/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qman_priv.h"
u16 qman_ip_rev;
EXPORT_SYMBOL(qman_ip_rev);
u16 qm_channel_pool1 = QMAN_CHANNEL_POOL1;
EXPORT_SYMBOL(qm_channel_pool1);
u16 qm_channel_caam = QMAN_CHANNEL_CAAM;
EXPORT_SYMBOL(qm_channel_caam);
/* Register offsets */
#define REG_QCSP_LIO_CFG(n) (0x0000 + ((n) * 0x10))
#define REG_QCSP_IO_CFG(n) (0x0004 + ((n) * 0x10))
#define REG_QCSP_DD_CFG(n) (0x000c + ((n) * 0x10))
#define REG_DD_CFG 0x0200
#define REG_DCP_CFG(n) (0x0300 + ((n) * 0x10))
#define REG_DCP_DD_CFG(n) (0x0304 + ((n) * 0x10))
#define REG_DCP_DLM_AVG(n) (0x030c + ((n) * 0x10))
#define REG_PFDR_FPC 0x0400
#define REG_PFDR_FP_HEAD 0x0404
#define REG_PFDR_FP_TAIL 0x0408
#define REG_PFDR_FP_LWIT 0x0410
#define REG_PFDR_CFG 0x0414
#define REG_SFDR_CFG 0x0500
#define REG_SFDR_IN_USE 0x0504
#define REG_WQ_CS_CFG(n) (0x0600 + ((n) * 0x04))
#define REG_WQ_DEF_ENC_WQID 0x0630
#define REG_WQ_SC_DD_CFG(n) (0x640 + ((n) * 0x04))
#define REG_WQ_PC_DD_CFG(n) (0x680 + ((n) * 0x04))
#define REG_WQ_DC0_DD_CFG(n) (0x6c0 + ((n) * 0x04))
#define REG_WQ_DC1_DD_CFG(n) (0x700 + ((n) * 0x04))
#define REG_WQ_DCn_DD_CFG(n) (0x6c0 + ((n) * 0x40)) /* n=2,3 */
#define REG_CM_CFG 0x0800
#define REG_ECSR 0x0a00
#define REG_ECIR 0x0a04
#define REG_EADR 0x0a08
#define REG_ECIR2 0x0a0c
#define REG_EDATA(n) (0x0a10 + ((n) * 0x04))
#define REG_SBEC(n) (0x0a80 + ((n) * 0x04))
#define REG_MCR 0x0b00
#define REG_MCP(n) (0x0b04 + ((n) * 0x04))
#define REG_MISC_CFG 0x0be0
#define REG_HID_CFG 0x0bf0
#define REG_IDLE_STAT 0x0bf4
#define REG_IP_REV_1 0x0bf8
#define REG_IP_REV_2 0x0bfc
#define REG_FQD_BARE 0x0c00
#define REG_PFDR_BARE 0x0c20
#define REG_offset_BAR 0x0004 /* relative to REG_[FQD|PFDR]_BARE */
#define REG_offset_AR 0x0010 /* relative to REG_[FQD|PFDR]_BARE */
#define REG_QCSP_BARE 0x0c80
#define REG_QCSP_BAR 0x0c84
#define REG_CI_SCHED_CFG 0x0d00
#define REG_SRCIDR 0x0d04
#define REG_LIODNR 0x0d08
#define REG_CI_RLM_AVG 0x0d14
#define REG_ERR_ISR 0x0e00
#define REG_ERR_IER 0x0e04
#define REG_REV3_QCSP_LIO_CFG(n) (0x1000 + ((n) * 0x10))
#define REG_REV3_QCSP_IO_CFG(n) (0x1004 + ((n) * 0x10))
#define REG_REV3_QCSP_DD_CFG(n) (0x100c + ((n) * 0x10))
/* Assists for QMAN_MCR */
#define MCR_INIT_PFDR 0x01000000
#define MCR_get_rslt(v) (u8)((v) >> 24)
#define MCR_rslt_idle(r) (!(r) || ((r) >= 0xf0))
#define MCR_rslt_ok(r) ((r) == 0xf0)
#define MCR_rslt_eaccess(r) ((r) == 0xf8)
#define MCR_rslt_inval(r) ((r) == 0xff)
/*
* Corenet initiator settings. Stash request queues are 4-deep to match cores
* ability to snarf. Stash priority is 3, other priorities are 2.
