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-rw-r--r--arch/mips/cavium-octeon/executive/Makefile1
-rw-r--r--arch/mips/cavium-octeon/executive/cvmx-bootmem.c104
-rw-r--r--arch/mips/cavium-octeon/executive/cvmx-helper-errata.c73
-rw-r--r--arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c144
-rw-r--r--arch/mips/cavium-octeon/executive/cvmx-sysinfo.c2
5 files changed, 324 insertions, 0 deletions
diff --git a/arch/mips/cavium-octeon/executive/Makefile b/arch/mips/cavium-octeon/executive/Makefile
index 80d6cb26766..2fd66db6939 100644
--- a/arch/mips/cavium-octeon/executive/Makefile
+++ b/arch/mips/cavium-octeon/executive/Makefile
@@ -11,3 +11,4 @@
obj-y += cvmx-bootmem.o cvmx-l2c.o cvmx-sysinfo.o octeon-model.o
+obj-$(CONFIG_PCI) += cvmx-helper-errata.o cvmx-helper-jtag.o
diff --git a/arch/mips/cavium-octeon/executive/cvmx-bootmem.c b/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
index 4f5a08b37cc..25666da17b2 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-bootmem.c
@@ -31,6 +31,7 @@
*/
#include <linux/kernel.h>
+#include <linux/module.h>
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-spinlock.h>
@@ -97,6 +98,33 @@ void *cvmx_bootmem_alloc(uint64_t size, uint64_t alignment)
return cvmx_bootmem_alloc_range(size, alignment, 0, 0);
}
+void *cvmx_bootmem_alloc_named_range(uint64_t size, uint64_t min_addr,
+ uint64_t max_addr, uint64_t align,
+ char *name)
+{
+ int64_t addr;
+
+ addr = cvmx_bootmem_phy_named_block_alloc(size, min_addr, max_addr,
+ align, name, 0);
+ if (addr >= 0)
+ return cvmx_phys_to_ptr(addr);
+ else
+ return NULL;
+}
+
+void *cvmx_bootmem_alloc_named_address(uint64_t size, uint64_t address,
+ char *name)
+{
+ return cvmx_bootmem_alloc_named_range(size, address, address + size,
+ 0, name);
+}
+
+void *cvmx_bootmem_alloc_named(uint64_t size, uint64_t alignment, char *name)
+{
+ return cvmx_bootmem_alloc_named_range(size, 0, 0, alignment, name);
+}
+EXPORT_SYMBOL(cvmx_bootmem_alloc_named);
+
int cvmx_bootmem_free_named(char *name)
{
return cvmx_bootmem_phy_named_block_free(name, 0);
@@ -106,6 +134,7 @@ struct cvmx_bootmem_named_block_desc *cvmx_bootmem_find_named_block(char *name)
{
return cvmx_bootmem_phy_named_block_find(name, 0);
}
+EXPORT_SYMBOL(cvmx_bootmem_find_named_block);
void cvmx_bootmem_lock(void)
{
@@ -584,3 +613,78 @@ int cvmx_bootmem_phy_named_block_free(char *name, uint32_t flags)
cvmx_bootmem_unlock();
return named_block_ptr != NULL; /* 0 on failure, 1 on success */
}
+
+int64_t cvmx_bootmem_phy_named_block_alloc(uint64_t size, uint64_t min_addr,
+ uint64_t max_addr,
+ uint64_t alignment,
+ char *name,
+ uint32_t flags)
+{
+ int64_t addr_allocated;
+ struct cvmx_bootmem_named_block_desc *named_block_desc_ptr;
+
+#ifdef DEBUG
+ cvmx_dprintf("cvmx_bootmem_phy_named_block_alloc: size: 0x%llx, min: "
+ "0x%llx, max: 0x%llx, align: 0x%llx, name: %s\n",
+ (unsigned long long)size,
+ (unsigned long long)min_addr,
+ (unsigned long long)max_addr,
+ (unsigned long long)alignment,
+ name);
+#endif
+ if (cvmx_bootmem_desc->major_version != 3) {
+ cvmx_dprintf("ERROR: Incompatible bootmem descriptor version: "
+ "%d.%d at addr: %p\n",
+ (int)cvmx_bootmem_desc->major_version,
+ (int)cvmx_bootmem_desc->minor_version,
+ cvmx_bootmem_desc);
+ return -1;
+ }
+
+ /*
+ * Take lock here, as name lookup/block alloc/name add need to
+ * be atomic.
+ */
+ if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+ cvmx_spinlock_lock((cvmx_spinlock_t *)&(cvmx_bootmem_desc->lock));
+
+ /* Get pointer to first available named block descriptor */
+ named_block_desc_ptr =
+ cvmx_bootmem_phy_named_block_find(NULL,
+ flags | CVMX_BOOTMEM_FLAG_NO_LOCKING);
+
+ /*
+ * Check to see if name already in use, return error if name
+ * not available or no more room for blocks.
