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u-boot/arch/mips/mach-octeon/cvmx-helper-util.c
Aaron Williams 58cc84c128 mips: octeon: Add cvmx-helper-util.c 
Import cvmx-helper-util.c from 2013 U-Boot. It will be used by the later
added drivers to support PCIe and networking on the MIPS Octeon II / III
platforms.

Signed-off-by: Aaron Williams <awilliams@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
2021-04-23 21:03:24 +02:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2020 Marvell International Ltd.
*
* Small helper utilities.
*/
#include <log.h>
#include <time.h>
#include <linux/delay.h>
#include <mach/cvmx-regs.h>
#include <mach/cvmx-csr-enums.h>
#include <mach/octeon-model.h>
#include <mach/octeon-feature.h>
#include <mach/cvmx-gmxx-defs.h>
#include <mach/cvmx-ipd-defs.h>
#include <mach/cvmx-pko-defs.h>
#include <mach/cvmx-ipd.h>
#include <mach/cvmx-hwpko.h>
#include <mach/cvmx-pki.h>
#include <mach/cvmx-pip.h>
#include <mach/cvmx-helper.h>
#include <mach/cvmx-helper-util.h>
#include <mach/cvmx-helper-pki.h>
/**
* @INTERNAL
* These are the interface types needed to convert interface numbers to ipd
* ports.
*
* @param GMII
* This type is used for sgmii, rgmii, xaui and rxaui interfaces.
* @param ILK
* This type is used for ilk interfaces.
* @param SRIO
* This type is used for serial-RapidIo interfaces.
* @param NPI
* This type is used for npi interfaces.
* @param LB
* This type is used for loopback interfaces.
* @param INVALID_IF_TYPE
* This type indicates the interface hasn't been configured.
*/
enum port_map_if_type { INVALID_IF_TYPE = 0, GMII, ILK, SRIO, NPI, LB };
/**
* @INTERNAL
* This structure is used to map interface numbers to ipd ports.
*
* @param type
* Interface type
* @param first_ipd_port
* First IPD port number assigned to this interface.
* @param last_ipd_port
* Last IPD port number assigned to this interface.
* @param ipd_port_adj
* Different octeon chips require different ipd ports for the
* same interface port/mode configuration. This value is used
* to account for that difference.
*/
struct ipd_port_map {
enum port_map_if_type type;
int first_ipd_port;
int last_ipd_port;
int ipd_port_adj;
};
/**
* @INTERNAL
* Interface number to ipd port map for the octeon 68xx.
*/
static const struct ipd_port_map ipd_port_map_68xx[CVMX_HELPER_MAX_IFACE] = {
{ GMII, 0x800, 0x8ff, 0x40 }, /* Interface 0 */
{ GMII, 0x900, 0x9ff, 0x40 }, /* Interface 1 */
{ GMII, 0xa00, 0xaff, 0x40 }, /* Interface 2 */
{ GMII, 0xb00, 0xbff, 0x40 }, /* Interface 3 */
{ GMII, 0xc00, 0xcff, 0x40 }, /* Interface 4 */
{ ILK, 0x400, 0x4ff, 0x00 }, /* Interface 5 */
{ ILK, 0x500, 0x5ff, 0x00 }, /* Interface 6 */
{ NPI, 0x100, 0x120, 0x00 }, /* Interface 7 */
{ LB, 0x000, 0x008, 0x00 }, /* Interface 8 */
};
/**
* @INTERNAL
* Interface number to ipd port map for the octeon 78xx.
*
* This mapping corresponds to WQE(CHAN) enumeration in
* HRM Sections 11.15, PKI_CHAN_E, Section 11.6
*
*/
static const struct ipd_port_map ipd_port_map_78xx[CVMX_HELPER_MAX_IFACE] = {
{ GMII, 0x800, 0x83f, 0x00 }, /* Interface 0 - BGX0 */
{ GMII, 0x900, 0x93f, 0x00 }, /* Interface 1 -BGX1 */
{ GMII, 0xa00, 0xa3f, 0x00 }, /* Interface 2 -BGX2 */
{ GMII, 0xb00, 0xb3f, 0x00 }, /* Interface 3 - BGX3 */
{ GMII, 0xc00, 0xc3f, 0x00 }, /* Interface 4 - BGX4 */
{ GMII, 0xd00, 0xd3f, 0x00 }, /* Interface 5 - BGX5 */
{ ILK, 0x400, 0x4ff, 0x00 }, /* Interface 6 - ILK0 */
{ ILK, 0x500, 0x5ff, 0x00 }, /* Interface 7 - ILK1 */
{ NPI, 0x100, 0x13f, 0x00 }, /* Interface 8 - DPI */
{ LB, 0x000, 0x03f, 0x00 }, /* Interface 9 - LOOPBACK */
};
/**
* @INTERNAL
* Interface number to ipd port map for the octeon 73xx.
*/
static const struct ipd_port_map ipd_port_map_73xx[CVMX_HELPER_MAX_IFACE] = {
{ GMII, 0x800, 0x83f, 0x00 }, /* Interface 0 - BGX(0,0-3) */
{ GMII, 0x900, 0x93f, 0x00 }, /* Interface 1 -BGX(1,0-3) */
{ GMII, 0xa00, 0xa3f, 0x00 }, /* Interface 2 -BGX(2,0-3) */
{ NPI, 0x100, 0x17f, 0x00 }, /* Interface 3 - DPI */
{ LB, 0x000, 0x03f, 0x00 }, /* Interface 4 - LOOPBACK */
};
/**
* @INTERNAL
* Interface number to ipd port map for the octeon 75xx.