*/
#define QM_CI_SCHED_CFG_SRCCIV 4
#define QM_CI_SCHED_CFG_SRQ_W 3
#define QM_CI_SCHED_CFG_RW_W 2
#define QM_CI_SCHED_CFG_BMAN_W 2
/* write SRCCIV enable */
#define QM_CI_SCHED_CFG_SRCCIV_EN BIT(31)
/* Follows WQ_CS_CFG0-5 */
enum qm_wq_class {
qm_wq_portal = 0,
qm_wq_pool = 1,
qm_wq_fman0 = 2,
qm_wq_fman1 = 3,
qm_wq_caam = 4,
qm_wq_pme = 5,
qm_wq_first = qm_wq_portal,
qm_wq_last = qm_wq_pme
};
/* Follows FQD_[BARE|BAR|AR] and PFDR_[BARE|BAR|AR] */
enum qm_memory {
qm_memory_fqd,
qm_memory_pfdr
};
/* Used by all error interrupt registers except 'inhibit' */
#define QM_EIRQ_CIDE 0x20000000 /* Corenet Initiator Data Error */
#define QM_EIRQ_CTDE 0x10000000 /* Corenet Target Data Error */
#define QM_EIRQ_CITT 0x08000000 /* Corenet Invalid Target Transaction */
#define QM_EIRQ_PLWI 0x04000000 /* PFDR Low Watermark */
#define QM_EIRQ_MBEI 0x02000000 /* Multi-bit ECC Error */
#define QM_EIRQ_SBEI 0x01000000 /* Single-bit ECC Error */
#define QM_EIRQ_PEBI 0x00800000 /* PFDR Enqueues Blocked Interrupt */
#define QM_EIRQ_IFSI 0x00020000 /* Invalid FQ Flow Control State */
#define QM_EIRQ_ICVI 0x00010000 /* Invalid Command Verb */
#define QM_EIRQ_IDDI 0x00000800 /* Invalid Dequeue (Direct-connect) */
#define QM_EIRQ_IDFI 0x00000400 /* Invalid Dequeue FQ */
#define QM_EIRQ_IDSI 0x00000200 /* Invalid Dequeue Source */
#define QM_EIRQ_IDQI 0x00000100 /* Invalid Dequeue Queue */
#define QM_EIRQ_IECE 0x00000010 /* Invalid Enqueue Configuration */
#define QM_EIRQ_IEOI 0x00000008 /* Invalid Enqueue Overflow */
#define QM_EIRQ_IESI 0x00000004 /* Invalid Enqueue State */
#define QM_EIRQ_IECI 0x00000002 /* Invalid Enqueue Channel */
#define QM_EIRQ_IEQI 0x00000001 /* Invalid Enqueue Queue */
/* QMAN_ECIR valid error bit */
#define PORTAL_ECSR_ERR (QM_EIRQ_IEQI | QM_EIRQ_IESI | QM_EIRQ_IEOI | \
QM_EIRQ_IDQI | QM_EIRQ_IDSI | QM_EIRQ_IDFI | \
QM_EIRQ_IDDI | QM_EIRQ_ICVI | QM_EIRQ_IFSI)
#define FQID_ECSR_ERR (QM_EIRQ_IEQI | QM_EIRQ_IECI | QM_EIRQ_IESI | \
QM_EIRQ_IEOI | QM_EIRQ_IDQI | QM_EIRQ_IDFI | \
QM_EIRQ_IFSI)
struct qm_ecir {
u32 info; /* res[30-31], ptyp[29], pnum[24-28], fqid[0-23] */
};
static bool qm_ecir_is_dcp(const struct qm_ecir *p)
{
return p->info & BIT(29);
}
static int qm_ecir_get_pnum(const struct qm_ecir *p)
{
return (p->info >> 24) & 0x1f;
}
static int qm_ecir_get_fqid(const struct qm_ecir *p)
{
return p->info & (BIT(24) - 1);
}
struct qm_ecir2 {
u32 info; /* ptyp[31], res[10-30], pnum[0-9] */
};
static bool qm_ecir2_is_dcp(const struct qm_ecir2 *p)
{
return p->info & BIT(31);
}
static int qm_ecir2_get_pnum(const struct qm_ecir2 *p)
{
return p->info & (BIT(10) - 1);
}
struct qm_eadr {
u32 info; /* memid[24-27], eadr[0-11] */
/* v3: memid[24-28], eadr[0-15] */
};
static int qm_eadr_get_memid(const struct qm_eadr *p)
{
return (p->info >> 24) & 0xf;
}
static int qm_eadr_get_eadr(const struct qm_eadr *p)
{
return p->info & (BIT(12) - 1);
}
static int qm_eadr_v3_get_memid(const struct qm_eadr *p)
{
