/**
* Configure a BAM pipe for satellite MTI use
*
*/
void bam_pipe_satellite_mti(void *base, u32 pipe, u32 irq_gen_addr, u32 ee)
{
bam_write_reg(base, P_IRQ_EN(pipe), 0);
bam_write_reg(base, P_IRQ_DEST_ADDR(pipe), irq_gen_addr);
bam_write_reg_field(base, IRQ_SIC_SEL, (1 << pipe), 1);
bam_write_reg_field(base, IRQ_SRCS_MSK, (1 << pipe), 1);
}
/**
* Initialize a BAM device
*
*/
int bam_init(void *base, u32 ee,
u16 summing_threshold,
u32 irq_mask, u32 *version, u32 *num_pipes)
{
/* disable bit#11 because of HW bug */
u32 cfg_bits = 0xffffffff & ~(1 << 11);
u32 ver = 0;
SPS_DBG2("sps:%s:bam=0x%x(va).ee=%d.", __func__, (u32) base, ee);
ver = bam_read_reg_field(base, REVISION, BAM_REVISION);
if ((ver < BAM_MIN_VERSION) || (ver > BAM_MAX_VERSION)) {
SPS_ERR("sps:bam 0x%x(va) Invalid BAM REVISION 0x%x.\n",
(u32) base, ver);
return -ENODEV;
} else
SPS_INFO("sps:REVISION of BAM 0x%x is 0x%x.\n",
(u32) base, ver);
if (summing_threshold == 0) {
summing_threshold = 4;
SPS_ERR("sps:bam 0x%x(va) summing_threshold is zero , "
"use default 4.\n", (u32) base);
}
bam_write_reg_field(base, CTRL, BAM_SW_RST, 1);
/* No delay needed */
bam_write_reg_field(base, CTRL, BAM_SW_RST, 0);
bam_write_reg_field(base, CTRL, BAM_EN, 1);
#ifdef CONFIG_SPS_SUPPORT_NDP_BAM
bam_write_reg_field(base, CTRL, CACHE_MISS_ERR_RESP_EN, 1);
bam_write_reg_field(base, CTRL, LOCAL_CLK_GATING, 1);
#endif
bam_write_reg(base, DESC_CNT_TRSHLD, summing_threshold);
bam_write_reg(base, CNFG_BITS, cfg_bits);
/*
* Enable Global BAM Interrupt - for error reasons ,
* filter with mask.
* Note: Pipes interrupts are disabled until BAM_P_IRQ_enn is set
*/
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), BAM_IRQ, 1);
bam_write_reg(base, IRQ_EN, irq_mask);
*num_pipes = bam_read_reg_field(base, NUM_PIPES, BAM_NUM_PIPES);
*version = ver;
return 0;
}
/**
* Configure a BAM pipe for satellite MTI use
*
*/
void bam_pipe_satellite_mti(void *base, u32 pipe, u32 irq_gen_addr, u32 ee)
{
bam_write_reg(base, P_IRQ_EN(pipe), 0);
#ifndef CONFIG_SPS_SUPPORT_NDP_BAM
bam_write_reg(base, P_IRQ_DEST_ADDR(pipe), irq_gen_addr);
bam_write_reg_field(base, IRQ_SIC_SEL, (1 << pipe), 1);
#endif
bam_write_reg_field(base, IRQ_SRCS_MSK, (1 << pipe), 1);
}
void bam_pipe_set_mti(void *base, u32 pipe, enum bam_enable irq_en,
u32 src_mask, u32 irq_gen_addr)
{
#ifndef CONFIG_SPS_SUPPORT_NDP_BAM
bam_write_reg(base, P_IRQ_DEST_ADDR(pipe), irq_gen_addr);
#endif
if (!irq_en)
src_mask = 0;
bam_write_reg(base, P_IRQ_EN(pipe), src_mask);
}
int bam_init(void *base, u32 ee,
u16 summing_threshold,
u32 irq_mask, u32 *version, u32 *num_pipes)
{
u32 cfg_bits = 0xffffffff & ~(1 << 11);
u32 ver = 0;
SPS_DBG2("sps:%s:bam=0x%x(va).ee=%d.", __func__, (u32) base, ee);
ver = bam_read_reg_field(base, REVISION, BAM_REVISION);
if ((ver < BAM_MIN_VERSION) || (ver > BAM_MAX_VERSION)) {
SPS_ERR("sps:bam 0x%x(va) Invalid BAM REVISION 0x%x.\n",
(u32) base, ver);
return -ENODEV;
} else
SPS_INFO("sps:REVISION of BAM 0x%x is 0x%x.\n",
(u32) base, ver);
if (summing_threshold == 0) {
summing_threshold = 4;
SPS_ERR("sps:bam 0x%x(va) summing_threshold is zero , "
"use default 4.\n", (u32) base);
}
bam_write_reg_field(base, CTRL, BAM_SW_RST, 1);
bam_write_reg_field(base, CTRL, BAM_SW_RST, 0);
bam_write_reg_field(base, CTRL, BAM_EN, 1);
