summaryrefslogtreecommitdiffstats
path: root/drivers/net/wireless/brcm80211/brcmsmac/nicpci.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/wireless/brcm80211/brcmsmac/nicpci.c')
-rw-r--r--drivers/net/wireless/brcm80211/brcmsmac/nicpci.c826
1 files changed, 0 insertions, 826 deletions
diff --git a/drivers/net/wireless/brcm80211/brcmsmac/nicpci.c b/drivers/net/wireless/brcm80211/brcmsmac/nicpci.c
deleted file mode 100644
index 7fad6dc19258..000000000000
--- a/drivers/net/wireless/brcm80211/brcmsmac/nicpci.c
+++ /dev/null
@@ -1,826 +0,0 @@
-/*
- * Copyright (c) 2010 Broadcom Corporation
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-#include <linux/slab.h>
-#include <linux/delay.h>
-#include <linux/pci.h>
-
-#include <defs.h>
-#include <soc.h>
-#include <chipcommon.h>
-#include "aiutils.h"
-#include "pub.h"
-#include "nicpci.h"
-
-/* SPROM offsets */
-#define SRSH_ASPM_OFFSET 4 /* word 4 */
-#define SRSH_ASPM_ENB 0x18 /* bit 3, 4 */
-#define SRSH_ASPM_L1_ENB 0x10 /* bit 4 */
-#define SRSH_ASPM_L0s_ENB 0x8 /* bit 3 */
-
-#define SRSH_PCIE_MISC_CONFIG 5 /* word 5 */
-#define SRSH_L23READY_EXIT_NOPERST 0x8000 /* bit 15 */
-#define SRSH_CLKREQ_OFFSET_REV5 20 /* word 20 for srom rev <= 5 */
-#define SRSH_CLKREQ_ENB 0x0800 /* bit 11 */
-#define SRSH_BD_OFFSET 6 /* word 6 */
-
-/* chipcontrol */
-#define CHIPCTRL_4321_PLL_DOWN 0x800000/* serdes PLL down override */
-
-/* MDIO control */
-#define MDIOCTL_DIVISOR_MASK 0x7f /* clock to be used on MDIO */
-#define MDIOCTL_DIVISOR_VAL 0x2
-#define MDIOCTL_PREAM_EN 0x80 /* Enable preamble sequnce */
-#define MDIOCTL_ACCESS_DONE 0x100 /* Transaction complete */
-
-/* MDIO Data */
-#define MDIODATA_MASK 0x0000ffff /* data 2 bytes */
-#define MDIODATA_TA 0x00020000 /* Turnaround */
-
-#define MDIODATA_REGADDR_SHF 18 /* Regaddr shift */
-#define MDIODATA_REGADDR_MASK 0x007c0000 /* Regaddr Mask */
-#define MDIODATA_DEVADDR_SHF 23 /* Physmedia devaddr shift */
-#define MDIODATA_DEVADDR_MASK 0x0f800000
- /* Physmedia devaddr Mask */
-
-/* MDIO Data for older revisions < 10 */
-#define MDIODATA_REGADDR_SHF_OLD 18 /* Regaddr shift */
-#define MDIODATA_REGADDR_MASK_OLD 0x003c0000
- /* Regaddr Mask */
-#define MDIODATA_DEVADDR_SHF_OLD 22 /* Physmedia devaddr shift */
-#define MDIODATA_DEVADDR_MASK_OLD 0x0fc00000
- /* Physmedia devaddr Mask */
-
-/* Transactions flags */
-#define MDIODATA_WRITE 0x10000000
-#define MDIODATA_READ 0x20000000
-#define MDIODATA_START 0x40000000
-
-#define MDIODATA_DEV_ADDR 0x0 /* dev address for serdes */
-#define MDIODATA_BLK_ADDR 0x1F /* blk address for serdes */
-
-/* serdes regs (rev < 10) */
-#define MDIODATA_DEV_PLL 0x1d /* SERDES PLL Dev */
-#define MDIODATA_DEV_TX 0x1e /* SERDES TX Dev */
-#define MDIODATA_DEV_RX 0x1f /* SERDES RX Dev */
-
-/* SERDES RX registers */
