/**********************************************************************
* Author : Cavium , Inc .
*
* Contact : support @ cavium . com
* Please include " LiquidIO " in the subject .
*
* Copyright ( c ) 2003 - 2016 Cavium , Inc .
*
* This file is free software ; you can redistribute it and / or modify
* it under the terms of the GNU General Public License , Version 2 , as
* published by the Free Software Foundation .
*
* This file is distributed in the hope that it will be useful , but
* AS - IS and WITHOUT ANY WARRANTY ; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE , TITLE , or
* NONINFRINGEMENT . See the GNU General Public License for more details .
***********************************************************************/
#include <linux/pci.h>
#include <linux/netdevice.h>
#include "liquidio_common.h"
#include "octeon_droq.h"
#include "octeon_iq.h"
#include "response_manager.h"
#include "octeon_device.h"
#include "octeon_main.h"
#include "cn66xx_regs.h"
#include "cn66xx_device.h"
#include "cn68xx_device.h"
#include "cn68xx_regs.h"
static void lio_cn68xx_set_dpi_regs(struct octeon_device *oct)
{
u32 i;
u32 fifo_sizes[6 ] = { 3 , 3 , 1 , 1 , 1 , 8 };
lio_pci_writeq(oct, CN6XXX_DPI_DMA_CTL_MASK, CN6XXX_DPI_DMA_CONTROL);
dev_dbg(&oct->pci_dev->dev, "DPI_DMA_CONTROL: 0x%016llx\n" ,
lio_pci_readq(oct, CN6XXX_DPI_DMA_CONTROL));
for (i = 0 ; i < 6 ; i++) {
/* Prevent service of instruction queue for all DMA engines
* Engine 5 will remain 0 . Engines 0 - 4 will be setup by
* core .
*/
lio_pci_writeq(oct, 0 , CN6XXX_DPI_DMA_ENG_ENB(i));
lio_pci_writeq(oct, fifo_sizes[i], CN6XXX_DPI_DMA_ENG_BUF(i));
dev_dbg(&oct->pci_dev->dev, "DPI_ENG_BUF%d: 0x%016llx\n" , i,
lio_pci_readq(oct, CN6XXX_DPI_DMA_ENG_BUF(i)));
}
/* DPI_SLI_PRT_CFG has MPS and MRRS settings that will be set
* separately .
*/
lio_pci_writeq(oct, 1 , CN6XXX_DPI_CTL);
dev_dbg(&oct->pci_dev->dev, "DPI_CTL: 0x%016llx\n" ,
lio_pci_readq(oct, CN6XXX_DPI_CTL));
}
static int lio_cn68xx_soft_reset(struct octeon_device *oct)
{
lio_cn6xxx_soft_reset(oct);
lio_cn68xx_set_dpi_regs(oct);
return 0 ;
}
static void lio_cn68xx_setup_pkt_ctl_regs(struct octeon_device *oct)
{
struct octeon_cn6xxx *cn68xx = (struct octeon_cn6xxx *)oct->chip;
u64 pktctl, tx_pipe, max_oqs;
pktctl = octeon_read_csr64(oct, CN6XXX_SLI_PKT_CTL);
/* 68XX specific */
max_oqs = CFG_GET_OQ_MAX_Q(CHIP_CONF(oct, cn6xxx));
tx_pipe = octeon_read_csr64(oct, CN68XX_SLI_TX_PIPE);
tx_pipe &= 0 xffffffffff00ffffULL; /* clear out NUMP field */
tx_pipe |= max_oqs << 16 ; /* put max_oqs in NUMP field */
octeon_write_csr64(oct, CN68XX_SLI_TX_PIPE, tx_pipe);
if (CFG_GET_IS_SLI_BP_ON(cn68xx->conf))
pktctl |= 0 xF;
else
/* Disable per-port backpressure. */
pktctl &= ~0 xF;
octeon_write_csr64(oct, CN6XXX_SLI_PKT_CTL, pktctl);
}
