From: Arvind Bhushan <arvindb@xxxxxxxxxxx>
This patch creates a new file for T5 adapter operations.
Signed-off-by: Arvind Bhushan <arvindb@xxxxxxxxxxx>
Signed-off-by: Naresh Kumar Inna <naresh@xxxxxxxxxxx>
---
drivers/scsi/csiostor/csio_hw_t5.c | 397 ++++++++++++++++++++++++++++++++++++
1 files changed, 397 insertions(+), 0 deletions(-)
create mode 100644 drivers/scsi/csiostor/csio_hw_t5.c
diff --git a/drivers/scsi/csiostor/csio_hw_t5.c b/drivers/scsi/csiostor/csio_hw_t5.c
new file mode 100644
index 0000000..27745c1
--- /dev/null
+++ b/drivers/scsi/csiostor/csio_hw_t5.c
@@ -0,0 +1,397 @@
+/*
+ * This file is part of the Chelsio FCoE driver for Linux.
+ *
+ * Copyright (c) 2008-2013 Chelsio Communications, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * OpenIB.org BSD license below:
+ *
+ * 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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "csio_hw.h"
+#include "csio_init.h"
+
+static int
+csio_t5_set_mem_win(struct csio_hw *hw, uint32_t win)
+{
+ u32 mem_win_base;
+ /*
+ * Truncation intentional: we only read the bottom 32-bits of the
+ * 64-bit BAR0/BAR1 ... We use the hardware backdoor mechanism to
+ * read BAR0 instead of using pci_resource_start() because we could be
+ * operating from within a Virtual Machine which is trapping our
+ * accesses to our Configuration Space and we need to set up the PCI-E
+ * Memory Window decoders with the actual addresses which will be
+ * coming across the PCI-E link.
+ */
+
+ /* For T5, only relative offset inside the PCIe BAR is passed */
+ mem_win_base = MEMWIN_BASE;
+
+ /*
+ * Set up memory window for accessing adapter memory ranges. (Read
+ * back MA register to ensure that changes propagate before we attempt
+ * to use the new values.)
+ */
+ csio_wr_reg32(hw, mem_win_base | BIR(0) |
+ WINDOW(ilog2(MEMWIN_APERTURE) - 10),
+ PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, win));
+ csio_rd_reg32(hw,
+ PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, win));
+
+ return 0;
+}
+
+/*
+ * Interrupt handler for the PCIE module.
+ */
+static void
+csio_t5_pcie_intr_handler(struct csio_hw *hw)
+{
+ static struct intr_info sysbus_intr_info[] = {
+ { RNPP, "RXNP array parity error", -1, 1 },
+ { RPCP, "RXPC array parity error", -1, 1 },
+ { RCIP, "RXCIF array parity error", -1, 1 },
+ { RCCP, "Rx completions control array parity error", -1, 1 },
+ { RFTP, "RXFT array parity error", -1, 1 },
+ { 0, NULL, 0, 0 }
+ };
+ static struct intr_info pcie_port_intr_info[] = {
+ { TPCP, "TXPC array parity error", -1, 1 },
+ { TNPP, "TXNP array parity error", -1, 1 },
+ { TFTP, "TXFT array parity error", -1, 1 },
+ { TCAP, "TXCA array parity error", -1, 1 },
+ { TCIP, "TXCIF array parity error", -1, 1 },
+ { RCAP, "RXCA array parity error", -1, 1 },
+ { OTDD, "outbound request TLP discarded", -1, 1 },
+ { RDPE, "Rx data parity error", -1, 1 },
+ { TDUE, "Tx uncorrectable data error", -1, 1 },
+ { 0, NULL, 0, 0 }
+ };
+
+ static struct intr_info pcie_intr_info[] = {
+ { MSTGRPPERR, "Master Response Read Queue parity error",
+ -1, 1 },
+ { MSTTIMEOUTPERR, "Master Timeout FIFO parity error", -1, 1 },
+ { MSIXSTIPERR, "MSI-X STI SRAM parity error", -1, 1 },
+ { MSIXADDRLPERR, "MSI-X AddrL parity error", -1, 1 },
+ { MSIXADDRHPERR, "MSI-X AddrH parity error", -1, 1 },
+ { MSIXDATAPERR, "MSI-X data parity error", -1, 1 },
+ { MSIXDIPERR, "MSI-X DI parity error", -1, 1 },
+ { PIOCPLGRPPERR, "PCI PIO completion Group FIFO parity error",
+ -1, 1 },
+ { PIOREQGRPPERR, "PCI PIO request Group FIFO parity error",
+ -1, 1 },
+ { TARTAGPERR, "PCI PCI target tag FIFO parity error", -1, 1 },
+ { MSTTAGQPERR, "PCI master tag queue parity error", -1, 1 },
+ { CREQPERR, "PCI CMD channel request parity error", -1, 1 },
+ { CRSPPERR, "PCI CMD channel response parity error", -1, 1 },
