Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 401 insertions, 0 deletions

diff --git a/drivers/scsi/bfa/bfa_ioc_cb.c b/drivers/scsi/bfa/bfa_ioc_cb.c
new file mode 100644
index 000000000..2fc6215c2
--- /dev/null
+++ b/drivers/scsi/bfa/bfa_ioc_cb.c
@@ -0,0 +1,401 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
+ * Copyright (c) 2014- QLogic Corporation.
+ * All rights reserved
+ * www.qlogic.com
+ *
+ * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
+ */
+
+#include "bfad_drv.h"
+#include "bfa_ioc.h"
+#include "bfi_reg.h"
+#include "bfa_defs.h"
+
+BFA_TRC_FILE(CNA, IOC_CB);
+
+#define bfa_ioc_cb_join_pos(__ioc) ((u32) (1 << BFA_IOC_CB_JOIN_SH))
+
+/*
+ * forward declarations
+ */
+static bfa_boolean_t bfa_ioc_cb_firmware_lock(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_firmware_unlock(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_reg_init(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_map_port(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix);
+static void bfa_ioc_cb_notify_fail(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_ownership_reset(struct bfa_ioc_s *ioc);
+static bfa_boolean_t bfa_ioc_cb_sync_start(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_sync_join(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_sync_leave(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_sync_ack(struct bfa_ioc_s *ioc);
+static bfa_boolean_t bfa_ioc_cb_sync_complete(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_set_cur_ioc_fwstate(
+			struct bfa_ioc_s *ioc, enum bfi_ioc_state fwstate);
+static enum bfi_ioc_state bfa_ioc_cb_get_cur_ioc_fwstate(struct bfa_ioc_s *ioc);
+static void bfa_ioc_cb_set_alt_ioc_fwstate(
+			struct bfa_ioc_s *ioc, enum bfi_ioc_state fwstate);
+static enum bfi_ioc_state bfa_ioc_cb_get_alt_ioc_fwstate(struct bfa_ioc_s *ioc);
+
+static struct bfa_ioc_hwif_s hwif_cb;
+
+/*
+ * Called from bfa_ioc_attach() to map asic specific calls.
+ */
+void
+bfa_ioc_set_cb_hwif(struct bfa_ioc_s *ioc)
+{
+	hwif_cb.ioc_pll_init = bfa_ioc_cb_pll_init;
+	hwif_cb.ioc_firmware_lock = bfa_ioc_cb_firmware_lock;
+	hwif_cb.ioc_firmware_unlock = bfa_ioc_cb_firmware_unlock;
+	hwif_cb.ioc_reg_init = bfa_ioc_cb_reg_init;
+	hwif_cb.ioc_map_port = bfa_ioc_cb_map_port;
+	hwif_cb.ioc_isr_mode_set = bfa_ioc_cb_isr_mode_set;
+	hwif_cb.ioc_notify_fail = bfa_ioc_cb_notify_fail;
+	hwif_cb.ioc_ownership_reset = bfa_ioc_cb_ownership_reset;
+	hwif_cb.ioc_sync_start = bfa_ioc_cb_sync_start;
+	hwif_cb.ioc_sync_join = bfa_ioc_cb_sync_join;
+	hwif_cb.ioc_sync_leave = bfa_ioc_cb_sync_leave;
+	hwif_cb.ioc_sync_ack = bfa_ioc_cb_sync_ack;
+	hwif_cb.ioc_sync_complete = bfa_ioc_cb_sync_complete;
+	hwif_cb.ioc_set_fwstate = bfa_ioc_cb_set_cur_ioc_fwstate;
+	hwif_cb.ioc_get_fwstate = bfa_ioc_cb_get_cur_ioc_fwstate;
+	hwif_cb.ioc_set_alt_fwstate = bfa_ioc_cb_set_alt_ioc_fwstate;
+	hwif_cb.ioc_get_alt_fwstate = bfa_ioc_cb_get_alt_ioc_fwstate;
+
+	ioc->ioc_hwif = &hwif_cb;
+}
+
+/*
+ * Return true if firmware of current driver matches the running firmware.
