diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/soc/fsl/qbman/qman_ccsr.c | 861 |
1 files changed, 861 insertions, 0 deletions
diff --git a/drivers/soc/fsl/qbman/qman_ccsr.c b/drivers/soc/fsl/qbman/qman_ccsr.c new file mode 100644 index 000000000..6fd5fef5f --- /dev/null +++ b/drivers/soc/fsl/qbman/qman_ccsr.c @@ -0,0 +1,861 @@ +/* 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 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 void qm_set_memory(enum qm_memory memory, u64 ba, u32 size) +{ + u32 offset = (memory == qm_memory_fqd) ? REG_FQD_BARE : REG_PFDR_BARE; + u32 exp = ilog2(size); + + /* 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))); + 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)); +} + +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_prot(addr, sz, 0); + + 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 + +static 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 */ + qm_set_memory(qm_memory_fqd, fqd_a, fqd_sz); + /* PFDR memory */ + qm_set_memory(qm_memory_pfdr, pfdr_a, pfdr_sz); + 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); + +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); |