+ { DREQWRPERR, "PCI DMA channel write request parity error",
+ -1, 1 },
+ { DREQPERR, "PCI DMA channel request parity error", -1, 1 },
+ { DRSPPERR, "PCI DMA channel response parity error", -1, 1 },
+ { HREQWRPERR, "PCI HMA channel count parity error", -1, 1 },
+ { HREQPERR, "PCI HMA channel request parity error", -1, 1 },
+ { HRSPPERR, "PCI HMA channel response parity error", -1, 1 },
+ { CFGSNPPERR, "PCI config snoop FIFO parity error", -1, 1 },
+ { FIDPERR, "PCI FID parity error", -1, 1 },
+ { VFIDPERR, "PCI INTx clear parity error", -1, 1 },
+ { MAGRPPERR, "PCI MA group FIFO parity error", -1, 1 },
+ { PIOTAGPERR, "PCI PIO tag parity error", -1, 1 },
+ { IPRXHDRGRPPERR, "PCI IP Rx header group parity error",
+ -1, 1 },
+ { IPRXDATAGRPPERR, "PCI IP Rx data group parity error",
+ -1, 1 },
+ { RPLPERR, "PCI IP replay buffer parity error", -1, 1 },
+ { IPSOTPERR, "PCI IP SOT buffer parity error", -1, 1 },
+ { TRGT1GRPPERR, "PCI TRGT1 group FIFOs parity error", -1, 1 },
+ { READRSPERR, "Outbound read error", -1, 0 },
+ { 0, NULL, 0, 0 }
+ };
+
+ int fat;
+ fat = csio_handle_intr_status(hw,
+ PCIE_CORE_UTL_SYSTEM_BUS_AGENT_STATUS,
+ sysbus_intr_info) +
+ csio_handle_intr_status(hw,
+ PCIE_CORE_UTL_PCI_EXPRESS_PORT_STATUS,
+ pcie_port_intr_info) +
+ csio_handle_intr_status(hw, PCIE_INT_CAUSE, pcie_intr_info);
+ if (fat)
+ csio_hw_fatal_err(hw);
+}
+
+/*
+ * csio_t5_flash_cfg_addr - return the address of the flash configuration file
+ * @hw: the HW module
+ *
+ * Return the address within the flash where the Firmware Configuration
+ * File is stored.
+ */
+static unsigned int
+csio_t5_flash_cfg_addr(struct csio_hw *hw)
+{
+ return FLASH_CFG_START;
+}
+
+/*
+ * csio_t5_mc_read - read from MC through backdoor accesses
+ * @hw: the hw module
+ * @idx: index to the register
+ * @addr: address of first byte requested
+ * @data: 64 bytes of data containing the requested address
+ * @ecc: where to store the corresponding 64-bit ECC word
+ *
+ * Read 64 bytes of data from MC starting at a 64-byte-aligned address
+ * that covers the requested address @addr. If @parity is not %NULL it
+ * is assigned the 64-bit ECC word for the read data.
+ */
+static int
+csio_t5_mc_read(struct csio_hw *hw, int idx, uint32_t addr, __be32 *data,
+ uint64_t *ecc)
+{
+ int i;
+ uint32_t mc_bist_cmd_reg, mc_bist_cmd_addr_reg, mc_bist_cmd_len_reg;
+ uint32_t mc_bist_status_rdata_reg, mc_bist_data_pattern_reg;
+
+ mc_bist_cmd_reg = MC_REG(MC_P_BIST_CMD, idx);
+ mc_bist_cmd_addr_reg = MC_REG(MC_P_BIST_CMD_ADDR, idx);
+ mc_bist_cmd_len_reg = MC_REG(MC_P_BIST_CMD_LEN, idx);
+ mc_bist_status_rdata_reg = MC_REG(MC_P_BIST_STATUS_RDATA, idx);
+ mc_bist_data_pattern_reg = MC_REG(MC_P_BIST_DATA_PATTERN, idx);
+
+ if (csio_rd_reg32(hw, mc_bist_cmd_reg) & START_BIST)
+ return -EBUSY;
+ csio_wr_reg32(hw, addr & ~0x3fU, mc_bist_cmd_addr_reg);
+ csio_wr_reg32(hw, 64, mc_bist_cmd_len_reg);
+ csio_wr_reg32(hw, 0xc, mc_bist_data_pattern_reg);
+ csio_wr_reg32(hw, BIST_OPCODE(1) | START_BIST | BIST_CMD_GAP(1),
+ mc_bist_cmd_reg);
+ i = csio_hw_wait_op_done_val(hw, mc_bist_cmd_reg, START_BIST,
+ 0, 10, 1, NULL);
+ if (i)
+ return i;
+
+#define MC_DATA(i) MC_BIST_STATUS_REG(MC_BIST_STATUS_RDATA, i)
+
+ for (i = 15; i >= 0; i--)
+ *data++ = htonl(csio_rd_reg32(hw, MC_DATA(i)));
+ if (ecc)
+ *ecc = csio_rd_reg64(hw, MC_DATA(16));
+#undef MC_DATA
+ return 0;
+}
+
+/*
+ * csio_t5_edc_read - read from EDC through backdoor accesses
+ * @hw: the hw module
+ * @idx: which EDC to access
+ * @addr: address of first byte requested
+ * @data: 64 bytes of data containing the requested address
+ * @ecc: where to store the corresponding 64-bit ECC word
+ *
+ * Read 64 bytes of data from EDC starting at a 64-byte-aligned address
+ * that covers the requested address @addr. If @parity is not %NULL it
+ * is assigned the 64-bit ECC word for the read data.