+ */
+static bfa_boolean_t
+bfa_ioc_cb_firmware_lock(struct bfa_ioc_s *ioc)
+{
+	enum bfi_ioc_state alt_fwstate, cur_fwstate;
+	struct bfi_ioc_image_hdr_s fwhdr;
+
+	cur_fwstate = bfa_ioc_cb_get_cur_ioc_fwstate(ioc);
+	bfa_trc(ioc, cur_fwstate);
+	alt_fwstate = bfa_ioc_cb_get_alt_ioc_fwstate(ioc);
+	bfa_trc(ioc, alt_fwstate);
+
+	/*
+	 * Uninit implies this is the only driver as of now.
+	 */
+	if (cur_fwstate == BFI_IOC_UNINIT)
+		return BFA_TRUE;
+	/*
+	 * Check if another driver with a different firmware is active
+	 */
+	bfa_ioc_fwver_get(ioc, &fwhdr);
+	if (!bfa_ioc_fwver_cmp(ioc, &fwhdr) &&
+		alt_fwstate != BFI_IOC_DISABLED) {
+		bfa_trc(ioc, alt_fwstate);
+		return BFA_FALSE;
+	}
+
+	return BFA_TRUE;
+}
+
+static void
+bfa_ioc_cb_firmware_unlock(struct bfa_ioc_s *ioc)
+{
+}
+
+/*
+ * Notify other functions on HB failure.
+ */
+static void
+bfa_ioc_cb_notify_fail(struct bfa_ioc_s *ioc)
+{
+	writel(~0U, ioc->ioc_regs.err_set);
+	readl(ioc->ioc_regs.err_set);
+}
+
+/*
+ * Host to LPU mailbox message addresses
+ */
+static struct { u32 hfn_mbox, lpu_mbox, hfn_pgn; } iocreg_fnreg[] = {
+	{ HOSTFN0_LPU_MBOX0_0, LPU_HOSTFN0_MBOX0_0, HOST_PAGE_NUM_FN0 },
+	{ HOSTFN1_LPU_MBOX0_8, LPU_HOSTFN1_MBOX0_8, HOST_PAGE_NUM_FN1 }
+};
+
+/*
+ * Host <-> LPU mailbox command/status registers
+ */
+static struct { u32 hfn, lpu; } iocreg_mbcmd[] = {
+
+	{ HOSTFN0_LPU0_CMD_STAT, LPU0_HOSTFN0_CMD_STAT },
+	{ HOSTFN1_LPU1_CMD_STAT, LPU1_HOSTFN1_CMD_STAT }
+};
+
+static void
+bfa_ioc_cb_reg_init(struct bfa_ioc_s *ioc)
+{
+	void __iomem *rb;
+	int		pcifn = bfa_ioc_pcifn(ioc);
+
+	rb = bfa_ioc_bar0(ioc);
+
+	ioc->ioc_regs.hfn_mbox = rb + iocreg_fnreg[pcifn].hfn_mbox;
+	ioc->ioc_regs.lpu_mbox = rb + iocreg_fnreg[pcifn].lpu_mbox;
+	ioc->ioc_regs.host_page_num_fn = rb + iocreg_fnreg[pcifn].hfn_pgn;
+
+	if (ioc->port_id == 0) {
+		ioc->ioc_regs.heartbeat = rb + BFA_IOC0_HBEAT_REG;
+		ioc->ioc_regs.ioc_fwstate = rb + BFA_IOC0_STATE_REG;
+		ioc->ioc_regs.alt_ioc_fwstate = rb + BFA_IOC1_STATE_REG;
+	} else {
+		ioc->ioc_regs.heartbeat = (rb + BFA_IOC1_HBEAT_REG);
+		ioc->ioc_regs.ioc_fwstate = (rb + BFA_IOC1_STATE_REG);
+		ioc->ioc_regs.alt_ioc_fwstate = (rb + BFA_IOC0_STATE_REG);
+	}
+
+	/*