#ifdef CONFIG_SPS_SUPPORT_NDP_BAM
bam_write_reg_field(base, CTRL, CACHE_MISS_ERR_RESP_EN, 1);
bam_write_reg_field(base, CTRL, LOCAL_CLK_GATING, 1);
#endif
bam_write_reg(base, DESC_CNT_TRSHLD, summing_threshold);
bam_write_reg(base, CNFG_BITS, cfg_bits);
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), BAM_IRQ, 1);
bam_write_reg(base, IRQ_EN, irq_mask);
*num_pipes = bam_read_reg_field(base, NUM_PIPES, BAM_NUM_PIPES);
*version = ver;
return 0;
}
/**
* Get BAM IRQ source and clear global IRQ status
*/
u32 bam_check_irq_source(void *base, u32 ee, u32 mask,
enum sps_callback_case *cb_case)
{
u32 source = bam_read_reg(base, IRQ_SRCS_EE(ee));
u32 clr = source & (1UL << 31);
if (clr) {
u32 status = 0;
status = bam_read_reg(base, IRQ_STTS);
if (status & IRQ_STTS_BAM_ERROR_IRQ) {
SPS_ERR("sps:bam 0x%x(va);bam irq status="
"0x%x.\nsps: BAM_ERROR_IRQ\n",
(u32) base, status);
bam_output_register_content(base);
*cb_case = SPS_CALLBACK_BAM_ERROR_IRQ;
} else if (status & IRQ_STTS_BAM_HRESP_ERR_IRQ) {
SPS_ERR("sps:bam 0x%x(va);bam irq status="
"0x%x.\nsps: BAM_HRESP_ERR_IRQ\n",
(u32) base, status);
bam_output_register_content(base);
*cb_case = SPS_CALLBACK_BAM_HRESP_ERR_IRQ;
} else
SPS_INFO("sps:bam 0x%x(va);bam irq status="
"0x%x.", (u32) base, status);
bam_write_reg(base, IRQ_CLR, status);
}
source &= (mask|(1UL << 31));
return source;
}
/**
* Configure interrupt for a BAM pipe
*
*/
void bam_pipe_set_irq(void *base, u32 pipe, enum bam_enable irq_en,
u32 src_mask, u32 ee)
{
SPS_DBG2("sps:%s:bam=0x%x(va).pipe=%d.", __func__, (u32) base, pipe);
bam_write_reg(base, P_IRQ_EN(pipe), src_mask);
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), (1 << pipe), irq_en);
}
/**
* Get and Clear BAM global IRQ status
*
* note: clear status only for pipes controlled by this
* processor
*/
u32 bam_get_and_clear_irq_status(void *base, u32 ee, u32 mask)
{
u32 status = bam_read_reg(base, IRQ_SRCS);
u32 clr = status &= mask;
bam_write_reg(base, IRQ_CLR, clr);
return status;
}
/**
* Get and Clear BAM pipe IRQ status
*
*/
u32 bam_pipe_get_and_clear_irq_status(void *base, u32 pipe)
{
u32 status = 0;
status = bam_read_reg(base, P_IRQ_STTS(pipe));
bam_write_reg(base, P_IRQ_CLR(pipe), status);
return status;
}
/**
* Disable a BAM device
*
*/
void bam_exit(void *base, u32 ee)
{
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), BAM_IRQ, 0);
bam_write_reg(base, IRQ_EN, 0);
/* Disable the BAM */
bam_write_reg_field(base, CTRL, BAM_EN, 0);
}
/**
* Initialize a BAM device
*
*/
int bam_init(void *base, u32 ee,
u16 summing_threshold,
u32 irq_mask, u32 *version, u32 *num_pipes)
{
/* disable bit#11 because of HW bug */
u32 cfg_bits = 0xffffffff & ~(1 << 11);
u32 ver = 0;
ver = bam_read_reg(base, REVISION);
if ((ver < BAM_MIN_VERSION) || (ver > BAM_MAX_VERSION)) {
pr_err("bam:Invalid BAM version 0x%x.\n", ver);
return -ENODEV;
}
if (summing_threshold == 0) {
summing_threshold = 4;
pr_err("bam:summing_threshold is zero , use default 4.\n");
}
bam_write_reg_field(base, CTRL, BAM_SW_RST, 1);
/* No delay needed */
bam_write_reg_field(base, CTRL, BAM_SW_RST, 0);
bam_write_reg_field(base, CTRL, BAM_EN, 1);
bam_write_reg(base, DESC_CNT_TRSHLD, summing_threshold);
bam_write_reg(base, CNFG_BITS, cfg_bits);
/*
* Enable Global BAM Interrupt - for error reasons ,
* filter with mask.
