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@@ -1,404 +0,0 @@
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-/*
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- * This file is part of the Chelsio FCoE driver for Linux.
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- *
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- * Copyright (c) 2008-2013 Chelsio Communications, Inc. All rights reserved.
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- *
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- * This software is available to you under a choice of one of two
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- * licenses. You may choose to be licensed under the terms of the GNU
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- * General Public License (GPL) Version 2, available from the file
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- * OpenIB.org BSD license below:
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- *
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- * Redistribution and use in source and binary forms, with or
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- * without modification, are permitted provided that the following
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- * conditions are met:
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- *
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- * - Redistributions of source code must retain the above
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- * copyright notice, this list of conditions and the following
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- * - Redistributions in binary form must reproduce the above
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- * copyright notice, this list of conditions and the following
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- * disclaimer in the documentation and/or other materials
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- * provided with the distribution.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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- * SOFTWARE.
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- */
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-
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-#include "csio_hw.h"
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-#include "csio_init.h"
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-
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-/*
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- * Return the specified PCI-E Configuration Space register from our Physical
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- * Function. We try first via a Firmware LDST Command since we prefer to let
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- * the firmware own all of these registers, but if that fails we go for it
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- * directly ourselves.
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- */
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-static uint32_t
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-csio_t4_read_pcie_cfg4(struct csio_hw *hw, int reg)
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-{
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- u32 val = 0;
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- struct csio_mb *mbp;
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- int rv;
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- struct fw_ldst_cmd *ldst_cmd;
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-
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- mbp = mempool_alloc(hw->mb_mempool, GFP_ATOMIC);
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- if (!mbp) {
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- CSIO_INC_STATS(hw, n_err_nomem);
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- pci_read_config_dword(hw->pdev, reg, &val);
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- return val;
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- }
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-
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- csio_mb_ldst(hw, mbp, CSIO_MB_DEFAULT_TMO, reg);
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- rv = csio_mb_issue(hw, mbp);
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-
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- /*
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- * If the LDST Command suucceeded, exctract the returned register
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- * value. Otherwise read it directly ourself.
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- */
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- if (rv == 0) {
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- ldst_cmd = (struct fw_ldst_cmd *)(mbp->mb);
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- val = ntohl(ldst_cmd->u.pcie.data[0]);
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- } else
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- pci_read_config_dword(hw->pdev, reg, &val);
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-
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- mempool_free(mbp, hw->mb_mempool);
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-
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- return val;
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-}
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-
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-static int
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-csio_t4_set_mem_win(struct csio_hw *hw, uint32_t win)
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-{
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- u32 bar0;
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- u32 mem_win_base;
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-
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- /*
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- * Truncation intentional: we only read the bottom 32-bits of the
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- * 64-bit BAR0/BAR1 ... We use the hardware backdoor mechanism to
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- * read BAR0 instead of using pci_resource_start() because we could be
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- * operating from within a Virtual Machine which is trapping our
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- * accesses to our Configuration Space and we need to set up the PCI-E
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- * Memory Window decoders with the actual addresses which will be
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- * coming across the PCI-E link.
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- */
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- bar0 = csio_t4_read_pcie_cfg4(hw, PCI_BASE_ADDRESS_0);
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- bar0 &= PCI_BASE_ADDRESS_MEM_MASK;
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-
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- mem_win_base = bar0 + MEMWIN_BASE;
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-
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- /*
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- * Set up memory window for accessing adapter memory ranges. (Read
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- * back MA register to ensure that changes propagate before we attempt
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- * to use the new values.)
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- */
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- csio_wr_reg32(hw, mem_win_base | BIR_V(0) |
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- WINDOW_V(ilog2(MEMWIN_APERTURE) - 10),
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- PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN_A, win));
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- csio_rd_reg32(hw,
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- PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN_A, win));
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- return 0;
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-}
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-
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-/*
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- * Interrupt handler for the PCIE module.
