACE_HTT_PACKET_PTR_RECORD,
(uint8_t *)(cdf_nbuf_data(msdu)),
sizeof(cdf_nbuf_data(msdu))));
if (cdf_nbuf_queue_len(&pdev->txnbufq) > 0) {
HTT_TX_NBUF_QUEUE_ADD(pdev, msdu);
htt_tx_sched(pdev);
return 0;
}
cdf_nbuf_trace_update(msdu, "HT:T:");
if (htc_send_data_pkt
(pdev->htc_pdev, msdu, pdev->htc_endpoint, download_len)) {
HTT_TX_NBUF_QUEUE_ADD(pdev, msdu);
}
return 0; /* success */
}
#ifdef FEATURE_RUNTIME_PM
/**
* htt_tx_resume_handler() - resume callback for the htt endpoint
* @context: a pointer to the htt context
*
* runs htt_tx_sched.
*/
void htt_tx_resume_handler(void *context)
{
struct htt_pdev_t *pdev = (struct htt_pdev_t *) context;
htt_tx_sched(pdev);
}
#else
void
htt_tx_resume_handler(void *context) { }
#endif
cdf_nbuf_t
htt_tx_send_batch(htt_pdev_handle pdev, cdf_nbuf_t head_msdu, int num_msdus)
{
cdf_print("*** %s curently only applies for HL systems\n", __func__);
cdf_assert(0);
return head_msdu;
}
int
htt_tx_send_nonstd(htt_pdev_handle pdev,
cdf_nbuf_t msdu,
uint16_t msdu_id, enum htt_pkt_type pkt_type)
{
int download_len;
/*
* The pkt_type could be checked to see what L2 header type is present,
* and then the L2 header could be examined to determine its length.
* But for simplicity, just use the maximum possible header size,
* rather than computing the actual header size.
*/
download_len = sizeof(struct htt_host_tx_desc_t)
+ HTT_TX_HDR_SIZE_OUTER_HDR_MAX /* worst case */
+ HTT_TX_HDR_SIZE_802_1Q
+ HTT_TX_HDR_SIZE_LLC_SNAP
+ ol_cfg_tx_download_size(pdev->ctrl_pdev);
cdf_assert(download_len <= pdev->download_len);
return htt_tx_send_std(pdev, msdu, msdu_id);
}
#else /*ATH_11AC_TXCOMPACT */
#ifdef QCA_TX_HTT2_SUPPORT
static inline HTC_ENDPOINT_ID
htt_tx_htt2_get_ep_id(htt_pdev_handle pdev, cdf_nbuf_t msdu)
{
/*
* TX HTT2 service mainly for small sized frame and check if
* this candidate frame allow or not.
*/
if ((pdev->htc_tx_htt2_endpoint != ENDPOINT_UNUSED) &&
cdf_nbuf_get_tx_parallel_dnload_frm(msdu) &&
(cdf_nbuf_len(msdu) < pdev->htc_tx_htt2_max_size))
return pdev->htc_tx_htt2_endpoint;
else
return pdev->htc_endpoint;
}
#else
#define htt_tx_htt2_get_ep_id(pdev, msdu) (pdev->htc_endpoint)
#endif /* QCA_TX_HTT2_SUPPORT */
static inline int
htt_tx_send_base(htt_pdev_handle pdev,
cdf_nbuf_t msdu,
uint16_t msdu_id, int download_len, uint8_t more_data)
{
struct htt_host_tx_desc_t *htt_host_tx_desc;
struct htt_htc_pkt *pkt;
int packet_len;
HTC_ENDPOINT_ID ep_id;
/*
* The HTT tx descriptor was attached as the prefix fragment to the
* msdu netbuf during the call to htt_tx_desc_init.
* Retrieve it so we can provide its HTC header space to HTC.
*/
htt_host_tx_desc = (struct htt_host_tx_desc_t *)
cdf_nbuf_get_frag_vaddr(msdu, 0);
pkt = htt_htc_pkt_alloc(pdev);
if (!pkt)
return -ENOBUFS; /* failure */
pkt->msdu_id = msdu_id;
pkt->pdev_ctxt = pdev->txrx_pdev;
/* packet length includes HTT tx desc frag added above */
packet_len = cdf_nbuf_len(msdu);
if (packet_len < download_len) {
/*
* This case of packet length being less than the nominal
* download length can happen for a couple reasons:
* In HL, the nominal download length is a large artificial
* value.