* Note: Pipes interrupts are disabled until BAM_P_IRQ_enn is set
*/
bam_write_reg_field(base, IRQ_SRCS_MSK, BAM_IRQ, 1);
bam_write_reg(base, IRQ_EN, irq_mask);
*num_pipes = bam_read_reg(base, NUM_PIPES);
*version = ver;
return 0;
}
/**
* Reset the BAM pipe
*
*/
void bam_pipe_exit(void *base, u32 pipe, u32 ee)
{
bam_write_reg(base, P_IRQ_EN(pipe), 0);
/* Disable the Pipe Interrupt at the BAM level */
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), (1 << pipe), 0);
/* Pipe Disable */
bam_write_reg_field(base, P_CTRL(pipe), P_EN, 0);
}
/**
* Configure MTI for a BAM pipe
*
*/
void bam_pipe_set_mti(void *base, u32 pipe, enum bam_enable irq_en,
u32 src_mask, u32 irq_gen_addr)
{
/*
* MTI use is only supported on BAMs when global config is controlled
* by a remote processor.
* Consequently, the global configuration register to enable SIC (MTI)
* support cannot be accessed.
* The remote processor must be relied upon to enable the SIC and the
* interrupt. Since the remote processor enable both SIC and interrupt,
* the interrupt enable mask must be set to zero for polling mode.
*/
#ifndef CONFIG_SPS_SUPPORT_NDP_BAM
bam_write_reg(base, P_IRQ_DEST_ADDR(pipe), irq_gen_addr);
#endif
if (!irq_en)
src_mask = 0;
bam_write_reg(base, P_IRQ_EN(pipe), src_mask);
}
/**
* Disable a BAM device
*
*/
void bam_exit(void *base, u32 ee)
{
SPS_DBG2("sps:%s:bam=0x%x(va).ee=%d.", __func__, (u32) base, ee);
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), BAM_IRQ, 0);
bam_write_reg(base, IRQ_EN, 0);
/* Disable the BAM */
bam_write_reg_field(base, CTRL, BAM_EN, 0);
}
/**
* Reset the BAM pipe
*
*/
void bam_pipe_exit(void *base, u32 pipe, u32 ee)
{
SPS_DBG2("sps:%s:bam=0x%x(va).pipe=%d.", __func__, (u32) base, pipe);
bam_write_reg(base, P_IRQ_EN(pipe), 0);
/* Disable the Pipe Interrupt at the BAM level */
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), (1 << pipe), 0);
/* Pipe Disable */
bam_write_reg_field(base, P_CTRL(pipe), P_EN, 0);
}
void bam_pipe_exit(void *base, u32 pipe, u32 ee)
{
SPS_DBG2("sps:%s:bam=0x%x(va).pipe=%d.", __func__, (u32) base, pipe);
bam_write_reg(base, P_IRQ_EN(pipe), 0);
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), (1 << pipe), 0);
bam_write_reg_field(base, P_CTRL(pipe), P_EN, 0);
}
/**
* Initialize a BAM pipe
*/
int bam_pipe_init(void *base, u32 pipe, struct bam_pipe_parameters *param,
u32 ee)
{
/* Reset the BAM pipe */
bam_write_reg(base, P_RST(pipe), 1);
/* No delay needed */
bam_write_reg(base, P_RST(pipe), 0);
/* Enable the Pipe Interrupt at the BAM level */
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), (1 << pipe), 1);
bam_write_reg(base, P_IRQ_EN(pipe), param->pipe_irq_mask);
bam_write_reg_field(base, P_CTRL(pipe), P_DIRECTION, param->dir);
bam_write_reg_field(base, P_CTRL(pipe), P_SYS_MODE, param->mode);
bam_write_reg(base, P_EVNT_GEN_TRSHLD(pipe), param->event_threshold);
bam_write_reg(base, P_DESC_FIFO_ADDR(pipe), param->desc_base);
bam_write_reg_field(base, P_FIFO_SIZES(pipe), P_DESC_FIFO_SIZE,
param->desc_size);
bam_write_reg_field(base, P_CTRL(pipe), P_SYS_STRM,
param->stream_mode);
if (param->mode == BAM_PIPE_MODE_BAM2BAM) {
u32 peer_dest_addr = param->peer_phys_addr +
P_EVNT_REG(param->peer_pipe);
bam_write_reg(base, P_DATA_FIFO_ADDR(pipe),
param->data_base);
bam_write_reg_field(base, P_FIFO_SIZES(pipe),
P_DATA_FIFO_SIZE, param->data_size);
bam_write_reg(base, P_EVNT_DEST_ADDR(pipe), peer_dest_addr);
SPS_DBG2("sps:bam=0x%x(va).pipe=%d.peer_bam=0x%x."