return (p->info >> 24) & 0x1f;
}
static int qm_eadr_v3_get_eadr(const struct qm_eadr *p)
{
return p->info & (BIT(16) - 1);
}
struct qman_hwerr_txt {
u32 mask;
const char *txt;
};
static const struct qman_hwerr_txt qman_hwerr_txts[] = {
{ QM_EIRQ_CIDE, "Corenet Initiator Data Error" },
{ QM_EIRQ_CTDE, "Corenet Target Data Error" },
{ QM_EIRQ_CITT, "Corenet Invalid Target Transaction" },
{ QM_EIRQ_PLWI, "PFDR Low Watermark" },
{ QM_EIRQ_MBEI, "Multi-bit ECC Error" },
{ QM_EIRQ_SBEI, "Single-bit ECC Error" },
{ QM_EIRQ_PEBI, "PFDR Enqueues Blocked Interrupt" },
{ QM_EIRQ_ICVI, "Invalid Command Verb" },
{ QM_EIRQ_IFSI, "Invalid Flow Control State" },
{ QM_EIRQ_IDDI, "Invalid Dequeue (Direct-connect)" },
{ QM_EIRQ_IDFI, "Invalid Dequeue FQ" },
{ QM_EIRQ_IDSI, "Invalid Dequeue Source" },
{ QM_EIRQ_IDQI, "Invalid Dequeue Queue" },
{ QM_EIRQ_IECE, "Invalid Enqueue Configuration" },
{ QM_EIRQ_IEOI, "Invalid Enqueue Overflow" },
{ QM_EIRQ_IESI, "Invalid Enqueue State" },
{ QM_EIRQ_IECI, "Invalid Enqueue Channel" },
{ QM_EIRQ_IEQI, "Invalid Enqueue Queue" },
};
struct qman_error_info_mdata {
u16 addr_mask;
u16 bits;
const char *txt;
};
static const struct qman_error_info_mdata error_mdata[] = {
{ 0x01FF, 24, "FQD cache tag memory 0" },
{ 0x01FF, 24, "FQD cache tag memory 1" },
{ 0x01FF, 24, "FQD cache tag memory 2" },
{ 0x01FF, 24, "FQD cache tag memory 3" },
{ 0x0FFF, 512, "FQD cache memory" },
{ 0x07FF, 128, "SFDR memory" },
{ 0x01FF, 72, "WQ context memory" },
{ 0x00FF, 240, "CGR memory" },
{ 0x00FF, 302, "Internal Order Restoration List memory" },
{ 0x01FF, 256, "SW portal ring memory" },
};
#define QMAN_ERRS_TO_DISABLE (QM_EIRQ_PLWI | QM_EIRQ_PEBI)
/*
* TODO: unimplemented registers
*
* Keeping a list here of QMan registers I have not yet covered;
* QCSP_DD_IHRSR, QCSP_DD_IHRFR, QCSP_DD_HASR,
* DCP_DD_IHRSR, DCP_DD_IHRFR, DCP_DD_HASR, CM_CFG,
* QMAN_EECC, QMAN_SBET, QMAN_EINJ, QMAN_SBEC0-12
*/
/* Pointer to the start of the QMan's CCSR space */
static u32 __iomem *qm_ccsr_start;
/* A SDQCR mask comprising all the available/visible pool channels */
static u32 qm_pools_sdqcr;
static int __qman_probed;
static int __qman_requires_cleanup;
static inline u32 qm_ccsr_in(u32 offset)
{
return ioread32be(qm_ccsr_start + offset/4);
}
static inline void qm_ccsr_out(u32 offset, u32 val)
{
iowrite32be(val, qm_ccsr_start + offset/4);
}
u32 qm_get_pools_sdqcr(void)
{
return qm_pools_sdqcr;
}
enum qm_dc_portal {
qm_dc_portal_fman0 = 0,
qm_dc_portal_fman1 = 1
};
static void qm_set_dc(enum qm_dc_portal portal, int ed, u8 sernd)
{
DPAA_ASSERT(!ed || portal == qm_dc_portal_fman0 ||
portal == qm_dc_portal_fman1);
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
qm_ccsr_out(REG_DCP_CFG(portal),
(ed ? 0x1000 : 0) | (sernd & 0x3ff));
else
qm_ccsr_out(REG_DCP_CFG(portal),
(ed ? 0x100 : 0) | (sernd & 0x1f));
}
static void qm_set_wq_scheduling(enum qm_wq_class wq_class,
u8 cs_elev, u8 csw2, u8 csw3, u8 csw4,
u8 csw5, u8 csw6, u8 csw7)