* In LL, the frame may not have the optional header fields
* accounted for in the nominal download size (LLC/SNAP header,
* IPv4 or IPv6 header).
*/
download_len = packet_len;
}
ep_id = htt_tx_htt2_get_ep_id(pdev, msdu);
SET_HTC_PACKET_INFO_TX(&pkt->htc_pkt,
pdev->tx_send_complete_part2,
(unsigned char *)htt_host_tx_desc,
download_len - HTC_HDR_LENGTH,
ep_id,
1); /* tag - not relevant here */
SET_HTC_PACKET_NET_BUF_CONTEXT(&pkt->htc_pkt, msdu);
cdf_nbuf_trace_update(msdu, "HT:T:");
NBUF_UPDATE_TX_PKT_COUNT(msdu, NBUF_TX_PKT_HTT);
DPTRACE(cdf_dp_trace(msdu, CDF_DP_TRACE_HTT_PACKET_PTR_RECORD,
(uint8_t *)(cdf_nbuf_data(msdu)),
sizeof(cdf_nbuf_data(msdu))));
htc_send_data_pkt(pdev->htc_pdev, &pkt->htc_pkt, more_data);
return 0; /* success */
}
cdf_nbuf_t
htt_tx_send_batch(htt_pdev_handle pdev, cdf_nbuf_t head_msdu, int num_msdus)
{
cdf_nbuf_t rejected = NULL;
uint16_t *msdu_id_storage;
uint16_t msdu_id;
cdf_nbuf_t msdu;
/*
* FOR NOW, iterate through the batch, sending the frames singly.
* Eventually HTC and HIF should be able to accept a batch of
* data frames rather than singles.
*/
msdu = head_msdu;
while (num_msdus--) {
cdf_nbuf_t next_msdu = cdf_nbuf_next(msdu);
msdu_id_storage = ol_tx_msdu_id_storage(msdu);
msdu_id = *msdu_id_storage;
/* htt_tx_send_base returns 0 as success and 1 as failure */
if (htt_tx_send_base(pdev, msdu, msdu_id, pdev->download_len,
num_msdus)) {
cdf_nbuf_set_next(msdu, rejected);
rejected = msdu;
}
msdu = next_msdu;
}
return rejected;
}
int
htt_tx_send_nonstd(htt_pdev_handle pdev,
cdf_nbuf_t msdu,
uint16_t msdu_id, enum htt_pkt_type pkt_type)
{
int download_len;
/*
* The pkt_type could be checked to see what L2 header type is present,
* and then the L2 header could be examined to determine its length.
* But for simplicity, just use the maximum possible header size,
* rather than computing the actual header size.
*/
download_len = sizeof(struct htt_host_tx_desc_t)
+ HTT_TX_HDR_SIZE_OUTER_HDR_MAX /* worst case */
+ HTT_TX_HDR_SIZE_802_1Q
+ HTT_TX_HDR_SIZE_LLC_SNAP
+ ol_cfg_tx_download_size(pdev->ctrl_pdev);
return htt_tx_send_base(pdev, msdu, msdu_id, download_len, 0);
}
int htt_tx_send_std(htt_pdev_handle pdev, cdf_nbuf_t msdu, uint16_t msdu_id)
{
return htt_tx_send_base(pdev, msdu, msdu_id, pdev->download_len, 0);
}
#endif /*ATH_11AC_TXCOMPACT */
#ifdef HTT_DBG
void htt_tx_desc_display(void *tx_desc)
{
struct htt_tx_msdu_desc_t *htt_tx_desc;
htt_tx_desc = (struct htt_tx_msdu_desc_t *)tx_desc;
/* only works for little-endian */
cdf_print("HTT tx desc (@ %p):\n", htt_tx_desc);
cdf_print(" msg type = %d\n", htt_tx_desc->msg_type);
cdf_print(" pkt subtype = %d\n", htt_tx_desc->pkt_subtype);
cdf_print(" pkt type = %d\n", htt_tx_desc->pkt_type);
cdf_print(" vdev ID = %d\n", htt_tx_desc->vdev_id);
cdf_print(" ext TID = %d\n", htt_tx_desc->ext_tid);
cdf_print(" postponed = %d\n", htt_tx_desc->postponed);