"peer_pipe=%d.\n",
(u32) base, pipe,
(u32) param->peer_phys_addr,
param->peer_pipe);
}
/* Pipe Enable - at last */
bam_write_reg_field(base, P_CTRL(pipe), P_EN, 1);
return 0;
}
/**
* Get BAM IRQ source and clear global IRQ status
*/
u32 bam_check_irq_source(void *base, u32 ee, u32 mask)
{
u32 source = bam_read_reg(base, IRQ_SRCS_EE(ee));
u32 clr = source & (1UL << 31);
if (clr) {
u32 status = 0;
status = bam_read_reg(base, IRQ_STTS);
bam_write_reg(base, IRQ_CLR, status);
if (printk_ratelimit()) {
if (status & IRQ_STTS_BAM_ERROR_IRQ)
SPS_ERR("sps:bam 0x%x(va);bam irq status="
"0x%x.\nsps: BAM_ERROR_IRQ\n",
(u32) base, status);
else
SPS_INFO("sps:bam 0x%x(va);bam irq status="
"0x%x.", (u32) base, status);
}
}
source &= mask;
return source;
}
/**
* Initialize a BAM pipe
*/
int bam_pipe_init(void *base, u32 pipe, struct bam_pipe_parameters *param,
u32 ee)
{
SPS_DBG2("sps:%s:bam=0x%x(va).pipe=%d.", __func__, (u32) base, pipe);
/* Reset the BAM pipe */
bam_write_reg(base, P_RST(pipe), 1);
/* No delay needed */
bam_write_reg(base, P_RST(pipe), 0);
/* Enable the Pipe Interrupt at the BAM level */
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), (1 << pipe), 1);
bam_write_reg(base, P_IRQ_EN(pipe), param->pipe_irq_mask);
bam_write_reg_field(base, P_CTRL(pipe), P_DIRECTION, param->dir);
bam_write_reg_field(base, P_CTRL(pipe), P_SYS_MODE, param->mode);
bam_write_reg(base, P_EVNT_GEN_TRSHLD(pipe), param->event_threshold);
bam_write_reg(base, P_DESC_FIFO_ADDR(pipe), param->desc_base);
bam_write_reg_field(base, P_FIFO_SIZES(pipe), P_DESC_FIFO_SIZE,
param->desc_size);
bam_write_reg_field(base, P_CTRL(pipe), P_SYS_STRM,
param->stream_mode);
#ifdef CONFIG_SPS_SUPPORT_NDP_BAM
bam_write_reg_field(base, P_CTRL(pipe), P_LOCK_GROUP,
param->lock_group);
SPS_DBG("sps:bam=0x%x(va).pipe=%d.lock_group=%d.\n",
(u32) base, pipe, param->lock_group);
#endif
if (param->mode == BAM_PIPE_MODE_BAM2BAM) {
u32 peer_dest_addr = param->peer_phys_addr +
P_EVNT_REG(param->peer_pipe);
bam_write_reg(base, P_DATA_FIFO_ADDR(pipe),
param->data_base);
bam_write_reg_field(base, P_FIFO_SIZES(pipe),
P_DATA_FIFO_SIZE, param->data_size);
bam_write_reg(base, P_EVNT_DEST_ADDR(pipe), peer_dest_addr);
SPS_DBG2("sps:bam=0x%x(va).pipe=%d.peer_bam=0x%x."
"peer_pipe=%d.\n",
(u32) base, pipe,
(u32) param->peer_phys_addr,
param->peer_pipe);
#ifdef CONFIG_SPS_SUPPORT_NDP_BAM
bam_write_reg_field(base, P_CTRL(pipe), P_WRITE_NWD,
param->write_nwd);
SPS_DBG("sps:%s WRITE_NWD bit for this bam2bam pipe.",
param->write_nwd ? "Set" : "Do not set");
#endif
}
/* Pipe Enable - at last */
bam_write_reg_field(base, P_CTRL(pipe), P_EN, 1);
return 0;
}
/**
* Configure interrupt for a BAM pipe
*
*/
void bam_pipe_set_irq(void *base, u32 pipe, enum bam_enable irq_en,
u32 src_mask, u32 ee)
{
bam_write_reg(base, P_IRQ_EN(pipe), src_mask);
bam_write_reg_field(base, IRQ_SRCS_MSK_EE(ee), (1 << pipe), irq_en);
}
