[PATCH] ehea: IBM eHEA Ethernet Device Driver

Hi Jeff,

I fixed the __iomem issue and tested the driver with sparse. Looks good so far.
Thanks for your effort.

Jan-Bernd Themann

Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com>

 drivers/net/Kconfig             |    9
 drivers/net/Makefile            |    1
 drivers/net/ehea/Makefile       |    6
 drivers/net/ehea/ehea.h         |  447 ++++++
 drivers/net/ehea/ehea_ethtool.c |  294 ++++
 drivers/net/ehea/ehea_hcall.h   |   51
 drivers/net/ehea/ehea_hw.h      |  287 ++++
 drivers/net/ehea/ehea_main.c    | 2654 ++++++++++++++++++++++++++++++++++++++++
 drivers/net/ehea/ehea_phyp.c    |  705 ++++++++++
 drivers/net/ehea/ehea_phyp.h    |  455 ++++++
 drivers/net/ehea/ehea_qmr.c     |  582 ++++++++
 drivers/net/ehea/ehea_qmr.h     |  358 +++++
 12 files changed, 5849 insertions(+)
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 287 insertions, 0 deletions

diff --git a/drivers/net/ehea/ehea_hw.h b/drivers/net/ehea/ehea_hw.h
new file mode 100644
index 000000000000..e3a7d07f88cc
--- /dev/null
+++ b/drivers/net/ehea/ehea_hw.h
@@ -0,0 +1,287 @@
+/*
+ *  linux/drivers/net/ehea/ehea_hw.h
+ *
+ *  eHEA ethernet device driver for IBM eServer System p
+ *
+ *  (C) Copyright IBM Corp. 2006
+ *
+ *  Authors:
+ *       Christoph Raisch <raisch@de.ibm.com>
+ *       Jan-Bernd Themann <themann@de.ibm.com>
+ *       Thomas Klein <tklein@de.ibm.com>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __EHEA_HW_H__
+#define __EHEA_HW_H__
+
+#define QPX_SQA_VALUE   EHEA_BMASK_IBM(48,63)
+#define QPX_RQ1A_VALUE  EHEA_BMASK_IBM(48,63)
+#define QPX_RQ2A_VALUE  EHEA_BMASK_IBM(48,63)
+#define QPX_RQ3A_VALUE  EHEA_BMASK_IBM(48,63)
+
+#define QPTEMM_OFFSET(x) offsetof(struct ehea_qptemm, x)
+
+struct ehea_qptemm {
+	u64 qpx_hcr;
+	u64 qpx_c;
+	u64 qpx_herr;
+	u64 qpx_aer;
+	u64 qpx_sqa;
+	u64 qpx_sqc;
+	u64 qpx_rq1a;
+	u64 qpx_rq1c;
+	u64 qpx_st;
+	u64 qpx_aerr;
+	u64 qpx_tenure;
+	u64 qpx_reserved1[(0x098 - 0x058) / 8];
+	u64 qpx_portp;
+	u64 qpx_reserved2[(0x100 - 0x0A0) / 8];
+	u64 qpx_t;
+	u64 qpx_sqhp;
+	u64 qpx_sqptp;
+	u64 qpx_reserved3[(0x140 - 0x118) / 8];
+	u64 qpx_sqwsize;
+	u64 qpx_reserved4[(0x170 - 0x148) / 8];
+	u64 qpx_sqsize;
+	u64 qpx_reserved5[(0x1B0 - 0x178) / 8];
+	u64 qpx_sigt;
+	u64 qpx_wqecnt;
+	u64 qpx_rq1hp;
+	u64 qpx_rq1ptp;
+	u64 qpx_rq1size;
+	u64 qpx_reserved6[(0x220 - 0x1D8) / 8];
+	u64 qpx_rq1wsize;
+	u64 qpx_reserved7[(0x240 - 0x228) / 8];
+	u64 qpx_pd;
+	u64 qpx_scqn;
+	u64 qpx_rcqn;
+	u64 qpx_aeqn;
+	u64 reserved49;
+	u64 qpx_ram;
+	u64 qpx_reserved8[(0x300 - 0x270) / 8];