*/
static const struct ipd_port_map ipd_port_map_75xx[CVMX_HELPER_MAX_IFACE] = {
{ GMII, 0x800, 0x83f, 0x00 }, /* Interface 0 - BGX0 */
{ SRIO, 0x240, 0x241, 0x00 }, /* Interface 1 - SRIO 0 */
{ SRIO, 0x242, 0x243, 0x00 }, /* Interface 2 - SRIO 1 */
{ NPI, 0x100, 0x13f, 0x00 }, /* Interface 3 - DPI */
{ LB, 0x000, 0x03f, 0x00 }, /* Interface 4 - LOOPBACK */
};
/**
* Convert a interface mode into a human readable string
*
* @param mode Mode to convert
*
* @return String
*/
const char *cvmx_helper_interface_mode_to_string(cvmx_helper_interface_mode_t mode)
{
switch (mode) {
case CVMX_HELPER_INTERFACE_MODE_DISABLED:
return "DISABLED";
case CVMX_HELPER_INTERFACE_MODE_RGMII:
return "RGMII";
case CVMX_HELPER_INTERFACE_MODE_GMII:
return "GMII";
case CVMX_HELPER_INTERFACE_MODE_SPI:
return "SPI";
case CVMX_HELPER_INTERFACE_MODE_PCIE:
return "PCIE";
case CVMX_HELPER_INTERFACE_MODE_XAUI:
return "XAUI";
case CVMX_HELPER_INTERFACE_MODE_RXAUI:
return "RXAUI";
case CVMX_HELPER_INTERFACE_MODE_SGMII:
return "SGMII";
case CVMX_HELPER_INTERFACE_MODE_QSGMII:
return "QSGMII";
case CVMX_HELPER_INTERFACE_MODE_PICMG:
return "PICMG";
case CVMX_HELPER_INTERFACE_MODE_NPI:
return "NPI";
case CVMX_HELPER_INTERFACE_MODE_LOOP:
return "LOOP";
case CVMX_HELPER_INTERFACE_MODE_SRIO:
return "SRIO";
case CVMX_HELPER_INTERFACE_MODE_ILK:
return "ILK";
case CVMX_HELPER_INTERFACE_MODE_AGL:
return "AGL";
case CVMX_HELPER_INTERFACE_MODE_XLAUI:
return "XLAUI";
case CVMX_HELPER_INTERFACE_MODE_XFI:
return "XFI";
case CVMX_HELPER_INTERFACE_MODE_40G_KR4:
return "40G_KR4";
case CVMX_HELPER_INTERFACE_MODE_10G_KR:
return "10G_KR";
case CVMX_HELPER_INTERFACE_MODE_MIXED:
return "MIXED";
}
return "UNKNOWN";
}
/**
* Debug routine to dump the packet structure to the console
*
* @param work Work queue entry containing the packet to dump
* @return
*/
int cvmx_helper_dump_packet(cvmx_wqe_t *work)
{
u64 count;
u64 remaining_bytes;
union cvmx_buf_ptr buffer_ptr;
cvmx_buf_ptr_pki_t bptr;
cvmx_wqe_78xx_t *wqe = (void *)work;
u64 start_of_buffer;
u8 *data_address;
u8 *end_of_data;
if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE)) {
cvmx_pki_dump_wqe(wqe);
cvmx_wqe_pki_errata_20776(work);
} else {
debug("WORD0 = %lx\n", (unsigned long)work->word0.u64);
debug("WORD1 = %lx\n", (unsigned long)work->word1.u64);
debug("WORD2 = %lx\n", (unsigned long)work->word2.u64);
debug("Packet Length: %u\n", cvmx_wqe_get_len(work));
debug(" Input Port: %u\n", cvmx_wqe_get_port(work));
debug(" QoS: %u\n", cvmx_wqe_get_qos(work));
debug(" Buffers: %u\n", cvmx_wqe_get_bufs(work));
}
if (cvmx_wqe_get_bufs(work) == 0) {
int wqe_pool;
if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE)) {
debug("%s: ERROR: Unexpected bufs==0 in WQE\n", __func__);
return -1;
}
wqe_pool = (int)cvmx_fpa_get_wqe_pool();
buffer_ptr.u64 = 0;
buffer_ptr.s.pool = wqe_pool;
buffer_ptr.s.size = 128;
buffer_ptr.s.addr = cvmx_ptr_to_phys(work->packet_data);
if (cvmx_likely(!work->word2.s.not_IP)) {
union cvmx_pip_ip_offset pip_ip_offset;
pip_ip_offset.u64 = csr_rd(CVMX_PIP_IP_OFFSET);
buffer_ptr.s.addr +=
(pip_ip_offset.s.offset << 3) - work->word2.s.ip_offset;
buffer_ptr.s.addr += (work->word2.s.is_v6 ^ 1) << 2;
} else {
/*
* WARNING: This code assume that the packet
* is not RAW. If it was, we would use
* PIP_GBL_CFG[RAW_SHF] instead of
* PIP_GBL_CFG[NIP_SHF].
