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coral / imx-board-wlan-src / 489533724b999c20603b1726758d0057a5badd4c / . / CORE / CLD_TXRX / HTT / htt_tx.c
blob: d70f10f8f9b8662bad0f93f04e305912f1202830 [file] [log] [blame]
/*
* Copyright (c) 2011, 2014, 2016-2017 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> /* u_int32_t, offsetof, etc. */
#include <adf_os_types.h> /* adf_os_dma_addr_t */
#include <adf_os_mem.h> /* adf_os_mem_alloc_consistent,free_consistent */
#include <adf_nbuf.h> /* adf_nbuf_t, etc. */
#include <adf_os_time.h> /* adf_os_mdelay */
#include <htt.h> /* htt_tx_msdu_desc_t */
#include <htc.h> /* HTC_HDR_LENGTH */
#include <htc_api.h> /* HTCFlushSurpriseRemove */
#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 <htt_internal.h>
#include "adf_trace.h"
#include <vos_utils.h>
#ifdef IPA_UC_OFFLOAD
/* 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 subtype | 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
#endif /* IPA_UC_OFFLOAD */
/*--- setup / tear-down functions -------------------------------------------*/
/**
* 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)
{
if (pdev->cfg.is_high_latency) {
pdev->tx_descs.size = sizeof(struct htt_host_tx_desc_t);
} else {
pdev->tx_descs.size =
/*
* Start with the size of the base struct
* that actually gets downloaded.
*/
sizeof(struct htt_host_tx_desc_t)
/*
* Add the fragmentation descriptor elements.
* Add the most that OS may deliver, plus one more in
* case the txrx code adds a prefix fragment (for TSO or
* audio interworking SNAP header)
*/
+ (ol_cfg_netbuf_frags_max(
pdev->ctrl_pdev)+1) * 8 /* 2x uint32_t */
+ 4; /* u_int32_t fragmentation list terminator */
}
}
#ifdef CONFIG_HL_SUPPORT
/**
* 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;
uint32_t num_link = 0;
uint16_t num_page, num_desc_per_page;
void **cacheable_pages = NULL;
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;
adf_os_mem_multi_pages_alloc(pdev->osdev, &pdev->tx_descs.desc_pages,
pdev->tx_descs.size,
pdev->tx_descs.pool_elems,
adf_os_get_dma_mem_context((&pdev->tx_descs),
memctx), true);
if ((0 == pdev->tx_descs.desc_pages.num_pages) ||
(NULL == pdev->tx_descs.desc_pages.cacheable_pages)) {
adf_os_print("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 */
cacheable_pages = pdev->tx_descs.desc_pages.cacheable_pages;
pdev->tx_descs.freelist = (uint32_t *)cacheable_pages[0];
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 point next page
*/
if (!cacheable_pages[i + 1]) {
adf_os_print("over flow num link %d\n",
num_link);
goto free_htt_desc;
}
*p = (uint32_t *)cacheable_pages[i + 1];
} 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;
adf_os_atomic_init(&pdev->htt_tx_credit.target_delta);
adf_os_atomic_init(&pdev->htt_tx_credit.bus_delta);
adf_os_atomic_add(HTT_MAX_BUS_CREDIT, &pdev->htt_tx_credit.bus_delta);
/* success */
return 0;
free_htt_desc:
adf_os_mem_multi_pages_free(pdev->osdev, &pdev->tx_descs.desc_pages,
adf_os_get_dma_mem_context((&pdev->tx_descs),
memctx), true);
out_fail:
return -ENOBUFS;
}
void htt_tx_detach(struct htt_pdev_t *pdev)
{
if (!pdev) {
adf_os_print("htt tx detach invalid instance");
return;
}
adf_os_mem_multi_pages_free(pdev->osdev, &pdev->tx_descs.desc_pages,
adf_os_get_dma_mem_context((&pdev->tx_descs),