-#define SERDES_RX_CTRL 1 /* Rx cntrl */
-#define SERDES_RX_TIMER1 2 /* Rx Timer1 */
-#define SERDES_RX_CDR 6 /* CDR */
-#define SERDES_RX_CDRBW 7 /* CDR BW */
-/* SERDES RX control register */
-#define SERDES_RX_CTRL_FORCE 0x80 /* rxpolarity_force */
-#define SERDES_RX_CTRL_POLARITY 0x40 /* rxpolarity_value */
-
-/* SERDES PLL registers */
-#define SERDES_PLL_CTRL 1 /* PLL control reg */
-#define PLL_CTRL_FREQDET_EN 0x4000 /* bit 14 is FREQDET on */
-
-/* Linkcontrol reg offset in PCIE Cap */
-#define PCIE_CAP_LINKCTRL_OFFSET 16 /* offset in pcie cap */
-#define PCIE_CAP_LCREG_ASPML0s 0x01 /* ASPM L0s in linkctrl */
-#define PCIE_CAP_LCREG_ASPML1 0x02 /* ASPM L1 in linkctrl */
-#define PCIE_CLKREQ_ENAB 0x100 /* CLKREQ Enab in linkctrl */
-
-#define PCIE_ASPM_ENAB 3 /* ASPM L0s & L1 in linkctrl */
-#define PCIE_ASPM_L1_ENAB 2 /* ASPM L0s & L1 in linkctrl */
-#define PCIE_ASPM_L0s_ENAB 1 /* ASPM L0s & L1 in linkctrl */
-#define PCIE_ASPM_DISAB 0 /* ASPM L0s & L1 in linkctrl */
-
-/* Power management threshold */
-#define PCIE_L1THRESHOLDTIME_MASK 0xFF00 /* bits 8 - 15 */
-#define PCIE_L1THRESHOLDTIME_SHIFT 8 /* PCIE_L1THRESHOLDTIME_SHIFT */
-#define PCIE_L1THRESHOLD_WARVAL 0x72 /* WAR value */
-#define PCIE_ASPMTIMER_EXTEND 0x01000000
- /* > rev7:
- * enable extend ASPM timer
- */
-
-/* different register spaces to access thru pcie indirect access */
-#define PCIE_CONFIGREGS 1 /* Access to config space */
-#define PCIE_PCIEREGS 2 /* Access to pcie registers */
-
-/* PCIE protocol PHY diagnostic registers */
-#define PCIE_PLP_STATUSREG 0x204 /* Status */
-
-/* Status reg PCIE_PLP_STATUSREG */
-#define PCIE_PLP_POLARITYINV_STAT 0x10
-
-/* PCIE protocol DLLP diagnostic registers */
-#define PCIE_DLLP_LCREG 0x100 /* Link Control */
-#define PCIE_DLLP_PMTHRESHREG 0x128 /* Power Management Threshold */
-
-/* PCIE protocol TLP diagnostic registers */
-#define PCIE_TLP_WORKAROUNDSREG 0x004 /* TLP Workarounds */
-
-/* Sonics to PCI translation types */
-#define SBTOPCI_PREF 0x4 /* prefetch enable */
-#define SBTOPCI_BURST 0x8 /* burst enable */
-#define SBTOPCI_RC_READMULTI 0x20 /* memory read multiple */
-
-#define PCI_CLKRUN_DSBL 0x8000 /* Bit 15 forceClkrun */
-
-/* PCI core index in SROM shadow area */
-#define SRSH_PI_OFFSET 0 /* first word */
-#define SRSH_PI_MASK 0xf000 /* bit 15:12 */
-#define SRSH_PI_SHIFT 12 /* bit 15:12 */
-
-#define PCIREGOFFS(field) offsetof(struct sbpciregs, field)
-#define PCIEREGOFFS(field) offsetof(struct sbpcieregs, field)
-
-/* Sonics side: PCI core and host control registers */
-struct sbpciregs {
- u32 control; /* PCI control */
- u32 PAD[3];
- u32 arbcontrol; /* PCI arbiter control */
- u32 clkrun; /* Clkrun Control (>=rev11) */
- u32 PAD[2];
- u32 intstatus; /* Interrupt status */
- u32 intmask; /* Interrupt mask */