+	 * Host <-> LPU mailbox command/status registers
+	 */
+	ioc->ioc_regs.hfn_mbox_cmd = rb + iocreg_mbcmd[pcifn].hfn;
+	ioc->ioc_regs.lpu_mbox_cmd = rb + iocreg_mbcmd[pcifn].lpu;
+
+	/*
+	 * PSS control registers
+	 */
+	ioc->ioc_regs.pss_ctl_reg = (rb + PSS_CTL_REG);
+	ioc->ioc_regs.pss_err_status_reg = (rb + PSS_ERR_STATUS_REG);
+	ioc->ioc_regs.app_pll_fast_ctl_reg = (rb + APP_PLL_LCLK_CTL_REG);
+	ioc->ioc_regs.app_pll_slow_ctl_reg = (rb + APP_PLL_SCLK_CTL_REG);
+
+	/*
+	 * IOC semaphore registers and serialization
+	 */
+	ioc->ioc_regs.ioc_sem_reg = (rb + HOST_SEM0_REG);
+	ioc->ioc_regs.ioc_init_sem_reg = (rb + HOST_SEM2_REG);
+
+	/*
+	 * sram memory access
+	 */
+	ioc->ioc_regs.smem_page_start = (rb + PSS_SMEM_PAGE_START);
+	ioc->ioc_regs.smem_pg0 = BFI_IOC_SMEM_PG0_CB;
+
+	/*
+	 * err set reg : for notification of hb failure
+	 */
+	ioc->ioc_regs.err_set = (rb + ERR_SET_REG);
+}
+
+/*
+ * Initialize IOC to port mapping.
+ */
+
+static void
+bfa_ioc_cb_map_port(struct bfa_ioc_s *ioc)
+{
+	/*
+	 * For crossbow, port id is same as pci function.
+	 */
+	ioc->port_id = bfa_ioc_pcifn(ioc);
+
+	bfa_trc(ioc, ioc->port_id);
+}
+
+/*
+ * Set interrupt mode for a function: INTX or MSIX
+ */
+static void
+bfa_ioc_cb_isr_mode_set(struct bfa_ioc_s *ioc, bfa_boolean_t msix)
+{
+}
+
+/*
+ * Synchronized IOC failure processing routines
+ */
+static bfa_boolean_t
+bfa_ioc_cb_sync_start(struct bfa_ioc_s *ioc)
+{
+	u32 ioc_fwstate = readl(ioc->ioc_regs.ioc_fwstate);
+
+	/**
+	 * Driver load time.  If the join bit is set,
+	 * it is due to an unclean exit by the driver for this
+	 * PCI fn in the previous incarnation. Whoever comes here first
+	 * should clean it up, no matter which PCI fn.
+	 */
+	if (ioc_fwstate & BFA_IOC_CB_JOIN_MASK) {
+		writel(BFI_IOC_UNINIT, ioc->ioc_regs.ioc_fwstate);
+		writel(BFI_IOC_UNINIT, ioc->ioc_regs.alt_ioc_fwstate);
+		return BFA_TRUE;
+	}
+
+	return bfa_ioc_cb_sync_complete(ioc);
+}
+
+/*
+ * Cleanup hw semaphore and usecnt registers
+ */
+static void
+bfa_ioc_cb_ownership_reset(struct bfa_ioc_s *ioc)
+{
+
+	/*
+	 * Read the hw sem reg to make sure that it is locked
+	 * before we clear it. If it is not locked, writing 1
+	 * will lock it instead of clearing it.
