| Message ID | 1456674078-1316-1-git-send-email-ykaneko0929@gmail.com (mailing list archive) |
|---|---|
| State | RFC |
| Delegated to: | Simon Horman |
| Headers | show |
Hello. On 02/28/2016 06:41 PM, Yoshihiro Kaneko wrote: > From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> > > This patch supports the following interrupts. > > - One interrupt for multiple (timestamp, error, gPTP) > - One interrupt for emac > - Four interrupts for dma queue (best effort rx/tx, network control rx/tx) > > This patch improve efficiency of the interrupt handler by adding the > interrupt handler corresponding to each interrupt source described > above. Additionally, it reduces the number of times of the access to > EthernetAVB IF. > Also this patch prevent this driver depends on the whim of a boot loader. > > [ykaneko0929@gmail.com: define bit names of registers] > [ykaneko0929@gmail.com: add comment for gen3 only registers] > [ykaneko0929@gmail.com: fix coding style] > [ykaneko0929@gmail.com: update changelog] > [ykaneko0929@gmail.com: gen3: fix initialization of interrupts] > [ykaneko0929@gmail.com: gen3: fix clearing interrupts] > [ykaneko0929@gmail.com: gen3: add helper function for request_irq()] > [ykaneko0929@gmail.com: gen3: remove IRQF_SHARED flag for request_irq()] > [ykaneko0929@gmail.com: revert ravb_close() and ravb_ptp_stop()] > [ykaneko0929@gmail.com: avoid calling free_irq() to non-hooked interrupts] > [ykaneko0929@gmail.com: make NC/BE interrupt handler a function] > [ykaneko0929@gmail.com: make timestamp interrupt handler a function] > [ykaneko0929@gmail.com: timestamp interrupt is handled in multiple > interrupt handler instead of dma queue interrupt handler] > Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> > Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> OK, you are very close now! Just a few comments... [...] > diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c > index c936682..22ef65d 100644 > --- a/drivers/net/ethernet/renesas/ravb_main.c > +++ b/drivers/net/ethernet/renesas/ravb_main.c [...] > @@ -697,6 +726,47 @@ static void ravb_error_interrupt(struct net_device *ndev) > } > } > > +static bool ravb_queue_interrupt(struct net_device *ndev, int q, > + u32 ris0, u32 *ric0, u32 tis, u32 *tic) > +{ > + struct ravb_private *priv = netdev_priv(ndev); > + Perhaps it makes sense to read the RI[CS]0/TI[CS] here instead of passing them (by reference)? [...] > @@ -714,42 +784,21 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id) > u32 ric0 = ravb_read(ndev, RIC0); > u32 tis = ravb_read(ndev, TIS); > u32 tic = ravb_read(ndev, TIC); > - int q; > > /* Timestamp updated */ > - if (tis & TIS_TFUF) { > - ravb_write(ndev, ~TIS_TFUF, TIS); > - ravb_get_tx_tstamp(ndev); > + if (ravb_timestamp_interrupt(ndev, tis)) > result = IRQ_HANDLED; > - } > > /* Network control and best effort queue RX/TX */ > - for (q = RAVB_NC; q >= RAVB_BE; q--) { > - if (((ris0 & ric0) & BIT(q)) || > - ((tis & tic) & BIT(q))) { > - if (napi_schedule_prep(&priv->napi[q])) { > - /* Mask RX and TX interrupts */ > - ric0 &= ~BIT(q); > - tic &= ~BIT(q); > - ravb_write(ndev, ric0, RIC0); > - ravb_write(ndev, tic, TIC); > - __napi_schedule(&priv->napi[q]); > - } else { > - netdev_warn(ndev, > - "ignoring interrupt, rx status 0x%08x, rx mask 0x%08x,\n", > - ris0, ric0); > - netdev_warn(ndev, > - " tx status 0x%08x, tx mask 0x%08x.\n", > - tis, tic); > - } > - result = IRQ_HANDLED; > - } > - } > + if (ravb_queue_interrupt(ndev, RAVB_NC, ris0, &ric0, tis, &tic)) > + result = IRQ_HANDLED; > + if (ravb_queue_interrupt(ndev, RAVB_BE, ris0, &ric0, tis, &tic)) > + result = IRQ_HANDLED; Hmm, perhaps unrolling wasn't such a great idea... we can't use || here as it would be short-circuited. :-( [...] > +static irqreturn_t ravb_rx_tx_interrupt(int irq, void *dev_id, int ravb_queue) Please, please shorten this 'ravb_queue'... Also, would make sense to rename it to ravb_dma_interrupt()... [...] Unfortunately, I still can't do a full gen2 regression testing as both Alt and Porter boards don't work with the recent kernel due to AVB_MDIO stuck at 1... But perhaps such testing isn't even necessary. MBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