memctx), true);
}
/**
* htt_tx_get_paddr() - get physical address for htt desc
* @pdev: htt pdev
* @target_vaddr: virtual address
*
* Get HTT descriptor physical address from virtaul address
* Find page first and find offset
* Not required for HL systems
*
* Return: Physical address of descriptor
*/
adf_os_dma_addr_t htt_tx_get_paddr(htt_pdev_handle pdev,
char *target_vaddr)
{
return 0;
}
#else
int htt_tx_attach(struct htt_pdev_t *pdev, int desc_pool_elems)
{
int i, i_int, pool_size;
uint32_t **p;
struct adf_os_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;
adf_os_mem_multi_pages_alloc(pdev->osdev, &pdev->tx_descs.desc_pages,
pdev->tx_descs.size, pdev->tx_descs.pool_elems,
adf_os_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)) {
adf_os_print("%s: HTT desc alloc fail", __func__);
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) {
adf_os_print("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;
/* success */
return 0;
free_htt_desc:
adf_os_mem_multi_pages_free(pdev->osdev, &pdev->tx_descs.desc_pages,
adf_os_get_dma_mem_context((&pdev->tx_descs), memctx), false);
out_fail:
return -ENOBUFS;
}
void htt_tx_detach(struct htt_pdev_t *pdev)
{
if (!pdev) {
adf_os_print("htt tx detach invalid instance");
return;
}
adf_os_mem_multi_pages_free(pdev->osdev, &pdev->tx_descs.desc_pages,
adf_os_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
*/
adf_os_dma_addr_t htt_tx_get_paddr(htt_pdev_handle pdev,
char *target_vaddr)
{
uint16_t i;
struct adf_os_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_info->page_v_addr_start) {
adf_os_print("invalid page_info");
adf_os_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) {
adf_os_print("invalid page_info");
adf_os_assert(0);
return 0;
}
offset = (uint64_t)(target_vaddr - page_info->page_v_addr_start);
return page_info->page_p_addr + offset;
}
#endif
/*--- descriptor allocation functions ---------------------------------------*/
void *
htt_tx_desc_alloc(htt_pdev_handle pdev, u_int32_t *paddr_lo)
{
struct htt_host_tx_desc_t *htt_host_tx_desc; /* includes HTC hdr space */
struct htt_tx_msdu_desc_t *htt_tx_desc; /* doesn't include HTC hdr */
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 = *((u_int32_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.
*/
if (!pdev->cfg.is_high_latency) {
u_int32_t *fragmentation_descr_field_ptr;
fragmentation_descr_field_ptr = (u_int32_t *)
((u_int32_t *) htt_tx_desc) +
HTT_TX_DESC_FRAGS_DESC_PADDR_OFFSET_DWORD;
/*
* The fragmentation descriptor is allocated from consistent mem.
* Therefore, we can use the address directly rather than having
* to map it from a virtual/CPU address to a physical/bus address.
*/
*fragmentation_descr_field_ptr =
(uint32_t)htt_tx_get_paddr(pdev, (char *)htt_tx_desc) +
HTT_TX_DESC_LEN;
}
/*
* 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);
*((u_int32_t **) htt_host_tx_desc) = pdev->tx_descs.freelist;
pdev->tx_descs.freelist = (u_int32_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,
u_int32_t paddr,
int reset)
{
u_int32_t *fragmentation_descr_field_ptr;
/* fragments table only applies to LL systems */
if (pdev->cfg.is_high_latency) {
return;
}
fragmentation_descr_field_ptr = (u_int32_t *)
((u_int32_t *) htt_tx_desc) + HTT_TX_DESC_FRAGS_DESC_PADDR_OFFSET_DWORD;