- u32 sbtopcimailbox; /* Sonics to PCI mailbox */
- u32 PAD[9];
- u32 bcastaddr; /* Sonics broadcast address */
- u32 bcastdata; /* Sonics broadcast data */
- u32 PAD[2];
- u32 gpioin; /* ro: gpio input (>=rev2) */
- u32 gpioout; /* rw: gpio output (>=rev2) */
- u32 gpioouten; /* rw: gpio output enable (>= rev2) */
- u32 gpiocontrol; /* rw: gpio control (>= rev2) */
- u32 PAD[36];
- u32 sbtopci0; /* Sonics to PCI translation 0 */
- u32 sbtopci1; /* Sonics to PCI translation 1 */
- u32 sbtopci2; /* Sonics to PCI translation 2 */
- u32 PAD[189];
- u32 pcicfg[4][64]; /* 0x400 - 0x7FF, PCI Cfg Space (>=rev8) */
- u16 sprom[36]; /* SPROM shadow Area */
- u32 PAD[46];
-};
-
-/* SB side: PCIE core and host control registers */
-struct sbpcieregs {
- u32 control; /* host mode only */
- u32 PAD[2];
- u32 biststatus; /* bist Status: 0x00C */
- u32 gpiosel; /* PCIE gpio sel: 0x010 */
- u32 gpioouten; /* PCIE gpio outen: 0x14 */
- u32 PAD[2];
- u32 intstatus; /* Interrupt status: 0x20 */
- u32 intmask; /* Interrupt mask: 0x24 */
- u32 sbtopcimailbox; /* sb to pcie mailbox: 0x028 */
- u32 PAD[53];
- u32 sbtopcie0; /* sb to pcie translation 0: 0x100 */
- u32 sbtopcie1; /* sb to pcie translation 1: 0x104 */
- u32 sbtopcie2; /* sb to pcie translation 2: 0x108 */
- u32 PAD[5];
-
- /* pcie core supports in direct access to config space */
- u32 configaddr; /* pcie config space access: Address field: 0x120 */
- u32 configdata; /* pcie config space access: Data field: 0x124 */
-
- /* mdio access to serdes */
- u32 mdiocontrol; /* controls the mdio access: 0x128 */
- u32 mdiodata; /* Data to the mdio access: 0x12c */
-
- /* pcie protocol phy/dllp/tlp register indirect access mechanism */
- u32 pcieindaddr; /* indirect access to
- * the internal register: 0x130
- */
- u32 pcieinddata; /* Data to/from the internal regsiter: 0x134 */
-
- u32 clkreqenctrl; /* >= rev 6, Clkreq rdma control : 0x138 */
- u32 PAD[177];
- u32 pciecfg[4][64]; /* 0x400 - 0x7FF, PCIE Cfg Space */
- u16 sprom[64]; /* SPROM shadow Area */
-};
-
-struct pcicore_info {
- struct bcma_device *core;
- struct si_pub *sih; /* System interconnect handle */
- struct pci_dev *dev;
- u8 pciecap_lcreg_offset;/* PCIE capability LCreg offset
- * in the config space
- */
- bool pcie_pr42767;
- u8 pcie_polarity;
- u8 pcie_war_aspm_ovr; /* Override ASPM/Clkreq settings */
-
- u8 pmecap_offset; /* PM Capability offset in the config space */
- bool pmecap; /* Capable of generating PME */
-};
-
-#define PCIE_ASPM(sih) \
- ((ai_get_buscoretype(sih) == PCIE_CORE_ID) && \
- ((ai_get_buscorerev(sih) >= 3) && \
- (ai_get_buscorerev(sih) <= 5)))
-
-
-/* delay needed between the mdio control/ mdiodata register data access */
-static void pr28829_delay(void)
-{
- udelay(10);
-}
-
-/* Initialize the PCI core.