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- */
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-static void
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-csio_t4_pcie_intr_handler(struct csio_hw *hw)
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-{
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- static struct intr_info sysbus_intr_info[] = {
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- { RNPP_F, "RXNP array parity error", -1, 1 },
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- { RPCP_F, "RXPC array parity error", -1, 1 },
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- { RCIP_F, "RXCIF array parity error", -1, 1 },
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- { RCCP_F, "Rx completions control array parity error", -1, 1 },
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- { RFTP_F, "RXFT array parity error", -1, 1 },
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- { 0, NULL, 0, 0 }
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- };
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- static struct intr_info pcie_port_intr_info[] = {
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- { TPCP_F, "TXPC array parity error", -1, 1 },
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- { TNPP_F, "TXNP array parity error", -1, 1 },
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- { TFTP_F, "TXFT array parity error", -1, 1 },
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- { TCAP_F, "TXCA array parity error", -1, 1 },
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- { TCIP_F, "TXCIF array parity error", -1, 1 },
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- { RCAP_F, "RXCA array parity error", -1, 1 },
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- { OTDD_F, "outbound request TLP discarded", -1, 1 },
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- { RDPE_F, "Rx data parity error", -1, 1 },
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- { TDUE_F, "Tx uncorrectable data error", -1, 1 },
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- { 0, NULL, 0, 0 }
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- };
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-
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- static struct intr_info pcie_intr_info[] = {
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- { MSIADDRLPERR_F, "MSI AddrL parity error", -1, 1 },
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- { MSIADDRHPERR_F, "MSI AddrH parity error", -1, 1 },
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- { MSIDATAPERR_F, "MSI data parity error", -1, 1 },
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- { MSIXADDRLPERR_F, "MSI-X AddrL parity error", -1, 1 },
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- { MSIXADDRHPERR_F, "MSI-X AddrH parity error", -1, 1 },
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- { MSIXDATAPERR_F, "MSI-X data parity error", -1, 1 },
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- { MSIXDIPERR_F, "MSI-X DI parity error", -1, 1 },
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- { PIOCPLPERR_F, "PCI PIO completion FIFO parity error", -1, 1 },
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- { PIOREQPERR_F, "PCI PIO request FIFO parity error", -1, 1 },
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- { TARTAGPERR_F, "PCI PCI target tag FIFO parity error", -1, 1 },
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- { CCNTPERR_F, "PCI CMD channel count parity error", -1, 1 },
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- { CREQPERR_F, "PCI CMD channel request parity error", -1, 1 },
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- { CRSPPERR_F, "PCI CMD channel response parity error", -1, 1 },
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- { DCNTPERR_F, "PCI DMA channel count parity error", -1, 1 },
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- { DREQPERR_F, "PCI DMA channel request parity error", -1, 1 },
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- { DRSPPERR_F, "PCI DMA channel response parity error", -1, 1 },
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- { HCNTPERR_F, "PCI HMA channel count parity error", -1, 1 },
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- { HREQPERR_F, "PCI HMA channel request parity error", -1, 1 },
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- { HRSPPERR_F, "PCI HMA channel response parity error", -1, 1 },
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- { CFGSNPPERR_F, "PCI config snoop FIFO parity error", -1, 1 },
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- { FIDPERR_F, "PCI FID parity error", -1, 1 },
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- { INTXCLRPERR_F, "PCI INTx clear parity error", -1, 1 },
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- { MATAGPERR_F, "PCI MA tag parity error", -1, 1 },
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- { PIOTAGPERR_F, "PCI PIO tag parity error", -1, 1 },
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- { RXCPLPERR_F, "PCI Rx completion parity error", -1, 1 },
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- { RXWRPERR_F, "PCI Rx write parity error", -1, 1 },
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- { RPLPERR_F, "PCI replay buffer parity error", -1, 1 },
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- { PCIESINT_F, "PCI core secondary fault", -1, 1 },
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- { PCIEPINT_F, "PCI core primary fault", -1, 1 },
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- { UNXSPLCPLERR_F, "PCI unexpected split completion error", -1,
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- 0 },
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- { 0, NULL, 0, 0 }
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- };
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-
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- int fat;
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- fat = csio_handle_intr_status(hw,
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- PCIE_CORE_UTL_SYSTEM_BUS_AGENT_STATUS_A,
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- sysbus_intr_info) +
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- csio_handle_intr_status(hw,
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- PCIE_CORE_UTL_PCI_EXPRESS_PORT_STATUS_A,
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- pcie_port_intr_info) +
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- csio_handle_intr_status(hw, PCIE_INT_CAUSE_A, pcie_intr_info);
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- if (fat)
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- csio_hw_fatal_err(hw);
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-}
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-
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-/*
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- * csio_t4_flash_cfg_addr - return the address of the flash configuration file
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- * @hw: the HW module
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- *
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- * Return the address within the flash where the Firmware Configuration
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- * File is stored.