*/
union cvmx_pip_gbl_cfg pip_gbl_cfg;
pip_gbl_cfg.u64 = csr_rd(CVMX_PIP_GBL_CFG);
buffer_ptr.s.addr += pip_gbl_cfg.s.nip_shf;
}
} else {
buffer_ptr = work->packet_ptr;
}
remaining_bytes = cvmx_wqe_get_len(work);
while (remaining_bytes) {
/* native cn78xx buffer format, unless legacy-translated */
if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE) && !wqe->pki_wqe_translated) {
bptr.u64 = buffer_ptr.u64;
/* XXX- assumes cache-line aligned buffer */
start_of_buffer = (bptr.addr >> 7) << 7;
debug(" Buffer Start:%llx\n", (unsigned long long)start_of_buffer);
debug(" Buffer Data: %llx\n", (unsigned long long)bptr.addr);
debug(" Buffer Size: %u\n", bptr.size);
data_address = (uint8_t *)cvmx_phys_to_ptr(bptr.addr);
end_of_data = data_address + bptr.size;
} else {
start_of_buffer = ((buffer_ptr.s.addr >> 7) - buffer_ptr.s.back) << 7;
debug(" Buffer Start:%llx\n", (unsigned long long)start_of_buffer);
debug(" Buffer I : %u\n", buffer_ptr.s.i);
debug(" Buffer Back: %u\n", buffer_ptr.s.back);
debug(" Buffer Pool: %u\n", buffer_ptr.s.pool);
debug(" Buffer Data: %llx\n", (unsigned long long)buffer_ptr.s.addr);
debug(" Buffer Size: %u\n", buffer_ptr.s.size);
data_address = (uint8_t *)cvmx_phys_to_ptr(buffer_ptr.s.addr);
end_of_data = data_address + buffer_ptr.s.size;
}
debug("\t\t");
count = 0;
while (data_address < end_of_data) {
if (remaining_bytes == 0)
break;
remaining_bytes--;
debug("%02x", (unsigned int)*data_address);
data_address++;
if (remaining_bytes && count == 7) {
debug("\n\t\t");
count = 0;
} else {
count++;
}
}
debug("\n");
if (remaining_bytes) {
if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE) &&
!wqe->pki_wqe_translated)
buffer_ptr.u64 = *(uint64_t *)cvmx_phys_to_ptr(bptr.addr - 8);
else
buffer_ptr.u64 =
*(uint64_t *)cvmx_phys_to_ptr(buffer_ptr.s.addr - 8);
}
}
return 0;
}
/**
* @INTERNAL
*
* Extract NO_WPTR mode from PIP/IPD register
*/
static int __cvmx_ipd_mode_no_wptr(void)
{
if (octeon_has_feature(OCTEON_FEATURE_NO_WPTR)) {
cvmx_ipd_ctl_status_t ipd_ctl_status;
ipd_ctl_status.u64 = csr_rd(CVMX_IPD_CTL_STATUS);
return ipd_ctl_status.s.no_wptr;
}
return 0;
}
static cvmx_buf_ptr_t __cvmx_packet_short_ptr[4];
static int8_t __cvmx_wqe_pool = -1;
/**
* @INTERNAL
* Prepare packet pointer templace for dynamic short
* packets.
*/
static void cvmx_packet_short_ptr_calculate(void)
{
unsigned int i, off;
union cvmx_pip_gbl_cfg pip_gbl_cfg;
union cvmx_pip_ip_offset pip_ip_offset;
/* Fill in the common values for all cases */
for (i = 0; i < 4; i++) {
if (__cvmx_ipd_mode_no_wptr())
/* packet pool, set to 0 in hardware */
__cvmx_wqe_pool = 0;
else
/* WQE pool as configured */
__cvmx_wqe_pool = csr_rd(CVMX_IPD_WQE_FPA_QUEUE) & 7;
__cvmx_packet_short_ptr[i].s.pool = __cvmx_wqe_pool;
__cvmx_packet_short_ptr[i].s.size = cvmx_fpa_get_block_size(__cvmx_wqe_pool);
__cvmx_packet_short_ptr[i].s.size -= 32;
__cvmx_packet_short_ptr[i].s.addr = 32;
}
pip_gbl_cfg.u64 = csr_rd(CVMX_PIP_GBL_CFG);
pip_ip_offset.u64 = csr_rd(CVMX_PIP_IP_OFFSET);
/* RAW_FULL: index = 0 */
i = 0;
off = pip_gbl_cfg.s.raw_shf;
__cvmx_packet_short_ptr[i].s.addr += off;
__cvmx_packet_short_ptr[i].s.size -= off;
__cvmx_packet_short_ptr[i].s.back += off >> 7;
/* NON-IP: index = 1 */
i = 1;
off = pip_gbl_cfg.s.nip_shf;
__cvmx_packet_short_ptr[i].s.addr += off;
__cvmx_packet_short_ptr[i].s.size -= off;
__cvmx_packet_short_ptr[i].s.back += off >> 7;
/* IPv4: index = 2 */
i = 2;
off = (pip_ip_offset.s.offset << 3) + 4;
__cvmx_packet_short_ptr[i].s.addr += off;
__cvmx_packet_short_ptr[i].s.size -= off;
__cvmx_packet_short_ptr[i].s.back += off >> 7;
/* IPv6: index = 3 */
i = 3;
off = (pip_ip_offset.s.offset << 3) + 0;
__cvmx_packet_short_ptr[i].s.addr += off;
__cvmx_packet_short_ptr[i].s.size -= off;
__cvmx_packet_short_ptr[i].s.back += off >> 7;
/* For IPv4/IPv6: subtract work->word2.s.ip_offset
* to addr, if it is smaller than IP_OFFSET[OFFSET]*8
* which is stored in __cvmx_packet_short_ptr[3].s.addr
*/
}
/**
* Extract packet data buffer pointer from work queue entry.