+ */
+static int
+csio_t5_edc_read(struct csio_hw *hw, int idx, uint32_t addr, __be32 *data,
+ uint64_t *ecc)
+{
+ int i;
+ uint32_t edc_bist_cmd_reg, edc_bist_cmd_addr_reg, edc_bist_cmd_len_reg;
+ uint32_t edc_bist_cmd_data_pattern, edc_bist_status_rdata_reg;
+
+/*
+ * These macro are missing in t4_regs.h file.
+ */
+#define EDC_STRIDE_T5 (EDC_T51_BASE_ADDR - EDC_T50_BASE_ADDR)
+#define EDC_REG_T5(reg, idx) (reg + EDC_STRIDE_T5 * idx)
+
+ edc_bist_cmd_reg = EDC_REG_T5(EDC_H_BIST_CMD, idx);
+ edc_bist_cmd_addr_reg = EDC_REG_T5(EDC_H_BIST_CMD_ADDR, idx);
+ edc_bist_cmd_len_reg = EDC_REG_T5(EDC_H_BIST_CMD_LEN, idx);
+ edc_bist_cmd_data_pattern = EDC_REG_T5(EDC_H_BIST_DATA_PATTERN, idx);
+ edc_bist_status_rdata_reg = EDC_REG_T5(EDC_H_BIST_STATUS_RDATA, idx);
+#undef EDC_REG_T5
+#undef EDC_STRIDE_T5
+
+ if (csio_rd_reg32(hw, edc_bist_cmd_reg) & START_BIST)
+ return -EBUSY;
+ csio_wr_reg32(hw, addr & ~0x3fU, edc_bist_cmd_addr_reg);
+ csio_wr_reg32(hw, 64, edc_bist_cmd_len_reg);
+ csio_wr_reg32(hw, 0xc, edc_bist_cmd_data_pattern);
+ csio_wr_reg32(hw, BIST_OPCODE(1) | START_BIST | BIST_CMD_GAP(1),
+ edc_bist_cmd_reg);
+ i = csio_hw_wait_op_done_val(hw, edc_bist_cmd_reg, START_BIST,
+ 0, 10, 1, NULL);
+ if (i)
+ return i;
+
+#define EDC_DATA(i) (EDC_BIST_STATUS_REG(EDC_BIST_STATUS_RDATA, i) + idx)
+
+ for (i = 15; i >= 0; i--)
+ *data++ = htonl(csio_rd_reg32(hw, EDC_DATA(i)));
+ if (ecc)
+ *ecc = csio_rd_reg64(hw, EDC_DATA(16));
+#undef EDC_DATA
+ return 0;
+}
+
+/*
+ * csio_t5_memory_rw - read/write EDC 0, EDC 1 or MC via PCIE memory window
+ * @hw: the csio_hw
+ * @win: PCI-E memory Window to use
+ * @mtype: memory type: MEM_EDC0, MEM_EDC1, MEM_MC0 (or MEM_MC) or MEM_MC1
+ * @addr: address within indicated memory type
+ * @len: amount of memory to transfer
+ * @buf: host memory buffer
+ * @dir: direction of transfer 1 => read, 0 => write
+ *
+ * Reads/writes an [almost] arbitrary memory region in the firmware: the
+ * firmware memory address, length and host buffer must be aligned on
+ * 32-bit boudaries. The memory is transferred as a raw byte sequence
+ * from/to the firmware's memory. If this memory contains data
+ * structures which contain multi-byte integers, it's the callers
+ * responsibility to perform appropriate byte order conversions.
+ */
+static int
+csio_t5_memory_rw(struct csio_hw *hw, u32 win, int mtype, u32 addr,
+ u32 len, uint32_t *buf, int dir)
+{
+ u32 pos, start, offset, memoffset;
+ u32 edc_size, mc_size, win_pf, mem_reg, mem_aperture, mem_base;
+
+ /*
+ * Argument sanity checks ...