{
qm_ccsr_out(REG_WQ_CS_CFG(wq_class), ((cs_elev & 0xff) << 24) |
((csw2 & 0x7) << 20) | ((csw3 & 0x7) << 16) |
((csw4 & 0x7) << 12) | ((csw5 & 0x7) << 8) |
((csw6 & 0x7) << 4) | (csw7 & 0x7));
}
static void qm_set_hid(void)
{
qm_ccsr_out(REG_HID_CFG, 0);
}
static void qm_set_corenet_initiator(void)
{
qm_ccsr_out(REG_CI_SCHED_CFG, QM_CI_SCHED_CFG_SRCCIV_EN |
(QM_CI_SCHED_CFG_SRCCIV << 24) |
(QM_CI_SCHED_CFG_SRQ_W << 8) |
(QM_CI_SCHED_CFG_RW_W << 4) |
QM_CI_SCHED_CFG_BMAN_W);
}
static void qm_get_version(u16 *id, u8 *major, u8 *minor)
{
u32 v = qm_ccsr_in(REG_IP_REV_1);
*id = (v >> 16);
*major = (v >> 8) & 0xff;
*minor = v & 0xff;
}
#define PFDR_AR_EN BIT(31)
static int qm_set_memory(enum qm_memory memory, u64 ba, u32 size)
{
void *ptr;
u32 offset = (memory == qm_memory_fqd) ? REG_FQD_BARE : REG_PFDR_BARE;
u32 exp = ilog2(size);
u32 bar, bare;
/* choke if size isn't within range */
DPAA_ASSERT((size >= 4096) && (size <= 1024*1024*1024) &&
is_power_of_2(size));
/* choke if 'ba' has lower-alignment than 'size' */
DPAA_ASSERT(!(ba & (size - 1)));
/* Check to see if QMan has already been initialized */
bar = qm_ccsr_in(offset + REG_offset_BAR);
if (bar) {
/* Maker sure ba == what was programmed) */
bare = qm_ccsr_in(offset);
if (bare != upper_32_bits(ba) || bar != lower_32_bits(ba)) {
pr_err("Attempted to reinitialize QMan with different BAR, got 0x%llx read BARE=0x%x BAR=0x%x\n",
ba, bare, bar);
return -ENOMEM;
}
__qman_requires_cleanup = 1;
/* Return 1 to indicate memory was previously programmed */
return 1;
}
/* Need to temporarily map the area to make sure it is zeroed */
ptr = memremap(ba, size, MEMREMAP_WB);
if (!ptr) {
pr_crit("memremap() of QMan private memory failed\n");
return -ENOMEM;
}
memset(ptr, 0, size);
#ifdef CONFIG_PPC
/*
* PPC doesn't appear to flush the cache on memunmap() but the
* cache must be flushed since QMan does non coherent accesses
* to this memory
*/
flush_dcache_range((unsigned long) ptr, (unsigned long) ptr+size);
#endif
memunmap(ptr);
qm_ccsr_out(offset, upper_32_bits(ba));
qm_ccsr_out(offset + REG_offset_BAR, lower_32_bits(ba));
qm_ccsr_out(offset + REG_offset_AR, PFDR_AR_EN | (exp - 1));
return 0;
}
static void qm_set_pfdr_threshold(u32 th, u8 k)
{
qm_ccsr_out(REG_PFDR_FP_LWIT, th & 0xffffff);
qm_ccsr_out(REG_PFDR_CFG, k);
}
static void qm_set_sfdr_threshold(u16 th)
{
qm_ccsr_out(REG_SFDR_CFG, th & 0x3ff);
}
static int qm_init_pfdr(struct device *dev, u32 pfdr_start, u32 num)
{
u8 rslt = MCR_get_rslt(qm_ccsr_in(REG_MCR));
DPAA_ASSERT(pfdr_start && !(pfdr_start & 7) && !(num & 7) && num);
/* Make sure the command interface is 'idle' */
if (!MCR_rslt_idle(rslt)) {
dev_crit(dev, "QMAN_MCR isn't idle");
WARN_ON(1);
}
/* Write the MCR command params then the verb */
qm_ccsr_out(REG_MCP(0), pfdr_start);
/*
* TODO: remove this - it's a workaround for a model bug that is
* corrected in more recent versions. We use the workaround until
* everyone has upgraded.