*
* Returns the legacy (Octeon1/Octeon2) buffer pointer structure
* for the linked buffer list.
* On CN78XX, the native buffer pointer structure is converted into
* the legacy format.
* The legacy buf_ptr is then stored in the WQE, and word0 reserved
* field is set to indicate that the buffer pointers were translated.
* If the packet data is only found inside the work queue entry,
* a standard buffer pointer structure is created for it.
*/
cvmx_buf_ptr_t cvmx_wqe_get_packet_ptr(cvmx_wqe_t *work)
{
if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE)) {
cvmx_wqe_78xx_t *wqe = (void *)work;
cvmx_buf_ptr_t optr, lptr;
cvmx_buf_ptr_pki_t nptr;
unsigned int pool, bufs;
int node = cvmx_get_node_num();
/* In case of repeated calls of this function */
if (wqe->pki_wqe_translated || wqe->word2.software) {
optr.u64 = wqe->packet_ptr.u64;
return optr;
}
bufs = wqe->word0.bufs;
pool = wqe->word0.aura;
nptr.u64 = wqe->packet_ptr.u64;
optr.u64 = 0;
optr.s.pool = pool;
optr.s.addr = nptr.addr;
if (bufs == 1) {
optr.s.size = pki_dflt_pool[node].buffer_size -
pki_dflt_style[node].parm_cfg.first_skip - 8 -
wqe->word0.apad;
} else {
optr.s.size = nptr.size;
}
/* Calculate the "back" offset */
if (!nptr.packet_outside_wqe) {
optr.s.back = (nptr.addr -
cvmx_ptr_to_phys(wqe)) >> 7;
} else {
optr.s.back =
(pki_dflt_style[node].parm_cfg.first_skip +
8 + wqe->word0.apad) >> 7;
}
lptr = optr;
/* Follow pointer and convert all linked pointers */
while (bufs > 1) {
void *vptr;
vptr = cvmx_phys_to_ptr(lptr.s.addr);
memcpy(&nptr, vptr - 8, 8);
/*
* Errata (PKI-20776) PKI_BUFLINK_S's are endian-swapped
* CN78XX pass 1.x has a bug where the packet pointer
* in each segment is written in the opposite
* endianness of the configured mode. Fix these here
*/
if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X))
nptr.u64 = __builtin_bswap64(nptr.u64);
lptr.u64 = 0;
lptr.s.pool = pool;
lptr.s.addr = nptr.addr;
lptr.s.size = nptr.size;
lptr.s.back = (pki_dflt_style[0].parm_cfg.later_skip + 8) >>
7; /* TBD: not guaranteed !! */
memcpy(vptr - 8, &lptr, 8);
bufs--;
}
/* Store translated bufptr in WQE, and set indicator */
wqe->pki_wqe_translated = 1;
wqe->packet_ptr.u64 = optr.u64;
return optr;
} else {
unsigned int i;
unsigned int off = 0;
cvmx_buf_ptr_t bptr;
if (cvmx_likely(work->word2.s.bufs > 0))
return work->packet_ptr;
if (cvmx_unlikely(work->word2.s.software))
return work->packet_ptr;
/* first packet, precalculate packet_ptr templaces */
if (cvmx_unlikely(__cvmx_packet_short_ptr[0].u64 == 0))
cvmx_packet_short_ptr_calculate();
/* calculate templace index */
i = work->word2.s_cn38xx.not_IP | work->word2.s_cn38xx.rcv_error;
i = 2 ^ (i << 1);
/* IPv4/IPv6: Adjust IP offset */
if (cvmx_likely(i & 2)) {
i |= work->word2.s.is_v6;
off = work->word2.s.ip_offset;
} else {
/* RAWFULL/RAWSCHED should be handled here */
i = 1; /* not-IP */
off = 0;
}
/* Get the right templace */
bptr = __cvmx_packet_short_ptr[i];
bptr.s.addr -= off;
bptr.s.back = bptr.s.addr >> 7;
/* Add actual WQE paddr to the templace offset */
bptr.s.addr += cvmx_ptr_to_phys(work);
/* Adjust word2.bufs so that _free_data() handles it
* in the same way as PKO
*/
work->word2.s.bufs = 1;
/* Store the new buffer pointer back into WQE */
work->packet_ptr = bptr;
/* Returned the synthetic buffer_pointer */
return bptr;
}
}
void cvmx_wqe_free(cvmx_wqe_t *work)
{
unsigned int bufs, ncl = 1;
u64 paddr, paddr1;
if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE)) {
cvmx_wqe_78xx_t *wqe = (void *)work;
cvmx_fpa3_gaura_t aura;
cvmx_buf_ptr_pki_t bptr;
bufs = wqe->word0.bufs;
if (!wqe->pki_wqe_translated && bufs != 0) {
/* Handle cn78xx native untralsated WQE */
bptr = wqe->packet_ptr;
/* Do nothing - first packet buffer shares WQE buffer */
if (!bptr.packet_outside_wqe)
return;
} else if (cvmx_likely(bufs != 0)) {
/* Handle translated 78XX WQE */
paddr = (work->packet_ptr.s.addr & (~0x7full)) -
(work->packet_ptr.s.back << 7);
paddr1 = cvmx_ptr_to_phys(work);
/* do not free WQE if contains first data buffer */
if (paddr == paddr1)
return;
}
/* WQE is separate from packet buffer, free it */
aura = __cvmx_fpa3_gaura(wqe->word0.aura >> 10, wqe->word0.aura & 0x3ff);
cvmx_fpa3_free(work, aura, ncl);
} else {
/* handle legacy WQE */
bufs = work->word2.s_cn38xx.bufs;
if (cvmx_likely(bufs != 0)) {
/* Check if the first data buffer is inside WQE */
paddr = (work->packet_ptr.s.addr & (~0x7full)) -
(work->packet_ptr.s.back << 7);
paddr1 = cvmx_ptr_to_phys(work);
/* do not free WQE if contains first data buffer */
if (paddr == paddr1)
return;
}
/* precalculate packet_ptr, WQE pool number */
if (cvmx_unlikely(__cvmx_wqe_pool < 0))
cvmx_packet_short_ptr_calculate();
cvmx_fpa1_free(work, __cvmx_wqe_pool, ncl);
}
}
/**
* Free the packet buffers contained in a work queue entry.