- * It's caller's responsibility to make sure that this is done only once
- */
-struct pcicore_info *pcicore_init(struct si_pub *sih, struct bcma_device *core)
-{
- struct pcicore_info *pi;
-
- /* alloc struct pcicore_info */
- pi = kzalloc(sizeof(struct pcicore_info), GFP_ATOMIC);
- if (pi == NULL)
- return NULL;
-
- pi->sih = sih;
- pi->dev = core->bus->host_pci;
- pi->core = core;
-
- if (core->id.id == PCIE_CORE_ID) {
- u8 cap_ptr;
- cap_ptr = pcicore_find_pci_capability(pi->dev, PCI_CAP_ID_EXP,
- NULL, NULL);
- pi->pciecap_lcreg_offset = cap_ptr + PCIE_CAP_LINKCTRL_OFFSET;
- }
- return pi;
-}
-
-void pcicore_deinit(struct pcicore_info *pch)
-{
- kfree(pch);
-}
-
-/* return cap_offset if requested capability exists in the PCI config space */
-/* Note that it's caller's responsibility to make sure it's a pci bus */
-u8
-pcicore_find_pci_capability(struct pci_dev *dev, u8 req_cap_id,
- unsigned char *buf, u32 *buflen)
-{
- u8 cap_id;
- u8 cap_ptr = 0;
- u32 bufsize;
- u8 byte_val;
-
- /* check for Header type 0 */
- pci_read_config_byte(dev, PCI_HEADER_TYPE, &byte_val);
- if ((byte_val & 0x7f) != PCI_HEADER_TYPE_NORMAL)
- goto end;
-
- /* check if the capability pointer field exists */
- pci_read_config_byte(dev, PCI_STATUS, &byte_val);
- if (!(byte_val & PCI_STATUS_CAP_LIST))
- goto end;
-
- pci_read_config_byte(dev, PCI_CAPABILITY_LIST, &cap_ptr);
- /* check if the capability pointer is 0x00 */
- if (cap_ptr == 0x00)
- goto end;
-
- /* loop thru the capability list
- * and see if the pcie capability exists
- */
-
- pci_read_config_byte(dev, cap_ptr, &cap_id);
-
- while (cap_id != req_cap_id) {
- pci_read_config_byte(dev, cap_ptr + 1, &cap_ptr);
- if (cap_ptr == 0x00)
- break;
- pci_read_config_byte(dev, cap_ptr, &cap_id);
- }
- if (cap_id != req_cap_id)
- goto end;
-
- /* found the caller requested capability */
- if (buf != NULL && buflen != NULL) {
- u8 cap_data;
-
- bufsize = *buflen;
- if (!bufsize)
- goto end;
- *buflen = 0;
- /* copy the capability data excluding cap ID and next ptr */
- cap_data = cap_ptr + 2;
- if ((bufsize + cap_data) > PCI_SZPCR)
- bufsize = PCI_SZPCR - cap_data;
- *buflen = bufsize;
- while (bufsize--) {
- pci_read_config_byte(dev, cap_data, buf);
- cap_data++;
- buf++;
- }
- }
-end:
- return cap_ptr;
-}
-
-/* ***** Register Access API */
-static uint
-pcie_readreg(struct bcma_device *core, uint addrtype, uint offset)
-{
- uint retval = 0xFFFFFFFF;
-
- switch (addrtype) {
- case PCIE_CONFIGREGS:
- bcma_write32(core, PCIEREGOFFS(configaddr), offset);
- (void)bcma_read32(core, PCIEREGOFFS(configaddr));
- retval = bcma_read32(core, PCIEREGOFFS(configdata));
- break;
- case PCIE_PCIEREGS:
- bcma_write32(core, PCIEREGOFFS(pcieindaddr), offset);
- (void)bcma_read32(core, PCIEREGOFFS(pcieindaddr));
- retval = bcma_read32(core, PCIEREGOFFS(pcieinddata));
- break;
- }
-
- return retval;
-}
-
-static uint pcie_writereg(struct bcma_device *core, uint addrtype,
- uint offset, uint val)
-{
- switch (addrtype) {
- case PCIE_CONFIGREGS:
- bcma_write32(core, PCIEREGOFFS(configaddr), offset);
- bcma_write32(core, PCIEREGOFFS(configdata), val);
- break;
- case PCIE_PCIEREGS:
- bcma_write32(core, PCIEREGOFFS(pcieindaddr), offset);
- bcma_write32(core, PCIEREGOFFS(pcieinddata), val);
- break;
- default:
- break;
- }
- return 0;
-}
-
-static bool pcie_mdiosetblock(struct pcicore_info *pi, uint blk)
-{
- uint mdiodata, i = 0;
- uint pcie_serdes_spinwait = 200;
-
- mdiodata = (MDIODATA_START | MDIODATA_WRITE | MDIODATA_TA |
- (MDIODATA_DEV_ADDR << MDIODATA_DEVADDR_SHF) |
- (MDIODATA_BLK_ADDR << MDIODATA_REGADDR_SHF) |
- (blk << 4));
- bcma_write32(pi->core, PCIEREGOFFS(mdiodata), mdiodata);
-
- pr28829_delay();
- /* retry till the transaction is complete */
- while (i < pcie_serdes_spinwait) {
- if (bcma_read32(pi->core, PCIEREGOFFS(mdiocontrol)) &
- MDIOCTL_ACCESS_DONE)
- break;
-
- udelay(1000);
- i++;
- }
-
- if (i >= pcie_serdes_spinwait)
- return false;
-
- return true;
-}
-
-static int
-pcie_mdioop(struct pcicore_info *pi, uint physmedia, uint regaddr, bool write,
- uint *val)
-{
- uint mdiodata;
- uint i = 0;
- uint pcie_serdes_spinwait = 10;
-
- /* enable mdio access to SERDES */
- bcma_write32(pi->core, PCIEREGOFFS(mdiocontrol),
- MDIOCTL_PREAM_EN | MDIOCTL_DIVISOR_VAL);
-
- if (ai_get_buscorerev(pi->sih) >= 10) {
- /* new serdes is slower in rw,
- * using two layers of reg address mapping
- */
- if (!pcie_mdiosetblock(pi, physmedia))
- return 1;
- mdiodata = ((MDIODATA_DEV_ADDR << MDIODATA_DEVADDR_SHF) |
- (regaddr << MDIODATA_REGADDR_SHF));
- pcie_serdes_spinwait *= 20;
- } else {
- mdiodata = ((physmedia << MDIODATA_DEVADDR_SHF_OLD) |
- (regaddr << MDIODATA_REGADDR_SHF_OLD));
- }
-
- if (!write)
- mdiodata |= (MDIODATA_START | MDIODATA_READ | MDIODATA_TA);
- else
- mdiodata |= (MDIODATA_START | MDIODATA_WRITE | MDIODATA_TA |
- *val);
-
- bcma_write32(pi->core, PCIEREGOFFS(mdiodata), mdiodata);
-
- pr28829_delay();
-
- /* retry till the transaction is complete */
- while (i < pcie_serdes_spinwait) {
- if (bcma_read32(pi->core, PCIEREGOFFS(mdiocontrol)) &
- MDIOCTL_ACCESS_DONE) {
- if (!write) {
- pr28829_delay();
- *val = (bcma_read32(pi->core,
- PCIEREGOFFS(mdiodata)) &
- MDIODATA_MASK);
- }
- /* Disable mdio access to SERDES */
- bcma_write32(pi->core, PCIEREGOFFS(mdiocontrol), 0);
- return 0;
- }
- udelay(1000);
- i++;
- }
-
- /* Timed out. Disable mdio access to SERDES. */
- bcma_write32(pi->core, PCIEREGOFFS(mdiocontrol), 0);
- return 1;
-}
-
-/* use the mdio interface to read from mdio slaves */
-static int
-pcie_mdioread(struct pcicore_info *pi, uint physmedia, uint regaddr,
- uint *regval)
-{
- return pcie_mdioop(pi, physmedia, regaddr, false, regval);
-}
-
-/* use the mdio interface to write to mdio slaves */
-static int
-pcie_mdiowrite(struct pcicore_info *pi, uint physmedia, uint regaddr, uint val)
-{
- return pcie_mdioop(pi, physmedia, regaddr, true, &val);
-}
-
-/* ***** Support functions ***** */
-static u8 pcie_clkreq(struct pcicore_info *pi, u32 mask, u32 val)
-{
- u32 reg_val;
- u8 offset;
