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#include <linux/delay.h>
#include "nitrox_dev.h"
#include "nitrox_csr.h"
/**
* emu_enable_cores - Enable EMU cluster cores.
* @ndev: N5 device
*/
static void emu_enable_cores(struct nitrox_device *ndev)
{
union emu_se_enable emu_se;
union emu_ae_enable emu_ae;
int i;
/* AE cores 20 per cluster */
emu_ae.value = 0;
emu_ae.s.enable = 0xfffff;
/* SE cores 16 per cluster */
emu_se.value = 0;
emu_se.s.enable = 0xffff;
/* enable per cluster cores */
for (i = 0; i < NR_CLUSTERS; i++) {
nitrox_write_csr(ndev, EMU_AE_ENABLEX(i), emu_ae.value);
nitrox_write_csr(ndev, EMU_SE_ENABLEX(i), emu_se.value);
}
}
/**
* nitrox_config_emu_unit - configure EMU unit.
* @ndev: N5 device
*/
void nitrox_config_emu_unit(struct nitrox_device *ndev)
{
union emu_wd_int_ena_w1s emu_wd_int;
union emu_ge_int_ena_w1s emu_ge_int;
u64 offset;
int i;
/* enable cores */
emu_enable_cores(ndev);
/* enable general error and watch dog interrupts */
emu_ge_int.value = 0;
emu_ge_int.s.se_ge = 0xffff;
emu_ge_int.s.ae_ge = 0xfffff;
emu_wd_int.value = 0;
emu_wd_int.s.se_wd = 1;
for (i = 0; i < NR_CLUSTERS; i++) {
offset = EMU_WD_INT_ENA_W1SX(i);
nitrox_write_csr(ndev, offset, emu_wd_int.value);
offset = EMU_GE_INT_ENA_W1SX(i);
nitrox_write_csr(ndev, offset, emu_ge_int.value);
}
}
static void reset_pkt_input_ring(struct nitrox_device *ndev, int ring)
{
union nps_pkt_in_instr_ctl pkt_in_ctl;
union nps_pkt_in_instr_baoff_dbell pkt_in_dbell;
union nps_pkt_in_done_cnts pkt_in_cnts;
u64 offset;
offset = NPS_PKT_IN_INSTR_CTLX(ring);
/* disable the ring */
pkt_in_ctl.value = nitrox_read_csr(ndev, offset);
pkt_in_ctl.s.enb = 0;
nitrox_write_csr(ndev, offset, pkt_in_ctl.value);
usleep_range(100, 150);
/* wait to clear [ENB] */
do {
pkt_in_ctl.value = nitrox_read_csr(ndev, offset);
} while (pkt_in_ctl.s.enb);
/* clear off door bell counts */
offset = NPS_PKT_IN_INSTR_BAOFF_DBELLX(ring);
pkt_in_dbell.value = 0;
pkt_in_dbell.s.dbell = 0xffffffff;
nitrox_write_csr(ndev, offset, pkt_in_dbell.value);
/* clear done counts */
offset = NPS_PKT_IN_DONE_CNTSX(ring);
pkt_in_cnts.value = nitrox_read_csr(ndev, offset);
nitrox_write_csr(ndev, offset, pkt_in_cnts.value);
usleep_range(50, 100);
}
void enable_pkt_input_ring(struct nitrox_device *ndev, int ring)
{
union nps_pkt_in_instr_ctl pkt_in_ctl;
u64 offset;
/* 64-byte instruction size */
offset = NPS_PKT_IN_INSTR_CTLX(ring);
pkt_in_ctl.value = nitrox_read_csr(ndev, offset);
pkt_in_ctl.s.is64b = 1;
pkt_in_ctl.s.enb = 1;
nitrox_write_csr(ndev, offset, pkt_in_ctl.value);
/* wait for set [ENB] */
do {
pkt_in_ctl.value = nitrox_read_csr(ndev, offset);
} while (!pkt_in_ctl.s.enb);
}
/**
* nitrox_config_pkt_input_rings - configure Packet Input Rings
* @ndev: N5 device
*/
void nitrox_config_pkt_input_rings(struct nitrox_device *ndev)
{
int i;
for (i = 0; i < ndev->nr_queues; i++) {
struct nitrox_cmdq *cmdq = &ndev->pkt_cmdqs[i];
union nps_pkt_in_instr_rsize pkt_in_rsize;
u64 offset;
reset_pkt_input_ring(ndev, i);
/* configure ring base address 16-byte aligned,
* size and interrupt threshold.