* The work queue entry is also freed if it contains packet data.
* If however the packet starts outside the WQE, the WQE will
* not be freed. The application should call cvmx_wqe_free()
* to free the WQE buffer that contains no packet data.
*
* @param work Work queue entry with packet to free
*/
void cvmx_helper_free_packet_data(cvmx_wqe_t *work)
{
u64 number_buffers;
u64 start_of_buffer;
u64 next_buffer_ptr;
cvmx_fpa3_gaura_t aura;
unsigned int ncl;
cvmx_buf_ptr_t buffer_ptr;
cvmx_buf_ptr_pki_t bptr;
cvmx_wqe_78xx_t *wqe = (void *)work;
int o3_pki_wqe = 0;
number_buffers = cvmx_wqe_get_bufs(work);
buffer_ptr.u64 = work->packet_ptr.u64;
/* Zero-out WQE WORD3 so that the WQE is freed by cvmx_wqe_free() */
work->packet_ptr.u64 = 0;
if (number_buffers == 0)
return;
/* Interpret PKI-style bufptr unless it has been translated */
if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE) &&
!wqe->pki_wqe_translated) {
o3_pki_wqe = 1;
cvmx_wqe_pki_errata_20776(work);
aura = __cvmx_fpa3_gaura(wqe->word0.aura >> 10,
wqe->word0.aura & 0x3ff);
} else {
start_of_buffer = ((buffer_ptr.s.addr >> 7) -
buffer_ptr.s.back) << 7;
next_buffer_ptr =
*(uint64_t *)cvmx_phys_to_ptr(buffer_ptr.s.addr - 8);
/*
* Since the number of buffers is not zero, we know this is not
* a dynamic short packet. We need to check if it is a packet
* received with IPD_CTL_STATUS[NO_WPTR]. If this is true,
* we need to free all buffers except for the first one.
* The caller doesn't expect their WQE pointer to be freed
*/
if (cvmx_ptr_to_phys(work) == start_of_buffer) {
buffer_ptr.u64 = next_buffer_ptr;
number_buffers--;
}
}
while (number_buffers--) {
if (o3_pki_wqe) {
bptr.u64 = buffer_ptr.u64;
ncl = (bptr.size + CVMX_CACHE_LINE_SIZE - 1) /
CVMX_CACHE_LINE_SIZE;
/* XXX- assumes the buffer is cache-line aligned */
start_of_buffer = (bptr.addr >> 7) << 7;
/*
* Read pointer to next buffer before we free the
* current buffer.
*/
next_buffer_ptr = *(uint64_t *)cvmx_phys_to_ptr(bptr.addr - 8);
/* FPA AURA comes from WQE, includes node */
cvmx_fpa3_free(cvmx_phys_to_ptr(start_of_buffer),
aura, ncl);
} else {
ncl = (buffer_ptr.s.size + CVMX_CACHE_LINE_SIZE - 1) /
CVMX_CACHE_LINE_SIZE +
buffer_ptr.s.back;
/*
* Calculate buffer start using "back" offset,
* Remember the back pointer is in cache lines,
* not 64bit words
*/
start_of_buffer = ((buffer_ptr.s.addr >> 7) -
buffer_ptr.s.back) << 7;
/*
* Read pointer to next buffer before we free
* the current buffer.