*/
qm_ccsr_out(REG_MCP(1), pfdr_start + num - 16);
dma_wmb();
qm_ccsr_out(REG_MCR, MCR_INIT_PFDR);
/* Poll for the result */
do {
rslt = MCR_get_rslt(qm_ccsr_in(REG_MCR));
} while (!MCR_rslt_idle(rslt));
if (MCR_rslt_ok(rslt))
return 0;
if (MCR_rslt_eaccess(rslt))
return -EACCES;
if (MCR_rslt_inval(rslt))
return -EINVAL;
dev_crit(dev, "Unexpected result from MCR_INIT_PFDR: %02x\n", rslt);
return -ENODEV;
}
/*
* QMan needs two global memory areas initialized at boot time:
* 1) FQD: Frame Queue Descriptors used to manage frame queues
* 2) PFDR: Packed Frame Queue Descriptor Records used to store frames
* Both areas are reserved using the device tree reserved memory framework
* and the addresses and sizes are initialized when the QMan device is probed
*/
static dma_addr_t fqd_a, pfdr_a;
static size_t fqd_sz, pfdr_sz;
#ifdef CONFIG_PPC
/*
* Support for PPC Device Tree backward compatibility when compatible
* string is set to fsl-qman-fqd and fsl-qman-pfdr
*/
static int zero_priv_mem(phys_addr_t addr, size_t sz)
{
/* map as cacheable, non-guarded */
void __iomem *tmpp = ioremap_cache(addr, sz);
if (!tmpp)
return -ENOMEM;
memset_io(tmpp, 0, sz);
flush_dcache_range((unsigned long)tmpp,
(unsigned long)tmpp + sz);
iounmap(tmpp);
return 0;
}
static int qman_fqd(struct reserved_mem *rmem)
{
fqd_a = rmem->base;
fqd_sz = rmem->size;
WARN_ON(!(fqd_a && fqd_sz));
return 0;
}
RESERVEDMEM_OF_DECLARE(qman_fqd, "fsl,qman-fqd", qman_fqd);
static int qman_pfdr(struct reserved_mem *rmem)
{
pfdr_a = rmem->base;
pfdr_sz = rmem->size;
WARN_ON(!(pfdr_a && pfdr_sz));
return 0;
}
RESERVEDMEM_OF_DECLARE(qman_pfdr, "fsl,qman-pfdr", qman_pfdr);
#endif
unsigned int qm_get_fqid_maxcnt(void)
{
return fqd_sz / 64;
}
static void log_edata_bits(struct device *dev, u32 bit_count)
{
u32 i, j, mask = 0xffffffff;
dev_warn(dev, "ErrInt, EDATA:\n");
i = bit_count / 32;
if (bit_count % 32) {
i++;
mask = ~(mask << bit_count % 32);
}
j = 16 - i;
dev_warn(dev, " 0x%08x\n", qm_ccsr_in(REG_EDATA(j)) & mask);
j++;
for (; j < 16; j++)
dev_warn(dev, " 0x%08x\n", qm_ccsr_in(REG_EDATA(j)));
}
static void log_additional_error_info(struct device *dev, u32 isr_val,
u32 ecsr_val)
{
struct qm_ecir ecir_val;
struct qm_eadr eadr_val;
int memid;
ecir_val.info = qm_ccsr_in(REG_ECIR);
/* Is portal info valid */
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) {
struct qm_ecir2 ecir2_val;
ecir2_val.info = qm_ccsr_in(REG_ECIR2);
if (ecsr_val & PORTAL_ECSR_ERR) {
dev_warn(dev, "ErrInt: %s id %d\n",
qm_ecir2_is_dcp(&ecir2_val) ? "DCP" : "SWP",
qm_ecir2_get_pnum(&ecir2_val));
}
if (ecsr_val & (FQID_ECSR_ERR | QM_EIRQ_IECE))
dev_warn(dev, "ErrInt: ecir.fqid 0x%x\n",
qm_ecir_get_fqid(&ecir_val));
if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) {
eadr_val.info = qm_ccsr_in(REG_EADR);
memid = qm_eadr_v3_get_memid(&eadr_val);
dev_warn(dev, "ErrInt: EADR Memory: %s, 0x%x\n",