+ */
+ if (cvmx_bootmem_phy_named_block_find(name,
+ flags | CVMX_BOOTMEM_FLAG_NO_LOCKING) || !named_block_desc_ptr) {
+ if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+ cvmx_spinlock_unlock((cvmx_spinlock_t *)&(cvmx_bootmem_desc->lock));
+ return -1;
+ }
+
+
+ /*
+ * Round size up to mult of minimum alignment bytes We need
+ * the actual size allocated to allow for blocks to be
+ * coallesced when they are freed. The alloc routine does the
+ * same rounding up on all allocations.
+ */
+ size = __ALIGN_MASK(size, (CVMX_BOOTMEM_ALIGNMENT_SIZE - 1));
+
+ addr_allocated = cvmx_bootmem_phy_alloc(size, min_addr, max_addr,
+ alignment,
+ flags | CVMX_BOOTMEM_FLAG_NO_LOCKING);
+ if (addr_allocated >= 0) {
+ named_block_desc_ptr->base_addr = addr_allocated;
+ named_block_desc_ptr->size = size;
+ strncpy(named_block_desc_ptr->name, name,
+ cvmx_bootmem_desc->named_block_name_len);
+ named_block_desc_ptr->name[cvmx_bootmem_desc->named_block_name_len - 1] = 0;
+ }
+
+ if (!(flags & CVMX_BOOTMEM_FLAG_NO_LOCKING))
+ cvmx_spinlock_unlock((cvmx_spinlock_t *)&(cvmx_bootmem_desc->lock));
+ return addr_allocated;
+}
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-errata.c b/arch/mips/cavium-octeon/executive/cvmx-helper-errata.c
new file mode 100644
index 00000000000..868659e64d4
--- /dev/null
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-errata.c
@@ -0,0 +1,73 @@
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/**
+ *
+ * Fixes and workaround for Octeon chip errata. This file
+ * contains functions called by cvmx-helper to workaround known
+ * chip errata. For the most part, code doesn't need to call
+ * these functions directly.
+ *
+ */
+#include <linux/module.h>
+
+#include <asm/octeon/octeon.h>
+
+#include <asm/octeon/cvmx-helper-jtag.h>
+
+/**
+ * Due to errata G-720, the 2nd order CDR circuit on CN52XX pass
+ * 1 doesn't work properly. The following code disables 2nd order
+ * CDR for the specified QLM.
+ *
+ * @qlm: QLM to disable 2nd order CDR for.
+ */
+void __cvmx_helper_errata_qlm_disable_2nd_order_cdr(int qlm)
+{
+ int lane;
+ cvmx_helper_qlm_jtag_init();
+ /* We need to load all four lanes of the QLM, a total of 1072 bits */
+ for (lane = 0; lane < 4; lane++) {
+ /*
+ * Each lane has 268 bits. We need to set
+ * cfg_cdr_incx<67:64> = 3 and cfg_cdr_secord<77> =
+ * 1. All other bits are zero. Bits go in LSB first,
+ * so start off with the zeros for bits <63:0>.
+ */
+ cvmx_helper_qlm_jtag_shift_zeros(qlm, 63 - 0 + 1);
+ /* cfg_cdr_incx<67:64>=3 */
+ cvmx_helper_qlm_jtag_shift(qlm, 67 - 64 + 1, 3);
+ /* Zeros for bits <76:68> */
+ cvmx_helper_qlm_jtag_shift_zeros(qlm, 76 - 68 + 1);
+ /* cfg_cdr_secord<77>=1 */
+ cvmx_helper_qlm_jtag_shift(qlm, 77 - 77 + 1, 1);
+ /* Zeros for bits <267:78> */
+ cvmx_helper_qlm_jtag_shift_zeros(qlm, 267 - 78 + 1);
+ }
+ cvmx_helper_qlm_jtag_update(qlm);
+}
+EXPORT_SYMBOL(__cvmx_helper_errata_qlm_disable_2nd_order_cdr);
diff --git a/arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c b/arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c
new file mode 100644
index 00000000000..c1c54890bae
--- /dev/null
+++ b/arch/mips/cavium-octeon/executive/cvmx-helper-jtag.c
@@ -0,0 +1,144 @@
+
+/***********************license start***************
+ * Author: Cavium Networks
+ *
+ * Contact: support@caviumnetworks.com
+ * This file is part of the OCTEON SDK
+ *
+ * Copyright (c) 2003-2008 Cavium Networks
+ *
+ * This file is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, Version 2, as
+ * published by the Free Software Foundation.
+ *
+ * This file is distributed in the hope that it will be useful, but
+ * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
+ * NONINFRINGEMENT. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this file; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * or visit http://www.gnu.org/licenses/.
+ *
+ * This file may also be available under a different license from Cavium.
+ * Contact Cavium Networks for more information
+ ***********************license end**************************************/
+
+/**
+ *
+ * Helper utilities for qlm_jtag.
+ *
+ */
+
+#include <asm/octeon/octeon.h>
+#include <asm/octeon/cvmx-helper-jtag.h>
+
+
+/**
+ * Initialize the internal QLM JTAG logic to allow programming
+ * of the JTAG chain by the cvmx_helper_qlm_jtag_*() functions.