+	 */
+	readl(ioc->ioc_regs.ioc_sem_reg);
+	writel(1, ioc->ioc_regs.ioc_sem_reg);
+}
+
+/*
+ * Synchronized IOC failure processing routines
+ */
+static void
+bfa_ioc_cb_sync_join(struct bfa_ioc_s *ioc)
+{
+	u32 r32 = readl(ioc->ioc_regs.ioc_fwstate);
+	u32 join_pos = bfa_ioc_cb_join_pos(ioc);
+
+	writel((r32 | join_pos), ioc->ioc_regs.ioc_fwstate);
+}
+
+static void
+bfa_ioc_cb_sync_leave(struct bfa_ioc_s *ioc)
+{
+	u32 r32 = readl(ioc->ioc_regs.ioc_fwstate);
+	u32 join_pos = bfa_ioc_cb_join_pos(ioc);
+
+	writel((r32 & ~join_pos), ioc->ioc_regs.ioc_fwstate);
+}
+
+static void
+bfa_ioc_cb_set_cur_ioc_fwstate(struct bfa_ioc_s *ioc,
+			enum bfi_ioc_state fwstate)
+{
+	u32 r32 = readl(ioc->ioc_regs.ioc_fwstate);
+
+	writel((fwstate | (r32 & BFA_IOC_CB_JOIN_MASK)),
+				ioc->ioc_regs.ioc_fwstate);
+}
+
+static enum bfi_ioc_state
+bfa_ioc_cb_get_cur_ioc_fwstate(struct bfa_ioc_s *ioc)
+{
+	return (enum bfi_ioc_state)(readl(ioc->ioc_regs.ioc_fwstate) &
+			BFA_IOC_CB_FWSTATE_MASK);
+}
+
+static void
+bfa_ioc_cb_set_alt_ioc_fwstate(struct bfa_ioc_s *ioc,
+			enum bfi_ioc_state fwstate)
+{
+	u32 r32 = readl(ioc->ioc_regs.alt_ioc_fwstate);
+
+	writel((fwstate | (r32 & BFA_IOC_CB_JOIN_MASK)),
+				ioc->ioc_regs.alt_ioc_fwstate);
+}
+
+static enum bfi_ioc_state
+bfa_ioc_cb_get_alt_ioc_fwstate(struct bfa_ioc_s *ioc)
+{
+	return (enum bfi_ioc_state)(readl(ioc->ioc_regs.alt_ioc_fwstate) &
+			BFA_IOC_CB_FWSTATE_MASK);
+}
+
+static void
+bfa_ioc_cb_sync_ack(struct bfa_ioc_s *ioc)
+{
+	bfa_ioc_cb_set_cur_ioc_fwstate(ioc, BFI_IOC_FAIL);
+}
+
+static bfa_boolean_t
+bfa_ioc_cb_sync_complete(struct bfa_ioc_s *ioc)
+{
+	u32 fwstate, alt_fwstate;
+	fwstate = bfa_ioc_cb_get_cur_ioc_fwstate(ioc);
+
+	/*
+	 * At this point, this IOC is hoding the hw sem in the
+	 * start path (fwcheck) OR in the disable/enable path
+	 * OR to check if the other IOC has acknowledged failure.
+	 *
+	 * So, this IOC can be in UNINIT, INITING, DISABLED, FAIL
+	 * or in MEMTEST states. In a normal scenario, this IOC
+	 * can not be in OP state when this function is called.
+	 *
+	 * However, this IOC could still be in OP state when
+	 * the OS driver is starting up, if the OptROM code has
+	 * left it in that state.
+	 *
+	 * If we had marked this IOC's fwstate as BFI_IOC_FAIL
+	 * in the failure case and now, if the fwstate is not
+	 * BFI_IOC_FAIL it implies that the other PCI fn have
+	 * reinitialized the ASIC or this IOC got disabled, so
+	 * return TRUE.
