driver/fsl-mc: Add support of MC Flibs
Freescale's Layerscape Management Complex (MC) provide support various
objects like DPRC, DPNI, DPBP and DPIO.
Where:
DPRC: Place holdes for other MC objectes like DPNI, DPBP, DPIO
DPBP: Management of buffer pool
DPIO: Used for used to QBMan portal
DPNI: Represents standard network interface
These objects are used for DPAA ethernet drivers.
Signed-off-by: J. German Rivera <German.Rivera@freescale.com>
Signed-off-by: Lijun Pan <Lijun.Pan@freescale.com>
Signed-off-by: Stuart Yoder <stuart.yoder@freescale.com>
Signed-off-by: Geoff Thorpe <Geoff.Thorpe@freescale.com>
Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com>
Signed-off-by: Cristian Sovaiala <cristian.sovaiala@freescale.com>
Signed-off-by: pankaj chauhan <pankaj.chauhan@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/drivers/net/fsl-mc/dpio/qbman_sys.h b/drivers/net/fsl-mc/dpio/qbman_sys.h
new file mode 100644
index 0000000..235d641
--- /dev/null
+++ b/drivers/net/fsl-mc/dpio/qbman_sys.h
@@ -0,0 +1,290 @@
+/*
+ * Copyright (C) 2014 Freescale Semiconductor
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+/* qbman_sys_decl.h and qbman_sys.h are the two platform-specific files in the
+ * driver. They are only included via qbman_private.h, which is itself a
+ * platform-independent file and is included by all the other driver source.
+ *
+ * qbman_sys_decl.h is included prior to all other declarations and logic, and
+ * it exists to provide compatibility with any linux interfaces our
+ * single-source driver code is dependent on (eg. kmalloc). Ie. this file
+ * provides linux compatibility.
+ *
+ * This qbman_sys.h header, on the other hand, is included *after* any common
+ * and platform-neutral declarations and logic in qbman_private.h, and exists to
+ * implement any platform-specific logic of the qbman driver itself. Ie. it is
+ * *not* to provide linux compatibility.
+ */
+
+/* Trace the 3 different classes of read/write access to QBMan. #undef as
+ * required. */
+#undef QBMAN_CCSR_TRACE
+#undef QBMAN_CINH_TRACE
+#undef QBMAN_CENA_TRACE
+
+/* Temporarily define this to get around the fact that cache enabled mapping is
+ * not working right now. Will remove this after uboot could map the cache
+ * enabled portal memory.
+ */
+#define QBMAN_CINH_ONLY
+
+static inline void word_copy(void *d, const void *s, unsigned int cnt)
+{
+ uint32_t *dd = d;
+ const uint32_t *ss = s;
+
+ while (cnt--)
+ *(dd++) = *(ss++);
+}
+
+/* Currently, the CENA support code expects each 32-bit word to be written in
+ * host order, and these are converted to hardware (little-endian) order on
+ * command submission. However, 64-bit quantities are must be written (and read)
+ * as two 32-bit words with the least-significant word first, irrespective of
+ * host endianness. */
+static inline void u64_to_le32_copy(void *d, const uint64_t *s,
+ unsigned int cnt)
+{
+ uint32_t *dd = d;
+ const uint32_t *ss = (const uint32_t *)s;
+
+ while (cnt--) {
+ /* TBD: the toolchain was choking on the use of 64-bit types up
+ * until recently so this works entirely with 32-bit variables.