+ * These functions should only be used at the direction of Cavium
+ * Networks. Programming incorrect values into the JTAG chain
+ * can cause chip damage.
+ */
+void cvmx_helper_qlm_jtag_init(void)
+{
+ union cvmx_ciu_qlm_jtgc jtgc;
+ uint32_t clock_div = 0;
+ uint32_t divisor = cvmx_sysinfo_get()->cpu_clock_hz / (25 * 1000000);
+ divisor = (divisor - 1) >> 2;
+ /* Convert the divisor into a power of 2 shift */
+ while (divisor) {
+ clock_div++;
+ divisor = divisor >> 1;
+ }
+
+ /*
+ * Clock divider for QLM JTAG operations. eclk is divided by
+ * 2^(CLK_DIV + 2)
+ */
+ jtgc.u64 = 0;
+ jtgc.s.clk_div = clock_div;
+ jtgc.s.mux_sel = 0;
+ if (OCTEON_IS_MODEL(OCTEON_CN52XX))
+ jtgc.s.bypass = 0x3;
+ else
+ jtgc.s.bypass = 0xf;
+ cvmx_write_csr(CVMX_CIU_QLM_JTGC, jtgc.u64);
+ cvmx_read_csr(CVMX_CIU_QLM_JTGC);
+}
+
+/**
+ * Write up to 32bits into the QLM jtag chain. Bits are shifted
+ * into the MSB and out the LSB, so you should shift in the low
+ * order bits followed by the high order bits. The JTAG chain is
+ * 4 * 268 bits long, or 1072.
+ *
+ * @qlm: QLM to shift value into
+ * @bits: Number of bits to shift in (1-32).
+ * @data: Data to shift in. Bit 0 enters the chain first, followed by
+ * bit 1, etc.
+ *
+ * Returns The low order bits of the JTAG chain that shifted out of the
+ * circle.
+ */
+uint32_t cvmx_helper_qlm_jtag_shift(int qlm, int bits, uint32_t data)
+{
+ union cvmx_ciu_qlm_jtgd jtgd;
+ jtgd.u64 = 0;
+ jtgd.s.shift = 1;
+ jtgd.s.shft_cnt = bits - 1;
+ jtgd.s.shft_reg = data;
+ if (!OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X))
+ jtgd.s.select = 1 << qlm;
+ cvmx_write_csr(CVMX_CIU_QLM_JTGD, jtgd.u64);
+ do {
+ jtgd.u64 = cvmx_read_csr(CVMX_CIU_QLM_JTGD);
+ } while (jtgd.s.shift);
+ return jtgd.s.shft_reg >> (32 - bits);
+}
+
+/**
+ * Shift long sequences of zeros into the QLM JTAG chain. It is
+ * common to need to shift more than 32 bits of zeros into the
+ * chain. This function is a convience wrapper around
+ * cvmx_helper_qlm_jtag_shift() to shift more than 32 bits of
+ * zeros at a time.
+ *
+ * @qlm: QLM to shift zeros into
+ * @bits:
+ */
+void cvmx_helper_qlm_jtag_shift_zeros(int qlm, int bits)
+{
+ while (bits > 0) {
+ int n = bits;
+ if (n > 32)
+ n = 32;
+ cvmx_helper_qlm_jtag_shift(qlm, n, 0);
+ bits -= n;
+ }
+}
+
+/**
+ * Program the QLM JTAG chain into all lanes of the QLM. You must
+ * have already shifted in 268*4, or 1072 bits into the JTAG
+ * chain. Updating invalid values can possibly cause chip damage.
+ *
+ * @qlm: QLM to program
+ */
+void cvmx_helper_qlm_jtag_update(int qlm)
+{
+ union cvmx_ciu_qlm_jtgd jtgd;
+
+ /* Update the new data */
+ jtgd.u64 = 0;
+ jtgd.s.update = 1;
+ if (!OCTEON_IS_MODEL(OCTEON_CN56XX_PASS1_X))
+ jtgd.s.select = 1 << qlm;
+ cvmx_write_csr(CVMX_CIU_QLM_JTGD, jtgd.u64);
+ do {
+ jtgd.u64 = cvmx_read_csr(CVMX_CIU_QLM_JTGD);
+ } while (jtgd.s.update);
+}
diff --git a/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c b/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c
index 4812370706a..e5838890cba 100644
--- a/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c
+++ b/arch/mips/cavium-octeon/executive/cvmx-sysinfo.c
@@ -29,6 +29,7 @@
* This module provides system/board/application information obtained
* by the bootloader.
*/
+#include <linux/module.h>
#include <asm/octeon/cvmx.h>
#include <asm/octeon/cvmx-spinlock.h>
@@ -69,6 +70,7 @@ struct cvmx_sysinfo *cvmx_sysinfo_get(void)
{
return &(state.sysinfo);
}
+EXPORT_SYMBOL(cvmx_sysinfo_get);
/**
* This function is used in non-simple executive environments (such as