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- */
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-static unsigned int
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-csio_t4_flash_cfg_addr(struct csio_hw *hw)
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-{
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- return FLASH_CFG_OFFSET;
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-}
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-
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-/*
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- * csio_t4_mc_read - read from MC through backdoor accesses
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- * @hw: the hw module
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- * @idx: not used for T4 adapter
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- * @addr: address of first byte requested
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- * @data: 64 bytes of data containing the requested address
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- * @ecc: where to store the corresponding 64-bit ECC word
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- *
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- * Read 64 bytes of data from MC starting at a 64-byte-aligned address
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- * that covers the requested address @addr. If @parity is not %NULL it
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- * is assigned the 64-bit ECC word for the read data.
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- */
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-static int
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-csio_t4_mc_read(struct csio_hw *hw, int idx, uint32_t addr, __be32 *data,
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- uint64_t *ecc)
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-{
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- int i;
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-
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- if (csio_rd_reg32(hw, MC_BIST_CMD_A) & START_BIST_F)
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- return -EBUSY;
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- csio_wr_reg32(hw, addr & ~0x3fU, MC_BIST_CMD_ADDR_A);
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- csio_wr_reg32(hw, 64, MC_BIST_CMD_LEN_A);
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- csio_wr_reg32(hw, 0xc, MC_BIST_DATA_PATTERN_A);
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- csio_wr_reg32(hw, BIST_OPCODE_V(1) | START_BIST_F | BIST_CMD_GAP_V(1),
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- MC_BIST_CMD_A);
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- i = csio_hw_wait_op_done_val(hw, MC_BIST_CMD_A, START_BIST_F,
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- 0, 10, 1, NULL);
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- if (i)
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- return i;
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-
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-#define MC_DATA(i) MC_BIST_STATUS_REG(MC_BIST_STATUS_RDATA_A, i)
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-
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- for (i = 15; i >= 0; i--)
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- *data++ = htonl(csio_rd_reg32(hw, MC_DATA(i)));
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- if (ecc)
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- *ecc = csio_rd_reg64(hw, MC_DATA(16));
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-#undef MC_DATA
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- return 0;
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-}
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-
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-/*
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- * csio_t4_edc_read - read from EDC through backdoor accesses
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- * @hw: the hw module
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- * @idx: which EDC to access
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- * @addr: address of first byte requested
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- * @data: 64 bytes of data containing the requested address
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- * @ecc: where to store the corresponding 64-bit ECC word
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- *
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- * Read 64 bytes of data from EDC starting at a 64-byte-aligned address
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- * that covers the requested address @addr. If @parity is not %NULL it
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- * is assigned the 64-bit ECC word for the read data.