if (reset) {
*fragmentation_descr_field_ptr =
(uint32_t)htt_tx_get_paddr(pdev, (char *)htt_tx_desc) + HTT_TX_DESC_LEN;
} 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)
{
}
#if !defined(CONFIG_HL_SUPPORT)
void
htt_tx_pending_discard(htt_pdev_handle pdev)
{
HTCFlushSurpriseRemove(pdev->htc_pdev);
}
#endif
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)
{
adf_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 = adf_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;
}
not_accepted = HTCSendDataPkt(
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,
adf_nbuf_t msdu,
u_int16_t msdu_id)
{
int download_len = pdev->download_len;
int packet_len;
/* packet length includes HTT tx desc frag added above */
packet_len = adf_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;
}
NBUF_UPDATE_TX_PKT_COUNT(msdu, NBUF_TX_PKT_HTT);
DPTRACE(adf_dp_trace(msdu, ADF_DP_TRACE_HTT_PACKET_PTR_RECORD,
adf_nbuf_data_addr(msdu),
sizeof(adf_nbuf_data(msdu)), ADF_TX));
if (adf_nbuf_queue_len(&pdev->txnbufq) > 0) {
HTT_TX_NBUF_QUEUE_ADD(pdev, msdu);
htt_tx_sched(pdev);
return 0;
}
adf_nbuf_trace_update(msdu, "HT:T:");
if (HTCSendDataPkt(pdev->htc_pdev, msdu, pdev->htc_endpoint, download_len)){
HTT_TX_NBUF_QUEUE_ADD(pdev, msdu);
}
return 0; /* success */
}
adf_nbuf_t
htt_tx_send_batch(htt_pdev_handle pdev, adf_nbuf_t head_msdu, int num_msdus)
{
adf_os_print("*** %s curently only applies for HL systems\n", __func__);
adf_os_assert(0);
return head_msdu;
}
int
htt_tx_send_nonstd(
htt_pdev_handle pdev,
adf_nbuf_t msdu,
u_int16_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);
adf_os_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,
adf_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) &&
adf_nbuf_get_tx_parallel_dnload_frm(msdu) &&
(adf_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,
adf_nbuf_t msdu,
u_int16_t msdu_id,
int download_len,
u_int8_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 *)
adf_nbuf_get_frag_vaddr(msdu, 0);
pkt = htt_htc_pkt_alloc(pdev);
if (!pkt) {
return 1; /* failure */
}
pkt->msdu_id = msdu_id;
pkt->pdev_ctxt = pdev->txrx_pdev;
/* packet length includes HTT tx desc frag added above */
packet_len = adf_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);
adf_nbuf_trace_update(msdu, "HT:T:");
HTCSendDataPkt(pdev->htc_pdev, &pkt->htc_pkt, more_data);
return 0; /* success */
}
adf_nbuf_t
htt_tx_send_batch(
htt_pdev_handle pdev,
adf_nbuf_t head_msdu, int num_msdus)
{
adf_nbuf_t rejected = NULL;
u_int16_t *msdu_id_storage;
u_int16_t msdu_id;
adf_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--)
{
adf_nbuf_t next_msdu = adf_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)) {
adf_nbuf_set_next(msdu, rejected);
rejected = msdu;
}
msdu = next_msdu;
}
return rejected;
}
int
htt_tx_send_nonstd(
htt_pdev_handle pdev,
adf_nbuf_t msdu,
u_int16_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,
adf_nbuf_t msdu,
u_int16_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 */
adf_os_print("HTT tx desc (@ %pK):\n", htt_tx_desc);
adf_os_print(" msg type = %d\n", htt_tx_desc->msg_type);
adf_os_print(" pkt subtype = %d\n", htt_tx_desc->pkt_subtype);
adf_os_print(" pkt type = %d\n", htt_tx_desc->pkt_type);
adf_os_print(" vdev ID = %d\n", htt_tx_desc->vdev_id);