+ * When 64-bit types become usable again, investigate better
+ * ways of doing this. */
+#if defined(__BIG_ENDIAN)
+ *(dd++) = ss[1];
+ *(dd++) = ss[0];
+ ss += 2;
+#else
+ *(dd++) = *(ss++);
+ *(dd++) = *(ss++);
+#endif
+ }
+}
+static inline void u64_from_le32_copy(uint64_t *d, const void *s,
+ unsigned int cnt)
+{
+ const uint32_t *ss = s;
+ uint32_t *dd = (uint32_t *)d;
+
+ while (cnt--) {
+#if defined(__BIG_ENDIAN)
+ dd[1] = *(ss++);
+ dd[0] = *(ss++);
+ dd += 2;
+#else
+ *(dd++) = *(ss++);
+ *(dd++) = *(ss++);
+#endif
+ }
+}
+
+/* Convert a host-native 32bit value into little endian */
+#if defined(__BIG_ENDIAN)
+static inline uint32_t make_le32(uint32_t val)
+{
+ return ((val & 0xff) << 24) | ((val & 0xff00) << 8) |
+ ((val & 0xff0000) >> 8) | ((val & 0xff000000) >> 24);
+}
+#else
+#define make_le32(val) (val)
+#endif
+static inline void make_le32_n(uint32_t *val, unsigned int num)
+{
+ while (num--) {
+ *val = make_le32(*val);
+ val++;
+ }
+}
+
+ /******************/
+ /* Portal access */
+ /******************/
+struct qbman_swp_sys {
+ /* On GPP, the sys support for qbman_swp is here. The CENA region isi
+ * not an mmap() of the real portal registers, but an allocated
+ * place-holder, because the actual writes/reads to/from the portal are
+ * marshalled from these allocated areas using QBMan's "MC access
+ * registers". CINH accesses are atomic so there's no need for a
+ * place-holder. */
+ void *cena;
+ void __iomem *addr_cena;
+ void __iomem *addr_cinh;
+};
+
+/* P_OFFSET is (ACCESS_CMD,0,12) - offset within the portal
+ * C is (ACCESS_CMD,12,1) - is inhibited? (0==CENA, 1==CINH)
+ * SWP_IDX is (ACCESS_CMD,16,10) - Software portal index
+ * P is (ACCESS_CMD,28,1) - (0==special portal, 1==any portal)
+ * T is (ACCESS_CMD,29,1) - Command type (0==READ, 1==WRITE)
+ * E is (ACCESS_CMD,31,1) - Command execute (1 to issue, poll for 0==complete)
+ */
+
+static inline void qbman_cinh_write(struct qbman_swp_sys *s, uint32_t offset,
+ uint32_t val)
+{
+ __raw_writel(val, s->addr_cinh + offset);
+#ifdef QBMAN_CINH_TRACE
+ pr_info("qbman_cinh_write(%p:0x%03x) 0x%08x\n",
+ s->addr_cinh, offset, val);
+#endif
+}
+
+static inline uint32_t qbman_cinh_read(struct qbman_swp_sys *s, uint32_t offset)
+{
+ uint32_t reg = __raw_readl(s->addr_cinh + offset);
+
+#ifdef QBMAN_CINH_TRACE
+ pr_info("qbman_cinh_read(%p:0x%03x) 0x%08x\n",
+ s->addr_cinh, offset, reg);
+#endif
+ return reg;
+}
+
+static inline void *qbman_cena_write_start(struct qbman_swp_sys *s,
+ uint32_t offset)
+{
+ void *shadow = s->cena + offset;
+
+#ifdef QBMAN_CENA_TRACE
+ pr_info("qbman_cena_write_start(%p:0x%03x) %p\n",
+ s->addr_cena, offset, shadow);
+#endif
+ BUG_ON(offset & 63);
+ dcbz(shadow);
+ return shadow;
+}
+
+static inline void qbman_cena_write_complete(struct qbman_swp_sys *s,
+ uint32_t offset, void *cmd)
+{
+ const uint32_t *shadow = cmd;
+ int loop;
+
+#ifdef QBMAN_CENA_TRACE
+ pr_info("qbman_cena_write_complete(%p:0x%03x) %p\n",
+ s->addr_cena, offset, shadow);
+ hexdump(cmd, 64);
+#endif
+ for (loop = 15; loop >= 0; loop--)
+#ifdef QBMAN_CINH_ONLY
+ __raw_writel(shadow[loop], s->addr_cinh +
+ offset + loop * 4);
+#else
+ __raw_writel(shadow[loop], s->addr_cena +
+ offset + loop * 4);
+#endif
+}
+
+static inline void *qbman_cena_read(struct qbman_swp_sys *s, uint32_t offset)