2016-03-01 5:30 GMT+09:00 Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>: > Hello. > > > On 02/28/2016 06:41 PM, Yoshihiro Kaneko wrote: > >> From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> >> >> This patch supports the following interrupts. >> >> - One interrupt for multiple (timestamp, error, gPTP) >> - One interrupt for emac >> - Four interrupts for dma queue (best effort rx/tx, network control rx/tx) >> >> This patch improve efficiency of the interrupt handler by adding the >> interrupt handler corresponding to each interrupt source described >> above. Additionally, it reduces the number of times of the access to >> EthernetAVB IF. >> Also this patch prevent this driver depends on the whim of a boot loader. >> >> [ykaneko0929@gmail.com: define bit names of registers] >> [ykaneko0929@gmail.com: add comment for gen3 only registers] >> [ykaneko0929@gmail.com: fix coding style] >> [ykaneko0929@gmail.com: update changelog] >> [ykaneko0929@gmail.com: gen3: fix initialization of interrupts] >> [ykaneko0929@gmail.com: gen3: fix clearing interrupts] >> [ykaneko0929@gmail.com: gen3: add helper function for request_irq()] >> [ykaneko0929@gmail.com: gen3: remove IRQF_SHARED flag for request_irq()] >> [ykaneko0929@gmail.com: revert ravb_close() and ravb_ptp_stop()] >> [ykaneko0929@gmail.com: avoid calling free_irq() to non-hooked interrupts] >> [ykaneko0929@gmail.com: make NC/BE interrupt handler a function] >> [ykaneko0929@gmail.com: make timestamp interrupt handler a function] >> [ykaneko0929@gmail.com: timestamp interrupt is handled in multiple >> interrupt handler instead of dma queue interrupt handler] >> Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> >> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> > > > OK, you are very close now! Just a few comments... > > [...] >> >> diff --git a/drivers/net/ethernet/renesas/ravb_main.c >> b/drivers/net/ethernet/renesas/ravb_main.c >> index c936682..22ef65d 100644 >> --- a/drivers/net/ethernet/renesas/ravb_main.c >> +++ b/drivers/net/ethernet/renesas/ravb_main.c > > [...] >> >> @@ -697,6 +726,47 @@ static void ravb_error_interrupt(struct net_device >> *ndev) >> } >> } >> >> +static bool ravb_queue_interrupt(struct net_device *ndev, int q, >> + u32 ris0, u32 *ric0, u32 tis, u32 *tic) >> +{ >> + struct ravb_private *priv = netdev_priv(ndev); >> + > > > Perhaps it makes sense to read the RI[CS]0/TI[CS] here instead of passing > them (by reference)? OK, I will do. > > [...] > >> @@ -714,42 +784,21 @@ static irqreturn_t ravb_interrupt(int irq, void >> *dev_id) >> u32 ric0 = ravb_read(ndev, RIC0); >> u32 tis = ravb_read(ndev, TIS); >> u32 tic = ravb_read(ndev, TIC); >> - int q; >> >> /* Timestamp updated */ >> - if (tis & TIS_TFUF) { >> - ravb_write(ndev, ~TIS_TFUF, TIS); >> - ravb_get_tx_tstamp(ndev); >> + if (ravb_timestamp_interrupt(ndev, tis)) >> result = IRQ_HANDLED; >> - } >> >> /* Network control and best effort queue RX/TX */ >> - for (q = RAVB_NC; q >= RAVB_BE; q--) { >> - if (((ris0 & ric0) & BIT(q)) || >> - ((tis & tic) & BIT(q))) { >> - if (napi_schedule_prep(&priv->napi[q])) { >> - /* Mask RX and TX interrupts */ >> - ric0 &= ~BIT(q); >> - tic &= ~BIT(q); >> - ravb_write(ndev, ric0, RIC0); >> - ravb_write(ndev, tic, TIC); >> - __napi_schedule(&priv->napi[q]); >> - } else { >> - netdev_warn(ndev, >> - "ignoring interrupt, >> rx status 0x%08x, rx mask 0x%08x,\n", >> - ris0, ric0); >> - netdev_warn(ndev, >> - " >> tx status 0x%08x, tx mask 0x%08x.\n", >> - tis, tic); >> - } >> - result = IRQ_HANDLED; >> - } >> - } >> + if (ravb_queue_interrupt(ndev, RAVB_NC, ris0, &ric0, tis, >> &tic)) >> + result = IRQ_HANDLED; >> + if (ravb_queue_interrupt(ndev, RAVB_BE, ris0, &ric0, tis, >> &tic)) >> + result = IRQ_HANDLED; > > > Hmm, perhaps unrolling wasn't such a great idea... we can't use || here > as it would be short-circuited. :-( > > [...] >> >> +static irqreturn_t ravb_rx_tx_interrupt(int irq, void *dev_id, int >> ravb_queue) > > > Please, please shorten this 'ravb_queue'... I will fix it. > Also, would make sense to rename it to ravb_dma_interrupt()... I have renamed it from ravb_dmaq_interrupt() in this version as you suggested in the previous review. Did you not mean it? > > [...] > > Unfortunately, I still can't do a full gen2 