#if HTT_PADDR64
cdf_print(" reserved_dword0_bits28 = %d\n", htt_tx_desc->reserved_dword0_bits28);
cdf_print(" cksum_offload = %d\n", htt_tx_desc->cksum_offload);
cdf_print(" tx_compl_req= %d\n", htt_tx_desc->tx_compl_req);
#else /* !HTT_PADDR64 */
cdf_print(" batch more = %d\n", htt_tx_desc->more_in_batch);
#endif /* HTT_PADDR64 */
cdf_print(" length = %d\n", htt_tx_desc->len);
cdf_print(" id = %d\n", htt_tx_desc->id);
#if HTT_PADDR64
cdf_print(" frag desc addr.lo = %#x\n",
htt_tx_desc->frags_desc_ptr.lo);
cdf_print(" frag desc addr.hi = %#x\n",
htt_tx_desc->frags_desc_ptr.hi);
cdf_print(" peerid = %d\n", htt_tx_desc->peerid);
cdf_print(" chanfreq = %d\n", htt_tx_desc->chanfreq);
#else /* ! HTT_PADDR64 */
cdf_print(" frag desc addr = %#x\n", htt_tx_desc->frags_desc_ptr);
#endif /* HTT_PADDR64 */
}
#endif
#ifdef IPA_OFFLOAD
#ifdef QCA_WIFI_2_0
/**
* htt_tx_ipa_uc_wdi_tx_buf_alloc() - Alloc WDI TX buffers
* @pdev: htt context
* @uc_tx_buf_sz: TX buffer size
* @uc_tx_buf_cnt: TX Buffer count
* @uc_tx_partition_base: IPA UC TX partition base value
*
* Allocate WDI TX buffers. Also note Rome supports only WDI 1.0.
*
* Return: 0 success
*/
int htt_tx_ipa_uc_wdi_tx_buf_alloc(struct htt_pdev_t *pdev,
unsigned int uc_tx_buf_sz,
unsigned int uc_tx_buf_cnt,
unsigned int uc_tx_partition_base)
{
unsigned int tx_buffer_count;
cdf_nbuf_t buffer_vaddr;
cdf_dma_addr_t buffer_paddr;
uint32_t *header_ptr;
uint32_t *ring_vaddr;
#define IPA_UC_TX_BUF_FRAG_DESC_OFFSET 16
#define IPA_UC_TX_BUF_FRAG_HDR_OFFSET 32
ring_vaddr = pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr;
/* Allocate TX buffers as many as possible */
for (tx_buffer_count = 0;
tx_buffer_count < (uc_tx_buf_cnt - 1); tx_buffer_count++) {
buffer_vaddr = cdf_nbuf_alloc(pdev->osdev,
uc_tx_buf_sz, 0, 4, false);
if (!buffer_vaddr) {
cdf_print("%s: TX BUF alloc fail, loop index: %d",
__func__, tx_buffer_count);
return tx_buffer_count;
}
/* Init buffer */
cdf_mem_zero(cdf_nbuf_data(buffer_vaddr), uc_tx_buf_sz);
header_ptr = (uint32_t *) cdf_nbuf_data(buffer_vaddr);
/* HTT control header */
*header_ptr = HTT_IPA_UC_OFFLOAD_TX_HEADER_DEFAULT;
header_ptr++;
/* PKT ID */
*header_ptr |= ((uint16_t) uc_tx_partition_base +
tx_buffer_count) << 16;
cdf_nbuf_map(pdev->osdev, buffer_vaddr, CDF_DMA_BIDIRECTIONAL);
buffer_paddr = cdf_nbuf_get_frag_paddr_lo(buffer_vaddr, 0);
header_ptr++;
*header_ptr = (uint32_t) (buffer_paddr +
IPA_UC_TX_BUF_FRAG_DESC_OFFSET);
header_ptr++;
*header_ptr = 0xFFFFFFFF;
/* FRAG Header */
header_ptr++;
*header_ptr = buffer_paddr + IPA_UC_TX_BUF_FRAG_HDR_OFFSET;
*ring_vaddr = buffer_paddr;
pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg[tx_buffer_count] =
buffer_vaddr;
/* Memory barrier to ensure actual value updated */
ring_vaddr++;
}
return tx_buffer_count;
}
#else
int htt_tx_ipa_uc_wdi_tx_buf_alloc(struct htt_pdev_t *pdev,
unsigned int uc_tx_buf_sz,