*/
next_buffer_ptr =
*(uint64_t *)cvmx_phys_to_ptr(buffer_ptr.s.addr - 8);
/* FPA pool comes from buf_ptr itself */
if (octeon_has_feature(OCTEON_FEATURE_CN78XX_WQE)) {
aura = cvmx_fpa1_pool_to_fpa3_aura(buffer_ptr.s.pool);
cvmx_fpa3_free(cvmx_phys_to_ptr(start_of_buffer),
aura, ncl);
} else {
cvmx_fpa1_free(cvmx_phys_to_ptr(start_of_buffer),
buffer_ptr.s.pool, ncl);
}
}
buffer_ptr.u64 = next_buffer_ptr;
}
}
void cvmx_helper_setup_legacy_red(int pass_thresh, int drop_thresh)
{
unsigned int node = cvmx_get_node_num();
int aura, bpid;
int buf_cnt;
bool ena_red = 0, ena_drop = 0, ena_bp = 0;
#define FPA_RED_AVG_DLY 1
#define FPA_RED_LVL_DLY 3
#define FPA_QOS_AVRG 0
/* Trying to make it backward compatible with older chips */
/* Setting up avg_dly and prb_dly, enable bits */
if (octeon_has_feature(OCTEON_FEATURE_FPA3)) {
cvmx_fpa3_config_red_params(node, FPA_QOS_AVRG,
FPA_RED_LVL_DLY, FPA_RED_AVG_DLY);
}
/* Disable backpressure on queued buffers which is aura in 78xx*/
/*
* Assumption is that all packets from all interface and ports goes
* in same poolx/aurax for backward compatibility
*/
aura = cvmx_fpa_get_packet_pool();
buf_cnt = cvmx_fpa_get_packet_pool_buffer_count();
pass_thresh = buf_cnt - pass_thresh;
drop_thresh = buf_cnt - drop_thresh;
/* Map aura to bpid 0*/
bpid = 0;
cvmx_pki_write_aura_bpid(node, aura, bpid);
/* Don't enable back pressure */
ena_bp = 0;
/* enable RED */
ena_red = 1;
/*
* This will enable RED on all interfaces since
* they all have packet buffer coming from same aura
*/
cvmx_helper_setup_aura_qos(node, aura, ena_red, ena_drop, pass_thresh,
drop_thresh, ena_bp, 0);
}
/**
* Setup Random Early Drop to automatically begin dropping packets.
*
* @param pass_thresh
* Packets will begin slowly dropping when there are less than
* this many packet buffers free in FPA 0.
* @param drop_thresh
* All incoming packets will be dropped when there are less
* than this many free packet buffers in FPA 0.
* @return Zero on success. Negative on failure
*/
int cvmx_helper_setup_red(int pass_thresh, int drop_thresh)
{
if (octeon_has_feature(OCTEON_FEATURE_PKI))
cvmx_helper_setup_legacy_red(pass_thresh, drop_thresh);
else
cvmx_ipd_setup_red(pass_thresh, drop_thresh);
return 0;
}
/**
* @INTERNAL
* Setup the common GMX settings that determine the number of
* ports. These setting apply to almost all configurations of all
* chips.
*
* @param xiface Interface to configure
* @param num_ports Number of ports on the interface
*
* @return Zero on success, negative on failure
*/
int __cvmx_helper_setup_gmx(int xiface, int num_ports)
{
union cvmx_gmxx_tx_prts gmx_tx_prts;
union cvmx_gmxx_rx_prts gmx_rx_prts;
union cvmx_pko_reg_gmx_port_mode pko_mode;
union cvmx_gmxx_txx_thresh gmx_tx_thresh;
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
int index;
/*
* The common BGX settings are already done in the appropriate
* enable functions, nothing to do here.
*/
if (octeon_has_feature(OCTEON_FEATURE_BGX))
return 0;
/* Tell GMX the number of TX ports on this interface */
gmx_tx_prts.u64 = csr_rd(CVMX_GMXX_TX_PRTS(xi.interface));
gmx_tx_prts.s.prts = num_ports;
csr_wr(CVMX_GMXX_TX_PRTS(xi.interface), gmx_tx_prts.u64);
/*
* Tell GMX the number of RX ports on this interface. This only applies
* to *GMII and XAUI ports.
*/
switch (cvmx_helper_interface_get_mode(xiface)) {
case CVMX_HELPER_INTERFACE_MODE_RGMII:
case CVMX_HELPER_INTERFACE_MODE_SGMII:
case CVMX_HELPER_INTERFACE_MODE_QSGMII:
case CVMX_HELPER_INTERFACE_MODE_GMII:
case CVMX_HELPER_INTERFACE_MODE_XAUI:
case CVMX_HELPER_INTERFACE_MODE_RXAUI:
if (num_ports > 4) {
debug("%s: Illegal num_ports\n", __func__);
return -1;
}
gmx_rx_prts.u64 = csr_rd(CVMX_GMXX_RX_PRTS(xi.interface));
gmx_rx_prts.s.prts = num_ports;
csr_wr(CVMX_GMXX_RX_PRTS(xi.interface), gmx_rx_prts.u64);
break;
default:
break;
}
/*
* Skip setting CVMX_PKO_REG_GMX_PORT_MODE on 30XX, 31XX, 50XX,
* and 68XX.
*/
if (!OCTEON_IS_MODEL(OCTEON_CN68XX)) {
/* Tell PKO the number of ports on this interface */
pko_mode.u64 = csr_rd(CVMX_PKO_REG_GMX_PORT_MODE);
if (xi.interface == 0) {
if (num_ports == 1)
pko_mode.s.mode0 = 4;
else if (num_ports == 2)
pko_mode.s.mode0 = 3;
else if (num_ports <= 4)
pko_mode.s.mode0 = 2;
else if (num_ports <= 8)
pko_mode.s.mode0 = 1;
else
pko_mode.s.mode0 = 0;
} else {
if (num_ports == 1)
pko_mode.s.mode1 = 4;
else if (num_ports == 2)
pko_mode.s.mode1 = 3;
else if (num_ports <= 4)
pko_mode.s.mode1 = 2;
else if (num_ports <= 8)
pko_mode.s.mode1 = 1;
else
pko_mode.s.mode1 = 0;
}
csr_wr(CVMX_PKO_REG_GMX_PORT_MODE, pko_mode.u64);
}
/*
* Set GMX to buffer as much data as possible before starting
* transmit. This reduces the chances that we have a TX under run
* due to memory contention. Any packet that fits entirely in the
* GMX FIFO can never have an under run regardless of memory load.