adf_os_print(" ext TID = %d\n", htt_tx_desc->ext_tid);
adf_os_print(" postponed = %d\n", htt_tx_desc->postponed);
adf_os_print(" batch more = %d\n", htt_tx_desc->more_in_batch);
adf_os_print(" length = %d\n", htt_tx_desc->len);
adf_os_print(" id = %d\n", htt_tx_desc->id);
adf_os_print(" frag desc addr = %#x\n", htt_tx_desc->frags_desc_ptr);
if (htt_tx_desc->frags_desc_ptr) {
int frag = 0;
u_int32_t *base;
u_int32_t addr;
u_int32_t len;
do {
base = ((u_int32_t *) htt_tx_desc->frags_desc_ptr) + (frag * 2);
addr = *base;
len = *(base + 1);
if (addr) {
adf_os_print(
" frag %d: addr = %#x, len = %d\n", frag, addr, len);
}
frag++;
} while (addr);
}
}
#endif
#ifdef IPA_UC_OFFLOAD
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)
{
unsigned int tx_buffer_count;
unsigned int tx_buffer_count_pwr2;
adf_nbuf_t buffer_vaddr;
u_int32_t buffer_paddr;
u_int32_t *header_ptr;
u_int32_t *ring_vaddr;
int return_code = 0;
uint16_t idx;
/* Allocate CE Write Index WORD */
pdev->ipa_uc_tx_rsc.tx_ce_idx.vaddr =
adf_os_mem_alloc_consistent(pdev->osdev,
4,
&pdev->ipa_uc_tx_rsc.tx_ce_idx.paddr,
adf_os_get_dma_mem_context(
(&pdev->ipa_uc_tx_rsc.tx_ce_idx), memctx));
if (!pdev->ipa_uc_tx_rsc.tx_ce_idx.vaddr) {
adf_os_print("%s: CE Write Index WORD alloc fail", __func__);
return -1;
}
/* Allocate TX COMP Ring */
pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr =
adf_os_mem_alloc_consistent(pdev->osdev,
uc_tx_buf_cnt * 4,
&pdev->ipa_uc_tx_rsc.tx_comp_base.paddr,
adf_os_get_dma_mem_context(
(&pdev->ipa_uc_tx_rsc.tx_comp_base), memctx));
if (!pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr) {
adf_os_print("%s: TX COMP ring alloc fail", __func__);
return_code = -2;
goto free_tx_ce_idx;
}
adf_os_mem_zero(pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr, uc_tx_buf_cnt * 4);
/* Allocate TX BUF vAddress Storage */
pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg =
(adf_nbuf_t *)adf_os_mem_alloc(pdev->osdev,
uc_tx_buf_cnt * sizeof(adf_nbuf_t));
if (!pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg) {
adf_os_print("%s: TX BUF POOL vaddr storage alloc fail",
__func__);
return_code = -3;
goto free_tx_comp_base;
}
adf_os_mem_zero(pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg,
uc_tx_buf_cnt * sizeof(adf_nbuf_t));
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 = adf_nbuf_alloc(pdev->osdev,
uc_tx_buf_sz, 0, 4, FALSE);
if (!buffer_vaddr)
{
adf_os_print("%s: TX BUF alloc fail, allocated buffer count %d",
__func__, tx_buffer_count);
break;
}
/* Init buffer */
adf_os_mem_zero(adf_nbuf_data(buffer_vaddr), uc_tx_buf_sz);
header_ptr = (u_int32_t *)adf_nbuf_data(buffer_vaddr);
*header_ptr = HTT_IPA_UC_OFFLOAD_TX_HEADER_DEFAULT;
header_ptr++;
*header_ptr |= ((u_int16_t)uc_tx_partition_base + tx_buffer_count) << 16;
adf_nbuf_map(pdev->osdev, buffer_vaddr, ADF_OS_DMA_BIDIRECTIONAL);
buffer_paddr = adf_nbuf_get_frag_paddr_lo(buffer_vaddr, 0);
header_ptr++;
*header_ptr = (u_int32_t)(buffer_paddr + 16);
header_ptr++;
*header_ptr = 0xFFFFFFFF;
/* FRAG Header */
header_ptr++;
*header_ptr = buffer_paddr + 32;
*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++;
}
/*
* Tx complete ring buffer count should be power of 2.
* So, allocated Tx buffer count should be one less than ring buffer size.