-
- offset = pi->pciecap_lcreg_offset;
- if (!offset)
- return 0;
-
- pci_read_config_dword(pi->dev, offset, &reg_val);
- /* set operation */
- if (mask) {
- if (val)
- reg_val |= PCIE_CLKREQ_ENAB;
- else
- reg_val &= ~PCIE_CLKREQ_ENAB;
- pci_write_config_dword(pi->dev, offset, reg_val);
- pci_read_config_dword(pi->dev, offset, &reg_val);
- }
- if (reg_val & PCIE_CLKREQ_ENAB)
- return 1;
- else
- return 0;
-}
-
-static void pcie_extendL1timer(struct pcicore_info *pi, bool extend)
-{
- u32 w;
- struct si_pub *sih = pi->sih;
-
- if (ai_get_buscoretype(sih) != PCIE_CORE_ID ||
- ai_get_buscorerev(sih) < 7)
- return;
-
- w = pcie_readreg(pi->core, PCIE_PCIEREGS, PCIE_DLLP_PMTHRESHREG);
- if (extend)
- w |= PCIE_ASPMTIMER_EXTEND;
- else
- w &= ~PCIE_ASPMTIMER_EXTEND;
- pcie_writereg(pi->core, PCIE_PCIEREGS, PCIE_DLLP_PMTHRESHREG, w);
- w = pcie_readreg(pi->core, PCIE_PCIEREGS, PCIE_DLLP_PMTHRESHREG);
-}
-
-/* centralized clkreq control policy */
-static void pcie_clkreq_upd(struct pcicore_info *pi, uint state)
-{
- struct si_pub *sih = pi->sih;
-
- switch (state) {
- case SI_DOATTACH:
- if (PCIE_ASPM(sih))
- pcie_clkreq(pi, 1, 0);
- break;
- case SI_PCIDOWN:
- /* turn on serdes PLL down */
- if (ai_get_buscorerev(sih) == 6) {
- ai_cc_reg(sih,
- offsetof(struct chipcregs, chipcontrol_addr),
- ~0, 0);
- ai_cc_reg(sih,
- offsetof(struct chipcregs, chipcontrol_data),
- ~0x40, 0);
- } else if (pi->pcie_pr42767) {
- pcie_clkreq(pi, 1, 1);
- }
- break;
- case SI_PCIUP:
- /* turn off serdes PLL down */
- if (ai_get_buscorerev(sih) == 6) {
- ai_cc_reg(sih,
- offsetof(struct chipcregs, chipcontrol_addr),
- ~0, 0);
- ai_cc_reg(sih,
- offsetof(struct chipcregs, chipcontrol_data),
- ~0x40, 0x40);
- } else if (PCIE_ASPM(sih)) { /* disable clkreq */
- pcie_clkreq(pi, 1, 0);
- }
- break;
- }
-}
-
-/* ***** PCI core WARs ***** */
-/* Done only once at attach time */
-static void pcie_war_polarity(struct pcicore_info *pi)
-{
- u32 w;
-
- if (pi->pcie_polarity != 0)
- return;
-
- w = pcie_readreg(pi->core, PCIE_PCIEREGS, PCIE_PLP_STATUSREG);
-
- /* Detect the current polarity at attach and force that polarity and
- * disable changing the polarity
- */
- if ((w & PCIE_PLP_POLARITYINV_STAT) == 0)
- pi->pcie_polarity = SERDES_RX_CTRL_FORCE;
- else
- pi->pcie_polarity = (SERDES_RX_CTRL_FORCE |
- SERDES_RX_CTRL_POLARITY);
-}
-
-/* enable ASPM and CLKREQ if srom doesn't have it */
-/* Needs to happen when update to shadow SROM is needed
- * : Coming out of 'standby'/'hibernate'
- * : If pcie_war_aspm_ovr state changed
- */
-static void pcie_war_aspm_clkreq(struct pcicore_info *pi)
-{
- struct si_pub *sih = pi->sih;
- u16 val16;
- u32 w;
-
- if (!PCIE_ASPM(sih))
- return;
-
- /* bypass this on QT or VSIM */
- val16 = bcma_read16(pi->core, PCIEREGOFFS(sprom[SRSH_ASPM_OFFSET]));
-
- val16 &= ~SRSH_ASPM_ENB;
- if (pi->pcie_war_aspm_ovr == PCIE_ASPM_ENAB)
- val16 |= SRSH_ASPM_ENB;
- else if (pi->pcie_war_aspm_ovr == PCIE_ASPM_L1_ENAB)
- val16 |= SRSH_ASPM_L1_ENB;
- else if (pi->pcie_war_aspm_ovr == PCIE_ASPM_L0s_ENAB)