*/
gmx_tx_thresh.u64 = csr_rd(CVMX_GMXX_TXX_THRESH(0, xi.interface));
/* ccn - common cnt numberator */
int ccn = 0x100;
/* Choose the max value for the number of ports */
if (num_ports <= 1)
gmx_tx_thresh.s.cnt = ccn / 1;
else if (num_ports == 2)
gmx_tx_thresh.s.cnt = ccn / 2;
else
gmx_tx_thresh.s.cnt = ccn / 4;
/*
* SPI and XAUI can have lots of ports but the GMX hardware
* only ever has a max of 4
*/
if (num_ports > 4)
num_ports = 4;
for (index = 0; index < num_ports; index++)
csr_wr(CVMX_GMXX_TXX_THRESH(index, xi.interface), gmx_tx_thresh.u64);
/*
* For o68, we need to setup the pipes
*/
if (OCTEON_IS_MODEL(OCTEON_CN68XX) && xi.interface < CVMX_HELPER_MAX_GMX) {
union cvmx_gmxx_txx_pipe config;
for (index = 0; index < num_ports; index++) {
config.u64 = 0;
if (__cvmx_helper_cfg_pko_port_base(xiface, index) >= 0) {
config.u64 = csr_rd(CVMX_GMXX_TXX_PIPE(index,
xi.interface));
config.s.nump = __cvmx_helper_cfg_pko_port_num(xiface,
index);
config.s.base = __cvmx_helper_cfg_pko_port_base(xiface,
index);
csr_wr(CVMX_GMXX_TXX_PIPE(index, xi.interface),
config.u64);
}
}
}
return 0;
}
int cvmx_helper_get_pko_port(int interface, int port)
{
return cvmx_pko_get_base_pko_port(interface, port);
}
int cvmx_helper_get_ipd_port(int xiface, int index)
{
struct cvmx_xiface xi = cvmx_helper_xiface_to_node_interface(xiface);
if (octeon_has_feature(OCTEON_FEATURE_PKND)) {
const struct ipd_port_map *port_map;
int ipd_port;
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
port_map = ipd_port_map_68xx;
ipd_port = 0;
} else if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
port_map = ipd_port_map_78xx;
ipd_port = cvmx_helper_node_to_ipd_port(xi.node, 0);
} else if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
port_map = ipd_port_map_73xx;
ipd_port = 0;
} else if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
port_map = ipd_port_map_75xx;
ipd_port = 0;
} else {
return -1;
}
ipd_port += port_map[xi.interface].first_ipd_port;
if (port_map[xi.interface].type == GMII) {
cvmx_helper_interface_mode_t mode;
mode = cvmx_helper_interface_get_mode(xiface);
if (mode == CVMX_HELPER_INTERFACE_MODE_XAUI ||
(mode == CVMX_HELPER_INTERFACE_MODE_RXAUI &&
OCTEON_IS_MODEL(OCTEON_CN68XX))) {
ipd_port += port_map[xi.interface].ipd_port_adj;
return ipd_port;
} else {
return ipd_port + (index * 16);
}
} else if (port_map[xi.interface].type == ILK) {
return ipd_port + index;
} else if (port_map[xi.interface].type == NPI) {
return ipd_port + index;
} else if (port_map[xi.interface].type == SRIO) {
return ipd_port + index;
} else if (port_map[xi.interface].type == LB) {
return ipd_port + index;
}
debug("ERROR: %s: interface %u:%u bad mode\n",
__func__, xi.node, xi.interface);
return -1;
} else if (cvmx_helper_interface_get_mode(xiface) ==
CVMX_HELPER_INTERFACE_MODE_AGL) {
return 24;
}
switch (xi.interface) {
case 0:
return index;
case 1:
return index + 16;
case 2:
return index + 32;
case 3:
return index + 36;
case 4:
return index + 40;
case 5:
return index + 42;
case 6:
return index + 44;
case 7:
return index + 46;
}
return -1;
}
int cvmx_helper_get_pknd(int xiface, int index)
{
if (octeon_has_feature(OCTEON_FEATURE_PKND))
return __cvmx_helper_cfg_pknd(xiface, index);
return CVMX_INVALID_PKND;
}
int cvmx_helper_get_bpid(int interface, int port)
{
if (octeon_has_feature(OCTEON_FEATURE_PKND))
return __cvmx_helper_cfg_bpid(interface, port);
return CVMX_INVALID_BPID;
}
/**
* Display interface statistics.
*
* @param port IPD/PKO port number
*
* @return none
*/
void cvmx_helper_show_stats(int port)
{
cvmx_pip_port_status_t status;
cvmx_pko_port_status_t pko_status;
/* ILK stats */
if (octeon_has_feature(OCTEON_FEATURE_ILK))
__cvmx_helper_ilk_show_stats();
/* PIP stats */
cvmx_pip_get_port_stats(port, 0, &status);
debug("port %d: the number of packets - ipd: %d\n", port,
(int)status.packets);
/* PKO stats */
cvmx_pko_get_port_status(port, 0, &pko_status);
debug("port %d: the number of packets - pko: %d\n", port,
(int)pko_status.packets);
/* TODO: other stats */
}
/**
* Returns the interface number for an IPD/PKO port number.