*/
offset = NPS_PKT_IN_INSTR_BADDRX(i);
nitrox_write_csr(ndev, offset, cmdq->dma);
/* configure ring size */
offset = NPS_PKT_IN_INSTR_RSIZEX(i);
pkt_in_rsize.value = 0;
pkt_in_rsize.s.rsize = ndev->qlen;
nitrox_write_csr(ndev, offset, pkt_in_rsize.value);
/* set high threshold for pkt input ring interrupts */
offset = NPS_PKT_IN_INT_LEVELSX(i);
nitrox_write_csr(ndev, offset, 0xffffffff);
enable_pkt_input_ring(ndev, i);
}
}
static void reset_pkt_solicit_port(struct nitrox_device *ndev, int port)
{
union nps_pkt_slc_ctl pkt_slc_ctl;
union nps_pkt_slc_cnts pkt_slc_cnts;
u64 offset;
/* disable slc port */
offset = NPS_PKT_SLC_CTLX(port);
pkt_slc_ctl.value = nitrox_read_csr(ndev, offset);
pkt_slc_ctl.s.enb = 0;
nitrox_write_csr(ndev, offset, pkt_slc_ctl.value);
usleep_range(100, 150);
/* wait to clear [ENB] */
do {
pkt_slc_ctl.value = nitrox_read_csr(ndev, offset);
} while (pkt_slc_ctl.s.enb);
/* clear slc counters */
offset = NPS_PKT_SLC_CNTSX(port);
pkt_slc_cnts.value = nitrox_read_csr(ndev, offset);
nitrox_write_csr(ndev, offset, pkt_slc_cnts.value);
usleep_range(50, 100);
}
void enable_pkt_solicit_port(struct nitrox_device *ndev, int port)
{
union nps_pkt_slc_ctl pkt_slc_ctl;
u64 offset;
offset = NPS_PKT_SLC_CTLX(port);
pkt_slc_ctl.value = 0;
pkt_slc_ctl.s.enb = 1;
/*
* 8 trailing 0x00 bytes will be added
* to the end of the outgoing packet.
*/
pkt_slc_ctl.s.z = 1;
/* enable response header */
pkt_slc_ctl.s.rh = 1;
nitrox_write_csr(ndev, offset, pkt_slc_ctl.value);
/* wait to set [ENB] */
do {
pkt_slc_ctl.value = nitrox_read_csr(ndev, offset);
} while (!pkt_slc_ctl.s.enb);
}
static void config_single_pkt_solicit_port(struct nitrox_device *ndev,
int port)
{
union nps_pkt_slc_int_levels pkt_slc_int;
u64 offset;
reset_pkt_solicit_port(ndev, port);
offset = NPS_PKT_SLC_INT_LEVELSX(port);
pkt_slc_int.value = 0;
/* time interrupt threshold */
pkt_slc_int.s.timet = 0x3fffff;
nitrox_write_csr(ndev, offset, pkt_slc_int.value);
enable_pkt_solicit_port(ndev, port);
}
void nitrox_config_pkt_solicit_ports(struct nitrox_device *ndev)
{
int i;
for (i = 0; i < ndev->nr_queues; i++)
config_single_pkt_solicit_port(ndev, i);
}
/**
* enable_nps_interrupts - enable NPS interrutps
* @ndev: N5 device.
*
* This includes NPS core, packet in and slc interrupts.
*/
static void enable_nps_interrupts(struct nitrox_device *ndev)
{
union nps_core_int_ena_w1s core_int;
/* NPS core interrutps */
core_int.value = 0;
core_int.s.host_wr_err = 1;
core_int.s.host_wr_timeout = 1;
core_int.s.exec_wr_timeout = 1;
core_int.s.npco_dma_malform = 1;
core_int.s.host_nps_wr_err = 1;
nitrox_write_csr(ndev, NPS_CORE_INT_ENA_W1S, core_int.value);
/* NPS packet in ring interrupts */
nitrox_write_csr(ndev, NPS_PKT_IN_RERR_LO_ENA_W1S, (~0ULL));
nitrox_write_csr(ndev, NPS_PKT_IN_RERR_HI_ENA_W1S, (~0ULL));
nitrox_write_csr(ndev, NPS_PKT_IN_ERR_TYPE_ENA_W1S, (~0ULL));
/* NPS packet slc port interrupts */
nitrox_write_csr(ndev, NPS_PKT_SLC_RERR_HI_ENA_W1S, (~0ULL));
nitrox_write_csr(ndev, NPS_PKT_SLC_RERR_LO_ENA_W1S, (~0ULL));
nitrox_write_csr(ndev, NPS_PKT_SLC_ERR_TYPE_ENA_W1S, (~0uLL));
}
void nitrox_config_nps_unit(struct nitrox_device *ndev)
{
union nps_core_gbl_vfcfg core_gbl_vfcfg;
/* endian control information */
nitrox_write_csr(ndev, NPS_CORE_CONTROL, 1ULL);
/* disable ILK interface */
core_gbl_vfcfg.value = 0;
core_gbl_vfcfg.s.ilk_disable = 1;
core_gbl_vfcfg.s.cfg = PF_MODE;
nitrox_write_csr(ndev, NPS_CORE_GBL_VFCFG, core_gbl_vfcfg.
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