+{
+ uint32_t *shadow = s->cena + offset;
+ unsigned int loop;
+
+#ifdef QBMAN_CENA_TRACE
+ pr_info("qbman_cena_read(%p:0x%03x) %p\n",
+ s->addr_cena, offset, shadow);
+#endif
+
+ for (loop = 0; loop < 16; loop++)
+#ifdef QBMAN_CINH_ONLY
+ shadow[loop] = __raw_readl(s->addr_cinh + offset
+ + loop * 4);
+#else
+ shadow[loop] = __raw_readl(s->addr_cena + offset
+ + loop * 4);
+#endif
+#ifdef QBMAN_CENA_TRACE
+ hexdump(shadow, 64);
+#endif
+ return shadow;
+}
+
+static inline void qbman_cena_invalidate_prefetch(struct qbman_swp_sys *s,
+ uint32_t offset)
+{
+}
+
+ /******************/
+ /* Portal support */
+ /******************/
+
+/* The SWP_CFG portal register is special, in that it is used by the
+ * platform-specific code rather than the platform-independent code in
+ * qbman_portal.c. So use of it is declared locally here. */
+#define QBMAN_CINH_SWP_CFG 0xd00
+
+/* For MC portal use, we always configure with
+ * DQRR_MF is (SWP_CFG,20,3) - DQRR max fill (<- 0x4)
+ * EST is (SWP_CFG,16,3) - EQCR_CI stashing threshold (<- 0x0)
+ * RPM is (SWP_CFG,12,2) - RCR production notification mode (<- 0x3)
+ * DCM is (SWP_CFG,10,2) - DQRR consumption notification mode (<- 0x2)
+ * EPM is (SWP_CFG,8,2) - EQCR production notification mode (<- 0x3)
+ * SD is (SWP_CFG,5,1) - memory stashing drop enable (<- FALSE)
+ * SP is (SWP_CFG,4,1) - memory stashing priority (<- TRUE)
+ * SE is (SWP_CFG,3,1) - memory stashing enable (<- 0x0)
+ * DP is (SWP_CFG,2,1) - dequeue stashing priority (<- TRUE)
+ * DE is (SWP_CFG,1,1) - dequeue stashing enable (<- 0x0)
+ * EP is (SWP_CFG,0,1) - EQCR_CI stashing priority (<- FALSE)
+ */
+static inline uint32_t qbman_set_swp_cfg(uint8_t max_fill, uint8_t wn,
+ uint8_t est, uint8_t rpm, uint8_t dcm,
+ uint8_t epm, int sd, int sp, int se,
+ int dp, int de, int ep)
+{
+ uint32_t reg;
+
+ reg = e32_uint8_t(20, 3, max_fill) | e32_uint8_t(16, 3, est) |
+ e32_uint8_t(12, 2, rpm) | e32_uint8_t(10, 2, dcm) |
+ e32_uint8_t(8, 2, epm) | e32_int(5, 1, sd) |
+ e32_int(4, 1, sp) | e32_int(3, 1, se) | e32_int(2, 1, dp) |
+ e32_int(1, 1, de) | e32_int(0, 1, ep) | e32_uint8_t(14, 1, wn);
+ return reg;
+}
+
+static inline int qbman_swp_sys_init(struct qbman_swp_sys *s,
+ const struct qbman_swp_desc *d)
+{
+ uint32_t reg;
+
+ s->addr_cena = d->cena_bar;
+ s->addr_cinh = d->cinh_bar;
+ s->cena = (void *)valloc(CONFIG_SYS_PAGE_SIZE);
+ memset((void *)s->cena, 0x00, CONFIG_SYS_PAGE_SIZE);
+ if (!s->cena) {
+ printf("Could not allocate page for cena shadow\n");
+ return -1;
+ }
+
+#ifdef QBMAN_CHECKING
+ /* We should never be asked to initialise for a portal that isn't in
+ * the power-on state. (Ie. don't forget to reset portals when they are
+ * decommissioned!)
+ */
+ reg = qbman_cinh_read(s, QBMAN_CINH_SWP_CFG);
+ BUG_ON(reg);
+#endif
+#ifdef QBMAN_CINH_ONLY
+ reg = qbman_set_swp_cfg(4, 1, 0, 3, 2, 3, 0, 1, 0, 1, 0, 0);
+#else
+ reg = qbman_set_swp_cfg(4, 0, 0, 3, 2, 3, 0, 1, 0, 1, 0, 0);
+#endif
+ qbman_cinh_write(s, QBMAN_CINH_SWP_CFG, reg);
+ reg = qbman_cinh_read(s, QBMAN_CINH_SWP_CFG);
+ if (!reg) {
+ printf("The portal is not enabled!\n");
+ free(s->cena);
+ return -1;
+ }
+ return 0;
+}
+
+static inline void qbman_swp_sys_finish(struct qbman_swp_sys *s)
+{
+ free((void *)s->cena);
+}