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- */
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-static int
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-csio_t4_edc_read(struct csio_hw *hw, int idx, uint32_t addr, __be32 *data,
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- uint64_t *ecc)
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-{
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- int i;
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-
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- idx *= EDC_STRIDE;
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- if (csio_rd_reg32(hw, EDC_BIST_CMD_A + idx) & START_BIST_F)
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- return -EBUSY;
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- csio_wr_reg32(hw, addr & ~0x3fU, EDC_BIST_CMD_ADDR_A + idx);
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- csio_wr_reg32(hw, 64, EDC_BIST_CMD_LEN_A + idx);
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- csio_wr_reg32(hw, 0xc, EDC_BIST_DATA_PATTERN_A + idx);
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- csio_wr_reg32(hw, BIST_OPCODE_V(1) | BIST_CMD_GAP_V(1) | START_BIST_F,
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- EDC_BIST_CMD_A + idx);
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- i = csio_hw_wait_op_done_val(hw, EDC_BIST_CMD_A + idx, START_BIST_F,
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- 0, 10, 1, NULL);
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- if (i)
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- return i;
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-
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-#define EDC_DATA(i) (EDC_BIST_STATUS_REG(EDC_BIST_STATUS_RDATA_A, i) + idx)
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-
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- for (i = 15; i >= 0; i--)
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- *data++ = htonl(csio_rd_reg32(hw, EDC_DATA(i)));
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- if (ecc)
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- *ecc = csio_rd_reg64(hw, EDC_DATA(16));
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-#undef EDC_DATA
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- return 0;
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-}
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-
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-/*
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- * csio_t4_memory_rw - read/write EDC 0, EDC 1 or MC via PCIE memory window
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- * @hw: the csio_hw
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- * @win: PCI-E memory Window to use
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- * @mtype: memory type: MEM_EDC0, MEM_EDC1, MEM_MC0 (or MEM_MC) or MEM_MC1
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- * @addr: address within indicated memory type
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- * @len: amount of memory to transfer
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- * @buf: host memory buffer
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- * @dir: direction of transfer 1 => read, 0 => write
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- *
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- * Reads/writes an [almost] arbitrary memory region in the firmware: the
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- * firmware memory address, length and host buffer must be aligned on
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- * 32-bit boudaries. The memory is transferred as a raw byte sequence
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- * from/to the firmware's memory. If this memory contains data
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- * structures which contain multi-byte integers, it's the callers
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- * responsibility to perform appropriate byte order conversions.
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- */
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-static int
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-csio_t4_memory_rw(struct csio_hw *hw, u32 win, int mtype, u32 addr,
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- u32 len, uint32_t *buf, int dir)
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-{
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- u32 pos, start, offset, memoffset, bar0;
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- u32 edc_size, mc_size, mem_reg, mem_aperture, mem_base;
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-
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- /*
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- * Argument sanity checks ...
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- */
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- if ((addr & 0x3) || (len & 0x3))
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- return -EINVAL;
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-
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- /* Offset into the region of memory which is being accessed
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- * MEM_EDC0 = 0
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- * MEM_EDC1 = 1
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- * MEM_MC = 2 -- T4
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- */
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- edc_size = EDRAM0_SIZE_G(csio_rd_reg32(hw, MA_EDRAM0_BAR_A));
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- if (mtype != MEM_MC1)
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- memoffset = (mtype * (edc_size * 1024 * 1024));
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- else {
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- mc_size = EXT_MEM_SIZE_G(csio_rd_reg32(hw,
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- MA_EXT_MEMORY_BAR_A));
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- memoffset = (MEM_MC0 * edc_size + mc_size) * 1024 * 1024;
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- }
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-
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- /* Determine the PCIE_MEM_ACCESS_OFFSET */
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- addr = addr + memoffset;
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-
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- /*
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- * Each PCI-E Memory Window is programmed with a window size -- or
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- * "aperture" -- which controls the granularity of its mapping onto
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- * adapter memory. We need to grab that aperture in order to know
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- * how to use the specified window. The window is also programmed
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- * with the base address of the Memory Window in BAR0's address
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- * space. For T4 this is an absolute PCI-E Bus Address. For T5
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- * the address is relative to BAR0.