+	u64 qpx_rq2a;
+	u64 qpx_rq2c;
+	u64 qpx_rq2hp;
+	u64 qpx_rq2ptp;
+	u64 qpx_rq2size;
+	u64 qpx_rq2wsize;
+	u64 qpx_rq2th;
+	u64 qpx_rq3a;
+	u64 qpx_rq3c;
+	u64 qpx_rq3hp;
+	u64 qpx_rq3ptp;
+	u64 qpx_rq3size;
+	u64 qpx_rq3wsize;
+	u64 qpx_rq3th;
+	u64 qpx_lpn;
+	u64 qpx_reserved9[(0x400 - 0x378) / 8];
+	u64 reserved_ext[(0x500 - 0x400) / 8];
+	u64 reserved2[(0x1000 - 0x500) / 8];
+};
+
+#define MRx_HCR_LPARID_VALID EHEA_BMASK_IBM(0, 0)
+
+#define MRMWMM_OFFSET(x) offsetof(struct ehea_mrmwmm, x)
+
+struct ehea_mrmwmm {
+	u64 mrx_hcr;
+	u64 mrx_c;
+	u64 mrx_herr;
+	u64 mrx_aer;
+	u64 mrx_pp;
+	u64 reserved1;
+	u64 reserved2;
+	u64 reserved3;
+	u64 reserved4[(0x200 - 0x40) / 8];
+	u64 mrx_ctl[64];
+};
+
+#define QPEDMM_OFFSET(x) offsetof(struct ehea_qpedmm, x)
+
+struct ehea_qpedmm {
+
+	u64 reserved0[(0x400) / 8];
+	u64 qpedx_phh;
+	u64 qpedx_ppsgp;
+	u64 qpedx_ppsgu;
+	u64 qpedx_ppdgp;
+	u64 qpedx_ppdgu;
+	u64 qpedx_aph;
+	u64 qpedx_apsgp;
+	u64 qpedx_apsgu;
+	u64 qpedx_apdgp;
+	u64 qpedx_apdgu;
+	u64 qpedx_apav;
+	u64 qpedx_apsav;
+	u64 qpedx_hcr;
+	u64 reserved1[4];
+	u64 qpedx_rrl0;
+	u64 qpedx_rrrkey0;
+	u64 qpedx_rrva0;
+	u64 reserved2;
+	u64 qpedx_rrl1;
+	u64 qpedx_rrrkey1;
+	u64 qpedx_rrva1;
+	u64 reserved3;
+	u64 qpedx_rrl2;
+	u64 qpedx_rrrkey2;
+	u64 qpedx_rrva2;
+	u64 reserved4;
+	u64 qpedx_rrl3;
+	u64 qpedx_rrrkey3;
+	u64 qpedx_rrva3;
+};
+
+#define CQX_FECADDER EHEA_BMASK_IBM(32, 63)
+#define CQX_FEC_CQE_CNT EHEA_BMASK_IBM(32, 63)
+#define CQX_N1_GENERATE_COMP_EVENT EHEA_BMASK_IBM(0, 0)
+#define CQX_EP_EVENT_PENDING EHEA_BMASK_IBM(0, 0)
+
+#define CQTEMM_OFFSET(x) offsetof(struct ehea_cqtemm, x)
+
+struct ehea_cqtemm {
+	u64 cqx_hcr;
+	u64 cqx_c;
+	u64 cqx_herr;
+	u64 cqx_aer;
+	u64 cqx_ptp;
+	u64 cqx_tp;
+	u64 cqx_fec;
+	u64 cqx_feca;
+	u64 cqx_ep;
+	u64 cqx_eq;
+	u64 reserved1;
+	u64 cqx_n0;
+	u64 cqx_n1;
+	u64 reserved2[(0x1000 - 0x60) / 8];
+};
+
+#define EQTEMM_OFFSET(x) offsetof(struct ehea_eqtemm, x)
+
+struct ehea_eqtemm {
+	u64 eqx_hcr;
+	u64 eqx_c;
+	u64 eqx_herr;
+	u64 eqx_aer;
+	u64 eqx_ptp;
+	u64 eqx_tp;
+	u64 eqx_ssba;
+	u64 eqx_psba;
+	u64 eqx_cec;
+	u64 eqx_meql;
+	u64 eqx_xisbi;
+	u64 eqx_xisc;
+	u64 eqx_it;
+};
+
+static inline u64 epa_load(struct h_epa epa, u32 offset)
+{
+	return readq((void __iomem *)(epa.addr + offset));
+}
+
+static inline void epa_store(struct h_epa epa, u32 offset, u64 value)
+{
+	writeq(value, (void __iomem *)(epa.addr + offset));
+	epa_load(epa, offset);	/* synchronize explicitly to eHEA */
+}
+
+static inline void epa_store_acc(struct h_epa epa, u32 offset, u64 value)
+{
+	writeq(value, (void __iomem *)(epa.addr + offset));