static int lio_cn68xx_setup_device_regs(struct octeon_device *oct)
{
lio_cn6xxx_setup_pcie_mps(oct, PCIE_MPS_DEFAULT);
lio_cn6xxx_setup_pcie_mrrs(oct, PCIE_MRRS_256B);
lio_cn6xxx_enable_error_reporting(oct);
lio_cn6xxx_setup_global_input_regs(oct);
lio_cn68xx_setup_pkt_ctl_regs(oct);
lio_cn6xxx_setup_global_output_regs(oct);
/* Default error timeout value should be 0x200000 to avoid host hang
* when reads invalid register
*/
octeon_write_csr64(oct, CN6XXX_SLI_WINDOW_CTL, 0 x200000ULL);
return 0 ;
}
static inline void lio_cn68xx_vendor_message_fix(struct octeon_device *oct)
{
u32 val = 0 ;
/* Set M_VEND1_DRP and M_VEND0_DRP bits */
pci_read_config_dword(oct->pci_dev, CN6XXX_PCIE_FLTMSK, &val);
val |= 0 x3;
pci_write_config_dword(oct->pci_dev, CN6XXX_PCIE_FLTMSK, val);
}
static int lio_is_210nv(struct octeon_device *oct)
{
u64 mio_qlm4_cfg = lio_pci_readq(oct, CN6XXX_MIO_QLM4_CFG);
return ((mio_qlm4_cfg & CN6XXX_MIO_QLM_CFG_MASK) == 0 );
}
int lio_setup_cn68xx_octeon_device(struct octeon_device *oct)
{
struct octeon_cn6xxx *cn68xx = (struct octeon_cn6xxx *)oct->chip;
u16 card_type = LIO_410NV;
if (octeon_map_pci_barx(oct, 0 , 0 ))
return 1 ;
if (octeon_map_pci_barx(oct, 1 , MAX_BAR1_IOREMAP_SIZE)) {
dev_err(&oct->pci_dev->dev, "%s CN68XX BAR1 map failed\n" ,
__func__);
octeon_unmap_pci_barx(oct, 0 );
return 1 ;
}
spin_lock_init(&cn68xx->lock_for_droq_int_enb_reg);
oct->fn_list.setup_iq_regs = lio_cn6xxx_setup_iq_regs;
oct->fn_list.setup_oq_regs = lio_cn6xxx_setup_oq_regs;
oct->fn_list.process_interrupt_regs = lio_cn6xxx_process_interrupt_regs;
oct->fn_list.soft_reset = lio_cn68xx_soft_reset;
oct->fn_list.setup_device_regs = lio_cn68xx_setup_device_regs;
oct->fn_list.update_iq_read_idx = lio_cn6xxx_update_read_index;
oct->fn_list.bar1_idx_setup = lio_cn6xxx_bar1_idx_setup;
oct->fn_list.bar1_idx_write = lio_cn6xxx_bar1_idx_write;
oct->fn_list.bar1_idx_read = lio_cn6xxx_bar1_idx_read;
oct->fn_list.enable_interrupt = lio_cn6xxx_enable_interrupt;
oct->fn_list.disable_interrupt = lio_cn6xxx_disable_interrupt;
oct->fn_list.enable_io_queues = lio_cn6xxx_enable_io_queues;
oct->fn_list.disable_io_queues = lio_cn6xxx_disable_io_queues;
lio_cn6xxx_setup_reg_address(oct, oct->chip, &oct->reg_list);
/* Determine variant of card */
if (lio_is_210nv(oct))
card_type = LIO_210NV;
cn68xx->conf = (struct octeon_config *)
oct_get_config_info(oct, card_type);
if (!cn68xx->conf) {
dev_err(&oct->pci_dev->dev, "%s No Config found for CN68XX %s\n" ,
__func__,
(card_type == LIO_410NV) ? LIO_410NV_NAME :
LIO_210NV_NAME);
octeon_unmap_pci_barx(oct, 0 );
octeon_unmap_pci_barx(oct, 1 );
return 1 ;
}
oct->coproc_clock_rate = 1000000 ULL * lio_cn6xxx_coprocessor_clock(oct);
lio_cn68xx_vendor_message_fix(oct);
return 0 ;
}
EXPORT_SYMBOL_GPL(lio_setup_cn68xx_octeon_device);
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