regression testing as both > Alt and Porter boards don't work with the recent kernel due to AVB_MDIO > stuck at 1... But perhaps such testing isn't even necessary. > > MBR, Sergei > Thanks, kaneko -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 03/02/2016 09:16 PM, Yoshihiro Kaneko wrote: >>> From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> >>> >>> This patch supports the following interrupts. >>> >>> - One interrupt for multiple (timestamp, error, gPTP) >>> - One interrupt for emac >>> - Four interrupts for dma queue (best effort rx/tx, network control rx/tx) >>> >>> This patch improve efficiency of the interrupt handler by adding the >>> interrupt handler corresponding to each interrupt source described >>> above. Additionally, it reduces the number of times of the access to >>> EthernetAVB IF. >>> Also this patch prevent this driver depends on the whim of a boot loader. >>> >>> [ykaneko0929@gmail.com: define bit names of registers] >>> [ykaneko0929@gmail.com: add comment for gen3 only registers] >>> [ykaneko0929@gmail.com: fix coding style] >>> [ykaneko0929@gmail.com: update changelog] >>> [ykaneko0929@gmail.com: gen3: fix initialization of interrupts] >>> [ykaneko0929@gmail.com: gen3: fix clearing interrupts] >>> [ykaneko0929@gmail.com: gen3: add helper function for request_irq()] >>> [ykaneko0929@gmail.com: gen3: remove IRQF_SHARED flag for request_irq()] >>> [ykaneko0929@gmail.com: revert ravb_close() and ravb_ptp_stop()] >>> [ykaneko0929@gmail.com: avoid calling free_irq() to non-hooked interrupts] >>> [ykaneko0929@gmail.com: make NC/BE interrupt handler a function] >>> [ykaneko0929@gmail.com: make timestamp interrupt handler a function] >>> [ykaneko0929@gmail.com: timestamp interrupt is handled in multiple >>> interrupt handler instead of dma queue interrupt handler] >>> Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> >>> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> >> >> OK, you are very close now! Just a few comments... >> [...] >>> diff --git a/drivers/net/ethernet/renesas/ravb_main.c >>> b/drivers/net/ethernet/renesas/ravb_main.c >>> index c936682..22ef65d 100644 >>> --- a/drivers/net/ethernet/renesas/ravb_main.c >>> +++ b/drivers/net/ethernet/renesas/ravb_main.c [...] >>> >>> +static irqreturn_t ravb_rx_tx_interrupt(int irq, void *dev_id, int >>> ravb_queue) >> >> Please, please shorten this 'ravb_queue'... > > I will fix it. > >> Also, would make sense to rename it to ravb_dma_interrupt()... > > I have renamed it from ravb_dmaq_interrupt() in this version as you > suggested in the previous review. Did you not mean it? Yes, I meant that, though perhaps got somewhat muddled up. Another variant is to call the current ravb_queue_interrupt() ravb_dma_interrupt_unlocked() (after adding the register reads there) calling this one ravb_dma_interrupt() but I don't insist on the former, ravb_queue_interrupt() is good enough as is; just rename this function please. >> [...] >> >> Unfortunately, I still can't do a full gen2 regression testing as both >> Alt and Porter boards don't work with the recent kernel due to AVB_MDIO >> stuck at 1... But perhaps such testing isn't even necessary. > > Thanks, > kaneko MBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
2016-03-03 3:50 GMT+09:00 Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>: > On 03/02/2016 09:16 PM, Yoshihiro Kaneko wrote: > >>>> From: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> >>>> >>>> This patch supports the following interrupts. >>>> >>>> - One interrupt for multiple (timestamp, error, gPTP) >>>> - One interrupt for emac >>>> - Four interrupts for dma queue (best effort rx/tx, network control >>>> rx/tx) >>>> >>>> This patch improve efficiency of the interrupt handler by adding the >>>> interrupt handler corresponding to each interrupt source described >>>> above. Additionally, it reduces the number of times of the access to >>>> EthernetAVB IF. >>>> Also this patch prevent this driver depends on the whim of a boot >>>> loader. >>>> >>>> [ykaneko0929@gmail.com: define bit names of registers] >>>> [ykaneko0929@gmail.com: add comment for gen3 only registers] >>>> [ykaneko0929@gmail.com: fix coding style] >>>> [ykaneko0929@gmail.com: update