unsigned int uc_tx_buf_cnt,
unsigned int uc_tx_partition_base)
{
unsigned int tx_buffer_count;
cdf_nbuf_t buffer_vaddr;
uint32_t buffer_paddr;
uint32_t *header_ptr;
uint32_t *ring_vaddr;
#define IPA_UC_TX_BUF_FRAG_DESC_OFFSET 20
#define IPA_UC_TX_BUF_FRAG_HDR_OFFSET 64
#define IPA_UC_TX_BUF_TSO_HDR_SIZE 6
ring_vaddr = pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr;
/* Allocate TX buffers as many as possible */
for (tx_buffer_count = 0;
tx_buffer_count < (uc_tx_buf_cnt - 1); tx_buffer_count++) {
buffer_vaddr = cdf_nbuf_alloc(pdev->osdev,
uc_tx_buf_sz, 0, 4, false);
if (!buffer_vaddr) {
cdf_print("%s: TX BUF alloc fail, loop index: %d",
__func__, tx_buffer_count);
return tx_buffer_count;
}
/* Init buffer */
cdf_mem_zero(cdf_nbuf_data(buffer_vaddr), uc_tx_buf_sz);
header_ptr = (uint32_t *) cdf_nbuf_data(buffer_vaddr);
/* HTT control header */
*header_ptr = HTT_IPA_UC_OFFLOAD_TX_HEADER_DEFAULT;
header_ptr++;
/* PKT ID */
*header_ptr |= ((uint16_t) uc_tx_partition_base +
tx_buffer_count) << 16;
cdf_nbuf_map(pdev->osdev, buffer_vaddr, CDF_DMA_BIDIRECTIONAL);
buffer_paddr = cdf_nbuf_get_frag_paddr_lo(buffer_vaddr, 0);
header_ptr++;
/* Frag Desc Pointer */
/* 64bits descriptor, Low 32bits */
*header_ptr = (uint32_t) (buffer_paddr +
IPA_UC_TX_BUF_FRAG_DESC_OFFSET);
header_ptr++;
/* 64bits descriptor, high 32bits */
*header_ptr = 0;
header_ptr++;
/* chanreq, peerid */
*header_ptr = 0xFFFFFFFF;
header_ptr++;
/* FRAG Header */
/* 6 words TSO header */
header_ptr += IPA_UC_TX_BUF_TSO_HDR_SIZE;
*header_ptr = buffer_paddr + IPA_UC_TX_BUF_FRAG_HDR_OFFSET;
*ring_vaddr = buffer_paddr;
pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg[tx_buffer_count] =
buffer_vaddr;
/* Memory barrier to ensure actual value updated */
ring_vaddr += 2;
}
return tx_buffer_count;
}
#endif
/**
* htt_tx_ipa_uc_attach() - attach htt ipa uc tx resource
* @pdev: htt context
* @uc_tx_buf_sz: single tx buffer size
* @uc_tx_buf_cnt: total tx buffer count
* @uc_tx_partition_base: tx buffer partition start
*
* Return: 0 success
* ENOBUFS No memory fail
*/
int htt_tx_ipa_uc_attach(struct htt_pdev_t *pdev,
unsigned int uc_tx_buf_sz,
unsigned int uc_tx_buf_cnt,
unsigned int uc_tx_partition_base)
{
int return_code = 0;
unsigned int tx_comp_ring_size;
/* Allocate CE Write Index WORD */
pdev->ipa_uc_tx_rsc.tx_ce_idx.vaddr =
cdf_os_mem_alloc_consistent(
pdev->osdev,
4,
&pdev->ipa_uc_tx_rsc.tx_ce_idx.paddr,
cdf_get_dma_mem_context(
(&pdev->ipa_uc_tx_rsc.tx_ce_idx),
memctx));
if (!pdev->ipa_uc_tx_rsc.tx_ce_idx.vaddr) {
cdf_print("%s: CE Write Index WORD alloc fail", __func__);
return -ENOBUFS;
}
/* Allocate TX COMP Ring */
tx_comp_ring_size = uc_tx_buf_cnt * sizeof(cdf_nbuf_t);
pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr =
cdf_os_mem_alloc_consistent(
pdev->osdev,
tx_comp_ring_size,
&pdev->ipa_uc_tx_rsc.tx_comp_base.paddr,
cdf_get_dma_mem_context((&pdev->ipa_uc_tx_rsc.