error_mdata[memid].txt,
error_mdata[memid].addr_mask
& qm_eadr_v3_get_eadr(&eadr_val));
log_edata_bits(dev, error_mdata[memid].bits);
}
} else {
if (ecsr_val & PORTAL_ECSR_ERR) {
dev_warn(dev, "ErrInt: %s id %d\n",
qm_ecir_is_dcp(&ecir_val) ? "DCP" : "SWP",
qm_ecir_get_pnum(&ecir_val));
}
if (ecsr_val & FQID_ECSR_ERR)
dev_warn(dev, "ErrInt: ecir.fqid 0x%x\n",
qm_ecir_get_fqid(&ecir_val));
if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) {
eadr_val.info = qm_ccsr_in(REG_EADR);
memid = qm_eadr_get_memid(&eadr_val);
dev_warn(dev, "ErrInt: EADR Memory: %s, 0x%x\n",
error_mdata[memid].txt,
error_mdata[memid].addr_mask
& qm_eadr_get_eadr(&eadr_val));
log_edata_bits(dev, error_mdata[memid].bits);
}
}
}
static irqreturn_t qman_isr(int irq, void *ptr)
{
u32 isr_val, ier_val, ecsr_val, isr_mask, i;
struct device *dev = ptr;
ier_val = qm_ccsr_in(REG_ERR_IER);
isr_val = qm_ccsr_in(REG_ERR_ISR);
ecsr_val = qm_ccsr_in(REG_ECSR);
isr_mask = isr_val & ier_val;
if (!isr_mask)
return IRQ_NONE;
for (i = 0; i < ARRAY_SIZE(qman_hwerr_txts); i++) {
if (qman_hwerr_txts[i].mask & isr_mask) {
dev_err_ratelimited(dev, "ErrInt: %s\n",
qman_hwerr_txts[i].txt);
if (qman_hwerr_txts[i].mask & ecsr_val) {
log_additional_error_info(dev, isr_mask,
ecsr_val);
/* Re-arm error capture registers */
qm_ccsr_out(REG_ECSR, ecsr_val);
}
if (qman_hwerr_txts[i].mask & QMAN_ERRS_TO_DISABLE) {
dev_dbg(dev, "Disabling error 0x%x\n",
qman_hwerr_txts[i].mask);
ier_val &= ~qman_hwerr_txts[i].mask;
qm_ccsr_out(REG_ERR_IER, ier_val);
}
}
}
qm_ccsr_out(REG_ERR_ISR, isr_val);
return IRQ_HANDLED;
}
static int qman_init_ccsr(struct device *dev)
{
int i, err;
/* FQD memory */
err = qm_set_memory(qm_memory_fqd, fqd_a, fqd_sz);
if (err < 0)
return err;
/* PFDR memory */
err = qm_set_memory(qm_memory_pfdr, pfdr_a, pfdr_sz);
if (err < 0)
return err;
/* Only initialize PFDRs if the QMan was not initialized before */
if (err == 0) {
err = qm_init_pfdr(dev, 8, pfdr_sz / 64 - 8);
if (err)
return err;
}
/* thresholds */
qm_set_pfdr_threshold(512, 64);
qm_set_sfdr_threshold(128);
/* clear stale PEBI bit from interrupt status register */
qm_ccsr_out(REG_ERR_ISR, QM_EIRQ_PEBI);
/* corenet initiator settings */
qm_set_corenet_initiator();
/* HID settings */
qm_set_hid();
/* Set scheduling weights to defaults */
for (i = qm_wq_first; i <= qm_wq_last; i++)
qm_set_wq_scheduling(i, 0, 0, 0, 0, 0, 0, 0);
/* We are not prepared to accept ERNs for hardware enqueues */
qm_set_dc(qm_dc_portal_fman0, 1, 0);
qm_set_dc(qm_dc_portal_fman1, 1, 0);
return 0;
}
#define LIO_CFG_LIODN_MASK 0x0fff0000
void __qman_liodn_fixup(u16 channel)
{
static int done;
static u32 liodn_offset;
u32 before, after;
int idx = channel - QM_CHANNEL_SWPORTAL0;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
before = qm_ccsr_in(REG_REV3_QCSP_LIO_CFG(idx));
else
before = qm_ccsr_in(REG_QCSP_LIO_CFG(idx));
if (!done) {