- val16 |= SRSH_ASPM_L0s_ENB;
-
- bcma_write16(pi->core, PCIEREGOFFS(sprom[SRSH_ASPM_OFFSET]), val16);
-
- pci_read_config_dword(pi->dev, pi->pciecap_lcreg_offset, &w);
- w &= ~PCIE_ASPM_ENAB;
- w |= pi->pcie_war_aspm_ovr;
- pci_write_config_dword(pi->dev, pi->pciecap_lcreg_offset, w);
-
- val16 = bcma_read16(pi->core,
- PCIEREGOFFS(sprom[SRSH_CLKREQ_OFFSET_REV5]));
-
- if (pi->pcie_war_aspm_ovr != PCIE_ASPM_DISAB) {
- val16 |= SRSH_CLKREQ_ENB;
- pi->pcie_pr42767 = true;
- } else
- val16 &= ~SRSH_CLKREQ_ENB;
-
- bcma_write16(pi->core, PCIEREGOFFS(sprom[SRSH_CLKREQ_OFFSET_REV5]),
- val16);
-}
-
-/* Apply the polarity determined at the start */
-/* Needs to happen when coming out of 'standby'/'hibernate' */
-static void pcie_war_serdes(struct pcicore_info *pi)
-{
- u32 w = 0;
-
- if (pi->pcie_polarity != 0)
- pcie_mdiowrite(pi, MDIODATA_DEV_RX, SERDES_RX_CTRL,
- pi->pcie_polarity);
-
- pcie_mdioread(pi, MDIODATA_DEV_PLL, SERDES_PLL_CTRL, &w);
- if (w & PLL_CTRL_FREQDET_EN) {
- w &= ~PLL_CTRL_FREQDET_EN;
- pcie_mdiowrite(pi, MDIODATA_DEV_PLL, SERDES_PLL_CTRL, w);
- }
-}
-
-/* Fix MISC config to allow coming out of L2/L3-Ready state w/o PRST */
-/* Needs to happen when coming out of 'standby'/'hibernate' */
-static void pcie_misc_config_fixup(struct pcicore_info *pi)
-{
- u16 val16;
-
- val16 = bcma_read16(pi->core,
- PCIEREGOFFS(sprom[SRSH_PCIE_MISC_CONFIG]));
-
- if ((val16 & SRSH_L23READY_EXIT_NOPERST) == 0) {
- val16 |= SRSH_L23READY_EXIT_NOPERST;
- bcma_write16(pi->core,
- PCIEREGOFFS(sprom[SRSH_PCIE_MISC_CONFIG]), val16);
- }
-}
-
-/* quick hack for testing */
-/* Needs to happen when coming out of 'standby'/'hibernate' */
-static void pcie_war_noplldown(struct pcicore_info *pi)
-{
- /* turn off serdes PLL down */
- ai_cc_reg(pi->sih, offsetof(struct chipcregs, chipcontrol),
- CHIPCTRL_4321_PLL_DOWN, CHIPCTRL_4321_PLL_DOWN);
-
- /* clear srom shadow backdoor */
- bcma_write16(pi->core, PCIEREGOFFS(sprom[SRSH_BD_OFFSET]), 0);
-}
-
-/* Needs to happen when coming out of 'standby'/'hibernate' */
-static void pcie_war_pci_setup(struct pcicore_info *pi)
-{
- struct si_pub *sih = pi->sih;
- u32 w;
-
- if (ai_get_buscorerev(sih) == 0 || ai_get_buscorerev(sih) == 1) {
- w = pcie_readreg(pi->core, PCIE_PCIEREGS,
- PCIE_TLP_WORKAROUNDSREG);
- w |= 0x8;
- pcie_writereg(pi->core, PCIE_PCIEREGS,
- PCIE_TLP_WORKAROUNDSREG, w);
- }
-
- if (ai_get_buscorerev(sih) == 1) {
- w = pcie_readreg(pi->core, PCIE_PCIEREGS, PCIE_DLLP_LCREG);
- w |= 0x40;
- pcie_writereg(pi->core, PCIE_PCIEREGS, PCIE_DLLP_LCREG, w);
- }
-
- if (ai_get_buscorerev(sih) == 0) {
- pcie_mdiowrite(pi, MDIODATA_DEV_RX, SERDES_RX_TIMER1, 0x8128);
- pcie_mdiowrite(pi, MDIODATA_DEV_RX, SERDES_RX_CDR, 0x0100);
- pcie_mdiowrite(pi, MDIODATA_DEV_RX, SERDES_RX_CDRBW, 0x1466);
- } else if (PCIE_ASPM(sih)) {
- /* Change the L1 threshold for better performance */
- w = pcie_readreg(pi->core, PCIE_PCIEREGS,
- PCIE_DLLP_PMTHRESHREG);
- w &= ~PCIE_L1THRESHOLDTIME_MASK;
- w |= PCIE_L1THRESHOLD_WARVAL << PCIE_L1THRESHOLDTIME_SHIFT;