+}
+
+#define epa_store_eq(epa, offset, value)\
+        epa_store(epa, EQTEMM_OFFSET(offset), value)
+#define epa_load_eq(epa, offset)\
+        epa_load(epa, EQTEMM_OFFSET(offset))
+
+#define epa_store_cq(epa, offset, value)\
+        epa_store(epa, CQTEMM_OFFSET(offset), value)
+#define epa_load_cq(epa, offset)\
+        epa_load(epa, CQTEMM_OFFSET(offset))
+
+#define epa_store_qp(epa, offset, value)\
+        epa_store(epa, QPTEMM_OFFSET(offset), value)
+#define epa_load_qp(epa, offset)\
+        epa_load(epa, QPTEMM_OFFSET(offset))
+
+#define epa_store_qped(epa, offset, value)\
+        epa_store(epa, QPEDMM_OFFSET(offset), value)
+#define epa_load_qped(epa, offset)\
+        epa_load(epa, QPEDMM_OFFSET(offset))
+
+#define epa_store_mrmw(epa, offset, value)\
+        epa_store(epa, MRMWMM_OFFSET(offset), value)
+#define epa_load_mrmw(epa, offset)\
+        epa_load(epa, MRMWMM_OFFSET(offset))
+
+#define epa_store_base(epa, offset, value)\
+        epa_store(epa, HCAGR_OFFSET(offset), value)
+#define epa_load_base(epa, offset)\
+        epa_load(epa, HCAGR_OFFSET(offset))
+
+static inline void ehea_update_sqa(struct ehea_qp *qp, u16 nr_wqes)
+{
+	struct h_epa epa = qp->epas.kernel;
+	epa_store_acc(epa, QPTEMM_OFFSET(qpx_sqa),
+		      EHEA_BMASK_SET(QPX_SQA_VALUE, nr_wqes));
+}
+
+static inline void ehea_update_rq3a(struct ehea_qp *qp, u16 nr_wqes)
+{
+	struct h_epa epa = qp->epas.kernel;
+	epa_store_acc(epa, QPTEMM_OFFSET(qpx_rq3a),
+		      EHEA_BMASK_SET(QPX_RQ1A_VALUE, nr_wqes));
+}
+
+static inline void ehea_update_rq2a(struct ehea_qp *qp, u16 nr_wqes)
+{
+	struct h_epa epa = qp->epas.kernel;
+	epa_store_acc(epa, QPTEMM_OFFSET(qpx_rq2a),
+		      EHEA_BMASK_SET(QPX_RQ2A_VALUE, nr_wqes));
+}
+
+static inline void ehea_update_rq1a(struct ehea_qp *qp, u16 nr_wqes)
+{
+	struct h_epa epa = qp->epas.kernel;
+	epa_store_acc(epa, QPTEMM_OFFSET(qpx_rq1a),
+		      EHEA_BMASK_SET(QPX_RQ3A_VALUE, nr_wqes));
+}
+
+static inline void ehea_update_feca(struct ehea_cq *cq, u32 nr_cqes)
+{
+	struct h_epa epa = cq->epas.kernel;
+	epa_store_acc(epa, CQTEMM_OFFSET(cqx_feca),
+		      EHEA_BMASK_SET(CQX_FECADDER, nr_cqes));
+}
+
+static inline void ehea_reset_cq_n1(struct ehea_cq *cq)
+{
+	struct h_epa epa = cq->epas.kernel;
+	epa_store_cq(epa, cqx_n1,
+		     EHEA_BMASK_SET(CQX_N1_GENERATE_COMP_EVENT, 1));
+}
+
+static inline void ehea_reset_cq_ep(struct ehea_cq *my_cq)
+{
+	struct h_epa epa = my_cq->epas.kernel;
+	epa_store_acc(epa, CQTEMM_OFFSET(cqx_ep),
+		      EHEA_BMASK_SET(CQX_EP_EVENT_PENDING, 0));
+}
+
+#endif	/* __EHEA_HW_H__ */