liodn_offset = before & LIO_CFG_LIODN_MASK;
done = 1;
return;
}
after = (before & (~LIO_CFG_LIODN_MASK)) | liodn_offset;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
qm_ccsr_out(REG_REV3_QCSP_LIO_CFG(idx), after);
else
qm_ccsr_out(REG_QCSP_LIO_CFG(idx), after);
}
#define IO_CFG_SDEST_MASK 0x00ff0000
void qman_set_sdest(u16 channel, unsigned int cpu_idx)
{
int idx = channel - QM_CHANNEL_SWPORTAL0;
u32 before, after;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) {
before = qm_ccsr_in(REG_REV3_QCSP_IO_CFG(idx));
/* Each pair of vcpu share the same SRQ(SDEST) */
cpu_idx /= 2;
after = (before & (~IO_CFG_SDEST_MASK)) | (cpu_idx << 16);
qm_ccsr_out(REG_REV3_QCSP_IO_CFG(idx), after);
} else {
before = qm_ccsr_in(REG_QCSP_IO_CFG(idx));
after = (before & (~IO_CFG_SDEST_MASK)) | (cpu_idx << 16);
qm_ccsr_out(REG_QCSP_IO_CFG(idx), after);
}
}
static int qman_resource_init(struct device *dev)
{
int pool_chan_num, cgrid_num;
int ret, i;
switch (qman_ip_rev >> 8) {
case 1:
pool_chan_num = 15;
cgrid_num = 256;
break;
case 2:
pool_chan_num = 3;
cgrid_num = 64;
break;
case 3:
pool_chan_num = 15;
cgrid_num = 256;
break;
default:
return -ENODEV;
}
ret = gen_pool_add(qm_qpalloc, qm_channel_pool1 | DPAA_GENALLOC_OFF,
pool_chan_num, -1);
if (ret) {
dev_err(dev, "Failed to seed pool channels (%d)\n", ret);
return ret;
}
ret = gen_pool_add(qm_cgralloc, DPAA_GENALLOC_OFF, cgrid_num, -1);
if (ret) {
dev_err(dev, "Failed to seed CGRID range (%d)\n", ret);
return ret;
}
/* parse pool channels into the SDQCR mask */
for (i = 0; i < cgrid_num; i++)
qm_pools_sdqcr |= QM_SDQCR_CHANNELS_POOL_CONV(i);
ret = gen_pool_add(qm_fqalloc, QM_FQID_RANGE_START | DPAA_GENALLOC_OFF,
qm_get_fqid_maxcnt() - QM_FQID_RANGE_START, -1);
if (ret) {
dev_err(dev, "Failed to seed FQID range (%d)\n", ret);
return ret;
}
return 0;
}
int qman_is_probed(void)
{
return __qman_probed;
}
EXPORT_SYMBOL_GPL(qman_is_probed);
int qman_requires_cleanup(void)
{
return __qman_requires_cleanup;
}
void qman_done_cleanup(void)
{
qman_enable_irqs();
__qman_requires_cleanup = 0;
}
static int fsl_qman_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct resource *res;
int ret, err_irq;
u16 id;
u8 major, minor;
__qman_probed = -1;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "Can't get %pOF property 'IORESOURCE_MEM'\n",
node);
return -ENXIO;
}
qm_ccsr_start = devm_ioremap(dev, res->start, resource_size(res));
if (!qm_ccsr_start)
return -ENXIO;
qm_get_version(&id, &major, &minor);
if (major == 1 && minor == 0) {
dev_err(dev, "Rev1.0 on P4080 rev1 is not supported!\n");
return -ENODEV;
} else if (major == 1 && minor == 1)
qman_ip_rev = QMAN_REV11;
else if (major == 1 && minor == 2)
qman_ip_rev = QMAN_REV12;
else if (major == 2 && minor == 0)
qman_ip_rev = QMAN_REV20;
else if (major == 3 && minor == 0)
qman_ip_rev = QMAN_REV30;
else if (major == 3 && minor == 1)
qman_ip_rev = QMAN_REV31;