+	 */
+	if (fwstate == BFI_IOC_UNINIT ||
+		fwstate == BFI_IOC_INITING ||
+		fwstate == BFI_IOC_DISABLED ||
+		fwstate == BFI_IOC_MEMTEST ||
+		fwstate == BFI_IOC_OP)
+		return BFA_TRUE;
+	else {
+		alt_fwstate = bfa_ioc_cb_get_alt_ioc_fwstate(ioc);
+		if (alt_fwstate == BFI_IOC_FAIL ||
+			alt_fwstate == BFI_IOC_DISABLED ||
+			alt_fwstate == BFI_IOC_UNINIT ||
+			alt_fwstate == BFI_IOC_INITING ||
+			alt_fwstate == BFI_IOC_MEMTEST)
+			return BFA_TRUE;
+		else
+			return BFA_FALSE;
+	}
+}
+
+bfa_status_t
+bfa_ioc_cb_pll_init(void __iomem *rb, enum bfi_asic_mode fcmode)
+{
+	u32	pll_sclk, pll_fclk, join_bits;
+
+	pll_sclk = __APP_PLL_SCLK_ENABLE | __APP_PLL_SCLK_LRESETN |
+		__APP_PLL_SCLK_P0_1(3U) |
+		__APP_PLL_SCLK_JITLMT0_1(3U) |
+		__APP_PLL_SCLK_CNTLMT0_1(3U);
+	pll_fclk = __APP_PLL_LCLK_ENABLE | __APP_PLL_LCLK_LRESETN |
+		__APP_PLL_LCLK_RSEL200500 | __APP_PLL_LCLK_P0_1(3U) |
+		__APP_PLL_LCLK_JITLMT0_1(3U) |
+		__APP_PLL_LCLK_CNTLMT0_1(3U);
+	join_bits = readl(rb + BFA_IOC0_STATE_REG) &
+			BFA_IOC_CB_JOIN_MASK;
+	writel((BFI_IOC_UNINIT | join_bits), (rb + BFA_IOC0_STATE_REG));
+	join_bits = readl(rb + BFA_IOC1_STATE_REG) &
+			BFA_IOC_CB_JOIN_MASK;
+	writel((BFI_IOC_UNINIT | join_bits), (rb + BFA_IOC1_STATE_REG));
+	writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
+	writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
+	writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
+	writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
+	writel(0xffffffffU, (rb + HOSTFN0_INT_MSK));
+	writel(0xffffffffU, (rb + HOSTFN1_INT_MSK));
+	writel(__APP_PLL_SCLK_LOGIC_SOFT_RESET, rb + APP_PLL_SCLK_CTL_REG);
+	writel(__APP_PLL_SCLK_BYPASS | __APP_PLL_SCLK_LOGIC_SOFT_RESET,
+			rb + APP_PLL_SCLK_CTL_REG);
+	writel(__APP_PLL_LCLK_LOGIC_SOFT_RESET, rb + APP_PLL_LCLK_CTL_REG);
+	writel(__APP_PLL_LCLK_BYPASS | __APP_PLL_LCLK_LOGIC_SOFT_RESET,
+			rb + APP_PLL_LCLK_CTL_REG);
+	udelay(2);
+	writel(__APP_PLL_SCLK_LOGIC_SOFT_RESET, rb + APP_PLL_SCLK_CTL_REG);
+	writel(__APP_PLL_LCLK_LOGIC_SOFT_RESET, rb + APP_PLL_LCLK_CTL_REG);
+	writel(pll_sclk | __APP_PLL_SCLK_LOGIC_SOFT_RESET,
+			rb + APP_PLL_SCLK_CTL_REG);
+	writel(pll_fclk | __APP_PLL_LCLK_LOGIC_SOFT_RESET,
+			rb + APP_PLL_LCLK_CTL_REG);
+	udelay(2000);
+	writel(0xffffffffU, (rb + HOSTFN0_INT_STATUS));
+	writel(0xffffffffU, (rb + HOSTFN1_INT_STATUS));
+	writel(pll_sclk, (rb + APP_PLL_SCLK_CTL_REG));
+	writel(pll_fclk, (rb + APP_PLL_LCLK_CTL_REG));
+
+	return BFA_STATUS_OK;
+}