+ */
+ if ((addr & 0x3) || (len & 0x3))
+ return -EINVAL;
+
+ /* Offset into the region of memory which is being accessed
+ * MEM_EDC0 = 0
+ * MEM_EDC1 = 1
+ * MEM_MC = 2 -- T4
+ * MEM_MC0 = 2 -- For T5
+ * MEM_MC1 = 3 -- For T5
+ */
+ edc_size = EDRAM_SIZE_GET(csio_rd_reg32(hw, MA_EDRAM0_BAR));
+ if (mtype != MEM_MC1)
+ memoffset = (mtype * (edc_size * 1024 * 1024));
+ else {
+ mc_size = EXT_MEM_SIZE_GET(csio_rd_reg32(hw,
+ MA_EXT_MEMORY_BAR));
+ memoffset = (MEM_MC0 * edc_size + mc_size) * 1024 * 1024;
+ }
+
+ /* Determine the PCIE_MEM_ACCESS_OFFSET */
+ addr = addr + memoffset;
+
+ /*
+ * Each PCI-E Memory Window is programmed with a window size -- or
+ * "aperture" -- which controls the granularity of its mapping onto
+ * adapter memory. We need to grab that aperture in order to know
+ * how to use the specified window. The window is also programmed
+ * with the base address of the Memory Window in BAR0's address
+ * space. For T4 this is an absolute PCI-E Bus Address. For T5
+ * the address is relative to BAR0.
+ */
+ mem_reg = csio_rd_reg32(hw,
+ PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN, win));
+ mem_aperture = 1 << (WINDOW(mem_reg) + 10);
+ mem_base = GET_PCIEOFST(mem_reg) << 10;
+
+ start = addr & ~(mem_aperture-1);
+ offset = addr - start;
+ win_pf = V_PFNUM(hw->pfn);
+
+ csio_dbg(hw, "csio_t5_memory_rw: mem_reg: 0x%x, mem_aperture: 0x%x\n",
+ mem_reg, mem_aperture);
+ csio_dbg(hw, "csio_t5_memory_rw: mem_base: 0x%x, mem_offset: 0x%x\n",
+ mem_base, memoffset);
+ csio_dbg(hw, "csio_t5_memory_rw: start:0x%x, offset:0x%x, win_pf:%d\n",
+ start, offset, win_pf);
+ csio_dbg(hw, "csio_t5_memory_rw: mtype: %d, addr: 0x%x, len: %d\n",
+ mtype, addr, len);
+
+ for (pos = start; len > 0; pos += mem_aperture, offset = 0) {
+ /*
+ * Move PCI-E Memory Window to our current transfer
+ * position. Read it back to ensure that changes propagate
+ * before we attempt to use the new value.
+ */
+ csio_wr_reg32(hw, pos | win_pf,
+ PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, win));
+ csio_rd_reg32(hw,
+ PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET, win));
+
+ while (offset < mem_aperture && len > 0) {
+ if (dir)
+ *buf++ = csio_rd_reg32(hw, mem_base + offset);
+ else
+ csio_wr_reg32(hw, *buf++, mem_base + offset);
+
+ offset += sizeof(__be32);
+ len -= sizeof(__be32);
+ }
+ }
+ return 0;
+}
+
+/*
+ * csio_t5_dfs_create_ext_mem - setup debugfs for MC0 or MC1 to read the values
+ * @hw: the csio_hw
+ *
+ * This function creates files in the debugfs with external memory region
+ * MC0 & MC1.
+ */
+static void
+csio_t5_dfs_create_ext_mem(struct csio_hw *hw)
+{
+ u32 size;
+ int i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE);
+ if (i & EXT_MEM_ENABLE) {
+ size = csio_rd_reg32(hw, MA_EXT_MEMORY_BAR);
+ csio_add_debugfs_mem(hw, "mc0", MEM_MC0,
+ EXT_MEM_SIZE_GET(size));
+ }
+ if (i & EXT_MEM1_ENABLE) {
+ size = csio_rd_reg32(hw, MA_EXT_MEMORY1_BAR);
+ csio_add_debugfs_mem(hw, "mc1", MEM_MC1,
+ EXT_MEM_SIZE_GET(size));
+ }
+}
+
+/* T5 adapter specific function */
+struct csio_hw_chip_ops t5_ops = {
+ .chip_set_mem_win = csio_t5_set_mem_win,
+ .chip_pcie_intr_handler = csio_t5_pcie_intr_handler,
+ .chip_flash_cfg_addr = csio_t5_flash_cfg_addr,
+ .chip_mc_read = csio_t5_mc_read,
+ .chip_edc_read = csio_t5_edc_read,
+ .chip_memory_rw = csio_t5_memory_rw,
+ .chip_dfs_create_ext_mem = csio_t5_dfs_create_ext_mem,
+};
--
1.7.1
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