changelog] >>>> [ykaneko0929@gmail.com: gen3: fix initialization of interrupts] >>>> [ykaneko0929@gmail.com: gen3: fix clearing interrupts] >>>> [ykaneko0929@gmail.com: gen3: add helper function for request_irq()] >>>> [ykaneko0929@gmail.com: gen3: remove IRQF_SHARED flag for request_irq()] >>>> [ykaneko0929@gmail.com: revert ravb_close() and ravb_ptp_stop()] >>>> [ykaneko0929@gmail.com: avoid calling free_irq() to non-hooked >>>> interrupts] >>>> [ykaneko0929@gmail.com: make NC/BE interrupt handler a function] >>>> [ykaneko0929@gmail.com: make timestamp interrupt handler a function] >>>> [ykaneko0929@gmail.com: timestamp interrupt is handled in multiple >>>> interrupt handler instead of dma queue interrupt handler] >>>> Signed-off-by: Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com> >>>> Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com> >>> >>> >>> OK, you are very close now! Just a few comments... >>> > [...] >>>> >>>> diff --git a/drivers/net/ethernet/renesas/ravb_main.c >>>> b/drivers/net/ethernet/renesas/ravb_main.c >>>> index c936682..22ef65d 100644 >>>> --- a/drivers/net/ethernet/renesas/ravb_main.c >>>> +++ b/drivers/net/ethernet/renesas/ravb_main.c > > [...] >>>> >>>> >>>> +static irqreturn_t ravb_rx_tx_interrupt(int irq, void *dev_id, int >>>> ravb_queue) >>> >>> >>> Please, please shorten this 'ravb_queue'... >> >> >> I will fix it. >> >>> Also, would make sense to rename it to ravb_dma_interrupt()... >> >> >> I have renamed it from ravb_dmaq_interrupt() in this version as you >> suggested in the previous review. Did you not mean it? > > > Yes, I meant that, though perhaps got somewhat muddled up. Another > variant is to call the current ravb_queue_interrupt() > ravb_dma_interrupt_unlocked() (after adding the register reads there) > calling this one ravb_dma_interrupt() but I don't insist on the former, > ravb_queue_interrupt() is good enough as is; just rename this function > please. Thanks for the clarification. I understand. I will rename this function to ravb_dma_interrupt(). > >>> [...] >>> >>> Unfortunately, I still can't do a full gen2 regression testing as >>> both >>> Alt and Porter boards don't work with the recent kernel due to AVB_MDIO >>> stuck at 1... But perhaps such testing isn't even necessary. >> >> >> Thanks, >> kaneko > > > MBR, Sergei > Thanks, kaneko -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Sergei-san, 2016-02-29 0:41 GMT+09:00 Yoshihiro Kaneko <ykaneko0929@gmail.com>: [snip] > +static bool ravb_timestamp_interrupt(struct net_device *ndev, u32 tis) > +{ I'd like to read TIS here like ravb_queue_interrupt(). > + if (tis & TIS_TFUF) { > + ravb_write(ndev, ~TIS_TFUF, TIS); > + ravb_get_tx_tstamp(ndev); > + return true; > + } > + return false; > +} [snip] > +/* Timestamp/Error/gPTP interrupt handler */ > +static irqreturn_t ravb_multi_interrupt(int irq, void *dev_id) > +{ > + struct net_device *ndev = dev_id; > + struct ravb_private *priv = netdev_priv(ndev); > + irqreturn_t result = IRQ_NONE; > + u32 iss, tis; > + > + spin_lock(&priv->lock); > + /* Get interrupt status */ > + iss = ravb_read(ndev, ISS); > + > + /* Timestamp updated */ > + if (iss & ISS_TFUS) { > + tis = ravb_read(ndev, TIS); > + if (ravb_timestamp_interrupt(ndev, tis)) > + result = IRQ_HANDLED; > + } > + > + /* Error status summary */ > + if (iss & ISS_ES) { > + ravb_error_interrupt(ndev); > + result = IRQ_HANDLED; > + } > + > + /* gPTP interrupt status summary */ > + if (iss & ISS_CGIS) > + result = ravb_ptp_interrupt(ndev); This assignment overwrites the result above. How about this? if ((iss & ISS_CGIS) && ravb_ptp_interrupt(ndev) == IRQ_HANDLED) result = IRQ_HANDLED; > + > + mmiowb(); > + spin_unlock(&priv->lock); > + return result; > +} [snip] Thanks, kaneko -- To unsubscribe from this list: send the line "unsubscribe linux-sh" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h index b2160d1..5c16241 100644 --- a/drivers/net/ethernet/renesas/ravb.h +++ b/drivers/net/ethernet/renesas/ravb.h @@ -157,6 +157,7 @@ enum ravb_reg { TIC = 0x0378, TIS = 0x037C, ISS = 0x0380, + CIE = 0x0384, /* R-Car Gen3 only */ GCCR = 0x0390, GMTT = 0x0394, GPTC = 0x0398, @@ -170,6 +171,15 @@ enum ravb_reg { GCT0 = 0x03B8, GCT1 = 0x03BC, GCT2 = 0x03C0, + GIE = 0x03CC, /* R-Car Gen3 only */ + GID = 0x03D0, /* R-Car Gen3 only */ + DIL = 0x0440, /* R-Car Gen3 only */ + RIE0 = 0x0460, /* R-Car Gen3 only */ + RID0 = 0x0464, /* R-Car Gen3 only */ + RIE2 = 0x0470, /* R-Car Gen3 only */ + RID2 = 0x0474, /* R-Car Gen3 only */ + TIE = 0x0478, /* R-Car Gen3 only */ + TID = 0x047c, /* R-Car Gen3 only */ /* E-MAC registers */ ECMR = 0x0500, @@ -556,6 +566,16 @@ enum ISS_BIT { ISS_DPS15 = 0x80000000, }; +/* CIE (R-Car Gen3 only) */ +enum CIE_BIT { + CIE_CRIE = 0x00000001, + CIE_CTIE = 0x00000100, + CIE_RQFM = 0x00010000, + CIE_CL0M = 0x00020000, + CIE_RFWL = 0x00040000, + CIE_RFFL = 0x00080000, +}; + /* GCCR */ enum GCCR_BIT { GCCR_TCR = 0x00000003, @@ -592,6 +612,188 @@ enum GIS_BIT { GIS_PTMF = 0x00000004, }; +/* GIE (R-Car Gen3 only) */ +enum GIE_BIT { + GIE_PTCS = 0x00000001, + GIE_PTOS = 0x00000002, + GIE_PTMS0 = 0x00000004, + GIE_PTMS1 = 0x00000008, + GIE_PTMS2 = 0x00000010, + GIE_PTMS3 = 0x00000020, + GIE_PTMS4 = 0x00000040, + GIE_PTMS5 = 0x00000080, + GIE_PTMS6 = 0x00000100, + GIE_PTMS7 = 0x00000200, + GIE_ATCS0 = 0x00010000, + GIE_ATCS1 = 0x00020000, + GIE_ATCS2 = 0x00040000, + GIE_ATCS3 = 0x00080000, + GIE_ATCS4 = 0x00100000, + GIE_ATCS5 = 0x00200000, + GIE_ATCS6 = 0x00400000, + GIE_ATCS7 = 0x00800000, + GIE_ATCS8 = 0x01000000, + GIE_ATCS9 = 0x02000000, + GIE_ATCS10 = 0x04000000, + GIE_ATCS11 = 0x08000000, + GIE_ATCS12 = 0x10000000, + GIE_ATCS13 = 0x20000000, + GIE_ATCS14 = 0x40000000, + GIE_ATCS15 = 0x80000000, +}; + +/* GID (R-Car Gen3 only) */ +enum GID_BIT { + GID_PTCD = 0x00000001, + GID_PTOD = 0x00000002, + GID_PTMD0 = 0x00000004, + GID_PTMD1 = 0x00000008, + GID_PTMD2 = 0x00000010, + GID_PTMD3 = 0x00000020, + GID_PTMD4 = 0x00000040, + GID_PTMD5 = 0x00000080, + GID_PTMD6 = 0x00000100, + GID_PTMD7 = 0x00000200, + GID_ATCD0 = 0x00010000, + GID_ATCD1 = 0x00020000, + GID_ATCD2 = 0x00040000, + GID_ATCD3 = 0x00080000, + GID_ATCD4 = 0x00100000, + GID_ATCD5 = 0x00200000, + GID_ATCD6 = 0x00400000, + GID_ATCD7 = 0x00800000, + GID_ATCD8 = 0x01000000, + GID_ATCD9 = 0x02000000, + GID_ATCD10 = 0x04000000, + GID_ATCD11 = 0x08000000, + GID_ATCD12 = 0x10000000, + GID_ATCD13 = 0x20000000, + GID_ATCD14 = 0x40000000, + GID_ATCD15 = 0x80000000, +}; + +/* RIE0 (R-Car Gen3 only) */ +enum RIE0_BIT { + RIE0_FRS0 = 0x00000001, + RIE0_FRS1 = 0x00000002, + RIE0_FRS2 = 0x00000004, + RIE0_FRS3 = 0x00000008, + RIE0_FRS4 = 0x00000010, + RIE0_FRS5 = 0x00000020, + RIE0_FRS6 = 0x00000040, + RIE0_FRS7 = 0x00000080, + RIE0_FRS8 = 0x00000100, + RIE0_FRS9 = 0x00000200, + RIE0_FRS10 = 0x00000400, + RIE0_FRS11 = 0x00000800, + RIE0_FRS12 = 0x00001000, + RIE0_FRS13 = 0x00002000, + RIE0_FRS14 = 0x00004000, + RIE0_FRS15 = 0x00008000, + RIE0_FRS16 = 0x00010000, + RIE0_FRS17 = 0x00020000, +}; + +/* RID0 (R-Car Gen3 only) */ +enum RID0_BIT { + RID0_FRD0 = 0x00000001, + RID0_FRD1 = 0x00000002, + RID0_FRD2 = 0x00000004, + RID0_FRD3 = 0x00000008, + RID0_FRD4 = 0x00000010, + RID0_FRD5 = 0x00000020, + RID0_FRD6 = 0x00000040, + RID0_FRD7 = 0x00000080, + RID0_FRD8 = 0x00000100, + RID0_FRD9 = 0x00000200, + RID0_FRD10 = 0x00000400, + RID0_FRD11 = 0x00000800, + RID0_FRD12 = 0x00001000, + RID0_FRD13 = 0x00002000, + RID0_FRD14 = 0x00004000, + RID0_FRD15 = 0x00008000, + RID0_FRD16 = 0x00010000, + RID0_FRD17 = 0x00020000, +}; + +/* RIE2 (R-Car Gen3 only) */ +enum RIE2_BIT { + RIE2_QFS0 = 0x00000001, + RIE2_QFS1 = 0x00000002, + RIE2_QFS2 = 0x00000004, + RIE2_QFS3 = 0x00000008, + RIE2_QFS4 = 0x00000010, + RIE2_QFS5 = 0x00000020, + RIE2_QFS6 = 0x00000040, + RIE2_QFS7 = 0x00000080, + RIE2_QFS8 = 0x00000100, + RIE2_QFS9 = 0x00000200, + RIE2_QFS10 = 0x00000400, + RIE2_QFS11 = 0x00000800, + RIE2_QFS12 = 0x00001000, + RIE2_QFS13 = 0x00002000, + RIE2_QFS14 = 0x00004000, + RIE2_QFS15 = 0x00008000, + RIE2_QFS16 = 0x00010000, + RIE2_QFS17 = 0x00020000, + RIE2_RFFS = 0x80000000, +}; + +/* RID2 (R-Car Gen3 only) */ +enum RID2_BIT { + RID2_QFD0 = 0x00000001, + RID2_QFD1 = 0x00000002, + RID2_QFD2 = 0x00000004, + RID2_QFD3 = 0x00000008, + RID2_QFD4 = 0x00000010, + RID2_QFD5 = 0x00000020, + RID2_QFD6 = 0x00000040, + RID2_QFD7 = 0x00000080, + RID2_QFD8 = 0x00000100, + RID2_QFD9 = 0x00000200, + RID2_QFD10 = 0x00000400, + RID2_QFD11 = 0x00000800, + RID2_QFD12 = 0x00001000, + RID2_QFD13 = 