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- */
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- mem_reg = csio_rd_reg32(hw,
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- PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN_A, win));
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- mem_aperture = 1 << (WINDOW_V(mem_reg) + 10);
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- mem_base = PCIEOFST_G(mem_reg) << 10;
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-
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- bar0 = csio_t4_read_pcie_cfg4(hw, PCI_BASE_ADDRESS_0);
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- bar0 &= PCI_BASE_ADDRESS_MEM_MASK;
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- mem_base -= bar0;
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-
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- start = addr & ~(mem_aperture-1);
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- offset = addr - start;
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-
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- csio_dbg(hw, "csio_t4_memory_rw: mem_reg: 0x%x, mem_aperture: 0x%x\n",
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- mem_reg, mem_aperture);
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- csio_dbg(hw, "csio_t4_memory_rw: mem_base: 0x%x, mem_offset: 0x%x\n",
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- mem_base, memoffset);
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- csio_dbg(hw, "csio_t4_memory_rw: bar0: 0x%x, start:0x%x, offset:0x%x\n",
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- bar0, start, offset);
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- csio_dbg(hw, "csio_t4_memory_rw: mtype: %d, addr: 0x%x, len: %d\n",
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- mtype, addr, len);
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-
|
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- for (pos = start; len > 0; pos += mem_aperture, offset = 0) {
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|
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- /*
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- * Move PCI-E Memory Window to our current transfer
|
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- * position. Read it back to ensure that changes propagate
|
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- * before we attempt to use the new value.
|
|
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- */
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- csio_wr_reg32(hw, pos,
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- PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET_A, win));
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- csio_rd_reg32(hw,
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- PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET_A, win));
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-
|
|
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- while (offset < mem_aperture && len > 0) {
|
|
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- if (dir)
|
|
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- *buf++ = csio_rd_reg32(hw, mem_base + offset);
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- else
|
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- csio_wr_reg32(hw, *buf++, mem_base + offset);
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|
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-
|
|
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- offset += sizeof(__be32);
|
|
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- len -= sizeof(__be32);
|
|
|
- }
|
|
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- }
|
|
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- return 0;
|
|
|
-}
|
|
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-
|
|
|
-/*
|
|
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- * csio_t4_dfs_create_ext_mem - setup debugfs for MC to read the values
|
|
|
- * @hw: the csio_hw
|
|
|
- *
|
|
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- * This function creates files in the debugfs with external memory region MC.
|
|
|
- */
|
|
|
-static void
|
|
|
-csio_t4_dfs_create_ext_mem(struct csio_hw *hw)
|
|
|
-{
|
|
|
- u32 size;
|
|
|
- int i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE_A);
|
|
|
-
|
|
|
- if (i & EXT_MEM_ENABLE_F) {
|
|
|
- size = csio_rd_reg32(hw, MA_EXT_MEMORY_BAR_A);
|
|
|
- csio_add_debugfs_mem(hw, "mc", MEM_MC,
|
|
|
- EXT_MEM_SIZE_G(size));
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-/* T4 adapter specific function */
|
|
|
-struct csio_hw_chip_ops t4_ops = {
|
|
|
- .chip_set_mem_win = csio_t4_set_mem_win,
|
|
|
- .chip_pcie_intr_handler = csio_t4_pcie_intr_handler,
|
|
|
- .chip_flash_cfg_addr = csio_t4_flash_cfg_addr,
|
|
|
- .chip_mc_read = csio_t4_mc_read,
|
|
|
- .chip_edc_read = csio_t4_edc_read,
|
|
|
- .chip_memory_rw = csio_t4_memory_rw,
|
|
|
- .chip_dfs_create_ext_mem = csio_t4_dfs_create_ext_mem,
|
|
|
-};
|
David S. Miller