else if (major == 3 && minor == 2)
qman_ip_rev = QMAN_REV32;
else {
dev_err(dev, "Unknown QMan version\n");
return -ENODEV;
}
if ((qman_ip_rev & 0xff00) >= QMAN_REV30) {
qm_channel_pool1 = QMAN_CHANNEL_POOL1_REV3;
qm_channel_caam = QMAN_CHANNEL_CAAM_REV3;
}
if (fqd_a) {
#ifdef CONFIG_PPC
/*
* For PPC backward DT compatibility
* FQD memory MUST be zero'd by software
*/
zero_priv_mem(fqd_a, fqd_sz);
#else
WARN(1, "Unexpected architecture using non shared-dma-mem reservations");
#endif
} else {
/*
* Order of memory regions is assumed as FQD followed by PFDR
* in order to ensure allocations from the correct regions the
* driver initializes then allocates each piece in order
*/
ret = qbman_init_private_mem(dev, 0, &fqd_a, &fqd_sz);
if (ret) {
dev_err(dev, "qbman_init_private_mem() for FQD failed 0x%x\n",
ret);
return -ENODEV;
}
}
dev_dbg(dev, "Allocated FQD 0x%llx 0x%zx\n", fqd_a, fqd_sz);
if (!pfdr_a) {
/* Setup PFDR memory */
ret = qbman_init_private_mem(dev, 1, &pfdr_a, &pfdr_sz);
if (ret) {
dev_err(dev, "qbman_init_private_mem() for PFDR failed 0x%x\n",
ret);
return -ENODEV;
}
}
dev_dbg(dev, "Allocated PFDR 0x%llx 0x%zx\n", pfdr_a, pfdr_sz);
ret = qman_init_ccsr(dev);
if (ret) {
dev_err(dev, "CCSR setup failed\n");
return ret;
}
err_irq = platform_get_irq(pdev, 0);
if (err_irq <= 0) {
dev_info(dev, "Can't get %pOF property 'interrupts'\n",
node);
return -ENODEV;
}
ret = devm_request_irq(dev, err_irq, qman_isr, IRQF_SHARED, "qman-err",
dev);
if (ret) {
dev_err(dev, "devm_request_irq() failed %d for '%pOF'\n",
ret, node);
return ret;
}
/*
* Write-to-clear any stale bits, (eg. starvation being asserted prior
* to resource allocation during driver init).
*/
qm_ccsr_out(REG_ERR_ISR, 0xffffffff);
/* Enable Error Interrupts */
qm_ccsr_out(REG_ERR_IER, 0xffffffff);
qm_fqalloc = devm_gen_pool_create(dev, 0, -1, "qman-fqalloc");
if (IS_ERR(qm_fqalloc)) {
ret = PTR_ERR(qm_fqalloc);
dev_err(dev, "qman-fqalloc pool init failed (%d)\n", ret);
return ret;
}
qm_qpalloc = devm_gen_pool_create(dev, 0, -1, "qman-qpalloc");
if (IS_ERR(qm_qpalloc)) {
ret = PTR_ERR(qm_qpalloc);
dev_err(dev, "qman-qpalloc pool init failed (%d)\n", ret);
return ret;
}
qm_cgralloc = devm_gen_pool_create(dev, 0, -1, "qman-cgralloc");
if (IS_ERR(qm_cgralloc)) {
ret = PTR_ERR(qm_cgralloc);
dev_err(dev, "qman-cgralloc pool init failed (%d)\n", ret);
return ret;
}
ret = qman_resource_init(dev);
if (ret)
return ret;
ret = qman_alloc_fq_table(qm_get_fqid_maxcnt());
if (ret)
return ret;
ret = qman_wq_alloc();
if (ret)
return ret;
__qman_probed = 1;
return 0;
}
static const struct of_device_id fsl_qman_ids[] = {
{
.compatible = "fsl,qman",
},
{}
};
static struct platform_driver fsl_qman_driver = {
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = fsl_qman_ids,
.suppress_bind_attrs = true,
},
.probe = fsl_qman_probe,
};
builtin_platform_driver(fsl_qman_driver);