0x00002000, + RID2_QFD14 = 0x00004000, + RID2_QFD15 = 0x00008000, + RID2_QFD16 = 0x00010000, + RID2_QFD17 = 0x00020000, + RID2_RFFD = 0x80000000, +}; + +/* TIE (R-Car Gen3 only) */ +enum TIE_BIT { + TIE_FTS0 = 0x00000001, + TIE_FTS1 = 0x00000002, + TIE_FTS2 = 0x00000004, + TIE_FTS3 = 0x00000008, + TIE_TFUS = 0x00000100, + TIE_TFWS = 0x00000200, + TIE_MFUS = 0x00000400, + TIE_MFWS = 0x00000800, + TIE_TDPS0 = 0x00010000, + TIE_TDPS1 = 0x00020000, + TIE_TDPS2 = 0x00040000, + TIE_TDPS3 = 0x00080000, +}; + +/* TID (R-Car Gen3 only) */ +enum TID_BIT { + TID_FTD0 = 0x00000001, + TID_FTD1 = 0x00000002, + TID_FTD2 = 0x00000004, + TID_FTD3 = 0x00000008, + TID_TFUD = 0x00000100, + TID_TFWD = 0x00000200, + TID_MFUD = 0x00000400, + TID_MFWD = 0x00000800, + TID_TDPD0 = 0x00010000, + TID_TDPD1 = 0x00020000, + TID_TDPD2 = 0x00040000, + TID_TDPD3 = 0x00080000, +}; + /* ECMR */ enum ECMR_BIT { ECMR_PRM = 0x00000001, @@ -817,6 +1019,8 @@ struct ravb_private { int duplex; int emac_irq; enum ravb_chip_id chip_id; + int rx_irqs[NUM_RX_QUEUE]; + int tx_irqs[NUM_TX_QUEUE]; unsigned no_avb_link:1; unsigned avb_link_active_low:1; diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c index c936682..22ef65d 100644 --- a/drivers/net/ethernet/renesas/ravb_main.c +++ b/drivers/net/ethernet/renesas/ravb_main.c @@ -42,6 +42,16 @@ NETIF_MSG_RX_ERR | \ NETIF_MSG_TX_ERR) +static const char *ravb_rx_irqs[NUM_RX_QUEUE] = { + "ch0", /* RAVB_BE */ + "ch1", /* RAVB_NC */ +}; + +static const char *ravb_tx_irqs[NUM_TX_QUEUE] = { + "ch18", /* RAVB_BE */ + "ch19", /* RAVB_NC */ +}; + void ravb_modify(struct net_device *ndev, enum ravb_reg reg, u32 clear, u32 set) { @@ -367,6 +377,7 @@ static void ravb_emac_init(struct net_device *ndev) /* Device init function for Ethernet AVB */ static int ravb_dmac_init(struct net_device *ndev) { + struct ravb_private *priv = netdev_priv(ndev); int error; /* Set CONFIG mode */ @@ -403,6 +414,12 @@ static int ravb_dmac_init(struct net_device *ndev) ravb_write(ndev, TCCR_TFEN, TCCR); /* Interrupt init: */ + if (priv->chip_id == RCAR_GEN3) { + /* Clear DIL.DPLx */ + ravb_write(ndev, 0, DIL); + /* Set queue specific interrupt */ + ravb_write(ndev, CIE_CRIE | CIE_CTIE | CIE_CL0M, CIE); + } /* Frame receive */ ravb_write(ndev, RIC0_FRE0 | RIC0_FRE1, RIC0); /* Disable FIFO full warning */ @@ -645,7 +662,7 @@ static int ravb_stop_dma(struct net_device *ndev) } /* E-MAC interrupt handler */ -static void ravb_emac_interrupt(struct net_device *ndev) +static void ravb_emac_interrupt_unlocked(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); u32 ecsr, psr; @@ -671,6 +688,18 @@ static void ravb_emac_interrupt(struct net_device *ndev) } } +static irqreturn_t ravb_emac_interrupt(int irq, void *dev_id) +{ + struct net_device *ndev = dev_id; + struct ravb_private *priv = netdev_priv(ndev); + + spin_lock(&priv->lock); + ravb_emac_interrupt_unlocked(ndev); + mmiowb(); + spin_unlock(&priv->lock); + return IRQ_HANDLED; +} + /* Error interrupt handler */ static void ravb_error_interrupt(struct net_device *ndev) { @@ -697,6 +726,47 @@ static void ravb_error_interrupt(struct net_device *ndev) } } +static bool ravb_queue_interrupt(struct net_device *ndev, int q, + u32 ris0, u32 *ric0, u32 tis, u32 *tic) +{ + struct ravb_private *priv = netdev_priv(ndev); + + if (((ris0 & *ric0) & BIT(q)) || ((tis & *tic) & BIT(q))) { + if (napi_schedule_prep(&priv->napi[q])) { + /* Mask RX and TX interrupts */ + if (priv->chip_id == RCAR_GEN2) { + *ric0 &= ~BIT(q); + *tic &= ~BIT(q); + ravb_write(ndev, *ric0, RIC0); + ravb_write(ndev, *tic, TIC); + } else { + ravb_write(ndev, BIT(q), RID0); + ravb_write(ndev, BIT(q), TID); + } + __napi_schedule(&priv->napi[q]); + } else { + netdev_warn(ndev, + "ignoring interrupt, rx status 0x%08x, rx mask 0x%08x,\n", + ris0, *ric0); + netdev_warn(ndev, + " tx status 0x%08x, tx mask 0x%08x.