tx_comp_base),
memctx));
if (!pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr) {
cdf_print("%s: TX COMP ring alloc fail", __func__);
return_code = -ENOBUFS;
goto free_tx_ce_idx;
}
cdf_mem_zero(pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr, tx_comp_ring_size);
/* Allocate TX BUF vAddress Storage */
pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg =
(cdf_nbuf_t *) cdf_mem_malloc(uc_tx_buf_cnt *
sizeof(cdf_nbuf_t));
if (!pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg) {
cdf_print("%s: TX BUF POOL vaddr storage alloc fail", __func__);
return_code = -ENOBUFS;
goto free_tx_comp_base;
}
cdf_mem_zero(pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg,
uc_tx_buf_cnt * sizeof(cdf_nbuf_t));
pdev->ipa_uc_tx_rsc.alloc_tx_buf_cnt = htt_tx_ipa_uc_wdi_tx_buf_alloc(
pdev, uc_tx_buf_sz, uc_tx_buf_cnt, uc_tx_partition_base);
return 0;
free_tx_comp_base:
cdf_os_mem_free_consistent(pdev->osdev,
ol_cfg_ipa_uc_tx_max_buf_cnt(pdev->
ctrl_pdev) * 4,
pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr,
pdev->ipa_uc_tx_rsc.tx_comp_base.paddr,
cdf_get_dma_mem_context((&pdev->
ipa_uc_tx_rsc.
tx_comp_base),
memctx));
free_tx_ce_idx:
cdf_os_mem_free_consistent(pdev->osdev,
4,
pdev->ipa_uc_tx_rsc.tx_ce_idx.vaddr,
pdev->ipa_uc_tx_rsc.tx_ce_idx.paddr,
cdf_get_dma_mem_context((&pdev->
ipa_uc_tx_rsc.
tx_ce_idx),
memctx));
return return_code;
}
int htt_tx_ipa_uc_detach(struct htt_pdev_t *pdev)
{
uint16_t idx;
if (pdev->ipa_uc_tx_rsc.tx_ce_idx.vaddr) {
cdf_os_mem_free_consistent(
pdev->osdev,
4,
pdev->ipa_uc_tx_rsc.tx_ce_idx.vaddr,
pdev->ipa_uc_tx_rsc.tx_ce_idx.paddr,
cdf_get_dma_mem_context(
(&pdev->ipa_uc_tx_rsc.tx_ce_idx),
memctx));
}
if (pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr) {
cdf_os_mem_free_consistent(
pdev->osdev,
ol_cfg_ipa_uc_tx_max_buf_cnt(pdev->ctrl_pdev) * 4,
pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr,
pdev->ipa_uc_tx_rsc.tx_comp_base.paddr,
cdf_get_dma_mem_context((&pdev->ipa_uc_tx_rsc.
tx_comp_base),
memctx));
}
/* Free each single buffer */
for (idx = 0; idx < pdev->ipa_uc_tx_rsc.alloc_tx_buf_cnt; idx++) {
if (pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg[idx]) {
cdf_nbuf_unmap(pdev->osdev,
pdev->ipa_uc_tx_rsc.
tx_buf_pool_vaddr_strg[idx],
CDF_DMA_FROM_DEVICE);
cdf_nbuf_free(pdev->ipa_uc_tx_rsc.
tx_buf_pool_vaddr_strg[idx]);
}
}
/* Free storage */
cdf_mem_free(pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg);
return 0;
}
#endif /* IPA_OFFLOAD */
#if defined(FEATURE_TSO)
void
htt_tx_desc_fill_tso_info(htt_pdev_handle pdev, void *desc,
struct cdf_tso_info_t *tso_info)
{
u_int32_t *word;
int i;
struct cdf_tso_seg_elem_t *tso_seg = tso_info->curr_seg;
struct msdu_ext_desc_t *msdu_ext_desc = (struct msdu_ext_desc_t *)desc;
word = (u_int32_t *)(desc);
/* Initialize the TSO flags per MSDU */
((struct msdu_ext_desc_t *)msdu_ext_desc)->tso_flags =
tso_seg->seg.tso_flags;
/* First 24 bytes (6*4) contain the TSO flags */
word += 6;
for (i = 0; i < tso_seg->seg.num_frags; i++) {
/* [31:0] first 32 bits of the buffer pointer */
*word = tso_seg->seg.tso_frags[i].paddr_low_32;
word++;
/* [15:0] the upper 16 bits of the first buffer pointer */
/* [31:16] length of the first buffer */
*word = (tso_seg->seg.tso_frags[i].length << 16);
word++;
}
if (tso_seg->seg.num_frags < FRAG_NUM_MAX) {
*word = 0;
word++;
*word = 0;
}
}
#endif /* FEATURE_TSO */
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