*/
tx_buffer_count_pwr2 = vos_rounddown_pow_of_two(tx_buffer_count + 1) - 1;
if (tx_buffer_count > tx_buffer_count_pwr2) {
adf_os_print("%s: Allocated Tx buffer count %d is rounded down to %d",
__func__, tx_buffer_count, tx_buffer_count_pwr2);
/* Free over allocated buffers below power of 2 */
for(idx = tx_buffer_count_pwr2; idx < tx_buffer_count; idx++) {
if (pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg[idx]) {
adf_nbuf_unmap(pdev->osdev,
pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg[idx],
ADF_OS_DMA_FROM_DEVICE);
adf_nbuf_free(pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg[idx]);
}
}
}
pdev->ipa_uc_tx_rsc.alloc_tx_buf_cnt = tx_buffer_count_pwr2;
return 0;
free_tx_comp_base:
adf_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,
adf_os_get_dma_mem_context(
(&pdev->ipa_uc_tx_rsc.tx_comp_base), memctx));
free_tx_ce_idx:
adf_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,
adf_os_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)
{
u_int16_t idx;
if (pdev->ipa_uc_tx_rsc.tx_ce_idx.vaddr) {
adf_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,
adf_os_get_dma_mem_context(
(&pdev->ipa_uc_tx_rsc.tx_ce_idx), memctx));
}
if (pdev->ipa_uc_tx_rsc.tx_comp_base.vaddr) {
adf_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,
adf_os_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]) {
adf_nbuf_unmap(pdev->osdev,
pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg[idx],
ADF_OS_DMA_FROM_DEVICE);
adf_nbuf_free(pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg[idx]);
}
}
/* Free storage */
adf_os_mem_free(pdev->ipa_uc_tx_rsc.tx_buf_pool_vaddr_strg);
return 0;
}
#endif /* IPA_UC_OFFLOAD */
int htt_tx_credit_update(struct htt_pdev_t *pdev)
{
int credit_delta;
credit_delta = MIN(adf_os_atomic_read(&pdev->htt_tx_credit.target_delta),
adf_os_atomic_read(&pdev->htt_tx_credit.bus_delta));
if (credit_delta) {
adf_os_atomic_add(-credit_delta, &pdev->htt_tx_credit.target_delta);
adf_os_atomic_add(-credit_delta, &pdev->htt_tx_credit.bus_delta);
}
return credit_delta;
}
#ifdef FEATURE_HL_GROUP_CREDIT_FLOW_CONTROL
void htt_tx_group_credit_process(struct htt_pdev_t *pdev, u_int32_t *msg_word)
{
int group_credit_sign;
int32_t group_credit;
u_int32_t group_credit_abs, vdev_id_mask, ac_mask;
u_int8_t group_abs, group_id;
u_int8_t group_offset = 0, more_group_present = 0;
more_group_present = HTT_TX_CREDIT_TXQ_GRP_GET(*msg_word);
while (more_group_present) {
/* Parse the Group Data */
group_id = HTT_TXQ_GROUP_ID_GET(*(msg_word+1+group_offset));
group_credit_abs =
HTT_TXQ_GROUP_CREDIT_COUNT_GET(*(msg_word+1+group_offset));
group_credit_sign =
HTT_TXQ_GROUP_SIGN_GET(*(msg_word+1+group_offset)) ? -1 : 1;
group_credit = group_credit_sign * group_credit_abs;
group_abs = HTT_TXQ_GROUP_ABS_GET(*(msg_word+1+group_offset));
vdev_id_mask =
HTT_TXQ_GROUP_VDEV_ID_MASK_GET(*(msg_word+2+group_offset));
ac_mask = HTT_TXQ_GROUP_AC_MASK_GET(*(msg_word+2+group_offset));
ol_txrx_update_tx_queue_groups(pdev->txrx_pdev, group_id,
group_credit, group_abs,
vdev_id_mask, ac_mask);
more_group_present = HTT_TXQ_GROUP_EXT_GET(*(msg_word+1+group_offset));
group_offset += HTT_TX_GROUP_INDEX_OFFSET;
}
OL_TX_UPDATE_GROUP_CREDIT_STATS(pdev->txrx_pdev);
}
#endif