\n", + tis, *tic); + } + return true; + } + return false; +} + +static bool ravb_timestamp_interrupt(struct net_device *ndev, u32 tis) +{ + if (tis & TIS_TFUF) { + ravb_write(ndev, ~TIS_TFUF, TIS); + ravb_get_tx_tstamp(ndev); + return true; + } + return false; +} + static irqreturn_t ravb_interrupt(int irq, void *dev_id) { struct net_device *ndev = dev_id; @@ -714,42 +784,21 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id) u32 ric0 = ravb_read(ndev, RIC0); u32 tis = ravb_read(ndev, TIS); u32 tic = ravb_read(ndev, TIC); - int q; /* Timestamp updated */ - if (tis & TIS_TFUF) { - ravb_write(ndev, ~TIS_TFUF, TIS); - ravb_get_tx_tstamp(ndev); + if (ravb_timestamp_interrupt(ndev, tis)) result = IRQ_HANDLED; - } /* Network control and best effort queue RX/TX */ - for (q = RAVB_NC; q >= RAVB_BE; q--) { - if (((ris0 & ric0) & BIT(q)) || - ((tis & tic) & BIT(q))) { - if (napi_schedule_prep(&priv->napi[q])) { - /* Mask RX and TX interrupts */ - ric0 &= ~BIT(q); - tic &= ~BIT(q); - ravb_write(ndev, ric0, RIC0); - ravb_write(ndev, tic, TIC); - __napi_schedule(&priv->napi[q]); - } else { - netdev_warn(ndev, - "ignoring interrupt, rx status 0x%08x, rx mask 0x%08x,\n", - ris0, ric0); - netdev_warn(ndev, - " tx status 0x%08x, tx mask 0x%08x.\n", - tis, tic); - } - result = IRQ_HANDLED; - } - } + if (ravb_queue_interrupt(ndev, RAVB_NC, ris0, &ric0, tis, &tic)) + result = IRQ_HANDLED; + if (ravb_queue_interrupt(ndev, RAVB_BE, ris0, &ric0, tis, &tic)) + result = IRQ_HANDLED; } /* E-MAC status summary */ if (iss & ISS_MS) { - ravb_emac_interrupt(ndev); + ravb_emac_interrupt_unlocked(ndev); result = IRQ_HANDLED; } @@ -767,6 +816,73 @@ static irqreturn_t ravb_interrupt(int irq, void *dev_id) return result; } +/* Timestamp/Error/gPTP interrupt handler */ +static irqreturn_t ravb_multi_interrupt(int irq, void *dev_id) +{ + struct net_device *ndev = dev_id; + struct ravb_private *priv = netdev_priv(ndev); + irqreturn_t result = IRQ_NONE; + u32 iss, tis; + + spin_lock(&priv->lock); + /* Get interrupt status */ + iss = ravb_read(ndev, ISS); + + /* Timestamp updated */ + if (iss & ISS_TFUS) { + tis = ravb_read(ndev, TIS); + if (ravb_timestamp_interrupt(ndev, tis)) + result = IRQ_HANDLED; + } + + /* Error status summary */ + if (iss & ISS_ES) { + ravb_error_interrupt(ndev); + result = IRQ_HANDLED; + } + + /* gPTP interrupt status summary */ + if (iss & ISS_CGIS) + result = ravb_ptp_interrupt(ndev); + + mmiowb(); + spin_unlock(&priv->lock); + return result; +} + +static irqreturn_t ravb_rx_tx_interrupt(int irq, void *dev_id, int ravb_queue) +{ + struct net_device *ndev = dev_id; + struct ravb_private *priv = netdev_priv(ndev); + irqreturn_t result = IRQ_NONE; + u32 ris0, ric0, tis, tic; + + spin_lock(&priv->lock); + + ris0 = ravb_read(ndev, RIS0); + ric0 = ravb_read(ndev, RIC0); + tis = ravb_read(ndev, TIS); + tic = ravb_read(ndev, TIC); + + /* Network control/Best effort queue RX/TX */ + if (ravb_queue_interrupt(ndev, ravb_queue, ris0, &ric0, tis, &tic)) + result = IRQ_HANDLED; + + mmiowb(); + spin_unlock(&priv->lock); + return result; +} + +static irqreturn_t ravb_be_interrupt(int irq, void *dev_id) +{ + return ravb_rx_tx_interrupt(irq, dev_id, RAVB_BE); +} + +static irqreturn_t ravb_nc_interrupt(int irq, void *dev_id) +{ + return ravb_rx_tx_interrupt(irq, dev_id, RAVB_NC); +} + static int ravb_poll(struct napi_struct *napi, int budget) { struct net_device *ndev = napi->dev; @@ -806,8 +922,13 @@ static int ravb_poll(struct napi_struct *napi, int budget) /* Re-enable RX/TX interrupts */ spin_lock_irqsave(&priv->lock, flags); - ravb_modify(ndev, RIC0, mask, mask); - ravb_modify(ndev, TIC, mask, mask); + if (priv->chip_id == RCAR_GEN2) { + ravb_modify(ndev, RIC0, mask, mask); + ravb_modify(ndev, TIC, mask, mask); + } else { + ravb_write(ndev, mask, RIE0); + ravb_write(ndev, mask, TIE); + } mmiowb(); spin_unlock_irqrestore(&priv->lock, flags); @@ -1208,35 +1329,72 @@ static const struct ethtool_ops ravb_ethtool_ops = { .get_ts_info = ravb_get_ts_info, }; +static inline int ravb_hook_irq(unsigned int irq, irq_handler_t handler, + struct net_device *ndev, struct device *dev, + const char *ch) +{ + char *name; + int error; + + name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s", ndev->name, ch); + if (!name) + return -ENOMEM; + error = request_irq(irq, handler, 0, name, ndev); + if (error) + netdev_err(ndev, "cannot request IRQ %s\n", name); + + return error; +} + /* Network device open function for Ethernet AVB */ static int ravb_open(struct net_device *ndev) { struct ravb_private *priv = netdev_priv(ndev); + struct platform_device *pdev = priv->pdev; + struct device *dev = &pdev->dev; int error; napi_enable(&priv->napi[RAVB_BE]); napi_enable(&priv->napi[RAVB_NC]); - error = request_irq(ndev->irq, ravb_interrupt, IRQF_SHARED, ndev->name, - ndev); - if (error) { - netdev_err(ndev, "cannot request IRQ\n"); - goto out_napi_off; - } - - if (priv->chip_id == RCAR_GEN3) { - error = request_irq(priv->emac_irq, ravb_interrupt, - IRQF_SHARED, ndev->name, ndev); + if (priv->chip_id == RCAR_GEN2) { + error = request_irq(ndev->irq, ravb_interrupt, IRQF_SHARED, + ndev->name, ndev); if (error) { netdev_err(ndev, "cannot request IRQ\n"); - goto out_free_irq; + goto out_napi_off; } + } else { + error = ravb_hook_irq(ndev->irq, ravb_multi_interrupt, ndev, + dev, "ch22:multi"); + if (error) + goto out_napi_off; + error = ravb_hook_irq(priv->emac_irq, ravb_emac_interrupt, ndev, + dev, "ch24:emac"); + if (error) + goto out_free_irq; + error = ravb_hook_irq(priv->rx_irqs[RAVB_BE], ravb_be_interrupt, + ndev, dev, "ch0:rx_be"); + if (error) + goto out_free_irq_emac; + error = ravb_hook_irq(priv->tx_irqs[RAVB_BE], ravb_be_interrupt, + ndev, dev, "ch18:tx_be"); + if (error) + goto out_free_irq_be_rx; + error = ravb_hook_irq(priv->rx_irqs[RAVB_NC], ravb_nc_interrupt, + ndev, dev, "ch1:rx_nc"); + if (error) + goto out_free_irq_be_tx; + error = ravb_hook_irq(priv->tx_irqs[RAVB_NC], ravb_nc_interrupt, + ndev, dev, "ch19:tx_nc"); + if (error) + goto out_free_irq_nc_rx; } /* Device init */ error = ravb_dmac_init(ndev); if (error) - goto out_free_irq2; + goto out_free_irq_nc_tx; ravb_emac_init(ndev); /* Initialise PTP Clock driver */ @@ -1256,9 +1414,18 @@ out_ptp_stop: /* Stop PTP Clock driver */ if (priv->chip_id == RCAR_GEN2) ravb_ptp_stop(ndev); -out_free_irq2: - if (priv->chip_id == RCAR_GEN3) - free_irq(priv->emac_irq, ndev); +out_free_irq_nc_tx: + if (priv->chip_id == RCAR_GEN2) + goto out_free_irq; + free_irq(priv->tx_irqs[RAVB_NC], ndev); +out_free_irq_nc_rx: + free_irq(priv->rx_irqs[RAVB_NC], ndev); +out_free_irq_be_tx: + free_irq(priv->tx_irqs[RAVB_BE], ndev); +out_free_irq_be_rx: + free_irq(priv->rx_irqs[RAVB_BE], ndev); +out_free_irq_emac: + free_irq(priv->emac_irq, ndev); out_free_irq: free_irq(ndev->irq, ndev); out_napi_off: @@ -1712,6 +1879,7 @@ static int ravb_probe(struct platform_device *pdev) struct net_device *ndev; int error, irq, q; struct resource *res; + int i; if (!np) { dev_err(&pdev->dev, @@ -1782,6 +1950,22 @@ static int ravb_probe(struct platform_device *pdev) goto out_release; } priv->emac_irq = irq; + for (i = 0; i < NUM_RX_QUEUE; i++) { + irq = platform_get_irq_byname(pdev, ravb_rx_irqs[i]); + if (irq < 0) { + error = irq; + goto out_release; + } + priv->rx_irqs[i] = irq; + } + for (i = 0; i < NUM_TX_QUEUE; i++) { + irq = platform_get_irq_byname(pdev, ravb_tx_irqs[i]); + if (irq < 0) { + error = irq; + goto out_release; + } + priv->tx_irqs[i] = irq; + } } priv->chip_id = chip_id; diff --git a/drivers/net/ethernet/renesas/ravb_ptp.c b/drivers/net/ethernet/renesas/ravb_ptp.c index 57992cc..f1b2cbb 100644 --- a/drivers/net/ethernet/renesas/ravb_ptp.c +++ b/drivers/net/ethernet/renesas/ravb_ptp.c @@ -194,7 +194,12 @@ static int ravb_ptp_extts(struct ptp_clock_info *ptp, priv->ptp.extts[req->index] = on; spin_lock_irqsave(&priv->lock, flags); - ravb_modify(ndev, GIC, GIC_PTCE, on ? GIC_PTCE : 0); + if (priv->chip_id == RCAR_GEN2) + ravb_modify(ndev, GIC, GIC_PTCE, on ? GIC_PTCE : 0); + else if (on) + ravb_write(ndev, GIE_PTCS, GIE); + else + ravb_write(ndev, GID_PTCD, GID); mmiowb(); spin_unlock_irqrestore(&priv->lock, flags); @@ -241,7 +246,10 @@ static int ravb_ptp_perout(struct ptp_clock_info *ptp, error = ravb_ptp_update_compare(priv, (u32)start_ns); if (!error) { /* Unmask interrupt */ - ravb_modify(ndev, GIC, GIC_PTME, GIC_PTME); + if (priv->chip_id == RCAR_GEN2) + ravb_modify(ndev, GIC, GIC_PTME, GIC_PTME); + else + ravb_write(ndev, GIE_PTMS0, GIE); } } else { spin_lock_irqsave(&priv->lock, flags); @@ -250,7 +258,10 @@ static int ravb_ptp_perout(struct ptp_clock_info *ptp, perout->period = 0; /* Mask interrupt */ - ravb_modify(ndev, GIC, GIC_PTME, 0); + if (priv->chip_id == RCAR_GEN2) + ravb_modify(ndev, GIC, GIC_PTME, 0); + else + ravb_write(ndev, GID_PTMD0, GID); } mmiowb(); spin_unlock_irqrestore(&priv->lock, flags);