*
* @param ipd_port IPD/PKO port number
*
* @return Interface number
*/
int cvmx_helper_get_interface_num(int ipd_port)
{
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
const struct ipd_port_map *port_map;
int i;
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(ipd_port);
port_map = ipd_port_map_68xx;
for (i = 0; i < CVMX_HELPER_MAX_IFACE; i++) {
if (xp.port >= port_map[i].first_ipd_port &&
xp.port <= port_map[i].last_ipd_port)
return i;
}
return -1;
} else if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
const struct ipd_port_map *port_map;
int i;
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(ipd_port);
port_map = ipd_port_map_78xx;
for (i = 0; i < CVMX_HELPER_MAX_IFACE; i++) {
if (xp.port >= port_map[i].first_ipd_port &&
xp.port <= port_map[i].last_ipd_port)
return cvmx_helper_node_interface_to_xiface(xp.node, i);
}
return -1;
} else if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
const struct ipd_port_map *port_map;
int i;
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(ipd_port);
port_map = ipd_port_map_73xx;
for (i = 0; i < CVMX_HELPER_MAX_IFACE; i++) {
if (xp.port >= port_map[i].first_ipd_port &&
xp.port <= port_map[i].last_ipd_port)
return i;
}
return -1;
} else if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
const struct ipd_port_map *port_map;
int i;
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(ipd_port);
port_map = ipd_port_map_75xx;
for (i = 0; i < CVMX_HELPER_MAX_IFACE; i++) {
if (xp.port >= port_map[i].first_ipd_port &&
xp.port <= port_map[i].last_ipd_port)
return i;
}
return -1;
} else if (OCTEON_IS_MODEL(OCTEON_CN70XX) && ipd_port == 24) {
return 4;
}
if (ipd_port < 16)
return 0;
else if (ipd_port < 32)
return 1;
else if (ipd_port < 36)
return 2;
else if (ipd_port < 40)
return 3;
else if (ipd_port < 42)
return 4;
else if (ipd_port < 44)
return 5;
else if (ipd_port < 46)
return 6;
else if (ipd_port < 48)
return 7;
debug("%s: Illegal IPD port number %d\n", __func__, ipd_port);
return -1;
}
/**
* Returns the interface index number for an IPD/PKO port
* number.
*
* @param ipd_port IPD/PKO port number
*
* @return Interface index number
*/
int cvmx_helper_get_interface_index_num(int ipd_port)
{
if (octeon_has_feature(OCTEON_FEATURE_PKND)) {
const struct ipd_port_map *port_map;
int port;
enum port_map_if_type type = INVALID_IF_TYPE;
int i;
int num_interfaces;
if (OCTEON_IS_MODEL(OCTEON_CN68XX)) {
port_map = ipd_port_map_68xx;
} else if (OCTEON_IS_MODEL(OCTEON_CN78XX)) {
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(ipd_port);
port_map = ipd_port_map_78xx;
ipd_port = xp.port;
} else if (OCTEON_IS_MODEL(OCTEON_CN73XX)) {
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(ipd_port);
port_map = ipd_port_map_73xx;
ipd_port = xp.port;
} else if (OCTEON_IS_MODEL(OCTEON_CNF75XX)) {
struct cvmx_xport xp = cvmx_helper_ipd_port_to_xport(ipd_port);
port_map = ipd_port_map_75xx;
ipd_port = xp.port;
} else {
return -1;
}
num_interfaces = cvmx_helper_get_number_of_interfaces();
/* Get the interface type of the ipd port */
for (i = 0; i < num_interfaces; i++) {
if (ipd_port >= port_map[i].first_ipd_port &&
ipd_port <= port_map[i].last_ipd_port) {
type = port_map[i].type;
break;
}
}
/* Convert the ipd port to the interface port */
switch (type) {
/* Ethernet interfaces have a channel in lower 4 bits
* that is does not discriminate traffic, and is ignored.
*/
case GMII:
port = ipd_port - port_map[i].first_ipd_port;
/* CN68XX adds 0x40 to IPD_PORT when in XAUI/RXAUI
* mode of operation, adjust for that case
*/
if (port >= port_map[i].ipd_port_adj)
port -= port_map[i].ipd_port_adj;
port >>= 4;
return port;
/*
* These interfaces do not have physical ports,
* but have logical channels instead that separate
* traffic into logical streams
*/
case ILK:
case SRIO:
case NPI:
case LB:
port = ipd_port - port_map[i].first_ipd_port;
return port;
default:
printf("ERROR: %s: Illegal IPD port number %#x\n",
__func__, ipd_port);
return -1;
}
}
if (OCTEON_IS_MODEL(OCTEON_CN70XX))
return ipd_port & 3;
if (ipd_port < 32)
return ipd_port & 15;
else if (ipd_port < 40)
return ipd_port & 3;
else if (ipd_port < 48)
return ipd_port & 1;
debug("%s: Illegal IPD port number\n", __func__);
return -1;
}
/**
* Prints out a buffer with the address, hex bytes, and ASCII
*
* @param addr Start address to print on the left
* @param[in] buffer array of bytes to print
* @param count Number of bytes to print
*/
void cvmx_print_buffer_u8(unsigned int addr, const uint8_t *buffer,
size_t count)
{
uint i;
while (count) {
unsigned int linelen = count < 16 ? count : 16;
debug("%08x:", addr);
for (i = 0; i < linelen; i++)
debug(" %0*x", 2, buffer[i]);
while (i++ < 17)
debug(" ");
for (i = 0; i < linelen; i++) {
if (buffer[i] >= 0x20 && buffer[i] < 0x7f)
debug("%c", buffer[i]);
else
debug(".");
}
debug("\n");
addr += linelen;
buffer += linelen;
count -= linelen;
}
}
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