- pcie_writereg(pi->core, PCIE_PCIEREGS,
- PCIE_DLLP_PMTHRESHREG, w);
-
- pcie_war_serdes(pi);
-
- pcie_war_aspm_clkreq(pi);
- } else if (ai_get_buscorerev(pi->sih) == 7)
- pcie_war_noplldown(pi);
-
- /* Note that the fix is actually in the SROM,
- * that's why this is open-ended
- */
- if (ai_get_buscorerev(pi->sih) >= 6)
- pcie_misc_config_fixup(pi);
-}
-
-/* ***** Functions called during driver state changes ***** */
-void pcicore_attach(struct pcicore_info *pi, int state)
-{
- struct si_pub *sih = pi->sih;
- u32 bfl2 = (u32)getintvar(sih, BRCMS_SROM_BOARDFLAGS2);
-
- /* Determine if this board needs override */
- if (PCIE_ASPM(sih)) {
- if (bfl2 & BFL2_PCIEWAR_OVR)
- pi->pcie_war_aspm_ovr = PCIE_ASPM_DISAB;
- else
- pi->pcie_war_aspm_ovr = PCIE_ASPM_ENAB;
- }
-
- /* These need to happen in this order only */
- pcie_war_polarity(pi);
-
- pcie_war_serdes(pi);
-
- pcie_war_aspm_clkreq(pi);
-
- pcie_clkreq_upd(pi, state);
-
-}
-
-void pcicore_hwup(struct pcicore_info *pi)
-{
- if (!pi || ai_get_buscoretype(pi->sih) != PCIE_CORE_ID)
- return;
-
- pcie_war_pci_setup(pi);
-}
-
-void pcicore_up(struct pcicore_info *pi, int state)
-{
- if (!pi || ai_get_buscoretype(pi->sih) != PCIE_CORE_ID)
- return;
-
- /* Restore L1 timer for better performance */
- pcie_extendL1timer(pi, true);
-
- pcie_clkreq_upd(pi, state);
-}
-
-/* When the device is going to enter D3 state
- * (or the system is going to enter S3/S4 states)
- */
-void pcicore_sleep(struct pcicore_info *pi)
-{
- u32 w;
-
- if (!pi || !PCIE_ASPM(pi->sih))
- return;
-
- pci_read_config_dword(pi->dev, pi->pciecap_lcreg_offset, &w);
- w &= ~PCIE_CAP_LCREG_ASPML1;
- pci_write_config_dword(pi->dev, pi->pciecap_lcreg_offset, w);
-
- pi->pcie_pr42767 = false;
-}
-
-void pcicore_down(struct pcicore_info *pi, int state)
-{
- if (!pi || ai_get_buscoretype(pi->sih) != PCIE_CORE_ID)
- return;
-
- pcie_clkreq_upd(pi, state);
-
- /* Reduce L1 timer for better power savings */
- pcie_extendL1timer(pi, false);
-}
-
-void pcicore_fixcfg(struct pcicore_info *pi)
-{
- struct bcma_device *core = pi->core;
- u16 val16;
- uint regoff;
-
- switch (pi->core->id.id) {
- case BCMA_CORE_PCI:
- regoff = PCIREGOFFS(sprom[SRSH_PI_OFFSET]);
- break;
-
- case BCMA_CORE_PCIE:
- regoff = PCIEREGOFFS(sprom[SRSH_PI_OFFSET]);
- break;
-
- default:
- return;
- }
-
- val16 = bcma_read16(pi->core, regoff);
- if (((val16 & SRSH_PI_MASK) >> SRSH_PI_SHIFT) !=
- (u16)core->core_index) {
- val16 = ((u16)core->core_index << SRSH_PI_SHIFT) |
- (val16 & ~SRSH_PI_MASK);
- bcma_write16(pi->core, regoff, val16);
- }
-}
-
-/* precondition: current core is pci core */
-void
-pcicore_pci_setup(struct pcicore_info *pi)
-{
- bcma_set32(pi->core, PCIREGOFFS(sbtopci2),
- SBTOPCI_PREF | SBTOPCI_BURST);
-
- if (pi->core->id.rev >= 11) {
- bcma_set32(pi->core, PCIREGOFFS(sbtopci2),
- SBTOPCI_RC_READMULTI);
- bcma_set32(pi->core, PCIREGOFFS(clkrun), PCI_CLKRUN_DSBL);
- (void)bcma_read32(pi->core, PCIREGOFFS(clkrun));
- }
-}
OpenPOWER on IntegriCloud